Water Waste Water Treatment

65
WATER AND WASTEWATER TREATMENT www.balmoraltanks.com Rainwater harvesting systems Water storage Wastewater treatment plant Technical data Information

Transcript of Water Waste Water Treatment

Page 1: Water Waste Water Treatment

WATER ANDWASTEWATERTREATMENTwww.balmoraltanks.com

Rainwaterharvesting systems

Water storage

Wastewatertreatment plant

Technical data

Information

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Balmoral Tanks

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Wastewater treatment plant 3

Septic tanks 9Balmoral Continuous Aeration Plant (CAP) 15Balmoral HydroClearTM 21Balmoral Sequential Batch Reactor (SBR) 29

Balmoral rainwater harvesting systems 37

Home-HarvestTM rainwater system 44Garden-HarvestTM rainwater system 46

Water storage 49

Above ground water storage 55Underground water storage 56Balmoral Hydrostack emergency water storage 57

Balmoral Tanks Ltd 59

Balmoral Group 61

©2009 Balmoral Tanks. All rights reserved. This publication is protected by copyright. No part of it may be reproduced, stored in a retrieval system, or transmitted, in any form, by any means, electronic, mechanical,photocopying, recording or otherwise, without the prior written permission of the copyright owners. Balmoral Tanks believe that the information printed in this brochure is accurate, and published for information only.No warrants, express or implied, are contained therein, nor does any legal liability attach to Balmoral Tanks for any reason whatsoever. The company’s policy is one of continuous product improvement and we reservethe right to make alterations to our range and specification without prior notice.

HEAD OFFICE AND FACTORIES

Balmoral Park, Loirston, Aberdeen AB12 3GY, Scotland

Tel +44 (0)1224 859000 Fax +44 (0)1224 859123

Email [email protected] www.balmoraltanks.com

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Wastew

atertreatm

entplant

Reference should be made to the following guidance notes• Environment Agency Pollution Prevention Guidelines PPG4• British Standards 6297• European Standards BSEN12566• Building Control Regulations 2000 Part H Drainage and Waste Disposal, 2002 edition• British Water Flows and Loads - 2

WASTEWATERTREATMENT PLANT

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Mains and off-mains drainageThe majority of houses in the UK are linked to the publicsewerage system; you pull the plug, flush the toilet, paythe monthly bill and have little more to worry about. Thisis mains drainage.

In rural areas many homes and villages are self-contained,ie, the wastewater flows to a cesspool, septic tank ortreatment plant. This has no connection to the publicsewerage system and is known as off-mains.

If you’re off-mains what are your options?If you seek a solution to your off-mains wastewater disposal,one of the three following options will be required:� Septic tank� Package wastewater treatment plant� Cesspool

Septic tankSolids and liquids separate in a septic tank with the liquidsreceiving minimum biological treatment. The liquid in thecentre of the tank is discharged via an outlet before passingthrough a soakaway system which must be installed to nationalstandards.

The solids that gather at the bottom of the tank must beemptied regularly to prevent overflow and potential soakawaydamage.

Package wastewater treatment plantSo-called because these products bring together all therequirements to treat wastewater to a high standard within asingle pre-fabricated system. Generally consisting of a two orthree chamber treatment process, effluent is treatedaerobically, ie, using oxygen, to such a standard that it isusually acceptable to discharge directly into watercourse.

Package treatment plants require an electrical connection andshould be emptied regularly dependent on usage and capacity.

CesspoolThis is a single watertight underground chamber which simplystores raw sewage for collection. Usually constructed in GRP,concrete or brick these can be very large and must be emptiedregularly to avoid overflowing.

Unless there is absolutely no other solution - where the groundconditions prevent the installation of a soakaway system orthere is no natural watercourse to discharge to for example -cesspools are not a favoured choice, either of the propertyowner or the environmental agencies.

Choosing the right sewagetreatment and disposal method foryour site is essential to ensurevalue for money, effective long-term performance, protection ofpublic health and the environment,and compliance with relevantlegislation*

* Source: EA PPG4

Septic tank

Package wastewater treatment plant

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Cesspool

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Which one is for you?Now that you have identified the requirement for awastewater treatment system, how do you know which one iscorrect for your property?

As the final effluent will be discharged into the ground via asoakaway, raised mound, reed bed or watercourse, a fullassessment should be undertaken by a qualified engineer.

This will normally include geographic research in terms ofwater table height, a site visit and a percolation test.Combined, these factors will determine the type of systemthat best meets your criteria.

Contact local Building Control (BC) officeand environmental regulator for selectionof discharge type1

Public Sewerdischarge Soakaway discharge

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Consent to dischargeWhere effluent will be discharged to a watercourse anddepending on the volume, consent must be granted by yourlocal environment agency before you begin your installation. Ifyou do not obtain such a “licence” you may be liable toprosecution.

Your agency will be happy to advise you on the level ofeffluent treatment required in the area and this informationwill help you determine which type of wastewater treatmentplant should be installed. You will then be required tocomplete and submit a Consent to Discharge application formincluding a fee to the appropriate agency.

Consent to discharge criteria is normally expressed inpermitted milligrams per litre for the following factors:� Biochemical Oxygen Demand (BOD)� Suspended Solids (SS)� Ammonia (NH3)

Confirm acceptanceto adopt dischargewith local watercompany provider

Discuss BC approvalfor septic tank2discharge throughsoakaway system(subject to siteassessment)

Perform siteassessment forgravity or pumpeddischarge to publicsewer point

Perform siteassessment forsoakaway suitability,including percolationtest

Submit plans withdetails of proposedsystem to BC forfinal approval

Size system forpopulationrequirement andsubmit plans to BCfor final approval

Site

unsuitab

leforsoakaw

ay

1 Balmoral Tanks Sales will be able to offer further independent advice wheremultiple options exist

2 In some circumstances a Package Treatment Plant may be required - selectBalmoral Hydroclear, CAP or SBR

Pollution of the environment is acriminal offence and compliancewith one or more Guidance Note isnot a defence to such offences. Itis recommended that you checkthe references to other sources ofguidance to ensure they are stillcurrent*

* Source: EA PPG4

Surface/openwater discharge

Obtain approvalfrom environmentalregulator fordischargeauthorisation -Consent LicenceRegistration (CLR)

Perform siteassessment andusing CLR, selectBalmoral Hydroclear,CAP or SBR to suiteffluent qualityand populationrequirement

Submit plans withdetails of proposedsystem to BC forfinal approval

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Will you need planning permission?You should contact your local authority to determine whether ornot planning permission is required before you begin the project.

Quite often, in new build situations particularly, this approvalwill form part of the overall permission but be sure to have thisclarified in every case.

InstallationIt is recommended that wastewater treatment plants shouldn’tbe sited any nearer than 25m from an inhabitated buildingalthough some local authorities may allow installationconsiderably closer. For single house installations 15m isgenerally considered as a reasonable distance thoughagreement should always be sought from your local authoritybefore installation.

The plant should not be installed close to a driveway or road orindeed anywhere else where there is a risk of it beingsubjected to additional superimposed loadings.

Access should be maintained for the desludging tanker, thesecan normally achieve a reach of approximately 20m.

The installation must be carried out by suitably qualifiedpersonnel and special care is required when installing inadverse conditions such rocky substrata or where the watertable runs high, for example.

Any proposals for non-mainssewerage systems must takeaccount of the requirements ofBuilding Regulations and shouldbe discussed with the localplanning authority at an earlystage and well before anyplanning application is made*

Sewage treatment is an ongoingprocess and the micro-organismsmust stay healthy for the systemto work. You should desludge thesystem regularly to prevent thebuild up of sludge and solids sothat sewage flows freely throughthe unit*

Commissioning, maintenance andafter sales supportWe would always recommend that your wastewatertreatment plant is commissioned, ie, installation check andinitial activation, by a Balmoral approved engineer. We wouldalso recommend that you undertake an annual maintenanceprogramme to ensure your plant continues to operate at itsfull potential. We will be very happy to help you initiate this,if requested, when your plant is commissioned.

In any case, you should inspect your wastewater plantmonthly to ensure the effluent is flowing freely. Desludgingintervals are dependent upon the tank’s capacity andfurther information on this is provided in the product-specific sections.

