Fuxin F-Block invested 10 million yuan to build a sewage treatment workshop covering an area of 3,600 square meters, which is used to treat the process wastewater of the production workshop to avoid environmental pollution. The comprehensive treatment capacity is 110 tons per day. In the process wastewater treatment, according to the different process wastewater components strict classification, mainly according to the wastewater COD, ammonia nitrogen, total phosphorus, total salt content of different pretreatment, after adsorption decolorization, sedimentation, three effect desalting, etc., to meet the treatment requirements.