Effects of potassium peroxymonosulfate on disintegration of waste sludge and properties of extracellular polymeric substances

被引：57
作者：
Niu, Tianhao [1 ]
Zhou, Zhen [1 ]
Ren, Weichao [1 ]
Jiang, Lu-Man [1 ]
Li, Bingyue [1 ]
Wei, Haijuan [2 ]
Li, Jing [2 ]
Wang, Luochun [1 ]
机构：
[1] Shanghai Univ Elect Power, Coll Environm & Chem Engn, Shanghai 200090, Peoples R China
[2] Shanghai Chentou Wastewater Treatment Co Ltd, Shanghai 201203, Peoples R China
来源：
INTERNATIONAL BIODETERIORATION & BIODEGRADATION | 2016年 / 106卷
基金：
中国国家自然科学基金;
关键词：
Sludge disintegration; Peroxymonosulfate; Extracellular polymeric substances (EPS); Excitation-emission matrix; Parallel factor analysis; DISSOLVED ORGANIC-MATTER; FE(II)-ACTIVATED PERSULFATE OXIDATION; EXCESS ACTIVATED-SLUDGE; SEWAGE-SLUDGE; PHYSICOCHEMICAL PROPERTIES; FLUORESCENCE EXCITATION; REGIONAL-INTEGRATION; PRETREATMENT; HYDROLYSIS; REDUCTION;
D O I：
10.1016/j.ibiod.2015.10.021
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Effects of peroxymonosulfate (PMS) oxidation on disintegration degree (DD) and extracellular polymeric substances (EPS) properties of waste activated sludge were investigated. A combined approach of fractionation procedure and parallel factor (PARAFAC) analysis was applied to characterize EPS of sludge. Results indicated that PMS oxidation effectively broke sludge particles, resulting in DD in total nitrogen of 39.8% at 10 mg PMS (g SS)(-1). After PMS treatment, EPS increased significantly and mostly transferred to slime layer rather than loosely bound EPS (LB-EPS), and the ratio of slime to tightly bound EPS was correlated significantly with PMS dosage. With increasing PMS dosage, polysaccharides in EPS increased, while proteins in EPS and DNA in slime EPS increased firstly and then decreased. PARAFAC analysis of excitation-emission matrix spectra showed that tryptophan-like substances in both slime and LB-EPS were greatly influenced by PMS oxidation, and humic-like fluorophores in slime EPS were positively correlated with PMS dosage. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：170 / 177
页数：8
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