同济大学学报（自然科学版）2011，Vol.39Issue(4)：556-561,6.DOI:10.3969/j.issn.0253-374x.2011.04.016
水力停留时间对溶解性有机物特性的影响
Influence of Hydraulic Retention Time on Characteristics of Dissolved Organic Matter
摘要
Abstract
The influence of hydraulic retention time (thr) 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 show that the second peaks in GFC spectra of the effluent samples gradually move to the direction of the smaller molecular weight distribution. The molecular weight distribution becomes broader with the decreasing of thr.Meanwhile, molecular weight distribution of extracelhilar polymeric substances (EPS) in sludges is less affected by thr.The main fluorescent materials in raw water are high- and low-excitation wavelength tryptophan. However, the primary fluorescent substances in effluents are UV- and visible fulviclike. With the decrease of thr, high-excitation wavelength tryptophan occurs in effluents of No. 4, 5 experimental devices. It is also found that the center of this tryptophan peaks are red-shifted by 5 nm and 10 nm along the emission axis compared with the influent wastewater,respectively.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Key words
hydraulic retention time/ dissolved organic matter/ membrane bioreactor/ restaurant wastewater分类
资源环境引用本文复制引用
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):556-561,6.基金项目
上海市科委项目(08231200200:09DZl204200) （08231200200:09DZl204200）
