Different technologies fort t t t twastewater treatment

1. ASP        (Activated Sludge Process)2. MBBR    ( Moving Bed Bio Reactor)3 SBR        (Sequential Batch Reactor)3. SBR        (Sequential Batch Reactor)4. UASB     (Upflow Anaerobic Sludge Blanket)5. MBR      (Membrane Bio Reactor)6 WSP      (W t  St bili ti  P d)6. WSP      (Waste Stabilization Pond)

Comparison among  Wastewater TreatmentWastewater Treatment     

TechnologiesSr.N

o. Assessment Parameter/Technology ASP MBBR SBR UASB+ASP MBR WSP

Overall HRT. (Through the entire plant) 16-20 h 8-10 h 16-18 h 16-18 h 8-12 h 8-15 h

1 Performance parameters

Effluent BOD, mg/L <20 <30 <10 <20 <5 <40

Effluent SS mg/L <30 <30 <20 <30 <5 <100

Faecal Coliform, log unit upto 3<4 upto 2<3 upto 3<4 upto 2<3 upto 5<6 upto 2<3

T N Removal Efficiency % 10 20 10 20 70 80 10 20 70 80 10 20T-N Removal Efficiency % 10-20 10-20 70-80 10-20 70-80 10-20

2 Average Capital Cost, Rs. Lacs/MLD 80 80 80 80 400 30Civil Works, % of capital costs 60 40 30 65 20 90

E & M works, % of capital costs 40 60 70 35 80 10

3 Average Aera, Required m2 / MLD 800 400 400 800 200 6000

Sr.No.

Assessment Parameter/Technology ASP MBBR SBR UASB+ASP MBR WSP

4 Operation & Maintenance Costs

(i) Energy Costs(i) Energy Costs

Avg. Technology Power requirement, kWh/d/MLD 180 200 170 120 300 2

Avg. Non-Technology Power requirement, kWh/d/MLD 4 2.5 2.5 4.5 2.5 2.5

Total Daily Power Requirement, kWh/d/MLD(avg) 184 202.5 172.5 124.5 302.5 4.5

Daily Power Cost (@ Rs. 4.0/kWhr), Rs./MLD/hr 31 34 29 21 50 0.75

Yearly Power Cost, Rs. Lacs PA/MLD 2.65 2.92 2.48 1.79 4.36 0.06

(ii) Repair cost

Civil works per annum, as % of civil works cost 1 1 1 2 1

E&M works, as % of E & M works cost 3 3 2.5 3.5 3

Civil works maintenance, Rs. Lacs PA/MLD 0.8 0.8 0.34 1.6 0.3

E & M works Maintenance, Rs. Lacs 2.4 2.4 2 2.8 0.9

A l i R L 3 2 3 2 2 34 4 4 1 2Annual repairs costs, Rs. Lacs 3.2 3.2 2.34 4.4 1.2

(iii) Recurring Cost, (Chemicals etc), Rs. Lacs PA/MLD 0.3 0.4 0.2 0.5 0.2

(iv) Manpower O & M cost

Manager, Rs. Lacs PA 4.8 4.8 4.8 4.8 4.8

Chemist/Engineer, Rs. Lacs PA 2.4 2.4 2.4 2.4 2.4

Operators, Rs. lac PA 1.44 1.44 1.44 1.44 1.44

Skilled Technicians, Rs. lacs PA 1.08 1.08 1.08 1.08 1.08

Unskilled personal Rs PA 0 96 0 96 0 96 0 96 0 96Unskilled personal, Rs. PA 0.96 0.96 0.96 0.96 0.96

Manpower Reqd. & their costs, Rs. lacs PA/MLD 9.96 8.12 8.03 9.96 50.00 5.88

(v) Total annual O & M costs, Rs. lacs PA/MLD 16.11 14.64 13.05 16.65 50.00 7.67

Sr.No. Assessment Parameter/Technology ASP MBBR SBR UASB+ASP MBR WSP

Avg. Land Cost Assumed, Rs. lacs/m2 0.01 0.01 0.01 0.01 0.01 0.01

Unit Land Cost, Rs. Lacs/MLD 8.00 4.00 4.00 8.00 2.00 60.00

Unit Capital Cost including land cost, Rs. lacs/MLD 88.00 84.00 84.00 88.00 402.00 90.00

Rate of compound interest, (adopted),% per year 10.00 10.00 10.00 10.00 10.00 10.00

5 Treatment cost, Rs. /KL 7.30 6.89 6.46 7.44 28.10 3.18

6 Unit life cycle cost for 15 years, Rs. lacs/MLD 210.53 195.35 183.27 214.66 214.66 148.3295

SBR TechnologySBR Technology (Sequential Batch Reactor)

• SPECIALITIES :

I b ilt E li ti  ‐ In‐built Equalization. ‐ BOD/ COD/ SS Removal.‐ Settling.g‐ Decanting.‐ Nitrification. 

f‐ Denitrification.‐ Bio‐P removal.‐ All process done in single stage.All process done in single stage.

Quality of treated Effluent

Parameter. SBR Tech. Conventional Tech.

BOD < 10 < 30

COD < 50 < 250COD < 50 < 250

TSS < 20 < 30

NH3 – N < 2 No Treatment.

P < 1 No Treatment.

BENEFITS

‐ 50 % Reduction in power consumption.‐ 50 % Reduction in land requirement.‐ Fully  automatic, Computerized ( PLC/ SCADA)‐ Much higher plant life due to excellent material.L   i  ‐ Low maintenance cost.

‐ Treated effluent can be used for Horticulture/ Industries.

PROCESSStep 1 : The raw wastewater is filled in tank. Aeration isdone simultaneously for a pre‐determined period to aeratethe effluent along with biomassthe effluent along with biomass.

• Step 2 : After aeration cycle, the biomass settles underperfect settling conditionsperfect settling conditions.

• Step 3 : Once settled the supernatant is removed from thetop using decanter. Solids are wasted from the tank duringp g gdecanting.

Above steps in sequence constitute a cycle.

CYCLE DETAILSCYCLE DETAILS

REACTORREACTOR

DECANTER SELECTOR

INLET

OUTLET

SLUDGE PUMPDIFFUSER BIOMASS

AUTOMATIONAUTOMATION

CHARACTERISTICS  OF COMPONENTS

Complete Decanting device in stainless steel

No impact of high TDS waters

No corrosion

No maintenance

Minimum 30 years equipment life

World class aesthetic look

REACTOR TANKSREACTOR TANKS

FILL & AERATIONFILL & AERATION

SETTLINGSETTLING

DECANTINGDECANTING

CHLORINE CONTACT TANKCHLORINE CONTACT TANK

THANK YOU