Method and apparatus for enriching silicates in drinking water

Abstract

The present invention relates to methods and apparatus for enriching drinking water with silicates. The present invention relates to a method for enriching drinking water with silicates comprising the steps of separating raw water via a reverse osmosis process into a permeate comprising demineralized raw water and mineral-enriched a retentate of feed water, mixing said permeate with a water glass solution comprising sodium silicate and / or potassium silicate, subjecting at least a portion of said mixture to an ion exchange process to reduce the concentration of sodium ions and / or potassium ions , and supplying at least a portion of the retentate to a mixture having a reduced concentration of sodium ions and / or potassium ions, thereby producing silicate-enriched drinking water. In addition, the invention relates to a plant for producing drinking water enriched in silicates.

Description

Technical field [0001] The present invention relates to a method for enriching silicates in drinking water and a device for producing silicate-rich drinking water. Background [0002] In view of the increased consumption of drinking water associated with the decline in water quality, among other things, it is now routine and often necessary to use various purification steps to treat raw water in the production of drinking water. In particular, the production of bottled drinking water is conventionally implemented by deminermining the raw water, for example, through reverse osmosis and then adding minerals. pH is usually regulated by adding an alkali or acid during mineralization or before reverse osmosis. [0003] This has the advantage of guaranteeing a constant quality of drinking water even with different raw water. In addition, drinking water may be particularly enriched with a variety of additives with beneficial properties for health such as mineral salts. The main mineral ...

AI Technical Summary

Problems solved by technology

[0008] Overall, the methods in this technical field have the disadvantage that drinking water with a rich silicate content can be produced economically in large quantities only with high-level equipment

Thus, the methods and devices known in the art have the disadvantage that they are disadvantageous from a cost point of view

However, water glass from sodium or potassium silicate has not been used in the commercial production of drinking water, since this is also associated with a high concentration of sodium and / or potassium in drinking water

This is undesirable from a health point of view and is also associated with deteriorated organoleptic properties, whereby in particular the natural organoleptic properties of drinking water are not preserved

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