The Application of Settling Velocity as a Parameters for Characterising Wastewater Solids

During a research program in the UK in 1992, grab samples were collected from the inlets to 15 sewage-treatment works, and the samples were analyzed to determine whether size influenced pollutant distribution within the settling-velocity curve. Individual chemical constituents of the samples were st...

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Bibliographic Details
Published in:Water science and technology 1998-01, Vol.37 (1), p.45-45
Main Authors: Hedges, Peter D, Becker, Fiona A, Smisson, Robert PM
Format: Article
Language:English
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Summary:During a research program in the UK in 1992, grab samples were collected from the inlets to 15 sewage-treatment works, and the samples were analyzed to determine whether size influenced pollutant distribution within the settling-velocity curve. Individual chemical constituents of the samples were studied in terms of their specific settling-velocity fractions. Results showed that for COD, total Kjeldahl nitrogen, and phosphorus, the residue at the end of the tests contained the greatest pollutant load. The maximum quantity of these constituents that could be removed by settling ranged 50 60%. Similar distribution patterns were observed for the metals evaluated, except for lead and mercury, which were more evenly distributed.
ISSN:0273-1223