CN115432775A - Bipolar membrane electric auxiliary deionization device and preparation method of alkaline water of bipolar membrane electric auxiliary deionization device - Google Patents
Bipolar membrane electric auxiliary deionization device and preparation method of alkaline water of bipolar membrane electric auxiliary deionization device Download PDFInfo
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- CN115432775A CN115432775A CN202110617604.0A CN202110617604A CN115432775A CN 115432775 A CN115432775 A CN 115432775A CN 202110617604 A CN202110617604 A CN 202110617604A CN 115432775 A CN115432775 A CN 115432775A
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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
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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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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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
- C02F1/46109—Electrodes
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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
- C02F2001/4619—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water only cathodic or alkaline water, e.g. for reducing
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- General Chemical & Material Sciences (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A bipolar membrane electric auxiliary deionization device and a preparation method of alkaline water of the bipolar membrane electric auxiliary deionization device are disclosed, wherein the alkaline water is prepared by adjusting the input alkaline making electricity quantity when the bipolar membrane electric auxiliary deionization device is in an alkaline making working condition. The electric quantity for producing alkali is more than or equal to 1.1 times of the electric quantity for absorbing salt; the salt absorption electric quantity is input electric quantity for carrying out adsorption treatment on anions and cations in the fluid under the working condition of salt absorption by the bipolar membrane electric auxiliary deionization device. The alkaline water is prepared by adjusting the alkali making electric quantity under the alkali making working condition, and the technical blank that the alkaline water cannot be prepared by the bipolar membrane electric auxiliary deionization device in the prior art is filled.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a bipolar membrane electric auxiliary deionization device and a preparation method of alkaline water of the bipolar membrane electric auxiliary deionization device.
Background
Alkaline water refers to water that is weakly alkaline, also known as soda water. Research shows that drinking alkaline water can adjust the pH value of a human body, when the acid in the organism is excessive, the organism can have the situation of immunity reduction, and drinking alkaline water properly is beneficial to the balance of acid and alkali. The alkaline water can improve appetite, ensure sufficient sleep and make the body active. And drinking alkaline water can also inhibit the growth of bacteria and has the functions of expelling toxin and resisting bacteria.
As a water treatment technology, the bipolar membrane electric auxiliary deionization device is composed of an electrode group and a bipolar membrane positioned between the two electrodes, each bipolar membrane is composed of a cation exchange membrane and an anion exchange membrane which are attached together, and a flow channel is formed between the bipolar membrane and the adjacent bipolar membrane or the adjacent electrodes. At present, the produced water produced by the bipolar membrane electric auxiliary deionization device is only the produced water with the desalination rate within a standard range, and has no corresponding requirement on the pH value of the produced water, and the bipolar membrane electric auxiliary deionization device in the prior art can not produce alkaline water.
Therefore, it is necessary to provide a bipolar membrane electric auxiliary deionization apparatus and a method for preparing alkaline water by using the same to solve the deficiencies of the prior art.
Disclosure of Invention
One of the purposes of the invention is to provide a preparation method of alkaline water for a bipolar membrane electric auxiliary deionization device, which can be used for preparing alkaline water, and the defects of the prior art are avoided.
The above object of the present invention is achieved by the following technical measures:
the method for preparing the alkaline water of the bipolar membrane electric auxiliary deionization device is characterized in that the alkaline water is prepared by adjusting the input alkaline preparation electricity quantity when the bipolar membrane electric auxiliary deionization device is in an alkaline preparation working condition.
Preferably, the alkali production capacity is 1.1 times or more the salt absorption capacity.
More preferably, the alkali production capacity is 1.3 times or more the salt absorption capacity.
Preferably, the time of the alkali making working condition is more than or equal to 1.5 times of the time of the salt absorption working condition.
More preferably, the time of the alkali making working condition is more than or equal to 2.0 times of the time of the salt absorption working condition.
Preferably, the pH of the alkaline water is 7.5 or more.
More preferably, the pH of the alkaline water is in the range of 8 to 12.
And mixing the alkaline water with the produced water obtained under the salt absorption working condition to obtain alkaline produced water, and discharging the alkaline produced water as system produced water of the bipolar membrane electric auxiliary deionization device.
And discharging the alkaline water serving as alkaline produced water serving as system produced water of the bipolar membrane electric auxiliary deionization device.
