基于分子量分布的石化污水厂出水溶解性有机物性质研究  

Properties of Soluble Organic Materials in Effluent of a Petrochemical Wastewater Treatment Plant based on Molecular Weight Distribution

作　　者：徐敏[1,2] 吴昌永[2] 周岳溪[2] 张胜[1] 高祯[1,2] 孙青亮[2,3] 

机构地区：[1]河北工程大学城市建设学院,河北邯郸056038 [2]中国环境科学研究院水污染控制技术研究中心,北京100012 [3]北京化工大学化学工程学院,北京100029

出　　处：《环境工程技术学报》2012年第6期468-472,共5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(2008ZX07207-004)

摘　　要：采用超滤膜法对某石化综合污水厂二级出水进行了分级,结合TOC、UV254和三维荧光光谱分析,对不同分子量区间中的溶解性有机物的所占比例、物质特性和成分进行了研究。结果表明:污水厂二级出水中溶解性有机物分子量小于1kDa的有机物所占比例最高,其DOC占原水DOC的92.7%。分子量为5和10kDa的两种组分芳香构造化程度较高。三维荧光光谱分析表明,分子量大于1kDa的溶解性有机物主要含有蛋白质类和腐殖质类物质,其中色氨酸类芳香族蛋白质所占比例较高。The biological effluent in a petrochemical wastewater treatment plant （WWTP） was classified by ultra_filtration membrane separation. The material characteristics, composition and amounts of dissolved organic fractions in different molecular weight ranges were investigated by measuring TOC, UV254 and three-dimensional fluorescence spectrum. The results showed that organics on the fraction of molecular weight less than 1 kDa had the largest ratio in total organics of the biological effluent in the wastewater treatment plant, and the DOC of this fraction was about 92.7% of the total DOC. The aromatic structure was rich in 5 kDa and 10 kDa molecular weight components. Three-dimensional fluorescence spectrum analysis showed that dissolved organics on the fraction of molecular weight higher than 1 kDa tryptophan was the dominant protein.

关 键 词：石化废水 分子量分布 溶解性有机物 超滤膜分离 

分 类 号：X703.1[环境科学与工程—环境工程]