CN114273343A - In-situ electrofluidic decontamination method and application - Google Patents

Abstract

The invention relates to an in-situ electro-bubble decontamination method and application. Aiming at the problem of surface contamination of conductive materials, the present invention proposes a simple and environmentally friendly new strategy of "in-situ electro-bubble decontamination", which utilizes the exfoliation of in-situ generated bubbles on the surface of the material to remove the contaminants adhering to the surface of the material, forming a new strategy based on in-situ electric bubbles. New technology for bubble-causing decontamination strategies. The decontamination method proposed by the invention is applicable to all conductive materials that need decontamination, and has a good application prospect in actual industrial production.

Description

A kind of in-situ electro-bubble decontamination method and application

technical field

The invention relates to an in-situ electro-bubble decontamination method and application.

Background technique

Contamination on the material surface can seriously affect the performance of the material. For example, the fouling and blockage of the oil-water separation membrane surface will cause the membrane separation efficiency to drop sharply or even fail. Materials in other fields also commonly have the problem of performance failure due to surface contamination.

Aiming at the problem of surface contamination of conductive materials, the present invention proposes a simple and environmentally friendly new strategy of "in-situ electro-bubble decontamination", which utilizes the peeling action of in-situ generated bubbles on the surface of the material to remove the contaminants adhered to the surface of the material, and forms an in-situ electric bubble-based decontamination method. New technology for bubble-causing decontamination strategies. The decontamination method proposed by the invention is applicable to all conductive materials that need decontamination, and has a good application prospect in actual industrial production.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a simple and environmentally friendly in-situ electronically controlled bubble decontamination method, which is suitable for all conductive materials that need decontamination.

The implementation process of the present invention is briefly explained below. First, a conductive aqueous solution is prepared for the water electrolysis reaction; then, the contaminated conductive material is immersed in the conductive aqueous solution and connected to the cathode of the DC power supply, and at the same time, the inert electrode connected to the anode of the DC power supply is also immersed in the conductive aqueous solution, and Adjust the position and distance of the cathode and anode of the power supply; then, adjust the current/voltage value of the power supply to generate micro-nano bubbles on the surface of the contaminated conductive material in situ, and use the peeling effect of the in-situ bubbles to remove the pollutants on the surface of the material.

The present invention relates to an in-situ electro-bubble decontamination method and application, which are realized through the following specific steps:

(1) Select inorganic salts, such as sodium sulfate, etc., and mix them with water in a certain proportion to form a conductive aqueous solution for electrolysis of water.

(2) The contaminated conductive material is immersed in the above-mentioned conductive aqueous solution and connected with the cathode of the DC power supply, and the power supply cathode can protect the conductive material from being oxidized and damaged; at the same time, the inert electrode connected with the anode of the DC power supply is also immersed in the above-mentioned conductive aqueous solution, and Adjust the position and distance of the cathode and anode of the power supply.

(3) Adjust the current/voltage value of the power supply to generate micro-nano bubbles on the surface of the contaminated conductive material in situ, and use the peeling effect of the in-situ bubbles to remove the pollutants on the surface of the material.

The purpose of the present invention is to provide a simple and environmentally friendly in-situ electronically controlled bubble decontamination method. This method is suitable for all conductive materials that require decontamination.

Description of drawings:

Figure 1 Picture of metal mesh to which crude oil adheres.

Fig. 2 is a process diagram of in-situ electro-bubble removal of the crude oil adhering to the surface of the metal mesh.

Figure 3 is a photo of the metal mesh after the in-situ electro-bubble completely removes the crude oil adhering to the surface of the metal mesh.

Detailed ways:

The present invention will be described in detail below with reference to the accompanying drawings and implementation examples.

Example 1, taking in-situ electro-bubble to remove oil stains adhering to the surface of the conductive metal mesh film as an example.

Dissolve 20 grams of sodium sulfate in 1 liter of deionized water to prepare a sodium sulfate solution; then vertically immerse the metal mesh contaminated by oil adhesion into the sodium sulfate solution and connect it with the cathode of the DC power supply; at the same time, connect it with the anode of the DC power supply. The connected carbon rods were also immersed in the sodium sulfate solution, and the distance between the anode carbon rods and the cathode metal mesh was adjusted to 5 cm; then the power was turned on, and the voltage value was set to 20 volts, so that the contaminated metal mesh surface was generated in situ Micro-nano bubbles use the peeling action of in-situ bubbles to remove the oil stains on the surface of the metal mesh; until the oil stains on the surface of the metal mesh are completely removed, turn off the power and take out the metal mesh.

In Example 2, in-situ electro-bubble removal of contaminants on the surface of a metal block is taken as an example.

Dissolve 14 grams of sodium sulfate in 1 liter of deionized water to prepare a sodium sulfate solution; then immerse the contaminated metal block in the sodium sulfate solution and connect it to the cathode of the DC power supply; at the same time, connect the platinum sheet connected to the anode of the DC power supply It is also immersed in sodium sulfate solution, and the distance between the anode platinum sheet and the cathode metal block is adjusted to 10 cm; then the power is turned on, and the voltage value is set to 50 volts, so that the surface of the contaminated metal block can generate micro-nano in situ Air bubbles, remove the contaminants attached to the surface of the metal block by the peeling action of the in-situ air bubbles; turn off the power until the contaminants on the surface of the metal block are completely removed, and take out the metal block.

Figure 1 Picture of metal mesh to which crude oil adheres. As can be seen from the figure, the surface of the metal mesh is completely adhered and covered by crude oil, and it is difficult to remove spontaneously.

Figure 2 is a process diagram of the process of removing the crude oil adhering to the surface of the metal mesh by electro-bubble. It can be seen from the figure that the air bubbles are preferentially generated from the edge area of the metal mesh, and the oil stains adhering to the surface of the metal mesh are gradually taken away during the floating process.

Figure 3 is a photo of the metal mesh after the in-situ electro-bubble completely removes the crude oil adhering to the surface of the metal mesh. It can be seen from the figure that after in-situ electro-bubble decontamination, all the oil stains on the surface of the metal mesh are removed, and the metal mesh is restored to its original clean state.

Claims (1)

1. An in-situ electro-bubble decontamination method and application, which are specifically realized through the following steps: (1) Select inorganic salts, such as sodium sulfate, etc., and mix them with water in a certain proportion to form a conductive aqueous solution for electrolysis of water. (2) The contaminated conductive material is immersed in the above-mentioned conductive aqueous solution and connected with the cathode of the DC power supply, and the power supply cathode can protect the conductive material from being oxidized and damaged; at the same time, the inert electrode connected with the anode of the DC power supply is also immersed in the above-mentioned conductive aqueous solution, and Adjust the position and distance of the cathode and anode of the power supply. (3) Adjust the current/voltage value of the power supply to generate micro-nano bubbles on the surface of the contaminated conductive material in situ, and use the peeling effect of the in-situ bubbles to remove the pollutants on the surface of the material. (4) The purpose of the present invention is to provide a simple and environmentally friendly in-situ electronically controlled bubble decontamination method. This method is suitable for all conductive materials that need to be decontaminated.

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