专利汇可以提供Water treating method专利检索,专利查询,专利分析的服务。并且PURPOSE: To efficiently denitrify intrified water contg. activated sludge at an increased denitrification rate by denitrifying the water while agitating with gas of high CO
2 concn. to control shift of the water to the alkali side.
CONSTITUTION: N-contg. water to be treated is fed 3 to divided vessel 1a of catalytic nitrification vessel 1 and aerated by supplying 5a O
2 -contg. gas. The aerated water is sent to divided vessel 1b to nitrify the dissolved N with intrate-forming bacteria, etc. in activated sludge under aerobic conditions. The nitrified water is fed to denitrification vessel 8 together with the sludge and agitated by blowing 12 gas T of high CO
2 concn. through aerator 11. At this time, an org. C source such as methanol necessary to facultative anaerobic denitrification bacteria is supplied into vessel 8 beforehand. The nitrified water is biochemically reduced in vessel 8 to gasification-remove the N contained. The CO
2 blown maintains the pH of the water optimum and facilitates activation of the denitrification bacteria.
COPYRIGHT: (C)1980,JPO&Japio,下面是Water treating method专利的具体信息内容。
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