CN211367109U

CN211367109U - Biological aerated filter

Info

Publication number: CN211367109U
Application number: CN201921610905.5U
Authority: CN
Inventors: 池万青; 柳雪刚; 王志彬; 李正厚; 周睿; 池方建; 洪国庆; 李丽; 文四清; 楼斌; 汤浩
Original assignee: Zhejiang Lianchi Water Equipment Stock Co ltd
Current assignee: Zhejiang Lianchi Water Equipment Stock Co ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-08-28
Anticipated expiration: 2029-09-25

Abstract

The utility model discloses a biological aerated filter, which comprises a filter and a water purifying device; the water purifying device comprises a plate body arranged in the filter tank, the plate body is in sealing fit with the inner wall of the filter tank, and the filter tank is divided into a sewage area and a water purifying area; the filter material layer is arranged in the sewage area; the aeration filter rod is arranged on the plate body and is in sealing fit with the plate body; the gas source component can provide gas for the aeration filter head; the water purifying filter head is arranged on the plate body and is in sealing fit with the plate body, so that water in the sewage area can enter the water purifying area through the water purifying filter head; the utility model discloses a cooperation setting of air supply subassembly, aeration filter rod, filter material layer and water purification filter head has reduced area, and sewage treatment is more high-efficient, and sewage purification effect is better, and equipment overall structure is simple, and it is more easy to manufacture, and the cost is lower.

Description

Biological aerated filter

Technical Field

The utility model belongs to the technical field of sewage treatment, especially, relate to a biological aerated filter.

Background

In recent years, with the rapid development of social economy, the amount of pollutants discharged to water bodies is increased year by year, so that natural water bodies such as riverways, lakes, reservoirs and the like are polluted to different degrees, and the pollution control of the natural water bodies also becomes a great problem to be solved urgently; the aeration biological filter is one of important structures for repairing polluted natural water bodies, can effectively remove pollutants such as organic matters, ammonia nitrogen and the like in the natural water bodies, reduces the total amount of the pollutants and purifies the natural water bodies.

However, after the sewage in the existing aeration biological filter is subjected to aeration treatment, the sewage is discharged in the following two ways: firstly, water on the surface layer of the filter tank directly overflows through a water outlet; secondly, directly pumping the water on the upper layer by a water pump; both methods can cause the dirt floating on the surface layer of the sewage to flow out or be pumped away along with the water flow, so that the obtained water needs to be filtered again, and the method is very troublesome; and still can make the sewage in the filter tank have a state that flows to the sewage reduction department, lead to in the filter tank to adhere to the filler of microorganism and also gather along with the flow of sewage, cause some sewage to obtain effectual purification, the sewage treatment effect is poor.

Disclosure of Invention

The utility model provides a biological aerated filter with high sewage treatment efficiency and good effect, aiming at overcoming the defects of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an aeration biological filter, which comprises a filter and a water purifying device; the water purifying device comprises

The plate body is arranged in the filter tank and is in sealing fit with the inner wall of the filter tank, so that the filter tank is divided into a sewage area and a water purification area;

the filter material layer is arranged in the sewage area;

the aeration filter rod is arranged on the plate body and is in sealing fit with the plate body;

the gas source component can provide gas for the aeration filter head;

the water purifying filter head is arranged on the plate body and is in sealing fit with the plate body, so that water in the sewage area can enter the water purifying area through the water purifying filter head;

through the matching arrangement of the air source assembly, the aeration filter rod, the filter material layer and the water purification filter head, the sewage can be subjected to aeration purification treatment while the water subjected to aeration and purification is filtered and discharged, so that a filter tank does not need to be built for secondary filtration of the sewage, the equipment cost and the floor area are greatly reduced, and the sewage treatment is more efficient; meanwhile, the filter material cannot be locally accumulated, so that sewage in the filter tank can be effectively treated, the sewage purification effect is better, the whole structure of the equipment is simple, the production and the manufacture are easier, and the cost is lower.

