珠江水中有机物分子量分布及其去除研究  

Molecular weight distribution and removal of dissolved organic matters in Pearl River water

作　　者：叶挺进[1,2] 何君[1] 刘超斌[1] 刘伟[1] 梁咏梅[1] 

机构地区：[1]中山大学环境科学与工程学院,广东广州510275 [2]佛山市水业集团有限公司,广东佛山528000

出　　处：《供水技术》2010年第3期12-16,共5页Water Technology

基　　金：广东省产学研专项资金项目(2009B090300369);佛山市禅城区区产学研专项资金项目(2009B1042)

摘　　要：采用超滤膜分级方法考察了常规混凝、高锰酸钾和粉末活性炭预处理等工艺对珠江水中各级分子量有机物的去除效果。结果表明,珠江水中有机物以分子量小于1kDa的小分子有机物为主,各级分子量有机物TOC和UV254具有良好的相关性。常规混凝工艺主要去除大分子有机物,且去除率随分子量的减小而降低。高锰酸钾预处理能够全面提高各级分子量有机物的去除效果;粉末活性炭主要吸附中小分子有机物,对各级分子量有机物的去除效果与常规混凝成互补。A uhrafiltration was applied to determine the distribution of molecular weight （MW） of dissolved organic matters in Pearl River water. The removal of the organic matters by conventional coagulation, potassium permanganate and powdered active carbon （PAC） pretreatment were investigated. The results showed that the low MW organics were the dominant organic matters in Pearl River water. Good correlationships between TOC and UV254 in each MW range of all water samples were confirmed. The removal of dissolved organic matters by conventional coagulation gradually declined with the decrease of organic MW. Potassium permanganate pretreatment enhanced the removal of organics with various MW; while higher removal of low and medium MW organic matters was obtained by PAC adsorption, which was a proposed supplementary process for conventional coagulation.

关 键 词：溶解性有机物 分子量 分布 粉末活性炭 高锰酸钾预处理 

分 类 号：TU991.2[建筑科学—市政工程]