Results 141 to 150 of about 412 (178)

Effect of Ultrasound on Dewaterability of Sewage Sludge

Japanese Journal of Applied Physics, 2003
In this study, we investigate the effect of ultrasound on the dewaterability of sewage sludge. The investigation involves laboratory experiments, which were conducted under a broad range of conditions, including energy levels of ultrasonic waves, treatment time, and pH.
Young-Uk Kim, Byoung-Il Kim
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Physicochemical pretreatment and dewaterability of septage

2001
In this study, chemical treatability of septa-e was investigated. The septage, taken from the equalization tank of an existing septa-e treatment plant, was coagulated by different chemicals such as alum, alum plus polyelectrolite (PE) and lime plus PE in varying dosages. After coagulation-flocculation and sedimentation TSS, COD and total phosphorus (TP)
Akça, Lütfi, Sevimli, Mehmet Faik, Alp, Kadir, Demir, A., Çitil, Elif Tuğçe   +4 more
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Dewaterability of alum and ferric coagulation sludges

Journal AWWA, 1998
Ferric sulfate sludges demonstrated superior dewaterability over sludges formed by coagulation with aluminum.Tighter regulations governing stream discharge of coagulation sludge from the primary sedimentation process prompted the University of Iowa Water Treatment Plant to consider sludge‐handling options.
Phillip L. Thompson, Wayne L. Paulson
openaire   +1 more source

Comparative Investigation of Parameters for Determining the Dewaterability of Activated Sludge

Water Environment Research, 2011
This paper compared four parameters evaluating the dewaterability of sludge—capillary suction time (CST), specific resistance to filtration (SRF), bound water content, and dry solids content in the centrifuged sludge cake of the different sludge flocs from seven full‐scale wastewater treatment plants.
Ge, Peng, Fenxia, Ye, Ying, Li
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Effects of ultrasonic disintegration on sludge microbial activity and dewaterability

Journal of Hazardous Materials, 2009
Ultrasonic treatment can disintegrate sludge, enhance microbial activity and improve sludge dewaterability at different energy inputs. To find their relationship, the three phenomena during ultrasonic treatment were investigated synchronously, and an experimental model was established to describe the process of ultrasonic sludge disintegration ...
Li, Huan, Jin, Yiying, Rasool Bux, Mahar, Wang, Zhiyu, Nie, Yongfeng   +4 more
openaire   +2 more sources

Effect of proteins, polysaccharides, and particle sizes on sludge dewaterability

Journal of Environmental Sciences, 2009
Four batch experiments of hydrolysis and acidification were carried out to investigate the distributions of proteins (PN) and polysaccharides (PS) in the sludge, the PN/PS ratio, the particle sizes, and their relationship with sludge dewaterability (as determined by capillary suction time, CST).
Liming, Shao, Peipei, He, Guanghui, Yu, Pinjing, He   +3 more
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Effects of explosive explosion shockwave pretreatment on sludge dewaterability

Bioresource Technology, 2012
The potential benefits and mechanism of explosive explosion shockwave pretreatment on sludge dewatering treatments were investigated in this study. Water content of sludge cake after centrifugation was used to evaluate sludge dewaterability. Particle size, viscosity, turbidity, and micrograph were determined to explain the observed changes in the ...
Dayong, Chen, Jun, Yang
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Dewaterability characteristics of sludge conditioned with surfactants pretreatment by electrolysis

Bioresource Technology, 2011
The potential benefits of electrolysis-conditioned sludge dewaterability treatments with surfactants were investigated in this study. Capillary suction time (CST) and specific resistance of filtration (SRF) were used to evaluate the sludge dewaterability.
Haiping, Yuan, Nanwen, Zhu, Fanyong, Song   +2 more
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Ion exchange and dewaterability of clay sludges

International Journal of Mineral Processing, 1980
Abstract Two clay gel systems, a sample of settled oil sands clay tailings and a montmorillonite gel, were effectively dewatered by conversion to calcium forms by ion exchange, followed by freezing and thawing in the case of the montmorillonite gel and by either centrifugation or freezing and thawing in the case of the oil sands slime.
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Struvite formation for enhanced dewaterability of digested wastewater sludge

Environmental Technology, 2013
One of the main advantages of controlled struvite formation in digested sludge is an improvement in dewaterability of the digested sludge, which eventually leads to lower volumes of dewatered sludge that need to be transported. The effects of the control parameters for struvite formation, magnesium concentration and pH, on digested sludge ...
B J C, Bergmans, A M, Veltman, M C M, van Loosdrecht, J B, van Lier, L C, Rietveld   +4 more
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