Further, the distance between the upper end of the aeration filter rod and the upper surface of the plate body is H2, the distance between the upper end of the water purification filter head and the upper surface of the plate body is H1, and H1 is smaller than H2; through the setting of above-mentioned structure for the gas outlet on the aeration filter rod is higher than the water inlet on the water purification filter head, thereby makes from the aeration filter rod spun air current can not disturb near the filter material of water purification filter head, guarantees that the filter material can play filterable effect, makes from the water that the water purification filter head flows cleaner, need not secondary filter, convenient and fast.

Further, the air source assembly comprises an air inlet pipe and an air supply piece, wherein one end of the air inlet pipe is communicated with the water purification area, and the air supply piece is communicated with the other end of the air inlet pipe; through the arrangement of the structure, a high-pressure air cushion layer can be formed in the water purification area, so that air flow can be uniformly sprayed out of each aeration filter rod, and a better aeration effect is achieved.

Further, the distance between the lower end of the aeration filter rod and the lower surface of the plate body is h2, the distance between the lower end of the water purification filter head and the lower surface of the plate body is h1, and h1 is larger than h 2; through the arrangement of the structure, when normal aeration water purification is carried out, airflow only enters the sewage area from the lower end of the aeration filter rod for aeration, so that the sewage can be filtered to obtain purified water while aeration water purification is carried out; when the backwashing is needed, the air cushion layer in the water purification area is thickened only by increasing the amount of the air input into the water purification area, and the air is sprayed out of the aeration filter rod and the water purification filter head simultaneously, so that the backwashing purpose can be achieved.

Furthermore, an air cushion layer is formed in the water purification area.

Further, the filter material layer comprises a first filter material layer and a second filter material layer, and the thickness of the second filter material layer is greater than H1 and less than H2; through the setting of above-mentioned structure to make first filter bed of material can play the effect of taking out the organic matter in the sewage, and the second filter layer then can play the effect of the debris in the filtration sewage, dual filter effect, filtration efficiency is higher, and sewage purification effect is better.

Further, an aeration head cover is arranged on the aeration filter rod; through the setting of above-mentioned structure, avoid the filter material to get into aeration filter rod, prevent to block up, guarantee the steady operation of equipment.

Furthermore, the aeration head hood comprises a cover shell and aeration gaps which are uniformly distributed along the circumferential direction of the cover shell; through the arrangement of the structure, the air flow sprayed out of the aeration head cover is more uniform, the aeration effect is better, and the better sewage purification effect is achieved.

Furthermore, the housing is at least partially arranged in an arc structure, and through the arrangement of the structure, airflow is divergently sprayed all around, so that the radiation range is wider, and a better aeration effect is achieved.

Further, an aeration sealing gasket and a sealing boss matched with the aeration sealing gasket are also arranged on the aeration filter rod; through the setting of above-mentioned structure, guarantee that the aeration strains fixing on the plate body that the pole can be stable, leave sufficient interval between the gas outlet on the aeration strains the pole and the plate body, guarantee that the second strains the bed of material and can not be mixxed by the air current, can play better filter effect all the time.

To sum up, the utility model discloses a cooperation setting of air supply subassembly, aeration filter rod, filter material layer and water purification filter head has reduced area, and sewage treatment is more high-efficient, and sewage purification effect is better, and equipment overall structure is simple, and it is easier to manufacture, and the cost is lower.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic longitudinal perspective sectional view of the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

FIG. 4 is a schematic perspective view of the aeration filter head of the present invention;

FIG. 5 is a schematic perspective view of a water purification filter head according to the present invention;

FIG. 6 is a schematic cross-sectional view of the present invention;

fig. 7 is an enlarged schematic view at B in fig. 6.

