Nitrogen removal for low-carbon wastewater in reversed A^2/O process by regulation technology

作     者：张智 陈杰云 谢丽华 范功端 尹晓静 李勇 

作者机构：Key Laboratory of Three Gorges Reservior Region's Eco-EnviromentMinistry of EducationChongqing University College of Architecture and EnvironmentSichuan University Jiguanshi Waste Water Treatment PlantChongqing Drainage Limited Company 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2009年第16卷第S1期

页      面：304-308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] 

基　　金：Project (2009ZX07315-002-01) supported by Water Pollution Control and Management of Major Special Science and Technology 

主　　题：reversed A2/O process low-carbon resource landfill leachate primary sedimentation tank nitrogen removal 

摘      要：Full scale experimental study on nitrogen removal for low-carbon wastewater was conducted in reversed A2/O process in Jiguanshi waste water treatment plant in Chongqing,in order to aid the operation and maintenance of similar WWTP. When the proposed measures,such as using 0.1% (volume fraction of wastewater) landfill leachate,shortening HRT by 2/3 in the primary sedimentation tank and controlling DO at 0.5 mg/L in the 3rd section of aerobic zone,are applied,15% of the carbon source can be complemented,the favorable property of activated sludge is achieved,and the nitrogen removal effect is significantly improved. The effluent NH3-N is 2 mg/L and the removal rate is 90%. The effluent TN is 17 mg/L and the removal rate is 54%. The up-to-standard discharge of the effluent is achieved. And after the optimization,the unit electricity consumption also reaches 0.21 kW/h and saves 20%.