Separation device and method for removing micro-nano scale solid impurities from aqueous solutions

Abstract

The present invention relates to the technical field of solid-liquid separation, and discloses a separation device and method for removing micro-nano scale solid impurities from an aqueous solution, including a separation pipeline; a power supply is electrically connected to an electrophoresis electrode and an auxiliary electrode. The electrophoresis electrode is arranged at the central axis of the separation pipeline, and the auxiliary electrode is arranged on the inner side wall of the separation pipeline. There is a gap between the electrophoresis electrode and the auxiliary electrode, and an electric field is constructed in the gap. When the liquid to be separated passes through the electric field, the solid impurity particles in the liquid to be separated move towards the electrophoresis electrode; an ultrasonic generator is electrically connected to a first ultrasonic device. The first ultrasonic device is arranged on the separation pipeline, and the output end of the first ultrasonic device faces the electric field, so that the ultrasonic wave formed by the first ultrasonic device is superimposed on the electric field; an output pipeline is arranged on the separation pipeline, and the output pipeline is communicated with the electric field in the separation pipeline. The present invention realizes the superimposed effect of ultrasonic and electrophoresis, greatly improves the concentration of impurities, improves the separation effect, and thus realizes the preparation of ultrapure water.

Description

Technical Field

[0001] The present invention relates to the technical field of solid-liquid separation, and in particular to a separation device and method for removing micro-nano solid impurities from an aqueous solution. Background Art

[0002] The separation of solid impurity particles in an aqueous solution is of great significance for ensuring product quality, maintaining the safety of industrial systems, protecting the environment and public health. For example, in the machinery industry, as a coolant and lubricant, if an aqueous solution contains a large number of solid particles, these particles will accumulate in equipment such as pipelines, pumps and heat exchangers, causing wear, reduced efficiency and even equipment damage. In food safety and public medical and health, solid particles such as sand grains and algal fragments in drinking water not only affect the taste of the water quality, but may also become carriers of pathogens. Through effective solid-liquid separation, the hygienic safety of drinking water can be ensured.

[0003] In products using high-purity aqueous solutions, the concentration of solid impurity particles is often very low. In existing methods, when the particle concentration is low, it is difficult to achieve effective separation through existing separation technologies. Summary of the Invention

[0004] The object of the present invention is to provide a separation device and method for removing micro-nano solid impurities from an aqueous solution, aiming to solve or improve at least one of the above technical problems.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a separation device for removing micro-nano solid impurities from an aqueous solution, including:

[0006] A separation pipeline, the inside of which is used for the flow of the liquid to be separated;

[0007] A power supply, which is electrically connected to an electrophoresis electrode and an auxiliary electrode. The electrophoresis electrode is arranged at the central axis of the separation pipeline, and the auxiliary electrode is arranged on the inner side wall of the separation pipeline. There is a gap between the electrophoresis electrode and the auxiliary electrode, and an electric field is constructed in the gap. When the liquid to be separated passes through the electric field, the solid impurity particles in the liquid to be separated move towards the electrophoresis electrode;

[0008] An ultrasonic generator, which is electrically connected to a first ultrasonic device. The first ultrasonic device is arranged on the separation pipeline, and the output end of the first ultrasonic device faces the electric field, so that the ultrasonic wave formed by the first ultrasonic device is superimposed on the electric field;

[0009] An output pipeline, which is arranged on the separation pipeline and is communicated with the electric field in the separation pipeline.

[0010] Optionally, a slidable baffle is provided at the port of the output pipeline facing the electric field.

[0011] Optionally, a plurality of output pipelines are provided.

[0012] Optionally, a plurality of the first ultrasonic devices are provided around the output pipeline.

[0013] Optionally, a first tank is further included, and the inside thereof is used for setting the liquid to be separated, and the first tank is communicated with one end of the separation pipeline.

[0014] Optionally, a second tank is further included, and the liquid to be separated is arranged inside the second tank. The second tank is communicated with the first tank through a first pipeline, and a pump is arranged on the first pipeline.

[0015] Optionally, the second tank is further communicated with the separation pipeline far away from the first tank through a second pipeline, and a flow switch is arranged on the second pipeline.

[0016] Optionally, a stirring device is further included and is arranged inside the second tank.

[0017] Optionally, a second ultrasonic device is further included and is arranged at the bottom of the second tank.

