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Effluent Treatment Plant

Water is basic necessity of life used for many purposes one of which is industrial use. Industries generally take water from rivers or lakes but they have to pay heavy taxes for that. So its necessary for them to recycle that to reduce cost and also conserve it. Considering these criteria an Effluent Treatment Plant is also being established. Main function of this ETP is to clean GCP effluent and recycle it for further use.


  • GENERAL STRUCTURE OF CLARIFIER SLUDGE TANK: In sludge tank sludge is continuously agitated in order to prevent settlement of sludge. Each tank has capacity of 224m3 and can hold for 8 hrs. Main purpose of the tank is to hold sludge for transfer to filter press. From sludge tank the sludge is pumped to filter press by filter press feed pump.
  • FILTER PRESS: Sludge from the sludge tank will be pumped to the Filter Press equipment for de watering purpose. According to performance guarantee the cake moisture should not be more than 20%. For this purpose different types of filters are used namely- gravity setters, gravity belt filters, centrifuges, vacuum or pressure belt filters and filter press. But among these filter press is most efficient and economical. Other filtration systems offer high pressure filtration, but only the filter press has both high pressure capability and efficient filter cake removal. The filter elements are constructed of lightweight polypropylene. They are extremely corrosion resistant and virtually eliminate plate breakage.


  • Dewatering is accomplished by pumping a slurry or sludge into chambers surrounded by filter membranes. As pumping pressure is increased the filtrate is forced through the accumulated filter cake and membrane until the chamber is full of solid filter cake. The chambers are formed by two recessed plates held together under hydraulic pressure. The hydraulic ram moves the follower against the stack of filter plates closing the press. The ram continues to apply sealing pressure of sufficient force to counteract the high internal compaction pressures.
  • The head stock and tail stock are held in place by specially engineered side rail support bars. The filtrate passes through the membrane and is directed by channels in the plates and drain ports to the head stock for discharge. The filtrate typically contains less than 15 PPM suspended solids. The filter cake is easily removed by simply reversing the hydraulic ram, thus opening the press. The lightweight plates may then be moved apart, permitting the compacted cake to fall from the chambers. Higher the internal pressure, the greater the solids compaction. The standard press is constructed to withstand 100 PSI compaction pressure producing a hard dry cake. The special high pressure press can withstand 225 PSI for sludge more difficult to dewater.