Shipborne variable-depth high-frequency acoustic water quality purification device

Abstract

The invention provides a shipborne variable-depth high-frequency acoustic water quality purification device which utilizes ultrasonic waves to enhance or change a chemical reaction, and the sonochemical reaction is carried out in a water body; shock waves, jet flow and radiation pressure caused by corresponding high-frequency sound waves are used for enabling the outer walls of the algae to be broken, substances in cells flow out and die, and free radicals are generated. According to the invention, operation in different areas is realized through shipborne sailing, and operation of the ultrasonic transducer in water at different depths is realized through the telescopic rod piece.

Description

Technical Field

[0001] The invention belongs to the field of hydroacoustics, and in particular relates to a shipborne variable-depth high-frequency acoustic water purification device. Background Art

[0002] The nitrogen and phosphorus pollutants discharged by humans in production and life exceed the carrying capacity of the environment, leading to the intensification of eutrophication of water bodies. Harmful algal blooms often occur in rivers, lakes and reservoirs, and have become a major environmental problem due to their high chemical consumption and threat to safe water supply. The large-scale growth of algae will consume a large amount of dissolved oxygen, produce foul odors, destroy the ecological balance of the water environment, and release various algal toxins.

[0003] Due to its small size and low specific gravity, algae are difficult to remove from water. In addition, in drinking water production systems, algae can clog filters, and some coagulants can penetrate the filters, thereby increasing the turbidity of the effluent. For example, a typical cyanobacteria, Microcystis aeruginosa, is a very common algae in rivers and lakes. It is also one of the algae that is prone to algal blooms and is present in large quantities in waters with a neutral or slightly alkaline pH value. Microcystis aeruginosa can produce microcystins, which are possible carcinogens. Among cyanobacterial toxins, microcystins are very common and persistent in freshwater bodies throughout the world, thus adversely affecting the functioning of urban ecosystems and drinking water production systems.

[0004] Against the background of frequent algae blooms in water sources, safe and efficient purification and algae removal is an urgent scientific and technological need in the field of water purification. Previously, the leading algae removal technologies were chemical pre-oxidation and coagulation sedimentation (or flotation) technologies, but there were problems such as unsafe water quality and low efficiency. The main reasons are: on the one hand, the extracellular polymers of algae are hydrophilic and have negative charges, and have poor coagulation properties with coagulants, which makes the coagulation and algae removal efficiency low. On the other hand, "chemical pre-oxidation" can promote coagulation and algae removal by destroying the structure of extracellular polymers. However, pre-oxidants such as chlorine, ozone, and permanganate basically need to be in contact with algae cells for a long time, and the required amount of agents is difficult to control, which may cause algae cells to rupture, and pollutants such as algae toxins and organic matter in the cells leak into the water, increasing the risk of pollution. In addition, photocatalysis / nanomaterials jointly pre-oxidize cyanobacteria, and oxidize algae extracellular polymers through free radicals. Although it can maintain the integrity of algae cells, the light penetration is poor, which limits the effectiveness of photocatalysis.

[0005] Patent document CN1950303A discloses a method for treating pure water, in which, after ultrapurified water is obtained, it is treated by cavitation in a tank provided with an acoustic antenna comprising a Tonpilz-type piezoelectric transducer, which emits acoustic energy sufficient to exceed the cavitation threshold at a frequency at least equal to the excitation frequency of water molecules and taking into account the amount of water to be treated. However, this patent document is not applicable to shipborne platforms. Summary of the invention

[0006] In view of the defects in the prior art, the object of the present invention is to provide a ship-borne variable-depth high-frequency acoustic water purification device.

[0007] According to the ship-borne variable-depth high-frequency acoustic water purification device provided by the present invention, ultrasonic waves are used to enhance or change chemical reactions, and sonochemical reactions are carried out in the water body; the shock waves, jets, and radiation pressure caused by the corresponding high-frequency sound waves are used to rupture the outer wall of the algae, cause the substances in the cells to flow out and die, and generate free radicals.

[0008] Preferably, it comprises: a dry end and a wet end;

[0009] The telescopic rod at the dry end extends the transmitting transducer at the wet end to the set depth. After completing the depth positioning, the transmission of the corresponding frequency is controlled by the control system at the dry end. The signal generator at the dry end generates a broadband sound signal according to the working parameters and working commands sent by the control system. After the modulation circuit, a differential pulse width coded signal is formed and sent to the power amplifier at the dry end. The matching circuit at the dry end completes the matching between the power amplifier and the active transmitting array, and then passes it to the transmitting transducer. The transmitting transducer completes the sound radiation output of the set frequency.

