Composite membrane polar plate for circulating water treatment

Abstract

The utility model relates to a composite membrane polar plate for circulating water treatment and belongs to the technical field of water treatment. Metal ions released by the soluble metal plate are combined with pollutants in circulating water to form large-particle flocs, and the directional migration effect of the selective permeable membrane is combined, so that the density of the flocs is increased, the concentration multiple of the circulating water and the settling velocity of the flocs are greatly improved, the settling time and the occupied area of equipment are reduced, and the cost is reduced. The problem that the maintenance workload is large is solved, meanwhile, the dosage of chemicals is reduced, and secondary chemical pollution is further reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to water treatment technical field, concretely relates to a circulating water treatment composite membrane pole plate. BACKGROUND

[0002] Circulating water system as the core component of industrial production, its water quality stability directly influences equipment operation efficiency and energy consumption level. Along with the improvement of environmental protection requirement, electrochemical water treatment technology because of its environmental friendly characteristic receives extensive attention.

[0003] However, at present in the process of electrochemical mode treatment circulating water, because electrolytic cell generally adopts single filter membrane or static precipitation technology, there is the problem of low concentration multiple, large equipment floor area and big maintenance workload;Secondly, the dosage is big, not only need to add slow-release scale inhibitor, also need to add sulfuric acid regularly to reduce alkalinity, and add oxidizing bactericide and non-oxidizing bactericide, there is the problem of secondary pollution caused by reagent residue, big sludge production. UTILITY MODEL CONTENTS

[0004] In order to overcome the problem of low concentration multiple, large equipment floor area and big maintenance workload of the electrolytic cell generally adopting single filter membrane or static precipitation technology in the background art, and the problem of big dosage, not only need to add slow-release scale inhibitor, also need to add sulfuric acid regularly to reduce alkalinity, and add oxidizing bactericide and non-oxidizing bactericide, there is the problem of secondary pollution caused by reagent residue, big sludge production, the utility model provides a circulating water treatment composite membrane pole plate;The metal ions released by the soluble metal plate combine with the pollutants in circulating water to form large particle flocs, and the directional migration of the selective permeation membrane increases the density of the flocs, greatly improves the concentration multiple of the circulating water and the settling velocity of the flocs, thereby reducing the sedimentation time and the equipment floor area, solving the problem of big maintenance workload, at the same time, reducing the amount of reagent, further reducing secondary chemical pollution.

[0005] To achieve the above object, the utility model is realized through the following technical scheme: a circulating water treatment composite membrane pole plate mainly includes selective permeation membrane, soluble metal plate and clamping piece assembly, the selective permeation membrane and the soluble metal plate form a composite layer structure through edge splicing;The clamping piece assembly includes mutually matched upper clamping piece and lower clamping piece, and the upper clamping piece and the lower clamping piece clamp and fix the edges of the selective permeation membrane and the soluble metal plate through bolts, forming a detachable integral type pole plate structure.

[0006] The soluble metal plate is magnesium alloy plate or aluminum alloy plate.

[0007] The surface of the soluble metal plate is uniformly distributed with micropores, and the micropore diameter is 0.1-0.3mm.

[0008] The upper clamping sheet and the lower clamping sheet are provided with rectangular frame structures, and a rectangular limiting groove is formed in the inner side of the lower clamping sheet, and the depth of the rectangular limiting groove is less than the thickness of the selectively permeable membrane and the soluble metal plate.

[0009] The upper clamping sheet and the lower clamping sheet are provided with rectangular frame structures, and a rectangular limiting groove is formed in the inner side of the lower clamping sheet, and the depth of the rectangular limiting groove is less than the thickness of the selectively permeable membrane and the soluble metal plate.

[0010] The edge of the selectively permeable membrane is bonded to the edge of the soluble metal plate through a hot melt adhesive layer.

[0011] The upper clamping sheet and the lower clamping sheet are provided with rectangular frame structures, and a rectangular limiting groove is formed in the inner side of the lower clamping sheet, and the depth of the rectangular limiting groove is less than the thickness of the selectively permeable membrane and the soluble metal plate.

[0012] The upper clamping sheet and the lower clamping sheet are provided with rectangular frame structures, and a rectangular limiting groove is formed in the inner side of the lower clamping sheet, and the depth of the rectangular limiting groove is less than the thickness of the selectively permeable membrane and the soluble metal plate. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a three-dimensional schematic view of the utility model.

[0014] Figure 2 is another three-dimensional schematic view of the utility model.

[0015] Figure 3 is an exploded view of the utility model.

[0016] Figure 4 is a partial enlarged view of the clamping state of the clamping assembly.

[0017] Figure 5 is a working principle diagram of the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and beneficial effects of the utility model more clear, the preferred embodiments of the utility model will be explained in detail below with reference to the drawings, so as to facilitate the understanding of the technical personnel.

[0019] The utility model discloses a kind of composite membrane pole of circulating water treatment, the composite membrane pole of one kind of circulating water treatment mainly includes selectively permeable membrane 1, soluble metal plate 2 and clamping assembly 3, the soluble metal plate 2 and selectively permeable membrane 1 are formed into composite layer structure by edge splicing;The clamping assembly 3 includes mutually matched upper clamping sheet 31 and lower clamping sheet 32, and the edge of selectively permeable membrane 1, soluble metal plate 2 is clamped and fixed by bolt by upper clamping sheet 31 and lower clamping sheet 32, forms detachable integrated pole structure;

