复合生态床的植物配置与净化效能研究  

Arrangement and Purification Efficiency of Plants in Compound Ecological Bed

作　　者：张媛[1] 张驰[1] 郭旋[1] 刘淼[1] 林洁[1] 

机构地区：[1]重庆大学城市建设与环境工程学院,重庆400045

出　　处：《中国给水排水》2010年第5期96-99,103,共5页China Water & Wastewater

基　　金：国家大学生创新计划项目(QUCX-2007-27);高等学校给水排水工程专业指导委员会大学生优秀科技创新项目

摘　　要：复合生态床是由填料和植物按一定需要组合而成的梯级人工湿地系统,是一种新型的生活污水生态处理工艺。结合山地城镇的地形特点构建了三级人工湿地生态床,并开展了处理生活污水的中试(13.5 m3/d)研究。选择美人蕉、风车草、菖蒲、香蒲四种土著植物以及陶粒、钢渣、石灰石等3种填料,通过进行不同的组合,考察其对除污效果的影响。结果表明:美人蕉的生物量最大,对氮、磷的去除能力较强;最优植物组合为风车草—美人蕉—菖蒲,其对NH3-N、TN和TP的去除率分别为69.85%、59.31%和75.04%。The compound ecological bed is a multi-step constructed wetlands system made of plants and substrates to ecologically treat domestic sewage. A three-stage cascade constructed wetland （TSCCW） was built based on the terrain characteristics of mountainous town, and a pilot-scale test with capacity of 13.5 m^3/d was carried out. The effect of different combinations among indigenous plants and substrates on pollutant removal efficiency was investigated. The indigenous plants are Cannaceae, Cyperus ahernifolius, S. calamus and Typha angustata, and the substrates are ceramsite, steel slag and limestone. Cannaceae is found to have the highest assimilation capacity and the best removal efficiency of nitrogen and phosphorus. The optimal combination of plants in TSCCW is Cyperus alternifolius/Cannaceae/S, calamus, and the removal rates of NH3 -N, TN and TP are 69.85%, 59.31% and 75.04% respectively.

关 键 词：复合生态床 人工湿地 生活污水 水生植物 

分 类 号：X703[环境科学与工程—环境工程]