WO2015088278A1 - Dispositif d'adoucissement de l'eau et procédé de régénération de résine échangeuse d'ions - Google Patents

Dispositif d'adoucissement de l'eau et procédé de régénération de résine échangeuse d'ions Download PDF

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Publication number
WO2015088278A1
WO2015088278A1 PCT/KR2014/012274 KR2014012274W WO2015088278A1 WO 2015088278 A1 WO2015088278 A1 WO 2015088278A1 KR 2014012274 W KR2014012274 W KR 2014012274W WO 2015088278 A1 WO2015088278 A1 WO 2015088278A1
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Prior art keywords
exchange resin
resin
ion exchange
water
chamber
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PCT/KR2014/012274
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English (en)
Korean (ko)
Inventor
오나리히로토
미야기게이스케
오카자키타케시
야나세사토무
Original Assignee
삼성전자주식회사
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Priority claimed from JP2014243383A external-priority patent/JP6408361B2/ja
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to US15/104,210 priority Critical patent/US9815713B2/en
Priority claimed from KR1020140179152A external-priority patent/KR102246440B1/ko
Publication of WO2015088278A1 publication Critical patent/WO2015088278A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/46104—Devices therefor; Their operating or servicing
    • C02F1/4618—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
    • B01J39/04—Processes using organic exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J41/00—Anion exchange; Use of material as anion exchangers; Treatment of material for improving the anion exchange properties
    • B01J41/04—Processes using organic exchangers
    • B01J41/07—Processes using organic exchangers in the weakly basic form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/05—Regeneration or reactivation of ion-exchangers; Apparatus therefor of fixed beds
    • B01J49/07—Regeneration or reactivation of ion-exchangers; Apparatus therefor of fixed beds containing anionic exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/75—Regeneration or reactivation of ion-exchangers; Apparatus therefor of water softeners
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
    • C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C02F2001/422—Treatment of water, waste water, or sewage by ion-exchange using anionic exchangers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/16—Regeneration of sorbents, filters

Definitions

  • the present invention relates to a softening apparatus and a regeneration method of an ion exchange resin.
  • the softening device passes hard water through a cation exchange resin, and at this time, hardness components such as calcium ions and magnesium ions are adsorbed to the cation exchange resin to soften the hard water.
  • a chemical such as sodium chloride is added to the resin to regenerate the cation exchange resin.
  • the softening device disclosed in Patent Document 2 includes a resin chamber having a cation exchange resin and an anion exchange resin, and a pair of electrodes disposed between the resin chambers. Such a softening device allows a voltage to be applied to the resin chamber by an electrode so that the cation exchange resin can be recycled without using a chemical agent or the like.
  • the resin chamber of the softening device has a cation exchange resin and an anion exchange resin
  • when voltage is applied to the resin chamber by a pair of electrodes water is decomposed between the cation exchange resin and the anion exchange resin to generate hydrogen ions and hydroxide ions. .
  • hydrogen ions are exchanged with hardness components such as calcium ions and magnesium ions adsorbed on the cation exchange resin to regenerate the cation exchange resin.
  • the strong alkaline anion exchange resin is easy to adsorb anions such as chloride ions in water, but once these anions are adsorbed, the hydroxide ions generated from water decomposition are difficult to exchange with these anions.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 7-232165
  • Patent Document 2 Japanese Patent Laid-Open No. 2012-236171
  • the present invention provides a softening apparatus and a method for regenerating an ion exchange resin to maintain the performance of water softening, to easily regenerate and continuously use the ion exchange resin without the use of drugs.
  • Softening apparatus after the water softening the water through the resin chamber disposed between the resin chamber and the resin chamber for softening the water passed through the ion exchange resin with the ion exchange resin And an electrode for regenerating the ion exchange resin, wherein the ion exchange resin comprises at least a weakly acidic cation exchange resin and a weakly alkaline anion exchange resin.
  • Softening here means reducing the hardness component contained in water.
  • Such a softening device can soften water because the ion exchange resin is at least a weakly acidic cation exchange resin and a weakly alkaline anion exchange resin, and can easily regenerate the ion exchange resin after softening the water.
  • the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin have the following properties.
