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Technology for Sewage Treatment by Amit Kaushik Sewage Treatment Plant
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Transcript of Stp plants Technology by a3s enviro & Consultants
Technology for Sewage Treatment
by
Amit Kaushik
Sewage Treatment Plant
Water Stress
Yesterday : Water Pollution
Today : Water Stress
Tomorrow : Water Scarcity
STP – Technology Options
Option 1 : ACTIVATED SLUDGE PROCESS (ASP/ EA)
Option 2 : MOVING BED BIO REACTOR (MBBR) / FIXED
AERATED BIOREACTOR (FAB)
Option 3 : SEQUENTIAL BATCH REACTOR (SBR)
Option 4 : MEMBRANE BIO REACTOR (MBR)
Option 5 : UPFLOW ANAEROBIC SLUDGE BLANKET
(UASB) REACTOR
Option 6 : TRICKING FILTER (TF)
ASP- Flow Diagram
AERATION TANK
SECONDARY CLARIFIER
TREATED WATER
DISINFECTION
CHLORINE
SLUDGE DRYING BEDS FILTRATE TO AERATION TANK
SCREENING
GRIT REMOVAL
GRIT RAW
SEWAGE INLET CHAMBER
RAW SEWAGE PUMPING STATION
AT-SC-CHL
ASP - Flow Diagram
AERATION TANK
SECONDARY CLARIFIER
TREATED WATER
DISINFECTION
CHLORINE
SLUDGE DRYING BEDS FILTRATE TO AT
SCREENING
GRIT REMOVAL
GRIT
RAW SEWAGE
PRIMARY CLARIFIER RAW SEWAGE INLET
CHAMBER
SLUDGE STABILISATION
SLUDGE THICKNER
PC-AT-SC-CHL
ASP
ASP
MBBR - Flow Diagram
AERATION TANK (MBBR)
SECONDARY CLARIFIER
TREATED WATER
DISINFECTION
CHLORINE
SLUDGE DRYING BEDS FILTRATE TO AERATION TANK
SCREENING
GRIT REMOVAL
GRIT
RAW SEWAGE
RAW SEWAGE INLET CHAMBER
MBBR-SC-CHL
MBBR
FAB - Flow Diagram
SECONDARY CLARIFIER
TREATED WATER
DISINFECTION
CHLORINE
SLUDGE DRYING BEDS FILTRATE TO AERATION TANK
SCREENING
GRIT REMOVAL
GRIT
RAW SEWAGE
RAW SEWAGE INLET CHAMBER
AERATION TANK (FAB)
FAB-SC-CHL
SCREENING
GRIT REMOVAL
GRIT
TREATED
WATER TO
DIPSOSAL
SBR - 2
INLET
CHAMBER
SLUDGE
SUMP CHLORINE CONTACT TANK
CENTRIFUGE
(SLUDGE DEWATERING)
RETURN SLUDGE
SURPLUS SLUDGE
BLOWER
CHLORINE
SLUDGE
PUMP
RAW SEWAGE
DECANTER DIFFUSERS
BLOWER
SBR - 1
SBR - Flow Diagram SBR-CHL
MBR- Flow Diagram
TREATED WATER
DISINFECTION
CHLORINE
SLUDGE DRYING BEDS FILTRATE TO AERATION TANK
SCREENING
GRIT REMOVAL
GRIT
RAW SEWAGE
RAW SEWAGE INLET CHAMBER
MBR TANK
MBR-CHL
MBR MBR
UASB - Flow Diagram
AERATION TANK / FACULTATIVE LAGOON SECONDARY
CLARIFIER
TREATED WATER
DISINFECTION
CHLORINE
SLUDGE DRYING BEDS FILTRATE TO AT
SCREENING
GRIT REMOVAL
GRIT
RAW SEWAGE
RAW SEWAGE INLET CHAMBER
GAS HOLDER
SLUDGE THICKNER
UASB GAS ENGINE
ELECTRICITY
UASB-AT-SC-CHL
UASB
TRICKLING FILTER - Flow Diagram
AERATION TANK
SECONDARY CLARIFIER
TREATED WATER
DISINFECTION
CHLORINE
SLUDGE DRYING BEDS FILTRATE TO AT
SCREENING
GRIT REMOVAL
GRIT
RAW SEWAGE
RAW SEWAGE INLET CHAMBER
SLUDGE THICKNER
TRICKLING FILTER
TF-AT-SC-CHL
Trickling Filter
Technology Comparison
Parameter UASB+EA ASP+EA MBBR MBR SBR
BOD, mg/l <30 <30 <20-30 <3-<5 <5
COD, mg/l <250 <250 <250 <100 <100
TSS, mg/l <100 <100 <100 <5 <10
TKN &P, mg/l No
Treatment
No
Treatment
No
Treatment
No
Treatment
<10
<2
Area, sq.ft(Aprox) 1500 1300 700 620 840
Cost, Rs. Lac
(100KLD)
29 24.50 22 32.80 25.50
Power cost,
Rs/m3
1.11 1.71 1.8 3.0 1.14
Chemical Cost 0.05 0.05 0.03 0.50 0.03
Maintenance
cost, Rs./m3
0.22 0.22 0.20 1.1 0.25
Power generation Yes Nil Nil Nil Nil
Technology Comparison
0
5
10
15
20
UASB ASP MBBR MBR SBR
Area, Acres
Area, Acres
0
50
100
150
200
250
300
Capital Cost, Crs(100MLD)
UASB
ASP
MBBR
MBR
SBR
Technology Comparison
0
0.5
1
1.5
2
2.5
3
Power, Rs/m3
UASB
ASP
MBBR
MBR
SBR
0
0.2
0.4
0.6
0.8
1
1.2
UASB ASP MBBR MBR SBR
Maintenance cost,Rs./m3
Technology Comparison
Treated Sewage Parameters
Technology Assessment for Sewage Treatment
Criteria
OP ASP MBBR SBR MBR UASB +ASP
TF + ASP
Quality of Treated Effleunt
Nutrient Removal potential
Low Land Requirement potential
Low Capital Cost potential
Low Power Requirement Potential
Electricity generation potential
Low O & M Skills Potential
Low Medium
High Very High
Domestic WW Treatment
TECHNOLOGY SELECTION
Objective 4
Objective 1
Objective 3
Objective 2
Recycle Reuse
Reduce Capital
Cost
Reduce Space
Reduce Operation
Cost
UASB ASP
MBBR
SBR MBR
MBBR
UASB SBR
SBR MBR
Technology Options
Indian Scenario
Domestic Wastewater
Technologies
Treatment & energy
production
Treatment & Reuse
UP, Delhi
Maharashtra Gujarat
AP, Karnataka
Rajasthan, HR, PB
Treatment
Yesterday : Water Pollution
Water Stress
Today : Water Stress
Tomorrow : Water Scarcity
Day After Tomorrow : Water War
Thank You !
Do not let the well dry, to learn the worth of Water !
Amit Kaushik
