浮萍放养体系对污水氮磷的净化效果  

Removal of Nitrogen and Phosphorus by Duckweed-Cultured System

作　　者：黄辉[1] 刘杰[1] 赵浩[1] 饶群[1] 徐炎华[1] 

机构地区：[1]南京工业大学城市建设与安全环境学院,江苏南京210009

出　　处：《农业环境科学学报》2007年第B03期242-245,共4页Journal of Agro-Environment Science

基　　金：江苏高校高新技术产业发展项目(JHB05-18);江苏省国际科技合作计划项目(BZ2006055)

摘　　要：以经筛选得到的本地优势浮萍和水花生为供试材料,以生活污水和经稀释的牛场厌氧废水为供试污水,在实验室条件下考察了浮萍单种体系和浮萍-水花生混养体系对污水氮、磷的净化效果。结果表明,浮萍单种体系、浮萍-水花生混养体系对供试污水TN、TP的最大去除率分别为95.24%、91.13%和86.42%、86.43%。在低有机污染条件下,浮萍单种体系对污水氮、磷的净化效果优于浮萍-水花生混养体系;当水体有机污染程度较高时,浮萍单种体系对氮、磷的去除率明显下降,而混养体系依然能对污水氮、磷进行高效去除。Removal of nitrogen and phosphorus from municipal wastewater and diluted anaerobically pretreated wastewater from a cattle farm by a single species of duckweed system and accrete system based on locally preponderant duckweed after selection and alternanthera philoxeroides were investigated. Results showed that the maximal removal rates of total nitrogen （TN）, total phosphorus （TP） by the single species of duckweed system and the accrete system are 95.24%, 91. 13% and 86.42%, 86.43%, respectively. The single species of duckweed system performed better on the removal of nitrogen and phosphorus at low organic pollution, but there was an obvious drop on the removal efficiency at high organic pollution, while the accrete system still had a high removal efficiency of nitrogen and phosphorus at the same condition.

关 键 词：浮萍 放养体系 氮 磷 

分 类 号：X703.1[环境科学与工程—环境工程]