  • the weakly acidic cation exchange resin has the property of easily adsorbing hardness components and hydrogen ions generated by water decomposition compared to the strongly acidic cation exchange resin.
  • the weakly alkaline anion exchange resin has the property of easily exchangeable anions in the adsorbed water and hydroxide ions generated by water decomposition as compared with the strongly alkaline anion exchange resin.
  • the softening apparatus can reduce the amount of hydrogen ions and hydroxide ions used for regeneration of ion exchange resins, compared to conventional softening apparatuses using strong acidic cation exchange resins or strong alkaline anion exchange resins. This can shorten the regeneration time of the ion exchange resin and save power.
  • the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin form particulates, respectively, to be mixed in the resin chamber, and the particle diameters of the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin are respectively 100 ⁇ m or more and 500 ⁇ m or less.
  • the particle diameter of the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin is smaller than 100 ⁇ m, water decomposition becomes easier, but pressure loss is more likely to occur during water passage.
  • the particle diameters of the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin are 100 ⁇ m or more and 400 ⁇ m or less, and most preferably 250 ⁇ m or more and 400 ⁇ m or less.
  • the particle diameter refers to the maximum length from one point to the other at the outer edges of the particulate weakly acidic cation exchange resin and weakly alkaline anion exchange resin.
  • the ion exchange capacity of the weakly acidic cation exchange resin is 1 to 9 times the ion exchange capacity of the weakly alkaline anion exchange resin.
  • the ion exchange capacity of the weakly acidic cation exchange resin is less than 1 times the ion exchange capacity of the weakly alkaline anion exchange resin, the absolute amount per unit volume of the weakly acidic cation exchange resin in the resin chamber decreases and the performance of the softening device is degraded. Because.
  • the regeneration performance decreases because the locations of the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin are reduced.
  • the ion exchange capacity of the weakly acidic cation exchange resin is greater than 9 times that of the weakly alkaline anion exchange resin, the hydroxide ions in the resin chamber are excessive during regeneration, and the regeneration performance is deteriorated due to neutralization reaction with hydrogen ions.
  • the ion exchange capacity of the weakly acidic cation exchange resin is most preferably 3 to 9 times less than that of the weakly alkaline anion exchange resin.
  • the resin chamber may be provided in plural, wherein the electrodes may be disposed with a plurality of resin chambers interposed therebetween, and further comprising a conductive member between the plurality of resin chambers so that the ion exchange resin is divided into units separated by the electrode and the conductive member. Can be played.
  • the conductive member may be non-ion permeable or non-transmissive.
  • the resin chamber is formed by being separated by an anion exchange resin membrane disposed on the anode side and a cation exchange resin membrane disposed on the cathode side of the electrodes, and flows from the resin chamber to the anode chamber which is a space between the anode or the conductive member and the anion exchange resin membrane.
  • a flow path and a flow path flowing from the anode chamber to the cathode chamber, which is a space between the conductive member or the cathode and the cation exchange resin film, may be provided.
  • the method for regenerating an ion exchange resin provides a voltage between an resin chamber and a resin chamber while applying a voltage to an electrode disposed between a plurality of resin chambers containing an ion exchange resin and a conductive member provided between the plurality of resin chambers.
  • the ion exchange resin is regenerated, and the ion exchange resin is regenerated for each unit separated by the electrode and the conductive member.
  • the resin chamber is formed by being divided by an anion exchange resin membrane provided on the anode side and a cation exchange resin membrane disposed on the cathode side of the electrode, and passed through the resin chamber to regenerate the ion exchange resin, and then from the resin chamber It can pass through the anode chamber which is a space between a member and an anion exchange resin film, and can pass from a cathode chamber into a cathode chamber which is a space between a conductive member or a cathode and a cation exchange resin film.
  • the softening device can be continuously used by repeating the softening-regeneration without using a medicine or the like while maintaining the performance of softening the water.
  • FIG. 1 is an exemplary view of a softening device according to an embodiment.
  • 2 is an experimental result showing the relationship between the particle size of the ion exchange resin and the removal rate of the hardness component of the ion exchange resin of the softening apparatus according to an embodiment.
  • 3 is an experimental result showing the relationship between the ion exchange capacity ratio of the softening device according to an embodiment and the removal rate of the hardness component of the ion exchange resin.
