Method and apparatus for biological denitrification of waste water
专利汇可以提供Method and apparatus for biological denitrification of waste water专利检索，专利查询，专利分析的服务。并且PURPOSE: To remarkably save a charge amount of an organic carbon source in a denitrification step, by nitrifying waste water containing organic nitrogen and ammoniac nitrogen with nitrifying bacteria, removing dissolved oxygen from the waste water, and then denitrifying the waste water with denitrifying bacteria.
CONSTITUTION: Stock waste water is introduced into a predenitrifying vessel 1 at first, where part of nitrogen in the waste water is used as a nitrogen source for denitrifying bacteria and organic carbon in the waste water is effectively used for the denitrification and reduced remarkably. The waste water is then introduced into a nitrifying vessel 2, where ammoniac nitrogen is nitrified with nitrifying bacteria. Thereafter, the waste water is treated in a dissolved oxygen-removing vessel 10 provided with a stirrer, to remove dissolved oxygen. Part of the liquid is returned to the vessel 1, and the remainder is introduced into a denitrifying vessel 3. In the vessel 3, the introduced liquid to be treated is mixed with an organic carbon source supplied from an organic carbon source reservoir 5, and denitrified with denitriflying bacteria. The denitrified liquid is subjected to solid-liquid separation in a sedimentation pool 4 to separate disposed water from bacteria. The vacteria are returned to the vessel 1.
COPYRIGHT: (C)1981,JPO&Japio，下面是Method and apparatus for biological denitrification of waste water专利的具体信息内容。
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