复合流人工湿地对富营养化河水的脱氮效能研究  

Nitrogen Removal Efficiency of Combined Substrate and Integrated Flow Constructed Wetland for Treating Eutrophic River Water

作　　者：薛龙[1] 李建华[1] 邹丽敏[1,2] 蔡雯娟[1] 

机构地区：[1]同济大学环境科学与工程学院长江水环境教育部重点实验室,上海200092 [2]上海市青浦区给水排水管理所,上海201700

出　　处：《中国给水排水》2012年第7期71-75,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07101-006-07);上海市科委重大项目(09dz1205100);中日国际合作项目

摘　　要：采用组合基质复合流人工湿地处理富营养化河水,重点分析了其脱氮效能。结果表明:人工湿地系统对富营养化河水具有较好的处理效果,出水水质基本可达到《地表水环境质量标准》(GB 3838—2002)的Ⅲ类标准,对TN、NH4+-N、NO3--N、COD、TP的去除率分别为50.00%、63.07%、55.30%、53.83%、77.27%。人工湿地系统的脱氮量主要来源于对无机氮的削减;影响脱氮效果的因素主要有HRT、温度、TN面积负荷以及进水硝态氮比例,通过对以上影响因子拟合形成的TN去除率预测模型,预测准确度较高,可用于指导实际工程的设计与调试运行。Combined substrate and integrated flow constructed wetland was used for treating eutrophic river water. The nitrogen removal efficiency of the constructed wetland was investigated. The results showed that the constructed wetland could effectively treat eutrophic river water, the effluent quality met m criteria specified in the Environmental Quality Standards for Suoface Water （GB 3838 -2002 ）. The removal rates of TN, NH4^＋ - N, NO3^- - N, COD and TP were 50.00% , 63.07% , 55.30% ,53.83% and 77.27% respectively. The nitrogen removal of the constructed wetlands system mainly came from the removal of inorganic nitrogen. The impact factors of nitrogen removal efficiency were HRT, temperature, TN area loading rate and NO3 - N proportion in the influent. A prediction model of TN removal rate was developed by fitting the impact factors, and the prediction results were exact. The model can guide the design and operation management of the constructed wetland system.

关 键 词：复合流人工湿地 组合基质 富营养化河水 脱氮 

分 类 号：X52[环境科学与工程—环境工程]