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Dynamic simulation of multicomponent reaction transport in water distribution systems

Munavalli, GR and Kumar, Mohan MS (2004) Dynamic simulation of multicomponent reaction transport in water distribution systems. In: Water Research, 38 (8). pp. 1971-1988.

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Given the presence of nutrients, regrowth of bacteria within a distribution system is possible. The bacterial growth phenomena, which can be studied by developing a multicomponent (substrate, biomass and disinfectant) reaction transport model, is governed by its relationship with the substrate (organic carbon) and disinfectant (chlorine). The multicomponent reaction transport model developed in the present study utilizes the simpli.ed expressions for the basic processes (in bulk .ow and at pipe wall) such as bacterial growth andd ecay, attachment to andd etachment from the surface, substrate utilization and disinfectant action involved in the model. The usefulness of the model is further enhancedby the incorporation of an expression for bulk reaction parameter relating it with the organic carbon. The model is validated and applied to study the sensitive behavior of the components using a hypothetical network. The developed model is able to simulate the biodegradable organic carbon threshold inaccordance with the values reported in the literature. The spreadof contaminant intruded into the system at any location can also be simulated by the model. The multicomponent model developed is useful for water supply authorities in identifying the locations with high substrate concentrations, bacterial growth andlower chlorine residuals.

Item Type: Journal Article
Publication: Water Research
Publisher: Elsevier
Additional Information: The copyright belongs to Elsevier.
Keywords: Attachment;Bacterial growth;Biomass;Detachment;Distribution system;Dynamic;Multicomponent
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 17 May 2006
Last Modified: 19 Sep 2010 04:26
URI: http://eprints.iisc.ac.in/id/eprint/6710

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