Solids settling curves : Wastewater solids data can aid design of urban runoff controls

Determining solids settling characteristics of urban runoff is useful in selecting cost-effective storage or treatment technologies to remove particulate solids. For example, if settling column analysis reveals only small amounts of particles above 0.1 cm/s velocities in wastewater treatment plant i...

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Bibliographic Details
Published in:Water environment & technology 1996, Vol.8 (4), p.27-33
Main Authors: PISANO, W. C, BROMBACH, H
Format: Magazinearticle
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Other wastewaters
Pollution
Wastewaters
Water treatment and pollution
Online Access:Get full text
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Summary:Determining solids settling characteristics of urban runoff is useful in selecting cost-effective storage or treatment technologies to remove particulate solids. For example, if settling column analysis reveals only small amounts of particles above 0.1 cm/s velocities in wastewater treatment plant influent, then high-rate vortex solids separators probably would not be the best technology for their removal. During the last 15 years, planning and design of combined sewer overflow (CSO) and stormwater high-rate treatment facilities in the United States has included many "sewer solids" settling velocity characterizations. Little has been done to summarize the results of these characterizations and document methodological approaches. Existing information, including settling column methods and solids settling curves for various wastes, is presented here, along with global estimates of median settling velocities and results of recent German research.
ISSN:1044-9493
1938-193X