臭氧-高铁酸钾联合氧化处理苯酚废水研究

Research on ozone-potassium ferrate combined oxidation treatment for the phenol wastewater

采用臭氧-高铁酸钾联合氧化处理苯酚废水,与单独使用臭氧或高铁酸钾氧化处理苯酚废水进行了对比。结果表明,单独使用臭氧氧化处理苯酚废水最佳的反应条件是:废水温度20℃,废水溶液的pH值为9,臭氧通入时间为25 min,此时苯酚去除率为89.6%。臭氧-高铁酸钾联合氧化处理苯酚废水时,最佳反应条件是:高铁酸钾投加量为0.8 g/L,废水温度20℃,废水溶液的pH值为9,反应时间为25 min,此时苯酚去除率为98.6%。臭氧-高铁酸钾联合氧化处理苯酚废水比单独使用臭氧或高铁酸钾氧化处理苯酚废水有更好的效果。

The oxidation treatment of phenol wastewater by ozone-potassium ferrate combined was compared with that by ozone or potassium ferrate alone.The results showed that under the condition that the ozone alone treatment for the phenol wastewater the optimal reaction conditions were as follows:when the wastewater temperature was 20℃,the pH value of wastewater solution was 9,and ozone admission time was 25 min,the phenol removal rate was 89.6%.Under the condition that the ozone-potassium ferrate combined oxidation treatment for the phenol wastewater the optimal reaction conditions were as follows:when the dosage of potassium ferrate was 0.8 g/L,the temperature of wastewater was 20℃,the pH value of wastewater solution was 9,and the reaction time was 25 min,the phenol removal rate was 98.6%.The combined oxidation treatment of phenol wastewater with ozone-potassium ferrate has better effect than that of phenol wastewater by ozone or potassium ferrate alone.