Effects Of Polymer Conditioning On Alum Sludge Characteristics: A Review
Author(s)
Y.Q. Zhao, E.N. Papavasilopoulos, D.H. Bache & P.A. Mackinnon
Abstract
Effects of polymer conditioning on alum sludge
characteristics: a review
Y.Q. Zhao*, E.N. PapavasilopouW, D.H. Bache* & P.A.
Mackinnon*
' School of Civil Engineering, Queen's University Belfast, Northern
Ireland, UK
* 8A Loukianou St, Athens 106 75, Greece
* Department of Civil Engineering, University of Strathclyde, Glasgow,
UK
Abstract
This paper is concerned principally with summarizing recent information on the
effects of polymer conditioning on alum sludge characteristics. Alum sludge
refers to the by-product created during the treatment of raw waters using
aluminium sulphate as the coagulant. In spite of the limited published data,
evidence has shown that polymer dosing can lead to a shift towards: large size
aggregates; higher density and more compact floes; more compressible sludge
and an obvious change of sludge rheology properties as well as the bound water
content. Certain discrepancies in the effects of polymer on alum sludge
characteristics indicate the compl
Keywords
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