[0010] Preferably, the transmitting transducer emits 15KHz-200kHz high-frequency sound waves toward the bow in an area with a semicircular sector radius of 100 to 200m. The shock waves, jets, radiation pressure and high temperature caused by the sound waves rupture the outer wall of the algae, destroying the structure and active enzymes of the algae, interfering with the synthesis of chlorophyll, and causing the intracellular substances to flow out and die.

[0011] Preferably, the ultrasonic transducer emits sound waves in a 180-degree emission angle fan direction straight ahead.

[0012] Preferably, the output power of the ultrasonic transducer is adjustable from 10 to 300 W.

[0013] Preferably, the organic matter in the waste is degraded by free radical reactions generated in the water.

[0014] Preferably, the power module at the dry end receives power from the ship's electricity and combines it with auxiliary power from the solar charging module to provide support for endurance according to weather conditions.

[0015] Preferably, work instructions are automatically or manually determined based on the sensor depth, type, concentration, and video information at the wet end, and transmitted to the transmitting control module and receiving processing module at the dry end to control the transducer operation. The transmitting module is mainly used for transmitting sound wave control, and the receiving processing module is mainly used for depth processing.

[0016] Preferably, the wet end uses an integrated transceiver and a sandwich piezoelectric ceramic transducer, and the transducer can simultaneously realize water purification and depth measurement functions through calculation and processing at the dry end.

[0017] Preferably, when emitting acoustic radiation, the signal generator at the dry end generates a broadband acoustic signal according to the working parameters and working commands sent by the control system, and forms a differential pulse width coded signal after passing through the modulation circuit and is sent to the power amplifier. The power amplifier adopts a Class D power amplifier circuit design, and the amplifying element is in a power amplification mode in which the amplifying element is in a switching working state. When there is no signal input, the amplifier is in a cut-off state and consumes no power. When working, the transistor is put into a saturation state by the input signal.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention realizes operation in different areas by sailing on a ship, and realizes operation of the ultrasonic transducer at different depths in water by telescopic rods.

[0020] 2. The present invention uses shock waves, jets and radiation pressure caused by high-frequency ultrasonic cavitation to destroy bubbles in algae cells, decompose complex organic wastes, and thus purify water quality.

[0021] 3. The present invention utilizes cavitation effect and free radical reaction to decompose algae and difficult-to-degrade organic matter, thereby achieving the purpose of treating and purifying water quality, and the device will not affect aquatic plants and animals. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 It is a schematic diagram of the working principle of the present invention.

[0024] Figure 2 It is a schematic diagram of the workflow of the present invention.

[0025] The figure shows:

[0026] Telescopic rod 100

[0027] Transmitter 200 DETAILED DESCRIPTION

[0028] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0029] Based on the fact that the previous water purification methods cannot achieve the unity of safety, efficiency and economy, the present invention provides a ship-borne variable-depth high-frequency acoustic water purification device, which uses ultrasound to enhance or change chemical reactions. The sonochemical reaction mainly originates from acoustic cavitation - the formation, oscillation, growth, contraction and collapse of cavities in liquids, and the physical and chemical changes caused by them. The liquid cavitation process is a process of concentrating the energy of the sound field and releasing it rapidly. When the cavitation bubble collapses, in a very short time, the extremely small space around the cavitation bubble will produce extremely high temperature and pressure, accompanied by strong shock waves and (or) high-speed microjets. This provides a new and very special physical environment for chemical reactions that are difficult or impossible to achieve under normal conditions, and opens up a new chemical reaction channel. This process manifests as ultrasonic chemistry or high energy, and the shock waves, jets, radiation pressure, etc. caused by the corresponding high-frequency sound waves can cause the outer wall of algae to rupture, the substances in the cells to flow out and die. The high temperature, high pressure and a large number of free radicals generated by cavitation can destroy the active enzymes and active substances in the algae cells, and interfere with the synthesis of chlorophyll. Free radical reactions can also degrade the hard-to-degrade organic matter in the wastewater. Through the above mechanism, the purpose of treating and purifying water quality is achieved.

