活性炭催化臭氧化降解亚甲基蓝实验

研究了活性炭催化臭氧化降解模拟染料废水亚甲基蓝溶液,考察了臭氧化空气流量、pH值、废水初始质量浓度和活性炭用量等因素对处理效果的影响。结果表明：该法可有效去除有机物,废水在低质量浓度、碱性条件下对反应有利;在亚甲基蓝初始质量浓度100mg·L^-1,pH9.5,活性炭9g·L^-1,反应90min条件下,色度去除率达到了95.6%,化学需氧量（COD）去除率达到了64.8%;活性炭催化臭氧化废水以间接氧化为主,活性炭可促进臭氧化过程产生·OH自由基并提高其利用率,相对于单独臭氧化过程,废水COD去除率可显著提高。

Catalytic ozonation with activated carbon for degradation of methylene blue in wastewater

The effect of ozoniferous air flux, pH, as well as initial concentration and quantity of activated carbon for degradation of a simulated dye wastewater of methylene blue was studied. Experimental results indicated that methylene blue wastewater was effectively decomposed using a low initial concentration of methylene blue and a high pH. For 90 min at an initial concentration of 100 mg·L^-1 of methylene and pH of 9.5 with 9 g·L^-1 of activated carbon, the removal rate for color was 95.6% and for the chemical oxygen demand （COD） was 64.8%. Activated carbon not only accelerated the generation of ＂OH radicals, but also enhanced their reaction with methylene blue so that in the process of catalytic ozonation with activated carbon, indirect oxidation dominated. Compared with a single ozonation, the removal rate of COD was heightened.