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    Simultaneous model of chlorine dosing and decay in drinking water distribution system and model predictive control application

    Access Status
    Fulltext not available
    Authors
    Muslim, Abrar
    Tade, Moses
    Li, Qui
    Date
    2008
    Type
    Journal Article
    
    Metadata
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    Citation
    Muslim, Abrar and Li, Qin and Tade, Moses. 2008. Simultaneous model of chlorine dosing and decay in drinking water distribution system and model predictive control application. Asia-Pacific Journal of Chemical Engineering. 3 (6): pp. 613-621.
    DOI
    10.1002/apj.132
    Faculty
    School of Engineering
    Faculty of Science and Engineering
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/46931
    Collection
    • Curtin Research Publications
    Abstract

    The most commonly applied active disinfectant in drinking water distribution system (DWDS) is free chlorine residual (FCR) in the form of hypochlorous acid and hypochlorite ion. The concentration of FCR decreases along the transport pipeline. Controlled replenishment of chlorine at various sites in DWDS is critical to maintain the FCR in the safe range of 0.2-0.6 ppm. This study proposed a multiple-input multiple-output (MIMO) model (developed in Simulink of Matlab 7.0.1) that simultaneously takes into account chlorine dosing and decay process with the considerations of process disturbances. The model is further implemented into a centralised model predictive control (CMPC) system. The advantages of our CMPC system in controlling multiple outputs are its robustness and short settling time, compared to the conventional process-data-based proportional integral (PI) control strategies. Moreover, the simplicity of this reactive-transport-model-based MIMO control system and the use of Matlab promise an easy adaptation to field test and plant implementation. It addresses an important need in water quality management, particularly for developing countries.

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