SYSTEM AND METHOD FOR TREATING RURAL BLACK AND ODOROUS WATER AND MANURE

摘要

A system and method for processing rural black and odorous water and manure, comprising: (1) feeding manure into a solid-liquid separation system, adding straw and/or sawdust and rice hulls into the solid obtained by solid-liquid separation, adjusting the carbon nitrogen ratio, feeding the mixture into a solid aerobic fermentation system, then performing aerobic fermentation, and then performing aging to obtain an organic fertilizer; (2) feeding the liquid obtained by solid-liquid separation into a liquid anaerobic fermentation system, and performing deep anaerobic fermentation; (3) sending a biogas slurry obtained by deep anaerobic fermentation to a biofilm filter (34) and a fiber filter (36) for treatment; (4) irrigating crops with the treated liquid, or recycling the treated liquid; and (5) soaking the straw in manure within a straw hydrolysis tank so as to perform hydrolysis, then pumping the soaked soft straw into the solid-liquid separation system using a cutting pump, and then performing the treatment of steps (1)-(4) on the solid and liquid obtained by solid-liquid separation.