Our after sales support team is always available either bycalling 01283 562382 or by sending an email [email protected]. We will be happy to answeryour questions if you don’t find the information you requireat the FAQ section of our website.

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SeptictanksSEPTIC TANKS

� Impact resistant body moulded in one-piece polyethylene

� Wide base and lifting eyes

� Adjustable invert depth

� Fully sized, two stage separation treatment chambers

� Integral venting pipework

� Wide range to suit population requirements

� BBA Accredited (Cert. no. 94/3021)

Key benefits

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A septic tank is designed to provide what is known asprimary treatment to crude wastewater produced in anormal domestic environment. It retains solids andallows them to settle out, where they can be partiallybroken down by biological action so that only theremaining liquor is left to flow down the outlet drain.This liquor (normally called effluent) is thensufficiently treated to soak into the ground in anunderground soakaway system.

How does it work?Balmoral septic tanks are designed in accordance withBritish Standard Code of Practice BS6297 and arebased on a two chamber design (4 and 5) with a longflow path which ensures a high degree of settlement(6), thus providing a low level of suspended solidssuitable for discharge (7) into an undergroundsoakaway system.

Design features� The tanks have a flat base for stability duringtransportation and storage prior to installation

� The tanks have Ø50mm moulded-in lifting eyes foruse during handling and installation (To be usedonly when the tank is empty)

� The inlet and outlet pipework is specially designedto disperse any noxious or inflammable gases intothe atmosphere through the drainage ventilation

� The standard septic tank is designed to cater fordrain invert depths of 770mm. The neck can bereduced to suit shallower invert depth

� The inlet pipe can be rotated by 180° to line upwith the drainage lines from almost any direction

� The system of baffles ensure that no crude solidsescape into the outlet drain, avoiding prematureblocking of the soakaway system

� A fully lockable pedestrian duty manhole cover issupplied as standard to comply with statutoryregulations

� A safety grille can also be supplied as an optionalitem to fit across the access shaft as an additionalsafety feature

� Balmoral septic tanks are tested and approved bythe British Board of Agrément (Cert. no. 94/3021)

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3

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1 110mm Inlet2 Rodding access3 Pedestrian duty manhole cover4 Settlement chamber5 Cylindrical baffle6 Settlement7 110mm Outlet

SEPTIC TANKS

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InletOutlet

Reducedinvertcut line

Ø760mmNominal access

Ground level

Ø1275

Ø1840

2400

770

890

BST27Specifications

Population served 1-4

Max hydraulic load (l/day) 800

Organic load (g BOD5/day) n/a

NH3 (g/per day) n/a

Total capacity (litres) 2700

Diameter (mm) 1840

Height (mm) 2400

Empty plant weight (kg) 197

Energy usage (kWh/day) 0

Inlet invert (mm) 770

Outlet invert (mm) 890

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BST27-WLID-NN

Accreditation BBA(Cert No. 94/3021)

InletOutlet

Reducedinvertcut line

Ø760mmNominal access

Ground level

Ø1275

Ø2045

2640

770

890

BST38Specifications

Population served 5-10

Max hydraulic load (I/day) 2000

Organic load (g BOD5/day) n/a

NH3 (g/day) n/a

Total capacity (litres) 3800

Diameter (mm) 2045

Height (mm) 2640

Empty plant weight (kg) 240

Energy usage (kWh/day) 0

Inlet invert (mm) 770

Outlet invert (mm) 890

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BST38-WLID-NN

Accreditation BBA(Cert No. 94/3021)

Balmoral septic tanks

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InletOutlet

Reducedinvertcut line

Ø760mmNominal access

Ground level

Ø1275

Ø2165

2770

770

890

BST45Specifications

Population served 11-14

Max hydraulic load (l/day) 2800

Organic load (g BOD5/day) n/a

NH3 (g/day) n/a

Total capacity (litres) 4500

Diameter (mm) 2165

Height (mm) 2770

Empty plant weight (kg) 275

Energy usage (kWh/day) 0

Inlet invert (mm) 770

Outlet invert (mm) 890

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BST45-WLID-NN

Accreditation BBA(Cert No. 94/3021)

InletOutlet

Reducedinvertcut line

Ø760mmNominal access

Ground level

Ø1275

Ø2365

3005

770

890

BST60Specifications

Population served 15-22

Max hydraulic load (I/day) 4400

Organic load (g BOD5/day) n/a

NH3 (g/day) n/a

Total capacity (litres) 6000

Diameter (mm) 2365

Height (mm) 3005

Empty plant weight (kg) 335

Energy usage (kWh/day) 0

Inlet invert (mm) 770

Outlet invert (mm) 890

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BST60-WLID-NN

Accreditation BBA(Cert No. 94/3021)

Balmoral septic tanks

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BalmoralCA

P

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BALMORAL CAPContinuous Aeration Plant

� Impact resistant body moulded in one-piece polyethylene

� Wide base for stability and ease of handling and storage

� Sturdy lifting eyes for easy handling and installation

� Achieves Royal Commission standards for effluent qualityunder normal domestic conditions

� Powered by a small, near silent air compressor

� Corrosion resistant

� The Balmoral CAP is tested and approved by the IrishAgrément Board (Cert. no. 02/0148)

Key benefits

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The Balmoral CAP is a biological aeration typetreatment plant designed to produce a moderatequality of final effluent in addition to overcomingseveral of the common problems associated withsmall packaged domestic wastewater treatment units.

Common problems which can occur are:� “Fixed film” types, which have a “media” matrix,

can suffer from media blockage because ofexcessive bacteria growth. Replacement/maintenance of the media material may berequired at regular intervals

� Mechanical/electrical components within the tanksare difficult to maintain and can be a safety risk

� The liquor is not spread evenly over the availablebacteria preventing an adequate oxygen supply

The Balmoral CAP overcomes these problemsbecause:� There is no “fixed” media within the CAP to

become blocked - it operates on the “activatedsludge” principal whereby the bacteria floats insuspension in the reactor vessel and forms an“active soup” of “mixed liquor”

� All functions within the tank are operated by airpower generated by a small compressor contained inthe neck of the tank, allowing maintenance to becarried out safely and easily

� The bacteria receives a high quality air supply andis completely mixed and aerated by the highvolume fine bubble diffuser

How does it work?Crude wastewater enters the main outer chamber (1)where the initial settlement takes place, with theheaviest solids sinking and the floating matter rising.The liquor from the main section is transferred to thecentral chamber (2) where it is continuously aeratedby the fine bubble diffuser (4) which encouragesbacteria to provide the second stage of treatment.

The mid section of this treated effluent is thenremoved from the chamber through a calming pipe (5)which allows a further brief settlement beforedischarge (6).

The air compressor (7) runs continuously. It iscontained within the neck of the tank and isaccessible for maintenance if required.

Easy access is available to both chambers fordesludging which is an annual operation.

BALMORAL CAPContinuous Aeration Plant

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5

6

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1

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1 Primary settlement tank2 Reactor vessel3 Transfer pipe4 Fine bubble diffuser5 Calming pipe6 Outlet pipe7 Air compressor

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InletOutlet

Reducedinvertcut line

Ø760mmNominal access

Ground level

Ø1275

Ø2045

2640

770

890

CAP6Specifications

Population served 1-6

Max hydraulic load (l/day) 1200

Organic load (g BOD5/day) 360

NH3 (g/per day) 48

Total capacity (litres) 3800

Diameter (mm) 2045

Height (mm) 2640

Empty plant weight (kg) 250

Energy usage (kWh/day) 1.4

Inlet invert (mm) 770

Outlet invert (mm) 890

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BCAP-6-NN

Pump version BCAP-6-NN-WPUMP

Accreditation IAB (Cert No. 02/0148)

InletOutlet

Ø760mmNominal access

Ground level

Ø1275

Ø2045

2370

500

620

CAP6Specifications

Population served 1-6

Max hydraulic load (l/day) 1200

Organic load (g BOD5/day) 360

NH3 (g/per day) 48

Total capacity (litres) 3800

Diameter (mm) 2045

Height (mm) 2370

Empty plant weight (kg) 250

Energy usage (kWh/day) 1.4

Inlet invert (mm) 500

Outlet invert (mm) 620

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BCAP-6-NN-LINV

Pump version BCAP-6-NN-WPUMP-LINV

Accreditation IAB (Cert No. 02/0148)