It is another object of the present invention to provide a bipolar membrane electrically assisted deionization device that avoids the disadvantages of the prior art. The bipolar membrane electric auxiliary deionization device can prepare alkaline water.
The above object of the present invention is achieved by the following technical measures:
provided is a bipolar membrane electric auxiliary deionization device, which prepares alkaline water according to the preparation method of the alkaline water of the bipolar membrane electric auxiliary deionization device.
According to the bipolar membrane electric auxiliary deionization device and the preparation method of the alkaline water of the bipolar membrane electric auxiliary deionization device, the alkaline water is prepared by adjusting the input alkaline making electricity quantity when the alkaline making working condition of the bipolar membrane electric auxiliary deionization device is met. The alkaline water is prepared by adjusting the alkali making electric quantity under the alkali making working condition, and the technical blank that the alkaline water cannot be prepared by the bipolar membrane electric auxiliary deionization device in the prior art is filled.
Drawings
The invention is further illustrated by means of the attached drawings, the content of which is not in any way limiting.
FIG. 1 is a schematic diagram of the salt absorption condition of a bipolar membrane electrically-assisted deionization device according to the present invention.
Fig. 2 is a schematic diagram of an alkali production condition of the bipolar membrane electrically-assisted deionization device according to the present invention.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Unless clearly defined otherwise herein, the scientific and technical terms used have the meaning commonly understood by those of skill in the art to which this application pertains. As used in this application, the terms "comprising," "including," "having," or "containing" and similar referents to shall mean that the content of the listed items is within the scope of the listed items or equivalents thereof.
In the specification and claims, the singular and plural of all terms are not intended to be limiting unless the context clearly dictates otherwise. The use of "first," "second," and similar language in the description and claims of this application does not denote any order, quantity, or importance, but rather the intention is to distinguish one material from another, or embodiment.
Unless the context clearly dictates otherwise, the term "or", "or" does not mean exclusively, but means that at least one of the mentioned items (e.g. ingredients) is present, and includes the case where a combination of the mentioned items may be present.
Reference in the specification to "some embodiments," "some embodiments," and so forth, means that a particular element (e.g., feature, structure, and/or characteristic) described in connection with the invention is included in at least one embodiment described in the specification, and may or may not be present in other embodiments. In addition, it is to be understood that the described inventive elements may be combined in any suitable manner.
Reference herein to "deionization" is to the removal of ions, including anions and cations in various valence states, from the liquid to be treated.
Example 1.
A method for preparing alkaline water of a bipolar membrane electric auxiliary deionization device is characterized in that the alkaline water is prepared by adjusting input alkaline preparation electricity quantity under the alkaline preparation working condition of the bipolar membrane electric auxiliary deionization device.
The salt absorption electric quantity is the electric quantity input by the bipolar membrane electric auxiliary deionization device for absorbing ions in fluid under the salt absorption working condition.
The alkali-making electric quantity is the electric quantity input by the bipolar membrane electric auxiliary deionization device for desorbing ions in fluid under the working condition of alkali making.
When the electric quantity of the alkali making is more than or equal to 1.1 times of the electric quantity of the salt absorption, the bipolar membrane electric auxiliary deionization device prepares the alkaline water, and the pH value of the alkaline water is more than or equal to 7.5. The time of the alkali making working condition is more than or equal to 1.5 times of the time of the salt absorption working condition.
In the case of the bipolar membrane electrically-assisted deionization apparatus of the present invention, in the case of the salt absorption operation, the cation exchange membrane of the bipolar membrane electrically-assisted deionization apparatus faces the positive electrode, and the anion exchange membrane bonded to the cation exchange membrane faces the negative electrode. Under the salt absorption working condition, anions in the flow channel move towards the positive electrode direction and are absorbed by the anion exchange membrane, cations in the flow channel move towards the negative electrode direction and are absorbed by the cation exchange membrane, and the process is the salt absorption working condition, as shown in fig. 1. Salt adsorption is performed on an ion exchange membrane. In the salt absorption working condition, anions and cations in the liquid in the flow channel are absorbed to the corresponding bipolar membrane, and the liquid in the flow channel is subjected to desalination.
