Fenton氧化和絮凝作用对干法腈纶聚合废水中有机物的去除  

Organics Removal by Oxidation and Flocculation during Fenton Treatment for Polymeric Wastewater in Dry-spun Acrylic Fiber Production

作　　者：涂响[1] 魏健[1,2] 李斌[1] 宋永会[1,2] 肖书虎[1] 

机构地区：[1]中国环境科学研究院城市水环境科技创新基地,北京100012 [2]北京师范大学水科学研究院,北京100875

出　　处：《环境工程技术学报》2014年第1期53-59,共7页Journal of Environmental Engineering Technology

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07202-002);中法国际合作项目(2010DFB90590-03);国家自然科学基金项目(21107103)

摘　　要：采用Fenton法预处理干法腈纶聚合废水,考察H2O2投加量、Fe2+投加量及pH对Fenton反应过程中氧化和絮凝作用去除废水有机物的影响。结果表明,在H2O2投加量为90 mmolL,Fe2+投加量为30 mmolL,初始pH为3.0的条件下,反应120 min后调节pH至6.0进行絮凝,废水中TOC总去除率可达55.6%,Fenton氧化和絮凝作用可实现较好的有机物去除效果。Fenton氧化后将pH调至8.0,有利于絮体的沉降,在实际应用中更加合理。三维荧光光谱(EEM)和荧光区域积分(FRI)发现,Fenton反应能够去除废水中大部分类蛋白易降解有机物,氧化作用对废水中类富里酸有机物的去除作用较小,该类物质主要通过絮凝作用去除。Fenton method was used for the pretreatment of polymeric wastewater in dry-spun acrylic fiber production. The effects of H2O2 dosage, Fe2＋ dosage, and pH on organics removal were evaluated during the oxidation and flocculation process. The results showed that the total TOC removal efficiency could reach 55.6%, and both oxidation and flocculation processes could achieve high organics removal, when operated under the conditions of H2O2 dosage 90.0 mmol/L, FeE＋ dosage 30.0 mmol/L, initial pH 3.0, reaction time 120 min and floceulation pH 6.0. The sedimentation of flocs could be advanced in practical application when the flocculation pH was 8.0. Excitation-emission matrix spectroscopy and fluorescence regional integration revealed that most of the protein-like degradable organics were removed during the Fenton process, and the oxidation could hardly remove the fulvic-like organics, which were mainly removed by the flocculation process.

关 键 词：干法腈纶 聚合废水 FENTON法 氧化 絮凝 有机物去除 

分 类 号：X703.1[环境科学与工程—环境工程]