Treatment of excretion
专利汇可以提供Treatment of excretion专利检索，专利查询，专利分析的服务。并且PURPOSE: To efficiently recover phosphoric acid, by a method wherein the liquid mixture of a bioreactor is treated with an ultrafiltration membrane and the membrane transmitted liquid is separated from a concn. liquid mixture to be subjected to low pressure reverse osmosis membrane treatment to obtain a concn. liquid which is, in turn, dripped to an aerobic fermentation tank.
CONSTITUTION: The liquid mixture 6 is treated with activated sludge in a bioreactor 4 is separated into a membrane transmitted liquid 18 and a conc. liquid mixture 19 by ultrafiltration membrane treatment 17. The conc. liquid mixture 19 is returned to the bioreactor 4 to be again treated with activated sludge. The membrane transmitted liquid 18 is subjected to low pressure reverse osmosis membrane treatment 20 and CODMN and chromaticity phosphoric acid contained in the membrane transmitted liquid 18 are not transmitted through the reverse osmosis membrane and said transmitted liquid 18 is separated into a conc. liquid 21 containing both components and a treated liquid 22. This conc. liquid 21 is dripped to be thrown in a secondary fermentation tank 7. By this method, phosphorus can be recovered without performing flocculative sedimentation treatment and compost rich in a phosphoric acid component is obtained.
COPYRIGHT: (C)1987,JPO&Japio，下面是Treatment of excretion专利的具体信息内容。
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