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    Flexible design and operation of multi-stage reverse osmosis desalination process for producing different grades of water with maintenance and cleaning opportunity

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    Publication date
    2022-06
    Author
    Al-Obaidi, Mudhar A.A.R.
    Rasn, K.H.
    Aladhwani, S.H.
    Kadhom, M.
    Mujtaba, Iqbal M.
    Keyword
    Seawater desalination
    Reverse osmosis
    Sensitivity analysis
    Optimisation
    Different grades of water
    Rights
    © 2022 The Author(s). Published by Elsevier Ltd on behalf of Institution of Chemical Engineers. CC_BY_4.0.
    Peer-Reviewed
    Yes
    Open Access status
    openAccess
    
    Metadata
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    Abstract
    The use of Reverse Osmosis (RO) process in seawater desalination to provide high-quality drinking water is progressively increased compared to thermal technologies. In this paper, multistage spiral wound RO desalination process is considered. Each stage consists of several pressure vessels (PVs) organised in parallel with membrane modules in each PV being organised in series. This allows disconnecting a set of PVs and membrane modules depending on the requirement of cleaning and maintenance. While this flexibility offers the opportunity of generating several RO configurations, we presented only four such configurations of the RO system and analysed them via simulation and optimisation. Production of different grades of water catering different needs of a city is also considered for each of these configurations. The optimisation has resulted in the optimal operating conditions, which maximises the water productivity and minimises the specific energy consumption of the proposed configurations for a given water grade in terms of salinity. For instance, the results indicate that the proposed RO networks can produce drinking water of 500 ppm salinity with a minimum specific energy consumption of 3.755 kWh/m3. The strategy offers the production of different grades of water without plant shutdown while maintaining the membrane modules throughout the year.
    URI
    http://hdl.handle.net/10454/18932
    Version
    Published version
    Citation
    Al-Obaidi MA, Rasn KH, Aladhwani SH et al (2022) Flexible design and operation of multi-stage reverse osmosis desalination process for producing different grades of water with maintenance and cleaning opportunity. Chemical Engineering Research and Design. 182: 525-543.
    Link to publisher’s version
    https://doi.org/10.1016/j.cherd.2022.04.028
    Type
    Article
    Collections
    Engineering and Informatics Publications

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