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US 7,404,898 B2Granted
Method and installation for the production of lime water from deionised water
AssigneeOtv SA
InventorsFranck Clausse, Philippe Marteil, Germain LeBouc, Frederic LeFort
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Abstract
A method of producing lime water comprising deionising dilution water by membrane filtration, distillation or an ion exchange resin and adding silicate ions to the deionised water. Thereafter, the deionised water treated with the silicate ions is mixed with milk of lime to form lime water. In one embodiment, the milk of lime and dilution water are mixed in a saturator where the silicate ions are introduced.
Claims13
A method of producing lime water and remineralizing water comprising:
- a. deionising dilution water by membrane filtration, distillation or an ion exchange resin;
- b. mixing silicate ions with the deionised dilution water at a silicate ion injection site to produce a silicate ion-water mixture;
- c. after mixing silicate ions with the deionised dilution water and downstream from the silicate ion injection site, mixing milk of lime with the silicate ion-water mixture in a saturator to form lime water;
- d. precipitating solids in the lime water, wherein the precipitation is caused by the addition of silicate ions and milk of lime to the deionised dilution water;
- e. settling precipitated solids to form sludge in the saturator;
- f. discharging sludge formed in the saturator;
- and
- g. remineralizing water to be treated by mixing carbon dioxide and the lime water into the water to be treated.
5 more elements
Dependencies are inferred from the claim text.