CN105984968B

CN105984968B - Drum-shaped acoustic energy water treatment aeration device

Info

Publication number: CN105984968B
Application number: CN201510093900.XA
Authority: CN
Inventors: 孙作达
Original assignee: Harbin Longfa Technology Development Co ltd
Current assignee: Harbin Longfa Technology Development Co ltd
Priority date: 2015-02-28
Filing date: 2015-02-28
Publication date: 2020-05-22
Anticipated expiration: 2035-02-28
Also published as: CN105984968A

Abstract

The invention discloses an aeration device for increasing dissolved oxygen in water by utilizing sound energy, belonging to the water treatment process technology. The technical device converts sound energy generated after a water crane drops water and impacts a metal steel drum into mechanical energy for water molecule vibration through a mechanical amplification horn steel basin, and the water body local pressure is increased due to the water molecule vibration. According to henry's law: under isothermal conditions, the solubility of a gas in solution is directly proportional to the pressure of the gas at the liquid-gas interface. Therefore, the water and dissolved oxygen treated by the drum-shaped acoustic energy water treatment aeration device are 50 percent higher than that of the traditional drop aeration method. The device comprises (1) a steel drum; (2) mechanically amplifying the horn steel basin; (3) a steel basin acted by sound energy; (4) a water tank; (5) an echogenic wall; (6) a support; (7) water crane, etc. The water tank can be made of reinforced concrete or steel.

Description

Drum-shaped acoustic energy water treatment aeration device

The technical field is as follows:

the patent technology relates to a technical device for enhancing water quality aeration oxidation by adopting acoustic energy. The water quality aeration oxidation technology is characterized in that sound energy generated after a water body impacts a metal steel drum is converted into mechanical energy and applied to water to be treated, so that the oxidation effect of the water is enhanced. Particularly, the drum-shaped acoustic energy aeration water treatment device adopts the drum-shaped acoustic energy aeration technology and the drum-shaped acoustic energy aeration device which adopts water flow to impact the drum-shaped surface in the drum-shaped aeration device and then converts acoustic energy into mechanical energy of water vibration.

Secondly, the background technology:

in the traditional water treatment process, in order to remove some chemical components which can be oxidized in water, the water to be treated is aerated and oxidized, so that the chemical components which can be oxidized in water are fully contacted with oxygen in the air, and the effect of purifying water quality is achieved through water quality oxidation.

The drop aeration is a common method in the aeration oxidation technology, and has the characteristics of simple equipment structure, flexible engineering application, convenient equipment maintenance and the like, particularly, many water treatment projects have the original conditions of raw water lifting and drop height, and the drop aeration method is applied under the conditions, so that the operation cost is saved and the installation is convenient. Therefore, the drop aeration method is widely applied to water treatment engineering. However, the drop aeration method generally improves the dissolved oxygen capacity of the treated water, and according to engineering practice statistics: the drop aeration method only improves the dissolved oxygen of the treated water to 2-4mg/l, so the drop aeration method has poor water quality oxidation effect.

The drum-shaped acoustic energy water treatment aeration device adopts the principle of a drop aeration method, and simultaneously increases the acoustic energy absorption of water body impacting the drum-shaped surface when water drops. Therefore, the drum-shaped acoustic energy water treatment aeration device has the advantages of a drop aeration method and can also improve the effect of water quality oxidation. Through engineering practice explanation: the drum-shaped acoustic energy water treatment aeration device can improve the dissolved oxygen of 6-7mg/l of the water to be treated.

The invention content is as follows:

the mechanism of increasing aeration dissolved oxygen of the drum-shaped acoustic energy water treatment aeration device is as follows:

the drum-shaped acoustic energy water treatment aeration device utilizes the sound wave with broadband frequency generated by impacting the drum-shaped surface of metal when the treated water falls, the frequency range of the sound wave is between the frequency of infrasonic wave and the frequency of ultrasonic wave, the directionality of the sound wave is good, the penetrating power is strong, and the sound wave has long transmission distance in the solution. Through the impact energy conversion of water for acoustic energy, reconvert mechanical vibration energy, mechanical vibration energy is strengthened through the vibration of echo wall, and rethread mechanical expansion steel basin radiates the sound wave to the water deep layer. The treated water is subjected to the action of sound waves, and micro bubbles dissolved in the water body continuously keep vibrating and disturbing with the treated water body under the action of the sound waves, so that the dissolved oxygen of the treated water body can be improved.

When the sound pressure or sound intensity in the water is subjected to pressure to a certain degree, the air bubbles expand rapidly and then close suddenly. In the process, shock waves are generated at the moment of closing the bubbles, so that 1012-1013pa local pressure is generated around the bubbles, and the huge pressure generated by the ultrasonic cavitation can effectively destroy the surface tension of water, thereby being beneficial to forming steam type cavitation in the water and dissolving oxygen in the air. The steam type cavitation is formed to directly and repeatedly impact the microbubbles of the oxygen. According to henry's law: under isothermal conditions, the solubility of a gas in solution is directly proportional to the pressure of the gas at the liquid-gas interface. Therefore, the local pressure of the water body is increased, and the gas dissolving capacity of the water is enhanced, which is the principle that the dissolved oxygen of the drum-shaped acoustic energy water treatment aeration device is higher than that of the traditional drop aeration method when the water is treated.

