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The effect of opera...
The effect of operational temperature on dewatering characteristics of digested sludge
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- Bouskova, Alzbeta (author)
- Lund University,Lunds universitet,Vattenförsörjnings- och avloppsteknik,Avdelningen för kemiteknik,Institutionen för processteknik och tillämpad biovetenskap,Institutioner vid LTH,Lunds Tekniska Högskola,Water and Environmental Engineering,Division of Chemical Engineering,Department of Process and Life Science Engineering,Departments at LTH,Faculty of Engineering, LTH
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Persson, E (author)
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- la Cour Jansen, Jes (author)
- Lund University,Lunds universitet,Avdelningen för kemiteknik,Institutionen för processteknik och tillämpad biovetenskap,Institutioner vid LTH,Lunds Tekniska Högskola,Division of Chemical Engineering,Department of Process and Life Science Engineering,Departments at LTH,Faculty of Engineering, LTH
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Dohanyos, M (author)
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(creator_code:org_t)
- 2006
- 2006
- English.
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In: Journal of Residuals Science and Technology. - 1544-8053. ; 3:1, s. 43-49
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Abstract
Subject headings
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- Dewatering properties and sludge structure of anaerobically digested sludge were studied in relation to an increasing operational temperature. Sludge samples were taken from 5 pilot-scale CSTR reactors treating municipal sewage sludge with working volume of 20 L and operating at 33, 35, 37, 39 and 55 degrees C, respectively. The main parameters of interest were capillary suction time (CST), concentration of extracellular polymeric substances (EPS), charge density of the extracted EPS, filterability (dry solids content after vacuum filtration), compactibility (dry solids content after pressing) and concentration of fine particles in the liquid phase (turbidity). Sludge from the reactor working at 55 degrees C (thermophilic) contained the most fine particles in the liquid phase, which remarkably deteriorated filterability of the sample, however when subjected to an external pressure, the sludge reached the highest dry matter content of the sludge cake. Sludge originating from the reactor working at 37 degrees C reached the best filtration properties.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Water Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Naturresursteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Engineering (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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