Mbbr Agra Ppt

44
JICA Assisted AGRA WATER SUPPLY PROJECT (ID-P185) Uttar Pradesh Jal Nigam NJS Consultants Co. Ltd., Japan In Association with Mott MacDonald, UK TCE Consulting Engineers, India Shah Technical Consultants Pvt. Ltd, India

Transcript of Mbbr Agra Ppt

Page 1: Mbbr Agra Ppt

JICA Assisted

AGRA WATER SUPPLY PROJECT

(ID-P185)

Uttar Pradesh Jal Nigam

NJS Consultants Co. Ltd., Japan

In Association with

Mott MacDonald, UKTCE Consulting Engineers, IndiaShah Technical Consultants Pvt.

Ltd, India

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144 MLD WATER TREATMENT PLANT

PROCESS DESIGN

Dr. Uday Kelkar

Dr. Ghulam Mustafa

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Outline

Yamuna Water Characteristics

Major Issues with Yamuna Raw Water

Product Water Criteria

Treatment Processes for 144 MLD WTP

MBBR Process

Membrane Filtration

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Major Issues with Raw Yamuna Water

Deteriorated Quality of Yamuna waterNH3-N as high as 40 TIMES against limit < 1 mg/lit.

BOD as high as 12 TIMES against limit < 3 mg/lit.

PRE-CHLORINATON DEMAND as high as 134 mg/lit.which is too high

Excessive chlorination is used to oxidize Ammonia which is carcinogenic. (Cancer Causing)

Conventional treatment process not suitable toreduce BOD, NH3 and Nitrate from Yamuna rawwater.

Need for a Biological Treatment Process

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Future Population of Agra (Census of India 2001)

1,000,000

1,500,000

2,000,000

2,500,000

3,000,000

2001 2006 2011 2016 2021 2026 2031 2036

Year

Agra

Persons

2,033,000

2,909,000

1,260,000

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Water Demand (Agra)

0

100,000

200,000

300,000

400,000

500,000

600,000

700,000

800,000

2006 2011 2016 2021 2026 2031 2036

Year

m3/day Raw water demand (No pipe rehabilitation)

Raw water demand (pipe rehabilitation)

Total Capacity (New plant +WWI+WWII) 510 MLD

Existing Plants (WWI+WWII)

366 MLD

Ganga Water

340 MLD

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Availability of Raw Water at Agra

Town YearWater

Demand (Cusec)

Ganga Water

(Cusec)

Yamuna Water

(Cusec)

% additional

Yamuna Water

AGRA

2006 142 140 -- 0%

2011 160 140 20 12%

2016 179 140 39 22%

2021 199 140 59 30%

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COMPARATIVE STATEMENT OF GANGA & YAMUNA RIVER WATER QUALITY

Data of Year 2005

Sl. No.

Particular Permissible Limit as per CPCB & BIS

Ganga Water at Mathura

(Mat Branch)

Yamuna River at Agra

1 pH 6.5 – 8.5 8.75 7.1-8.28

2 Chloride 600 16 264

3 Total Hardness 122 356

4 Total Dissolved Solids (TDS)

2000 190 250-1420

5 Chlorine Demand - 1.00 23.50

6 DO >4.0 9.60 0-8.4

7 BOD <3.0 0.60 7-26

8 COD <10.0 5.10 27-83

9 TKN (Org N + NH3) - - 2.24-26.5

10 MPN, Index/100 ml <5000 280 23000

Note:- All parameters are in mg/l, except pH and MPN index.

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0

5

10

15

20

25

30

35

40

BO

D5

mg

/L

Month

Minimum

Maximum

Typical Variation of BOD5 in Yamuna Raw Water

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Raw Water Quality of Yamuna River at Sikandra

Adopted from Agra Jal Sansthan, Sikandra Plant

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0.00

20.00

40.00

60.00

80.00

100.00

120.00

140.00

160.00

0 5 10 15 20 25 30

Ch

lori

ne

De

ma

nd

(m

g/L

)

Ammonia (mg/L)

Ammonia to Chlorine Demand

Actual Cl2 Demand

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Product Water Criteria

Product Water Characteristics :

Parameters Units Design Values

Flow rate MLD 141

pH - 7-8.5

TN mg/L < 10

NH3 mg/L <2 for 95% time

NO3 mg/L <40

BOD5 mg/L <2

Turbidity NTU ≤0.5

TSS mg/L <0.5

True Color Pt/Co Scale ≤ 5

Total Coliform Counts/100ml 0.0

Total Virus Counts/100ml 0.0

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Alternative Technology

•Reliability and sustainability

•Technical feasibility

•Plant footprint

•Capital cost

•Operational cost

Process Options

Conventional Activated Sludge Process

Moving Bed Bio-Reactor (MBBR)