[0020] In use, the composite membrane electrode plate is vertically installed in the electrolytic cell, and the circulating water enters the reaction tank body through the inlet of the electrolytic cell, and then enters the gap between the electrode plates. Under the action of the direct current electric field, the ions in the circulating water between the cathode plate and the anode plate pass through the two sides of the selective permeation membrane 1 at the lower part of the composite membrane electrode plate, forming high-concentration alkaline water on the side of the cathode plate and high-concentration acid washing water on the side of the anode plate. As the water flows upward, the fine particles contained in the alkaline water combine with the metal ions released by the soluble metal plate 2 at the upper part of the composite membrane electrode plate, which have flocculation effect, to generate large particle floc particles that are easy to precipitate into the sedimentation tank. Under the action of the electric field, when the metal electrode generates cations into the water body, there are three continuous stages from the generation of ions to the formation of floc, which are: first, under the action of the electric field, the anode generates electrons to form "micro-flocculants", i.e. iron or aluminum hydroxide; second, the suspended particles and colloidal pollutants in the water lose stability under the action of the flocculants; finally, the de-stabilized pollutant particles and micro-flocculants collide with each other to form large flocs visible to the naked eye. Since the product of the electrocoagulation process is only ions, no additional chemical agents are required, the amount of sludge produced is small, and the moisture content of the sludge is low, making it easy to handle.

[0021] The soluble metal plate 2 is a magnesium alloy plate or an aluminum alloy plate; both magnesium alloy and aluminum alloy have good electrical conductivity and can provide the required electrons for the electrochemical process.

[0022] The soluble metal plate 2 has micro-holes uniformly distributed on its surface, with a diameter of 0.1-0.3mm; this can increase the surface area of metal ion release and improve the interaction efficiency of the soluble metal plate 2 with the surrounding environment.

[0023] The upper clamping piece 31 and the lower clamping piece 32 are provided in a rectangular frame structure, the inner side of the lower clamping piece 32 is provided with a rectangular limiting groove 321, the depth of the rectangular limiting groove 321 is less than the thickness of the selective permeation membrane 1 and the soluble metal plate 2; the four corners of the upper clamping piece 31 and the lower clamping piece 32 are provided with corresponding positioning holes 322; the upper clamping piece 31 and the lower clamping piece 32 are connected together by bolts, which can provide stable support and fixation for the installation of the selective permeation membrane 1 and the soluble metal plate 2, and at the same time, facilitate the overall taking when replacing the composite membrane electrode plate.

[0024] The edge of the selective permeation membrane 1 is bonded to the edge of the soluble metal plate 2 through a hot melt adhesive layer 11; this can prevent the selective permeation membrane 1 and the soluble metal plate 2 from separating or shifting during use, which is conducive to increasing the structural stability of the entire assembly.

[0025] Working process:

[0026] In use, the composite membrane electrode plate is vertically installed in the electrolytic cell, and the circulating water enters the gap between the electrode plates after entering the reaction tank body through the inlet of the electrolytic cell, and under the action of the direct current electric field, the ions in the circulating water between the cathode plate and the anode plate pass through the two sides of the selective permeation membrane 1 at the lower part of the composite membrane electrode plate, forming high-concentration alkaline water on the side of the cathode plate and high-concentration acid washing water on the side of the anode plate, and as the water flows upward, the fine particles contained in the alkaline water combine with the metal ions released by the soluble metal plate 2 at the upper part of the composite membrane electrode plate to generate large-particle flocculation particles that are easy to precipitate and enter the sedimentation tank for precipitation.

[0027] Under the action of the electric field, when the metal electrode generates cations into the water body, from the generation of ions to the formation of flocculation, there are three continuous stages: first, under the action of the electric field, the anode generates electrons to form "micro-flocculants", that is, iron or aluminum hydroxide; second, the suspended particles and colloidal pollutants in the water lose stability under the action of the flocculants; and finally, the de-stabilized pollutant particles and micro-flocculants collide with each other to form large flocculation particles visible to the naked eye. Since the product of the electrolytic reaction in the electric flocculation process is only ions, it does not need to add any chemical reagent, the amount of sludge generated is small, and the moisture content of the sludge is low, which is easy to handle.

[0028] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application.

Claims

1. A circulating water treatment composite electrode plate, characterized in that: The composite membrane electrode plate for circulating water treatment comprises a selective permeation membrane (1), a soluble metal plate (2) and a clamping piece assembly (3), the selective permeation membrane (1) and the soluble metal plate (2) are spliced by edges to form a composite layer structure, the clamping piece assembly (3) comprises an upper clamping piece (31) and a lower clamping piece (32) which are matched with each other, the upper clamping piece (31) and the lower clamping piece (32) clamp and fix the edges of the selective permeation membrane (1) and the soluble metal plate (2) through bolts to form a detachable integral type electrode plate structure.

2. The circulating water treatment composite electrode plate according to claim 1, characterized in that: The soluble metal plate (2) is a magnesium alloy plate or an aluminum alloy plate.

3. The composite plate for a circulating water treatment according to claim 1 or 2, wherein: The soluble metal plate is uniformly distributed with micropores on the surface, and the diameter of the micropores is 0.1-0.3 mm.

4. The circulating water treatment composite plate of claim 1, wherein: The upper clamping piece (31) and the lower clamping piece (32) are provided with a rectangular frame structure, and a rectangular limiting groove (321) is arranged on the inner side of the lower clamping piece (32), and the depth of the rectangular limiting groove (321) is less than the thickness of the selective permeation membrane (1) and the soluble metal plate (2).

5. The composite plate of claim 1 or 4, wherein: The four corners of the upper clamping piece (31) and the lower clamping piece (32) are provided with corresponding positioning holes (322).

6. The circulating water treatment composite plate of claim 3, wherein: The edge of the selective permeation membrane (1) is bonded with the edge of the soluble metal plate (2) through a hot melt adhesive layer (11).

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