| 摘要 |
A process for treatment of water via memhrane separation to remove hardness and nonhydroxide alkalinity by simultaneous removal in a weak acid cation exchange resin. The process includes ionization of sparingly ionizable componients, such as silica, by adjusting the pH up to about 10.5 or higher. Their separation by the membrane is significantly increased. The passage of boron, silica and TOC is reduced by a factor of ten or more. Recovery of 90% or higher is achievable with most brackish feedwaters, At hue substantial reduction in cleaning frequency is simultaneously achieved. The apparatus used lor the water treatment process includes reverse osmosis membrane (s) (30), mixed bed ion exchange unit (44, 46), micron filter (48), ultraviolet
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