Stacked three-dimensional rocking chair type capacitive deionization device and deionization method

A capacitive deionization and stacking technology, which is applied in the field of water treatment, can solve the problems of low efficiency and small processing capacity, and achieve the effects of large processing capacity, enlarged adsorption space, and high efficiency

Active Publication Date: 2021-07-09
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a stacked three-dimensional rocking chair capacitive deionization device and deionization method, aiming to solve the technical problems in the prior art that large-scale concentration and purification cannot be carried out continuously, the processing volume is small, and the efficiency is low

Method used

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  • Stacked three-dimensional rocking chair type capacitive deionization device and deionization method
  • Stacked three-dimensional rocking chair type capacitive deionization device and deionization method
  • Stacked three-dimensional rocking chair type capacitive deionization device and deionization method

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preparation example Construction

[0064] As a further illustration, in order to obtain an electrode material that can improve the adsorption performance of the capacitive deionization device, the preparation method of the Ag@C three-dimensional electrode material includes the steps:

[0065] S1, mix Aspergillus niger and water according to the solid-to-liquid ratio of 1-5g: 50ml to obtain Aspergillus niger solution;

[0066] S2, adding 1-3g of m-phenylenediamine and 0.5-5g of ammonium persulfate to the Aspergillus niger solution in sequence for reaction, and after 1-8h of reaction, suction filtration is formed, and then the substance obtained after the suction filtration is subjected to Freeze-dry to obtain poly-m-phenylenediamine@Aspergillus niger composite material;

[0067] S3, placing the poly-m-phenylenediamine@Aspergillus niger composite material in 500-3000ppm of AgNO 3 standing in the solution, followed by drying treatment and carbonization treatment at 400-1000° C. to obtain the Ag@C three-dimensiona...

Embodiment 1

[0082] The material preparation of the Ag@C three-dimensional electrode: put 3g of Aspergillus niger in a 100mL beaker, add 50mL of deionized water, then add 2g of m-phenylenediamine, and then add 2.202g of ammonium persulfate, react for 3 hours and then filter and form. After freeze-drying, the resulting poly-m-phenylenediamine@Aspergillus niger composite was placed in 2000ppm AgNO 3 Stand in the solution for 24 hours, dry at 60°C, and then carbonize at 800°C to obtain the Ag@C three-dimensional electrode material.

[0083] The internal structure and element distribution of the prepared Ag@C three-dimensional electrode material can be referred to Figure 9 (converted from the color picture) to understand, it can be seen that its interior is a filamentous structure and has large gaps for ion adsorption; in addition, the specific values ​​​​of the element distribution of the Ag@C three-dimensional electrode material are as follows:

[0084]

[0085]

Embodiment 2

[0087] Such as figure 1 , image 3 , Figure 4 and Figure 7 As shown, a stacked three-dimensional rocking chair capacitive deionization device includes a main body and accessories. The main body includes a chamber mechanism 1 , a cation exchange membrane 3 , a current collector 16 , and a silica gel gasket 2 .

[0088] Wherein, the chamber mechanism 1 further includes two terminal chamber mechanisms located at both ends of the stacking direction. In addition, the above-mentioned accessories are mainly fixed installation parts, including silicone tubes and screws.

[0089] Set the silica gel gasket 2 on the right side of the left terminal chamber mechanism, set the silica gel gasket 2 on the left side of the right terminal chamber mechanism, and set the commercial cation exchange membrane 3 between the two silica gel gaskets 2; Wherein, the size of each terminal chamber mechanism, each silica gel gasket 2 and cation exchange membrane 3 is the same, and the outer edges are ...

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Abstract

The invention provides a stacked three-dimensional rocking chair type capacitive deionization device. The deionization device comprises a plurality of cavity mechanisms sequentially arranged in the stacking direction, wherein each cavity mechanism comprises a body and a cavity which is formed in the body and penetrates through the body in the stacking direction, and a fixing part for fixing a three-dimensional electrode convexly extends on the inner wall of the cavity; sealing plates are arranged on the free end surfaces of the cavities at the two ends in the stacking direction; at least one of the adjacent three-dimensional electrodes is a blocky Ag@C three-dimensional electrode; a cation exchange membrane is arranged between every two adjacent cavity mechanisms; a current collector electrically connected with the three-dimensional electrode is further arranged on each cavity mechanism, the current collectors extend out of the body, and a water inlet pipeline and a water outlet pipeline which are communicated with the cavity are further arranged on the body. According to the invention, by means of changing the current direction of the current collector in the cavity mechanism, large-scale concentration and purification can be continuously carried out, the treatment capacity is large, and the efficiency is high.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a stacked three-dimensional rocking chair type capacitive deionization device and a deionization method. Background technique [0002] Capacitive Deionization (CDI) is a new method for removing pollutants in wastewater. Capacitive deionization technology is to apply a low voltage (generally about 1.2V) on a pair of electrodes, and use electrostatic interaction or chemical reaction to store ions in wastewater at the electrode / electrolyte interface to form an electric double layer or electrode material, and then pass through the disconnection Regeneration is achieved by means of electricity or by reversing the electric field. Although it has the advantages of low cost and no secondary pollution, however, the traditional capacitive deionization device requires a separate regeneration step to release the ions adsorbed on the electrode, and cannot realize the continuous operation of ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/469
CPCC02F1/4691C02F1/46109C02F2001/46133C02F2201/46115C02F2001/46152
Inventor 王海鹰贺颖捷柴立元严律己金林锋杨志辉刘恢唐崇俭
Owner CENT SOUTH UNIV
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