  • FIG 4 is an exemplary view of a softening device according to another embodiment.
  • FIG. 5 is an explanatory diagram of a water circulation path in the softening apparatus shown in FIG. 4.
  • FIG. 6 (a) to 6 (b) are diagrams showing the results of Example 1 and Example 2.
  • FIG. 6 (a) to 6 (b) are diagrams showing the results of Example 1 and Example 2.
  • FIG. 7 is a view showing the results of Example 3 and Comparative Example 1.
  • FIG. 7 is a view showing the results of Example 3 and Comparative Example 1.
  • FIG. 1 is an exemplary view of a softening device according to an embodiment.
  • the water softening device 100 includes a resin chamber 13 in which an introduction port 101 into which water including a hardness component is introduced and a discharge port 102 through which hard water is softened are discharged. And a first electrode and a second electrode which are a pair of electrodes arranged with the resin chamber 13 interposed therebetween.
  • the first electrode is the anode 21 and the second electrode is the cathode 22.
  • a pair of electrodes, the anode 21 and the cathode 22, are provided to face each other, and by applying a constant voltage, one electrode becomes the anode 21 and the other electrode is the cathode. At this time, a predetermined current flows in the resin chamber 13 from the anode 21 toward the cathode 22.
  • the positive electrode 21 and the negative electrode 22 may be coated on a surface of a predetermined base made of titanium or the like with an alloy containing platinum, an alloy containing platinum, or a platinum group metal as a main component.
  • the shape of the anode 21 and the cathode 22 may be a mesh shape and a plate shape.
  • the softening device of one embodiment can freely change the magnitude of the current flowing into the resin chamber 13 by changing the voltages applied to these electrodes.
  • the softening apparatus 100 includes the anode chamber 11, the resin chamber 13, and the cathode chamber 12 spaced apart along the current direction flowing into the resin chamber 13.
  • the resin chamber 13 and the anode chamber 11 are spaced apart by the first diaphragm 31, and the resin chamber 13 and the cathode chamber 12 are spaced apart by the second diaphragm 32.
  • the first diaphragm 31 may be an anion exchange resin membrane
  • the second diaphragm 32 may be a cation exchange resin membrane.
  • the materials of the anion exchange resin membrane and the cation exchange resin membrane are not particularly limited as long as they have anion exchange function and cation exchange function, respectively.
  • the first diaphragm 31, which is an anion exchange resin film selectively transmits anions.
  • the second diaphragm 32 which is a cation exchange resin film, selectively transmits cations.
  • the anion exchange resin membrane and the cation exchange resin membrane are preferably 10 ⁇ m or more and 300 ⁇ m or less, more preferably 50 ⁇ m or more and 150 ⁇ m or less, in terms of a balance between mechanical strength and ion permeability.
  • the resin chamber 13 has an ion exchange resin 40 therein.
  • the water introduced into the resin chamber 13 is softened by passing through the ion exchange resin 40 and is led to the generated water.
  • the resin chamber 13 is comprised so that the water which passed through the inside may flow in the direction substantially perpendicular to the electric current direction which flows in the resin chamber 13.
  • the ion exchange resin 40 is composed of at least one of the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42.
  • the resin chamber 13 accommodates the weakly acidic cation exchange resin 41 which has a carboxyl group as an exchanger, and the weakly alkaline anion exchange resin 42 which has a tertiary amino group from a primary amino group as an exchanger, for example.
  • the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 each form a particulate form and are mixed and accommodated in the resin chamber 13.
  • weakly acidic cation exchange resins 41 and weakly alkaline anion exchange resins 42 are randomly mixed in the resin chamber 13.
  • the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 each have a particle diameter of 100 ⁇ m or more and 500 ⁇ m or less.
  • the particle size of the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 may be 100 ⁇ m or more and 400 ⁇ m or less.
  • the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 may have a particle diameter of 250 ⁇ m or more and 400 ⁇ m or less.
  • the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 each have a generally spherical shape, the diameter of which is 100 ⁇ m or more and 500 ⁇ m or less, and these particle diameters may be provided according to sizes.
  • the ratio of the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 in the resin chamber 13 is equal to the ion exchange capacity of the weakly acidic cation exchange resin 41. It may be more than one times the exchange capacity.
