Ultrasonic vibration type self-cleaning membrane device and water treatment device

Abstract

The utility model provides a kind of ultrasonic vibration type self-cleaning membrane device and water treatment device, belong to water treatment technical field, comprising: membrane module, ultrasonic vibration device and pollution monitoring sensor, water inlet, water outlet, thick water outlet and blowdown are provided on membrane module;Ultrasonic vibration device is set on the support frame of membrane module;Pollution monitoring sensor is set on membrane module, for monitoring the membrane flux and pollution degree of membrane module, pollution monitoring sensor is electrically connected with ultrasonic vibration device.When reaching set threshold value, device can automatically start ultrasonic vibration cleaning according to membrane pollution degree, stop the normal work of membrane module, realize efficient cleaning, without manual intervention, realize intelligent operation.The ultrasonic vibration type self-cleaning membrane device provided by the utility model solves the problem that ultrasonic cleaning technology cannot regulate working state according to the pollution degree of membrane.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, specifically to an ultrasonic vibration self-cleaning membrane device and a water treatment device. Background Technology

[0002] Membrane technology is widely used in seawater desalination, wastewater treatment, and drinking water purification. However, membranes are easily clogged by contaminants (such as organic matter, inorganic salts, and microorganisms) during use, leading to decreased membrane flux, increased energy consumption, and even shortened membrane lifespan. Traditional cleaning methods include chemical and physical cleaning, but chemical cleaning may damage the membrane material, while physical cleaning (such as backwashing) has limited effectiveness and is difficult to completely remove contaminants. Ultrasonic technology, due to its high efficiency and environmental friendliness, has been widely used in the cleaning field.

[0003] In existing technologies, ultrasonic technology is applied to membrane cleaning, and is usually set to be started periodically or manually.

[0004] However, the above methods cannot adjust the working status in a timely manner according to the degree of membrane fouling, which increases energy consumption and affects the service life of the membrane. Utility Model Content

[0005] Therefore, the technical problem to be solved by this utility model is to overcome the problem that ultrasonic cleaning technology cannot adjust its working state according to the degree of membrane fouling, thereby providing an ultrasonic vibration self-cleaning membrane device and a water treatment device.

[0006] To address the aforementioned technical problems, this utility model provides an ultrasonic vibration self-cleaning membrane device, comprising: a membrane module, an ultrasonic vibration device, and a fouling monitoring sensor. The membrane module is provided with an inlet, an outlet, a concentrate outlet, and a wastewater outlet. The ultrasonic vibration device is mounted on a support frame of the membrane module. The fouling monitoring sensor is mounted on the membrane module and is used to monitor the membrane flux and fouling level of the membrane module. The fouling monitoring sensor is electrically connected to the ultrasonic vibration device.

[0007] In operation, the water to be treated enters the membrane module through the inlet, the filtered clean water is discharged from the outlet, and the concentrated wastewater is discharged from the concentrate outlet. After a period of continuous filtration, the membrane module becomes clogged with contaminants, causing a decrease in membrane flux. A contamination monitoring sensor monitors the membrane flux and the degree of fouling. When a set threshold is reached, the membrane module stops normal operation and an ultrasonic vibration device is activated. This device uses high-frequency ultrasonic vibration to generate micro-vibrations on the membrane surface, disrupting the adhesion between contaminants and the membrane surface. Contaminants detached during the ultrasonic cleaning process are discharged through the drain outlet, achieving efficient cleaning. The device can automatically initiate ultrasonic vibration cleaning based on the degree of membrane fouling, requiring no manual intervention and achieving intelligent operation. This invention provides an ultrasonic vibration self-cleaning membrane device that solves the problem that ultrasonic cleaning technology cannot adjust its operating state according to the degree of membrane fouling.

[0008] Optionally, the sensing end of the pollution monitoring sensor is located at the inlet or outlet of the membrane module. This configuration allows for real-time monitoring of membrane flux and pollution levels, and the activation and deactivation of the ultrasonic vibration device can be adjusted based on the pollution situation.

