铝钛柱撑改性膨润土处理两种模拟废水的实验研究

以钠基膨润土为原料制备了铝钛无机柱撑、铝钛有机柱撑改性膨润土，确定了改性膨润土的最佳铝钛比和铝土比，并将其应用于模拟废水、化学实验室废水的处理。与原土进行比较，探讨了用量、pH值、搅拌时间等对COD去除率、色度去除率、浊度去除率的影响，通过正交实验对实验条件进行了优化。结果表明：有机柱撑改性膨润土、无机柱撑改性膨润土对废水的处理效果均明显好于原土，对废水色度、浊度的去除率均大于93％；对废水COD的去除效果，有机柱撑改性膨润土比无机柱撑改性膨润土有较大提高，去除率最高达66．31％，结果令人满意。

An experimental study of synthesis and application of Al-Ti pillared montmorillonite

A series of modified montmorillonites were synthesized from Na-montmorillonite, which included Al-Ti-inorganic montmorillonite and Al-Ti-organic montmorillonite. The optimum Al-Ti and Al-montmorillonite radios were determined. Modified montmorillonites were utilized to treat imitative wastewater and chemical laboratory wastewater and Na-montmorillonite. The effects of optimum conditions such as Al-Ti proportion, pH value of wastewater, throwing amounts of Al-Ti modified montmorillonites and stirring time were investigated. The experimental conditions were optimized with the orthogonal experiment. The results show that the capacity of inorganic montmorillonite and organic montmorillonite is obviously better than that of original montmorillonite in water treatment. The removal rates of colority and turbidity are over 93%. The removal rates of COD are over 66.31% by organic montmorillonite. The result is satisfactory.