Abstract:
The wastewater treatment and resource utilization of a large-scale piggery farm in Hua'an County of Zhangzhou City were studied. After the treatment process of mechanical cleaning, solid-liquid separation, biogas fermentation, A/O aeration and biological purification pond, the removal rates of SS, COD, BOD, ammonia nitrogen and total phosphorus were 99.81%, 99.43%, 99.64%, 97.61% and 98.58% respectively, and the final water quality met the requirements of "Standard for Pollutant Discharge from Livestock and Poultry Breeding Industry" (GB18596-2001).