One-way cation exchange type water filtering and purifying system and method and water purifier

A cation exchange and cation exchange membrane technology, applied in ion exchange water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problems of high use cost of double-layer ion exchange membrane and increase the cost of replacing filter elements, etc. Achieve the effect of reducing replacement frequency, improving utilization rate, and high desalination efficiency

Pending Publication Date: 2020-06-05
GUANGDONG LIZI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the combined filter elements that treat anions and cations separately generally treat one kind of ion first and then another ion with different electrical properties. Only a single ion exchange is required, and the use cost of double-layer ion exchange membrane is too high, and The ion exchange filter element needs to be replaced after working for a certain period of time to maintain the normal water purification performance of the water purifier, and the double-layer ion exchange membrane increases the cost of replacing the filter element

Method used

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  • One-way cation exchange type water filtering and purifying system and method and water purifier
  • One-way cation exchange type water filtering and purifying system and method and water purifier

Examples

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Embodiment 1

[0062] A one-way cation exchange water filtration purification system, such as figure 1 and figure 2 As shown, a first cation exchange membrane 120 is provided between the cation exchange unit 110 and the anion exchange unit 210 of the ion exchange regeneration unit. Only the first cation exchange membrane 120 is disposed between the cation exchange unit 110 and the anion exchange unit 210 , so that hydrogen ions obtained after electrolysis can be unidirectionally transferred from the anion exchange unit 210 to the cation exchange unit 110 .

[0063] The ion exchange regeneration unit of this embodiment is provided with a desalination water circuit and a regeneration water circuit. The raw water is directly desalinated through the desalination circuit to generate pure water, and the regenerated water is electrolyzed through the regeneration water circuit to generate hydrogen ions and hydroxide ions, and the cation exchange unit 110 and the anion exchange unit 210 are ion-exc...

Embodiment 2

[0080] A one-way cation-exchange filtering water purification method, wherein the water filtering is purified by a one-way cation-exchange filtering water purification system, wherein only a first cation is arranged between the cation exchange unit and the anion exchange unit of the water filtering and purification system exchange membrane.

[0081] In the desalination process of this embodiment, the regeneration water circuit is closed, no electrolytic voltage is applied, and the raw water is discharged as pure water after passing through the first desalting circuit and the second desalting circuit of the desalting circuit.

[0082] Specifically, in the first desalination circuit, the salt positive ions to be desalted in the raw water are replaced by the hydrogen ions in the cation exchange unit, the salt positive ions are adsorbed by the cation exchange unit, the hydrogen ions are replaced, and the replaced hydrogen ions follow the The raw water enters the second desalinatio...

Embodiment 3

[0088] A water purifier is provided with a one-way cation exchange water filtering and purification system, the water filtering and purification system is provided with an ion exchange regeneration unit, and a first cation is arranged between the cation exchange unit and the anion exchange unit of the ion exchange regeneration unit. exchange membrane. Only the first cation exchange membrane is arranged between the cation exchange unit and the anion exchange unit, so that the hydrogen ions obtained after electrolysis can be unidirectionally transferred from the anion exchange unit to the cation exchange unit.

[0089] The ion exchange regeneration unit of this embodiment is provided with a desalination water circuit and a regeneration water circuit. The raw water is directly desalinated through the desalination circuit to produce pure water, and the regenerated water is electrolyzed through the regeneration water circuit to generate hydrogen ions and hydroxide ions, and the cat...

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Abstract

The invention discloses a one-way cation exchange type water filtering and purifying system and method and a water purifier. The water purifier is used for purifying water through the water filteringand purifying system; only a first cation exchange membrane is arranged between a cation exchange unit and an anion exchange unit of an ion exchange regeneration unit of the water filtering purification system; raw water is directly desalted through a desalted water path of the ion exchange regeneration unit, thereby producing pure water. The system has high desalination efficiency, wherein hydrogen ions and hydroxyl ions are generated through electrolysis of the regenerated water path; hydrogen ions replace salt positive ions in the cation exchange unit and the anion exchange unit which are desalted for a long time through a first cation exchange membrane; in addition, hydroxyl ions enter anion exchange resin along with water to replace salt anions, wherein the ion exchange regeneration unit improves the utilization rate of the water filtering and purifying system, so that the service life of the water purifier is prolonged.

Description

technical field [0001] The invention relates to the technical field of water purifiers, in particular to a one-way cation exchange type water filtering and purification system, method and water purifier. Background technique [0002] Most of the existing ion exchange water purifiers use a combined filter element treated with anions and cations to purify water, and an anion exchange membrane and a cation exchange membrane double-layer membrane are generally arranged between the combined filter elements. The membrane replaces the anions and cations, respectively, to achieve desalination. However, the combined filter element with separate treatment of anions and cations generally treats one ion first and then another ion with different electrical properties, and only needs to perform a single ion exchange. The use cost of the double-layer ion exchange membrane is too high, and The ion exchange filter element needs to be replaced after working for a certain period of time to ma...

Claims

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Application Information

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IPC IPC(8): C02F1/42B01J49/30
CPCC02F1/42B01J49/30C02F2001/427C02F2303/14
Inventor 陈小平
Owner GUANGDONG LIZI TECH CO LTD
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