改性沸石去除污染水体中磷的实验研究

Experiment on phosphate in wastewater body removed by modified zeolite

用沸石做载体,将六水氯化铁负载其上,进行除磷的实验研究。通过正交试验优化了改性工艺,在沸石与FeCl3.6H2O的质量比为8∶2,煅烧温度300℃,煅烧时间4 h时,去除效果最好。探讨了沸石用量、吸附时间、溶液的pH值、溶液初始浓度对改性沸石除磷效果的影响。实验表明:此吸附剂对于模拟含磷废水具有较好的去除性能,当模拟含磷废水的浓度为5 mg/L、时间2 h,用量为10 g/L,pH为7左右,其去除率达到了80%以上。本实验研究对于富营养化水体的治理具有一定的参考价值。

Using zeolite as carrier which is loaded on with ferric chloride , the paper carried out the ex- periment of removal phosphate. The orthogonal experiment was adopted to optimize the modification crafts. The best effect appears while zeolite and ferric trichloride hexahydrate （FeC13 · 6H20） mass ratio is 8： 2, a calcination temperature is 300 ℃ , a calcination time is 4 hours. The influence of zeolite quan- tity, contacting time, pH value of the solution, the initial concentration of the solution on removal effect was discussed. The absorbent has better removal ability to phosphate in water, the modified zeolite quali- ty is 10g/L, the adsorption time is 2 hours, pH value of the solution is about 7, the concentration of wastewater with phosphate is 5mg/L, the elimination rate reaches above 80%. The study has a certain reference value for the treatment of eutrophication water body.