innovative techonolgies - membrane and moving bed biofilm reactor
DESCRIPTION
A presentation about innovative technologies to remove nitrogen from wastewater. Presented by Peter Annunziato from BioprocessH2O during the Buzzards Bay Coalition's 2011 Decision Makers Workshop series. Learn more at www.savebuzzardsbay.org/DecisionMakersTRANSCRIPT
The Coalition for Buzzards Bay (2011 Decision Maker Workshops Reducing Nitrogen Pollution)(2011 Decision Maker Workshops – Reducing Nitrogen Pollution)
iBioprocessH20Biological Treatment and Filtration Systems
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
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)
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
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
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
Airlift™ MBR Components
Air dif.
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
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
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
AirliftTM MBR Nitrogen Removal System(Flow Diagram MLE Process)(Flow Diagram – MLE Process)
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
CASE STUDY: Ootmarsum – NetherlandsPlant Start-Up, October 2007
(MBR Pil t d f 2003 2005)(MBR Piloted from 2003-2005)
Ootmarsum – Netherlands
WWTP Location: Ootmarsum - Netherlands
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
Ootmarsum – The Netherlands
Conventional Activated Sludge PlantSludge Plant
i lifAirlift MBR
Process OverviewProcess Overview
sand filter
CAS
pretreatment
overflow
CAS
overflow
MBR Piloted from 2003-2005, the drain/flush cycle resulted due to pilot testing
MBR Process FlowMBR Process Flow
Aeration tankanaerobic anoxic
d membranesdrum screen
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
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
Site Photographs
Site Photographs
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
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
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)
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
Submerged Attached Growth LCM Racks being installed in a basinRacks being installed in a basin
Modular Treatment Unit ComponentsModular Treatment Unit Components
bioFAS™ MLE IFAS Process(Anoxic = 100’L x 50’W, Aerobic = 220’L x 50’W) – 3MGD 6MGD
MBBR/IFAS REACTOR INTERNAL EQUIPMENT/ Q
Coarse Bubble Aeration Grid Media Retention Screens
Industrial Site, Meriden CTIndustrial Site, Meriden CT
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
Rendering Plant – TN
Rendering Plant – TN
QUESTIONS?