香蒲、灯心草人工湿地的研究──Ⅲ.净化污水的机理  

Studies on Artificial Wetland with Cattail (Typha angustifolia ), Rush(Juncus effusus),Ⅲ: Mechanisms of Purifying Wastewater

作　　者：成水平[1] 夏宜琤[1] 

机构地区：[1]中国科学院水生生物研究所,武汉430072

出　　处：《湖泊科学》1998年第2期66-71,共6页Journal of Lake Sciences

摘　　要：通过香蒲Typhaangustifolia和灯心草Juncuseffusus人工湿地微生物分布状况的调查，水生植物生长状况的观察，研究了介质、水生植物和微生物三者净化污水的作者，探讨了人工湿地对污水中污染物质的去除机制．研究表明，人工湿地对污水的氮、磷和化学耗氧量的去除作用是介质、水生植物和微生物综合作用的结果，粘性土壤和花岗石介质更利于污水中磷的去除．By investigating the distributions of microorganisms and growth of macrophytes, the role of medium, macrophyte and microorganism in wastewater by artificial wetland has been studied and the mechanisms of N, P and CODCr elimination have been discussed.From studies on the artificial wetland with cattail (Typha angustifolia ) and rush (Juncus effusus), it had a trend that reproductions of microorganisms in spring and summer were larger than those in autumn and winter. The removal rates of KN. NH-N were significantly related to the number of bacteria, protozoa and algae in control (P＜0. 05 ).The contaminates removal capacities of artificial wetlands were also related to the growths of macrophytes. Parts of nitrogen, phosphorous were fixed by exchanging. complexing.precipitating and adsorbing in media.The results indicate that the collaboration of medium, macrophyte and microorganism is the mechanism of purifying wastewater in artificial wetland. Medium with granite and viscous soil is better for removing phosphorous.

关 键 词：人工湿地 污水处理 水生植物 香蒲 灯心草 

分 类 号：X703[环境科学与工程—环境工程] Q948.15[生物学—植物学]