Lowinvert

Balmoral Continuous Aeration Plant

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InletOutlet

Reducedinvertcut line

Ø760mmNominal access

Ground level

Ø1275

Ø2365

3005

770

890

CAP12Specifications

Population served 7-12

Max hydraulic load (l/day) 2400

Organic load (g BOD5/day) 720

NH3 (g/per day) 96

Total capacity (litres) 6000

Diameter (mm) 2365

Height (mm) 3005

Empty plant weight (kg) 345

Energy usage (kWh/day) 1.8

Inlet invert (mm) 770

Outlet invert (mm) 890

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BCAP-12-NN

Pump version BCAP-12-NN-WPUMP

Accreditation IAB (Cert No. 02/0148)

InletOutlet

Ø760mmNominal access

Ground level

Ø1275

Ø2365

2735

500

620

CAP12Specifications

Population served 7-12

Max hydraulic load (l/day) 2400

Organic load (g BOD5/day) 720

NH3 (g/per day) 96

Total capacity (litres) 6000

Diameter (mm) 2365

Height (mm) 2735

Empty plant weight (kg) 345

Energy usage (kWh/day) 1.8

Inlet invert (mm) 500

Outlet invert (mm) 620

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BCAP-12-NN-LINV

Pump version BCAP-12-NN-WPUMP-LINV

Accreditation IAB (Cert No. 02/0148)

Lowinvert

Balmoral Continuous Aeration Plant

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Balmoral

HydroClear

TM

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BALMORALHYDROCLEAR

� Market leading pollutant removal level of 97%

� 24 month service period reduces operating costs

� 6-50 pop options

� Cost effective installation

� Virtually silent operation

� Carries full CE accreditation to BS EN12566-3

Key benefits

TM

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An aerated biological system, the HydroClear benefitsfrom a moving bed biological reactor, or MBBR, at itscore. A new process in the package wastewater market,MBBR technology embraces the benefits of common fixedfilm media processes without suffering their commondownfalls.

Overgrowth of bacteria leading to ‘channelling’ is an issuewith common process designs such as submerged aeratedfilters (SAF), rotating biological contactors (RBC) ortrickling filter (TF) designs.

How does it work?The Balmoral HydroClear system incorporates a full sizethree chamber design, ie, primary settlement, aerationchamber and final settlement.

Within the primary settlement chamber, large solids areremoved by settlement and flotation. An accumulationforms at the base of the tank and is removed annually orbiennially by desludging.

The clarified water then passes to the biological reactorwhere it is treated to remove the dissolved constituents.Mobile media elements support large bacterialpopulations within the reaction chamber while induced airpromotes complete mixing ensuring that full treatment isachieved.

Unlike conventional media beds, MBBR systems are selfcleaning and unable to become blocked throughchannelling. Media interactions produce a sloughing effectthat removes excess bacteria thus ensuring continuous re-growth, optimising overall reactor efficiency.

The treated effluent and sloughed off bacteria flows intothe final settlement chamber where any remaining smallsolids are removed prior to the clarified effluent beingdischarged from the plant.

Design features� Class-leading performance The HydroClear produces an

astonishing market leading pollutant removal level of97%. Carrying full CE accreditation to BS EN12566-3,final values are achieved for BOD, SS and NH4-N of10:13:6mg/l respectively.

� Lower operating costs With its unprecedented 24-month service period and enhanced capacities theHydroClear can dramatically reduce long term operatingcosts. This is achieved through the inherent reliabilityof the simple but effective design rather than usingcomplex systems that require frequent maintenanceand desludging to achieve optimum performance.

� Easy installation Further benefits are realised from theoutset with optimised design characteristics meaningthe 6-pop model can be installed using a 2.5-tonnemini-digger rather than the 7 or 12-tonne machinesrequired for traditional plants. These design values arereflected across the entire HydroClear range resultingin simple, cost effective installation with minimaldamage to the surrounding area.

� Power failure default Even if the power fails theHydroClear will continue performing as a septic tank toensure continued environmental protection.

� Silence is golden High performance diaphragm blowersare used across the full range of HydroClears providingvirtually silent operation.

� Odour minimisation Hermetically sealed and marketleading performance means the HydroClear effectivelycombats odour production.

� 6-50-pop options The HydroClear is available in 6, 12,30, 40 and 50-population models, in single or multitankdesigns, depending on size, offering a highly flexiblesolution to space-limited sites.

BALMORAL HYDROCLEAR

1 110-160mm inlet dependingon model

2 Primary settlement chamber3 Aeration chamber4 Final settlement chamber5 110-160mm outlet depending

on model6 160mm capped lid:

desludge point7 Electrical isolator switch8 Air compressor with warning

system (240V)9 760mm manway lid: bolted

down and sealed10 160mm capped lid:

desludge point11 Bio media12 Bubble diffuser

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TM

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Ø760mm Ø760mmAccess to aircompressor

3400

Maxwidth1250

2450 Outlet

1050

Inlet

1000

Ground level

SpecificationsPopulation served 1-6

Max hydraulic load (l/day) 1200

Organic load (g BOD5/day) 360

NH3 (g/per day) 48

Total capacity (litres) 4440

Length (mm) 3400

Width (mm) 1250

Height (mm) 2450

Empty plant weight (kg) 450

Energy usage (kWh/day) 1.8

Inlet invert (mm) 1000

Outlet invert (mm) 1050

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BHYD-6

Accreditation CE (BS EN 12566-3)

HC6

4500

Maxwidth1400

Ø760mm Ø760mm

2450

Desludging point(160mm)

Desludging point(160mm)

Inlet

1000

Ground level

Outlet

1050

Access to aircompressor

SpecificationsPopulation served 7-12

Max hydraulic load (l/day) 2400

Organic load (g BOD5/day) 720

NH3 (g/per day) 96

Total capacity (litres) 5950

Length (mm) 4500

Width (mm) 1400

Height (mm) 2450

Empty plant weight (kg) 550

Energy usage (kWh/day) 2.5

Inlet invert (mm) 1000

Outlet invert (mm) 1050

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 9 months

Product code BHYD-12

Accreditation CE (BS EN 12566-3)HC12

Balmoral HydroClearTM

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5680

Maxwidth1400

Ø760mm Ø760mm

2450

Desludging point(160mm)

Desludging point(160mm)

Inlet

1000

Ground level

Outlet

1050

Access to aircompressor

SpecificationsPopulation served 13-20

Max hydraulic load (l/day) 4000

Organic load (g BOD5/day) 1200

NH3 (g/per day) 160

Total capacity (litres) 7960

Length (mm) 5680

Width (mm) 1400

Height (mm) 2450

Empty plant weight (kg) 700

Energy usage (kWh/day) 2.7

Inlet invert (mm) 1000

Outlet invert (mm) 1050

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 6 months

Product code BHYD-20

Accreditation CE (BS EN 12566-3)HC20

4500

600 mindistancebetween

tanks

9600 min overall length

2450

Desludging point(160mm)

Desludging point(160mm)

Inlet

1000

Ground level

1050

4500

Maxwidth1400

Ø760mmØ760mm

Primary tank Aeration/final settlement tank

Desludging point(160mm)

Rodding point

Outlet

1050

Access to aircompressor

SpecificationsPopulation served 21-30

Max hydraulic load (l/day) 6000

Organic load (g BOD5/day) 1800

NH3 (g/per day) 240

Total capacity (litres) 11410

Overall length (mm) 9600 (minimum)

Width (mm) 1400

Height (mm) 2450

Empty plant weight (kg) 1030

Energy usage (kWh/day) 3.6

Inlet invert (mm) 1000

Outlet invert (mm) 1050

Pipework fitting (mm) Ø160

Lid size (mm) Ø760

Desludging interval 6 months

Product code BHYD-30

Accreditation CE (BS EN 12566-3)HC30

Balmoral HydroClearTM

Note: The HC30 can be installed in line or side by side as conditions dictate

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4500

600 mindistancebetween

tanksMax

width1400

2450

Desludging point(160mm)

Desludging point(160mm)

Desludging point(160mm)

Inlet

1000

Ground level

1050

1050

Ø760mm Ø760mm

Primary tank5680

10780 min overall length

Aeration/final settlement tank

Rodding point

Access to aircompressor

Outlet

SpecificationsPopulation served 31-40

Max hydraulic load (l/day) 8000

Organic load (g BOD5/day) 2400

NH3 (g/per day) 320

Total capacity (litres) 14920

Overall length (mm) 10780 (minimum)

