Results 171 to 180 of about 1,916 (210)
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Enhancement of municipal sludge dewaterability by electrochemical pretreatment
Journal of Environmental Sciences, 2019Electrolysis is a promising technology to improve sludge dewaterability efficiently with negligible environmental impact. To intensify the electrolytic efficiency, the effect of electrolytes (NaCl, Na2SO4, NaNO3, and NaClO4) on electrolysis pretreatment of municipal sludge and its mechanisms was investigated using Ti/PbO2 electrodes.
Ke, Xiao +7 more
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Influence of microwave and ultrasound on sludge dewaterability
Advances in Intelligent Systems Research, 2014Sludge with large production is difficult to be dewatered without any pretreatment. Pretreatment with ultrasound and microwave can adjust the structure of sludge and change the water form, therefore increase the water content which could be dispelled easily.
Xinyue Li, Cuihong Zhou, Ying Ling
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Network strength and dewaterability of flocculated activated sludge
Water Research, 2002Works in literature proposed the use of the rheological properties of wastewater sludges as an index for conditioner assessment and control. We demonstrated in this work, on the contrary, that one could not justify the consistency of the commonly used rheological characteristics of the sewage sludge samples taken from the same site but at different ...
Yen, Pei-Shan +4 more
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Reversibility of the structure and dewaterability of anaerobic digested sludge
Journal of Environmental Sciences, 2016The reversibility of the structure and dewaterability of broken anaerobic digested sludge (ADS) is important to ensure the efficiency of sludge treatment or management processes. This study investigated the effect of continuous strong shear (CSS) and multipulse shear (MPS) on the zeta potential, size (median size, d50), mass fractal dimension (D(F ...
Yiqi, Sheng +5 more
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Enhanced sludge dewaterability using a bifunctional hybrid coagulant
Chemosphere, 2023The combination of coagulation and addition of skeleton builder is a popular pretreatment method to improve the dewaterability of sludge. In this study, a novel bifunctional inorganic/organic hybrid coagulant (CS-Si@ATP) was designed and obtained by chemically coupling a cationic starch (CS) with a popular clay, that is, attapulgite (ATP), via a silane
Shaohang, Shen +7 more
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Effect of temperature on the dewaterability of hematite suspensions
International Journal of Mineral Processing, 2004Abstract Many industrial processes perform solid–liquid separation operations at elevated temperatures. One such example is the Bayer process, which is used to produce alumina from bauxite. During the thickening and washing of the process residue (red mud), the operational temperature decreases from around 110 to 35 °C, and thus an understanding of ...
J Hulston, R.G de Kretser, P.J Scales
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Effect of Ultrasound on Dewaterability of Sewage Sludge
Japanese Journal of Applied Physics, 2003In 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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Dewaterability of alum and ferric coagulation sludges
Journal AWWA, 1998Ferric 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
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Effects of ultrasonic disintegration on sludge microbial activity and dewaterability
Journal of Hazardous Materials, 2009Ultrasonic 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 +4 more
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Comparative Investigation of Parameters for Determining the Dewaterability of Activated Sludge
Water Environment Research, 2011This 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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