Mechanical sludge disintegration for the production of carbon source for biological nutrient removal.

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dc.contributor.authorKampas, Pantelis
dc.contributor.authorParsons, Simon A.
dc.contributor.authorPearce, P.
dc.contributor.authorLedoux, S.
dc.contributor.authorVale, P.
dc.contributor.authorChurchley, J.
dc.contributor.authorCartmell, Elise
dc.date.accessioned2008-02-19T14:38:40Z
dc.date.available2008-02-19T14:38:40Z
dc.date.issued2007-04
dc.description.abstractThe primary driver for a successful biological nutrient removal is the availability of suitable carbon source, mainly in the form of volatile fatty acids (VFA). Several methods have been examined to increase the amount of VFAs in wastewater. This study investigates the mechanism of mechanical disintegration of thickened surplus activated sludge by a deflaker technology for the production of organic matter. This equipment was able to increase the soluble carbon in terms of VFA and soluble chemical oxygen demand (SCOD) with the maximum concentration to be around 850 and 6530 mg l−1, for VFA and SCOD, respectively. The particle size was reduced from 65.5 to 9.3 μm after 15 min of disintegration with the simultaneous release of proteins (1550 mg l−1) and carbohydrates (307 mg l−1) indicating floc disruption and breakage. High performance size exclusion chromatography investigated the disintegrated sludge and confirmed that the deflaker was able to destroy the flocs releasing polymeric substances that are typically found outside of cells. When long disintegration times were applied (10 min or 9000 kJ kg−1 TS of specific energy) smaller molecular size materials were released to the liquid phase, which are considered to be found inside the cells indicating cell lysis.en_UK
dc.identifier.citationP. Kampas, S.A. Parsons, P. Pearce, S. Ledoux, P. Vale, J. Churchley and E. Cartmell, Mechanical sludge disintegration for the production of carbon source for biological nutrient removal, Water Research, Volume 41, Issue 8, April 2007, Pages 1734-1742.en_UK
dc.identifier.issn0043-1354
dc.identifier.urihttp://dx.doi.org/10.1016/j.watres.2006.12.044
dc.identifier.urihttp://hdl.handle.net/1826/2339
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.subjectActivated sludgeen_UK
dc.subjectBiological nutrient removalen_UK
dc.subjectCarbon sourceen_UK
dc.subjectCell lysisen_UK
dc.subjectMechanical disintegrationen_UK
dc.subjectParticle sizeen_UK
dc.subjectPolymersen_UK
dc.titleMechanical sludge disintegration for the production of carbon source for biological nutrient removal.en_UK
dc.typePostprinten_UK

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