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    • 3. 发明授权
    • Anaerobic digestion process for organic wastes
    • 有机废物厌氧消化过程
    • US4491522A
    • 1985-01-01
    • US551730
    • 1983-11-15
    • Masahiko IshidaRyoichi HagaTadashi IshibashiYoji Odawara
    • Masahiko IshidaRyoichi HagaTadashi IshibashiYoji Odawara
    • B09B3/00C02F3/28C02F3/30C02F11/04
    • C02F3/28C02F3/30Y02E50/343Y10S435/801
    • The present invention relates to an anaerobic digestion process for organic wastes with a high efficiency and an improved recovery rate of methane.This process comprises the following steps: (1) anaerobically digesting organic wastes under simultaneous presence of facultative anaerobic bacteria and obligatory anaerobic bacteria, (2) separating the anaerobically digested slurry obtained from the step (1) into a liquor fraction containing the two groups of bacteria and an undecomposed solid fraction, (3) mixing the liquor fraction obtained from the step (2) with the surplus activated sludge slurry produced by anaerobically treating organic waste water, under anaerobic condition, (4) separating the mixed slurry obtained from the step (3) into a solid fraction containing the surplus activated sludge which has absorbed the two groups of bacteria and a liquor fraction, and recycling back the solid fraction obtained from the step (4) as the sources of the two groups of bacteria and nitrogen to the step (1).
    • 本发明涉及一种具有高效率和提高甲烷回收率的有机废物的厌氧消化方法。 该方法包括以下步骤:(1)在兼性厌氧菌和强制性厌氧菌同时存在下厌氧消化有机废物,(2)将由步骤(1)获得的厌氧消化浆液分离成含有两组 细菌和未分解的固体部分,(3)将在步骤(2)中获得的液体馏分与在厌氧条件下厌氧处理有机废水产生的剩余活性污泥浆混合,(4)将从步骤 (3)成为含有吸收了两组细菌和液体馏分的剩余活性污泥的固体成分,将从步骤(4)获得的固体成分作为两组细菌和氮源的来源循环回到 步骤(1)。