光催化氧化深度处理电镀有机废水的工程化实验

采用光催化氧化联用技术对电镀有机废水进行深度处理工程化实验。探讨了uV、uV＋H2O3、uV＋H2O2＋TiO2、uV＋H2O2＋FeSO4、uV＋H2O2＋FeSO4＋TiO2、uV＋O3＋TiO2和uV＋03＋TiO2＋H2O2等体系对废水有机污染物去除率的影响。结果表明，相较于其他反应体系，uV＋O3＋TiO2＋H2O2体系具有更好的氧化效果，经碳滤处理后去除率达到90％以上，最终出水水质满足GB18918-20O2-级标准（A标准）的要求。实际运行项目偿还期5．33年，NPV〉0，内部收益率大于基准值10％。研究表明，uV＋O3＋TiO2＋H2O，体系能降低加药量，工作量及运行成本。可为电镀企业实际废水处理提供现实依据，为优化电镀废水的处理工艺提供参考。

Engineering experiment of electroplating organic effluent advanced treatment by photocatalytic oxidation

Photocatalytic oxidation coupling techniques were used in engineering experimental study of elec- troplating organic effluent advanced treatment. The various effects of COD removal by different systems ： UV, UV ＋ H2O2 ,UV ＋ H2O2 ＋TiO2 ,UV ＋ n2O2 ＋ FeSO4 ,UV ＋ H2O2 ＋ FeSO4 ＋ TiO2 ,UV ＋ O3 ＋ TiO2 and UV ＋ O3 ＋ TiO2 ＋ H2 O2were discussed. It shows that the UV ＋ O3 ＋ TiO2 ＋ H2O2 system has the best oxidation effect com- pared with other systems. With the eventual effluent filtered by activated carbon, the COD removal rate can reach as high as 90% , which meets the GB18918-20O2 standard （A Level）. Actual project repayment period was 4.31 years, NPV 〉 0, internal rate of return is greater than 10% benchmark. Experimental investigation shows that, the adoption of UV ＋ O3 ＋ TiO2 ＋ H2O2 system can reduce the raw materials dosage, workload and running cost,which will provide realistic basis and reference to electroplating wastewater treatment process opti- mization.