A Study Of The Influence Of Water Treatment Plant Sludge On Waste Water Treatment

Abstract

ABSTRACT newlineAlum is used as a coagulant in a Water Treatment Plant (WTP) and lime is used to balance the pH value. In this process a large volume of sludge is generated. The characteristics of the generated sludge depend strongly on the water source and the quality and quantity of the chemicals used for the treatment process. disposal of this sludge is a major challenge faced by WTPs around the world. In this thesis an attempt has been made to study the feasibility of WTP sludge to treat the municipal waste water in the preliminary stage before going for biological treatment. The scope fo the study are (1) The quantity of BOD, COD, total supended solids in the treated water will be studied (2) The reactiveness of WTP sludge with the waste water will be studied by varying the speed of flocculator paddles and pH conditions.. The WTP sludge will be applied with municipal sewage to a series of jar tests conducted under various operating conditions and various pH conditions. It is observed that the BOD, COD, TSS values of the sewage are considerably reduced while adding the WTP sludge and the removal efficiency is mainly depending upon the dosage of the WTP sludge, optimum pH condition and operating speed of the paddle. The operation system for the removal of particulate matter has been optimized using RSM based modeling. newline