Recently, the flat ceramic membrane water treatment technology has been successfully applied to a printing and dyeing plant in Zhejiang Province. The original process of the sewage treatment station is aerobic + Anaerobic + sedimentation. Before the transformation, the COD of the effluent water is about 120mg / L and the chroma is about 60 times. After the transformation by adding the flat ceramic membrane water treatment unit, the COD of the effluent water is less than 50mg / L and the chroma is less than 30, reaching the national standard Set the latest standards of sewage discharge in textile industry.