Aeration fine filtration equipment
Technical Field
The application relates to the technical field of water treatment, in particular to aeration fine filtration equipment.
Background
At present, in the water purification treatment process, the technology can provide enough oxygen for aerobic microorganisms in water, so that the aerobic microorganisms oxidize and decompose organic pollutants in the water, thereby improving the water treatment effect and being widely used.
However, the key point of the aerobic treatment technology is that as much air as possible is melted into water to increase the oxygen content in the water and provide enough oxygen for aerobic microorganisms in the water. Patent publication No. CN108706775A, patent name is a patent document of a water treatment system and a treatment method, which adopts a mode of arranging water through holes on an aeration plate to increase the oxygen content in water so as to improve the water treatment effect. However, only one aeration plate is arranged, the amount of oxygen blended into the sewage is small, and the decomposition rate of organic pollutants and aerobic microorganisms in the water is low, so that the water treatment effect is poor.
Disclosure of Invention
The application provides aeration fine filtration equipment, which improves the dissolution rate of water to improve the decomposition rate of organic pollutants and aerobic microorganisms in the water, thereby improving the water treatment effect.
The application relates to aeration fine filtering equipment which comprises an aeration barrel, wherein a water storage barrel is sleeved in the aeration barrel, the upper ends of the aeration barrel and the water storage barrel are both provided with openings, a first aeration plate with a plurality of through holes is arranged at the top between the aeration barrel and the water storage barrel, and a second aeration plate with a plurality of through holes is arranged between the aeration barrel and the water storage barrel at the lower part of the first aeration plate.
The invention further provides a second aeration plate at the lower part of the first aeration plate, so that the sewage is divided into a plurality of trickles after passing through the through holes on the second aeration plate, the downward speed of the water flow is reduced, the contact opportunity of the water flow and air is further increased, the oxygen in the sewage is increased, and more organic pollutants and aerobic microorganisms are decomposed.
Preferably, the aperture of the through hole on the second aeration plate is smaller than that of the through hole on the first aeration plate.
From the top, when the through-hole aperture on the second aeration board is less than the through-hole aperture on the first aeration board sets up, sewage is through the second aeration board aeration back, and rivers are finer, have further reduced the speed that rivers fall to increase the sewage at the in-process that falls and the chance of air contact, improve the decomposition rate of organic pollutant.
Preferably, at least one branched pipe which is communicated with the bottom of the aeration barrel and is arranged obliquely upwards is arranged at the outer side of the aeration barrel, and an exhaust mechanism is arranged at the end part of the branched pipe;
the exhaust mechanism comprises at least two rotors and at least two fan blades which are coaxially arranged, the rotors are arranged on the upper parts of the branched pipes, and the fan blades are arranged in the branched pipes.
From the top, set up the branch pipe rather than the bottom intercommunication in the outside of aeration bucket, the rotor of exhaust mechanism that sets up in the end of branch pipe rotates in the horizontal plane under the blowing of natural wind-force, the flabellum 273 in the drive branch pipe 26 rotates simultaneously, make the air in the aeration bucket 21, the gas that produces after organic pollutant and good appearance biological decomposition pass through the port of branch pipe 26 and discharge, accelerate the gas circulation in the aeration bucket, make more air get into in the aeration bucket through the through-hole on first, two aeration board, dissolve in the sewage that flows down from the through-hole on first, two aeration board, further improve organic pollutant and aerobic microorganism's decomposition rate.
Preferably, an aeration water outlet pipe with the upper end communicated with the aeration water tank is arranged at the bottom between the aeration water tank and the water storage tank,
The filter vat is arranged at the lower part of the aeration vat, a plurality of filter layers are arranged in the filter vat,
The upper end of the filtering water inlet pipe is arranged at the upper part in the filtering barrel, the lower end is communicated with the lower part of the aeration water outlet pipe,
The lower end of the filtering water outlet pipe is communicated with the bottom of the filtering barrel, and the upper end of the filtering water outlet pipe is communicated with the clear water outlet pipe.
After aeration in the aeration tank, organic pollutants and aerobic microorganisms are decomposed, and sewage is changed into clear water after being filtered by a filter layer in the filter tank.
Preferably, the device also comprises a back flushing barrel arranged at the lower part of the aeration barrel, the bottom of the back flushing barrel is provided with a water outlet,
The upper end of the reverse U-shaped back flushing pipe is arranged at the upper part in the filter vat, the lower end of the reverse U-shaped back flushing pipe is arranged in the back flushing vat, and the upper end of the reverse U-shaped back flushing pipe is higher than the lower end of the reverse U-shaped back flushing pipe.
From the above, this fine filter device still has back flush function, when the filter layer in the filter vat blocks up, causes the pressure in the filter vat to be greater than external pressure, and the water in the filter vat gets into it through the upper port of back flush pipe, passes back flush pipe's lower port to back flush barrel in, then discharges through the outlet of back flush barrel bottom, washes the filter layer in the filter vat.