[0018] The present invention further provides a separation method for removing micro-nano solid impurities in an aqueous solution, including:

[0019] Inputting the liquid to be separated into the separation pipeline;

[0020] Outputting electrical parameters from the power supply to the electrophoresis electrode and the auxiliary electrode, so as to construct an electric field in the gap between the electrophoresis electrode and the auxiliary electrode. At the same time, outputting electrical parameters from the ultrasonic generator to the first ultrasonic device, so that the ultrasonic wave formed by the first ultrasonic device acts on the electric field, so that the solid impurity particles in the liquid to be separated passing through the electric field move towards the electrophoresis electrode;

[0021] Outputting the separated liquid to be separated through the output pipeline.

[0022] The present invention discloses the following technical effects: An electric field is constructed in the separation pipeline through a power supply, electrophoresis electrodes, and auxiliary electrodes to form an electrophoresis effect, so that the ultrafine solid impurities in the liquid to be separated passing through the separation pipeline move directionally towards the electrophoresis electrodes. At the same time, ultrasonic waves are generated by an ultrasonic generator and a first ultrasonic device to forcibly increase the local impurity concentration between the electrophoresis electrodes and the auxiliary electrodes, concentrate most of the nano-impurity particles around the electrophoresis electrodes, and the remaining liquid to be separated forms ultrapure water and is discharged through an output pipeline, realizing the superimposed effect of ultrasound and electrophoresis, greatly increasing the impurity concentration and improving the separation effect, thereby realizing the preparation of ultrapure water. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is a schematic diagram of the electrophoresis electrodes, auxiliary electrodes, and the first ultrasonic device of the present invention;

[0026] Figure 3 is a partial schematic diagram of the separation pipeline of the present invention;

[0027] Figure 4 is a schematic diagram of Embodiment 2 of the present invention.

[0028] In the figure: 1, separation pipeline; 2, power supply; 3, electrophoresis electrode; 4, auxiliary electrode; 5, ultrasonic generator; 6, first ultrasonic device; 7, output pipeline; 8, baffle; 9, first tank; 10, second tank; 11, first pipeline; 12, pump; 13, second pipeline; 14, flow switch; 15, stirring device; 16, second ultrasonic device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Embodiment 1, refer to Figures 1 - 3, the present invention provides a separation device for removing micro-nano solid impurities in an aqueous solution, comprising:

[0032] A separation pipeline 1, inside which the liquid to be separated flows;

[0033] A power supply 2, which is electrically connected to an electrophoresis electrode 3 and an auxiliary electrode 4. The electrophoresis electrode 3 is arranged at the central axis of the separation pipeline 1, the auxiliary electrode 4 is arranged on the inner side wall of the separation pipeline 1, there is a gap between the electrophoresis electrode 3 and the auxiliary electrode 4, an electric field is constructed in the gap, and when the liquid to be separated passes through the electric field, the solid impurity particles in the liquid to be separated move towards the electrophoresis electrode 3;

[0034] An ultrasonic generator 5, which is electrically connected to a first ultrasonic device 6. The first ultrasonic device 6 is arranged on the separation pipeline 1, and the output end of the first ultrasonic device 6 faces the electric field, so that the ultrasonic wave formed by the first ultrasonic device 6 is superimposed on the electric field;

[0035] An output pipeline 7, which is arranged on the separation pipeline 1, and the output pipeline 7 is communicated with the electric field inside the separation pipeline 1.

[0036] An electrophoresis effect is formed by constructing an electric field in the separation pipeline 1 through the power supply 2, the electrophoresis electrode 3 and the auxiliary electrode 4, so that the ultra-fine solid impurities in the liquid to be separated passing through the separation pipeline 1 move towards the electrophoresis electrode 3 directionally. At the same time, ultrasonic waves are generated by the ultrasonic generator 5 and the first ultrasonic device 6 to forcibly increase the local impurity concentration between the electrophoresis electrode 3 and the auxiliary electrode 4, concentrate most of the nano-impurity particles around the electrophoresis electrode 3, and the remaining liquid to be separated forms ultrapure water and is discharged by the output pipeline 7, realizing the superimposed effect of ultrasonic and electrophoresis, greatly increasing the impurity concentration and improving the separation effect, thereby realizing the preparation of ultrapure water.

