臭氧技术处理印染废水研究进展

印染废水经二级处理后,其残余的污染物及色度仍会对环境造成很大影响。因此,高效处理技术的研发十分必要。臭氧在水中具有较高的氧化还原电位,能够降解并矿化部分有机污染物。臭氧氧化与其它水处理技术相结合产生氧化性更强的羟基自由基,能够快速、无选择性地降解有机物,是处理印染废水行之有效的方法。综述了几种高效、实用的臭氧处理技术:臭氧/紫外光法、臭氧/过氧化氢法、臭氧/活性炭法和臭氧/生物炭法。并指出了该技术在工程应用中存在的问题:反应器内泡沫的大量产生、沉淀物的生成以及臭氧对反应设备的腐蚀等。提出了开发不同处理工艺的有效组合是臭氧技术应用于印染废水处理中的研究和发展方向。

Research progress on treatment of printing and dyeing wastewater by ozone technology

As the residual pollutants and chroma of the printing and dyeing wastewater can cause great negative impact on environment even after the two-stage treatment,to research and develop an advanced treatment technology is very necessary.With a high Eh,ozone dissolved in water can degrade and mineralize some organic pollutants.The hydroxyl radical produced through the combination of ozone technology and other processes has a higher oxidizability which is able to oxidize organic pollutants rapidly and non-selecti...