Combined process of sequencing batch reactor activated sludge process and constructed wetland for domestic wastewater treatment

作     者：魏武强 Wisaam S. Al-Rekabi 

作者机构：Environment Engineering Research and Design Department China Railway Siyuan Survey and Design Group Co. Ltd Key Laboratory of Eco-environments in Three Gorges Reservoir Region Ministry of Education Civil Engineering Department College of Engineering Basra University 

出 版 物：《Journal of Chongqing University》 (重庆大学学报（英文版）)

年 卷 期：2010年第9卷第4期

页      面：201-207页

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：Funded by Sustainable Water Management Improves Tomorrow’s City’s Health (SWITCH018530) 

主　　题：sequencing batch reactor activated sludge process constructed wetland energy consumption low dissolved oxygen 

摘      要：By combining sequencing batch reactor (SBR) activated sludge process and constructed wetland (CW), this study is to achieve the domestic wastewater treatment. Our purpose was to determine the optimum operating parameters of the combined process. The process involved advantages and shortages of SBR and CW. Under normal temperature, the 3rd cycle (SBR’s operation cycle is 8 h: inflow for 1 h, limited aeration for 3 h, sediment for 1 h, outflow for 1 h, and idling for 2 h; CW’s hydraulic retention time (HRT) is 24.8 h and hydraulic loading is 24.5 m3/m2 d) was the best cyclic mode. The effluents can meet the standard GB/T18921-2002: The reuse of urban recycling water: water quality standard for scenic environment use. In the 3rd cycle, the efficiency of CW was the maximum, and energy consumption of SBR was the minimum. Under the condition of low dissolved oxygen, the removing efficiency of chemical oxygen demand (COD) and ammonia was not affected obviously. Simultaneously, nitrification and denitrification phenomena occured and phosphorus was absorbed obviously.