Recycling of wood chips and wheat dregs for sludge processing

A Buchner filtration study was conducted to investigate the effect on sludge dewatering of adding organic waste solids (wood chips or wheat dregs) to sludge after chemical preconditioning (with ferric chloride or alum). Increasing the dose of wood chips or wheat dregs enhanced sludge filtration perf...

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Bibliographic Details
Published in:Bioresource technology 2001, Vol.76 (2), p.161-163
Main Authors: Lin, Ying-Feng, Jing, Shuh-Ren, Lee, Der-Yuan
Format: Article
Language:English
Subjects:
Biodegradation, Environmental
Biological and medical sciences
Biological treatment of sewage sludges and wastes
Bioreactors
Biotechnology
Buchner filtration
Conditioning
Environment and pollution
Fundamental and applied biological sciences. Psychology
Heating value
Hot Temperature
Industrial applications and implications. Economical aspects
Sewage
Sludge processing
Triticum
Waste Disposal, Fluid
Wheat dregs
Wood
Wood chips
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Summary:A Buchner filtration study was conducted to investigate the effect on sludge dewatering of adding organic waste solids (wood chips or wheat dregs) to sludge after chemical preconditioning (with ferric chloride or alum). Increasing the dose of wood chips or wheat dregs enhanced sludge filtration performance and increased the energy content of the filter cake, but did not consistently increase the total filtrate removed. The additional filtrate removal was found to balance the inert solids load only when the chemical preconditioner used did not result in sufficient coagulation of the sludge and the skeleton builder dose was low (â©˝90%). Accordingly, various dose ranges of wood chips and wheat dregs are suggested for different sludge management schemes.
ISSN:0960-8524
1873-2976
DOI:10.1016/S0960-8524(00)00098-5