Evaluation　on　the　performance　of　triple　oxidation　ditch　system　treating　municipal　wastewater

作     者：Zhou Lu, Qian Yi National Key Joint Laboratory on Environmental Simulation and Water Pollution Control, Department of Environmental Engineering,Tsinghua University, Beijing 100084, China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：1997年第9卷第3期

页      面：4-11页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

主　　题：oxidation ditch nitrification denitrificaiton wastewater ecological WWTP. 

摘      要：The oxidation ditch system in Handan WWTP is the biggest triple oxidation ditch system (T O.D.) treating municipal wastewater in China with a service population of 350000. The system can perform three functions, aerobic, anoxic and precipitation process in different ditch by alternating the operation mode, and the simultaneous removal of nitrogen and organic substances can be attained. Statistic analysis of data from past five year operation in the WWTP was presented, and investigations on COD, nitrogen, phosphorus removal in system were carried out in the field. The optimum number of aerated brush to meet satisfied nitrification and denitrification was determined on basis of field experiment. The effluent is reused as cooling water for a electricity power plant, and excess sludge is utilized as fertilizer. The concept of an ecological WWTP is put forward by the example of Handan WWTP.