When the sound waves are transmitted in water, positive and negative alternating sound pressure is generated to form jet flow to impact a gas-liquid interface, meanwhile, sound flow and micro sound flow are generated due to the nonlinear effect, and high-speed micro jet flow is generated at the solid and liquid interface by ultrasonic cavitation.

The technical device is mainly applied to water treatment engineering to increase the gas dissolution of the treated water and improve the oxidation effect of the treated water.

According to the technology, under the condition that energy consumption and equipment cost are not increased, the structure and the shape of the traditional drop aeration method are changed, the content of dissolved gas in water and the water body oxidation effect are improved, so that the operation efficiency of a water treatment system is improved, the production cost of equipment with the same effect as the traditional drop aeration method is reduced, and the occupied area and the volume of the equipment with the same effect as the traditional drop aeration method are reduced.

Description of the drawings:

the invention is further described with reference to the following figures. FIG. 1 is a top view of a drum-shaped acoustic energy water treatment aeration apparatus; fig. 2 is a front view of a drum-shaped acoustic energy water treatment aeration apparatus.

The drum-shaped acoustic energy water treatment aeration device comprises (1) a steel drum; (2) mechanically amplifying the horn steel basin; (3) a steel basin acted by sound energy; (4) a water tank; (5) an echogenic wall; (6) a support; (7) water crane, etc.

The steel drum (1) is made of stainless steel materials and is welded at the upper end of the concentric circle of the stainless steel mechanical amplification loudspeaker steel basin (2); (3) the acoustic energy action steel basin is welded on the outer circular edge of the mechanical amplification horn steel basin (2), and the stainless steel mechanical amplification horn steel basin is arranged on the lower side of the concentric circle; (1) the steel drum, (2) the steel tuba-shaped steel basin of mechanical amplification, (3) the steel basin of acoustic energy action is wholly fixed in the middle of the concentric circle of the water tank (4) through the bracket (6); an echo wall (5) is arranged at the lower end of the integral concentric circle of the steel drum (1), the steel horn-shaped steel basin (2) with mechanical amplification and the steel basin (3) with acoustic energy action; the water crane (7) is arranged at the upper end of the concentric circle of the steel drum.

The water tank (4) can be made of reinforced concrete materials or stainless steel materials.

Fifthly, the method is implemented:

the treated water is sent into the drum-shaped acoustic energy water treatment aeration device through the water crane (7), and the water crane (7) is arranged at the upper end of the steel drum and has a vertical distance of more than 1 meter, so the treated water falls and impacts the steel drum (1) to play a role in knocking the steel drum to provide acoustic energy motive power. The sound energy of the water hammer steel drum is reflected to (2) the stainless steel mechanical amplification loudspeaker steel basin through the echo wall (5) to play the roles of mechanical amplification and conduction. (2) The stainless steel mechanical amplification horn steel basin conducts the amplified sound energy to the sound energy action steel basin (3), and when the treated water flows to the sound energy action steel basin (3) from the steel drum, the sound energy action steel basin (3) conducts the sound energy to the treated water, so that the effects of increasing the dissolved oxygen of the treated water and strengthening the oxidation treatment are achieved.

Claims

1. The drum-shaped acoustic energy water treatment aeration device is characterized by comprising a steel drum (1), a mechanical amplification horn steel basin (2), an acoustic energy action steel basin (3), a water tank (4), an echo wall (5), a bracket (6) and a water crane (7), wherein the steel drum (1) is welded at the upper end of the concentric circle of the mechanical amplification horn steel basin (2); the acoustic energy action steel basin (3) is welded on the outer circular edge of the mechanical amplification horn steel basin (2) in a surrounding mode, and the acoustic energy action steel basin (3) is located on the lower side of a concentric circle of the mechanical amplification horn steel basin (2); the steel drum (1), the mechanical amplification horn steel basin (2) and the acoustic energy action steel basin (3) are integrally fixed in the middle of the concentric circle of the water tank (4) through the bracket (6); an echo wall (5) is arranged at the lower end of the integral concentric circle of the steel drum (1), the mechanical amplification loudspeaker steel basin (2) and the sound energy action steel basin (3), the echo wall (5) is in an arc shape with one open end, and the opening direction of the echo wall is opposite to the opening direction of the mechanical amplification loudspeaker steel basin (2); the water crane (7) is arranged at the upper end of the concentric circle of the steel drum (1);

when water flow falls, the water flow impacts the drum-shaped surface of the metal to generate sound waves, the frequency of the sound waves ranges from infrasonic waves to ultrasonic waves, and the drum-shaped acoustic energy water treatment aeration device converts acoustic energy into mechanical vibration energy; the echo wall (5) reflects sound energy to the surface of the metal plate and converts the sound energy into mechanical vibration of water.