摘要
研究了微电解-Fenton法预处理PTA废水的工艺,试验结果表明,微电解的最佳条件为pH4.0,反应时间30min;Fenton氧化的最佳条件是[H2O2]=0.6g·L-1,pH3.0,反应时间120min;经微电解-Fenton氧化组合处理后,PTA废水TOC总去除率超过70%。色谱分析结果证明,对苯二甲酸被部分氧化成苯甲酸,而且苯甲酸等有机物均有不同程度的降解,改善了废水的生化性,有利于废水后续生化处理。
The technique combining micro-electrolysis with Fenton oxidation was used to pretreat the PTA wastewater. Promising experimental results showed that the total removal rate of TOC could exceed 70% in the following optimum condition： pH of 3.0, reaction time 30min by micro-electrolysis and [H2O2] =0.6g·L^-1, pH3.0, reaction time 120 min by Fenton reagent oxidation. Chromatographic analysis data proved that terephthalic acid, benzoic acid and p-toluic acid, were degraded alter oxidation treatment in different degree, terephthalic acid was partially and selectively oxidized to benzoic acid,and the biodegradability ofwastewater had been greatly improved.
出处
《水处理技术》
CAS
CSCD
北大核心
2008年第8期71-74,共4页
Technology of Water Treatment
基金
国家高技术研究发展计划(863)项目(2006AA02Z211)
江苏省自然科学基金项目(BK2006181
BK2007188)
江苏省环保厅科技项目(2007020)