Membrane Bio-Reactor (MBR)

Reverse Osmosis Process (RO)

Other Criteria

Proven technology

Reliability and sustainability

Plant footprint

Capital cost

Operational cost

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144 MLD AWTP Design

Treatment Processes:

Pre-Setting Tank - with Tube Setter

Fine Screen – 5 mm Auto Cleaning Screen

Moving Bed Bio-Reactor Process

Membrane Filtration

Chlorination

Water Distribution System

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WW2B CONSTRUCTION SITE

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Major Processes and its Use

Advance Process

Pre-settlers to reduce TSS level in downstream processes

Auto Cleaning Fine Screens

to safeguard the downstream processes

MBBR Biological Process

to reduce ammonia, Nitrate and BOD

Ultra Filtration process

to eliminate TSS, bacteria and virus

Pollution Control

Sludge Treatment Facility

to recover water and to avoid waste sludge discharge to river

Waste discharge routing to the river

to discharge waste stream to downstream side of the raw water intake

Operational Control

Plant Automation using SCADA

It requires additional instrumentation, sensors and actuators

144 MLD WATER TREATMENT PLANT AT SIKANDRA

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MBBR Salient Features

Significantly lower footprint required

Suitable for high-load applications

Simple operation

Low O&M costs

No sludge re-circulation

Low sludge yield

Simultaneous BOD and Nitrogen Removal

High quality effluent

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MBBR for BOD & NH3 Reduction

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Typical Configurations of MBBR for Nitrogen Removal

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144 MLD MBBR DesignConfiguration

Feed EthanolEffluent

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Material: HDPE (virgin or recycled)

Size: 10- 14 mm

Surface area: 500-1000 m²/m³ of carriers

Geometry: Highly open external surface

Biomass Carriers

AquaWise BioMass Carrier

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Case Study for Ammonia Removal MBBR Plant - Israel

0

5

10

15

20

25

30

35

40

45

50

55

07-0

1-2

010

12-0

1-2

010

17-0

1-2

010

22-0

1-2

010

27-0

1-2

010

01-0

2-2

010

06-0

2-2

010

11-0

2-2

010

16-0

2-2

010

NH

4-N

co

nc.

[mg

/l]

Date

NH4-N inlet (mg/l) NH4-N outlet (mg/l)

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Influent

Effluent

Design Effluent Concentration

Results - MBBR Pilot Plant - Florida

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MBBR-UF Pilot Plant

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MBBR-UF Pilot Plant – Agra WTP

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SecondaryWastewater

MBBR Membrane Filters

Membrane filters

Filtration size 0.1 to 0.01 microns

TSS in filtrate <0.5 mg/L

Status in India Being considered

Protozoa 0 mg/L

Faecal Coliforms < 2 / 100 ML

Membrane Filtration

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Removal of Bacterial Contaminants

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Membrane Contaminant Removal

Reverse Osmosis

Nano Ultra Micro

0.0001 0.001 0.01 0.1 1.0 10 100

.

Pore Diameter - microns

1 micron

Hemoglobin0.007 microns

Na Ion0.00037 microns

Giardia Lamblia &

Cryptosporidium

3 to 5 microns

Water0.0002 microns

Virus

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Hollow Fiber Configurations

More difficult to remove solids from confined pressure vessels, tightly packed fibers

Use higher pressures as membranes become fouled

Expensive pressure vessel required for each unit

Open tank configuration, loosely packed fibers for easier solids removal

Low pressure, vacuum-driven operation

Simpler scale-up for larger systems

PressurizedImmersed

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Tertiary Membrane Competition

Koch

Memcor CP

(USFilter)

Pall MicrozaNORIT Memcor CS (USFilter)

Hydranautics HydraCAP Trisep Spirasep

Dow / Omexell

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Thank You!

