Wastewater Treatment Presenter: Marius Caprariu Introducing IBI Group

Wastewater Treatment Presenter: Marius Caprariu

Introducing IBI Group

December 2012

Wastewater Treatment

Traditional Wastewater Treatment

2IBI Groupwww.ibigroup.com

The objective of conventional sewage treatment plant designs has historically been compliance with environmental regulations for the lowest capital cost

High rate solids separation processes

Efficient aeration, N & P removal

Effluent quality and space (membranes)

Biological removal of nitrogen & phosphorus

UV, onsite NaOCl generation

Municipal WWTP Unit Operations• Primary treatment

• Secondary treatment

• Tertiary treatment

• Nutrient removal

• Disinfection


Traditional Wastewater Treatment

All the municipalities have developed, operated and maintained their wastewater treatment plants through collection of taxes from its customers.

As the costs for raw materials, labour, energy and chemicals have all increased dramatically, the wastewater utilities are faced with higher costs that can only translate in higher taxes for the people.



Consumer prices increase



Water rates increase 2001-2012



Future Wastewater Treatment

The primary revenue source to offset treatment plant capital recovery and operating expenses will be to recover some or all resources from the wastewater treatment plant and sell them to interested entities.



Future Wastewater Treatment


Continuous improvements will enable new objectives in future treatment plants necessary to conform with societal megatrends

Megatrends

Sustainability

Energy

Climate change

Less tax revenue

Resource scarcity

Objectives

From net energy user to net energy producer

Industrial and potable reuse of effluent

Small carbon footprint

Recover inorganics

New revenue streams

Public perception of “sewage treatment”

Development Areas

Micro fuel cells

Nutrient recovery

Greenhouse gas mitigation

Energy management

Treated water reuse experience

Wastewater Treatment8

IBI Groupwww.ibigroup.com

What do we understand at IBI?

Design Criteria Today Tomorrow

Water Use Once Many Times

Water Quality Potable Fit for Use

Wastewater Once through Recycle and Reuse

Storm Water Fast Disposal Harvest

System Capacity Meet Demand Manage Demand

Infrastructure Hard-piped, Treatment Add Natural Methods

System Type Large, Centralized Smaller, Decentralized

System Design Standard New Technologies

Infrastructure Integration Separate Water, Wastewater One Water

…design the facilities for the challenges of today and tomorrow.


Recovery systems at a producer level


Three Types Black Water - Wastewater from toilets Grey Water - Untreated wastewater that has not come into contact

with sewage (showers, laundry, dishwashers, bathing) Yellow Water - Undiluted urine


Recovery systems at a treatment level


Self Powered Sewage Treatment – i.e. ESSDE

Energy recovery


The DEMON® PROCESS


Origin


Nitration – Nitritation – Deammonificiation


Nitratation – Nitritation –Deammonification


ARA Strass / Austria / 300 kg N/d


Start-Up


World Energy Globe Award

+++++++the DEMON®-system is nominated for the World Energy Globe award+++++++

Awards presentation on 26 May 2008 in the Plenary Hall in Brussels. Awards for the best environmental projects are presented by Kofi Anan and the President of the EU Parliament Pöttering


Heidelberg


Heidelberg / Seed Sludge


Thun


Glarnerland, Switzerland, 220 kg N/d Single-Sludge SBR


Glarnerland, Switzerland, 220 kg N/dSingle-Sludge SBR


Single Sludge System


DEMON - Cyclone


Single Sludge System


Planctomycetes


Saving of Consumables


Award DEMON® Heidelberg


EssDe®


Energy balance

Jan 0

9

Feb 09

Mar 09

Apr 09

May 09

Jun 0

9Ju

l 09

Aug 09

Sep 09

Oct 09

Nov 09

Dec 09

Jan 1

0

Feb 10

Mar 10

Apr 10

May 10

Jun 1

0Ju

l 10

Aug 10

Sep 10

Oct 10

Nov 10

Dec 10

Jan 1

1

Feb 11

Mar 11

0

20000

40000

60000

80000

100000

120000

140000

Energy consumption WWTP Glarnerland - both trainsaeration system, mixers, secondary clarifiers

start DEMON®main stream

terminationDEMON® main stream

normal operation

problems secondary clarifier NO 3-N =

3 -

7 m

g/l

NO 3-N =

5 - 10

mg/

l


Ontario and Canada




Self Powered Sewage Treatment – i.e. ESSDE

Energy recoveryAdvantages:

• Maximum energy surplus, thanks to minimal oxygen consumption and maximized biogas production

• The process generates electricity – wastewater treatment becomes a power generator

• Pollutants in the wastewater will no longer be seen as a problem but as an energy source

• Case studies – Montego Bay, Jamaica – can produce approximately 6 MW for approximately 200,000 people

• Comparable costs with a traditional activated sludge plant

• Instead of consuming more than 2 million in energy, the plant will produce more than $900,000 annually, which in 10 years means more than $30,000,000 form NWC




Energy Efficient Treatment – i.e. STM

Energy recovery




Energy Efficient Treatment – i.e. STM

Energy recovery

Advantages:

• No blowers, aeration piping, or diffusers means very little energy consumption

• No odors, no noise, & small footprint are additional benefits

• In terms of energy requirements & range of treatment capability, the STM ranks highly compared with all other secondary treatment technologies




Energy Efficient Treatment – i.e. Diffusaire

Energy recovery




Energy Efficient Treatment – i.e. Diffusaire

Energy recovery

Advantages:

• Reduces traditional aeration costs by over 50%

• Easy installation: There is no need to empty the reactor basin or stop the treatment process for both installation and ongoing maintenance

• Modularity: Each unit can be serviced independently without affecting the operations of the rest of the system




Energy Efficient Treatment – i.e. SABRE

Energy recovery




Energy Efficient Treatment – i.e. SABRE

Energy recoveryAdvantages:

• 95% less aeration energy, 85% less total energy

• 30%-50% reduction in the amount of excess sludge compared to conventional processes

• Modular design, odorless with a reduced footprint

• Case study, 580 units housing development, Pointe Hanover, Jamaica: conventional activated sludge plant consumes 8.5 kW/h for the aeration and SABRE consumes only 1 kW/h

• Capital cost is marginally higher, however the life cycle cost is lower than a traditional activated sludge plant


Lessons to take home


• Embrace new technologies as they will add revenue streams to your utility.

• Your operations and maintenance costs will be reduced

• When you implement a new facility or upgrade an existing one, evaluate the technologies based on the life cycle costs and not capital costs

• Start with a small plant and test the technology and train the operators

• Always ask the consultants or contractors for reduced energy consumption technologies, otherwise you will be stuck with high energy bill every year

• We are here to help, so just ….. Call or e-mail


Need more information?


[email protected]


Need more information?


Thank you for your time and attention

Wastewater Treatment Presenter: Marius Caprariu Introducing IBI Group

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