Aeration fine filtration equipment

Abstract

The present application provides an aeration fine filtration device, which includes an aeration barrel, a water storage barrel is arranged inside the aeration barrel, the upper ends of the aeration barrel and the water storage barrel are both opened, and a first aeration plate with multiple through holes is arranged on the top between the two, and a second aeration plate with multiple through holes is also arranged between the aeration barrel and the water storage barrel at the lower part of the first aeration plate. The present invention also arranges a second aeration plate at the lower part of the first aeration plate, so that the sewage is divided into multiple thin streams after passing through the through holes on the second aeration plate, reducing the speed of the water flow downward, further increasing the chance of the water flow contacting with the air, increasing the oxygen in the sewage, and decomposing more organic pollutants and aerobic microorganisms.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment, and in particular to an aeration fine filtration device. Background Art

[0002] Currently, in the process of water purification, the technology is widely used because it can provide sufficient oxygen for aerobic microorganisms in the water, allowing aerobic microorganisms to oxidize and decompose organic pollutants in the water, thereby improving the effect of water treatment.

[0003] However, the key to aerobic treatment technology is to dissolve as much air as possible into the water to increase the oxygen content in the water and provide enough oxygen for aerobic microorganisms in the water. Patent publication number CN108706775A, patent name A water treatment system and treatment method patent document, which adopts the method of setting water holes on the aeration plate to increase the oxygen content in the water to improve the water treatment effect. However, if only one aeration plate is set, the amount of oxygen dissolved in the sewage is not much, and the decomposition rate of organic pollutants and aerobic microorganisms in the water is low, resulting in poor water treatment effect. Summary of the invention

[0004] The present application provides an aeration fine filtration device, which can improve the decomposition rate of organic pollutants and aerobic microorganisms in water by increasing the dissolved oxygen rate of water, thereby increasing the effect of water treatment.

[0005] The present application discloses an aeration fine filtration device, which includes an aeration barrel, a water storage barrel arranged inside the aeration barrel, the upper ends of the aeration barrel and the water storage barrel are both opened, and a first aeration plate with multiple through holes is arranged on the top between the two, and a second aeration plate with multiple through holes is also arranged between the aeration barrel and the water storage barrel at the lower part of the first aeration plate.

[0006] As described above, the present invention further provides a second aeration plate at the lower part of the first aeration plate, so that after the sewage passes through the through holes on the second aeration plate, it is divided into multiple thin streams, which reduces the downward speed of the water flow, further increases the opportunity for the water flow to contact with the air, increases the oxygen in the sewage, and decomposes more organic pollutants and aerobic microorganisms.

[0007] Preferably, the aperture of the through holes on the second aeration plate is smaller than the aperture of the through holes on the first aeration plate.

[0008] From the above, when the aperture of the through hole on the second aeration plate is smaller than the aperture of the through hole on the first aeration plate, after the sewage is aerated by the second aeration plate, the water flow is thinner, which further reduces the falling speed of the water flow, thereby increasing the chance of sewage contacting with the air during the falling process and improving the decomposition rate of organic pollutants.

[0009] Preferably, at least one branch pipe connected to the bottom of the aeration barrel and arranged obliquely upward is provided on the outside of the aeration barrel, and an exhaust mechanism is provided at the end of the branch pipe;

[0010] The exhaust mechanism comprises at least two coaxially arranged rotors and at least two fan blades, wherein the rotor is arranged at the upper part of the branch pipe, and the fan blade is arranged in the branch pipe.

[0011] As shown above, a branch pipe connected to the bottom of the aeration barrel is provided on the outside of the aeration barrel, and the rotor of the exhaust mechanism provided at the end of the branch pipe rotates in the horizontal plane under the blowing of natural wind, and at the same time drives the fan blades 273 in the branch pipe 26 to rotate, so that the air, organic pollutants and gases generated after the decomposition of aerobic microorganisms in the aeration barrel 21 are discharged through the port of the branch pipe 26, thereby accelerating the gas circulation in the aeration barrel, allowing more air to enter the aeration barrel through the through holes on the first and second aeration plates, and dissolve into the sewage flowing down from the through holes on the first and second aeration plates, thereby further improving the decomposition rate of organic pollutants and aerobic microorganisms.

[0012] Preferably, an aeration outlet pipe is provided at the bottom between the aeration tank and the water storage tank, the upper end of which is connected to the aeration tank.

[0013] The filter tank is arranged at the lower part of the aeration tank, and a plurality of filter layers are arranged in the filter tank.

