生物处理焦化废水的Fenton氧化与混凝协同作用研究

[Study on Fenton oxidation cooperated with coagulation of biologically treated coking wastewater].

作者信息

Zuo Chen-Yan, He Miao, Zhang Peng-Yi, Huang Xia, Zhao Wen-Tao

机构信息

State Key Joint Laboratory of Environment Simulation and Pollution Control, Department of Environmental Science and Engineering Tsinghua University, Beijing 100084, China.

出版信息

Huan Jing Ke Xue. 2006 Nov;27(11):2201-5.

PMID:17326426

Abstract

The method of Fenton oxidation cooperated with coagulation for biologically treated coking wastewater was conducted. Based on both of the removal performance and the operating costs, optimal reaction condition was proposed. Operating at H2O2 concentration 220 mg/L, Fe2+ concentration 180 mg/L, PAM concentration 4.5 mg/L, reaction time 0.5h and pH = 7, about 44.5% of COD was removed and chroma reached 35. In addition, through analyzing of the changes of molecular weight distribution and constitute of organic compounds in effluent, the pollutant transformation rule was put forward. The result shows that the effluent treated by Fenton oxidation cooperated with coagulation can reach the wastewater secondary discharge standard, and the operation costs are acceptable. This implies that the technique of Fenton oxidation cooperated with coagulation has promising in practice.

摘要

采用芬顿氧化与混凝相结合的方法处理生物处理后的焦化废水。基于去除效果和运行成本，提出了最佳反应条件。在H2O2浓度220mg/L、Fe2+浓度180mg/L、PAM浓度4.5mg/L、反应时间0.5h和pH = 7的条件下运行，COD去除率约为44.5%，色度达到35。此外，通过分析出水有机化合物分子量分布和组成的变化，提出了污染物转化规律。结果表明，芬顿氧化与混凝联合处理后的出水可达到废水二级排放标准，运行成本可以接受。这意味着芬顿氧化与混凝相结合的技术在实际应用中具有广阔前景。