Innovative Techonolgies - Membrane and Moving Bed Biofilm Reactor
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Transcript of Innovative Techonolgies - Membrane and Moving Bed Biofilm Reactor
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The Coalition for Buzzards Bay (2011 Decision Maker Workshops Reducing Nitrogen Pollution)(2011 Decision Maker Workshops – Reducing Nitrogen Pollution)
iBioprocessH20Biological Treatment and Filtration Systems
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Presentation OutlinePresentation Outline
Nitrogen Removal Technologies:Suspended Growth and Fixed Film Processes
• Airlift MBR Overview• Airlift MBR Overview
• Airlift MBR Case Study
• MBBR/IFAS Overview
MBBR Case Study• MBBR Case Study
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bioprocessH2O BackgroundbioprocessH2O Background
• Location: Portsmouth, RI
• Founded: In 2002
F Fi d Fil d M b S t f• Focus: Fixed Film and Membranes Systems for Wastewater Treatment and Water Reuse Applications
• Active In-House Research & Development Programs (including bench scale pilot and treatability studies)
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bioprocessH2O Offerings
Membrane Technology• BioPULSE™ - Municipal/Industrial (Airlift)
• BioFLOW – Primarily Industrial (Crossflow)
T iPURE™• TriPURE™ - Tertiary for Water Reuse
Biofilm Technology• Static Loop Composite Chord (HRBF, SAGR)• Moving Bed Biofilm Reactor (MBBR/IFAS)
Photobioreactor Technology• Algae Growth and Harvesting• Algae Growth and Harvesting
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Membrane BioReactor Timeline
[80s-Today]
[Early 2000 -…] Airlift MBR utilizing[80s Today]
Immersed MBR –Hollow
utilizing pressurized side stream membranes
[60-70s] Side Stream Crossflow
Hollow Fiber and Flat Sheets
membranes
CrossflowMBRs
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bioPULSE™ Airlift External T b l M b T h lTubular Membrane Technology
Advantages over Immersed Membranes• Ease of Installation
A t t d M b Cl i ith t Ch i l • Automated Membrane Cleaning without Chemical
or Wastewater Exposure
• Safe Operator Environment (i.e. no confined space,
no MLSS exposure, facilitates service and
membrane replacement)
• No special cranes, lifts or hoists required for O&M
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Airlift™ MBR Components
Air dif.
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Norit AirLift™ bioPULSE™ Tubular Membranes Technical SpecificationsMembranes Technical Specifications
• Membrane type: PVDF, (5.2 mm dia.)yp , ( )• Membrane Area/8” Module: (355 ft2/module)
• Configuration: Parallel
Feed/module: 6 scfm air 100 gpm MLSS• Feed/module: ~6 scfm air, ~100 gpm MLSS
• Energy consumption: ~1.0 – 1.25 kWh/1000 gallons
• Flux (Ave/Peak): 25 GFD / 45 GFD
• TMP: 1 – 5 psig• pH: 2 – 10 S.U.
• Membrane life: 7-10 yearsy
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Typical Airlift™ MBR System(Process Flow)(Process Flow)
De Aeration
Chemical Dosing
UF
Fi S i
Permeate control
Backwash
Bio-Reactor8-12 g/L
Fine Screening (2 mm)
Circulation flowAirLift
Drain
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Typical Airlift Membrane Backwash and Cleaning Cyclesyp g y
Hydraulic Cleaning: Backwash (automated)
• Frequency: 5 – 10 minutes• Duration: 5 – 10 seconds• Drain/Flush: 4 – 6 cycles/dayDrain/Flush: 4 6 cycles/day
Maintenance Cleaning: CEB (automated)• Frequency: 4-8 weeks • Duration: 2 – 4 hours total• Chemicals: NaOCl & NaOH
HCl or Citric acid
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AirliftTM MBR Nitrogen Removal System(Flow Diagram MLE Process)(Flow Diagram – MLE Process)
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Norit Airlift™ MBR Title 22 CertificationP i t L WWTP S Di CA (R J l 2006*)Point Loma WWTP – San Diego, CA (Report, July 2006*)
• Permeate Production Average 30 GFD for 20 hours and• Permeate Production – Average 30 GFD for 20 hours, and Peak 45 GFD for 4 hours
• Equivalent to ~10,000 gpd/8” moduleq , gp• BOD and TSS: <2 mg/L• Total Nitrogen: <5 mg/L• Turbidity: <0.1 NTU• Total Coliform: >5-log removal (bdl for all samples)
* Report prepared by Montgomery Watson Harza
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CASE STUDY: Ootmarsum – NetherlandsPlant Start-Up, October 2007
(MBR Pil t d f 2003 2005)(MBR Piloted from 2003-2005)
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Ootmarsum – Netherlands
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WWTP Location: Ootmarsum - Netherlands
