| Modelling of coliform removal in 186 facultative and maturation ponds around the world. | |
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MedLine Citation:
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PMID: 16310239 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The paper presents a very extensive evaluation of the coliform decay in facultative and maturation ponds, based on data from 186 different ponds in the world. The ponds encompass a very wide diversity in terms of physical and operating conditions, covering most situations encountered in practice. The median values for the coliform removal efficiencies were 1.8 log units (98% removal) for primary facultative ponds, 1.0 log units for secondary facultative ponds (90% removal) and 1.2 log units (94% removal) for each maturation pond in the series. Two equations to be used for design purposes were derived for estimating the die-off coefficient K(b) (dispersed flow, 20 degrees C) in facultative and maturation ponds. The first equation led to a slightly better fitting with the observed logarithm of the effluent coliform concentrations (R2 = 0.874), and related K(b) with the pond detention time t and depth H (K(b) = 0.682 H(-1.286) t(-0.103)). The other equation also led to a satisfactory fitting (R2 = 0.845), but was slightly simpler, depending only on the pond depth (K(b) = 0.549 H(-1.456)). |
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Authors:
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Marcos Von Sperling |
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Publication Detail:
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Type: Comparative Study; Journal Article Date: 2005-11-28 |
Journal Detail:
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Title: Water research Volume: 39 ISSN: 0043-1354 ISO Abbreviation: Water Res. Publication Date: 2005 Dec |
Date Detail:
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Created Date: 2005-12-12 Completed Date: 2006-04-07 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0105072 Medline TA: Water Res Country: England |
Other Details:
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Languages: eng Pagination: 5261-73 Citation Subset: IM |
Affiliation:
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Department of Sanitary and Environmental Engineering, Federal University of Minas Gerais, Av. Contorno 842-7 andar, 30110-060, Belo Horizonte, Brazil. marcos@desa.ufmg.br |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Enterobacteriaceae
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isolation & purification* Models, Theoretical* Waste Disposal, Fluid / methods* Water Pollutants |
| Chemical | |
Reg. No./Substance:
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0/Water Pollutants |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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