Modelling the fate of faecal indicators in a coastal basin

Water Research
S M KashefipourR A Falconer

Abstract

The paper describes a modelling study of near-shore coastal waters, undertaken to assess the impact of various bacterial input loads on the receiving waters in a coastal basin in the UK. Total and faecal coliforms, used as the indicators for bathing water quality under the European Union (EU) Bathing Water Directive, were numerically modelled using a 2D depth integrated hydro-environmental model. Details are given of the governing equations and solution methods used in the numerical model, together with a discussion of the recent development in faecal bacterial indicator modelling. Details are also given of a field data collection exercise, which involved initially collecting existing information on effluent input loads and followed by an intensive field survey. Using the water quality model, the mortality rate of the pathogen bacteria was investigated. Three methods were used to represent the relationship between the decay rate and the level of solar radiation including: a constant decay rate, day- and night-time decay rates and a solar radiation related time varying decay rate. Relatively close agreement between model predicted and measured total and faecal coliform concentration distributions were obtained for different day-...Continue Reading

Citations

Jul 3, 2013·Applied and Environmental Microbiology·Asja KorajkicValerie J Harwood
May 29, 2012·The Science of the Total Environment·Gabriela T Niño de GuzmánAlba Torrents
May 25, 2012·Marine Environmental Research·A MuhammetogluT Ozcan
Sep 20, 2015·Marine Pollution Bulletin·Guanghai GaoBinliang Lin
Apr 30, 2013·Marine Pollution Bulletin·Zeinab BedriBartholomew Masterson
Jan 1, 2008·Environmental Fluid Mechanics·David Kay, Roger Falconer

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