臭氧高级氧化技术处理酸性红B染料废水

目的研究臭氧氧化技术处理酸性红B染料废水的效果,并探讨O3投加量、废水的初始pH值、H2O2和O3物质的量比对臭氧氧化处理酸性红B染料废水效果的影响.方法依据臭氧高级氧化的机理,在实验室反应器中通过实验考察在臭氧氧化处理酸性红B染料废水过程中,控制不同的O3投加量、废水的初始pH值、H2O2和O3物质的量比对酸性红B染料废水的色度和COD去除率的影响.结果在pH=7的条件下,单一臭氧氧化30 m in时,废水的色度和COD去除率分别为99.5%和37.9%;而废水的初始pH值控制在11左右时,COD去除率有较大提高.O3/H2O2氧化工艺,适宜的H2O2和O3物质的量比为0.6,氧化处理30 m in废水的COD去除率可达53.5%.结论O3高级氧化能够有效降解酸性红B染料废水,在臭氧反应体系中投加H2O2可以明显提高降解速率,缩短处理时间,降低O3耗量.

Experimental Study on Degrading Acid Red B in Advanced Oxidation Technology of Ozonization

The Advanced Oxidation Processes of ozonization technique was used in treatment of the acid red B dye wastewater. Operation parameters such as the dosage of O3, the initial pH of the wastewater and the molar ratio of H2O2 to O3 were optimized based on the decolorization efficiency of acid red B in dye wastewater. Results showed that advanced oxidation technique of ozonization has a good effect on removal of acid red B. After 30 min reaction with pH - 7, up to 99.5 % of color decay was obtained and chemical oxygen demand（COD） was 37.9%. If initial pH of the wastewater was increased to 11, the removal rate of COD was optimum. With combination of H2O2 ,the molar ratio of H2O2 to O3 was adjusted to 0.6 and 53. 5 % removal rate can be achieved after 30 min treatment.