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Sewerage Treatment Plant:-

1) The works shall includes Planning, designing, preparing of BOQ, Preparing of
Inventory, supplying, installation, testing & commissioning of STP of
appropriate technology i/c all civil and E&M work (including plant room)
complete with of all equipments such as collection tank, MBBR tank, Pumps,
Treated water, Storage tank, Filtration plant with MGF, ACF, softening plant,
UV Plant etc., Statutory clearances wherever required will have to take by the
firm (i.e. C.P.C.B./ W.B.P.C.B. which is applicable).
2) Capacity- Minimum 750 KLD. (STP of latest technology MBBR of capacity
considering 4500 users of the Hostel Building. Hence minimum STP capacity
for Girls/Boys Hostel is 750 KLD).
3) Calculation for quantity of waste water generated from different sources and
design waste water treatment plant.
4) Design and prepare the drawings for pre treatment of waste water from
kitchen and dining halls before connecting to sewage system i/c.
management of solid wastes, oil & grease etc. by suitable treatment and
disposal system.
5) Obtain approval from statutory and local bodies for waste disposal shall be
done by the contractor.
6) Third party approval of detailed drawings and data sheets of suppliers/
manufacturers and incorporation of suggestion /modification in the drawings
shall be done by the contractor.

7) TECHNICAL SPECIFICATIONS OF STP:

Sewerage Treatment Plant for two nos. Girls Hostel and Three nos. Boys
Hostel shall be carried out by the Contractor as directed by Engineer-in-
charge.
Note: GRIHA norms & relevant IS standards (output water for irrigation/
flushing/ sewer/ portable) for output water parameters should be
complied. The Sewage Treatment Plant shall be designed on MBBR
(Moving Bed Biofilm Reactor) technology for the following raw sewage
flow rate and characteristics:
a) Sewage Generation And Characteristics
(For Girls Hostels & Boys Hostels)

Flow Rate : 750 KLD (750 KLD SEWAGE LOAD)

KLD : EFFLUENT TREATED LOAD)
BOD5 : 250 450 mg/l
COD : 600 800 mg/l
TSS : 250 400 mg/l
pH : 6.5 8.5
Oil & Grease : 50 mg/l
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Temperature : 30 40 degree Celcius.

b) Treated Sewage Quality

The treated sewage will conform to the following quality standards or as
desired as per relevant IS code depending upon type of usage standards:
BOD : < 10 mg/l
COD : < 50 mg/l
TSS : < 20 mg/l
pH : 5.5 9.0
Oil & Grease : Nil

c) Technical Equipment Specifications

Primary Treatment
Screens
Quantity : 2 Nos. or as required
Dimension : As per OEM
MOC : Stainless Steel
Type : Perforated
Screening Size : 20mm & 10mm
Lifting Arrangement : Yes

d) Pump Set
RAW SEWAGE TRANSFER PUMPSET (Collection Tank to Aeration Tank)
Quantity : 2 Nos. (1W + 1S) or as required
Type : Submersible, Vertical
MOC of Body / Impeller : CI / Bronze
Capacity : As Required
Head : As Required
Solid Handling Capacity : As Required
Motor Rating : As required fulfilling technical parameters
Lifting Arrangement : Manual MSEP

e) PLANT ROOM SUMP PUMPSET

Quantity : 2 Nos. (1W + 1S) or as required
Type : Submersible, Vertical
MOC of Body / Impeller : CI / Bronze
Capacity : As Required
Head : As Required
Solid Handling Capacity : As Required
Motor Rating : As required fulfilling technical
parameters

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Lifting Arrangement : Manual MSEP

f) SLUDGE TRANSFER / RECIRCULATION PUMPSET

Quantity : 2 Nos. (1W + 1S) or as required
Type : Monoblock. Centrifugal
MOC of Body / Impeller : CI / Bronze
Capacity : As Required
Head : As Required
Solid Handling Capacity : As Required
Motor Rating : As required fulfilling technical
parameters

