Patent ID: 8758720
Filing Date: 2014-06-24
Classification: B01D,C01B,C02F

Abstract:
1. A composition matter consisting essentially of water and dissolved solutes, (a) said composition of matter being the product water resulting from the treatment of a feedwater stream in a first reverse osmosis membrane separation unit that produces a product water stream low in solutes and a reject stream high in solutes; (b) wherein said process comprises: (c) said product water characterized in that has a pH greater than 9, and it comprises sodium (as ion), calcium (as ion) in an amount of less than 0.003 parts per million, and silica (as silica) in an amount of 0.46 parts per million or less, and wherein the ratio of sodium (as ions) to total dissolved solids (TDS) is about two thirds, or higher.