[0009] Optionally, the system further includes a control module, wherein the membrane module, the ultrasonic vibration device, and the contamination monitoring sensor are electrically connected to the control module. The control module controls the ultrasonic vibration device to adjust its power output, vibration frequency, and duration. Through this configuration, the contamination monitoring sensor transmits data to the control module. The control module determines whether to activate the ultrasonic vibration device based on the data. If the ultrasonic vibration device is activated, the normal operation of the membrane module is simultaneously stopped. The control module then adjusts the power output, vibration frequency, and duration of the ultrasonic vibration device according to the data from the contamination monitoring sensor to adapt to different levels of contamination and membrane material characteristics. After cleaning, the control module stops the ultrasonic vibration device and restores the membrane module to normal operation.

[0010] Optionally, the vibration frequency range of the ultrasonic vibration device is from 20kHz to 100kHz. This setting allows for the selection of the optimal vibration frequency for different types of contaminants, improving the cleaning effect.

[0011] Optionally, the ultrasonic vibration device is configured as an integrated structure with multiple ultrasonic generators, each ultrasonic generator being configured with at least one vibration frequency. With this configuration, the ultrasonic vibration device can thoroughly clean the membrane module using a combination of ultrasonic waves at different vibration frequencies. Furthermore, the integrated module design of the ultrasonic vibration device makes it suitable for membrane modules of different specifications, offering broad applicability.

[0012] Optionally, the membrane module is equipped with electrically adjustable valves at its inlet, outlet, concentrate outlet, and drain outlet, and these valves are electrically connected to the control module. With this configuration, when the membrane module is operating normally, the control module controls the electrically adjustable valves at the inlet, outlet, and concentrate outlet to open, and the electrically adjustable valve at the drain outlet to close. When the ultrasonic vibration device is activated, the control module controls the electrically adjustable valves at the inlet, outlet, and concentrate outlet to close, and the electrically adjustable valve at the drain outlet to open.

[0013] This invention provides a water treatment device, including the ultrasonic vibration self-cleaning membrane device described in any of the above embodiments. Because it employs the ultrasonic vibration self-cleaning membrane device, it possesses any of the aforementioned advantages. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of one embodiment of the ultrasonic vibration self-cleaning membrane device provided in this utility model.

[0016] Explanation of reference numerals in the attached figures:

[0017] 1. Membrane module; 2. Ultrasonic vibration device; 3. Pollution monitoring sensor; 4. Control module; 5. Inlet; 6. Outlet; 7. Concentrate outlet; 8. Sewage outlet. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] This embodiment provides a structure for an ultrasonic vibration self-cleaning membrane device that enables intelligent operation, thereby achieving efficient cleaning.

[0023] like Figure 1 The image shows a specific implementation of an ultrasonic vibration self-cleaning membrane device provided in this embodiment, comprising: a membrane module 1, an ultrasonic vibration device 2, and a fouling monitoring sensor 3. The membrane module 1 is provided with an inlet 5, an outlet 6, a concentrate outlet 7, and a drain outlet 8. The ultrasonic vibration device 2 is mounted on the support frame of the membrane module 1. The fouling monitoring sensor 3 is mounted on the membrane module 1 and is used to monitor the membrane flux and fouling degree of the membrane module 1. The fouling monitoring sensor 3 is electrically connected to the ultrasonic vibration device 2.

[0024] In use, the water to be treated enters the membrane module 1 through the inlet 5, the filtered clean water is discharged from the outlet 6, and the concentrated wastewater is discharged from the concentrate outlet 7. After filtration continues for a period of time, the membrane module 1 becomes clogged with contaminants, and the membrane flux decreases. The contamination monitoring sensor 3 monitors the membrane flux and the degree of contamination of the membrane module 1. When a set threshold is reached, the normal operation of the membrane is stopped, and the ultrasonic vibration device 2 is activated. The ultrasonic vibration device 2 uses high-frequency ultrasonic vibration to generate micro-vibrations on the membrane surface, breaking the bonding force between the contaminants and the membrane surface. The contaminants detached during the ultrasonic cleaning process are discharged through the drain outlet 8, achieving efficient cleaning. The device can automatically start the ultrasonic vibration cleaning according to the degree of membrane contamination without manual intervention, achieving intelligent operation. Ultrasonic cleaning does not require the use of chemical agents, reducing environmental pollution and energy consumption. The ultrasonic vibration self-cleaning membrane device provided in this embodiment solves the problem that ultrasonic cleaning technology cannot adjust its working state according to the degree of membrane contamination.

