水蕹菜对苏州重污染水体净化功能的研究  

Purification of heavily polluted water bodies in Suzhou by Ipomoea aqutica

作　　者：李欲如[1] 操家顺[1] 徐峰[1] 周金余[1] 

机构地区：[1]河海大学环境科学与工程学院,江苏南京210098

出　　处：《环境污染与防治》2006年第1期69-71,共3页Environmental Pollution & Control

基　　金：国家高技术研究发展计划(863计划)"苏州市水环境质量改善与综合示范项目"资助项目(No.2003AA601070)。

摘　　要：采用浮床无土栽培技术,在苏州重污染河道上种植水蕹菜以控制重污染水体水质。不仅进行了静态试验,而且在重污染河道苗家河上作了示范应用,效果显著。静态试验结果表明,在气温35℃、水温30℃以上的条件下,水蕹菜对苏州重污染水体中的CODMn、TN、NH+4N、TP等的去除率分别为37.0%、92.9%、93.9%、94.3%;苗家河示范工程水域中水质有明显改善,透明度达90～130cm。由此证明水蕹菜是对苏州重污染河道净化处理的优良生物材料之一。The control of heavily polluted river in Suzhou was tested by Ipomoea aqutiea on soilless floating beds, through static state test and in situ test on a heavily polluted river, Miaojia River. The role of this type of plant is remarkable. The results of static state test showed that pollutant removals from heavily polluted water using Ipomoea aqutica such as CODMn, TN, NH4^＋-N, TP were 37.0%, 92.9% ,93.9% ,94.3%, respectively, at air tempera ture of above 35 ℃ and water temperature above 30℃. The water quality of demonstration project carried out in situ on Miaojia River was improved obviously, with a transparency reaching 90 to 130 cm, demonstrating that Ipomoea aqutiea is one of excellent biomaterials on the heavily polluted rivers.

关 键 词：水蕹菜 浮床 重污染水体净化 示范工程 

分 类 号：X522[环境科学与工程—环境工程]