[0014] The upper end of the filter water inlet pipe is arranged in the upper part of the filter barrel, and the lower end is connected with the lower part of the aeration water outlet pipe.

[0015] The lower end of the filter outlet pipe is connected to the bottom of the filter barrel, and the upper end is connected to the clean water outlet pipe.

[0016] As shown above, after aeration in the aeration barrel, organic pollutants and aerobic microorganisms are decomposed, and after filtering through the filter layer in the filter barrel, the sewage becomes clean water.

[0017] Preferably, it also includes a backwashing tank arranged at the lower part of the aeration tank, and a drain port is arranged at the bottom of the backwashing tank.

[0018] The upper end of the inverted U-shaped backwash pipe is arranged at the upper part of the filter barrel, and the lower end is placed in the backwash barrel, and the upper end of the backwash pipe is arranged higher than the lower end.

[0019] As described above, the fine filtration device also has a backwashing function. When the filter layer in the filter barrel is blocked, the pressure in the filter barrel is greater than the external pressure. The water in the filter barrel enters it through the upper port of the backwash pipe, passes through the lower port of the backwash pipe to the backwash barrel, and then is discharged through the drain port at the bottom of the backwash barrel to flush the filter layer in the filter barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A schematic diagram of the structure of the aeration fine filtration equipment provided in the embodiment of the present application;

[0021] Figure 2 It is a schematic diagram of the structure of the exhaust mechanism provided in the embodiment of the present application.

[0022] Reference numerals:

[0023] 1. Sewage inlet pipe;

[0024] 2 aeration device; 21 aeration barrel; 22 water storage barrel; 23 aeration outlet; 24 first aeration plate; 25 second aeration plate; 26 branch pipe; 27 exhaust mechanism; 271 rotor; 272 support frame; 273 fan blade; 274 rotating shaft;

[0025] 3 filtering device; 31 filtering barrel; 32 filtering water inlet pipe; 33 filtering water outlet pipe; 34 filtering layer;

[0026] 4. Clean water outlet pipe;

[0027] 5 backwashing device; 51 backwashing bucket; 52 backwashing pipe; 511 drain outlet. DETAILED DESCRIPTION

[0028] The present application is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0029] like Figure 1 As shown, the present application provides an aeration fine filtration device, and the direction of the arrow shown in the figure is the flow direction of water during the water purification process.

[0030] The aeration fine filtration equipment comprises a sewage inlet pipe 1, an aeration device 2, a filtration device 3 and a clean water outlet pipe 4 which are connected in sequence.

[0031] Aeration device 2

[0032] The aeration device 2 includes an aeration barrel 21, in which a water storage barrel 22 is provided integrally with the aeration barrel 21. The bottom between the aeration barrel 21 and the water storage barrel 22 is connected to the upper end of a vertically arranged aeration outlet pipe 23, and the tops of the aeration barrel 21 and the water storage barrel 22 are both opened; a first aeration plate 24 with a plurality of through holes is provided between the aeration barrel 21 and the water storage barrel 22, and the upper surface of the first aeration plate 24 is in the same plane as the upper end of the water storage barrel 22; a second aeration plate 25 with a plurality of through holes is also provided between the aeration barrel 21 and the water storage barrel 22 at the lower part of the first aeration plate 24; the sewage inlet pipe 1 passes through the aeration barrel 21 and is connected to the bottom of the water storage barrel 22, so as to provide the sewage to be treated to the water storage barrel 22. After the sewage enters the water storage barrel 22 through the sewage inlet pipe 1, it gradually reaches the top of the water storage barrel 22 and is first aerated through the through holes on the first aeration plate 24. In order to prevent the water on the first aeration plate 24 from overflowing, the height of the aeration barrel 21 must be higher than the upper surface of the first aeration plate 24.

[0033] The principle of aeration of sewage through the first and second aeration plates 24, 25 is as follows:

[0034] The sewage first passes through the through holes of the first aeration plate 24 and is divided into multiple water flows, which can reduce the speed of the water flow, increase the space in contact with the air, and allow more air to be integrated into the sewage. The aerobic microorganisms in the water can obtain sufficient oxygen, so that the aerobic microorganisms in the water can more thoroughly oxidize and decompose the organic pollutants, and discharge phosphorus substances, ammonia, carbon dioxide and other harmful gases in the water. The aperture of the through hole on the second aeration plate 25 can be set differently from the aperture of the through hole on the first aeration plate 24. For example, the distance between the first and second aeration plates 24 and 25 is reduced, and the aperture of the through hole on the second aeration plate 25 is smaller than the aperture of the through hole on the first aeration plate 24, so that the water flow of the sewage after passing through the second aeration plate is thinner, further increasing the oxygen in the sewage, and decomposing the organic pollutants more thoroughly.