[0025] Specifically, the membrane module 1 can be a membrane commonly used in the water treatment field, including but not limited to ultrafiltration membranes, nanofiltration membranes, and reverse osmosis membranes.

[0026] like Figure 1 As shown, in the ultrasonic vibration self-cleaning membrane device provided in this embodiment, the sensing end of the fouling monitoring sensor 3 is located at the inlet 5 or outlet 6 of the membrane module 1. It monitors the membrane flux and fouling level in real time, and adjusts the start and stop of the ultrasonic vibration device 2 according to the fouling situation.

[0027] It should be further explained that membrane flux (J) refers to the volume of permeate passing through a unit membrane area per unit time. The flux is calculated by directly measuring the instantaneous flow rate (Q / t) of the permeate using a flow sensor, combined with the known membrane area (A), i.e., J = Q / (A·t). The flow sensor is installed in the permeate outlet pipe of the membrane module, outputting the permeate volume (Q / t) per unit time in real time. Substituting this into the formula J = (Q / t) / A yields the membrane flux.

[0028] Membrane fouling refers to the accumulation of contaminants (particulate matter, colloids, organic matter, microorganisms, etc.) on the membrane surface or within the membrane pores, leading to an increase in total membrane resistance. By using pressure sensors to record these changes in real time, the degree of membrane fouling can be reflected.

[0029] like Figure 1As shown, the ultrasonic vibration self-cleaning membrane device provided in this embodiment further includes: a control module 4. The membrane module 1, the ultrasonic vibration device 2, and the contamination monitoring sensor 3 are electrically connected to the control module 4. The control module 4 is used to control the ultrasonic vibration device 2 to adjust its power output, vibration frequency, and duration. The contamination monitoring sensor 3 transmits data to the control module 4. The control module 4 determines whether to start the ultrasonic vibration device 2 based on the data. If the ultrasonic vibration device is started, the normal operation of the membrane module 1 is stopped simultaneously. The control module 4 also controls the ultrasonic vibration device 2 to adjust its power output, vibration frequency, and duration based on the data from the contamination monitoring sensor 3 to adapt to different levels of contamination and membrane material characteristics. After cleaning is completed, the control module 4 controls the ultrasonic vibration device 2 to stop and restores the normal operation of the membrane module 1.

[0030] Specifically, the control module 4 can be equipped with an intelligent algorithm control system to optimize cleaning parameters based on historical data and real-time monitoring results, or the parameters can be adjusted manually.

[0031] like Figure 1 As shown, in the ultrasonic vibration self-cleaning membrane device provided in this embodiment, the vibration frequency range of the ultrasonic vibration device 2 is 20kHz to 100kHz. Through this setting, the optimal vibration frequency can be selected for different types of contaminants (such as organic matter, inorganic salts, microorganisms, etc.), thereby improving the cleaning effect. Alternatively, as an alternative implementation, the ultrasonic vibration device 2 can also be configured with a fixed vibration frequency.

[0032] Specifically, the ultrasonic vibration device 2 can provide low-frequency ultrasound (suitable for removing large particulate pollutants, with a vibration frequency range of 20kHz to 40kHz), medium-frequency ultrasound (suitable for removing medium particulate pollutants, with a vibration frequency range of 40kHz to 60kHz), and high-frequency ultrasound (suitable for removing fine particles and microorganisms, with a vibration frequency range of 60kHz to 100kHz).

[0033] like Figure 1 As shown, in the ultrasonic vibration self-cleaning membrane device provided in this embodiment, the ultrasonic vibration device 2 is configured as an integrated structure with multiple ultrasonic generators, and each ultrasonic generator is configured with at least one vibration frequency. The ultrasonic vibration device 2, through a combination of ultrasonic waves at different vibration frequencies, can thoroughly clean the membrane module 1. Furthermore, the ultrasonic vibration device 2 is configured as an integrated module, suitable for membrane modules 1 of different specifications, and has wide applicability.

