生态沟渠对丘陵地区农村面源污染净化效果研究  

Study on Purification Effect of Ecological Ditch on Rural Non-point Source Pollution in Hilly Region

作　　者：杨尚虎 龚屹鹏 杨龙 兰书焕 罗明华[3] YANG Shanghu;GONG Yipeng;YANG Long;LAN Shuhuan;LUO Minghua(School of Resource and Environmental Engineering,Mianyang Teachers'College,Mianyang,Sichuan 621000;Key Laboratory of environment and applied microbiology,Chinese Academy of Sciences,Chengdu Institute of biology,Chinese Academy of Sciences,Chengdu,Sichuan 610041;School of Life Science and Technology,Mianyang Teachers'College,Mianyang,Sichuan 621000)

机构地区：[1]绵阳师范学院资源环境工程学院,四川绵阳621000 [2]中国科学院成都生物研究所中国科学院环境与应用微生物重点实验室,四川成都610041 [3]绵阳师范学院生命科学与技术学院,四川绵阳621000

出　　处：《绵阳师范学院学报》2022年第11期101-106,共6页Journal of Mianyang Teachers＇ College

基　　金：绵阳师范学院研究生创新基金项目“成渝地区农村面源污染现状调查及治理工程设计-以成都市简阳市永久村为例”(CX202119)。

摘　　要：生态沟渠技术因其易建设、低成本与少维护的优势在农村面源污染治理中被广泛应用,但存在单位面积净化效率低的明显问题.因此针对位于丘陵地区的成都市某村面源污染问题,选用美人蕉、伞草、泽泻与狐尾藻为栽培植物,联合火山石-沸石-陶粒组合基质,构建组合基质+植物(沟渠1)与纯土壤+植物(沟渠2)两种生态沟渠系统控制面源污染.探究两组沟渠对污染物净化作用及水力停留时间对沟渠1污染物去除效率的影响.试验期间生态沟渠运行监测结果表明,两组沟渠对COD、氨氮、硝氮、总氮与总磷均有明显去除效果,沟渠1对COD、总氮、总磷平均去除率比沟渠2分别高出14.06%、15.82%和15.31%.研究结果可为丘陵地区流域农村面源污染治理提供良好的参考作用.ecological ditch technology is widely used in rural non-point source pollution control because of its advantages of easy construction, low cost and less maintenance, but there is an obvious problem of low purification efficiency per unit area. Therefore, aiming at the problem of non-point source pollution in a village in Chengdu in hilly region, Canna, umbrella grass, Alisma orientalis and sargassum are selected and combined with volcanic rock zeolite ceramsite combined matrix, two ecological ditch systems of combined matrix + plant(ditch 1) and pure soil + plant(ditch 2) were constructed to control non-point source pollution. The purification effect of two groups of ditches on pollutants and the influence of hydraulic retention time on the removal efficiency of ditch 1 pollutants are explored. The monitoring results of ecological ditch operation during the test period show that the two groups of ditches have obvious removal effects on COD, ammonia nitrogen, nitrate nitrogen, total nitrogen and total phosphorus. The average removal rates of COD, total nitrogen and total phosphorus in ditch 1 are 14.06%, 15.82% and 15.31% higher than those in ditch 2 respectively. The results can provide a good reference for rural non-point source pollution control in hilly areas.

关 键 词：生态沟渠 农村面源污染 净化效果 水力停留时间 

分 类 号：X52[环境科学与工程—环境工程]