[0030] Specifically, the present invention provides a ship-borne variable-depth high-frequency acoustic water purification device. The operator presses the control machine switch on the carrier ship, and the device starts to start. Subsequently, the operator controls the telescopic rod on the control machine according to the needs, and controls the corresponding frequency of the transducer of the ship-borne variable-depth high-frequency acoustic water purification device to extend to the corresponding depth through the control system after completing the depth positioning. The signal generator generates a broadband sound signal according to the working parameters and working commands sent by the control system, and forms a differential pulse width coded signal after the modulation circuit to send it to the power amplifier. The matching circuit completes the matching between the power amplifier and the active transmitting array, and then transmits it to the transmitting transducer, and the transmitting transducer completes the specific frequency sound radiation output. Among them, the transmitting transducer will emit 15KHz-200kHz high-frequency frequency radiation sound waves toward the bow of the ship in the area of ​​100-200m of the semicircular fan radius. The shock wave, jet, radiation pressure, high temperature, etc. caused by the sound wave can cause the outer wall of the algae to rupture, destroy the structure of the algae and substances such as active enzymes to interfere with the synthesis of chlorophyll, and the intracellular substances flow out and die. At the same time, free radical reactions in water can also degrade organic matter that is difficult to degrade in waste discharge. The above mechanism is used to achieve the purpose of water purification. The operator needs to observe the depth simultaneously. When the transducer is 2 meters away from the bottom, the industrial computer will issue an alarm, and the operator must operate the camera carefully to avoid touching the bottom.

[0031] The present invention will be described in more detail below.

[0032] The ship-borne variable-depth high-frequency acoustic water purification device includes: a dry end and a wet end. The ultrasonic transducer submerged in the water emits pulse sound waves of a specific frequency into the water. Operations in different areas are achieved by sailing on board the ship, and the ultrasonic transducer is operated at different depths in the water by telescopic rods. The energy supply is realized by a built-in high-efficiency hydrogen fuel-powered lithium battery, and the solar charging module is used to assist in power supply, which provides support for endurance according to weather conditions and reduces the power generation burden of ultra-small workboats. The ultrasonic transducer emits sound waves in a 180-degree emission angle fan directly in front, and the effective emission semicircular fan radius is 100-200m. In order to avoid saturation effect and crushing effect, the output power is adjustable from 10 to 300W. The ship-borne variable-depth high-frequency acoustic water purification device uses a high-frequency sound radiation with an intensity of 15KHz-200kHz, and adopts an adjustable working ratio time cycle pulse operation to improve the crushing effect and effectively prevent temperature rise. The cavitation effect and free radical reaction are used to decompose algae and difficult-to-degrade organic matter, thereby achieving the purpose of treating and purifying water quality, and the device will not affect aquatic plants and animals.

[0033] The dry end of the ship-borne variable-depth high-frequency acoustic water purification device includes: an industrial computer, a power module, a transmitting control module, a receiving processing module and a telescopic rod. The power module receives the power supply converted from the ship's electricity and combines it with the auxiliary power supply of the solar charging module to provide support for endurance according to weather conditions, thereby reducing the power generation burden of ultra-small workboats. The industrial computer has a built-in controller. The system adopts advanced automatic control technology and can automatically adjust the parameters such as the transmitting frequency, output power and working time ratio according to the preset program to adapt to different water quality conditions and treatment requirements. At the same time, the control system has remote monitoring and operation functions, and the operator can monitor and operate the device through the LoT network remote terminal. According to the sensor depth, type, concentration, video and other information of the wet end, the work instructions are automatically or manually judged, and transmitted to the transmitting control module and the receiving processing module to control the transducer operation. The transmitting module is mainly used for transmitting sound wave control, and the receiving processing module is mainly used for depth processing. The telescopic rod adopts high-precision electric drive to achieve centimeter-level depth adjustment.

[0034] Add anti-electromagnetic interference design at the dry end to reduce the impact of electromagnetic radiation. 1. The shell material should be made of materials with high magnetic permeability, and shielding should be done at the openings and gaps. At the same time, the physical distance between electronic components and discharge circuits should be increased to prevent magnetic saturation; 2. Do a good job of hardware interface protection, and add interface protection devices to necessary back-end interfaces, including rectifiers, fuses, and filters, etc. TVS filtering devices are preferred to avoid static electricity and instantaneous electrical surges in the system; 3. Use transformer isolation, through the physical isolation of the main and auxiliary coils, and supply power based on the principle of generating induced electromotive force due to changes in magnetic flux, and the output can be controlled by the turns ratio.

[0035] The wet end of the shipborne variable depth high frequency acoustic water purification device uses a transceiver integrated transducer, and adopts a sandwich piezoelectric ceramic transducer to improve the energy conversion efficiency. The transducer can simultaneously realize water purification and depth measurement functions through dry end calculation processing. The depth measurement function setting is added to effectively prevent the transducer from touching the bottom and damaging the device during the depth change process. When the depth is less than 2 meters, the industrial computer will alarm.

