有機性廃水処理設備および方法

Organic wastewater treatment facility and method

Abstract

PROBLEM TO BE SOLVED: To provide an organic wastewater treatment facility and method, eliminating the deficiency in an iron component in an anaerobic digestion process and an aerobic treatment process so that the treatment capacity of both the anaerobic digestion process and an aerobic treatment process can be exerted to the maximum.SOLUTION: The organic wastewater treatment facility includes: an anaerobic digester tank 51 that anaerobically digests organic wastewater; a solid-liquid separator 53 that separates digestive sludge 512 of the anaerobic digester tank 51 into solid and liquid; an aerobic treatment tank 54 that subjects a liquid phase separated by the solid-liquid separator 53 to aerobic biotreatment; an iron component supply unit 511 that supplies the iron component to the anaerobic digester 51; and a digestive sludge supplying means 513 that supplies a portion of the digestive sludge containing a solid from the anaerobic digester tank 51 to the aerobic treatment tank 54.
【課題】嫌気性消化工程および好気性処理工程における鉄成分の不足を解消して嫌気性消化工程および好気性処理工程の双方の処理能力を最大限に発揮させることができる有機性廃水処理設備および方法を提供する。 【解決手段】有機性廃水を嫌気性消化する嫌気性消化槽51と、嫌気性消化槽51の消化汚泥512を固液分離する固液分離手段53と、固液分離手段53により分離した液相分を好気的に生物処理する好気性処理槽54と、前記嫌気性消化槽51に鉄成分を供給する鉄成分供給手段511と、固形物を含んだ前記消化汚泥の一部を前記嫌気性消化槽51から前記好気性処理槽54へ供給する消化汚泥供給手段513を備える。 【選択図】図1

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