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水力停留时间对溶解性有机物特性的影响
引用本文:吴志超,何磊,王志伟.水力停留时间对溶解性有机物特性的影响[J].同济大学学报(自然科学版),2011,39(4):556-561.
作者姓名:吴志超  何磊  王志伟
作者单位:同济大学污染控制与资源化研究国家重点实验室,上海,200092
基金项目:上海市科委项目(08231200200;09DZ1204200)
摘    要:借助凝胶过滤色谱(GFC)和三维荧光光谱,研究膜-生物反应器处理餐饮废水中水力停留时间thr对溶解性有机物特性的影响.研究表明,随着thr的减少,膜出水GFC图谱中的第二个峰值不断向小分子量方向迁移,且分子量分布范围逐渐变宽;thr对污泥胞外聚合物的分子量分布影响较小;进水中主要荧光物质是高、低激发波长类色氨酸,出水中主要荧光物质是紫外区和可见区类富里酸,且随着thr的减少,4号和5号装置的膜出水中出现高激发波长类色氨酸,同时峰值的发射波长较进水分别红移5 nm和10 nm.

关 键 词:水力停留时间  溶解性有机物  膜-生物反应器  餐饮废水
收稿时间:3/7/2010 12:00:00 AM
修稿时间:2/19/2011 1:35:26 PM

Influence of Hydraulic Retention Time on Characteristics of Dissolved Organic Matter
WU Zhichao,HE Lei and WANG Zhiwei.Influence of Hydraulic Retention Time on Characteristics of Dissolved Organic Matter[J].Journal of Tongji University(Natural Science),2011,39(4):556-561.
Authors:WU Zhichao  HE Lei and WANG Zhiwei
Institution:Tongji University,Tongji University,Tongji University
Abstract:The influence of hydraulic retention time (HRT) on characteristics of dissolved organic matter (DOM) in membrane bioreactor used for restaurant wastewater treatment was studied through gel filtration chromatography (GFC) and excitation-emission matrix fluorescence spectra analysis,. Results showed that the second peaks in GFC spectra of the effluent samples gradually moved to the direction of the smaller molecular weight distribution. The molecular weight distribution became broader with the decrease of HRT. Meanwhile, molecular weight distribution of extracellular polymeric substances (EPS) in sludges was less affected by HRT. The main fluorescent materials in raw water were high- and low-excitation wavelength tryptophan. However, the primary fluorescent substances in effluents were UV- and visible fulvic-like. With the decrease of HRT, high-excitation wavelength tryptophan occurred in effluents of No. 4, 5 experimental devices. It was also found that the center of this tryptophan peaks were red-shifted by 5 nm and 10 nm along the emission axis compared with the influent wastewater, respectively.
Keywords:membrane bioreactor  restaurant wastewater  hydraulic retention time  dissolved organic matter
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