水合二氧化锰对模拟染料的脱色作用研究

通过二氧化锰对罗丹明B、萘酚绿B、酸性络兰K等染料在不同pH值、温度、吸附时间、药品投加量等单因素条件下的脱色效果，设计正交试验，得出染料废水脱色的最佳工艺条件以及各种因素对脱色率的影响程度，结果显示影响脱色率的主次因素次序为pH值〉药剂投加量〉吸附时间〉吸附温度。同时通过对紫外光谱的研究．分析出二氧化锰对染料废水的基本脱色机理。印染废水是一类针对于生物降解的特殊有机废水，处理量大，治理困难，且多数染料为三致物质。对于控制废水的污染，保护人类健康具有重要的现实意义，同时对开发和研究新型废水处理药剂具有一定的实际价值。

Study on Decolorization of Dyeing Wastewater by Hydrated Manganese Dioxide

This paper conducted an orthogonal experiment by comparing the bleaching effects of manganese dioxide on rhoda- mine B, naphthol green B, acid chromeb blue K, etc. at different pH, temperature, adsorption time, drug dosage and other sin- gle factor conditions. The optimum conditions for dyeing wastewater and a variety of influencing factors were concluded. The influ- encing degree on decolorization rate in descending order is pH value 〉 pharmaceutical dosage 〉 adsorption time 〉 adsorption tem- perature. Through the ultraviolet spectrum, the basic declorization mechanism of manganese dioxide was analyzed. Dyeing wastewater is targeted at special biodegradable organic wastewater. It is difficult to treat and most of the dyes have three kinds of substances. The control of wastewater pollution is of important significance for human health protection. The development and re- search of new wastewater treatment agents have practical value.