Ultrasonic disinfection device for ship ballast water

Abstract

The present invention relates to the technical field of sewage treatment, and in particular to an ultrasonic disinfection device for ship ballast water, the ultrasonic disinfection device comprising: an L-shaped pipe connected to a ship ballast water delivery pipe, an ultrasonic generator installed on the L-shaped pipe, a first baffle and a second baffle installed in the L-shaped pipe, the first baffle and the second baffle being used to change the flow rate of the ship ballast water, and a driving member installed between the L-shaped pipe and the second baffle. The present invention utilizes an ultrasonic generator to generate ultrasonic waves, and radiates ballast water through ultrasonic waves, so that the ballast water undergoes an ultrasonic cavitation effect, so that water molecules are split into free radicals such as OH and H, thereby oxidizing organic matter in the water and entering bacteria to achieve the effect of sterilization and disinfection. The ultrasonic wave is generated by the ultrasonic generator, so the ultrasonic disinfection is reusable. Compared with the prior art, the present technical solution has lower economic cost and is simple to operate.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to an ultrasonic disinfection device for ship ballast water. Background Art

[0002] Ship's ballast water refers to the water and suspended matter added to the ship to control the ship's heel, trim, draft, stability or stress. Ship's ballast water contains a large number of organisms, so the ship's ballast water needs to be disinfected so that the ship's ballast water meets the discharge requirements.

[0003] In the prior art, preliminary filtration is generally performed through fine mesh filtration equipment and then disinfected and sterilized through chemical treatment. However, since chemical treatment of wastewater often requires the use of chemical agents, the production cost of chemical agents is relatively high and they are all disposable products, the cost of ship ballast water management and maintenance is relatively high. Summary of the invention

[0004] The purpose of the present invention is to solve the problem of high economic cost of chemical wastewater treatment in the prior art, and to propose an ultrasonic disinfection device for ship ballast water.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An ultrasonic disinfection device for ship ballast water, the ultrasonic disinfection device comprising:

[0007] L-shaped pipe connected to the ship's ballast water delivery pipe;

[0008] An ultrasonic generator installed on the L-shaped pipe;

[0009] A first baffle and a second baffle installed in the L-shaped pipe, the first baffle and the second baffle being used to change the flow rate of the ship's ballast water;

[0010] A driving member is installed between the L-shaped pipe and the second baffle, and the driving member is used to drive the ship's ballast water to form cavitation.

[0011] Preferably, the L-shaped pipe consists of a first pipe arranged transversely and a second pipe arranged longitudinally, the first pipe is provided with a first flange for connecting to a ship's ballast water delivery pipe, and the second pipe is provided with a second flange for connecting to a ship's ballast water discharge pipe.

[0012] Preferably, the second pipe is provided with two mounting rings for mounting the ultrasonic generator, and at least two mounting rings are provided, and an ozone generator for use with the ultrasonic generator is installed on the mounting ring.

[0013] Preferably, the ozone generator is composed of a battery, two DC power input lines, a DC to AC boost module, a high-frequency boost coil for generating high voltage and a ceramic sheet. The mounting ring is used to install a mounting box for the ozone generator, and the mounting box is fixedly connected to an air inlet pipe for conveying ozone. A one-way valve and a pump body are installed on the air inlet pipe, and a plurality of one-way air inlet holes are opened on the mounting box.

[0014] Preferably, the cross section of the first baffle is a circular structure, a circular through hole is opened at the center of the first baffle, and a first guide slope inclined toward the circular through hole is arranged at the top of the first baffle.

[0015] Preferably, the second baffle plate is provided with a second guide slope inclined with its center toward the inner wall of the second pipe, an arc-shaped hole is opened on the outer circle of the second baffle plate, and the wall of the arc-shaped hole is inclined toward the circle.

[0016] Preferably, the driving member comprises:

[0017] Rotating a mounting shaft mounted on the second baffle plate;

[0018] A driving motor installed on the first pipe, the driving motor is used to drive the installation shaft to rotate;

[0019] a mounting bin integrally connected to the second pipe;

[0020] a mounting post mounted on the mounting shaft;

[0021] A blade is mounted on the mounting post.

[0022] Preferably, the installation bin as a whole is a hollow cylindrical structure, and a third guide slope inclined toward the center of the second pipe is provided at the top of the installation bin, the diameter of the installation bin is smaller than the diameter of the second pipe, and the horizontal plane of the bottom end of the installation bin is higher than the horizontal plane of the bottom end of the installation column.

