摘要
臭氧氧化是深度处理的重要方法之一,主要依靠臭氧的强氧化作用降解COD。以印染产业集聚区某污水处理厂深度处理臭氧氧化工艺为例,分析pH值、双氧水催化、双氧水投加位点、单点和多点投加方式、分段投加比例等对臭氧氧化COD去除效果的影响。结果表明,pH值为弱酸性或者中性对臭氧氧化、双氧水催化臭氧氧化效果都没有明显影响,臭氧按照3∶1∶1的比例分段进行投加效果最优,采用双氧水进行催化可以一定程度提高臭氧氧化效率,双氧水投加位点设置在臭氧投加位点之前效果更好。
Ozone oxidation is one of the important methods of advanced treatment,mainly relying on the strong oxidation of ozone to degrade COD.Taking the advanced treatment ozone oxidation process of a sewage treatment plant in the printing and dyeing industry agglomeration area as an example,analysed the effect of pH,hydrogen peroxide catalysis,hydrogen peroxide dosing point,single-point and multi-point dosing and stepwise dosing ratios for COD removal by ozone oxidation.The results showed that the pH of weak acidity or neutrality has no obvious effect on ozone oxidation and hydrogen peroxide catalyzed ozone oxidation.The effect of adding ozone in stages according to the ratio of 3∶1∶1 is the best and can be improved to some extent with hydrogen peroxide catalysis.It is better to set the hydrogen peroxide dosing point before the ozone dosing point.
作者
茅楚兴
任烨
罗灿
谢未
蔡建峰
丁静
Mao Chuxing;Ren Ye;Luo Can;Xie Wei;Cai Jianfeng;Ding Jing(Shaoxing Keqiao Jiangbin Water Treatment Co.,Ltd.,Shaoxing 312072,China)
出处
《山东化工》
2023年第23期240-241,245,共3页
Shandong Chemical Industry
关键词
臭氧氧化
COD降解
双氧水催化
投加方式
分段投加比例
ozone oxidation
COD degradation
hydrogen peroxide catalysis
dosing method
fractional dosing ratio
