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壳聚糖负载膨润土处理高浊度废水的效果

Ecology and Environmental Sciences(2009)

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Abstract
以天然膨润土为原料,壳聚糖为改性剂,采用微波改性技术制备了壳聚糖负载膨润土,应用于高浊度废水的处理。通过正交试验确定了废水处理工艺各种影响因素的最佳条件。比较了负载土、原土、壳聚糖的处理效果,结果表明:负载土对高浊度废水的去浊效果明显好于原土、壳聚糖;对于浊度为9250~9480NTU的废水,经30min自由沉降后,在投土量为4.0g·L-1、投土粒度为0.150mm、搅拌速度为100r·min-1、搅拌时间为10min的条件下,废水剩余浊度为6.0~7.0NTU,浊度去除率高达99.9%。出水水质满足《再生水作循环冷却水水质》的水质要求。
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Key words
bentonite,chitosan,high turbidity wastewater,effluent turbidity,orthogonal experiment
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