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?