For this kind of wastewater, our company adopts "comprehensive pretreatment (coagulation, filtration, blowing off) + MBR system (AO + ultrafiltration) + nanofiltration + reverse osmosis" process for combined treatment, after treatment, the effluent can reach the standard of "pollution control standards for domestic waste landfill" (GB16889-2008), and the quality of effluent water is: CODcr≤100mg/l, BOD5≤30mg/l, SS≤30mg/l, NH3-N≤25mg/l, TN≤40mg/l, TP≤3.0mg/l.