  • the ratio between the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 is one or more times and nine times or less.
  • the softening device receives water prepared at a hardness of 250 mg / L in terms of CaCO 3 through the introduction port 101 during the softening treatment.
  • the water can be softened while the hardness components such as calcium ions and magnesium ions contained in the water are adsorbed on the weakly acidic cation exchange resin 41 and reduced.
  • the softening device applies a predetermined voltage to the pair of electrodes 21, the anode 21 and the cathode 22, at the same time when regenerating the ion exchange resin 40 after the softening treatment is performed once or several times.
  • 101) is provided water prepared at a hardness of 250 mg / L in terms of CaCO 3 .
  • the hydrogen ions exchange hardness components such as calcium ions and magnesium ions adsorbed to the weakly acidic cation exchange resin 41, and sulfate ions and carbonate ions adsorbed to the weakly alkaline anion exchange resin 42 by hydroxide ions.
  • the ion exchange resin 40 is regenerated by the exchange of the anion component.
  • the length of the flow path in the resin chamber 13 be as short as possible in order to suppress the detached hardness component and the anion component from being resorbed to the ion exchange resin 40.
  • the particle diameters of the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 are 100 ⁇ m or more and 500 ⁇ m, respectively, compared to 500 ⁇ m or more and 750 ⁇ m or less, which is the size of a general ion exchange resin 40. It can be seen that the removal rate of the hardness component of the ion exchange resin 40 is high.
  • the reason is that when the particle diameters of the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 are in the range of 100 ⁇ m or more and 500 ⁇ m, respectively, the locations of the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 are increased. This is because water decomposition occurs easily.
  • the particle size is smaller than 100 ⁇ m, the pressure loss occurs due to blockage of the respective ports 101 and 102 and the mesh accompanying them.
  • the hardness removal performance is excellent when the ion exchange capacity of the weakly acidic cation exchange resin 41 is 1 to 9 times the ion exchange capacity of the weak alkaline anion exchange resin 42.
  • the hardness removal performance is very excellent when the ion exchange capacity of the weakly acidic cation exchange resin 41 is three to six times the ion exchange capacity of the weak alkaline anion exchange resin 42.
  • the ion exchange resin 40 may be made of at least one of the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 to soften the water flowing into the resin chamber 13,
  • the removal rate of the hardness component adsorbed on the ion exchange resin 40 can be increased, and the water can be easily recycled after the water is softened without the use of a medicament or the like, thereby enabling continuous use.
  • water softening device 100 is not limited to the form shown in FIG.
  • FIG 4 is another exemplary view of the softening device 100.
  • the softening device 100 of FIG. 4 compares the softening device 100 shown in FIG. 1 with the positive electrode 21 and the negative electrode 22, which are a pair of electrodes disposed with the resin chamber 13 therebetween. It is the same in that it includes.
  • the softening apparatus 100 of FIG. 4 has an anode chamber 11 between the anode 21 and the adjacent resin chamber 13, and a cathode between the cathode 22 and the adjacent resin chamber 13. It is the same as the softening device 100 shown in FIG. 1 in that it has a seal 12.
  • anode chamber 11a and the cathode chamber 12b are shown as the anode chamber 11a and the cathode chamber 12b, respectively.
  • the softening apparatus 100 of another embodiment differs from the softening apparatus of one embodiment in that a plurality of resin chambers 13 are provided.
  • these two resin chambers 13 are shown as the resin chamber 13a and the resin chamber 13b, respectively.
  • the conductive member 50 which will be described later, is provided between the plurality of resin chambers 13 as compared with the softening apparatus 100 illustrated in FIG. 1.
  • the conductive member 50 divides the space between the resin chambers 13 adjacent to each other into the anode chamber 11 and the cathode chamber 12.
  • the conductive member 50 divides the space between the resin chamber 13a and the resin chamber 13b.
  • the conductive member 50 is divided into a cathode chamber 12a which is a space between the resin chamber 13a and the conductive member 50 and an anode chamber 11b which is a space between the conductive member 50 and the resin chamber 13b. do.
  • the resin chamber 13a is spaced apart from the adjacent space by the first diaphragm 31a and the second diaphragm 32a provided with the resin chamber 13a therebetween.
