In this paper,the removel rate of organics in plate waste liquid by flocculation-ultrafiltration-catalytic ozonation processes was explored in lab.The result shows that the optimal conditions of processes like the follows: pH=9,flocculant dosing quality is 12.5mg/L,coagulant aid dosing quantity is 0.04mg/L,Water flow rate is 20L/h,operating pressure reach to 0.08MPa,The membrane surface flow velocity is 2×10-3mm/s,amount of ozone is 80mg/L,Ozone catalytic time is 40min.Under these conditions the treated wastewater can reach the standard of industrial water,the reuse rate of waste water can be higher than 90%.
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