When the invention is in the working condition of alkali production, the cation exchange membrane in the bipolar membrane electric auxiliary deionization device faces the negative electrode, the anion exchange membrane which is attached with the cation exchange membrane faces the positive electrode, and the interface layers of the cation membrane and the anion membrane of the bipolar membrane generate OH under the electric field - And H + Ionic, cationic inside the cationic membrane of the bipolar membrane, e.g. Na + Quilt H + The ions displace and move to the negative electrode into water, and anions such as Cl in the anionic membrane of the bipolar membrane - Is covered with OH - Displacement to the positive electrode into water, na + 、Cl - Plasma anion and cation enterIn the flow channel, as shown in fig. 2. It should be noted that, as the working condition time of the alkali production increases, the acid-base displacement amount in the flow channel becomes more unbalanced, and as the electric quantity of the alkali production input under the working condition of the alkali production increases, OH increases - The concentration of (a) is higher and higher, and the pH value is higher and higher.
The electric quantity for producing alkali is the integral of current value and working condition time for producing alkali in the bipolar membrane electric auxiliary deionization device.
According to the preparation method of the alkaline water of the bipolar membrane electric auxiliary deionization device, the alkaline water is prepared by adjusting the alkaline making electric quantity under the alkaline making working condition, and the technical blank that the alkaline water cannot be prepared by the bipolar membrane electric auxiliary deionization device in the prior art is filled.
Example 2.
The other characteristics of the preparation method of the alkaline water of the bipolar membrane electric auxiliary deionization device are the same as those of the embodiment 1, and the preparation method also has the following technical characteristics: the electric quantity for producing alkali is more than or equal to 1.3 times of the electric quantity for absorbing salt.
The value range of the electric quantity for producing the alkali in this embodiment makes the alkali producing effect of the alkaline water produced by the bipolar membrane electric auxiliary deionization apparatus better than that of embodiment 1.
Example 3.
The other characteristics of the preparation method of the alkaline water of the bipolar membrane electric auxiliary deionization device are the same as those of the embodiment 1, and the preparation method also has the following technical characteristics: the time of the alkali making working condition is more than or equal to 2.0 times of the time of the salt absorption working condition.
The time value range of the working condition of alkali preparation in this embodiment makes the alkali preparation effect of the alkaline water preparation by the bipolar membrane electric auxiliary deionization apparatus better than that of embodiment 1.
Example 4.
The other characteristics of the preparation method of the alkaline water of the bipolar membrane electric auxiliary deionization device are the same as those of the embodiment 1, and the preparation method also has the following technical characteristics: the pH value of the alkaline water ranges from 8 to 12.
The value range of the pH value of the alkaline water in this embodiment makes the alkaline preparation effect of the alkaline water prepared by the bipolar membrane electric auxiliary deionization apparatus better than that of the embodiment.
Example 5.
The other characteristics of the method are the same as those of any one of embodiments 1 to 4, and the method also has the following technical characteristics: and mixing the alkaline water with the produced water obtained under the salt absorption working condition to obtain alkaline produced water, and discharging the alkaline produced water as system produced water of the bipolar membrane electric auxiliary deionization device.
The quality of the alkaline water according to the present invention is within the standard range of drinking water quality, such as TDS value.
In this example, the alkaline water obtained in any one of examples 1 to 4 is mixed with the produced water obtained in the salt absorption condition to be used as the system produced water, and the system produced water is alkaline, so that the user can be healthy when drinking.
Example 6.
The other characteristics of the method are the same as those of any one of embodiments 1 to 4, and the method also has the following technical characteristics: and (3) taking the alkaline water as alkaline produced water to be discharged as system produced water of the bipolar membrane electric auxiliary deionization device.
In this example, the alkaline water obtained in any one of examples 1 to 4 was used as the system water, which was alkaline and was beneficial to health when drunk by the user.
Example 7.
A bipolar membrane electric auxiliary deionization apparatus, which prepares alkaline water according to any one of the preparation methods of alkaline water of the bipolar membrane electric auxiliary deionization apparatus of embodiments 1 to 6.
The bipolar membrane electric auxiliary deionization device comprises at least one pair of electrode groups and more than one bipolar membrane positioned between two electrodes forming the electrode groups, wherein each bipolar membrane is formed by a cation exchange membrane and an anion exchange membrane which are attached together.
It should be noted that all bipolar membranes sold in the market can be used as the bipolar membrane in the present scheme, and the details are not described herein.
Wherein the electrode group is a common motor. Common electrodes such as metal electrodes, titanium electrodes with ruthenium-yttrium coatings, ruthenium-yttrium electrodes, carbon electrodes, graphite electrodes, and the like.
