#$%^&*AU2020100061A420200220.pdf#####Abstract The invention discloses a harmless treatment system and a method for livestock and poultry breeding wastewater, which comprises a wastewater treatment system and a sludge treatment system. The wastewater treatment system includes a collecting tank, a solid-liquid separator, an air floatation-settling tank, an acidification tank, a UMIC anaerobic reactor, a recycling tower, an air flotator, an ammoniation tank, a primary settling tank, a nitrification tank, a secondary settling tank, an aeration tank, a tertiary settling tank and a storage tank successively connected to each other. Mainly based on the UMIC double internal circulation anaerobic reactor, the invention combines physicochemical and biochemical methods to conduct harmless treatment of livestock and poultry breeding wastewater. The concentration of pollutants in the treated water can meet the requirements of the Discharge Standard of Pollutants for Livestock and Poultry Breeding (GB18596-2001). Then the wastewater can be directly discharged to the surrounding cropland for irrigation, which brings certain economic benefits to the surrounding farmers.Manure Storage Biog- Heaing swine Collecting Solid-liquid Air Floatation- Acidification Wastewater Tank Separation Tank s ettling Tank Tank ---Dross and Bottom Sude Filter Cake Filter Transported -6--- press ----- SludgeTank Outside UMIC PAM Sudge PAM-'-WaterFiltered Connected to the Air Flotator Biogas Tank Acidification Tank .. Nitrification Tank ___Pnmary Settling Ammornation Tan Biogas Heater Sludge Tn Refhn Fan -.. Secondary Settling Aeration Tank Tetiary Settling Storage Tank The Remaining Sludge to the Sludge Tank Sludge Refux Figure 2
