紫外光下壳聚糖和粉煤灰降解二甲酚橙废水的性能比较

THE PROPERTIES COMPARISON OF CHITOSAN AND FLY ASH FOR TREATMENT THE WASTEWATER OF XYLENOL ORANGE UNDER THE FUNCTION OF ULTRAVIOLET LIGHTS

在紫外光的作用下,分别用壳聚糖和粉煤灰对二甲酚橙废水进行处理,比较了两者的处理能力,讨论了投加量、降解时间以及温度对脱色效果的影响。得出结果是:最佳投加量均为0.325 g/L,最佳作用时间为110-120 min,最佳作用温度为60℃。壳聚糖降解废水的能力优于粉煤灰。并且对絮凝剂处理废水的机理进行分析,紫外光照对染料起催化降解作用,壳聚糖和粉煤灰起到絮凝作用,两者综合作用的结果使二甲酚橙废水处理效率达到95%以上。

Under the function of ul traviolet lights,the wastewater of xylenol orang was treatmented by chitosan and fly ash,and the treatment ability of them was compared.The influence factors included the additive amount of flocculants,degradation time and temperature were studied.The following results were concluded： the best amount of chitosan and fly ash were 0.325g/L,the best degradation time was 110min-120 min,and the optimal temperature is 60℃.Chitosan＇s ability to treatment of the wastewater is better than fly ash＇s.Moreover,the mechanism of treatment waste water was analysed,ultraviolet lights played the role of catalysis degrading the wastewater,chitosan or fly ash only played the role of flocculation.And the effect of treatment reaches more than 95% under both catalysis and flocculation functions.