The bipolar membrane electric auxiliary deionization device can prepare alkaline water by adjusting the alkali making electric quantity under the alkali making working condition, and fills the technical blank that the bipolar membrane electric auxiliary deionization device in the prior art can not prepare the alkaline water.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A preparation method of alkaline water of a bipolar membrane electric auxiliary deionization device is characterized by comprising the following steps: and (3) preparing alkaline water by adjusting the applied alkali preparation electricity quantity under the alkali preparation working condition.
2. The method for preparing alkaline water by using bipolar membrane electric-assisted deionization (EBDI) equipment according to claim 1, wherein the quantity of electricity for preparing alkaline water is 1.1 times or more that of the quantity of electricity for absorbing salt.
The salt absorption electric quantity is applied to the bipolar membrane for adsorbing the anions and the cations in the fluid under the salt absorption working condition of the bipolar membrane electric auxiliary deionization device.
3. The method for preparing alkaline water by using bipolar membrane electric-assisted deionization (EBDI) equipment according to claim 2, wherein the quantity of electricity for preparing alkaline water is not less than 1.3 times that of the quantity of electricity for absorbing salt.
4. The method for preparing alkaline water for bipolar membrane electrically-assisted deionization device according to claim 2, wherein the time of the alkaline preparation working condition is 1.5 times or more the time of the salt absorption working condition.
5. The method for preparing alkaline water for bipolar membrane electrically-assisted deionization device according to claim 4, wherein the time of the alkaline preparation working condition is 2.0 times or more the time of the salt absorption working condition.
6. The method for preparing alkaline water for bipolar membrane electrically-assisted deionization apparatus according to claim 1, wherein the pH of said alkaline water is 7.5 or higher.
7. The method for preparing alkaline water for a bipolar membrane electric-assisted deionization device according to claim 6, wherein the pH of the alkaline water is in the range of 8 to 12.
8. The method for preparing alkaline water for bipolar membrane electrically-assisted deionization (EBDI) equipment according to claim 1, wherein the alkaline water is mixed with the produced water obtained under the salt absorption condition to obtain alkaline produced water, and the alkaline produced water is discharged as the system produced water of the bipolar membrane electrically-assisted deionization (EBDI) equipment.
9. The method for preparing alkaline water for a bipolar membrane electric-assisted deionization device according to claim 1, wherein the alkaline water is discharged as alkaline product water as system product water of the bipolar membrane electric-assisted deionization device.
10. A bipolar membrane electric auxiliary deionization device, characterized in that the alkaline water is prepared by the alkaline water preparation method of the bipolar membrane electric auxiliary deionization device according to any one of claims 1 to 9.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212142148U (en) * | 2020-03-16 | 2020-12-15 | 佛山市云米电器科技有限公司 | Electrode and separation device using the same |
| CN212864232U (en) * | 2020-03-16 | 2021-04-02 | 佛山市云米电器科技有限公司 | Separation device and water treatment equipment thereof |
| US20210155508A1 (en) * | 2019-11-27 | 2021-05-27 | Uchicago Argonne, Llc | Water production for coffee brewing by electrodeionization |
| JP2021519685A (en) * | 2018-03-27 | 2021-08-12 | ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニアＴｈｅ Ｒｅｇｅｎｔｓ Ｏｆ Ｔｈｅ Ｕｎｉｖｅｒｓｉｔｙ Ｏｆ Ｃａｌｉｆｏｒｎｉａ | Systems and methods for integrated photovoltaic dialysis |
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2021
- 2021-06-03 CN CN202110617604.0A patent/CN115432775A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021519685A (en) * | 2018-03-27 | 2021-08-12 | ザ リージェンツ オブ ザ ユニバーシティ オブ カリフォルニアＴｈｅ Ｒｅｇｅｎｔｓ Ｏｆ Ｔｈｅ Ｕｎｉｖｅｒｓｉｔｙ Ｏｆ Ｃａｌｉｆｏｒｎｉａ | Systems and methods for integrated photovoltaic dialysis |
| US20210155508A1 (en) * | 2019-11-27 | 2021-05-27 | Uchicago Argonne, Llc | Water production for coffee brewing by electrodeionization |
| CN212142148U (en) * | 2020-03-16 | 2020-12-15 | 佛山市云米电器科技有限公司 | Electrode and separation device using the same |
| CN212864232U (en) * | 2020-03-16 | 2021-04-02 | 佛山市云米电器科技有限公司 | Separation device and water treatment equipment thereof |
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