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表面流-垂直流复合湿地去除低碳氮比河水中氨氮
Authors
刘剑彤()
刘卫兵()
+5 more
崔宾飞()
李四团()
汪尚朋()
郭亮()
黄小龙()
Publication date
1 January 2018
Publisher
Abstract
为了研究丹河人工湿地在不同温度下对低C/N值河水中氨氮的去除能力,于2015年1月“月对丹河人工湿地各处理单元进、出水中NH4-N和COD进行了逐日监测。结果显示,沉水植物型表面流-垂直流复合人工湿地对河水中SH;-N的平均去除率随温度的升高从50.1%上升到80.2%,低温条件下,NH4-N主要在垂直流湿地单元中被去除。温度〈15℃时,复合系统中垂直流单元对NH4-N的去除率介于50.6%-72.3%之间,显著高于单-垂直流人工湿地(27.5%-45.8%),说明表面流人工湿地有助于后续垂直流人工湿地对氨氮的去除。通过对湿地各单元进、出水中溶解氧含量的测定,推测表面流湿地单元的增氧作用可能是保证后续垂直流单元在低温条件下具有高氨氮去除能力的主要原因
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Institute of Hydrobiology, Chinese Academy Of Sciences
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Last time updated on 23/01/2021