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Why use Sand Filter and Active Carbon Filter for ETP?

   Sand Filter : 1.         It is made by steel. Facilitated with back wash system. 2.         From the intermediate tank it is passed through this unit by centrifugal             pumps. 3.         It removes the suspended particles remaining from sedimentation tank. 4.         Back wash must be once per day to get the efficiency. Key Process Parameters : TSS, COD and BOD5 at 20C   Active Carbon Filter : 1.         It is made by steel. Facilitated with back wash system. 2.         From the intermediate tank it is passed through this unit by centrifugal             pumps. 3.      ...