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Extended-life water softening system, apparatus and method

A technology for softening water and water flow, which is applied in descaling and water softening, chemical instruments and methods, separation methods, etc. It can solve problems such as maintenance costs, reduce scale and dirt, improve performance, and prolong working life.

Inactive Publication Date: 2008-07-16
CARGILL INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, ion exchange softeners require frequent replacement of the sodium salt when the ion exchange resin is regenerated or refilled, creating maintenance costs associated with purchasing the salt

Method used

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  • Extended-life water softening system, apparatus and method
  • Extended-life water softening system, apparatus and method
  • Extended-life water softening system, apparatus and method

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Embodiment Construction

[0029] The following description of the invention is intended to illustrate various embodiments of the invention. Likewise, the specific transformations described below should not be construed as limiting the scope of the present invention. For those skilled in the art, without departing from the scope of the present invention, many different equivalent forms, changes and transformations can be adopted, therefore, it should be considered that these equivalent specific implementation methods also belong to the protection scope of the present invention .

[0030] A specific embodiment of the present invention provides an apparatus and method for softening water, and more particularly, an apparatus and method for softening water without increasing the number of ions in a wastewater stream. The present embodiment provides methods and systems for extending the working life of nanofilter elements in softening systems, and methods and systems for improving the performance of softeni...

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PUM

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Abstract

An apparatus and methods for softening water is disclosed. In particular, an apparatus and method for softening water without the addition of ions the wastewater stream is disclosed. The apparatus generally includes at least one nanofiltration filter element configured and arranged to receive an input flow of hard water, discharge an output flow of permeate water comprising a portion of the input flow, and discharge an output flow of non-permeate water comprising a portion of the input flow. The nanofiltration filter element typically has an average pore size that permits the passage of water and monovalent ions but substantially prevents the passage of divalent ions.

Description

[0001] related reference [0001] This application claims priority to US Provisional Application No. 60 / 698,652, filed July 12, 2005, which is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates to methods and systems for water treatment. In particular, the present invention relates to methods and systems for softening drinking water, and to methods and systems for extending the working life of water softening systems; more particularly, the present invention relates to removing ions from drinking water with lower Method and system for water loss. Background technique [0003] Water that contains high concentrations of calcium and magnesium ions is called "hard water" because these two ions can combine with other ions or compounds to form hard, undesired scale. Millions of households use hard water supplies, especially those that use groundwater, for example, from residential wells or as part of their municipal water sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/02B01D61/12
CPCB01D2317/022B01D61/027B01D61/12C02F1/442B01D2321/162C02F1/001B01D65/08C02F1/283B01D2321/2083B01D61/022C02F5/00B01D61/0271B01D35/00B82Y30/00
Inventor 希威帕勒莱·S·莫瑞巴拉克里希纳·N·S.·库马尔
Owner CARGILL INC
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