Width (mm) 1400

Height (mm) 2450

Empty plant weight (kg) 1190

Energy usage (kWh/day) 5.2

Inlet invert (mm) 1000

Outlet invert (mm) 1050

Pipework fitting (mm) Ø160

Lid size (mm) Ø760

Desludging interval 6 months

Product code BHYD-40

Accreditation CE (BS EN 12566-3)HC40

5680

600 mindistancebetween

tanks

Maxwidth1400

2450

Desludging point(160mm)

Desludging point(160mm)

Desludging point(160mm)

Inlet Outlet

1000

Ground level

1050

1050

Ø760mm Ø760mmØ760mm

Primary tank4500

14780 min overall length

Aeration tank Final settlement tank

600 mindistancebetween

tanks 3400

Rodding point Rodding point

Access to aircompressor

1050

SpecificationsPopulation served 41-50

Max hydraulic load (l/day) 10000

Organic load (g BOD5/day) 3000

NH3 (g/per day) 400

Total capacity (litres) 18400

Overall length (mm) 14780 (minimum)

Width (mm) 1400

Height (mm) 2450

Empty plant weight (kg) 1590

Energy usage (kWh/day) 5.7

Inlet invert (mm) 1000

Outlet invert (mm) 1050

Pipework fitting (mm) Ø160

Lid size (mm) Ø760

Desludging interval 6 months

Product code BHYD-50

Accreditation CE (BS EN 12566-3)HC50

Balmoral HydroClearTM

Note: The HC40 can be installed in line or side by side as conditions dictate

Note: The HC50 can be installed in line or side by side as conditions dictate

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Desludging intervalsA number of products on the market state 12-monthdesludging intervals, similar to the HydroClear 6-pop.However, the primary settlement capacities of some of theseproducts could be smaller than the HC6 by as much as 66%.Unless accounted for by special process design this can resultin desludging being required three times more frequently thanthe HydroClear. Similar circumstances may also be found inranges above 6 pop.

Using the Balmoral sludge gauge, end-users can accuratelymeasure sludge build up. Where reduced loadings exist, theHydroClear can operate safely with longer desludging intervalsin comparison to similar sized products.

ServicingThe Balmoral HydroClear has been specifically designed tooperate round a 24-month service interval; one of the longestavailable in the market.

The simplicity of the system also gives the end-user an optionto service their plant using accredited engineers or perform aself service using Balmoral supplied kits. Either choice meanspaying less in service costs over the product’s lifetime.

Operating cost calculatorVisit balmoralhydroclear.com to compare the life cycle costsof alternative products with the Balmoral HydroClear.

Balmoral HydroClear 6-pop Comparable treatment plant10 year maintenance costs 10 year maintenance costsEnd of year one £ £Two-yearly service by owner NR 200 Annual engineer serviceTwo-yearly desludge NR 200 Annual desludgeTotal first year cost 0 400 Total first year cost

End of year twoTwo-yearly service by owner (service kit) 50 200 Annual engineer serviceTwo-yearly desludge 200 200 Annual desludgeCumulative two year costs 250 800 Cumulative two year costs

End of year threeTwo-yearly service by owner 0 200 Annual engineer serviceTwo-yearly desludge 0 200 Annual desludgeCumulative three year costs 250 1200 Cumulative three year costsEnd of year fourTwo-yearly service by owner 50 200 Annual engineer serviceTwo-yearly desludge 200 200 Annual desludgeCumulative four year costs 500 1600 Cumulative four year costs

Cumulative six year costs 750 2400 Cumulative six year costsCumulative eight year costs 1000 3200 Cumulative eight year costsCumulative ten year costs 1250 4000 Cumulative ten year costs

0 1 2 3 4 5 6 7 8 109

4,000

0

3,500

3,000

2,500

2,000

1,500

1,000

500

Plant lifetime (years)

Cumulativeservicingcosts(£)

Life cycle costs: HydroClear v Comparable treatment plant

Balmoral HydroClear

Compar

able tr

eatment p

lant

It has been assumed that thedesludge interval for theHydroClear will be twice as longas the comparable product andself servicing will be carried outon the HydroClear every twoyears. The HydroClear’s actualdesludge interval may be longerthan this depending on usage.

Page 30: Water Waste Water Treatment
Page 31: Water Waste Water Treatment

29

BalmoralSBR

BALMORAL SBRSequential Batch Reactor

� Controlled batching of water treatment provides unrivalledeffluent quality

� Bespoke designs available to meet specific flow and loadrequirements

� Completely separate control kiosk houses a modern PLCcontrol system

� No high voltage electrics within the tanks providing a safe design

� Internal venting pipework

� Tested and approved by the BBA (Cert. no. 01/3786) andIrish Agrément Board (Cert. no. 02/0150)

Key benefits

Page 32: Water Waste Water Treatment
Page 33: Water Waste Water Treatment

The Balmoral Sequential Batch Reactor (SBR) combinesthe efficiency of activated sludge aeration with batchtreatment to provide exceptional effluent quality evenunder extreme loadings.

In common with all Balmoral products, no compromiseis made with regard to quality or design and theadvanced technology and materials used in themanufacture of the SBR will ensure a lifetime ofreliable service with the very minimum of maintenance.

The Balmoral SBR has been designed and built byBalmoral Tanks in association with the University ofAbertay, Dundee, Waste Water Technology Centre,who acted as external consultants. The universitycarried out an in-depth test programme during whichthe SBR was tested and evaluated alongside a leadingcompetitors model.

The aim of the development programme was to designa unit which was not only very robust and reliable butwhich would provide outstanding effluent qualitywithout the need for expensive “add on” equipmentand would also overcome technical problems - (suchas peak surges through the bio-zone), which mostcurrent designs have failed to adequately address.

The final report from the WWTC confirms that theBalmoral SBR out-performs its rivals in almost everyrespect and that it has the capability to meet even themost onerous effluent requirement.

How does it work?Crude wastewater enters the Primary Settlement Tank(PST) (2) where gross solids settle out and thesupernatant liquor remaining near the surface can bedrawn off. Substantial “buffer” storage volume isprovided in the PST to cope with even the mostextreme peak flow loadings (3).

A set volume (or batch) of the liquor is transferred tothe Reactor Vessel (RV) by an “air-lift” pump (4)where it is mixed and aerated by a powerful airbubble diffuser (5) for a period of 4 hours. During thisaeration cycle efficient oxygen transfer cultures adense “soup” of bacteria (the active sludge) whichfeeds on the sewage liquor thereby removing most ofthe organic pollutants. After aeration, the bubblediffuser is switched off and there is a settling periodduring which the dense activated sludge sinks to thebottom of the RV leaving behind the clarifiedeffluent, (7) which is then discharged into the drainby a second “air-lift” pump (9).

All functions within the tanks are operated by airpower which is supplied by an electric air compressorand the system is controlled by an integratedprogrammable unit which monitors the process totake account of flow conditions.

