Patent ID: 6383379
Filing Date: 2002-05-07
Classification: C02F,C12N,Y02W

Abstract:
A wastewater treatment plant comprising:a primary settling tank for removing a solid substance and a suspended solid substance from a raw sewage; an aeration tank for decomposing an organic material in a raw sewage by aerating the raw sewage with a microorganism, the aeration tank being linked to the primary settling tank; a bioreactor linked to the aeration tank, the bioreactor being supplied with an aerated material form the aeration tank and a supplementary culture medium, wherein the aerated material comprises a plurality of different microorganisms, preparing a microbial culture by mixing the aerated material with the culture medium, and supplying the microbial culture including the plurality of different microorganisms to the aeration tank; and a secondary settling tank for settling tank for settling a sludge floc supplied from the aeration tank, the settling tank being linked to the aeration tank.