污水二级处理是污水经一级处理后，再经过具有活性污泥的曝气池及沉淀池的处理，使污水进一步净化的工艺过程。
本文对炼油厂含油污水处理厂增设二级浮选的点位设在曝气池之后并采用JHX多级射流浮选罐可行性进行了论证和分析。
We use JHX multilevel jet floatation pot as secondary floatation point after aeration pond in oil containing sewage farm of refinery. This paper discusses the feasibility of this method.
通过和RBC工艺结合，该系统可以提供非常简单的总包工厂对污水作二级处理。
In combination with the RBC process, this system provides a very simple package plant for secondary treatment.
某制浆造纸厂污水处理原采用二级生化处理工艺。
The effluent disposal system in certain pulp and paper mills was a two-stage biochemical treatment process.
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