Title: Treatment of biological waste water using activated sludge process

Authors: Swapnil A. Dharaskar

Addresses: Department of Chemical Engineering, Priyadarshini Institute of Engineering and Technology, Higna Road, Nagpur (M.S) 440019, India

Abstract: A study was conducted to evaluate the feasibility of activated sludge process for the treatment of synthetic wastewater and to develop a simple design criteria under local conditions. A bench scale model comprising of an aeration tank and final clarifier was used for this purpose. The model was operated continuously for 210 days. Settled synthetic wastewater was used as influent to the aeration tank. Chemical oxygen demand of the influent and effluent were measured to find process efficiency at various mixed liquor volatile suspended solids and hydraulic detention time. The results of the study demonstrated that an efficiency of above 90% for COD could be obtained if the ASP is operated at an MLVSS concentration of 3,000 mg/L keeping an aeration time of 1 h. The results of this work might offer significant insights in the perceptive use of activated sludge process for the treatment of municipal and industrial waste water.

Keywords: activated sludge; synthetic wastewater; COD; chemical oxygen demand; MLVSS; wastewater treatment; biological wastewater.

DOI: 10.1504/IJEE.2015.069812

International Journal of Environmental Engineering, 2015 Vol.7 No.2, pp.101 - 110

Available online: 12 Jun 2015 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article