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An ion-conductive polymer-based separation membrane element and its membrane separation module

An ionic conductivity, membrane separation module technology, applied in semi-permeable membrane separation, membrane technology, osmotic/dialysis water/sewage treatment, etc. Scope and other issues, to achieve the effect of improving separation efficiency and economic applicability, promoting large-scale application and development, increasing packing density and effective area

Inactive Publication Date: 2017-03-01
JINGDEZHEN CERAMIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inorganic conductive ceramic materials used in this technology have problems such as difficult control of the synthesis process, difficulty in controlling the pore size of the inorganic membrane, and low permeation flux, which limits the scope of its industrial application.
At the same time, due to the rigidity and brittleness of inorganic materials, the assembly design is limited, the packing density is low, the effective area is small, and the operating cost is high, making it difficult to achieve large-scale application

Method used

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  • An ion-conductive polymer-based separation membrane element and its membrane separation module
  • An ion-conductive polymer-based separation membrane element and its membrane separation module
  • An ion-conductive polymer-based separation membrane element and its membrane separation module

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Embodiment 1

[0027] Figure 1 ~ Figure 3 Shown is an embodiment of an ion-conductive polymer-based separation membrane element of the present invention, including an electronically-conductive grid membrane 1 , an electrode plate 2 , and a polymer-based separation membrane 3 with ion conductivity.

[0028] Such as figure 1 with figure 2 As shown, the separation membrane 3 is flat, and at least one surface plane is a functional layer for separation. At least the functional layer of the separation membrane 3 has ion conductivity, and the resistivity is 3-2000Ω·cm.

[0029] The thickness of the functional layer of the separation membrane 3 is 0.1-200 μm, and the pore diameter is 0-100 nm. The separation membrane 3 can be a dense membrane, such as an ion exchange membrane with ion conductivity, a charged reverse osmosis membrane, a charged nanofiltration membrane, or a porous membrane, such as a charged ultrafiltration membrane or a charged microfiltration membrane.

[0030] The material of...

Embodiment 2

[0035] Figure 4 Shown is the embodiment of the plate-and-frame ion-conductive polymer-based membrane separation module of the present invention, such as Figure 4 As shown, it is a plate-and-frame module composed of one or more membrane separation units 4 . The membrane separation unit 4 is composed of the two separation membrane elements of the first embodiment, and the electrode plates 2 of the two separation membrane elements are the same electrode plate. The membrane separation units 4 are arranged in parallel at intervals.

Embodiment 3

[0037] Figure 5 Shown is the embodiment of the roll-type ion-conductive polymer-based membrane separation module of the present invention, which is composed of one or more than one membrane separation unit 4 (see Figure 4 ) composed of roll components. The three sides of the membrane separation unit 4 are sealed and one side is open to form a separation membrane bag; each separation membrane bag is stacked at intervals, and one side of the opening is fixedly connected to the central tube with a through hole in the tube wall (see Figure 5 ), the bag body is coiled around the central tube to form a roll-type membrane separation module.

[0038] When in use, the feed liquid enters from one end of the module along the axial direction, passes through the interception and separation of the separation membrane 3, and the permeate passes through the separation membrane 3, passes through the gap with the electrode plate 2, and flows into the through hole from the opening side of th...

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Abstract

The invention discloses an ionic conductivity macromolecule-based separation membrane element. The ionic conductivity macromolecule-based separation membrane element comprises an electronic conduction grid membrane, an electrode plate and an ionic conductivity macromolecule-based separation membrane, wherein the separation membrane is a plane; at least one surface plane is a function layer for playing a role of separation; at least the function layer of the separation membrane has the ionic conductivity; the electronic conduction grid membrane is arranged on the surface plane of the function layer of the separation membrane; the electrode plate is arranged in clearance with the other surface plane of the separation membrane; the electronic conduction grid membrane and the electrode plate are respectively connected to two electrodes of an external direct-current power supply. In addition, the invention also discloses a membrane separation component using the separation membrane element. The separation membrane element is convenient to assemble and control; by introducing an external direct-current electric field, the interception and the removal of ions are improved, thus the interception rate of the ions on the membrane is greatly improved, and the flux of the membrane is not reduced; meanwhile, the use cost is remarkably reduced and the economy is improved, thereby facilitating the implementation of large-scale application.

Description

technical field [0001] The invention relates to the field of membrane separation technology, in particular to an organic polymer-based separation membrane element and a membrane separation module suitable for seawater desalination, brackish water desalination, industrial wastewater ion removal, especially heavy metal ion removal and the like. Background technique [0002] Membrane separation process is a kind of speed separation process. It uses selective permeable membrane as the separation medium. When there is a certain driving force (such as pressure difference, concentration difference and potential difference, etc.) Under the action of force, different components have different permeability in the membrane, so that they can selectively permeate the membrane, and then achieve the purpose of separation and purification. Compared with the traditional separation method, this method not only has the advantages of high separation efficiency, low energy consumption, small foo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/06B01D63/00C02F1/44
Inventor 张小珍韩润林汪永清周健儿常启兵胡学兵
Owner JINGDEZHEN CERAMIC UNIV
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