膨润土吸附性能及在废水脱色处理中的应用

摘要

介绍了膨润土的分子特点、物理化学性质及其作为吸附剂的优点,探讨了膨润土的吸附机理,综述国内外对膨润土在废水脱色处理中的应用研究进展,分析了膨润土吸附效果的影响因素(包括初始pH、废水浓度、吸附温度、投加量),吸附污泥的再生研究现状.在此基础上指出膨润土吸附废水脱色处理技术需要进一步研究的问题和发展的方向.%This paper introduces the molecular characteristics,physical and chemical properties of benton-ite as adsorbent and its advantages,discusses the adsorption mechanism of bentonite,application of ben-tonite in wastewater decolorization. The research progress of the application of bentonite in wastewater treatment at home and abroad was reviewed. The factors affecting bentonite are analyzed,such as:initial pH,concentration of wastewater and the adsorption temperature,the dosage. Research status on the regen-eration of adsorption sludge. On this basis,the author points out the problems and development direction of the technology of wastewater treatment.