摘要
从多方面优化了废纸制浆废水的光催化降解条件。结果表明,在photo/H_2O_2/FeSO_4体系中,Fe^(2+)催化分解H_2O_2和光分解H_2O_2之间存在着协同效应,处理效果显著。在[Fe(Ⅱ)]100mg/L,H_2O_21000 mg/L,pH值3.0和35℃的光照条件下,废纸制浆废水经过60min的处理,TOC去除率65%。增加光强及让废水和空气有效接触均可提高光催化效果,但无需动力曝气。FeSO_4光催化体系的效果较FeCl_2体系的好,三价铁盐光催化体系去除废水TO C的顺序为:Fe(NO_3)_3>Fe_2(SO_4)_3>FeCl_3。采用光-Fenton工艺处理废水的成本约为3.8元/t。
The conditions of photo-catalytic process for treatment of wastepaper pulping effluent were optimized. It was proved that the Fe^2＋ and H2O2 have synergistic effect on organic compounds degradation in photo/H2O2/FeSO4 system, and the treatment result is effective. Up to 65% TOC removal is obtained in just 60 rain of treatment with 100 mgFe/L of FeSO4 and 1500 mg/L of H202 at pH 3.0 and 35 ℃. Irradiation intensity plays an important role in increasing the TOC removal. Oxygen is of advantage for dechlorination, while aeration is unnecessary. FeSO4 photo- catalytic system has better efficiency for TOC removal than FeCl2 photo-catalytic system. The order of ferric salts photo-catalytic system for TOC removal is： Fe（NO3）3 〉 Fe2（SO4）3 〉 FeCl3. The cost of treatment of wastepaper pulping effluent by photo-Fenton process is about 3.8 Yuan/t, so further study is necessary for improving the efficiency and decreasing the cost.
出处
《中国造纸》
CAS
北大核心
2008年第9期31-34,共4页
China Pulp & Paper
关键词
光催化
光-Fenton工艺
废纸制浆废水
废水处理
photo-catalysis
photo-Fenton process
wastepaper pulping effluents
wastewater treatment
pulp and paper industry
