垂直潜流湿地低碳脱氮过程中的分层效应  

Stratification effect in the nitrogen removal process from low carbon water in vertical subsurface flow constructed wetland

作　　者：张曦冉 高桂兰[1,2] 陈帅 郭耀广[1,2] 梁波[1,2] 关杰[1,2] Zhang Xiran;Gao Guilan;Chen Shuai;Guo Yaoguang;Liang Bo;Guan Jie(School of Environmental and Material Engineering,Shanghai Polytechnic University,Shanghai 201209,China;Center for Resource Recycling Science and Engineering,Shanghai Polytechnic University,Shanghai 201209,China)

机构地区：[1]上海第二工业大学环境与材料工程学院,上海201209 [2]上海第二工业大学资源循环科学与工程中心,上海201209

出　　处：《工业水处理》2020年第9期99-104,共6页Industrial Water Treatment

基　　金：上海市高原学科-环境科学与工程(资源循环科学与工程);上海第二工业大学培育学科资助项目(XXKPY1601);上海市应用型本科专业(环境工程)建设项目(B50YC170000-5)。

摘　　要：在栽种有芦苇、菖蒲、伞草和美人蕉的垂直潜流人工湿地中进行NH4^+-N净化实验,研究不同植物在人工湿地上下层中氮素形态转化的时空特征。实验结果表明:在NH4^+-N初始质量浓度为40 mg/L的贫碳进水情况下,各类型人工湿地中均存在NH4^+-N和TN的快速消除期,分别为4 d和6 d。快速消除期内,不同类型人工湿地中,NH4^+-N和TN的去除负荷分别可达到后续实验持续时间内的5.28~7.05倍和4.15~15.91倍。除美人蕉湿地外,芦苇、菖蒲和伞草湿地均发生了NO3^--N的积累,积累期均集中在实验开始的第1 d至第12 d,积累程度分别为芦苇>菖蒲>伞草,积累质量浓度最大值为0.70~2.60 mg/L。NH4^+-N purification experiments were carried out in vertical subsurface flow constructed wetlands respec-tively planting with phragmites communis,calamus,cyperusalternifolius,and canna.The influence of temporal and spatial characteristics on nitrogen transformation of the plants in upper and lower layers setting in the constructed wet-lands were investigated.The result showed that the elimination of NH4^+-N and TN in various types of constructed wet-lands were obviously rapid at 4 and 6 days,respectively,on the condition of carbon-poor environment and the content of NH4^+-N in the culture liquid was about 40 mg/L.During the quick elimination period,the removal efficiencies of NH4^+-N and TN were 5.28 to 7.05 times and 4.15 to 15.91 times higher than that in subsequent experiment among di-fferent constructed wetlands.The accumulation of NO3^--N existed in phragmites communis,calamus and cyperusal-ternifolius,but canna,which occurred from the 1st day to the 12th day.The cumulant order of NO3^--N was as follows,phramites commuis>calamus>cyperusalternifolius,and the maximum concentration is between 0.70 and 2.60 mg/L.

关 键 词：人工湿地 垂直潜流 脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]