曝气位置对垂直潜流人工湿地脱氮效率研究  

Research on the influence of aeration position on the denitrification rate of the vertical flow constructed wetlands

作　　者：蒲帅 徐栋[2] 童伟军 王琦[1,2] 陈迪松 程翔 张婷 张义 吴振斌[1,2] Pu Shuai;Xu Dong;Tong Weijun;Wang Qi;Chen Disong;Cheng Xiang;Zhang Ting;Zhang Yi;Wu Zhenbin(College of Resource and Environmental Engineering,Wuhan University of Science&Technology,Wuhan 430070,China;National Key Laboratory of Freshwater Ecology and Biotechnology,Institute of Hydrobiology,Chinese Academy of Sciences,Wuhan 430072,China;Wuhan Real-estate Development&Investment Group Co.,Ltd.,Wuhan 430022,China)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]中国科学院水生生物研究所淡水生态和生物技术国家重点实验室,湖北武汉430072 [3]武汉地产开发投资集团有限公司,湖北武汉430022

出　　处：《工业水处理》2019年第1期91-95,共5页Industrial Water Treatment

基　　金：湖北省环保厅科研专项(2015HB14);湖北省自然科学基金青年基金项目(2014CFB282);湖北省技术创新专项软科学研究类项目(2016ADC101)

摘　　要：针对垂直流人工湿地脱氮效率低的问题,在垂直流人工湿地不同位置投加释氧材料,以此探究曝气位置对垂直流人工湿地脱氮的影响。结果表明,在湿地下层曝气,TN去除率最高;在湿地上层曝气,NH_4^+-N去除率最高。TN的去除率并非完全取决于氨氮的去除率,有机氮的去除也影响着TN去除率。曝气位置还影响湿地脲酶活性,下层曝气的湿地脲酶含量最高,为60.37μg/g;中层曝气的湿地脲酶含量最低,为26.72μg/g。此外,各系统脲酶活性与TN去除率相关。To solve the problem of low denitrification rate of vertical flow constructed wetland,a kind of oxygen-re-leasing compound(ORC)has been put into different locations in vertical flow artificial wetland,so as to explore the influence of aeration position on the denitrification of vertical flow constructed wetland.The results show that when the aeration position is in the upper layer of the wetland,the removing rate of NH4^+-N is the highest.When the aeration position is in the lower layer of the wetland,the removing rate of TN is the highest.The removing rate of TN does not totally depend on the removing rate of NH4+-N,and the removing rate of organic nitrogen affects its TN removing rate.The aeration position affects the activity of urease in the wetland,and the lower layer aerated wetland has the highest concentration of urease,which is 60.37μg/g,the middle layer aerated wetland has the lowest concentration of urease,which is 26.72μg/g.In addition,urease activity is related to TN removing rate.

关 键 词：曝气位置 垂直流人工湿地 脲酶 脱氮 

分 类 号：X703.1[环境科学与工程—环境工程]