摘要：

为了更有效地实现工业废水的“零排放”，并且得到满足回用要求的高度净化回用水，研发了电化学紫外光联用耦合膜过滤技术对“零排放”工艺中双膜法当中的超滤或微滤预处理技术进行改良。结果发现，经过该工艺处理后的中水，其COD和UV₂₅₄相比于单独膜过滤或电化学膜过滤工艺具有更高的去除率，且使用UVC作为电化学紫外光联用耦合膜过滤技术的光源处理废水时，水中COD的去除率相较于使用UVA紫外光光源的去除率更高。通过对不同处理时间三维荧光激发发射光谱图（EEM）的分析发现，被该技术所去除有机物的主要组分为腐殖质类物质以及蛋白质类物质，特别是腐殖质类组分的浓度显著降低。有机物的去除主要是由于电化学和紫外光联用可产生多种强氧化性自由基，从而降解废水中的有机污染物。

关键词: 中水, 工业废水, 电化学, 紫外光, 膜过滤

Abstract:

To reach the aim of “zero discharge”of industrial wastewater，and to get the high quality purified water for the reuse of reclaimed water，a combined process of electrochemical⁃ultraviolet⁃membrane filtration for the pre⁃treatment of the reclaimed water of the industrial discharge was developed，which obtained a higher efficiency comparing to the process of double membrane process using ultrafiltration or micro⁃filtration technology. The results showed that the removal rates of COD and UV₂₅₄ of the reclaimed water treated by this process were higher than those by single membrane filtration or electrochemical membrane filtration. And when UVC was used as the UV source of electrochemical⁃ultraviolet⁃membrane filtration technology to treat wastewater，the removal rate of COD was higher than that of UVA. This study also found that the combined process had a good effect when it comes to proteins，and especially to humus removal by analyzing EEM of samples gained from each hours of the reaction. The removal of organic compounds was mainly due to the electrochemical and ultraviolet light，which could produce a variety of free radical oxidation of degradation of organic pollutants in wastewater.

Key words: reclaimed water, industrial wastewater, electrochemical, ultraviolet, membrane filtration

中图分类号: 

• X703.1