[0023] Preferably, the bottom end of the mounting column is a conical structure.

[0024] Preferably, the cross section of the blade is a standard aerodynamic wing structure.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. The present invention utilizes an ultrasonic generator to generate ultrasonic waves, and radiates ballast water through ultrasonic waves, so that the ballast water undergoes ultrasonic cavitation effect, causing water molecules to split into free radicals such as OH and H, thereby oxidizing organic matter in the water and entering bacteria to achieve the effect of sterilization and disinfection. The ultrasonic waves are generated by the ultrasonic generator, so ultrasonic disinfection is reusable. Compared with the prior art using chemical reagents that can only act once, the technical solution has lower economic cost and is simpler to operate.

[0027] 2. The present invention produces ozone through an ozone generator. After the ozone is dissolved in water, it directly or indirectly oxidizes inorganic and organic substances in the water by utilizing a large amount of hydroxyl free radicals and new ecological oxygen generated in the reaction, and enters into bacterial cells to oxidize intracellular organic substances, thereby achieving the purpose of sterilization and disinfection and purifying water quality. The strong oxidizing property of ozone and the cavitation effect of ultrasound are utilized to help improve the treatment efficiency of difficult-to-degrade organic pollutants.

[0028] 3. In the present invention, the local resistance in the L-shaped pipe is increased by setting the L-shaped pipe, the first baffle and the second baffle, and utilizing the corners of the L-shaped pipe and the hole design of the first baffle and the second baffle. In order to overcome these resistances, the pressure in the pipe of the ballast water will decrease, thereby generating a negative pressure. Under the negative pressure environment, a large number of bubbles will be generated in the ballast water, thereby assisting and improving the working efficiency of ultrasonic disinfection.

[0029] 4. In the present invention, when the driving part is driven at high speed, the ballast water is continuously sheared at high speed, collides with each other, and friction and collision generate micro bubbles, which further improves the disinfection effect of ultrasound on the ballast water. The water pressure and the boiling point of water are increased by the installation bin, which helps to reduce the damage to the blades caused by cavitation and help to extend the service life of the blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 For the present invention Figure 1 A cross-sectional view of

[0032] Figure 3 It is a schematic diagram of the connection structure of the L-shaped pipe, ultrasonic generator, mounting ring and ozone generator in the present invention;

[0033] Figure 4 For the present invention Figure 3 A cross-sectional view of

[0034] Figure 5 This is a schematic diagram of the first baffle structure in the present invention;

[0035] Figure 6 It is a cross-sectional view in the present invention;

[0036] Figure 7 It is a schematic diagram of the structure of the second baffle in the present invention;

[0037] Figure 8 It is a schematic diagram of the installation bin structure in the present invention;

[0038] Fig. 9 It is a cross-sectional view of the ozone generator in the present invention.

[0039] In the figure:

[0040] 1. L-shaped pipeline; 101. first pipeline; 102. second pipeline;

[0041] 2. Ultrasonic generator;

[0042] 3. first baffle; 301. circular through hole; 302. first guide slope;

[0043] 4. second baffle; 401. second guide slope; 402. arc-shaped hole;

[0044] 5. Driving member; 501. Mounting shaft; 502. Driving motor; 503. Mounting compartment;

[0045] 5031, third guide slope; 504, mounting column; 505, blade;

[0046] 6. Install the ring;

[0047] 7. Ozone generator. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0049] The present invention provides the following preferred embodiments:

[0050] Embodiment 1

[0051] refer to Figures 3 to 7 as well as Fig. 9 As shown, this embodiment provides a ship ballast water ultrasonic disinfection device, which includes an L-shaped pipe 1 connected to the ship ballast water delivery pipe, an ultrasonic generator 2, a first baffle 3 and a second baffle 4, and each component is arranged as follows:

[0052] The ultrasonic generator 2 is installed on the L-shaped pipe 1. It should be noted that the ultrasonic generator 2 includes a controller, a battery and an ultrasonic vibrator heat exchanger. The mechanism of ultrasonic sterilization includes the following aspects:

[0053] First, utilizing the pressure effect of ultrasonic waves, the pressure fluctuations of ultrasonic waves can disrupt the cell walls of microorganisms, causing the leakage of cell contents and thus killing the microorganisms.

[0054] Second, utilizing the shear force effect of ultrasonic waves, the shear force of ultrasonic waves can damage the cell membranes of microorganisms, making it impossible for cells to carry out normal metabolism and growth.