BALMORAL SBRSequential Batch Reactor

1 110-160mm inlet depending on model2 Primary settlement chamber3 Buffer storage of 2/3 daily flow4 Air lift pump5 Bubble diffuser6 Activated sludge storage7 Clarified effluent8 Batch cycle volume of 1/3 daily flow9 Second air lift pump10 110-160mm outlet depending on model11 Desludge point12 600mm manway lid: bolted down and sealed

Design features� Unrivalled effluent quality

� Reduces main pollutants including ammonia by 96%

� Batching system eliminates peak surges

� Controlled by an integrated programmable control unit

� Automatic “holiday mode” aeration cycle

� Powered by an air compressor

� Safe - no 240 volt electrics within tanks

� Very robust - one piece moulded polyethylene body

� Reliable - all components easily accessible

� The Balmoral SBR is tested and approved by the British Boardof Agrément (Cert. no. 94/3021) and the Irish AgrémentBoard (Cert no. 02.0150)

2

3

5

1

6

7

10

9

12

8

11

Settled sludge level

Minimum level

Maximum level

Fill

4

31

Page 34: Water Waste Water Treatment

32

Inlet Outlet

Ø760mm

Control kiosk

Service duct(Ø110mm)

Ground level

Ø1275

Ø2045

3005

1130

1240

Desludging point

620

SBR6Specifications

Population served 1-6

Max hydraulic load (l/day) 1200

Organic load (g BOD5/day) 360

NH3 (g/per day) 48

Total capacity (litres) 3800

Diameter (mm) 2045

Height (mm) 3005

Empty plant weight (kg) 352

Energy usage (kWh/day) 2.16

Inlet invert (mm) 1130

Outlet invert (mm) 1240

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BSBR6

Accreditation BBA (Cert No. 01/3786)IAB (Cert No. 02/0150)

Inlet Outlet

Ø760mm

Control kiosk

Service duct(Ø110mm)

Ground level

Ø1275

Ø2365

3175

975

1085

Desludging point62

0SBR12Specifications

Population served 7-12

Max hydraulic load (l/day) 2400

Organic load (g BOD5/day) 720

NH3 (g/per day) 96

Total capacity (litres) 6000

Diameter (mm) 2365

Height (mm) 3175

Empty plant weight (kg) 439

Energy usage (kWh/day) 2.16

Inlet invert (mm) 975

Outlet invert (mm) 1085

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 12 months

Product code BSBR12

Accreditation BBA (Cert No. 01/3786)IAB (Cert No. 02/0150)

Balmoral Sequential Batch Reactor

Page 35: Water Waste Water Treatment

Inlet

Ø760mm ControlkioskRodding point Rodding point

Ø760mm

Ground level

Ø1275

300

Ø2365

37 Ø1275

Ø2365

3005

932

Outlet

Primary tank Aeration/final settlement tank

977

Fall between tanksapprox 1 in 40mm

33

SpecificationsPopulation served 13-18

Max hydraulic load (l/day) 3600

Organic load (g BOD5/day) 1080

NH3 (g/per day) 144

Total capacity (litres) 12000

Overall length (mm) 5030 (minimum)

Width (mm) Ø2365

Height (mm) 3005

Empty plant weight (kg) 587

Energy usage (kWh/day) 13.3

Inlet invert (mm) 932

Outlet invert (mm) 977

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 6 months

Product code BSBR18

Accreditation BBA (Cert No. 01/3786)IAB (Cert No. 02/0150)SB

R18

Inlet

Ø760mm ControlkioskRodding point Rodding point

Ø760mm

Ground level

Ø1275

300

Ø2365

37 Ø1275

Ø2365

3005

932

Outlet

Primary tank Aeration/final settlement tank

977

Fall between tanksapprox 1 in 40mm

SpecificationsPopulation served 19-24

Max hydraulic load (l/day) 4800

Organic load (g BOD5/day) 1440

NH3 (g/per day) 192

Total capacity (litres) 12000

Overall length (mm) 5030 (minimum)

Width (mm) Ø2365

Height (mm) 3005

Empty plant weight (kg) 587

Energy usage (kWh/day) 13.3

Inlet invert (mm) 932

Outlet invert (mm) 977

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 6 months

Product code BSBR24

Accreditation BBA (Cert No. 01/3786)IAB (Cert No. 02/0150)SB

R24

Balmoral Sequential Batch Reactor

Page 36: Water Waste Water Treatment

Rodding pointRodding pointØ760mm

Ground level

370

275

Ø1275

Ø23653050

OutletInlet

Primary tank Aeration/final settlement tank

977

Controlkiosk

Fall between tanksapprox 1 in 40mm

2824

3005

898

Pedestrian dutymanhole cover

34

SpecificationsPopulation served 24-36

Max hydraulic load (l/day) 7200

Organic load (g BOD5/day) 2160

NH3 (g/per day) 288

Total capacity (litres) 14000

Overall length (mm) 5785 (minimum)

Width (mm) Ø2365

Height (mm) 3005

Empty plant weight (kg) 747

Energy usage (kWh/day) 13.3

Inlet invert (mm) 898

Outlet invert (mm) 977

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 6 months

Product code BSBR36

Accreditation BBA (Cert No. 01/3786)IAB (Cert No. 02/0150)SBR36

Rodding point

Pedestrian dutymanhole cover

Pedestrian dutymanhole cover

Ground level

303

59

3050

Primary tank Aeration/final settlement tank

Controlkiosk

Fall betweentanks approx1 in 40mm

2824

921

1030

Rodding point

3050

InletOutlet

SpecificationsPopulation served 37-48

Max hydraulic load (l/day) 9600

Organic load (g BOD5/day) 2880

NH3 (g/per day) 384

Total capacity (litres) 16000

Overall length (mm) 6403 (minimum)

Width (mm) 2275

Height (mm) 2824

Empty plant weight (kg) 906

Energy usage (kWh/day) 13.3

Inlet invert (mm) 921

Outlet invert (mm) 1030

Pipework fitting (mm) Ø110

Lid size (mm) Ø760

Desludging interval 6 months

Product code BSBR48

Accreditation BBA (Cert No. 01/3786)IAB (Cert No. 02/0150)SB

R48

Balmoral Sequential Batch Reactor

Page 37: Water Waste Water Treatment

35

SBR+Balmoral Tanks also designs andmanufactures wastewater treatmentplants for larger commercial anddomestic applications. Pleasecontact Balmoral Tanks to discussyour project requirements.

Page 38: Water Waste Water Treatment
Page 39: Water Waste Water Treatment

Balmoralrainw

aterharvesting

systems

BALMORALRAINWATERHARVESTINGSYSTEMS

37

Page 40: Water Waste Water Treatment
Page 41: Water Waste Water Treatment

Harvest around 50% of your water needsThe chart above shows the breakdown of water use in atypical household.

The Balmoral Home-Harvest and Garden-Harvest rainwatersystems make it easy for you to gather and reuse thisrainwater.

Save on your water costsBy recycling your rainwater, a Balmoral rainwater harvestingsystem can help save up to 50% of your metered water costs.Meters are provided free of charge from most watercompanies so the sooner you fit a Balmoral system the sooneryou start saving.

Balmoral rainwater harvesting systemsBalmoral rainwater harvesting systems reduce the demand formains water provision. Many springs and rivers are naturallyfed by groundwater and are important for wetlands and theirecosystems. More than 25% of groundwater sources are at riskbecause of abstraction pressures.

By gathering and recycling rainwater, Balmoral’s harvestingsystems reduce the volume of discharged rainwater andcontribute to reduced flood risks. The loading on combinedsewer overflows is also lowered resulting in improved riverwater quality.

Balmoral offers two kinds of rainwater harvesting tanks forhome and garden purposes:

Balmoral Home-Harvest Rainwater SystemTM - page 44Designed for easy installation and reliable operation, eachsystem provides the highest quality non-potable rainwater fortoilet flushing, washing machines, garden irrigation andvehicle washing purposes.

Balmoral Garden-Harvest Rainwater SystemTM - page 46An easy to install, high performance and economic solutionfor the keen gardener providing free water, even duringhosepipe bans, all year round.

Balmoral Garden-HarvestRainwater SystemTM

Personal washing 33.3%

Dishwashing 7.7%

Direct heating systems 0.1%

Toilets 33.3% (harvestable)

Gardens 6.1% (harvestable)

Clothes washing 14% (harvestable)

Car washing 0.7% (harvestable)

Miscellaneous 13.1%

Gardens 6.1%(harvestable)

Toilets 33.3%(harvestable)

Car washing 0.7%(harvestable)

Clothes washing 14%(harvestable)

Total 45.8% harvestableSource: Environment Agency

Balmoral Home-HarvestRainwater SystemTM

39

Page 42: Water Waste Water Treatment

40

What size of tank do you need?The size of a rainwater holding tank must match the demandfor water with its availability as closely as possible. The tanksize chosen must be a balance between budget, storagecapacity and the need to enable an overflow at least twice ayear to flush out floating debris. The Environment Agencypublication ‘Harvesting rainwater for domestic uses: aninformation guide’ provides an authoritative and independentmeans of calculating the optimum size of tank for householdwater use and suggests that 5% of the annual rainwater supply,or of the annual rainwater demand, is used to determine theoptimum size of tank, using the lower figure of the two.

What is your annual rainwater supply?

