As water-intensive industries such as specialty manufacturing, power generation and mining continue to locate in relatively arid and water-constrained geographies, they are faced with water supply and wastewater disposal issues that are becoming increasingly complex and expensive. The disposal of the high-salt waste produced from RO, called reject (or concentrate), is a challenge due to the lack of naturally occurring surface waters in which to discharge, or limitations on disposal to sewers because treated effluent is used for landscape irrigation or other non-potable applications.
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