[0055] Third, utilizing the cavitation effect of ultrasonic waves, cavitation occurs in the ballast water when ultrasonic waves are applied, that is, bubbles are formed. When these bubbles burst, intense shock waves and high temperatures and pressures are generated.

[0056] In summary, compared with traditional sterilization methods, ultrasonic sterilization has the advantages of being pollution-free, highly efficient, and not requiring the addition of chemical substances.

[0057] The L-shaped pipe 1 is composed of a first pipe 101 arranged horizontally and a second pipe 102 arranged vertically. A first flange for connecting the ship's ballast water conveying pipe is provided on the first pipe 101, and a second flange for connecting the ship's ballast water discharge pipe is provided on the second pipe 102. When the ship's ballast water flows through the connecting corner of the first pipe 101 and the second pipe 102, due to the sudden change in the flow direction of the ship's ballast water, the local resistance increases. In order for the ship's ballast water to overcome these resistances, the pressure in the L-shaped pipe 1 will drop, thereby generating negative pressure. And a large number of bubbles will be generated in the ship's ballast water in a negative pressure environment. When the bubbles encounter ultrasonic waves, a cavitation effect will occur. When high-intensity ultrasonic waves propagate in a liquid medium, longitudinal waves are generated, thereby generating regions of alternating compression and expansion. These regions with changing pressures are prone to cause cavitation phenomena and form tiny bubble nuclei in the medium. At the moment of adiabatic contraction and collapse of the tiny bubble nuclei, temperatures above 5000 °C and pressures of 50000 kPa are presented inside, thereby killing some bacteria in the liquid, inactivating viruses, and even destroying the cell walls of some microorganisms with smaller volumes, so as to achieve the purpose of disinfecting and sterilizing the ship's ballast water.

[0058] The second pipe 102 is provided with two mounting rings 6 for mounting the ultrasonic generator 2, and at least two mounting rings 6 are provided. An ozone generator 7 for use with the ultrasonic generator 2 is installed on the mounting ring 6. The ozone generator 7 is composed of a battery, two DC power input lines, a DC to AC boost module, a high-frequency boost coil for generating high voltage, and a ceramic sheet. The high-frequency boost coil is connected to two electrodes of the ceramic sheet through two connecting lines. An electrode is inlaid on the upper and lower sides of the ceramic sheet. The electrode on the side of the ceramic sheet away from the high-frequency boost coil is a discharge electrode with a U-shaped structure, and the electrode on the side of the ceramic sheet close to the high-frequency boost coil is an induction electrode with a rectangular structure. The induction electrode is insulated. When the discharge electrode senses the high-frequency AC voltage of the induction electrode, corona discharge will be generated, and the corona discharge will be released through the discharge electrode. The corona discharge will generate plasma. The plasma decomposes oxygen molecules into single atomic oxygen in an instant, and the atomic oxygen quickly combines with oxygen to form ozone. Oxygen undergoes an oxidation reaction with bacteria, viruses and organic matter in the water, destroying their molecular structure to achieve the purpose of sterilization and removal of pollutants. It should be noted that: the mounting ring 6 is used to install an installation box for installing the ozone generator 7, and the installation box is fixedly connected with an air inlet pipe for conveying ozone, and a one-way valve and a pump body are installed on the air inlet pipe. The one-way valve is set so that the air inlet pipe has unidirectionality to prevent ozone from flowing back into the installation box, and the ozone is actively transported to the second pipe 102 through the pump body, and the air inlet pipe is located at one end of the second pipe 102 and is tilted downward to prevent the ship's ballast water from flowing back through the air inlet pipe and affecting the ozone delivery. A plurality of one-way air inlet holes are provided on the installation box, and the one-way air inlet holes are arranged in the area between the end of the ceramic sheet away from the DC to AC boost module and the inner wall of one side of the air inlet pipe of the installation box. The ship's ballast water is sterilized by the strong oxidizing property of ozone and the cavitation effect of ultrasound, which helps to improve the treatment efficiency of difficult-to-degrade organic pollutants.

