水力负荷及季节变化对人工湿地处理效率的影响  

Effect of hydraulic loading and seasonal fluctuation on pollution removal of constructed wetlands

作　　者：聂志丹[1] 年跃刚[1] 李林锋[2] 谢爱军[3] 周炜[3] 

机构地区：[1]中国环境科学研究院湖泊生态环境创新基地,北京100012 [2]湛江海洋大学农学院,湛江52408 [3]华东师范大学环境科学系,上海200062

出　　处：《给水排水》2006年第11期28-31,共4页Water & Wastewater Engineering

基　　金：国家高技术研究发展计划(836)项目(2002AA601013)。

摘　　要：研究了水力负荷及季节变化对人工湿地强化净化五里湖湖水处理效率的影响因素，试验时间从2004年8月3日-2006年1月15日。研究表明，随水力负荷的增加，垂直流、潜流和自由表面流人工湿地的处理效率均呈下降趋势，尤以自由表面流人工湿地变化最为明显。对于五里湖水体，适宜的进水负荷为0．8m^3／（m^2·d）左右，此时垂直流、潜流人工湿地的TN和TP的去除效率均在50％以上。各人工湿地随季节的变化去除效率排序为夏季〉秋季〉春季〉冬季。TP的去除率随李节变化相对比较平稳，TN次之，NH3-N、CODMa变化较大，冬季去除率下降尤为明显。This article discussed the effects of hydraulic loading rate（HLR）and seasonal fluctuantion on pollution removal capacity of constructed wetlands treating the Wulihu Lake water. The experimental research was conducted from August 3, 2004 to January 15, 2006. The research results indicated that the removal efficiencies of the vertical flow wetland（VFW）or subsurface flow wetland（SFW） and free surface wetland（FSW）decreased along with the increase of the HLR, especially for the FSW,which is very obvious. The removal efficiencies of TN and TP of the constructed wetlands were above 50% for both VFW and SFW with HLR at 0. 8 m^3/（m^2 · h）, which is the best option. The removal efficiencies of the constructed wetlands decreased in sequences of summer 〉autumn〉spring〉winter. The FSW decreased mostly, next was SFW, VFW decreased slightly. The TP removal rate along with seasonal variation was relafively steady, TN was next, NH3-N and CODMn changed mostly. All of the removal rates were lowest in winter.

关 键 词：人工湿地垂直流潜流 自由表面流 富营养化水体 水力负荷 季节变化 

分 类 号：X703[环境科学与工程—环境工程]