Providing, installation, testing & commissioning of screw Sludge

disposal pump for the disposal of sludge to tanker or to sludge dry beds.
The pumps shall have CI casing, bronze Impeller & SS shaft & sleeve
with mechanical rotary shaft seal connected by a flexible tier type
coupling to TEFC induction motor mounted on a common channel base-
plate with coupling guard, 150 mm dia pressure gauge with GM
isolation cock, suitable vibration eliminator pads of approved design.
Motor to be suitable for including all necessary piping, valves and other
accessories and concrete foundation complete as required. (1 Working +
1 Stand-by or as required).

g) SLUDGE DISPOSAL PUMP PUMP SET

Quantity : 1 Set (1W+1S) or as required
Type : Screw, Horizontal
MOC of Body / Impeller : CI / Bronze
Drive : V Belt
Direction of Rotation : Clockwise
Capacity : As Required
Head : As Required
Solid Handling Capacity : Sludge - STP
Motor Rating : As required fulfilling technical
Parameters.

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h) FILTER FEED PUMP SET

Quantity : 2 Nos. (1W + 1S) or as required
Type : Monoblock. Centrifugal with Mech.
Seal
MOC of Body / Impeller : CI / Bronze
Capacity : As Required
Head : As Required
Solid Handling Capacity : As Required
Motor Rating : As required fulfilling
technical Parameters.

i) AIR DIFUSSION SYSTEM

a) Air Blower
Quantity : 2 Nos. (1W + 1S) or as
required
Type : Twin Type Rotary
MOC of Body : Cast Iron
Drive : V Belt
Direction of Rotation : Clockwise
Suction Silencer with Air Filter : Yes
Pressure Gauge / Relief Valve : 1 Each
Capacity : As Required
Discharge Pressure : As Required
Motor Rating : As required fulfilling
technical Parameters.

b) Air Diffuser
Type : Fine Bubble Tube Aerator Air
Transfer
Capacity : 3 5cfm or as required
Length of Diffuser : As per OEM
Dia. of Diffuser : 63mm or as required
Connection Size : 20mm or as required
MOC of Membrane : High Grade EPDM or as required
MOC of Pipe Support : SS / EPDM or as required
Fitting Material : PVC Shaddle.

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j) MEDIA FLUDISED MEDIA (For Aeration Tank)

Quantity : As Required or required
quantity as per capacity of
STP selected
Type : Random Bio Media
MOC of Media : Virgin PP with UV Stabilized
Specific Surface Area of Media : 160.0 SQM/ CUM or as
required
Protected Surface Area of Media : 102.4 SQM/ CUM or as
required
k) TUBE PAC MEDIA (For Tube Settler)
Quantity : 3 CUM or as required
Type : Hexagonal Chevron Shape Self
Supporting MOC of Media : Virgin PVC, UV Stabilized
l) TERTIARY TREATMENT (As per Requirements)
i) Dual Media Filter
Quantity : 1 No or as required
Capacity : As Required
Working Pressure : 3.0kg/cm2 or as required
Type : Down Flow
MOC of Vessel : MS IS 226 Duly Painted
Thickness of Shell / Dish : 8 / 10 mm or as required
Thickness of Dish Plate : 6mm or as required
Diameter : As per OEM
Height of Straight : As per OEM
Distribution System : Dish Plate with PVC Nozzles
Controls : Frontal Piping with Butterfly
Valves
Frontal Piping : MS Welded
Manhole / Handhold Cover : 1 Each
Air / Drain Valve : 1 Each
Pressure Gauge / Sampling Cock : 1 Each
Filter Media : River mesh sand supported
coarse sand and fine sand.
ii) Activated Carbon Filter
Quantity : 1 No. or as required
Capacity : As Required
Working Pressure : 3.0kg/cm2 or as required
Type : Down Flow
MOC of Vessel : MS IS 226 Duly Painted
Thickness of Shell / Dish : 8 / 10mm or as required

