Journal
MARINE ENVIRONMENTAL RESEARCH
Volume 55, Issue 5, Pages 385-408Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0141-1136(02)00289-1
Keywords
coastal water quality; total coliform; sewage per capita discharge; hydrodynamic model; advection dispersion model; adaptive quadtree mesh
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Sepetiba Bay is located at 23degrees S, 44degrees W in Rio de Janeiro State, Brazil. Water samples were taken at eight locations adjacent to the north shore of the. Bay, near to villages and towns without sewage treatment provision. The samples were analysed and total and faecal coliform concentrations determined. A hydrodynamic model of the Bay. was used together with a species dispersion model based on an adaptive quadtree mesh to predict faecal concentrations in the Bay. Effluent sources used in the model were defined using population data from census returns with flow and concentration values estimated using standard values recommended by the World Bank (WB) and the World Health Organisation (WHO). Sufficient agreement was obtained between the measured and predicted concentrations to support the use of WB and WHO summary statistics to estimate sources of sewage. (C) 2003 Elsevier Science Ltd. All rights reserved.
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