Drawings
FIG. 1 is a schematic structural view of an aeration fine filtration device according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an exhaust mechanism according to an embodiment of the present application.
Reference numerals:
1a sewage inlet pipe;
2 an aeration device, 21 an aeration bucket, 22 a water storage bucket, 23 an aeration water outlet, 24 a first aeration plate, 25 a second aeration plate, 26 a branched pipe, 27 an exhaust mechanism, 271 a rotor, 272 a supporting frame, 273 fan blades and 274 a rotating shaft;
3 a filter device, 31 a filter barrel, 32 a filter water inlet pipe, 33 a filter water outlet pipe and 34 a filter layer;
4, a clear water outlet pipe;
5 back flushing devices, 51 back flushing barrels, 52 back flushing pipes and 511 water outlets.
Detailed Description
The application will now be described in further detail with reference to specific examples thereof in connection with the accompanying drawings.
As shown in FIG. 1, the application provides an aeration fine filtration device, and the arrow direction shown in the figure is the flow direction of water flow in the water purification treatment process.
The aeration fine filtration equipment comprises a sewage inlet pipe 1, an aeration device 2, a filtering device 3 and a clear water outlet pipe 4 which are communicated in sequence.
Aeration device 2
The aeration device 2 comprises an aeration barrel 21, wherein a water storage barrel 22 integrally arranged with the aeration barrel 21 is sleeved in the aeration barrel 21, the bottom between the aeration barrel 21 and the water storage barrel 22 is communicated with the upper end of an aeration water outlet pipe 23 vertically arranged, the tops of the aeration barrel 21 and the water storage barrel 22 are both arranged in an opening mode, a first aeration plate 24 with a plurality of through holes is arranged between the aeration barrel 21 and the water storage barrel 22, the upper surface of the first aeration plate 24 is in the same plane with the upper port of the water storage barrel 22, a second aeration plate 25 with a plurality of through holes is also arranged between the lower part of the first aeration plate 24 and the water storage barrel 22, and a sewage inlet pipe 1 is communicated with the bottom of the water storage barrel 22 after passing through the aeration barrel 21 and is used for providing sewage to be treated for the water storage barrel 22. After the sewage enters the water storage barrel 22 through the sewage inlet pipe 1, the sewage gradually reaches the top of the water storage barrel 22, and is firstly aerated through the through holes on the first aeration plate 24, wherein the height of the aeration barrel 21 is higher than the upper surface of the first aeration plate 24 in order to prevent the water on the first aeration plate 24 from overflowing.
The principle of aeration of sewage through the aerated first and second aeration plates 24,25 is as follows:
The sewage firstly passes through the through holes of the first aeration plate 24 and then divides the water into a plurality of water streams, so that the speed of the underwater flow can be reduced, the space contacted with the air is increased, more air is mixed into the sewage, the aerobic microorganisms can obtain sufficient oxygen, the aerobic microorganisms in the water can more thoroughly oxidize, decompose and degrade organic pollutants in the water, and harmful gases such as phosphorus substances, ammonia, carbon dioxide and the like in the water can be discharged. The aperture of the through holes on the second aeration plate 25 and the aperture of the through holes on the first aeration plate 24 can be set unequal, for example, the distance between the first aeration plate 24 and the second aeration plate 25 is reduced, the aperture of the through holes on the second aeration plate 25 is smaller than that of the through holes on the first aeration plate 24, so that the water flow of sewage after passing through the second aeration plate is finer, the oxygen in the sewage is further increased, and the organic pollutants are decomposed more thoroughly.
In addition, the water storage barrel 22 is arranged at an opening, and sewage entering the water storage barrel from the sewage inlet pipe 1 can be contacted with air in advance, so that the oxygen content in the sewage is increased, and organic pollutants in the water can be degraded more thoroughly in the aeration barrel.
In order to increase the oxygen dissolution rate of the sewage in the aeration tank 21, more air is dissolved in the sewage, a branch pipe 26 which is provided obliquely upward and communicates with the aeration tank 21 is provided on both sides of the bottom of the aeration tank 21, and an exhaust mechanism 27 is provided at the end of the branch pipe 26. The exhaust mechanism 27 comprises at least two rotors 271, a support frame 272 and fan blades 273 which are sequentially connected on a rotating shaft 274 from top to bottom, wherein the at least two rotors 271 are arranged at the upper end part of the rotating shaft 274 and are driven to rotate by natural wind so as to drive the rotating shaft 274 to rotate, the at least two support frames 272 are connected with the rotating shaft 274 through bearings, the support frames 272 are supported on ports of the branched pipes 26, the lower end part of the rotating shaft 274 is fixedly connected with the at least two fan blades 273, and the fan blades 273 are arranged in the branched pipes 26.
