形变功率脉冲电源作用下电凝聚法处理印染废水.pdfVIP

_______________________________________________________________________________ 形变功率脉冲电源作用下电凝聚法处理印染废水 李冬黎 1 何湘宁 1 张秉坚 2 1 浙江大学电气工程学院 浙江 杭州 310027 2 浙江大学理学院 浙江 杭州 310027 摘要 利用电凝聚法对印染废水进行处理 研究了不同脉冲电压波形对电能净化效率和钝化现象的影响 实验研究发现 与传统的直流电凝聚法相比 利用周期换向方波对印染废水进行处理 可以显著地降低电 耗和电极损耗 并且从根本上克服电极钝化的问题 分析了脉冲功率作用下的电凝聚净化机理 脉冲功率 主要通过影响电凝聚的三个物理化学过程 即双电层电容效应 液相传质 吸附和脱吸附 以获得理想的 净化效果 本文的研究工作对于电凝聚法处理废水技术的工程应用具有重要的指导意义 关键词 脉冲电源 电凝聚 废水处理 印染废水 COD 色度 Treatment of Dye Wastewater by the Electrocoagulation with the Abnormal Pulsed Power Supply 1 1 2 LI Dongli , He Xiangning ,Zhang Bingjian (1 College of Electrical Engineering, Zhejiang University, Zhejiang, Hanzhou, 310027, China, 2 College of Science, Zhejiang University, Zhejiang, Hanzhou, 310027, China ) Abstract: The effect of different abnormal voltage shapes on the efficiency and electrode passivation in the treatment of dye wastewater by electrocoagulation with programmable pulsed power supply was investigated. The experiments showed that the elctrocoagulation with periodical-reversed-polarity square voltage had more advantages over traditional DC electrocoagulation in the wastewater treatment. One was that the consumption of energy and electrode was markedly reduced. The another was that the electrode passivation was completely avoided. The effect of pulsed voltage shapes on the chemistry and physical process included the double layer capacit