The Removal of Chlorinated Organics from Conventional Pulp and Paper Wastewater Treatment Systems

Removals of adsorbable organic halides (AOX) achieved by 8 full-scale wastewater treatment systems at pulp mills in North America were surveyed over a 2-year period. AOX removals averaged 46 per cent for activated sludge systems and 34 per cent for aerated stabilization systems studied. The best per...

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Bibliographic Details
Published in:Water science and technology 1992, Vol.26 (1-2), p.417-425
Main Authors: Bryant, C W, Avenell, J J, Barkley, W A, Thut, R N
Format: Article
Language:English
Subjects:
Activated sludge
Aeration
Basins
Bleaching
Bleaching wastes
Chlorination
Chlorine
Chlorine dioxide
Influents
Molecular weight
Peroxide
Plant removal
Pulp & paper industry
Pulp & paper mills
Pulp mill effluents
Removal
Sludge
Sludge treatment
Sulfite
Surveying
Wastewater
Wastewater treatment
Water treatment plants
Weight
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Summary:Removals of adsorbable organic halides (AOX) achieved by 8 full-scale wastewater treatment systems at pulp mills in North America were surveyed over a 2-year period. AOX removals averaged 46 per cent for activated sludge systems and 34 per cent for aerated stabilization systems studied. The best performance was recorded at a sulphite mill activated sludge system which consistently removed 53 per cent of total AOX and 62 per cent of low-molecular-weight AOX in bleaching wastewaters. In some cases, the use of oxygen and peroxide and chlorine dioxide substitution reduced influent AOX loadings, with little effect on treatment plant removal efficiency.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.1992.0421