Enhanced dewaterability of waste activated sludge with Fe(II)-activated hypochlorite treatment

被引：37
作者：
Zhu, Xiaofei [1 ,2 ]
Yang, Qi [1 ,2 ]
Li, Xiaoming [1 ,2 ]
Zhong, Yu [3 ]
Wu, You [1 ,2 ]
Hou, Lihua [1 ,2 ]
Wei, Jing [1 ,2 ]
Zhang, Weixuan [1 ,2 ]
Liu, Yu [1 ,2 ]
Chen, Chongyu [1 ,2 ]
Wang, Dongbo [1 ,2 ]
机构：
[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China
[3] Hunan Res Acad Environm Sci, Key Lab Water Pollut Control Technol, Changsha 410004, Hunan, Peoples R China
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2018年 / 25卷 / 27期
基金：
中国国家自然科学基金;
关键词：
Waste activated sludge (WAS); Calcium hypochlorite; Dewaterability; Extracellular polymeric substance (EPS); Three-dimensional excitation-emission matrix (3D-EEM); Protein-like substances; EXTRACELLULAR POLYMERIC SUBSTANCES; FREE NITROUS-ACID; ZERO-VALENT IRON; SEWAGE-SLUDGE; ANAEROBIC-DIGESTION; HYDROGEN-PEROXIDE; ORGANIC-COMPOUNDS; FENTON OXIDATION; PRETREATMENT; PERSULFATE;
D O I：
10.1007/s11356-018-2829-x
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A novel method was explored to improve the waste-activated sludge (WAS) dewaterability using Fe(II) combined with calcium hypochlorite, and the possible mechanisms were investigated simultaneously. Capillary suction time (CST), specific resistance to filtration (SRF) of sludge, and water content (W-C) of dewatered sludge cake were selected as the factors to evaluate the sludge dewaterability. The maximum reduction of W-C (30.76%) was achieved under the optimal conditions of Ca(ClO)(2) 0.04 g/g total suspended solids (TSS), FeSO4 center dot 7H(2)O 0.097 g/g TSS, and pH 7.3, while the reduction of CST and SRF reached 91.24 and 99.47%, respectively. Three-dimensional excitation-emission matrix (3D-EEM) fluorescence spectroscopy of extracellular polymeric substances (EPSs) showed that sludge dewaterability was mainly related to the degradation of tryptophan and tyrosine protein-like substances in sludge EPS. Economic analysis suggested Fe(II) combined with calcium hypochlorite treatment had greater potential on enhancing WAS dewaterability compared with the traditional sludge treatment.
引用
收藏
页码：27628 / 27638
页数：11
相关论文
共 46 条
[1]  
APHA, 1995, STANDARD METHODS EXA, Vnineteenth
[2]   Protein and polysaccharide content of tightly and loosely bound extracellular polymeric substances and the development of a granular activated sludge floc [J].
Basuvaraj, Mahendran ;
Fein, Jared ;
Liss, Steven N. .
WATER RESEARCH, 2015, 82 :104-117
[3]   An overview of the application of Fenton oxidation to industrial wastewaters treatment [J].
Bautista, P. ;
Mohedano, A. F. ;
Casas, J. A. ;
Zazo, J. A. ;
Rodriguez, J. J. .
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2008, 83 (10) :1323-1338
[4]   Sodium hypochlorite as an alternative to hydrogen peroxide in Fenton process for industrial scale [J].
Behin, Jamshid ;
Akbari, Abbas ;
Mahmoudi, Mohsen ;
Khajeh, Mehdi .
WATER RESEARCH, 2017, 121 :120-128
[5]   Qualitative characterization of the protein fraction of exopolymeric substances (EPS) extracted with EDTA from sludge [J].
Bourven, Isabelle ;
Costa, Guy ;
Guibaud, Gilles .
BIORESOURCE TECHNOLOGY, 2012, 104 :486-496
[6]   New insights into biodrying mechanism associated with tryptophan and tyrosine degradations during sewage sludge biodrying [J].
Cai, Lu ;
Krafft, Thomas ;
Chen, Tong-Bin ;
Lv, Wen-Zhou ;
Gao, Ding ;
Zhang, Han-Yan .
BIORESOURCE TECHNOLOGY, 2017, 244 :132-141
[7]   FORMATION OF HYDROXYL RADICALS ON REACTION OF HYPOCHLOROUS ACID WITH FERROCYANIDE, A MODEL IRON(II) COMPLEX [J].
CANDEIAS, LP ;
STRATFORD, MRL ;
WARDMAN, P .
FREE RADICAL RESEARCH, 1994, 20 (04) :241-249
[8]   Fluorescence excitation - Emission matrix regional integration to quantify spectra for dissolved organic matter [J].
Chen, W ;
Westerhoff, P ;
Leenheer, JA ;
Booksh, K .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2003, 37 (24) :5701-5710
[9]   Enhancement of waste activated sludge dewaterability using calcium peroxide pre-oxidation and chemical re-flocculation [J].
Chen, Zhan ;
Zhang, Weijun ;
Wang, Dongsheng ;
Ma, Teng ;
Bai, Runying ;
Yu, Dezhong .
WATER RESEARCH, 2016, 103 :170-181
[10]   Evaluation of continuous mesophilic, thermophilic and temperature phased anaerobic digestion of microwaved activated sludge [J].
Coelho, Nuno Miguel Gabriel ;
Droste, Ronald L. ;
Kennedy, Kevin J. .
WATER RESEARCH, 2011, 45 (09) :2822-2834
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