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Thickness of Dish Plate : 6 mm or as required

Diameter : As per OEM
Height of Straight : As per OEM
Distribution System : Dish Plate with PVC Nozzles
Controls : Frontal Piping with Butterfly
Valves
Frontal Piping : MS Welded
Manhole / Handhold Cover : 1 Each
Air / Drain Valve : 1 Each
Pressure Gauge / Sampling Cock : 1 Each
Filter Media : River mesh sand supported
coarse sand and Granular
Activated Carbon 1000 IV.

iii) ULTRA VIOLET UNIT (As per Requirements)

Quantity : 1 No. or as required Capacity as per
Requirements.
MOC Reactor : Stainless Steel 316L
MOC Quartz Jacket : High Purity Quartz (UVT >95%)
UV Dosage : 60mJ/cm2 (65% UVT)
Voltage : 220 240V / 50 60Hz
End Connection : As per OEM
Max. Operating Pressure : 80psig or as required
Max. Operating Temperature : 45 Degree C
Control Panel Rating : IP54
Control Panel MOC : Sheet Steel with Electrophoretic
Dipcoat Priming and Textured
Powder Coating.
Ballast Type : Electronic with Programmed Soft
Start
Lamp Replacement Reminder : Yes
Lamp Running Hour Counter : Yes
Lamp Failure Indication : Yes
UV Monitoring System : Yes

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iv)SLUDGE DEWATERING FILTER PRESS

Quantity : 1 No.
Type : Hydraulic
Type of Element : P.P. Recess
Type of Delivery : Slide & Open
Closing Device : Motorized
Drainage Surface : Pips
Plate Size : As per OEM
No of Recess Chamber : 18 Nos.
Operating Pressure : 3 5 Kg/Cm2
Max. Operating Temp. : 80 Deg. C
Filter Cloth : 1 Set

m) INSTRUMENTATION
i) Level Indicator & Controller
Quantity : 2 Set or as required
Dimension : As Required within CCT & FWT
Type : Electronic High / Low level
Alarm : Yes Auxiliary NO/NC

ii) Air Flow Meter

Quantity : 2 Nos.
Type : Vertical Rota meter
MOC of Body : High Grade Acrylic
Capacity : 20M3/Hr.
Operating Temperature : Ambient
Operating Pressure : 6 PSI
MOC of Float : SS 316

iii)WATER FLOW METER

Quantity : 1 No. or as required
Type : Electromagnetic
Capacity : 15M3/Hr. or as required
Operating Temperature : Ambient
Operating Pressure : 6 PSI or as required
Connection Size : 50mm or as required
MOC of Connection : SS

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iv) pH METER
Quantity : 1 No. or as required
Type : Flow Through / Tank (Optional)
Sensor O/P : Milli Volt
Application / Fluid : Treated Sewage
Range : 00.00 14.00 Ph

v)ENERGY METER
Quantity : 1 No. or as required
Type : Electronic
Range : 10 40 Amps.

n) INTERCONNECTING PIPE & FITTINGS

PIPING
Submerged Air Pipe Line : SS 304
Diffuser Line : Flexible
Air Line : MS Epoxy Painted
Effluent & Submerged Water Pipe L ine : PVC Heavy Class
Water Line : MS Duly Painted
Pipe Class : Medium Class
MOC of Fittings : As Required

o) ELECTRICAL WORK
Electrical Control Panel
Quantity : 1 Set or as required
Fabrication Material : 14Gauge CRCA Sheet Steel duly
Anticorrosive Paint & Powder Coated
Gland Plate : Top & Bottom
Description : As required
Electrical Accessories : ISI Approved

p) CABLE & CONDUITING

Quantity : 1 Lot within Plant Room
Type : Flexible Triple Layer ISI Marked

A.E. (Admin) EE & SM-II (C)

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