Detailed Description

As shown in fig. 1-7, the biological aerated filter comprises a filter 1 and a water purifier, wherein the water purifier comprises a filter head plate 4, an air source assembly and a filter material layer 5; wherein, the filter head plate 4 comprises a plate body 41, an aeration filter head 42 and a water purification filter head 43; the plate body 41 is arranged in the filter tank 1, the plate body is hermetically connected with the tank wall of the filter tank, the filter tank 1 is divided into a sewage area 11 and a water purification area 12, a filter material layer 5 is laid on the plate body 41 and is positioned in the sewage area 11, the filter material layer is formed by filling and laying a plurality of fillers, microorganisms can grow on the fillers, namely, a hanging film is used for treating organic matters in sewage and realizing the purpose of purifying the sewage, the fillers in the application are ceramic particle filter materials, and in other embodiments, the fillers can also be filter materials of other materials and shapes; the plate body 41 is provided with a plurality of mounting holes 411, the aeration filter heads 42 and the water purification filter heads 43 are mounted on the plate body through the mounting holes, the plate body is uniformly provided with the aeration filter heads 42 and the water purification filter heads 43, and the aeration filter heads 42 and the water purification filter heads 43 are sequentially and mutually installed in a staggered manner.

Specifically, the air source assembly comprises an air supply part 35 and an air inlet pipe 36, one end of the air inlet pipe 36 is communicated with the water purification area 12, the pipe orifice is close to the lower surface of the plate body 41, the other end of the air inlet pipe extends out of the filter tank 1 and is communicated with the output end of the air supply part 35 arranged outside the filter tank, so that the pipe orifice of the air inlet pipe arranged outside the filter tank is higher than the tank wall of the filter tank, even if a one-way valve is not arranged at the pipe orifice of the air inlet pipe arranged in the water purification area, the sewage is not worried to be discharged in a reverse; the air supply member 35 is an air compressor or a blower commercially available in the market, and can provide sufficient amount of high pressure air, which is a prior art, and therefore, no detailed description is given here, and therefore, the drawings in the specification are not drawn in detail, and only a cube is drawn as an illustration, it should be noted that, in the drawings, the size of a part of the structure is particularly enlarged for clarity of representation, and is not an actual size in production application, and hereinafter, similar pumps or motors are also the same.

Specifically, the aeration filter head 42 comprises an aeration filter rod 421, an aeration head cover 422, an aeration sealing gasket 423 and an aeration fastener 424; the aeration filter rod 421 is provided in a hollow cylindrical structure, the aeration filter rod 421 is communicated with the aeration head cover 422, and the aeration filter rod 421 and the aeration head cover 422 are integrally formed, the aeration filter rod can pass through the mounting hole 411 on the plate body 41, and the aeration head cover cannot pass through the mounting hole; the end of the aeration filter rod close to the aeration head hood is provided with external threads, the aeration fastening piece is in a regular hexagon shape, a through hole for the aeration filter rod to pass through is formed in the aeration fastening piece, and internal threads are formed in the inner wall of the through hole, so that the aeration fastening piece and the aeration filter rod can be in threaded connection and matching; during installation, the aeration sealing gasket 423 is sleeved on the aeration filter rod, the aeration filter rod is inserted into the installation hole 411, then the aeration filter rod is sleeved with the aeration sealing gasket, finally, the aeration fastening piece and the aeration filter rod are screwed to complete installation and fixation of the aeration filter head, and meanwhile, the aeration filter head is in sealing fit with the plate body 41, so that gas and water can not pass through the installation hole provided with the aeration filter head.

Further, the aeration head cover 422 comprises a cover shell 4221 and a cover bottom 4222 connected with the cover shell, wherein the side surface of the cover shell is provided with an arc-shaped structure, the side surface of the cover shell is provided with a plurality of aeration gaps 4223, the aeration gaps are uniformly formed along the circumferential direction of the outer surface of the side surface of the cover shell, and the cover bottom 4222 is a closed plane; the air flow sprayed from the aeration gap is more uniform, and simultaneously can be sprayed to the periphery of the aeration head cover, so that the coverage area of the air is wider, the installation of the filter head is reduced, the cost is reduced, meanwhile, the retention time of the air in water is prolonged, the oxygen is more easily dissolved into the water, and the aeration effect is better; at least part of the surface of the cover bottom 4222 extends outwards to form a sealing boss 4225, the sealing boss is arranged, so that the aeration sealing gasket 423 can be better pressed on the plate body 41 to achieve a better sealing effect, and a gap can be reserved between the cover bottom 4222 and the plate body 41; in other embodiments, the sealing protrusion may be a protrusion extending from a portion of the outer surface of the aeration filter rod 421.