[0035] In addition, the water storage barrel 22 is provided with an opening, and the sewage entering therein from the sewage inlet pipe 1 can be in contact with the air in advance, so that the oxygen content in the sewage is increased, so as to more thoroughly degrade the organic pollutants in the water in the aeration barrel.

[0036] In addition, in order to increase the dissolved oxygen rate of the sewage in the aeration barrel 21 and allow more air to dissolve into the sewage, a branch pipe 26 disposed obliquely upward and connected to the aeration barrel 21 is disposed on both sides of the bottom of the aeration barrel 21, and an exhaust mechanism 27 is disposed at the end of the branch pipe 26. The exhaust mechanism 27 includes a rotor 271, a support frame 272 and a fan blade 273 connected to the rotating shaft 274 in sequence from top to bottom. The above rotor 271 is at least two, which are disposed at the upper end of the rotating shaft 274 and driven to rotate by natural wind to drive the rotating shaft 274 to rotate; there are at least two support frames 272, which are connected to the rotating shaft 274 through bearings, and the support frames 272 are supported on the port of the branch pipe 26; at least two fan blades 273 are fixedly connected to the lower end of the rotating shaft 274, and the fan blades 273 are disposed in the branch pipe 26.

[0037] The natural wind drives the rotor 271 to rotate with the rotating shaft 274, and the fan blades 273 arranged at the lower end of the rotating shaft 274 rotate therewith. The rotation of the fan blades 273 causes the air that enters the aeration barrel 21 through the through holes on the first and second aeration plates and the gas generated by the decomposition of the microorganisms and organic pollutants to be discharged from the branch pipe 26, thereby accelerating the gas circulation in the aeration barrel 21, allowing more air to enter the aeration barrel 21 from the through holes on the first and second aeration plates 24 and 25, and dissolve into the sewage flowing down from the through holes, thereby improving the decomposition rate of the microorganisms and organic pollutants.

[0038] Filter device 3

[0039] The filter device 3 is arranged at the lower part of the aeration device 2, and includes a filter water inlet pipe 32, a filter water outlet pipe 33 and a filter barrel 31 connected to both. The filter water inlet pipe 32 is connected to the upper part of the filter barrel 31 and the lower end of the aeration water outlet pipe 23, respectively, and the filter water outlet pipe 33 is connected to the bottom of the filter barrel 31 and the clean water outlet pipe 4, respectively.

[0040] After aeration by the first and second aeration plates, the organic pollutants are decomposed and continue to mix with water. The aerated sewage flows into the filter barrel 31 through the aeration outlet pipe 23 and the filter inlet pipe 32 .

[0041] Multiple filter layers 34 are arranged in the filter barrel 31, and the filter apertures of the filter layers decrease from top to bottom, so that large particles of impurities are first filtered out by the first filter layer, small and medium particles are filtered out by the second filter layer, and fine particles and suspended particles are filtered out by the third filter layer.

[0042] The clean water after filtering out the impurities and tiny particles in the sewage flows out from the clean water outlet pipe 4 through the filtered water outlet pipe 33 .

[0043] Backwash device 5

[0044] The aeration fine filtration equipment described above also includes a backwashing device 5, which includes a backwashing bucket 51 and a backwashing pipe 52 that uses the siphon principle to absorb dirty water in the filter bucket 31 into the backwashing bucket 51 to wash the filter layer 34 of the filter bucket 31. A drain port 511 is provided at the bottom of the backwashing bucket 51 to facilitate the discharge of dirty water at any time. The backwashing pipe 52 is an inverted U-shaped pipe, the first end of which is arranged at the upper end in the filter bucket 31, the second end is arranged in the backwashing bucket 51, and the first end is arranged higher than the second end, and the first end of the backwashing pipe 52 is connected to the upper end of the filter water inlet pipe 32.

