氧化法处理模拟含酚废水的实验研究

摘要

The chemical oxidation process for treatment of phenolic simulated wastewater was adopted in home-made reactor.The removal rates of phenol by KMnO_4,MnO_2 and Fenton reagent were studied.The results showed that the removal rate of phenol increased according to the increase of ventilation volume and oxidant content and gradually decreased with the increase of pH value;the optimal operating conditions of each oxidant were determined by experiments.The removal efficiency of Fenton reagent was the best by comparing the results of the tests.When the pH value is 6, n(H_2Ov2):n(Fe~(2+)) is 4:1 and the initial concentration of phenol is 1.5 mmol/L,the phenol removal efficiency reaches 97.67%.%采用化学氧化法在自制反应器中处理模拟含酚废水,就KMnO_4、MnO_2和Fenton试剂三种氧化剂对酚的去除效果进行了实验研究.实验表明,苯酚的去除率随通气量、氧化剂的投加量的增加而升高,随pH值的增大而明显下降;通过各自最佳操作条件对比得出,Fenton试剂的去除效果最佳.当溶液pH值为6,n(H_2O_2)∶n(Fe~(2+))=4∶1,Fe~(2+)的初始浓度为1.5 mmol/L,Fenton试剂对酚的去除率达到了97.67%.