Specifically, the water purification filter head 43 comprises a water purification filter rod 431, a water purification hood 432, a water purification gasket 433 and a water purification fastener 434; the water purifying filter rod 431 is arranged in a hollow cylindrical structure, the water purifying filter rod 431 is communicated with the water purifying head cover 432, the water purifying filter rod and the water purifying head cover are integrally formed, the water purifying filter rod can pass through the mounting hole 411 on the plate body 41, and the water purifying head cover cannot pass through the mounting hole; the end of the water purification filter rod close to the water purification head cover is provided with an external thread, the water purification fastening piece 434 is in a regular hexagon shape, a through hole for the water purification filter rod to pass through is arranged on the water purification fastening piece, and the inner wall of the through hole is provided with an internal thread, so that the water purification fastening piece and the water purification filter rod can form threaded connection matching; during installation, cup joint water purification sealed pad 433 on the water purification filter rod, insert the water purification filter rod in the mounting hole 411 again, then cup joint a water purification sealed pad on the water purification filter rod again, at last can accomplish the installation of water purification filter head with water purification fastener and water purification filter rod spiro union again and fix, also formed sealed cooperation between water purification filter head and the plate body 41 simultaneously for gas and water all can't pass through from the mounting hole of installing the water purification filter head.

Furthermore, a plurality of water purifying ports 4321 are formed in the water purifying head cover 432, and the aperture of each water purifying port is small, so that sewage and filter materials are difficult to pass through, and treated sewage can pass through, thereby playing a role in filtering; the length of the water purifying filter rod 431 is longer than that of the aerating filter rod 421 in the water purifying area 12 (namely, the distance between the pipe orifice of the water purifying filter rod in the water purifying area and the plate body is h1, the distance between the pipe orifice of the aerating filter rod in the water purifying area and the plate body is h2, and h1 is longer than h 2); the distance between the upper end of the water purifying hood 432 and the plate body is H1, the distance between the lower end of the aeration hood 422 (namely the upper end of the aeration filter rod 421) and the plate body is H2, and H1 is smaller than H2, namely the aeration hood is higher than the water purifying hood, so that airflow sprayed out of the aeration hood cannot impact the filter material below the aeration hood but only impact the filter material around and above the aeration hood, so that the filter material around and above the aeration hood is loosened and floated, a biological membrane on the filter material can be in better contact with sewage, and the water purifying effect is better; the filter material below the aeration head cover is not affected and is still tightly paved on the plate body 41, so that impurities in the sewage can be filtered and intercepted, and only clean water can enter the water purification area through the water purification filter head; the filter material layer around and above the aeration head cover is called as a first filter material layer 51, and the filter material layer below the aeration head cover is called as a second filter material layer 52; the thickness of the second filter material layer 52 is greater than H1 and less than H2.

The operation steps and the principle are as follows: preparing in advance, sewage enters the sewage area 11 through the water inlet pipe 13 above the filter tank 1, and then enters the water purification area 12 through the aeration filter head 42 and the water purification filter head 43, and after the sewage in the water purification area submerges the pipe orifice below the aeration filter rod 421, the sewage in the water purification area does not increase any more, but forms an air cushion layer 40 in the water purification area; along with sewage continues to be inputed, the water level in the sewage district can be higher and higher, waits to reach and predetermines the water level after, can carry out aeration work.

Specifically, the air supply member 35 is started to make air enter the water purification area 12 through the air inlet pipe 36, the air entering the water purification area is converged into the air cushion layer 40, so that the thickness of the air cushion layer is increased, the pipe orifice below the aeration filter rod 421 is positioned in the air cushion layer, the air in the air cushion layer enters the sewage area through the aeration filter rod, the filter material in the first filter material layer 51 in the sewage area can be flushed while the sewage in the sewage area is aerated, so that the contact between the biological film on the filter material and the sewage is more sufficient, the organic matters in the sewage can be better decomposed, the better water purification effect is achieved, meanwhile, as the aeration filter heads are uniformly distributed on the plate body 41, the aeration is more uniform, even if the filter material moves in the sewage area under the impact of air flow, the condition that the local accumulation of the filter material does not occur, and the filter material is uniformly distributed in the sewage area, the water purifying effect is better; and after the sewage after being treated further filters the debris in aquatic through second filtering material layer 52, the water purification that obtains gets into in the water purification district through water purification filter head 43 and is collected, discharges through outlet pipe 14 that is linked together with the water purification district at last for need not to install a filtering pond in addition and filter sewage, reduced the manufacturing cost and the area of equipment, and to the processing of sewage simple high efficiency.