Tank size (litres) = Catchment area m2 x Drainage coefficient x Filter efficiency x Annual rainfall mm x 5%

Example 130m2 x 0.8 x 0.9 x 1125mm x 5%

= 5,265 litres

Annual rainfallThis can vary dramatically over a relatively small area, so areading (in mm) within 10 miles of the property is preferable.The local Environment Agency or the Met Office can supplyrainfall data or you can use the regional guide figures we haveprovided in the table below. In the ‘annual rainwater supplyexample’ above we have used the average figure for the UK.

Region Average rainfall (mm)UK 1125S England 781N England 944Wales 1433Scotland 1520NI 1111EIRE E 875 (Source: Irish Met service)EIRE W 1125

5% is a constant percentage factor

Catchment areaIs the width and length of your roof in m2. Rememberyou do not have to collect water from the entire roof.This can help to reduce installation costs.

Drainage coefficientIt is difficult to collect every drop of rain that falls onyour roof. Light rainfall will only wet your roof and thenevaporate and heavy rainfall can overflow gutters. Adrainage coefficient is used to adjust the tank sizecalculation to allow for this.

Roof type Drainage coefficientPitched roof tiles 0.75-0.9Flat roof smooth tiles 0.5Flat roof with gravel layer 0.4

Filter efficiencyDuring initial rainfall some rainwater will skim over thefilter, clearing away any debris. During heavy flow somerainfall will also bypass the filter to overflow ensuringthat the filter is not overloaded. 90% of rainfall iscaught, therefore the Balmoral filter coefficient is 0.9.

Average usageOn average, each person in the UK usesaround 150 litres of water every day and45.8% of this total could be rainwater insteadof mains water.

What is your annual rainwater demand?

Tank size (litres) = Average usage x people in household x days/year x % harvestable x 5%

Example = 150 litres x 4 x 365 x 45.8% x 5%

= 5,015 litres

Page 43: Water Waste Water Treatment

41

Rainwater supply

What is the right tank for you?Balmoral produces four tanks for domestic use so all you needto do is select the tank that best suits your needs. To helpyou we have calculated the correct size of tank for you basedon your annual rainwater supply and your annual rainwaterdemand. Select the tank size from either table and if theyindicate different tank sizes then you should choose thesmaller of the two. These tables have been produced usingthe average annual rainfall for the region and assumes apitched roof with a conservative drainage coefficient of 0.8.If your roof area is beyond the capacity of our largest tank orif the number of people indicates a smaller tank than yourroof area will collect, then this is acceptable as it will meanthat the tank will overflow more often, flushing out anyfloating debris.

Tank size calculatorCalculate the size of tank required using the ‘Rainwatersupply’ and ‘Rainwater demand’ tables below then select thesmaller of the two tank sizes.

Roof size m2

Region50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230

South England

North England

Wales

Scotland

NorthernIreland

ROI East

ROI West

BST-27

BST-38

BST-45

BST-60

BST-27

BST-38

BST-45

BST-60

BST-27

BST-38

BST-45

BST-60

BST-27

BST-38

BST-45

BST-60

BST-27

BST-38

BST-45

BST-60

BST-27

BST-38

BST-45

BST-60

BST-27

BST-38

BST-45

BST-60

Number of peopleRegion

1 2 3 4 5 6+

Tank

BST-27

BST-38

BST-60

Rainwater demand

BST-27 BST-38 BST-45 BST-60

Balmoral tank sizes

Page 44: Water Waste Water Treatment

42

The ultimate undergroundrainwater harvesting tankBalmoral rainwater tanks are produced in four sizes, ie,2728, 3800, 4546 and 6000 litres, and are rotationallymoulded in tough polyethylene which offers a very highlevel of impact resistance.

Design features� High impact strength at low temperatures

� Stress free mouldings provides extra strength

� Leak proof, single piece moulding

� Lightweight, easy to handle

� Corrosion resistant

� Low maintenance

� UV protected

� Recyclable

By recycling your rainwater,a Balmoral rainwaterharvesting system can helpsave up to 50% of yourmetered water costs

Page 45: Water Waste Water Treatment

43

How does it work?Home-Harvest systemPlease read in conjunction with the illustration onpage 44.

A wall-mounted pump (1) draws water from thesystem to provide clean water for refilling a toiletcistern or for using with a washing machine. Theguided suction line (4) allows the pump to provide thecleanest possible water from the tank.

Garden-Harvest systemPlease read in conjunction with the illustrations onpage 46.

A submersible pump (1) mounted within the rainwaterharvesting system is connected to a garden water tap.A timer switch (6) allows the user to set specificperiods of use. When this period expires the pump willswitch off automatically.

Page 46: Water Waste Water Treatment

44

BalmoralHome-HarvestRainwater SystemTM

Pump control unitLocated inside the house Easy access to all electro-mechanical partsNo pump in the tank Simpler installationAuto mains water backup No loss of service. Does not refill tank from

mains so less pipework and wasted waterFully insulated cover Quiet operation10 litre break tank with air gap Meets water regulations

Filter assemblyLift out 0.2mm stainless steel filter Improved water qualitySelf cleaning filter Low maintenanceLocated within tank Saves space. Easier installation and accessOverflow skimmer with U-bend overflow Improved water quality90% water yield Saves more water

Calmed inletMinimises disturbance of settled matter Improved water quality

Guided suction pipeUnique precision guided system Improved water qualityensures that water is taken onlyfrom the cleanest part of the tankAdditional filter on suction inlet Improved water qualityPrecisely locates the tank Minimises wasted waterlow level sensor

Telescopic turretAdjustable height Minimises installation depth.

Allows a neat flush finish with the ground

1

2

3

4

5

1

2

4

5

3

2

5

1

4

C

B

A

E

C

D 1 Pump control unit2 Filter assembly3 Calmed inlet4 Guided suction pipe5 Telescopic turretA Mains bypass connectionB Appliance connectionC Suction lineD InletE Inlet overflow

External pipework A, B, C, Dand E are not supplied aspart of the tank package

3

Page 47: Water Waste Water Treatment

InletInlet overflow

Reducedinvertcut line

Ø760mm

Ground level

Footprint Ø

Diameter Ø

Hei

ght

Guided suction intakec/w one-way valveand filter

Minimum water levelsensor controlsautomatic mains back-up Calmed inlet

Filter assembly

840

900

Balmoral Home-Harvest Rainwater Tank

Specifications BST-27-HH BST-38-HH BST-45-HH BST-60-HH

Population served 1 2 3 4+

Capacity (litres) 2700 3800 4546 6000

Diameter (mm) Ø1840 Ø2045 Ø2165 Ø2365

Height (mm) 2400 2640 2770 3005

Footprint (mm) Ø1275 Ø1275 Ø1275 Ø1275

Empty plant weight (kg) 190 230 260 310

Energy usage* (kWh/day) 0.25 0.25 0.25 0.25

Inlet invert (mm) 840 840 840 840

Inlet overflow (mm) 900 900 900 900

Pipework fitting (mm) Ø110 Ø110 Ø110 Ø110

Lid size (mm) Ø760 Ø760 Ø760 Ø760

Filter checking interval 2 months 2 months 2 months 2 months

Product code BST-27-HH BST-38-HH BST-45-HH BST-60-HH

45

Balmoral Home-Harvest Rainwater SystemTM

* Based on one-person average usage

Page 48: Water Waste Water Treatment

46

BalmoralGarden-HarvestRainwater SystemTM

Submersible pumpPump located in tank Self contained easy installationHigh power pump High flow over long hose lengthRemote On/Off switch Convenient and simple operation

Filter assemblyLift out 0.2mm stainless steel filter Improved water qualitySelf cleaning filter Low maintenanceLocated within tank Saves space. Easier installation and accessOverflow skimmer with U-bend overflow Improved water quality90% water yield Saves more water

Calmed inletMinimises disturbance of settled matter Improved water quality

Telescopic turretAdjustable height Minimises installation depth.