[0059] The first baffle plate 3 and the second baffle plate 4 installed in the L-shaped pipeline 1 are used to change the flow rate of the ship's ballast water. The cross-section of the first baffle plate 3 is a circular structure. A circular through hole 301 is opened at the center of the first baffle plate 3. The ship's ballast water in the second pipeline 102 is discharged from the circular through hole 301, so that the flow space of the ship's ballast water suddenly becomes narrower, resulting in an increase in local resistance, which in turn causes the pressure of the space below the first baffle plate 3 to decrease, so that the ship's ballast water is in a negative pressure environment. The top of the first baffle plate 3 is provided with a first guide slope 302 inclined toward the circular through hole 301, so that the ship's ballast water on the upper surface of the first baffle plate 3 moves toward the circular through hole 301 under the action of gravity, thereby avoiding the waste of water resources caused by being intercepted by the first baffle plate 3 when the ship's ballast water stops being transported. The second baffle plate 4 is provided with a There is a second guide slope 401 inclined with the center of the circle toward the inner wall of the second pipe 102, so that the ship ballast water on the upper surface of the second baffle 4 moves toward the inner wall of the second pipe 102 under the action of gravity, thereby avoiding the waste of water resources caused by being intercepted by the second baffle 4 when the ship ballast water stops being transported. An arc hole 402 is opened on the outer circle of the second baffle 4, and the hole wall of the arc hole 402 is inclined toward the circle. The ship ballast water in the space below the first baffle 3 is discharged from the arc hole 402, so that the flow space of the ship ballast water suddenly becomes narrow and diversion is achieved, resulting in an increase in local resistance, which in turn causes a decrease in the pressure in the space below the second baffle 4, so that the ship ballast water is in a negative pressure environment. A large number of bubbles will be generated in the ship ballast water under the negative pressure environment, and the purpose of eliminating microorganisms is achieved in conjunction with the cavitation effect of the ultrasonic wave.

[0060] When using the ship's ballast water ultrasonic disinfection device, follow the steps below:

[0061] Start the ultrasonic generator 2 and the ozone generator 7, the ship's ballast water enters the first pipe 101, and then enters the second pipe 102 from the first pipe 101. The ship's ballast water flows through the first baffle 3 and the second baffle 4. Due to the increase in local resistance, the pressure in the second pipe 102 decreases. At this time, the ship's ballast water is in a negative pressure environment, and a large number of bubbles are generated in the ship's ballast water. The ultrasonic wave generated by the ultrasonic generator 2 and the ozone generated by the ozone generator 7 are used to disinfect and sterilize the ship's ballast water.

[0062] Embodiment 2

[0063] refer to Figure 1 to Figure 2 and Figure 8 As shown, on the basis of the first embodiment, in order to improve the cavitation effect generated in the ship's ballast water, a driving member 5 is introduced, which can generate a large number of microbubbles in the ship's ballast water. The driving member 5 includes a mounting shaft 501, a driving motor 502, a mounting bin 503, a mounting column 504 and a blade 505. The specific implementation is as follows:

[0064] The mounting shaft 501 mounted on the second baffle plate 4 is rotatably mounted on the driving motor 502 mounted on the first pipeline 101. The driving motor 502 is used to drive the mounting shaft 501 to rotate, and is integrally connected to the mounting chamber 503 on the second pipeline 102. The mounting chamber 503 is a hollow cylindrical structure as a whole. The top of the mounting chamber 503 is provided with a third guide slope 5031 inclined toward the center of the second pipeline 102, so that the ship ballast water at the top of the mounting chamber 503 moves toward the mounting column 504 under the action of gravity, thereby avoiding the waste of water resources caused by being intercepted by the mounting chamber 503 when the ship ballast water stops being transported. The diameter of the mounting chamber 503 is smaller than that of the second pipeline 1 02 diameter value, the mounting column 504 mounted on the mounting shaft 501, the bottom end of the mounting column 504 is a conical structure, and the bottom end horizontal plane of the mounting chamber 503 is higher than the bottom end horizontal plane of the mounting column 504, the blade 505 mounted on the mounting column 504, the cross section of the blade 505 is a standard aerodynamic wing structure, the driving motor 502 drives the blade 505 to rotate at high speed through the mounting shaft 501 and the mounting column 504, the ballast water is continuously sheared at high speed, collides with each other, and the micro bubbles formed by friction and collision are continuously grown, expanded, compressed and collapsed, and the time of this cavitation explosion process does not exceed six thousandths of a second. Due to the huge cavitation bubbles generated in the rapid collapse, the cavitation bubbles are greatly The ultra-micro jet generates ultrasonic cavitation when spraying and radiates sound waves to the ship's ballast water. The frequency is generally in the ultrasonic band of 16KHz-100KHz. The high-intensity light amplitude generated by this optical cavitation ultrasonic band phenomenon continuously splits the continuously generated cavitation bubbles, so that the continuously growing tiny bubbles are subjected to the negative pressure around the negative liquid, causing the bubbles to produce cavitation effect. The huge energy released in this process makes the ballast water reach the boiling point, thereby achieving the purpose of sterilization and disinfection. The ship's ballast water will go out from the bottom of the installation column 504. Because the ship's ballast water is affected by the blades 505, the pressure in the surrounding area of ​​the installation column 504 is relatively low, and the low pressure will As a result, the boiling point of the ship's ballast water is reduced, which in turn causes the ship's ballast water in the area around the installation column 504 to boil quickly and produce cavitation. In order to extend the service life of the blade 505, the installation column 504 and the blade 505 are arranged in the installation bin 503. Since the diameter value of the second pipe 102 is greater than the diameter value of the installation bin 503, the space suddenly increases when the ship's ballast water flows out of the installation bin 503, thereby increasing the water pressure in the area and the boiling point of the ship's ballast water. It should be noted that: at least one group of the installation column 504 and the blade 505 is arranged on the installation shaft 501, and the number of the installation column 504, the blade 505 and the installation bin 503 is equal.

