CPC在膨润土处理含p-硝基苯酚废水中的增强效应

Enhanced effect of cetyl pyridinium chloride in bentonites treatment of waste water containing p-nitrophenol.

选用氯代十六烷基吡啶(CPC)和p-硝基苯酚为目标化合物,试验比较了CPC+膨润土直接混合体系和CPC改性有机膨润土对含p-硝基苯酚废水的吸附效果.结果表明,与CPC改性土相比,用相应浓度的CPC+膨润土混合直接处理含p-硝基苯酚废水更为有效,可使p-硝基苯酚的去除率提高2倍以上(45%～98%),并可以节约处理成本且基本不增加表面活性剂二次污染.最经济适宜的CPC投加量与膨润土阳离子交换容量(CEC)相当.

The sorption effect of “CPC(cetyl pyridinium chloride)+bentonite direct”mixture system and CPC modified bentonite on waste water containing p-nitrophenol were tested and compared selecting CPC and p-nitrophenol as objective compounds. Compared with CPC modified bentonite, CPC+bentonite mixture of relevant concentration was more effective in direct treating waster water containing p-nitrophenol, and economized the cost of treatment; and the secondarypollution of surface active agent CPC was not increase basically. The removal rates of p-nitrophenol could beenhanced more than two times (from 45% to 98%) by CPC +bentonite mixture, and the most economical dosage of CPC corresponded to cation-exchange capacity (CEC) of bentonite.