Journal
DESALINATION
Volume 520, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.desal.2021.115370
Keywords
Reverse osmosis; RO; Scaling; Salt formation; Potable water; RO concentrate line
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Research on reverse osmosis (RO) technology focuses on the relationship between RO membrane system performance and scale formation, but there is limited review on the detrimental effects of scale within concentrate lines on system performance and reliability. The importance of quality information is emphasized, and solutions to scaling issues are proposed.
Reverse osmosis (RO) is poised to be the primary membrane-based water desalination technology as the need for potable water increases. Current and prior research focuses on the implications of the RO membrane system performance as it pertains to scale; however, very few reviews of scale and its detrimental effects within the concentrate line that affect both system performance and reliability at pilot-scale are available. We analyzed peer-reviewed literature covering the most recent studies on scale characterization and mitigation strategies. Data gathered from a pilot-scale plant experiment conducted with an industrial collaborator were used to emphasize the importance of quality information on this topic. Published data, and data collected from the pilot plant were investigated and analyzed to determine the most significant scaling problems and methods of mitigation. Potential antiscalant alternatives to mitigate the complications caused by scale formation and fouling within RO systems, particularly in concentrate lines, were investigated.
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