[0037] Specifically, ultra-fine solid impurity particles can obtain a surface potential in the solution. There are mainly four ways to obtain the surface potential, including the dissociation or ionization of particle surface groups, ion adsorption, ion surfactant adsorption and isomorphic substitution. The charged impurity particles will form a charged colloidal nucleus, and the charged colloidal nucleus forms a diffuse double layer structure by attracting ions with opposite charges in the adjacent liquid phase. Under the action of the auxiliary electric field generated by the power supply 2, the electrophoresis electrode 3 and the auxiliary electrode 4, the solid phase and the liquid in the adjacent slip plane will move relatively to the liquid phase outside the slip plane. By controlling the parameters of the auxiliary electric field, the ultra-fine solid impurity particles in the detection liquid can be attracted to the vicinity of the electrophoresis electrode 3, thereby increasing the local area impurity concentration. At the same time, the ultrasonic wave generated by the first ultrasonic device 6 can push the impurity particles in the solution to gather at the nodes, and by controlling the ultrasonic parameters, the particles gather at the electrophoresis electrode 3, so as to facilitate the separation of ultra-low concentration impurity particles in the aqueous solution.

[0038] Furthermore, according to the actual situation, the polarities (positive and negative polarities) of the two electrophoresis electrodes 3 and the auxiliary electrode 4 can be changed to adapt to different particle types.

[0039] In a further optimized solution, a slidable baffle 8 is provided at the port of the output pipeline 7 facing the electric field.

[0040] The baffle 8 can select the sliding and telescoping amount according to the concentration of nano-impurities to ensure the collection of ultrapure water to the greatest extent.

[0041] In a further optimized solution, multiple output pipelines 7 are provided.

[0042] In a further optimized solution, a plurality of first ultrasonic devices 6 are provided around the output pipeline 7.

[0043] In a further optimized solution, it further includes a first tank 9, the inside of which is used to set the liquid to be separated, and the first tank 9 is connected to one end of the separation pipeline 1.

[0044] The first tank 9 is used to temporarily store the liquid to be separated, so that there is enough liquid to be separated flowing in the separation pipeline 1.

[0045] In a further optimized solution, it further includes a second tank 10, the inside of which is provided with the liquid to be separated, the second tank 10 is connected to the first tank 9 through a first pipeline 11, and a pump 12 is provided on the first pipeline 11.

[0046] The pump 12 can transport the liquid to be separated in the second tank 10 into the first tank 9, and by adjusting the relevant parameters of the pump 12, the liquid to be separated in the first tank 9 is maintained at the required capacity for detection.

[0047] In a further optimized solution, there is also a second pipeline 13 connecting the second tank 10 and the separation pipeline 1 far from the first tank 9, and a flow switch 14 is provided on the second pipeline 13.

[0048] By controlling the on-off of the flow switch 14, the reflux of the separated liquid to be separated still containing solid impurity particles and the output of waste liquid are controlled.

[0049] In a further optimized solution, it further includes a stirring device 15, which is arranged in the second tank 10.

[0050] Through the rotation of the blades of the stirring device 15, the ultrafine solid impurity particles in the liquid to be separated in the second tank 10 are evenly distributed in the liquid to be separated.

[0051] In a further optimized solution, it further includes a second ultrasonic device 16, which is arranged at the bottom of the second tank 10.

[0052] The second ultrasonic device 16 is internally provided with an oscillator for high-frequency ultrasonic vibration. By adjusting the ultrasonic power supply connected thereto, the adjustment of ultrasonic vibration and the adjustment of the output amplitude can be achieved. The second ultrasonic device 16 assists the stirring device 15 to evenly distribute the impurity particles in the liquid to be separated, ensuring the accuracy of detection.

[0053] Furthermore, both the electrophoresis electrode 3 and the auxiliary electrode 4 are made of metal.

[0054] Furthermore, the electrophoresis electrode 3 is in the shape of a long filament.

[0055] Furthermore, the auxiliary electrode 4 is in a net shape, sheet shape or ring shape, and can be flexibly changed according to the size and shape of the detection separation pipeline 1.

[0056] The present invention also provides a separation method for removing micro-nano scale solid impurities in an aqueous solution, including:

[0057] The impurity particles in the liquid to be separated are evenly distributed by the stirring device 15 and the second ultrasonic device 16.

[0058] The liquid to be separated in the second tank 10 is pumped into the first tank 9 by the pump 12 to input the liquid to be separated into the separation pipeline 1;

[0059] The power supply 2 outputs electrical parameters to the electrophoresis electrode 3 and the auxiliary electrode 4, so as to construct an electric field in the gap between the electrophoresis electrode 3 and the auxiliary electrode 4. At the same time, the ultrasonic generator 5 outputs electrical parameters to the first ultrasonic device 6, so that the ultrasonic wave formed by the first ultrasonic device 6 acts on the electric field, so that the solid impurity particles in the liquid to be separated passing through the electric field move towards the electrophoresis electrode 3;

[0060] The liquid to be separated after the solid impurity particles are adsorbed by the electrophoresis electrode 3 forms ultrapure water, and the ultrapure water formed by the separated liquid to be separated is output through the output pipeline 7;

[0061] The liquid to be separated still containing solid impurity particles after separation flows back into the second tank 10 or is directly discharged.

