Denitrifier for waste water
专利汇可以提供Denitrifier for waste water专利检索，专利查询，专利分析的服务。并且PURPOSE: To eliminate blinding problem for packed layer without stopping operation in particular in a denitrifier to remove nitrogen by a biological denitrification method.
CONSTITUTION: The packings 12 are filled in the packed tower 11 in such a way that packed layer is floated in immersed state in liquid and also the lower end of the packed layer is located above the stirring blade 15. The packings 12 used are preferably plastic, wood, or other ones without or with cavities inside of a specific gravity ranging from less than 1.0 to more than 1.0. The waste water Wd containing NO
3
- - N or NO
3
- -N and NO
2
- -N is charged into the lower end of the packed layer, directed upwards, and then discharged as the treated water Wt to the outside. During the process, NO
3
- -N and NO
2
- -N present in the waste water are converted into N gas by the action of denitrifying bacteria adhered to and grown on the surface of the packings 12 and then the N gas is exhausted through the outlet of the treated water Wt to the outside. With the lapse of the treatment days, the packed layer is blocked with the denitrification sludge and then the packings 12 are fluidized by turning the stirring blade 15 every a fixed period in order to remove the denitrification sludge blocking the space of the packed layer.
COPYRIGHT: (C)1980,JPO&Japio，下面是Denitrifier for waste water专利的具体信息内容。
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