The natural wind blows to drive the rotor 271 to rotate along with the rotating shaft 274, and the fan blades 273 arranged at the lower end of the rotating shaft 274 rotate along with the rotating shaft, so that air entering the aeration barrel 21 through the through holes on the first aeration plate and the second aeration plate and air generated by decomposing the aerobic microorganisms and the organic pollutants are discharged from the branched pipe 26, the air circulation in the aeration barrel 21 is accelerated, more air enters the aeration barrel 21 from the through holes on the first aeration plate 24 and the second aeration plate 25 and is dissolved into sewage flowing down from the through holes, and the decomposition rate of the aerobic microorganisms and the organic pollutants is improved.
Filter device 3
The filtering device 3 is provided at the lower portion of the aeration device 2, and includes a filtering water inlet pipe 32, a filtering water outlet pipe 33, and a filtering tub 31 communicating with both. Wherein the filtering water inlet pipe 32 is respectively communicated with the upper part of the filtering barrel 31 and the lower port of the aeration water outlet pipe 23, and the filtering water outlet pipe 33 is respectively communicated with the bottom of the filtering barrel 31 and the clear water outlet pipe 4.
The organic pollutants are decomposed after aeration by the first aeration plate and the second aeration plate and are continuously mixed with water, and the aerated sewage flows into the filter barrel 31 through the filter water inlet pipe 32 by the aeration water outlet pipe 23.
The filter barrel 31 is provided with a plurality of layers of filter layers 34, the filter pore diameters of the filter layers are sequentially reduced from top to bottom, so that large-particle impurities are filtered by the first layer of filter layer, small-particle impurities are filtered by the second layer of filter layer, and fine particles and suspended particles are filtered by the third layer of filter layer.
The clean water after filtering out impurities and tiny particles in the sewage flows out of the clean water outlet pipe 4 through the filtering outlet pipe 33.
Backwash device 5
The aeration fine filtration apparatus described above further comprises a back washing device 5 including a back washing tub 51, and a back washing pipe 52 for washing the filter layer 34 of the filter tub 31 by sucking dirty water in the filter tub 31 into the back washing tub 51 by using a siphon principle. The bottom of the back washing tub 51 is provided with a drain outlet 511 for conveniently draining dirty water at any time. The back flushing pipe 52 is an inverted U-shaped pipe, a first end of which is disposed at an upper end in the filter vat 31, a second end of which is disposed in the back flushing vat 51, and the first end is higher than the second end, and the first end of the back flushing pipe 52 is communicated with an upper port of the filter water inlet pipe 32.
When the filtering layer in the filtering barrel 31 is blocked by impurities, the water level in the filtering barrel 31 is gradually increased, the sewage after aeration is accumulated in the filtering water inlet pipe 32, the back flushing pipe 52 and the aeration barrel 21, when the sewage level in the back flushing pipe 52 reaches the highest point of the back flushing pipe 52, the siphon principle occurs, the back flushing pipe 52 continuously sucks the sewage from the filtering barrel 31 through the first end thereof, the impurities in the filtering layer 34 in the filtering barrel 31 and the water are sucked into the back flushing pipe 52 together, flow into the back flushing barrel 51 from the lower end of the back flushing pipe 52 and then are discharged from the water outlet 511, and when the water in the aeration barrel 21 and the water in the filtering water inlet pipe 32 are all sucked into the back flushing pipe 52, the siphon phenomenon does not occur any more when the air in the aeration barrel 21 enters the filtering barrel 31 through the filtering water inlet pipe 32, and the back flushing pipe 52 does not suck the water in the filtering barrel 31 any more. The backwash tube 52 pumps water and impurities in the filter layer into the backwash tank 51 by using a siphon principle to reversely flush the filter layer and remove impurities in the filter layer. The back flushing device can ensure the cleanness of the filter layer so as to prolong the service life of the filter layer.
In order to improve the sewage treatment efficiency, as shown in fig. 1, two backwash pipes in the filtering device 3, the clean water outlet pipe 4 and the backwash device 5 are respectively arranged and are symmetrically arranged left and right. Thus, the aeration and filtration efficiency can be improved, and the sewage treatment speed can be increased.
Compared with the prior art, the aeration fine filtering device is provided with the second aeration plate 25 below the first aeration plate 24, so that the contact probability of sewage and air is further increased, the dissolved oxygen rate is improved, two sides of the bottom of the aeration barrel 21 are respectively provided with a branch pipe 26 communicated with the sewage, the end part of the branch pipe 26 is provided with an exhaust mechanism 27, the fan blades of the exhaust mechanism 27 are driven to rotate by natural force, air in the aeration barrel 21 and air generated by decomposing organic pollutants are discharged through the branch pipe 26, the air circulation in the aeration barrel 21 is enhanced, more air enters the aeration barrel 21 through the first aeration plate 24 and the second aeration plate 25 and is dissolved into anhydrous, and the decomposition rate of the organic pollutants is improved.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.