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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/746

Title: Investigation into alternative sludge conditioning prior to dewatering
Authors: Smollen, M
Kafaar, A
Keywords: Dewatering
Domestic refuses
Issue Date: 1997
Publisher: Pergamon-Elsevier Science Ltd
Citation: Smollen, M and Kafaar, A. 1997. Investigation into alternative sludge conditioning prior to dewatering. Water Science and Technology, vol. 36(11), pp 115-119
Abstract: The principal objective of this work is to provide a more effective alternative for sludge conditioning prior to mechanical dewatering. The common use of polyelectrolytes often results in the anal cake solids concentration not sufficiently high for the sludge to be beneficially reused or safely disposed. The pyrolysed domestic refuse (char) was used to increase the structural strength and permeability of biological sludges in order to increase final cake solids concentration. The laboratory experiments have proven that the mixture of char and a small quantity of polyelectrolyte (0.5 to 1kg per ton of dry solids), used as a conditioner prior to centrifugation and filtration tests, produced cake solids concentration superior to that obtained by using polyelectrolyte on its own. Laboratory dewatering by filtration with admixture of char and polymer resulted in cake solids concentration of 30 and above 40 per cent.
Description: Copyright: 1997 Pergamon-Elsevier Science Ltd
URI: http://hdl.handle.net/10204/746
ISSN: 0273-1223
Appears in Collections:Pollution and waste
Environmental management
Water resources and human health
General science, engineering & technology

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