Process Operation of Effluent Treatment Plant

Process Operation of Effluent Treatment Plant:

The treatment concept is PhysioChemical with Filtration System.

Effluent from the sweater washing floor flows by gravity through the drain pipe line and after passing through screener it gravitates to the collection pit from where it is passed to the equalization tank. Untreated homogenized effluent is pumped from equalization tank to the Primary Clarifier. Coagulant flocculants solutions are dosed to on line which is synchronized with effluent pumps. The solid is being separated from clarifier unit. The upper clear water is collected to the intermediate PVC tank of capacity 5000L (Feed forwarding tank for tertiary Treatment) tank and the solid from bottom is transferred to the sludge Thickening Tank. The suparnent (Upper flow) is recycled to the equalization tank and the bottom thicker sludge is transferred to the sludge drying beds by gravity. The treated water from intermediate tank is passed through the multi-grade sand filter. Finally it is collected to the treated reservoir as to reuse or discharge to the environment. The influent pH range is 6-9 so neutralizer is not required.

Sludge Handling:

The bottom thicker layer of sludge is being transferred to sludge drying bed after three hours interval. There are two sludge drying bed in the plant. When one of the bed is filled by sludge it is kept for drying and another is in operation. By this way the upper solid semi dried sludge is bagged to keep in the campus for six months. After six months it is dumped to the safe place.

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How to Calculate Heat Rate of Generator Engine?

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Packing, Seals and Gaskets

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Why a dc generator fails to build up voltage?

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what is the difference between long shunt and short shunt dc generator?

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Therbligs and Basic 17 motion name of therblig

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Various Methods of Drawing Flow Nets

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Which type of Battery connection Series or Parallel Connection is used for Diesel Generator?

Diesel Generator Battery Connection Batteries can emit explosive gases. To reduce the possibility of personal injury, always ventilate the compartment before servicing the batteries. To remove the possibility of arching, remove the negative battery cable is first and attach the negative battery last. When using jumper cables to start the engine make sure to connect the cables in parallel Positive to positive and negative to negative. When using external electrical source to start the engine, turn the disconnect switch to the OFF position. Remove the key before attaching the jumper cables. To avoid damage to engine parts do not connect jumper starting or battery charging cable to any fuel system or electronic component. Battery Parallel Connection: The accompanying illustration shows a typical parallel battery connection. This arrangement doubles the cranking amperage. Battery Series Connection: This illustration shows a typical

what is PIV drive? Why is PIV drive more effective than any other system of drive?

PIV Drive: A stepless drive where the transmission of torque takes place infinitly variable without slip is called PIV drive. There are some advantages of PIV drive: there is no slip in the transmission of power. Maximum transmission of power. Speed can be changed at running condition Any range of slip can be obtain It give constant cutting speed for the above reason PIV drive is more effective than any other system of drive

What are the main components of Automobile?

There have five basic parts for Automobile and they are given bellow: 1. Engine: Engine which is known to all as a power plant. Engine is the source of power which makes the car wheels rotate and the car move where it supply power to lubricating, fuel, electric and cooling systems. 2. Frame: Frame support the engine, body and wheels. 3. Power train: Power train transmit the power engine to the car wheels where its contain clutch, transmission, propeller shaft, axles and differential. 4. Car Body 5. Car body accessories: A car body accessory contains the heater, lights, radio, windshield wiper and convertible top raiser.

“Equalizer connection is needed in lap winding armature but not in wave winding “ why ?

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