4种湿地植物对人工湿地净化生活污水的影响比较  

Comparison of treatment performances of simulated urban sewage in constructed wetlands planted with four types of wetland plant

作　　者：刘文杰[1,2] 许兴原 何欢[1,2] 祝栋林[3] 胥瑞晨 孙成[1,2] LIU Wenjie XU Xingyuan HE Huan ＊ZHU Donglin XU Ruichen SUN Cheng(State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China Jiangsu Engineering Research Center for Rural Environmental Protection and Ecological Remediation, Nanjing 210023, China Jiangsu Engineering consulting Center, Nanjing 210003, China)

机构地区：[1]污染控制与资源化研究国家重点实验室、南京大学环境学院,南京210023 [2]江苏省农村环境保护与生态修复工程中心,南京210023 [3]江苏省工程咨询中心,南京210003

出　　处：《环境工程学报》2016年第11期6313-6319,共7页Chinese Journal of Environmental Engineering

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07204-001)

摘　　要：不同类型人工湿地对生活污水的处理效果,受到许多因素的影响,其中不同植物类型的选择,可能会造成人工湿地对主要污染物COD、TN和TP的净化效果发生很大差异。研究了4种湿地植物(菖蒲、香蒲、千屈菜和水葱)在水平潜流、垂直上行流和下行流人工湿地中对人工合成的生活污水的处理效果和主要污染物(COD、TN和TP)去除率的季节变化,通过比较不同植物类型在不同湿地类型中对主要污染物的去除效果分析了可以达到最佳污水净化效果的启动条件。结果表明:香蒲在垂直下行流湿地去除有机污染物效果最好,去除率可达85.55%;水葱在垂直上行流湿地去除TN效果最好,去除率可达57.52%,香蒲在垂直上行流湿地去除TP效果最好,去除率可达84.28%。The treatment performances of simulated urban sewage in constructed wetlands are affected by many factors,and different types of wetland plants may cause vastly different purification performance. We studied the treatment performances of simulated urban sewage in horizontal subsurface constructed wetlands,upflow vertical constructed wetlands,and downflow vertical constructed wetlands with four different wetlands plants（ Acorus calamus,Typha orientalis,Lythrum salicaria,and Scirpus validus）,and the seasonal variation in removal efficiency of COD,TN,and TP was determined. Through a comparison of the treatment performances of the simulated urban sewage in the constructed wetlands planted with four types of wetlands plants,we analyzed the optimal start conditions that achieved the best purification performance. The vertical upflow wetlands planted with Scirpus validus achieved the highest removal efficiency of COD with a mean value of 85. 55%; vertical downflow wetlands planted with Scirpus validus achieved the highest TN removal efficiency with a mean value of 57. 52%;and vertical upflow constructed wetlands planted with Typha orientalis achieved the highest TP removal efficiency with a mean value of 84. 28%.

关 键 词：水平潜流 垂直上行流 垂直下行流 植物筛选 季节变化 

分 类 号：X522[环境科学与工程—环境工程]