[0065] When using the ship's ballast water ultrasonic disinfection device, follow the steps below:

[0066] The driving motor 502 drives the installation shaft 501 to rotate, the installation shaft 501 drives the installation column 504 to rotate, and the installation column 504 drives the blade 505 to rotate, so that a large number of bubbles are generated in the ship's ballast water to cooperate with ozone and ultrasound to achieve disinfection and sterilization operations on the ship's ballast water.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A ship ballast water ultrasonic disinfection device, characterized in that: The ultrasonic disinfection device comprises: An L-shaped pipe (1) connected to a ship's ballast water delivery pipe, the L-shaped pipe (1) consisting of a first pipe (101) arranged transversely and a second pipe (102) arranged longitudinally, the first pipe (101) being provided with a first flange for connecting to the ship's ballast water delivery pipe, and the second pipe (102) being provided with a second flange for connecting to the ship's ballast water discharge pipe; An ultrasonic generator (2) is installed on the L-shaped pipe (1), and the second pipe (102) is provided with two mounting rings (6) for mounting the ultrasonic generator (2), and at least two mounting rings (6) are provided, and an ozone generator (7) for use with the ultrasonic generator (2) is installed on the mounting ring (6); A first baffle (3) and a second baffle (4) are installed in the L-shaped pipe (1), the first baffle (3) and the second baffle (4) being used to change the flow rate of the ship's ballast water, the first baffle (3) having a circular cross-section, a circular through hole (301) being provided at the center of the first baffle (3), a first guide slope (302) being inclined toward the circular through hole (301) being provided at the top of the first baffle (3), a second guide slope (401) being inclined toward the inner wall of the second pipe (102) from the center of the circle being provided on the second baffle (4), an arc-shaped hole (402) being provided at the outer circle of the second baffle (4), and the hole wall of the arc-shaped hole (402) being inclined toward the circle direction; A driving member (5) is installed between the L-shaped pipe (1) and the second baffle plate (4), wherein the driving member (5) is used to drive the ship's ballast water to form cavitation, and the driving member (5) comprises: Rotating a mounting shaft (501) mounted on the second baffle plate (4); a driving motor (502) installed on the first pipe (101), the driving motor (502) being used to drive the installation shaft (501) to rotate; an installation bin (503) integrally connected to the second pipe (102), the installation bin (503) being a hollow cylindrical structure as a whole, a third guide slope (5031) inclined toward the center of the second pipe (102) being provided at the top of the installation bin (503), and a diameter value of the installation bin (503) being smaller than a diameter value of the second pipe (102); A mounting column (504) mounted on the mounting shaft (501), wherein the bottom end horizontal plane of the mounting chamber (503) is higher than the bottom end horizontal plane of the mounting column (504); A blade (505) is mounted on the mounting post (504).

2. The ultrasonic disinfection device for ship ballast water according to claim 1, characterized in that: The ozone generator (7) is composed of a storage battery, two DC power input lines, a DC to AC boost module, a high-frequency boost coil for generating high voltage, and a ceramic sheet. The mounting ring (6) is used to mount a mounting box for mounting the ozone generator (7). An air intake pipe for transporting ozone is fixedly connected to the mounting box. A one-way valve and a pump body are matched and mounted on the air intake pipe. A plurality of one-way air intake holes are provided on the mounting box.

3. The ultrasonic disinfection device for ship ballast water according to claim 1, characterized in that: The bottom end of the mounting column (504) is a conical structure.

4. The ultrasonic disinfection device for ship ballast water according to claim 1, characterized in that: The cross section of the blade (505) is a standard aerodynamic wing structure.

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