Experimental study and engineering application of Fenton advanced oxidation method for treating calcium carbide process PVC polymerization kettle washing wastewater
A small-scale experiment was conducted on treating washing wastewater of calcium carbide process PVC polymerization kettle by using Fenton advanced oxidation method.The results showed that under the experimental conditions of pH 3.5,reaction time of 60 minutes,mass ratio of H2O2 to COD of 1:1,and molar ratio of H2O2 to Fe2+ of 3:1,while considering COD removal rate and operating cost,the biological toxicity of the treated wastewater was significantly reduced,and the bio-degradability was significantly improved.Afterwards,biochemical treatment was adopted as the main method and other guarantee treatment processes were introduced.The final effluent COD could be stabi-lized below 30 mg/L,and all indicators met the requirements for reuse of circulating water and cooling water in the plant.
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维普
