改性沸石吸附废水中磷污染物的研究

采用改性沸石吸附废水中的磷污染物,经济高效无毒害,是一种优良的废水处理方法,对于解决磷污染问题具有重大的意义。采用4A沸石和改性4A沸石对含磷浓度为50 mg·L^-1的模拟废水进行吸附实验,研究了沸石用量、含磷浓度、反应温度、吸附时间以及pH对两种沸石吸附性能的影响。结果表明,两种沸石对磷的去除率都高达90%以上,并且改性4A沸石在沸石使用量较少,含磷浓度比较低,pH值比较高的情况下对磷的吸附效果比较好。

Research on the Phosphate Absorpted of Modified Zeolite in Wastewater

It was an economic, high efficiency and innocuous method with excellent performance to treat wastewater in which used the modified zeolite to adsorpt phosphate in wastewater. This experiment had a great significance on accounting for phosphate pollutant. Experiments were conducted on the phosphate absorbability of 4A zeolite and the modified 4A zeolite in simulated wastewater with phosphate concentration of 50mg · L^-1. The effects of the amount of zeolite, phosphate concentration, reaction temperature, adsorption time and pH on the phosphate absorbability of these two kinds of zeolites were studied. The experimental results showed that the phosphate removeal efficiency of two kinds of zeolites exceeded 90% and the modified 4A zeolite had a better adsorption in the condition of less zeolite,less phosphate concentration and higher pH.