Allows a neat flush finish with the ground

1

2

3

4

1

2

4

3

2

5

1

4

C B

A

6

1 Submersible pump2 Filter assembly3 Calmed inlet4 Guided suction pipe5 Telescopic turret6 IP rated switchA Mains bypass connectionB Appliance connectionC Suction line

External pipework A, B and Care not supplied as part ofthe tank package

3

Page 49: Water Waste Water Treatment

47

InletInlet overflow

Reducedinvertcut line

Ø760mm

Ground level

Footprint Ø

Diameter Ø

Hei

ght

1 ” delivery hose

Stainless steelsubmersible pumpc/w float valve Calmed inlet

Filter assembly

840

900

14

Balmoral Garden-Harvest Rainwater Tank

Specifications BST-27-GH BST-38-GH BST-45-GH BST-60-GH

Population served 1 2 3 4+

Capacity (litres) 2700 3800 4546 6000

Diameter (mm) Ø1840 Ø2045 Ø2165 Ø2365

Height (mm) 2400 2640 2770 3005

Footprint (mm) Ø1275 Ø1275 Ø1275 Ø1275

Empty plant weight (kg) 180 220 250 300

Energy usage* (kWh/day) 1 1 1 1

Inlet invert (mm) 840 840 840 840

Inlet overflow (mm) 900 900 900 900

Pipework fitting (mm) Ø110 Ø110 Ø110 Ø110

Lid size (mm) Ø760 Ø760 Ø760 Ø760

Filter checking interval 12 months 12 months 12 months 12 months

Product code BST-27-GH BST-38-GH BST-45-GH BST-60-GH

Balmoral Garden-Harvest Rainwater SystemTM

* Based on one-person average usage

Page 50: Water Waste Water Treatment
Page 51: Water Waste Water Treatment

Water

storage

WATER STORAGE

49

Reference should be made to the following• WRAS Water Regulations Guide ISBN 0-9539708-0-9• Grants are available up to £800 from local authorities (Scotland only)For more information visit www.privatewatersupplies.gov.uk

• Information and Guidance Note document (IGN No. 9-04-04) “Cold Water StorageCisterns - Design Recommendations for Mains Supply Inlets”

• www.defra.co.uk

Page 52: Water Waste Water Treatment
Page 53: Water Waste Water Treatment

Potable and non-potablewater storage tanksBalmoral’s rotationally moulded water tanks comply fully with UnitedKingdom water regulations.

The tanks are suitable for many applications and are provided withmoulded-in areas for different types of fittings to be attached as required.

The above ground tanks can be used for mains supplied potable water. Theunderground models should only be specified for non-mains supplied wateror indirect mains supplied water.

Tank features� Suitable for agricultural, commercial and domestic use

� 500mm diameter access points

� Moulded in features to accept inlets, volume indicators, etc

� UV stabilised material

� Corrosion resistant

� Lightweight, one-piece construction

Domestic water storageTo reduce the risk of water contamination in domesticsituations, Balmoral water tanks must be installed inaccordance with UK water regulations with particularreference being paid to Water Regulations Advisory Scheme(WRAS) Water Regulations Guide.

For private water supplies, advice should be sought from therelevant authority on the correct type of installation shouldthe water supply be subject to local controls.

Installation of a Balmoral water storage tank for domesticpurposes must follow WRAS guidelines to reduce the risk ofwater contamination and provide a hygienic water supply.This may require additional fittings (see page 52) conformingto Schedule 2, section 7, paragraph 16 of the WRAS WaterRegulations Guide (previously referred to as Byelaw 30 andByelaw 60).

These additional fittings should only be fitted when tanks arefor indoor use. If in doubt, refer to WRAS Water RegulationsGuide or contact your local authority.

For private water supplies the user should obtain advice onthe correct type of installation from the relevant authority ifthe water supply is subject to local regulations or controls.

Underground water storage

Above ground water storage

Emergency water storage

Agricultural and commercialwater storageBalmoral water storage tanks are widely used in theagricultural and commercial sectors as a cost-effectivesolution for mains supplied and non-mains supplied waterstorage. Typical uses for water storage tanks in these sectorsinclude rainwater harvesting, fire-fighting systems, cleaningsystems, water bowsers, sanitation and domestic facilities.

51

Page 54: Water Waste Water Treatment

52

Balmoral G16.13 kitA Balmoral water storage tank G16.13 kitcontains the following items:

Tank fittings for up to 1” inlet

a 3/4” warning pipe

b 1 1/2” screened breather

c 2” overflow

d 2” tank connector

• Instruction leaflet

or

Tank fittings for over 1” inlet

a 3/4” warning pipe

b 1 1/2” screened breather

c 2 x 2” overflows

d 2 x 2” tank connectors

• Instruction leaflet

UK water regulationsWater regulations, “The Water Supply (Water Fittings)Regulations 1999” in England and Wales and “The WaterByelaws 2000, Scotland”, replaced the previous regional WaterByelaws which were seen to be outmoded, restrictive and outof step with the rest of the world in terms of watermanagement and health and safety.

Fundamentally, the Water Byelaws 2000, Scotland, mirror theregulations adopted for England and Wales as do those whichapply in Northern Ireland.

To assist in a greater understanding of the regulations, theWater Regulations Advisory Scheme (WRAS) published its WaterRegulations Guide early in 2001.

Guidance summaryThe following guidance is a summary aimed at providing aninitial assessment of the contamination risk and the designmeasures required to remain regulation compliant.

At the outset the water suppliers’ consent must be obtainedbefore work starts on any proposed installation. Failure to doso could result in criminal prosecution.

The regulations classify water quality into five categories.They range from Fluid Category 1, classed as “wholesome”water (straight from the tap as supplied by the waterundertaker) to Fluid Category 5, fluid representing a serioushealth hazard (grey water recycling cisterns, abattoirsupplies, etc).

Under the old Byelaws classification, Fluid Category 1 wastermed “water for domestic purposes” or “potable water”.With five Fluid Categories the appropriate safeguards to beselected for a given application may seem a bit daunting,however the Information and Guidance Note document (IGNNo. 9-04-04) entitled “Cold Water Storage Cisterns – DesignRecommendations for Mains Supply Inlets” acts as a quickguide to simplify the choices.

Inlet level(Inlet not supplied)

a warning pipec/d overflow level

b breather

Inlet level(Inlet not supplied)

a warning pipec/d overflow level

b breather

Location of G16.13 kitHorizontal tank

Vertical tank

Optional fittings

a 3/4” Warning pipe breather

b 1 1/2” screened breather

c 2” overflow

d 2” tank connector

Any cold water storage cistern or tank together with its fittingsrequires to be constructed of materials conforming to regulationrequirements. Balmoral tanks are compliant with the WRASRegulator’s Performance Specifications.

Certain basic design parameters are applicable:a The overflow pipe, inclusive of any insect screen, if fitted,shall be capable of draining the maximum inlet flow withoutcompromising the inlet air gap

b For cisterns of less than 1000 litres actual capacity theoverflow/warning pipe diameter shall not be less than 19mmand to ensure air gap compliance is recommended to be sizedat twice the diameter of the inlet pipe.

Cisterns greater than 1000 litres actual capacity require both anoverflow and a warning pipe/warning device. The minimumrecommended warning pipe diameter is 25mm with the overflowsized at twice that of the inlet diameter. (Or the equivalentdiameter sized at twice the summation of inlet pipe bore areasfor tanks with multiple inlets).

Most cisterns store wholesome water used in part, at least, fordomestic purposes irrespective of other downstream system uses.Given those circumstances the cistern must then comply withClause G16.13 of the Government Guidance as depicted in Figure 1.

Figure 1

Float valve

Screened air inlet

Sleeve for vent pipeSecurely fixed access cover

Straight or dippedentry to warning pipe

Warning pipe and/oroverflow screen

Insulation against frostand undue warming

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53

Fluid Categories 1-4A simplified yet no less compliant approach to cistern designand application is to consider only the implications required tomeet either Fluid Category 4 or 5 requirements.

Any cistern encompassing cistern design features, advised inFigure 1, and incorporating a Type AF Air Gap on its inlet/s willencompass fully the backflow protection requirementsnecessary for Fluid Categories 1-4 with little or no penalty inlost storage capacity.

The general thinking behind this recommended approach isthat it’s better to be safe than sorry. It is considered there aregreater inherent risks associated with larger and morecomplex water supply systems when limited information maybe available.

This design approach, which covers approximately 90% of allcistern installations, provides for greater uniformity ofapplication throughout the water supply industry.

Figure 2 sets out the relative positions of a cistern’s inletdevice relative to its warning pipe, overflow and normal topwater level for a Type AF air gap requirement.

Figure 2

Figures 3-5 illustrate, for various cistern capacities, therecommended plumbing arrangements compliant with providing TypeAF Air Gap protection applicable for cisterns installed in domesticand commercial applications.

