Abstract: Methyl orange,a typical azo dye,is used to prepare simulated wastewater as the research object,the affecting factors and mechanisms for treating with azo dye-containing wastewater by the advanced reduction process are studied via static experiments.The experimental results show that the removal rate of methyl orange sulfite can reach 67% after experiencing 80 min of reaction under ultraviolet irradiation,with sodium sulfite as reduction agent,pH=6,the concentration of raw water being 20 mg·L-1 and the dosage of reduction agent being 0.2 g·L-1.The experimental results show that sodium sulfite produces a strong reductive free radical-photoelectron,which is the main active substance in the degradation of methyl orange wastewater,fading azo bond to degrade azo dye under deoxidization conditions.This advanced reduction process can be used to treat azo dye-containing wastewater efficiently.
程爱华, 张佳宝. 高级还原技术处理偶氮染料废水的研究[J]. 现代化工, 2019, 39(4): 112-115.
CHENG Ai-hua, ZHANG Jia-bao. Research on treatment of azo dye wastewater by advanced reduction process. Modern Chemical Industry, 2019, 39(4): 112-115.
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