强化混凝法去除腈纶废水中COD的机理研究  

Research on the mechanism of enhanced coagulation method for the removal of COD from acrylic fiber wastewater

作　　者：程爱华[1] 李杰[2] 王亚娥[2] Cheng Aihua;Li Jie;Wang Yae(School of Geological and Environment,Xi＇ an University of Science and Technology,X i＇ an 710054,China;School of Environmental and Municipal Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]西安科技大学地质与环境学院,陕西西安710054 [2]兰州交通大学环境与市政工程学院,甘肃兰州730070

出　　处：《工业水处理》2018年第7期37-39,45,共4页Industrial Water Treatment

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07201-005);陕西省工业攻关计划项目(2013GY2-06)

摘　　要：进行了强化混凝法去除腈纶废水中COD的研究。结果表明,铁碳微电解预氧化可提高混凝处理效果。通过对分子质量分布、Zeta电位及核磁共振波谱的测定发现,铁碳微电解的氧化作用可导致大分子有机物降解为小分子有机物,小分子有机物矿化,因此提高了分子质量>50 ku和<3 ku的有机物去除率;微电解产生的Fe2+有电性中和作用,使Zeta电位降低,强化混凝效果;微电解的氧化作用主要破坏酯类和醚类结构。The research on the enhanced coagulation method for the removal of COD from acrylic fiber wastewater has been implemented. The results show that iron-carbon micro-electrolysis pre-oxidization can improve the coagulation treatment effect. It is found through molecular mass distribution,Zeta potential and nuclear magnetic resonance spectrum determination that the oxidation effect of iron-carbon micro-electrolysis can cause macro-molecular organic substances to be degraded into micro-molecular organic substances and the mineralization of micro-molecular organic substances. Therefore,molecular mass 〉50 ku and〈 3 ku of the removal rate of organic substances is improved. The micro-electrolysis produced Fe2 ＋has electrical neutralization effect,making Zeta potential lowered and coagulation effect enhanced. The oxidation effect of micro-electrolysis can mainly destroy the structures of esters and ethers.

关 键 词：铁碳微电解 混凝 腈纶废水 COD 

分 类 号：X703.1[环境科学与工程—环境工程]