人工湿地挺水植物脱氮效果研究  

The nitrogen removal effect of emergent plant in constructed wetland

作　　者：褚润[1] 陈年来[1] 王小娟[1] 王巧芳[1] CHU Run CHEN Nianlai WANG Xiaojuan WANG Qiaofang.(College of Resources and Environmental Sciences ,Gansu Agricultural University ,Lanzhou Gan- su 73007)

机构地区：[1]甘肃农业大学资源与环境学院,甘肃兰州730070

出　　处：《环境污染与防治》2017年第8期884-889,894,共7页Environmental Pollution & Control

基　　金：甘肃省青年科技基金计划资助项目(No.1506RJYA004);甘肃农业大学资源与环境学院青年教师培育基金资助项目(No.NDZH2015-01)

摘　　要：为了比较不同季节人工湿地挺水植物的脱氮效果,以菖蒲(Acorus calamus)、香蒲(Typha angustifolia)和芦苇(Phragmites australis)3种挺水植物为材料构建潜流型人工湿地,在春夏、夏秋两季间歇式均匀布水条件下,通过测定污水中pH及溶解氧(DO)、氨氮、硝态氮、总氮浓度,分析不同季节挺水植物的脱氮效果。结果表明:出水DO浓度在春夏季表现为对照(CK)湿地>菖蒲湿地>香蒲湿地>芦苇湿地,在夏秋季表现为CK湿地>菖蒲湿地>芦苇湿地>香蒲湿地;人工湿地出水pH均呈弱碱性,种有挺水植物的人工湿地在春夏季和夏秋季的pH分别为7.33~8.09、6.81~7.59;在春夏季,芦苇湿地的总氮去除率最高;在夏秋季,香蒲湿地的总氮去除率最高。In order to compare nitrogen removal effect of emergent plant in constructed wetland in different sea sons,3 kinds of emergent plants （Acorus calamus, Typha angustifolia and Phragmites australis） were used to build subsurface flow wetlands. Under intermittent uniform cloth water in spring-summer and summer-autumn season, through the determination of effluent pH,dissolved oxygen （DO）,ammonia nitrogen, nitrate nitrogen and total nitro gen concentrations,nitrogen removal of emergent plants in different seasons was analyzed. The results showed that, the effluent DO concentrations in spring-summer season ranked control （CK） wetland〉Acorus calamus wetland〉 Typha angustifolia wetland〉Phragmites australis wetland while in summer-autumn season ranked CK wetland〉Acorus calamus wetland〉Phragmites australis wetlandS〉 Typha angustifolia wetland. The effluent pH in spring summer and summer-autumn season were weakly alkaline, raring within 7.33-8.09 and 6.81-7.59, respectively. In spring-summer season,total nitrogen removal efficiency of Phragmites australis wetland was the highest, while in summer-autumn sesaon,total nitrogen removal efficiency of Typha angustifolia wetland was the highest.

关 键 词：人工湿地 挺水植物 脱氮效果 

分 类 号：X703[环境科学与工程—环境工程]