Figure 3: Cistern < 1000 litres

Figure 4: Cistern 1000-5000 litres

Figure 5: Cisterns > 5000 litres

Occasions can arise within commercial and industrial premises wherethe protection provided by a Type AF Air Gap is not adequate tocover the contamination risk of a Fluid Category 5 application. Inthese circumstances a higher degree of protection must be adopted.

INLET

Overflow

25mm minimum

Air gap 2 x inlet dia

25mm minimum

Warning pipe

NORMAL TOP WATER LEVEL

CRITICAL WATER LEVELSHUT OFFLEVEL

Air gap 2 x inlet dia 25mm minimum

Warning pipe/overflow

SHUT OFFLEVEL

Air gap 2 x inlet dia 25mm minimum

25mm minimum

Overflow pipe

Warning pipe

SHUT OFFLEVEL

Air gap 2 x inlet diaLevel at which audible orvisible alarm is activated

50mm minimumbetween invert ofoverflow pipe andshut off level

Overflow pipe

Balmoral tanks are compliantwith the WRAS Regulator’sPerformance Specifications

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Fluid Category 5The Regulations advise that a Type AB Air Gap must protectmains water supplies to any cistern installation providing storagefor applications defined as a Fluid Category 5.

For closed top cisterns, Type AB Air Gap protection is requiredincorporating the use of a Weir Spill Slot in the cistern sidewallto act as the emergency overflow. Figure 6 advises the basiccistern configuration to meet this requirement.

Figure 6: Similar to old Type A Air Gap

The specific design details of a Type AB Air Gap is identified inBSEN 13077: 2003 “Devices to prevent pollution by backflow ofpotable water – Air gap with non circular overflow (unrestricted)– Family A, type B”.

It is acceptable to have the slot opening screened provided thesize of the slot is increased in proportion to the obstructionimposed by the installation of the screening material.

SummaryMost cistern applications, whether domestic, commercial orindustrial, can be accommodated by the adoption of Type AF AirGap protection to the mains inlet supply.

Cistern applications, which in part at least require the storedwater to supply an industrial process, laboratory, etc, can beaccommodated by adopting Type AB Air Gap protection to themains inlet supply.

Additional information on determining the classification of afluid category is obtained from the WRAS IGN publicationnumber 9-04-04.

54

Air gap 2 x inlet dia

Head over weirWeir spill slotunscreened

Overflow pipe

Warning pipe

25mm minimum

Page 57: Water Waste Water Treatment

Capacity (Litres) 1250Length (mm) 1800Width (mm) 1320Height (mm) 915Product code BWST-LP1250

LP1250

Capacity (Litres) 1365Length (mm) 1300Width (mm) 1300Height (mm) 1320Product code BWST-V1365

Capacity (Litres) 1800Length (mm) 1400Width (mm) 1400Height (mm) 1500Product code BWST-V1800

Capacity (Litres) 2600Length (mm) 1580Width (mm) 1580Height (mm) 1665Product code BWST-V2600

Capacity (Litres) 3500Length (mm) 2800Width (mm) 1700Height (mm) 1326Product code BWST-H3500

Capacity (Litres) 3635Length (mm) 1800Width (mm) 1800Height (mm) 1778Product code BWST-V3635

Above ground tank for mains supplied andnon-mains supplied potable water storage V1365 Above ground tank for mains supplied and

non-mains supplied potable water storage

V1800 Above ground tank for mains supplied andnon-mains supplied potable water storage V2600 Above ground tank for mains supplied and

non-mains supplied potable water storage

H3500 Above ground tank for mains supplied andnon-mains supplied potable water storage V3635 Above ground tank for mains supplied and

non-mains supplied potable water storage

Balmoral water storage tanks

55

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56

Capacity (Litres) 5455Length (mm) 2000Width (mm) 2000Height (mm) 2100Product code BWST-V5455

Capacity (Litres) 7270Length (mm) 2085Width (mm) 2085Height (mm) 2426Product code BWST-V7270

Capacity (Litres) 10000Length (mm) 2330Width (mm) 2330Height (mm) 2920Product code BWST-V10000

Capacity (Litres) 1370Length (mm) 1900Width (mm) 1150Height (mm) 1969Product code BWST-UG1370-B1

Capacity (Litres) 2410Length (mm) 2350Width (mm) 1350Height (mm) 2171Product code BWST-UG2410-B2

Capacity (Litres) 3090Length (mm) 3200Width (mm) 1350Height (mm) 2171Product code BWST-UG3090-B3

V5455 Above ground tank for mains supplied andnon-mains supplied potable water storage V7270 Above ground tank for mains supplied and

non-mains supplied potable water storage

V10000 Above ground tank for mains supplied andnon-mains supplied potable water storage UG1370 Underground tank for non-mains supplied

or indirect mains supplied water storage

UG2410 Underground tank for non-mains suppliedor indirect mains supplied water storage UG3090 Underground tank for non-mains supplied

or indirect mains supplied water storage

Balmoral water storage tanks

Page 59: Water Waste Water Treatment

The tanks are rotationally moulded in blackpolyethylene material and incorporate the followingfeatures:

� Unique stackable design for safe, economicalstorage

� High level of security and anti-vandalismfeatures

� Integral plinth

� Elevated hygiene characteristics, includingguards to protect taps

� Drainage system capable of draining tankfully after cleaning

� Manufactured from WRAS approved materials

� Low maintenance

� Forklift slots and lifting eyes for ease of handling

57

BalmoralHydrostackThe Balmoral Hydrostack has been specifically designedfor the supply of water in emergency situations. Thesetanks are ideally suited for use in situations such aswater shortages due to summer droughts, burst waterpipes or Water Authority maintenance periods wheresupply is temporarily “cut-off”.

Ø600mmrotomoulded lid

Ø1584

R792

517

Integral plinth

Tank

1895

779

555

1740

SpecificationsCapacity (Litres) 1150Diameter (mm) 1584Height (mm) 1895Plinth height (mm) 779

Lid (mm) Ø600

Tank colour BlackProduct code BWST-HYSK-BLKAccreditation WRAS approved

(Cert No. 0605132)

Page 60: Water Waste Water Treatment
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BalmoralTanks

BALMORAL TANKSwww.balmoraltanks.com

59

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Balmoral GroupBalmoral Group Holdings Ltd is a privately owned businessheadquartered in Aberdeen, UK, and has been providingsolutions to the civil and environmental, building and energysectors since 1980.

The enterprise has been built upon research, development andtechnical innovation. It is this commitment to progress thathas helped the company achieve its status as a market leaderin its chosen fields of operation.

The company has, for a number of years, successfullyoperated manufacturing processes at Balmoral Park which areapproved and strictly regulated by the Scottish EnvironmentProtection Agency under Part B of the EnvironmentalProtection Act 1990.

Quality AssuranceBalmoral Tanks Ltd is certified to BS EN ISO 9001. Thecompany’s QA manuals are available for examination by allclients.

The Balmoral name has become abrand in its own right, synonymouswith product development,technical excellence andmanufacturing efficiency.

www.balmoraltanks.com

Balmoral Tanks LtdBalmoral Tanks Ltd, a division of Balmoral Group HoldingsLtd, is a leading European engineering design andmanufacturing company.

As a result of significant investment in people and plant,the company produces what is believed to be the mostcomprehensive range of tank products available from asingle source in the EU.

Civil engineering, wastewater treatment, drainage, fuel oilcontainment, bulk liquid and potable water storage sectorsare all key sectors for the company.

Visit balmoraltanks.com for a comprehensive overview ofthe company and its products.

Other Balmoral Tanks products� Wastewater treatment plant� Rainwater harvesting systems� Bulk liquid storage� Chemical storage� Potable/non-potable water storage� Fuel oil storage and dispensing� Trade moulding� GRP sectional water storage� Steel sectional water storage

Balmoral Tanks

61

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Balmoral Tanks

Page 65: Water Waste Water Treatment

HEAD OFFICE AND FACTORIES

Balmoral Park, Loirston, Aberdeen AB12 3GY, Scotland

Tel +44 (0)1224 859000 Fax +44 (0)1224 859123

Email [email protected] www.balmoraltanks.com

WWT-0509-REV00

BALMORAL TANKS

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