1.
The Coalition for Buzzards Bay
(2011 Decision Maker Workshops – Reducing Nitrogen Pollution)
BioprocessH20
i
Biological Treatment and Filtration Systems

2.
Presentation Outline
Nitrogen Removal Technologies:
Suspended Growth and Fixed Film Processes
• Airlift MBR Overview
• Airlift MBR Case Study
• MBBR/IFAS Overview
• MBBR Case Study

3.
bioprocessH2O Background
• Location: Portsmouth, RI
• Founded: In 2002
• F
Focus: Fi d Fil and Membranes Systems for
Fixed Film d M b
S t
f
Wastewater Treatment and Water Reuse Applications
• Active In-House Research & Development Programs
(including bench scale pilot and treatability studies)

4.
bioprocessH2O Offerings
Membrane Technology
• BioPULSE™ - Municipal/Industrial (Airlift)
• BioFLOW – Primarily Industrial (Crossflow)
• T iPURE™ - Tertiary for Water Reuse
TriPURE™
Biofilm Technology
• Static Loop Composite Chord (HRBF, SAGR)
• Moving Bed Biofilm Reactor (MBBR/IFAS)
Photobioreactor Technology
• Algae Growth and Harvesting

5.
Membrane BioReactor Timeline
[60-70s]
Side Stream
Crossflow
MBRs
[80s Today]
[80s-Today]
Immersed
MBR –
Hollow
Fiber and
Flat Sheets
[Early 2000 -…]
Airlift MBR
utilizing
pressurized side
stream
membranes

6.
bioPULSE™ Airlift External
Tubular M
T b l Membrane Technology
b
T h l
Advantages over Immersed Membranes
•
Ease of Installation
•
Automated Membrane Cleaning without Chemical
A t
t dM b
Cl
i
ith t Ch i l
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

7.
Airlift™ MBR Components
Air dif.

8.
Norit AirLift™ bioPULSE™ Tubular
Membranes Technical Specifications
•
Membrane type:
yp
PVDF, (5.2 mm dia.)
,(
)
•
Membrane Area/8” Module:
(355 ft2/module)
•
Configuration:
Parallel
•
Feed/module:
~6 scfm air ~100 gpm MLSS
6
air, 100
•
Energy consumption:
~1.0 – 1.25 kWh/1000 gallons
•
Flux (Ave/Peak):
25 GFD / 45 GFD
•
•
TMP:
pH:
1 – 5 psig
2 – 10 S.U.
•
Membrane life:
y
7-10 years

9.
Typical Airlift™ MBR System
(Process Flow)
De Aeration
Chemical Dosing
UF
Fine Screening
Fi
S
i
(2 mm)
Backwash
Bio-Reactor
8-12 g/L
Permeate control
AirLift
Circulation flow
Drain

10.
Typical Airlift Membrane Backwash and Cleaning Cycles
yp
g y
Hydraulic Cleaning:
• Frequency:
• Duration:
• Drain/Flush:
Maintenance Cleaning:
• Frequency:
• Duration:
• Chemicals:
Backwash (automated)
5 – 10 minutes
5 – 10 seconds
4 – 6 cycles/day
CEB (automated)
4-8 weeks
2 – 4 hours total
NaOCl & NaOH
HCl or Citric acid

11.
AirliftTM MBR Nitrogen Removal System
(Flow Diagram – MLE Process)

12.
Norit Airlift™ MBR Title 22 Certification
Point L
P i t Loma WWTP – S
San Di
Diego, CA (R
(Report, July 2006*)
J l
•
•
•
•
•
•
Permeate Production – Average 30 GFD for 20 hours and
hours,
Peak 45 GFD for 4 hours
Equivalent to ~10,000 gpd/8” module
q
,
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

13.
CASE STUDY: Ootmarsum – Netherlands
Plant Start-Up, October 2007
(MBR Pil t d f
Piloted from 2003 2005)
2003-2005)

14.
Ootmarsum – Netherlands

15.
WWTP Location: Ootmarsum - Netherlands

16.
WWTP Prior to Upgrade: Ootmarsum - Netherlands
• Original plant installed in early 1970’s
• Region developed into a summer vacation destination
• Peak wet weather flows can be >4X dry weather flows
• Upcoming legislation driving N&P limits

