Correlation of physicochemical properties and sludge dewaterability under chemical conditioning using inorganic coagulants

doi:10.1016/J.BIORTECH.2013.06.126

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Correlation of physicochemical properties and sludge dewaterability under chemical conditioning using inorganic coagulants

Journal Article•DOI•

Correlation of physicochemical properties and sludge dewaterability under chemical conditioning using inorganic coagulants

Meiqing Niu¹, Weijun Zhang¹, Dongsheng Wang¹, Yu Chen, Ronglai Chen - Show less +1 more•Institutions (1)

Chinese Academy of Sciences¹

01 Sep 2013-Bioresource Technology (Elsevier)-Vol. 144, Iss: 1, pp 337-343

TL;DR: The floc size and D(F) were increased after chemical conditioning, indicating that larger and more compact floc formed, and sludge dewaterability correlated well with the change in concentration of soluble EPS, LB-Eps and TB-EPS, but not with KV, D(f), flocsize.

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About: This article is published in Bioresource Technology.The article was published on 2013-09-01 and is currently open access. It has received 242 citations till now.

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Journal Article•DOI•

Coagulation/flocculation in dewatering of sludge: A review.

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Hua Wei¹, Boqiang Gao¹, Jie Ren¹, Aimin Li¹, Hu Yang¹ - Show less +1 more•Institutions (1)

Nanjing University¹

15 Oct 2018-Water Research

TL;DR: Aiming at the complicated composition of sludge and its treatment difficulty, the prospects and technical developments of coagulation/flocculation in sludge dewatering are discussed.

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411 citations

Journal Article•DOI•

Critical review on dewatering of sewage sludge: Influential mechanism, conditioning technologies and implications to sludge re-utilizations.

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Boran Wu¹, Xiaohu Dai¹, Xiaoli Chai¹•Institutions (1)

Tongji University¹

01 Aug 2020-Water Research

TL;DR: It is proposed that a unified theory for sludge dewaterability improvement remains to be established, as how the molecular structures of sludge compositions affect the solid-water interface behavior requires to be deepened, which will further unravel the mechanism behind strong water-holding capacities of bio-flocs.

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304 citations

Journal Article•DOI•

Dewatering in biological wastewater treatment: A review.

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Morten Lykkegaard Christensen¹, Kristian Keiding¹, Per Halkjær Nielsen¹, Mads Koustrup Jørgensen¹•Institutions (1)

Aalborg University¹

01 Oct 2015-Water Research

TL;DR: The best dewaterability is observed for activated sludge that contains strong, compact flocs without single cells and dissolved extracellular polymeric substances.

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218 citations

Journal Article•DOI•

Influence of wastewater sludge treatment using combined peroxyacetic acid oxidation and inorganic coagulants re-flocculation on characteristics of extracellular polymeric substances (EPS).

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Weijun Zhang¹, Bingdi Cao², Dongsheng Wang¹, Dongsheng Wang², Teng Ma¹, Hua Xia¹, Dehong Yu³ - Show less +3 more•Institutions (3)

China University of Geosciences (Wuhan)¹, Chinese Academy of Sciences², Wuhan Institute of Technology³

01 Jan 2016-Water Research

TL;DR: It was found that sludge particles were effectively solubilized and protein-like substances were degraded into small molecules after PAA oxidation and combined oxidative lysis and chemical re-flocculation provide a novel solution for sludge treatment.

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197 citations

Cites background from "Correlation of physicochemical prop..."

...These can then be more easily separated from water (Niu et al., 2013; Zhang et al., 2014)....
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Journal Article•DOI•

Roles of iron species and pH optimization on sewage sludge conditioning with Fenton's reagent and lime

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Wenbo Yu¹, Jiakuan Yang¹, Yafei Shi¹, Jian Song¹, Yao Shi¹, Jun Xiao¹, Chao Li¹, Xinyu Xu¹, Shu He, Sha Liang¹, Xu Wu¹, Jingping Hu¹ - Show less +8 more•Institutions (1)

Huazhong University of Science and Technology¹

15 May 2016-Water Research

TL;DR: A two-step mechanism of Fenton oxidation and Fe(III) coagulation was proposed in sewage sludge conditioning, indicating that the coagulations by Fe(3+) species in Fenton reaction could play an important role, compared to traditional Fenton oxidisation effect on sludge Conditioning.

