Dewatering behavior of sewage screenings

► In this study we examine the dewatering behavior of sewage screenings. ► Dewatering by different solid pressures is investigated. ► Flow-through resistance of screenings at different solid pressures is evaluated. Screenings from municipal sewage treatment plants have increased in importance in rec...

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Bibliographic Details
Published in:Waste management (Elmsford) 2013-04, Vol.33 (4), p.907-914
Main Authors: Gregor, H., Rupp, W., Janoske, U., Kuhn, M.
Format: Article
Language:English
Subjects:
Applied sciences
Dewatering
Exact sciences and technology
Flow-through resistance
General purification processes
General treatment and storage processes
Models, Theoretical
Other wastes and particular components of wastes
Pollution
Pressure
Sewage - analysis
Sewerage works: sewers, sewage treatment plants, outfalls
Wash press
Waste Management - standards
Waste-water treatment
Wastes
Wastewaters
Water - analysis
Water - standards
Water treatment and pollution
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Summary:► In this study we examine the dewatering behavior of sewage screenings. ► Dewatering by different solid pressures is investigated. ► Flow-through resistance of screenings at different solid pressures is evaluated. Screenings from municipal sewage treatment plants have increased in importance in recent years, particularly in Germany, where laws prohibit depositing of screenings in landfill. This paper presents basic investigations of sewage screenings, especially the structure and dewatering behavior. Two standard experiments are conducted. First, the relationship between pressure and water content is determined. Secondly the flow resistance as a function of pressure is evaluated. The results help to derive simulation models in order to understand how the material behaves inside a wash press.
ISSN:0956-053X
1879-2456
DOI:10.1016/j.wasman.2012.11.016