After a period of sewage treatment, when more impurities in the sewage zone need to be cleaned, stopping conveying sewage into the filter tank, increasing the power of the air supply piece 35 (or additionally arranging a group of air inlet assemblies, only increasing the air input), and greatly increasing the air quantity input into the water purification zone 12, so that the thickness of the air cushion layer 40 is increased, until the pipe orifice at the lower end of the water purification filter rod 431 is communicated with the air cushion layer, air enters the sewage zone through the water purification filter rod, so that the filter materials in the first filter material layer 51 and the second filter material layer 52 in the sewage zone can be filled by the air, and the filter materials collide and rub with each other, thereby realizing the back washing of the filter materials; at the moment, a water suction pump 15 arranged outside the filter tank 1 is opened, sewage in a sewage area is pumped out together with sundries washed, water is supplemented into the filter tank through a water pipe 16, the water level in the filter tank is kept, backwashing is finished after a period of time, and the sewage purification effect of the filter tank can be recovered again; the additional installation of a back washing component is not needed, the equipment cost is lower, the occupied space is smaller, and the device is more practical.

It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

Claims

1. An aeration biological filter, which comprises a filter (1) and a water purifying device; the method is characterized in that:

the water purifying device comprises

A plate body (41) arranged in the filter tank (1), wherein the plate body is in sealing fit with the inner wall of the filter tank to divide the filter tank (1) into a sewage area (11) and a water purification area (12);

the filter material layer (5) is arranged in the sewage area (11);

the aeration filter rod (421) is arranged on the plate body (41), and is in sealing fit with the plate body;

the gas source component can provide gas for the aeration filter rod (421);

the water purification filter head (43) is arranged on the plate body (41), the water purification filter head is in sealing fit with the plate body, and water in the sewage area (11) can enter the water purification area (12) through the water purification filter head (43).

2. A biological aerated filter according to claim 1, wherein: the distance between the upper end of the aeration filter rod (421) and the upper surface of the plate body (41) is H2, the distance between the upper end of the water purification filter head (43) and the upper surface of the plate body (41) is H1, and H1 is smaller than H2.

3. A biological aerated filter according to claim 2, wherein: the air source assembly comprises an air inlet pipe (36) and an air supply piece (35), wherein one end of the air inlet pipe (36) is communicated with the water purification area (12), and the air supply piece is communicated with the other end of the air inlet pipe (36).

4. A biological aerated filter according to claim 3, wherein: the distance between the lower end of the aeration filter rod (421) and the lower surface of the plate body (41) is h2, the distance between the lower end of the water purification filter head (43) and the lower surface of the plate body (41) is h1, and h1 is larger than h 2.

5. A biological aerated filter according to claim 4, wherein: an air cushion layer (40) is formed in the water purifying area (12).

6. A biological aerated filter according to claim 2, wherein: the filter material layer (5) comprises a first filter material layer (51) and a second filter material layer (52), and the thickness of the second filter material layer (52) is larger than H1 and smaller than H2.

7. A biological aerated filter according to any one of claims 1 to 5, wherein: an aeration head cover (422) is arranged on the aeration filter rod (421).

8. A biological aerated filter according to claim 7, wherein: the aeration head cover (422) comprises a cover shell (4221) and aeration gaps (4223) uniformly distributed along the circumferential direction of the cover shell (4221).

9. A biological aerated filter according to claim 8, wherein: the housing (4221) is at least partially arranged in an arc structure.

10. A biological aerated filter according to claim 8, wherein: the aeration filter rod (421) is also provided with an aeration sealing gasket (423) and a sealing boss (4225) matched with the aeration sealing gasket (423).