It is important to note and remember that the sedimentation tank is an integral part of the activated – sludge process. The design of the reactor cannot be considered independently of the design of the associated settling facilities. To meet discharge requirements for suspended solids and BOD associated with the volatile suspended solids in the …

The solids that result from wastewater treatment may contain concentrated levels of contaminants that were originally contained in the wastewater. A great deal of concern must be directed to the proper disposal of these solids to protect environmental considerations. Failure to do this may result in a mere shifting of the original pollutants in the …

African Journal of Biotechnology Jin Wang, Zhenjia Zhang, Zhifeng Zhang, Ping Zheng and Chunjie Li 1- College of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China. 2- Shaoxing Wastewater Treatment Development Co., Ltd., Shaoxing 312074, China. 3- Department of Environmental Engineering, Zhejiang University, Hangzhou 310029, China.   Two pilot-scale activated sludge systems …

Everyone is against water pollution… but how does it happen, and how can it be prevented? Water is Essential for Life. It covers 71% of the earth’s surface and makes up 65 % of our bodies. Everyone wants clean water– to drink, for recreation, and just to enjoy looking at. If water becomes polluted, its …