%0 Journal Article
%T Natural Biodegradation for COD of Paper Mill Wastewater in Unsaturated Zone<br>包气带中造纸废水COD天然生物降解作用
%A Cao Wenbing
%A Duan Baoxu
%A Zhang Cheng
%A <br>曹文炳
%A 段保需
%A 张诚
%J 环境科学
%D 2000
%I 
%X In this paper distribution of natural biochemical layer and its biodegradation capability and mechanism in the unsaturated zone under the paper mill wastewater channel were studied through field tests and column experiments. The results indicated that the biochemical layer was composed of a oxidation zone and a reductive zone, thickness of biochemical layer was controlled by the thickness of the unsaturated zone. When thickness of unsaturated soil zone exceeds 10m, the biochemical layer developed well, the removal rate for COD was above 97%.
%K biodegradation
%K COD
%K paper mill wastewater
%K unsaturated zone<br>造纸废水
%K COD
%K 生物降解
%K 包气带
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=577C1A93A2072551&yid=9806D0D4EAA9BED3&vid=659D3B06EBF534A7&iid=CA4FD0336C81A37A&sid=331211A5F5616413&eid=03F1579EF92A5A32&journal_id=0250-3301&journal_name=环境科学&referenced_num=5&reference_num=4