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WWTP Prior to Upgrade: Ootmarsum - Netherlands• Original plant installed in early 1970’s• Region developed into a summer vacation destination• Region developed into a summer vacation destination• Peak wet weather flows can be >4X dry weather flows• Upcoming legislation driving N&P limits
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Ootmarsum – The Netherlands
Conventional Activated Sludge PlantSludge Plant
i lifAirlift MBR
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Process OverviewProcess Overview
sand filter
CAS
pretreatment
overflow
CAS
overflow
MBR Piloted from 2003-2005, the drain/flush cycle resulted due to pilot testing
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MBR Process FlowMBR Process Flow
Aeration tankanaerobic anoxic
d membranesdrum screen
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Plant Loading & Effluent Requirements
Population Equivalent 14,000 / 18,500
D W th Fl 0 95 MGDDry Weather Flow 0.95 MGD
Wet Weather Flow 4.1 MGD
Parameter(mg/L)
Influent* Effluent Limit
EffluentTarget
COD 715 - -
BOD 227 5 2
TSS 350 5 2
TKN 58 - -TKN 58
NH3-N 26 0.8 0.5
Total N 58 10 4
T t l P 13 7 1 0 15Total P 13.7 1 0.15
*Annual Averages
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Design ParametersParameters MBR CAS UnitsParameters MBR CAS Units
F:M Ratio 0.04 0.04 #BOD/#MLSS
MLSS (Nominal) 10,000 3500 mg/L
Design SRT 18 18 days
Equalization Tank Volume 0.19 SHARED MG
Plant Flows:Dry Weather FlowWet Weather Flow
0.480.95
0.483.17
MGDMGD
Bi l i l T k V l /HRTBiological Tank Volume/HRT (based on DWF)
AnaerobicAnoxic
.035/1.7
.048/2.4MG/HoursMG/Hours
Aeration /
0.2/10/
MG/Hours
Secondary Clarifier None ~100 Feet
Membrane Design Flux:Membrane Design Flux:Dry Weather FlowWet Weather Flow
24-2832-37
NANA
GFDGFD
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Site Photographs
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Site Photographs
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Effluent Data
Parameter(mg/L)
MBR CAS/Sand Filter
Effluent(combined)
EffluentTargets( g ) ( ) g
BOD5 0.8 1.3 <1 <2
TSS <1 <1 <1 <2
Total N 3.7 3.3 3.5 <4
Total P* 2.2 1.1 1.7 <0.15
• MBR Start-Up: October 2007• *Bio P removal not optimized and not required by permit
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bioFAS™ LCM & MBBR/IFAS ProcessModified Ludzak Ettinger (MLE)
Process Advantages• Retrofit and Upgrade Existing Conventional Activated Sludge WWTPspg g g• Denitrification to less than 10 mg/L TN• Compact Footprint
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bioFAS MBBR/IFAS
bioFAS MBBR/IFAS Nitrogen Conversion/Removal Process Applicationspp
BOD Reduction/Nitrification/
Total Nitrogen Removal Systems• Modified Ludzak Ettinger (MLE) - BNR• Modified 4-stage Bardenpho – ENR
IFAS or MBBR Processes(25% up to 75% v/v)
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bioFAS Submerged Attached Growth Biofilm ReactorsbioFAS Submerged Attached Growth Biofilm Reactors
LCM Racks - Cost effective retro-fit and upgrade of existing aeration basins and lagoons Support rack with SS looped cord media
Modular Treatment Units (MTU)Modular Treatment Units (MTU) Rectangular Carbon Steel Tank
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Submerged Attached Growth LCM Racks being installed in a basinRacks being installed in a basin
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Modular Treatment Unit ComponentsModular Treatment Unit Components
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bioFAS™ MLE IFAS Process(Anoxic = 100’L x 50’W, Aerobic = 220’L x 50’W) – 3MGD 6MGD
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MBBR/IFAS REACTOR INTERNAL EQUIPMENT/ Q
Coarse Bubble Aeration Grid Media Retention Screens
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Industrial Site, Meriden CTIndustrial Site, Meriden CT
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Animal Rendering Plant – TN(Two Stage MBBR, Upgrade of RBC’s)
• Table 1: Influent Concentration Ranges and Effluent C i d b 20 0 d S bConcentrations reported between June 1, 2010 and September 30, 2010 (based on grab samples)
Parameter Influent EffluentFlow (GPM) 30 30 BOD (mg/L) 350-1,800 Not MeasuredTKN 250-550 Not MeasuredAmmonia-N (mg/L) 200-500 <5Nitrite-N (mg/L) <5 <1Nitrate-N (mg/L) 5-80 200-400TSS (mg/L) 350-800 400-800DO (mg/L) <1 >4Temp (F) 80-100 80-100
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Rendering Plant – TN
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Rendering Plant – TN
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QUESTIONS?