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《Environmental Science & Technology》 2010-01
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Purification of Countryside Wastewater in Eisenia foetida Constructed Wetland

LI Xian-ning1,JIN Qiu2,JIANG Wei3,XIE Xiang-feng1,LIAN Xiao-ying1(1.Department of Environmental Engineering,Southeast University,Nanjing 210096,China;2.Nanjing Hydraulic Research Institute,Nanjing 210029,China;3.Nanjing Research Institute of Environmental Protection,Nanjing 210013,China)  
Based on the ecology theory,the improved wetland ecosystem was studied,with addition of Eisenia foetida to the food chain and strengthening of link of aquatic animals.It concluded that Eisenia foetida can improve the condition of DO in wetland.Under hydraulic load of 0.3m3(/m2·d),average effluent concentration of COD,TN and TP were 41.02mg/L,12.58mg/L and 0.44mg/L respectively,with the effluent water quality satisfactory to discharge standard for urban wastewater treatment plant of Grade I of GB18918-2002.
【Fund】: 江苏省自然科学基金(BK2008322);; 江苏省环保厅项目(2005012);; 教育部留学回国人员科研启动基金(2005546);; “十一五”国家科技支撑计划(2006BAB05B04)
【CateGory Index】: X703
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