8/3/2019 Cyclic Activated Sludge Technology

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CYCLIC ACTIVATED SLUDGE TECHNOLGY

Ms. Aparna Kapoor, Ion Exchange (I) Ltd

1. ABSTRACT

Cyclic activated sludge process has gained increasing importance in wastewater treatment, especially onaccount of the design flexibility to handle varying daily flow and load fluctuations along with operationsimplicity. The practice of manipulating activated sludge reaction environments to obtain maximum nitrogen

and biological phosporus removal has been optimized using cyclic activated sludge technology. In its simplestform, the sequences of fill, aeration, settle and decant are consecutively and continuously operated in acompartment reactor. Low Nitrogen concentrations < 5 gm/lit by co-current nitriflcation denitrification

mechanism and phosphorus < 5 gm/lit by co-current nitrification denitrification mechanism and phosphorus