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Modeling bacterial growth in drinking water : effect of nutrients

journal contribution
posted on 2004-05-01, 00:00 authored by Veeriah Jegatheesan, G Kastl, I Fisher, J Chandy, M Angles
This article presents a model of growth of naturally occurring heterotrophic bacteria in the bulk water phase in the absence of disinfectant. The model considers growth with carbon, phosphorus, and nitrogen balance, death and lysis of bacteria, and conversion of less biodegradable organic carbon to assimilable organic carbon. Experimental data from two raw and two treated waters were used to test the model. The model describes the increase of live and dead bacterial cells in the water phase, and its output closely matches the experimental data. Such a model has the ability to characterize water nutrient status as well as to predict behavior of indigenous heterotrophic bacteria. The ability to predict bacterial population dynamics with respect to nutrients is beneficial for water treatment optimization. The model, based on microbiological measurements, helps to characterize treated water quality and project performance in terms of water quality into a distribution system.

History

Journal

American water works association journal

Volume

96

Issue

5

Pagination

129 - 141

Publisher

American Water Works Association

Location

Denver, Colo.

ISSN

0003-150X

eISSN

1551-8833

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal; C Journal article

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