[0036] The combination of ultrasonic radiation with other disinfection technologies can improve the kill rate of certain microorganisms that are resistant to existing biocides, ultraviolet light and thermal treatment technologies. Therefore, ultrasound is used in combination with chlorination, ozonation, electrolysis, various adsorbents and semiconductors acting as heterogeneous catalysts to more effectively remove harmful microorganisms from water.

[0037] When emitting acoustic radiation, the signal generator generates a broadband acoustic signal according to the working parameters and working commands sent by the control system. After the modulation circuit, the differential pulse width coded signal is formed and sent to the power amplifier. The power amplifier adopts a Class D power amplifier circuit design. The amplifying element is in a power amplification mode in a switching working state. When there is no signal input, the amplifier is in a cut-off state and does not consume power. When working, the input signal allows the transistor to enter a saturated state. It has the advantages of small size, high energy conversion efficiency, and high battery efficiency. The function can be realized by a Class D power amplifier integrated circuit chip, and its product consistency is good, which can reduce the debugging work during production and maintenance. The matching circuit completes the matching between the power amplifier and the active transmitting transducer, and finally the transmitting transducer completes the specific frequency acoustic radiation output.

[0038] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A shipborne variable depth high frequency acoustic water purification device, characterized in that: Ultrasound is used to enhance or change chemical reactions through sonochemical reactions in water bodies; the shock waves, jets, and radiation pressure caused by corresponding high-frequency sound waves are used to rupture the outer walls of algae, causing the substances in the cells to flow out and die, and free radicals to be generated.

2. The shipborne variable depth high frequency acoustic water purification device according to claim 1 is characterized in that: include: dry end, wet end; The telescopic rod at the dry end extends the transmitting transducer at the wet end to the set depth. After completing the depth positioning, the transmission of the corresponding frequency is controlled by the control system at the dry end. The signal generator at the dry end generates a broadband sound signal according to the working parameters and working commands sent by the control system. After passing through the modulation circuit, a differential pulse width coded signal is formed and sent to the power amplifier at the dry end. The matching circuit at the dry end completes the matching between the power amplifier and the active transmitting array, and then transmits it to the transmitting transducer. The transmitting transducer completes the sound radiation output of the set frequency.

3. The shipborne variable depth high frequency acoustic water purification device according to claim 1 is characterized in that: The transmitting transducer emits 15KHz-200kHz high-frequency sound waves toward the bow in the semicircular sector radius of 100 to 200m. The shock waves, jets, radiation pressure and high temperature caused by the sound waves rupture the outer wall of the algae, destroying its structure and active enzymes, interfering with the synthesis of chlorophyll, and causing the substances in the cells to flow out and cause death.

4. The shipborne variable depth high frequency acoustic water purification device according to claim 3 is characterized in that: The ultrasonic transducer emits sound waves in a 180-degree emission angle fan direction straight ahead.

5. The shipborne variable depth high frequency acoustic water purification device according to claim 1 is characterized in that: The output power of the ultrasonic transducer is adjustable from 10 to 300W.

6. The shipborne variable depth high frequency acoustic water purification device according to claim 1 is characterized in that: The organic matter in the waste is degraded by the free radical reaction generated in the water.

7. The shipborne variable depth high frequency acoustic water purification device according to claim 1 is characterized in that: The power module at the dry end receives power from the ship's electricity and combines it with auxiliary power from the solar charging module to provide support for endurance according to weather conditions.

8. The shipborne variable depth high frequency acoustic water purification device according to claim 2 is characterized in that: Based on the sensor depth, type, concentration and video information at the wet end, the work instructions are automatically or manually judged and transmitted to the transmitting control module and receiving processing module at the dry end to control the transducer operation. The transmitting module is mainly used for transmitting sound wave control, and the receiving processing module is mainly used for depth processing.

9. The shipborne variable depth high frequency acoustic water purification device according to claim 1, characterized in that: The wet end uses an integrated transceiver and a sandwich piezoelectric ceramic transducer. The transducer can simultaneously achieve water purification and depth measurement functions through dry end calculation processing.

10. The shipborne variable depth high frequency acoustic water purification device according to claim 1, characterized in that: When emitting acoustic radiation, the signal generator at the dry end generates a broadband acoustic signal according to the working parameters and working commands sent by the control system. After passing through the modulation circuit, a differential pulse width coded signal is formed and sent to the power amplifier. The power amplifier adopts a Class D power amplifier circuit design. The amplifying element is in a power amplification mode in which the amplifying element is in a switching working state. When there is no signal input, the amplifier is in a cut-off state and consumes no power. When working, the transistor enters a saturation state by relying on the input signal.

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