A review of strategies for RO brine minimization in inland desalination plants

Rioyo, Javier and Aravinthan, Vasantha and Bundschuh, Jochen and Lynch, Mark (2017) A review of strategies for RO brine minimization in inland desalination plants. Desalination and Water Treatment, 90. pp. 110-123. ISSN 1944-3994

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Water scarcity in many inland areas is increasing the demand for new groundwater desalination plants.
Co-produced coal seam gas (CSG) water (or coal bed methane as known in the USA), which is mostly brackish, is extracted in huge quantities during CSG production and requires advanced treatment. Reverse osmosis (RO) is the leading technology applied in municipal desalination and for treating CSG water in Australia and in some locations in the USA. Antiscalants are often dosed during RO pretreatment to prevent membrane scaling. Recovery rates are limited by antiscalant efficacy and large volumes
of brine are frequently disposed of in evaporation ponds. The search for environmentally friendly methods
for RO brine minimization is considered as a key global issue. In this paper, differences between inland and seawater desalination are highlighted. The existing technologies for RO brine minimization and zero liquid discharge (ZLD) for inland desalination are reviewed. The efficacy and application of two scaling reduction technologies for RO brine minimization: (i) acid/antiscalant addition and (ii) ‘high pH precipitation treatment’ are compared. Finally, more complex ZLD and volume reduction systems, such as the high efficiency RO (HERO™) and the SAL-PROC™, are analyzed as well.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 17 Jan 2018 02:53
Last Modified: 08 May 2018 00:42
Uncontrolled Keywords: reverse osmosis in inland areas; brackish groundwater; coal seam gas water; brine minimization; zero liquid discharge
Fields of Research : 09 Engineering > 0907 Environmental Engineering > 090703 Environmental Technologies
Socio-Economic Objective: D Environment > 96 Environment > 9609 Land and Water Management > 960999 Land and Water Management of Environments not elsewhere classified
Identification Number or DOI: 10.5004/dwt.2017.21439
URI: http://eprints.usq.edu.au/id/eprint/33574

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