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Biological Treatment

Aerobic Treatment (Nitrification)Biodegradation of Organic compounds (N) by Heterotrophs -Release of NH3

Nitrification by Autotrophs - Production of Nitrate

High O2 demand – 4.57 g O2/ g N oxidized

Reduction in Alkalinity due to 2H+

Anoxic Treatment (Denitrification)Low oxygen requirement (O2<0.5 mg/L)

NO3- and NO2- are reduced to N

Growth of denitrifier bacteria (Anammox) is slower than aerobicnitrifiers

Reduction of total nitrogen

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Design Raw Water Quality of Yamuna River

Influent Water Characteristics

Influent Data Units Minimum* Maximum # Design ^

Daily influent flow MLD 144 144 144

Total BOD5 mg/L 9.6 58.0 33.8

Insoluble BOD5 mg/L 3.8 23.2 13.5

COD mg/L 32.0 72.0 52.0

TSS mg/L 30 500 100

Ammonia as NH3 mg/L 4.1 45.0 24.5

Nitrate as NO3 mg/L 15.8 35 25.4

Nitrite as NO2 mg/L 1.6 3.5 2.5

Total P mg/L - - 1

Ortho- P mg/L 1

Alkalinity (as CaCO3) 180 320 250

TDS mg/L 350 950 650

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Agra 144 MLD Design Philosophy

Two independent systems –

MBBR for BOD and N removal

UF for TSS removal

Stable and well proven systems

Total BOD <2 mg/L in product water

Total Nitrogen <10 mg/L in product water

Total Coliform – Nil in product water

Total Virus – Nil in product water

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144 MLD MBBR Design

1st and 2nd stages – Aerobic stages for carbon and Ammonia reduction

3rd stage – Anoxic stage for denitrification

External Carbon Source

4rd stage – Aerobic stage for re-aeration to remove excess COD

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Various Option Studied for Meeting Raw Water Demand

1. Ground Water

2. River Yamuna

3. Water from River Chambal

4. Water from lower Ganga Canal

5. Water from upper Ganga Canal

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POPULATION FORECAST & REQUIREMENT OF RAW WATER

Year Population Water Demand

(mld) @(150+15%)

= 172.50 lpcd

Bulk Water

Demand (MLD)

Total Water

Demand (MLD)

Raw Water Demand (10% wastage)

In MLD In cusec

2001 1,259,979 217 67 284 312 126

2006 1,419,980 245 75 320 352 142

2011 1,600,299 276 83 359 395 160

2016 1,803,517 311 91 402 442 179

2021 2,032,540 350 98 448 493 199

2026 2,290,647 395 105 500 550 222

2031 2,581,529 445 112 557 613 248

2036 2,909,350 502 120 622 684 276

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RA

S

Sludge

Treatment

Moving Bed Bio Reactor

Media – Highly advanced Biomass Carriers

Increased effective surface area

Unique aeration design

Attached growth Biological Process

No need for ML recirculation

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Hollow Fiber ConfigurationsInside-Out Outside-In

Greater Pre-screening Minimal

More frequent Cleaning Frequency Less frequent

Harsher cleaning to

clean fiber interior

Extent of Cleaning Milder cleaning to

clean fiber exterior

Irreversible internal

fouling,

shorter membrane life

Fouling Reversible external fouling,

longer membrane life

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MBBR/IFAS Advantages

• Both for new applications and upgrades especially for tertiary nitrification at lower BOD availability

Small Footprint

• Lower amount of civil works needed

• Shorter project life cycle

• Lower maintenance costs (operation )

Cost Effective (CAPEX & OPEX)

• Upgrade existing plants easily

• Enables gradual expansion – just-in-time investment

• Deals with inflow peaks

Flexibility & Scalability

• Improved resistance to hydraulic shock loads

• Shorter recovery time after toxic loads

• Extended carriers life time

Stability & Durability

• Using recycled materials

• Less land usage, scenery obstruction and odors

• Less sludge

Environmental Friendly

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144 MLD MBBR Design Criteria

Parameters Unit Stage-1 Stage-2 Stage-3 Stage-4

Reactor Type Aerobic Aerobic Anoxic Aerobic

Flow rate m3/hr 6790 6790 6790 6790

Nitrification Rate gNH4/m2/d 1.07 1.2 - 0.98

De-Nitrification Rate gNO3-N/m2/d - - 2.5 -

Carrier Fill Ratio % 50-60 50-60 25-35 25-35

Carrier Size mm L x mm D 12 x 12 12 x 12 12 x 12 12 x 12

Hydraulic Retention min 25 21 44 16

COD Requirement gCOD/ gNO3-N - - 2.86 -

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Parameters Unit Value

Oxygen Requirement gO2/ g NH3-N 4.57

gO2/ g COD 1.0

Bubble Type - Fine

Min. Operating Temp. oC 15

oC 30

Alpha Factor - 0.75

Beta Factor - 0.98

Oxygen Transfer Efficiency

gO2/m3 Air –m of submergence

16

Air Flow per Diffuser m3/hr 7-10

Total Air Requirement at Max. Temperature

m3/hr 7068

144 MLD MBBR Design Criteria