  • the resin chamber 13b is spaced apart from the adjacent space by the first diaphragm 31b and the second diaphragm 32b provided with the resin chamber 13b therebetween.
  • the anode chamber 11a and the resin chamber 13a are separated by the first diaphragm 31a, and the resin chamber 13a and the cathode chamber 12a are spaced apart by the second diaphragm 32a.
  • anode chamber 11b and the resin chamber 13b are separated by the first diaphragm 31b, and the resin chamber 13b and the cathode chamber 12b are spaced apart by the second diaphragm 32b.
  • first diaphragms 31a and 31b may be anion exchange resin membranes
  • second diaphragms 32a and 32b may be cation exchange resin membranes
  • the resin chamber 13a and the resin chamber 13b have ion exchange resin 40 therein.
  • the ion exchange resin 40 is the same as that of FIG. 1 in that it consists of at least the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42.
  • the particle size of the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 and the ratio between the weakly acidic cation exchange resin 41 and the weakly alkaline anion exchange resin 42 in the resin chamber 13 are described in detail. It may be the same as in one case.
  • the conductive member 50 is a member having conductivity.
  • the conductive member 50 is conductive, at least non-permeable and non-ionic permeable, and may be resistant to positive and negative polarizations in water.
  • the conductive member 50 may be, for example, a plate made of a metal material, and may be coated with a platinum, an alloy containing platinum, or an alloy containing platinum group metal as a main component.
  • the voltage is not applied to the positive electrode 21 and the negative electrode 22 in the same manner as the softening apparatus 100 of FIG. 1.
  • the water to be treated as soft water of another embodiment is divided into two, and a portion of the water to be treated is introduced into the resin chamber 13a from an introduction port 101a provided in the lower portion of the resin chamber 13a.
  • the remaining water to be treated is introduced into the resin chamber 13b from an introduction port 101b provided below the resin chamber 13b.
  • each of the resin chamber 13a and the resin chamber 13b is passed through from the lower side to the upper side, and the introduced treated water can be softened by removing the hardness component by the ion exchange resin 40.
  • the softened water is discharged into the generated water through the discharge port 102a provided at the upper portion of the resin chamber 13a and the discharge port 102b provided at the upper portion of the resin chamber 13b, respectively.
  • the same water as the water to be treated is introduced into the resin chamber 13a from the introduction port 101a and introduced into the resin chamber 13b from the introduction port 101b.
  • anion components adsorbed on the weakly alkaline anion exchange resin 42 are exchanged by hydroxide ions.
  • the ion exchange resin 40 is then regenerated.
  • the conductive member 50 is polarized to become a bipolar electrode.
  • the anode 21 side of the conductive member 50 forms a cathode
  • the cathode 22 side of the conductive member 50 forms a positive electrode
  • the conductive member 50 becomes a bipolar electrode, water decomposition occurs on the surface of the conductive member 50.
  • the second diaphragm 32a is a cation exchange resin membrane
  • the hardness component such as calcium ions in the resin chamber 13a is easily discharged to the cathode chamber 12a side through the second diaphragm 32a, but the anion component 2 It is difficult to penetrate the diaphragm 32a. That is, the electrodialysis effect occurs.
  • the conductive member 50 is a bipolar electrode
  • the second diaphragm 32a side is a cathode
  • a hardness component that is a cation may be attracted.
  • the hardness component can be easily discharged from the resin chamber 13a to the cathode chamber 12a side more efficiently.
  • the chance of the hardness component being resorbed to the ion exchange resin 40 can be further reduced, thereby improving the regeneration efficiency of the ion exchange resin 40.
  • the flow path of water is as follows.
  • FIG. 5 is a diagram illustrating a flow path of water in the softening apparatus 100 illustrated in FIG. 4.
  • water introduced from the introduction port 101a into the resin chamber 13a and drawn out from the discharge port 102a is then introduced into the lower portion of the anode chamber 11a.
  • Water introduced into the lower portion of the anode chamber 11a is led out to the upper portion of the anode chamber 11a and then introduced into the lower portion of the cathode chamber 12a.
  • Water introduced into the upper portion of the anode chamber 11b is led out of the lower portion of the anode chamber 11b and introduced into the lower portion of the cathode chamber 12b.
  • the flow path which flows into the cathode chamber 12a which is a space between and 2nd diaphragm 32a is provided.
