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污水二级处理
oil
sewage secondary treatment
tech.
secondary treatment for sewage
;
secondary treatment of sewage
;
secondary wastewater treatment
污水二级处理
指在一级处理的基础上,进一步除去污水中的微细粒子,一般是添加硫酸铝等凝聚剂,使微细粒子凝聚,呈絮状物沉降下来,利用絮状物的吸附力,把被吸附的污物除去
ecol.
waste water middle class treatment
污水二级 处理
:
21 phrases
in 3 subjects
Ecology
2
Technology
15
Water resources
4
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