氮形态对人工湿地氮去除效果的影响  

Effect of Nitrogen Forms on Denitrifying Efficiency in Constructed Wetlands

作　　者：连小莹[1] 金秋[2] 李先宁[3] 杨腊梅[1] 

机构地区：[1]解放军理工大学工程兵工程学院,江苏南京210007 [2]南京水利科学研究院,江苏南京210029 [3]东南大学环境工程系,江苏南京210096

出　　处：《环境科技》2011年第1期26-28,共3页Environmental Science and Technology

基　　金：水利部948项目(200909)

摘　　要：采用水平潜流人工湿地处理TN质量浓度为20～25 mg/L,氮形态分别以NH_4^+-N,NO_3^--N和有机氮为主的生活污水,分析了氮形态对人工湿地N去除效果的影响。试验结果显示:相应的TN去除率分别为47.2%,71.6%和33.1%,表明人工湿地主要适用于水的深度处理,实现污水中N的无机化特别是将N转化为NO_3^--N,可显著提高人工湿地的N去除效果。Horizontal subsurface flow constructed wetlands were used in rural domestic sewage treatment, the effect of nitrogen forms on denitrifying efficiency in constructed wetlands were analyzed when TN were 20 -25 mg/L with the nitrogen forms was NH4＋- N, NO3-- N and organic nitrogen respectively. The results show that nitrogen removal efficiency are 47.2%, 71.6% and 33.1%, respectively. Constructed wetland is suitable for advanced treatment and can transform organic nitrogen to inorganic nitrogen, especially to NO3-- N, and significantly improve TN removal efficiency.

关 键 词：水平潜流人工湿地 氮去除效果 氮形态 

分 类 号：X2[环境科学与工程—环境科学]