Water quality parameter estimation in a distribution system under dynamic state

Munavalli, GR and Kumar, Mohan MS (2005) Water quality parameter estimation in a distribution system under dynamic state. In: Water Research, 39 (18). pp. 4287-4298.

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Abstract

Chlorine maintenance in distribution systems is an issue for water suppliers. The complex pipe geometry in distribution systems, the dynamic flow conditions experienced within them, and the varied nature of chlorine's reactivity make it difficult to predict chlorine levels throughout a water system. Computer-based mathematical models of water quality transport and fate within distribution systems offer a promising tool for predicting chlorine in a cost-effective manner. Nevertheless, the use of water quality models can only be effective and reliable when both hydraulics and the mechanisms of chlorine dissipation within the water system are properly defined. Bulk water decay can be measured experimentally. However, wall reaction rates are more complex to determine and must be deduced from field measurement by comparison with simulation results. The simulation-optimization model presented in this paper provides an effective tool to simplify the chlorine decay model calibration process that is often tedious. The optimization tool is based on the weighted-least-squares method solved by Gauss-Newton technique. Application of the model onto a real-life system shows that quantity, quality and location of measurement nodes play an important role in estimation of parameters.

Item Type:	Journal Article
Publication:	Water Research
Publisher:	Elsevier Science Ltd
Additional Information:	Copyright for this article belongs to Elsevier.
Keywords:	Chlorine decay modeling;Distribution systems;Drinking water;Optimization tool;Wall reaction parameter
Department/Centre:	Division of Mechanical Sciences > Civil Engineering
Date Deposited:	22 Dec 2005
Last Modified:	19 Sep 2010 04:22
URI:	http://eprints.iisc.ac.in/id/eprint/4730

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