17.
Ootmarsum – The Netherlands
Conventional Activated
Sludge Plant
Airlift MBR
i lif

18.
Process Overview
sand filter
CAS
pretreatment
overflow
MBR Piloted from 2003-2005, the drain/flush cycle
resulted due to pilot testing

19.
MBR Process Flow
anaerobic
drum screen
d
Aeration tank
anoxic
membranes

20.
Plant Loading & Effluent Requirements
Population Equivalent
14,000 / 18,500
Dry Weather Flow
D W th Fl
0.95
0 95 MGD
Wet Weather Flow
4.1 MGD
Parameter
(mg/L)
Influent*
Effluent
Limit
Effluent
Target
COD
715
-
-
BOD
227
5
2
TSS
350
5
2
TKN
58
-
-
NH3-N
26
0.8
0.5
Total N
58
10
4
Total
T t lP
13.7
13 7
1
0.15
0 15
*Annual Averages

21.
Design Parameters
Parameters
F:M Ratio
MLSS (Nominal)
Design SRT
Equalization Tank Volume
Plant Flows:
Dry Weather Flow
Wet Weather Flow
MBR
CAS
Units
0.04
0.04
#BOD/#MLSS
10,000
3500
mg/L
18
18
days
0.19
SHARED
MG
0.48
0.95
0.48
3.17
MGD
MGD
Biological Tank Volume/HRT
Bi l i l T k V l
/HRT
(based on DWF)
Anaerobic
Anoxic
Aeration
Secondary Clarifier
Membrane Design Flux:
Dry Weather Flow
Wet Weather Flow
MG/Hours
MG/Hours
/
MG/Hours
.035/1.7
/
.048/2.4
0.2/10
None
~100
Feet
24-28
32-37
NA
NA
GFD
GFD

22.
Site Photographs

23.
Site Photographs

24.
Effluent Data
Parameter
( g )
(mg/L)
MBR
CAS/Sand
Filter
Effluent
(combined)
(
)
Effluent
Targets
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

25.
bioFAS™ LCM & MBBR/IFAS Process
Modified Ludzak Ettinger (MLE)
Process Advantages
• Retrofit and Upgrade Existing Conventional Activated Sludge WWTPs
pg
g
g
• Denitrification to less than 10 mg/L TN
• Compact Footprint

26.
bioFAS MBBR/IFAS
bioFAS MBBR/IFAS Nitrogen Conversion/Removal
pp
Process Applications

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)

27.
bioFAS 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)
 Rectangular Carbon Steel Tank

28.
Submerged Attached Growth LCM
Racks being installed in a basin

29.
Modular Treatment Unit Components

30.
bioFAS™ MLE IFAS Process
(Anoxic = 100’L x 50’W, Aerobic = 220’L x 50’W) – 3MGD  6MGD

31.
MBBR/IFAS REACTOR INTERNAL EQUIPMENT
/
Q
Coarse Bubble Aeration Grid
Media Retention Screens

32.
Industrial Site, Meriden CT

33.
Animal Rendering Plant – TN
(Two Stage MBBR, Upgrade of RBC’s)
•
Table 1: Influent Concentration Ranges and Effluent
Concentrations reported b
C
i
d between June 1, 2010 and September
20 0
dS
b
30, 2010 (based on grab samples)
Parameter
Influent
Effluent
Flow (GPM)
30
30
BOD (mg/L)
350-1,800
Not Measured
TKN
250-550
Not Measured
Ammonia-N (mg/L)
200-500
<5
Nitrite-N (mg/L)
<5
<1
Nitrate-N (mg/L)
5-80
200-400
TSS (mg/L)
350-800
400-800
DO (mg/L)
<1
>4
80-100
80-100
Temp (F)

34.
Rendering Plant – TN

35.
Rendering Plant – TN

36.
QUESTIONS?