  • the water softening device includes a flow path flowing from the resin chamber 13b to the anode chamber 11b, which is a space between the conductive member 50 and the first diaphragm 31b, and the cathode 22 from the anode chamber 11b. ) And a flow path flowing into the cathode chamber 12b, which is a space between the second diaphragm 32b.
  • Water passes through the resin chamber 13b, and after regenerating the ion exchange resin, passes through the flow path.
  • the ion exchange resin is regenerated for each unit (block) separated by the positive electrode 21, the negative electrode 22, and the conductive member 50, which are electrodes.
  • water is first introduced from the introduction port 101 into the resin chamber 13 to be led to the discharge port 102.
  • each chamber is designated in the introduction and derivation of water, but the upper and lower portions may be reversed.
  • the resin chamber of the embodiment has at least one of a weakly acidic cation exchange resin and a weakly alkaline anion exchange resin, but has a weakly acidic cation exchange resin and a weakly alkaline anion exchange resin as a main component, and further has a strong acid cation exchange resin or a strongly alkaline anion exchange resin. It is also possible.
  • the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin are generally spherical in the embodiment, but may be in the form of a flat plate, a gel or an amorphous form.
  • the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin are randomly contained in the resin chamber, but may be regularly contained in the resin chamber.
  • the weakly acidic cation exchange resin preferably has exchange groups other than carboxyl groups, and the weakly alkaline anion exchange resin may have exchange groups other than primary to tertiary amino groups.
  • the particle diameters of all ion exchange resins do not need to be the same, and the average particle diameter of the ion exchange resin accommodated in a resin chamber is 100 micrometers or more and 500 micrometers or less.
  • the water containing the hardness component is configured to flow from the lower portion of the resin chamber to the upper portion, but may be configured to flow from the upper portion to the lower portion, or may be rotated to flow in the horizontal direction.
  • the flow direction of the above-mentioned water was substantially perpendicular to the direction of the current which flows through the inside of a resin chamber in the Example, it does not necessarily need to be perpendicular and may be parallel or inclined at a predetermined angle.
  • an electrode is comprised so that it may become a pair, it may be comprised so that it may be a plurality of pairs, and it may be a soluble electrode or an insoluble electrode.
  • the positive electrode and the negative electrode may be the same or different.
  • the embodiment When regenerating the ion exchange resin, the embodiment introduces water prepared at a hardness of 250 mg / L in terms of CaCO 3 from the inlet port, but it is not necessary to introduce water of such hardness. You may introduce
  • the first diaphragm and the second diaphragm may be a membrane having a pass selectivity such as an ion exchange resin membrane, or a membrane having no pass selectivity such as a porous membrane.
  • the first diaphragm and the second diaphragm may be the same or different.
  • Embodiment 1 is the softening apparatus 100 shown in FIG.
  • the ion exchange resin 40 is uniformly so that the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin whose particle diameters in the hydrous state are adjusted to 300 ⁇ m to 425 ⁇ m are 3: 1 with an ion exchange capacity (meq / ml), respectively. It is a mixture.
  • the anode 21 and the cathode 22 are mesh-shaped electrodes in which platinum is coated on titanium, which is a substrate, and has an electrode size of 5 cm x 10 cm.
  • the first diaphragm 31 is a strong alkaline anion exchange resin film having a thickness of 100 ⁇ m
  • the second diaphragm 32 is a strong acid cation exchange resin film having a thickness of 100 ⁇ m.
  • the water softening device 100 includes a transparent polyvinyl chloride cartridge, and 80 mL of the ion exchange resin 40, the positive electrode 21, the negative electrode 22, the first diaphragm 31, the second diaphragm 32 Set to.
  • the water to be treated is hard water having a hardness of 250 mg / L in terms of calcium carbonate (CaCO 3 ).
  • This treated water was introduced from the inlet port 101 into the resin chamber 13 at a rate of 120 mL / min and discharged from the discharge port 102 to obtain soft water (softening).
  • the same treated water was then introduced as regeneration water into the resin chamber 13 from the inlet of the introduction port 101 at a rate of 10 mL / min and at the same time a current density of 2 A / dm 2 between the anode 21 and the cathode 22. 30 minutes (electrical regeneration).
