However, the regeneration wastewaters could be separately collected and potentially reused in several processes such as facility cleanings and cotton fabric dyeing process where high salinity process water is a necessity.
Although regeneration wastewaters have high salinity contents due to the usage of sodium chloride (NaCl) salts as resin regenerants,
hey are relatively clean in terms of other parameters such as TOC, turbidity, TN, color, and sulfur species. Therefore,
by reuse of regeneration wastewaters both water consumption and wastewater generation could be reduced.