[0045] When the filter layer in the filter barrel 31 is blocked by impurities, the water level in the filter barrel 31 gradually rises, and aerated sewage is accumulated in the filter water inlet pipe 32, the backwash pipe 52 and the aeration barrel 21. When the sewage level in the backwash pipe 52 reaches the highest point of the backwash pipe 52, the siphon principle occurs, and the backwash pipe 52 continuously absorbs sewage from the filter barrel 31 through its first end, so that the impurities and water in the filter layer 34 in the filter barrel 31 are sucked into the backwash pipe 52 together, flow from the lower end of the backwash pipe 52 into the backwash barrel 51, and then discharged from the drain port 511; as the water level in the filter barrel 31 and the water level in the aeration barrel 21 decrease, when all the water in the aeration barrel 21 and the filter water inlet pipe 32 is sucked into the backwash pipe 52, the air in the aeration barrel 21 enters the filter barrel 31 through the filter water inlet pipe 32, the siphon phenomenon no longer occurs, and the backwash pipe 52 no longer absorbs the water in the filter barrel 31. The backwash pipe 52 utilizes the siphon principle to extract water and impurities in the filter layer into the backwash bucket 51, so as to reversely flush the filter layer and remove impurities in the filter layer. The backwash device can ensure the cleanliness of the filter layer to extend its service life.

[0046] In order to improve the efficiency of sewage treatment, Figure 1 As shown, the aforementioned filtering device 3, the clean water outlet pipe 4, and the backwashing pipe in the backwashing device 5 are respectively provided with two, and are symmetrically arranged on the left and right. This can improve the aeration and filtering efficiency and increase the speed of sewage treatment.

[0047] Compared with the prior art, the aeration fine filtration equipment is provided with a second aeration plate 25 below the first aeration plate 24, which further increases the chance of sewage contacting with air and improves the dissolved oxygen rate; a branch pipe 26 connected to the aeration barrel 21 is respectively provided on both sides of the bottom thereof, and an exhaust mechanism 27 is provided at the end of the branch pipe 26, so that the blades of the exhaust mechanism 27 are driven to rotate by natural force, so that the air in the aeration barrel 21 and the gas generated by the decomposition of organic pollutants are discharged through the branch pipe 26, thereby enhancing the air circulation in the aeration barrel 21, allowing more air to enter the aeration barrel 21 through the first and second aeration plates 24 and 25 and dissolve in the anhydrous water, thereby improving the decomposition rate of organic pollutants.

[0048] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An aeration fine filtration device, comprising an aeration barrel (21), a water storage barrel (22) being provided inside the aeration barrel (21), the upper ends of the aeration barrel (21) and the water storage barrel (22) being both open, and a first aeration plate (24) having a plurality of through holes being provided on the top between the two, characterized in that: A second aeration plate (25) having a plurality of through holes is further arranged at the lower part of the first aeration plate (24) between the aeration barrel (21) and the water storage barrel (22), and the diameter of the through holes on the second aeration plate (25) is smaller than the diameter of the through holes on the first aeration plate (24); At least one branch pipe (26) is disposed obliquely upward and connected to the bottom of the aeration barrel (21) on the outside of the aeration barrel (21), and an exhaust mechanism (27) is disposed at the end of the branch pipe (26); The exhaust mechanism (27) comprises at least two coaxially arranged rotors (271) and at least two fan blades (273); the rotor (271) is arranged on the upper part of the branch pipe (26), and the fan blades (273) are arranged in the branch pipe (26).

2. The aeration fine filtration equipment according to claim 1, characterized in that: The sewage inlet pipe (1) passes through the aeration tank (21) and is connected to the bottom of the water storage tank (22). An aeration water outlet pipe (23) whose upper port is connected to the aeration barrel (21) and the water storage barrel (22) is provided at the bottom between the aeration barrel (21) and the water storage barrel (22). The filter barrel (31) is arranged at the lower part of the aeration barrel (21), and a plurality of filter layers are arranged therein. The upper end of the filtration water inlet pipe (32) is arranged at the upper part of the filtration barrel (31), and the lower end is communicated with the lower end of the aeration water outlet pipe (23). The lower end of the filtered water outlet pipe (33) is connected to the bottom of the filter barrel (31), and the upper end is connected to the clean water outlet pipe (4).

3. The aeration fine filtration equipment according to claim 2, characterized in that: It also includes a backwashing bucket (51) arranged at the lower part of the aeration bucket (21), and a drain port (511) is arranged at the bottom of the backwashing bucket (51). The upper port of the inverted U-shaped backwash pipe (52) is arranged at the upper part of the filter barrel (31), and the lower port is placed in the backwash barrel (51), and the upper port of the backwash pipe (52) is arranged higher than the lower port.

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