  • Embodiment 2 is the softening apparatus 100 shown in FIG.
  • the ion exchange resin 40 is uniformly so that the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin whose particle diameters in the hydrous state are adjusted to 300 ⁇ m to 425 ⁇ m are 3: 1 with an ion exchange capacity (meq / ml), respectively. It is a mixture.
  • the positive electrode 21, the negative electrode 22, and the conductive member 50 are mesh-shaped electrodes in which platinum is coated on titanium, which is a substrate, and has an electrode size of 5 cm x 10 cm.
  • the first diaphragms 31a and 31b are strongly alkaline anion exchange resin membranes having a thickness of 100 ⁇ m
  • the second diaphragms 32a and 32b are strongly acidic cation exchange resin membranes having a thickness of 100 ⁇ m.
  • the water softening device 100 includes a transparent polyvinyl chloride cartridge, and 160 mL (80 mL ⁇ 2) of the ion exchange resin 40, the positive electrode 21, the negative electrode 22, and the first diaphragms 31a and 31b. 2nd diaphragm 32a, 32b is set.
  • the water to be treated is hard water having a hardness of 250 mg / L in terms of calcium carbonate (CaCO 3 ).
  • This treated water was introduced into the resin chambers 13a and 13b from the introduction ports 101a and 101b at a rate of 120 mL / min and discharged from the discharge ports 102a and 102b to obtain soft water (softening).
  • the same treated water was then introduced as reclaimed water from the inlet of the introduction ports 101a and 101b into the resin chambers 13a and 13b at a rate of 10 mL / min and at the same time 2A / between the anode 21 and the cathode 22. Allow 30 minutes to flow at a current density of dm2 (electrical regeneration).
  • the conductive member 50 becomes a bipolar electrode, and the anode 21 side of the conductive member 50 forms a cathode and the cathode 22 side forms a positive electrode.
  • the water passage is as shown in FIG. 5.
  • This softening-electric regeneration process is repeated eight times.
  • FIG. 6 (a) shows the relationship between the treatment flow rate and the hardness component removal rate in Examples 1 and 2.
  • the horizontal axis represents the integrated value of the treatment flow rate
  • the vertical axis represents the hardness component removal rate
  • Fig. 6 (a) the relationship between the treatment flow rate and the hardness component removal rate is shown for each of the water softening-electric regeneration in Example 1 and Example 2.
  • Example 1 and Example 2 together achieve a high hardness component removal rate.
  • Example 2 has a higher hardness component removal rate than Example 1 although the current flowing per unit volume in the ion exchange resin 40 is smaller.
  • Embodiment 3 is the water softening device 100 shown in FIG.
  • the device configuration of the water softening device 100 is the same as that of the first embodiment.
  • the water to be treated is hard water having a hardness of 250 mg / L in terms of calcium carbonate (CaCO 3 ).
  • the same treated water was then introduced as reclaimed water from the inlet 101 to the resin chamber 13 at a rate of 10 mL / min and at the same time a current density of 1 A / dm 2 between the anode 21 and the cathode 22. 30 minutes (electrical regeneration).
  • the softening device 100 shown in FIG. 1 The softening device 100 shown in FIG.
  • the device configuration of the softening device 100 is the same as that in Example 3 except that the ion exchange resin 40 is changed from a weakly acidic cation exchange resin and a weakly alkaline anion exchange resin to a strongly acidic cation exchange resin and a strong alkaline anion exchange resin. .
  • Example 3 the to-be-processed water was processed.
  • FIG. 7 shows the results of Example 3 and Comparative Example 1.
  • FIG. 7 shows the relationship between the treatment flow rate and the hardness component removal rate for Example 3 and Comparative Example 1.
  • the horizontal axis represents the integrated value of the treatment flow rate
  • the vertical axis represents the hardness component removal rate
  • FIG. 7 the relationship between the processing flow rate and the hardness component removal rate is shown for each time of water softening-electrical regeneration for Example 3 and Comparative Example 1.
  • Example 3 the removal rate of the hardness component at the time of repeating the softening-electric regeneration process ten times was stabilized at about 66%.
