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Biological treatment of organic waste water

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专利汇可以提供Biological treatment of organic waste water专利检索,专利查询,专利分析的服务。并且PURPOSE: To control the activity of nitrification bacteria in mixed microbes and to reduce the NO
x in the treated water by placing the whole or a part of return sludge under anaerobic conditions for more than specified hours, and then circulating the return sludge to an aeration tank.
CONSTITUTION: In the treatment of waste water contg. org. carbon compds. and reduced nitrogen compds. by activated sludge, the whole or a part of return sludge is placed under anaerobic conditions for ≥20hr and then circulated to an aerobic stage. Consequently, since only the nitrification activity of the sludge can be selectively controlled, the formation of NO
x
- is controlled, and various problems resulting from the generation of NO
x
- can be settled.
COPYRIGHT: (C)1987,JPO&Japio,下面是Biological treatment of organic waste water专利的具体信息内容。

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