TANDA STAGE-II

SALIENT TECHNICAL FEATURES

BRIEF SCOPE OF WORK

A) PRE-TREATMENT PLANT

The proposed Pre-treatment plant consists of PT-CW system. The PT-CW system consisting of 3 numbers of clarifiers each of capacity 1750 cum/hr shall supply clarified water as CW make-up as well as for potable water requirement of colony and plant. The clarified water from the clarified water tank at the outlet of clarifiers to CW channel shall flow by gravity. The PT-Potable water system consisting of two numbers gravity filters each of capacity 100 cum/hr shall supply filtered water to colony and plant. The gravity filters along with potable water pumps and blowers shall be installed in the Filter House. One number clarified water tank will be provided for ventilation system make up, Two nos. ventilation system make-up pumps , two numbers service water pump, two numbers Air pre heater wash pumps shall be installed in the service/treated water pump house.

The chemical preparation tanks and dosing system shall be installed in the Ist floor of the two storied chemical house. The alum and lime will be stored in the ground floor of the chemical house. The chemical house is common for PT and Effluent treatment system. One number overhead filtered water storage tank shall be provided at the top of chemical house.

The clarifier sludge disposal and filter backwash waste disposal system consisting of collection pit, disposal pumps, associated piping, valves and instrumentation as required have been included in this package.

Raw water shall be fed to the PT plant by raw water pump house (Not in bidder’s scope of work).

All interconnected piping, valves, electrical equipment, control & instrumentation are also included in this package.

B) CHLORINATION PLANT

The proposed Chlorination plant for CW system consists of 3 x 120 kg/hr and for PT plant consists of 2 x 20 kg/hr chlorinators along with evaporators, injectors , diffuser & mixing system, booster pumps, interconnecting piping and valves etc as the case may be.

A common chlorine leak absorption system consisting of absorption tower, recirculation chemical pumps, blowers, interconnecting duct, valves, piping etc for CW & PT chlorination is envisaged.

C) EFFLUENT TREATMENT PLANT

The proposed effluent treatment plant consists of the followings

i) The waste service water treatment system consists of two numbers lamella clarifiers/ tube settlers of capacity 200 cum/hr (each) , along with flocculation chamber, waste service water collection sump & transfer pumps, interconnecting piping & valves and instruments etc.

ii) Coal handling plant run-off water treatment system consisting of two numbers coal slurry settling ponds, coagulant dosing system and one no coal decanted water sump and transfer pumps, interconnecting piping & valves and instruments etc.

iii) One Central Monitoring Basin & effluent monitoring station and three numbers transfer pumps , interconnecting piping , valves and instrumentations etc.