WASTE WATER TREATMENT METHOD AND WASTE WATER TREATMENT SYSTEM

To stabilize a quality of discharged waste water by stabilizing a load of each treatment process.SOLUTION: In a first separation tank 12, waste water is separated into an organic solid and a first waste liquid, a sludge containing the separated organic solid is solubilized by an activated sludge met...

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Bibliographic Details
Main Authors HIURA NAOTO, YAMAZAKI SEIICHI
Format Patent
LanguageEnglish
Japanese
Published 22.12.2022
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:To stabilize a quality of discharged waste water by stabilizing a load of each treatment process.SOLUTION: In a first separation tank 12, waste water is separated into an organic solid and a first waste liquid, a sludge containing the separated organic solid is solubilized by an activated sludge method to formulate a second waste liquid, the second waste liquid is returned to the first separation tank 12 to formulate a mixed waste liquid being a mixture of the first waste liquid and the second waste liquid, and the mixed waste liquid is transferred to an aerobic filter bed tank 14 different from the first separation tank 12 so as to perform biological membrane treatment utilizing aerobic microorganisms.SELECTED DRAWING: Figure 2 【課題】各処理工程の負荷を安定させて、放流水の水質を安定させる。【解決手段】第１分離槽１２内で、排水を有機固形物と第１廃液とに分離し、分離された有機固形物を含む汚泥を、活性汚泥法により可溶化して、第２廃液を生成し、第２廃液を第１分離槽１２に還流して、第１廃液と第２廃液とが混合した混合廃液を生成し、混合廃液を、第１分離槽１２とは別の好気ろ床槽１４に移送して、好気性微生物を利用した生物膜処理により処理する。【選択図】図２
Bibliography:Application Number: JP20210098298