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Solid-liquid separation and anaerobic pretreatment technology

issuing time:2018/3/22 9:31:32
Water discharged from a hog house carries a large amount of feces, most of the feces is crude fiber which is not completely digested, the part of pollutant is not easy to decompose but is a good raw material for producing organic fertilizer, and therefore effective solid-liquid separation must be conducted before wastewater anaerobic acidification pretreatment (in other words, before wastewater enters a biogas digester). Livestock wastewater enters the biogas digester after being subjected to solid-liquid separation, anaerobic pretreatment is conducted so that the COD concentration in the wastewater can be substantially lowered, and meanwhile generated biogas can be used for electricity generation.