Mortality rates of pathogen indicator microorganisms discharged from point and non-point sources in an urban area.
J Environ Sci (China)
; 22(6): 929-33, 2010.
Article
em En
| MEDLINE
| ID: mdl-20923108
ABSTRACT
This research measured the mortality rates of pathogen indicator microorganisms discharged from various point and non-point sources in an urban area. Water samples were collected from a domestic sewer, a combined sewer overflow, the effluent of a wastewater treatment plant, and an urban river. Mortality rates of indicator microorganisms in sediment of an urban river were also measured. Mortality rates of indicator microorganisms in domestic sewage, estimated by assuming first order kinetics at 20 degrees C were 0.197 day(-1), 0.234 day(-1), 0.258 day(-1) and 0.276 day(-1) for total coliform, fecal coliform, Escherichia coli, and fecal streptococci, respectively. Effects of temperature, sunlight irradiation and settlement on the mortality rate were measured. Results of this research can be used as input data for water quality modeling or can be used as design factors for treatment facilities.
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Base de dados:
MEDLINE
Assunto principal:
Microbiologia da Água
/
Poluentes da Água
/
Eliminação de Resíduos Líquidos
/
Enterobacteriaceae
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
J Environ Sci (China)
Assunto da revista:
SAUDE AMBIENTAL
Ano de publicação:
2010
Tipo de documento:
Article