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Purification of nitrate-nitrogen in river filtration systems
Author(s): 
Pages: 24-28,43
Year: Issue:  1
Journal: HYDROGEOLOGY & ENGINEERING GEOLOGY

Keyword:  硝态氮渗滤系统净化机制反硝化作用;
Abstract: 河流渗滤系统对入渗的地表水有一定的净化作用,过去人们很少从理论上研究河流渗滤系统对污染河水的净化作用.本文采用室内土柱实验装置来模拟渭河渗滤系统,研究了硝态氮污染的河水在该系统中的环境行为及净化机制,其环境行为主要为反硝化作用.其净化程度与该渗滤系统的渗滤介质有关,如果渗滤介质为粘土,其净化率达到100%.若介质为粗砂粒物质,其净化程度较低.
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