Trihalomethane precursor removal using ion exchange emulsions
First Claim
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1. A process for removing trihalomethane precursors from water containing said precursors which comprises treating the water, at a rate of from about 1 to about 25 milligrams of resin per liter of water, with a fine-particle-size anion exchange resin having an equilibrium parameter of Ke =6×
- 105 cm3 /g or greater, a kinetic parameter of Kk =6 sec-1 or greater, and a combined value of Ke /105 +Kk of about 13 to about 22, and subsequently removing the resin from the water.
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Abstract
To avoid formation of toxic trihalomethanes in drinking waters disinfected with halogens, these waters are treated with fine-particle-size ion exchange resin particles, optionally in the presence of a metal salt coagulant, to remove the trihalomethane precursors prior to halogenation.
31 Citations
15 Claims
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1. A process for removing trihalomethane precursors from water containing said precursors which comprises treating the water, at a rate of from about 1 to about 25 milligrams of resin per liter of water, with a fine-particle-size anion exchange resin having an equilibrium parameter of Ke =6×
- 105 cm3 /g or greater, a kinetic parameter of Kk =6 sec-1 or greater, and a combined value of Ke /105 +Kk of about 13 to about 22, and subsequently removing the resin from the water.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
Specification