Determination of aquaculture wastewater treatment process

Due to the high concentration of COD in pig wastewater, according to our previous engineering experience in similar wastewater treatment and the drainage characteristics of pig farms, anaerobic reactor is used to strengthen anaerobic biochemical treatment, and then "A²"/O" biofilm contact oxidation treatment process, so that not only can ensure standard emissions, but also can produce energy biogas, so we decided to use hydrolytic acidification + anaerobic + aerobic (biological contact oxidation) treatment process