  • the use of the weakly acidic cation exchange resin and the weakly alkaline anion exchange resin is easier to regenerate the ion exchange resin 40 and the exchange of the ion exchange resin 40 than that of the strong acid cation exchange resin and the strong alkaline anion exchange resin. It can be seen that the frequency is less.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

La présente invention concerne un dispositif d'adoucissement de l'eau comprenant : une chambre de résine comprenant une résine échangeuse d'ions et adoucissant de l'eau dure passant à travers la résine échangeuse d'ions ; et des électrodes disposées en plaçant la chambre de résine entre celles-ci et appliquant des tensions à la chambre de résine de manière à adoucir l'eau dure, et régénérant la résine échangeuse d'ions, la résine échangeuse d'ions étant une résine échangeuse de cations légèrement acide et/ou une résine échangeuse d'anions faiblement alcaline. La présente invention concerne un dispositif d'adoucissement de l'eau permettant de régénérer facilement la résine échangeuse d'ions et de répéter l'adoucissement-régénération sans utiliser de produits chimiques ou analogues tout en gardant les performances d'adoucissement de l'eau, permettant ainsi une utilisation continue de celui-ci.
PCT/KR2014/012274 2013-12-13 2014-12-12 Dispositif d'adoucissement de l'eau et procédé de régénération de résine échangeuse d'ions WO2015088278A1 (fr)

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US15/104,210 US9815713B2 (en) 2013-12-13 2014-12-12 Water softening device and method for regenerating ion exchange resin

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JP2013-257726 2013-12-13
JP2013257726 2013-12-13
JP2014243383A JP6408361B2 (ja) 2013-12-13 2014-12-01 軟水化装置及びイオン交換樹脂の再生方法
JP2014-243383 2014-12-01
KR10-2014-0179152 2014-12-12
KR1020140179152A KR102246440B1 (ko) 2013-12-13 2014-12-12 연수화 장치 및 이온교환수지의 재생 방법

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Publication number Priority date Publication date Assignee Title
CN111233088A (zh) * 2020-03-16 2020-06-05 佛山市云米电器科技有限公司 一种多重离子交换式滤水净化系统、方法及净水器
CN111233096A (zh) * 2020-03-16 2020-06-05 佛山市云米电器科技有限公司 一种混合横置式离子交换净水系统、方法及净水器
CN111233085A (zh) * 2020-03-16 2020-06-05 佛山市云米电器科技有限公司 一种单向阳离子混合交换式净水系统、方法及净水器

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JP2002186973A (ja) * 2000-12-20 2002-07-02 Nec Corp 電気再生型脱イオン装置
JP2003326269A (ja) * 2002-05-13 2003-11-18 Ebara Corp 電気再生式脱塩装置
JP2006043549A (ja) * 2004-08-03 2006-02-16 Hitachi Maxell Ltd 純水生成装置または軟水生成装置
JP2008068198A (ja) * 2006-09-14 2008-03-27 Kurita Water Ind Ltd 電気脱イオン装置
KR20110098823A (ko) * 2008-12-17 2011-09-01 제너럴 일렉트릭 캄파니 이온-교환 장치 및 그의 이온-교환 재료의 재생 방법

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JP2002186973A (ja) * 2000-12-20 2002-07-02 Nec Corp 電気再生型脱イオン装置
JP2003326269A (ja) * 2002-05-13 2003-11-18 Ebara Corp 電気再生式脱塩装置
JP2006043549A (ja) * 2004-08-03 2006-02-16 Hitachi Maxell Ltd 純水生成装置または軟水生成装置
JP2008068198A (ja) * 2006-09-14 2008-03-27 Kurita Water Ind Ltd 電気脱イオン装置
KR20110098823A (ko) * 2008-12-17 2011-09-01 제너럴 일렉트릭 캄파니 이온-교환 장치 및 그의 이온-교환 재료의 재생 방법

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111233088A (zh) * 2020-03-16 2020-06-05 佛山市云米电器科技有限公司 一种多重离子交换式滤水净化系统、方法及净水器
CN111233096A (zh) * 2020-03-16 2020-06-05 佛山市云米电器科技有限公司 一种混合横置式离子交换净水系统、方法及净水器
CN111233085A (zh) * 2020-03-16 2020-06-05 佛山市云米电器科技有限公司 一种单向阳离子混合交换式净水系统、方法及净水器

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