摘要
南方早稻期间降雨多,农田排水多、面源污染严重。为了研究生态修复技术对南方早稻期间农田排水中氮磷污染物的净化效果,本试验在广西桂林青狮潭灌区农田灌溉区域中,地势低洼处建立表面流人工湿地对农田排水进行处理。2009～2010年,早稻期间定时检测农田排水中氮磷污染物的变化情况及表面流人工湿地对氮磷污染物的去除效果,结果表明:2009～2010早稻期间,表面流人工湿地对总氮去除率分别为43.11%、48.95%;总磷的去除率分别为54.23%、43.28%,去除效果较好。
More rainfall during the Southern early rice leads to more farmland drainage and more agricultural non-point source pollution.The trial established surface flowing constructed wetlands at low-lying area of Guilin Guangxi Qingshitan irrigation to process agricultural drainage and study the purification of the ecological restoration to nitrogen and phosphorus of rice field drainage during the southern early rice.Regularly tested the changes of nitrogen and phosphorus form rice field drainage and analysis the removal efficiency of surface flowing constructed wetlands during 2009 and 2010 early rice.The results showed that： during 2009 and 2010 early rice,the removal efficiency of the surface flowing constructed wetlands for total nitrogen removal rates was 43.11%,48.95% and total phosphorus was 54.23%,43.28%.The removal was effective.
出处
《水利科技与经济》
2011年第1期15-17,26,共4页
Water Conservancy Science and Technology and Economy
基金
广西研究生教育创新计划项目(2009105960815M25)
广西科学基金项目(桂科基0991026)
广西环境工程与保护评价重点实验室研究基金资助项目(桂科能0701K019)
关键词
表面流人工湿地
总氮
总磷
农田排水
去除效果
surface flowing constructed wetlands
nitrogen
phosphorus
farmland drainage
removal
