南京大学学报（自然科学版）Issue(4)：399-404,6.DOI:10.13232/j.cnki.jnju.2014.04.003
Fenton氧化与树脂吸附组合工艺对化工废水的深度处理研究
Advanced treatment of chemical industrial wastewater by combination of Fenton oxidation and resin adsorption
摘要
Abstract
Chemical industrial wastewater treated by biochemical treatment is difficult to meet discharge standards due to its complex and refractory components.Thus advanced treatment of chemical industrial wastewater is important.Nonetheless,single treatment method after biochemical treatment is not sufficient.This work investigated the combination of optimized Fenton oxidation and magnetic hyper-crosslinked resin adsorption for the advanced treatment of the biochemical effluent of chemical industrial wastewater.Results showed that 62% of chemical oxygen demand(COD)was removed after Fenton treatment under the optimized conditions(4 mmol·L-1 FeSO4 , 8 mmol·L-1 H2 O2 at pH 5 with the contact time of 90 min)for a biochemical effluent with the COD value of 145.5 mg·L-1 .However,the dissolved organic matter in Fenton effluent was still at a high concentration.This Fenton effluent was better treated by hyper-crosslinked resin modified with anion exchange functional groups,which can be explained by the electrostatic interaction between resin and small molecular organic acid generated during Fenton ox-idation.The removal rate of UV254 and COD were 53% and 59%,respectively,by the optimized resin(GMA-5)with a strong base exchange capacity of 0.89 mmol·g-1 and a specific surface area of 668 m2·g-1 .GMA-5 could be reused with high adsorption capacity after regeneration.The combination of Fenton oxidation and magnetic resin adsorption was proved to be a feasible method for the advanced treatment of chemical industrial wastewater with removal rates of both UV254 and COD higher than 75%.The COD values after this combination method were lower than 40 mg·L-1 .关键词
Fenton氧化/磁性树脂/化工废水/深度处理Key words
Fenton oxidation/magnetic resin/chemical industrial wastewater/advanced treatment引用本文复制引用
周伟伟,金晶,王梦乔,李权,周庆,双陈冬..Fenton氧化与树脂吸附组合工艺对化工废水的深度处理研究[J].南京大学学报（自然科学版）,2014,(4):399-404,6.基金项目
国家自然科学基金(51308283),江苏省产学研联合创新资金(BY2012155,BY2013061) （51308283）
