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Two-Phase Anaerobic Digestion of Carbonaceous Organic Materials
Two-Phase Anaerobic Digestion of Carbonaceous Organic Materials
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机译:含碳有机物的两相厌氧消化
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摘要
A process for improved methane production by two-phase anaerobic digestion of organic carbonaceous material in which organic carbonaceous material is fermented under anaerobic conditions in an acid phase digester, forming a liquid/solids effluent, the liquid/solids effluent is fermented under anaerobic conditions in a methane phase digester, product gas comprising methane is withdrawn from the methane phase digester, and oxygen is introduced into the methane phase digester. In a preferred embodiment, the methane phase liquid effluent is passed through a CO2 stripper resulting in stripping of CO2 and H2S from the methane phase liquid effluent. The resulting stripper liquid effluent comprising dissolved oxygen is then recycled back to the methane phase digester.
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