According to the wastewater quality and discharge requirements, our company adopts the "pretreatment + hydrolysis + anaerobic + aerobic" treatment process. After treatment, the effluent can reach the following indicators: CODcr≤100mg/l, BOD5≤30mg/l, SS≤20mg/l, NH3-N≤15mg/l, TN≤25mg/l, TP≤1.0mg/l.