Aiming at the problems of a large-scale pig farm in Fuping County,Hebei Province,such as serious aging of wastewater treatment equipments,insufficient treatment capacity and substandard effluent quality,the"IC+SBR"process was adopted to treat the wastewater from the pig farm,and the treatment capacity of this process was designed to be 600 m3/d.The article mainly introduces the process and the main design parameters of this project,discusses the treatment effect of this treatment process on the wastewater from the pig farm,and analyzed its preliminary investment and operating costs.The results show that this project has a significant improvement on the water quality after wastewater treatment,the average removal rate of COD for the main pollutants in the wastewater is 96.36％,the average removal rate of BOD5 is 96.76％,the average removal rate of SS is 92.72％,and the average removal rate of ammonia nitrogen is 90.87％.All major pollutant indicators in the effluent water satisfy the emission regulations of the Discharge Standard of Pollutants for Livestock and Poultry Breeding(GB 18596-2001).
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