[0034] like Figure 1As shown, in the ultrasonic vibration self-cleaning membrane device provided in this embodiment, electric regulating valves are installed at the inlet 5, outlet 6, concentrate outlet 7, and drain outlet 8 of the membrane module 1. These electric regulating valves are electrically connected to the control module 4. When the membrane module 1 is working normally, the control module 4 controls the electric regulating valves at the inlet 5, outlet 6, and concentrate outlet 7 to open, and the electric regulating valve at the drain outlet 8 to close. When the ultrasonic vibration device 2 is turned on, the control module 4 controls the electric regulating valves at the inlet 5, outlet 6, and concentrate outlet 7 to close, and the electric regulating valve at the drain outlet 8 to open.

[0035] It should be further explained that the inlet 5, the outlet 6, the concentrate outlet 7, and the sewage outlet 8 can be equipped with monitoring devices connected to the control module 4 to monitor the fluid parameters and water quality at the inlet 5, outlet 6, concentrate outlet 7, and sewage outlet 8, and to comprehensively determine whether to activate the ultrasonic vibration device 2.

[0036] How to use:

[0037] like Figure 1 As shown, in this embodiment, the ultrasonic vibration self-cleaning membrane device is used such that the water to be treated enters the membrane module 1 through the inlet 5, the filtered clean water is discharged from the outlet 6, and the concentrated wastewater is discharged from the concentrate outlet 7. After the filtration operation continues for a period of time, the membrane module 1 becomes clogged with pollutants, and the membrane flux decreases. The pollution monitoring sensor 3 monitors the membrane flux and pollution level of the membrane module 1 and transmits the data to the control module 4. When a set threshold is reached, the normal operation of the membrane is stopped, the ultrasonic vibration device 2 is started, and the output power, vibration frequency, and duration of the ultrasonic vibration device 2 are adjusted according to the pollution level. The ultrasonic vibration device 2 causes the membrane surface to vibrate slightly through high-frequency ultrasonic vibration, which breaks the bonding force between the pollutants and the membrane surface. The pollutants that fall off during the ultrasonic cleaning process are discharged through the drain outlet 8, achieving efficient cleaning. After cleaning is completed, the control module 4 controls the ultrasonic vibration device 2 to stop and restore the normal operation of the membrane module 1.

[0038] In addition, this embodiment also provides a water treatment device that uses the ultrasonic vibration self-cleaning membrane device described in the above embodiments. It can automatically start ultrasonic vibration cleaning according to the degree of membrane fouling, without manual intervention, realize intelligent operation, achieve efficient cleaning, eliminate the need for chemical agents, reduce environmental pollution, and reduce energy consumption.

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. An ultrasonic vibration self-cleaning membrane device, characterized in that, include: A membrane module (1) is provided with an inlet (5), an outlet (6), a concentrate outlet (7), and a drain outlet (8); An ultrasonic vibration device (2) is mounted on the support frame of the membrane assembly (1); A pollution monitoring sensor (3) is installed on the membrane module (1). The pollution monitoring sensor (3) is used to monitor the membrane flux and pollution level of the membrane module (1). The pollution monitoring sensor (3) is electrically connected to the ultrasonic vibration device (2).

2. The ultrasonic vibration self-cleaning membrane device according to claim 1, characterized in that, The sensing end of the pollution monitoring sensor (3) is located at the inlet (5) or outlet (6) of the membrane module (1).

3. The ultrasonic vibration self-cleaning membrane device according to claim 1 or 2, characterized in that, Also includes: The control module (4) is electrically connected to the membrane assembly (1), the ultrasonic vibration device (2) and the pollution monitoring sensor (3). The control module (4) is used to control the ultrasonic vibration device (2) to adjust the power output, vibration frequency and duration.

4. The ultrasonic vibration self-cleaning membrane device according to claim 3, characterized in that, The ultrasonic vibration device (2) has a vibration frequency range of 20kHz to 100kHz.

5. The ultrasonic vibration self-cleaning membrane device according to claim 4, characterized in that, The ultrasonic vibration device (2) is configured as an integrated structure with multiple ultrasonic generators, wherein the ultrasonic generators are configured with at least one vibration frequency.

6. The ultrasonic vibration self-cleaning membrane device according to claim 3, characterized in that, The membrane module (1) is equipped with an electric regulating valve at its inlet (5), outlet (6), concentrate outlet (7) and drain outlet (8), and the electric regulating valve is electrically connected to the control module (4).

7. A water treatment device, characterized in that, The ultrasonic vibration self-cleaning membrane device includes any one of claims 1-6.

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