摘要
随着我国水环境形式的日益严峻以及污水排放标准的提高,传统的化工废水二级处理工艺已经不能满足废水中污染物的去除要求。在查阅相关化工废水处理技术文献的基础上,采用芬顿和臭氧氧化技术对某化工厂生化处理出水进行深度处理研究。研究发现,芬顿最佳反应条件为p H为3,Fe2+投加量为200mg/L,过氧化氢投加量为50mg/L,反应时间为2h,此条件下TOC的去除率可以达到48%;臭氧氧化技术对TOC的去除率随着臭氧投加量的增加而升高。两者相较而言,相同TOC去除率条件下芬顿氧化技术成本更低。
With the increasingly severe water situation in China and rising discharge standard, the conventional chemical wastewater advanced treatment can hardly meet the need of pollutants removal. On the basic of the literature of some relevant chemical wastewater treatment technologies, this paper introduced the research on the application of Fenton and ozone oxidation in the treatment of chemical wastewater from a chemical wastewater treatment plant. The experimental results showed that the optimal reaction conditions for Fenton oxidation process were： when pH was 3, reaction time was 2h, Fe^2＋ dosage was 200mg/L and hydrogen peroxide dosage was 50mg/L. Under this condition, the TOC removal efficiency can attain 48%. For the ozone oxidation process, the TOC removal rate increases with the increasing ozone dosage. Through comparison, Fenton oxidation process had a relatively low cost for the same TOC removal efficiency.
出处
《四川环境》
2015年第4期23-26,共4页
Sichuan Environment
关键词
化工废水
高级氧化法
臭氧氧化
芬顿氧化
Chemical wastewater
advanced oxidation process
ozonation
Fenton oxidation