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195 citations

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References

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Book•

The Fractal Geometry of Nature

[...]

Benoit B. Mandelbrot

01 Jan 1982

TL;DR: This book is a blend of erudition, popularization, and exposition, and the illustrations include many superb examples of computer graphics that are works of art in their own right.

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Abstract: "...a blend of erudition (fascinating and sometimes obscure historical minutiae abound), popularization (mathematical rigor is relegated to appendices) and exposition (the reader need have little knowledge of the fields involved) ...and the illustrations include many superb examples of computer graphics that are works of art in their own right." Nature

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24,199 citations

Journal Article•DOI•

The Fractal Geometry of Nature

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Benoit B. Mandelbrot

01 Jul 1984

TL;DR: A blend of erudition (fascinating and sometimes obscure historical minutiae abound), popularization (mathematical rigor is relegated to appendices) and exposition (the reader need have little knowledge of the fields involved) is presented in this article.

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7,560 citations

"Correlation of physicochemical prop..." refers background in this paper

...Mandelbrot deduced that the compass dimension in 1982, which is available for the measurement of the DF with rough curve (Mandelbrot, 1982)....
[...]

Journal Article•DOI•

Influence of loosely bound extracellular polymeric substances (EPS) on the flocculation, sedimentation and dewaterability of activated sludge.

[...]

Xiao-yan Li¹, Shu-fang Yang¹•Institutions (1)

University of Hong Kong¹

01 Mar 2007-Water Research

TL;DR: Although EPS is essential to sludge floc formation, excessive EPS in the form of LB-EPS could weaken cell attachment and the floc structure, resulting in poor bioflocculation, greater cell erosion and retarded sludge-water separation.

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1,508 citations

"Correlation of physicochemical prop..." refers background in this paper

...…the loosely bound EPS (LB-EPS) which is diffused from the tightly bound EPS (TB-EPS) that surrounds the cells (Li and Yang, 2007; Poxon and Darby, 1997; Ramesh et al., 2006), and only the LB-EPS was related to the sludge dewaterability (Li et al., 2012; Li and Yang, 2007; Ramesh et al., 2006)....
[...]
...…that EPS has double layers including the loosely bound EPS (LB-EPS) which is diffused from the tightly bound EPS (TB-EPS) that surrounds the cells (Li and Yang, 2007; Poxon and Darby, 1997; Ramesh et al., 2006), and only the LB-EPS was related to the sludge dewaterability (Li et al., 2012; Li and…...
[...]
..., 2006), and only the LB-EPS was related to the sludge dewaterability (Li et al., 2012; Li and Yang, 2007; Ramesh et al., 2006)....
[...]
...It is found that EPS has double layers including the loosely bound EPS (LB-EPS) which is diffused from the tightly bound EPS (TB-EPS) that surrounds the cells (Li and Yang, 2007; Poxon and Darby, 1997; Ramesh et al., 2006), and only the LB-EPS was related to the sludge dewaterability (Li et al....
[...]

Journal Article•DOI•

Characterization of extracellular polymeric substances of aerobic and anaerobic sludge using three-dimensional excitation and emission matrix fluorescence spectroscopy.

[...]

Guo-Ping Sheng¹, Han-Qing Yu¹•Institutions (1)

University of Science and Technology of China¹

01 Mar 2006-Water Research

TL;DR: Three-dimensional excitation-emission matrix (EEM) fluorescence spectroscopy was applied to characterize the extracellular polymeric substances (EPS) extracted from aerobic and anaerobic sludge in wastewater treatment.

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627 citations

Journal Article•DOI•

Physico-chemical characteristics of full scale sewage sludges with implications to dewatering

[...]

Lene Haugaard Mikkelsen¹, Kristian Keiding¹•Institutions (1)

Aalborg University¹

01 May 2002-Water Research

TL;DR: Results indicated that the fraction of extracellular polymeric substances (EPS) in sludges was the most important parameter with respect to sludge structure, and polymer entanglement is a key factor to stable floc structure.

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474 citations

"Correlation of physicochemical prop..." refers background in this paper

...It was widely reported that the EPS impacted the sludge dewaterability (Jin et al., 2004; Mikkelsen and Keiding, 2002; Yang and Li, 2009; Poxon and Darby, 1997), but the precise role of EPS on dewaterability usually appeared ambiguous....
[...]