[0062] Furthermore, in the present invention, the electrophoresis electrode 3, the auxiliary electrode 4 and the first ultrasonic device 6 can be applied separately or in combination.

[0063] Example 2, referring to Figure 4 , the difference between this embodiment and Embodiment 1 is that it further includes a plurality of first tanks 9 connected to the separation pipeline 1, and the plurality of first tanks 9 are used to communicate with a plurality of output pipelines 7, so as to form a secondary filtration system, and the output pipeline 7 in the secondary filtration system can communicate with another first tank 9 connected to the separation pipeline 1. In this way, a multi-stage filtration system can be formed.

[0064] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0065] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A separation device for removing micro-nano scale solid impurities in an aqueous solution, characterized in that, Comprising: A separation pipeline (1) whose interior is for the flow of the liquid to be separated; A power supply (2) electrically connected to an electrophoresis electrode (3) and an auxiliary electrode (4). The electrophoresis electrode (3) is disposed at the central axis of the separation pipeline (1), and the auxiliary electrode (4) is disposed on the inner sidewall of the separation pipeline (1). There is a gap between the electrophoresis electrode (3) and the auxiliary electrode (4), and an electric field is constructed within the gap. When the liquid to be separated passes through the electric field, the solid impurity particles in the liquid to be separated move towards the electrophoresis electrode (3); An ultrasonic generator (5) electrically connected to a first ultrasonic device (6). The first ultrasonic device (6) is disposed on the separation pipeline (1), and the output end of the first ultrasonic device (6) faces the electric field, so that the ultrasonic waves formed by the first ultrasonic device (6) are superimposed on the electric field; An output pipeline (7) disposed on the separation pipeline (1), and the output pipeline (7) is in communication with the electric field within the separation pipeline (1); A slidable baffle (8) is disposed at the port of the output pipeline (7) facing the electric field; A plurality of the first ultrasonic devices (6) are disposed around the output pipeline (7).

2. The separation device for removing micro-nano scale solid impurities from an aqueous solution according to claim 1, characterized in that: A plurality of the output pipelines (7) are provided.

3. The separation device for removing micro-nano scale solid impurities from an aqueous solution according to claim 1, wherein: It further includes a first tank (9) whose interior is for setting the liquid to be separated, and the first tank (9) is in communication with one end of the separation pipeline (1).

4. A separation device for removing micro-nano scale solid impurities from an aqueous solution according to claim 3, characterized in that: It further includes a second tank (10) whose interior is provided with the liquid to be separated. The second tank (10) is in communication with the first tank (9) through a first pipeline (11), and a pump (12) is disposed on the first pipeline (11).

5. A separation device for removing micro-nano scale solid impurities from an aqueous solution according to claim 4, characterized in that: The second tank (10) is further in communication with the separation pipeline (1) away from the first tank (9) through a second pipeline (13), and a flow switch (14) is disposed on the second pipeline (13).

6. The separation device for removing micro-nano scale solid impurities from an aqueous solution according to claim 4, characterized in that: It further includes a stirring device (15) disposed within the second tank (10).

7. A separation device for removing micro-nano scale solid impurities from an aqueous solution according to claim 4, characterized in that: It further includes a second ultrasonic device (16) disposed at the bottom of the second tank (10).

8. A separation method for removing micro-nano scale solid impurities from an aqueous solution, based on the separation device for removing micro-nano scale solid impurities from an aqueous solution according to any one of claims 1-7, characterized in that, Comprising: Inputting the liquid to be separated into the separation pipeline (1); Outputting electrical parameters from the power supply (2) to the electrophoresis electrode (3) and the auxiliary electrode (4), so that an electric field is constructed within the gap between the electrophoresis electrode (3) and the auxiliary electrode (4). Meanwhile, outputting electrical parameters from the ultrasonic generator (5) to the first ultrasonic device (6), so that the ultrasonic waves formed by the first ultrasonic device (6) act on the electric field, so that the solid impurity particles in the liquid to be separated passing through the electric field move towards the electrophoresis electrode (3); Outputting the separated liquid to be separated through the output pipeline (7).

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