CN218860450U

CN218860450U - Airlift anaerobic reactor

Info

Publication number: CN218860450U
Application number: CN202220242102.4U
Authority: CN
Inventors: 张广学; 潘海燕
Original assignee: Ouji Shanghai Environmental Protection Technology Co ltd
Current assignee: Ouji Shanghai Environmental Protection Technology Co ltd
Priority date: 2022-01-29
Filing date: 2022-01-29
Publication date: 2023-04-14
Anticipated expiration: 2032-01-29

Abstract

The utility model discloses an airlift anaerobic reactor, which belongs to the technical field of sewage treatment and comprises a tank body and a top cover, wherein a biogas communicating pipe is outwards arranged on the top cover, and a biogas input pipe is arranged inside the tank body; the methane communicating pipe is sequentially connected with a methane output pipe and an explosion-proof fan, the explosion-proof fan is connected with a methane input pipe, and the methane input pipe is connected with aeration equipment at the bottom of the tank body; the side wall of the tank body is connected with a water inlet pipe, anaerobic sludge is filled in the tank body, sewage entering from the water inlet pipe is mixed with the anaerobic sludge to generate methane, and the methane upwards enters an air chamber on the lower side of the top cover and enters a methane communicating pipe; the tank body is internally provided with a mud-water separation device, the mud-water separation device is internally provided with an air release region and a mud-water separation region, the mud-water mixed liquid containing the methane releases the methane through the air release region, and then the upper layer clear water and the lower layer sludge are separated through the mud-water separation region, and the clear water is discharged out of the tank body. The utility model discloses can break away from the problem that three-phase separator received the restriction of narrow slit velocity of flow among the traditional anaerobic reactor, promote throughput and treatment effeciency.

Description

Airlift anaerobic reactor

Technical Field

The utility model relates to a sewage treatment technical field especially relates to an airlift anaerobic reactor.

Background

Most of the existing anaerobic reactors, whether the second generation anaerobic reactor represented by UASB or the third generation anaerobic reactor represented by IC, adopt a special three-phase separator with a gas collection function and a water distributor for uniform water distribution to perform three-phase separation of mixed liquid. The two types of anaerobic reactors have a common defect that the rising flow velocity cannot be infinitely large due to the restriction of the narrow slit flow velocity of the three-phase separator, otherwise the sludge running phenomenon of the anaerobic reactor is easily caused.

Therefore, since the upward flow velocity of the reactor is limited by the narrow slit flow velocity of the three-phase separator, the expansion height of the sludge bed is limited, and the anaerobic reactor cannot be completely mixed from the bottom to the top, and further, the treatment capacity and the treatment efficiency of the reactor are inevitably limited.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides an airlift anaerobic reactor to further promote current anaerobic reactor's throughput and treatment efficiency, promote anaerobic reactor's mud granulation process simultaneously.

The utility model discloses an airlift anaerobic reactor, include: a tank body and a top cover;

a biogas communicating pipe is outwards arranged on the top cover, and a biogas input pipe is arranged inside the tank body; the methane communicating pipe is sequentially connected with a methane output pipe and an explosion-proof fan, the explosion-proof fan is connected with the methane input pipe, and the methane input pipe is connected with the plurality of aeration devices at the bottom of the tank body;

the side wall of the tank body is connected with a water inlet pipe, anaerobic sludge is filled in the tank body, sewage entering from the water inlet pipe is mixed with the anaerobic sludge to generate biogas, and the biogas moves upwards to enter an air chamber on the lower side of the top cover and then enters the biogas communicating pipe;

the sludge-water separation device is arranged in the tank body, the sludge-water separation device is provided with an air release area and a sludge-water separation area, sludge-water mixed liquid containing methane releases methane through the air release area and then enters the sludge-water separation area to separate upper-layer clean water and lower-layer sludge, the methane enters the air chamber, the sludge is extracted to the tank body outside the sludge-water separation device to be recycled, and the clean water is discharged out of the tank body.

As a further improvement of the utility model, the mud-water separation device comprises an outer box body, a guide plate and a mud-water separation funnel are arranged in the outer box body, and an inclined pipe or an inclined plate is arranged in the mud-water separation funnel;

one side plate of the outer box body is set to be a short plate, a channel between the short plate and the guide plate forms an air release area, and the area where the mud-water separation funnel is located is a mud-water separation area.

As a further improvement of the utility model, the muddy water that contains marsh gas mixes the liquid and passes through the short slab upper end gets into the short slab with passageway between the guide plate releases marsh gas, and surplus muddy water mixes the liquid and gets into the mud-water separation funnel, by the below of pipe chute or swash plate rises jointly and gets into pipe chute or swash plate, under the action of gravity, mud slides and separates with water along the pipe chute, obtains upper clear water and lower floor's mud.

As a further improvement of the utility model, the mud-water separation funnel also comprises a mud bucket, and the lower end of the mud bucket is provided with a mud hole;

the sludge slides downwards to the sludge hopper along the inclined tube and slides to the lower part of the mud-water separation funnel from the sludge port.

As a further improvement of the utility model, it is a plurality of aeration equipment in jar body bottom evenly distributed is located mud-water separation funnel below aeration equipment upwards releases marsh gas, with the mud collision of the downward landing of mud mouth, marsh gas stirs mud avoids mud to deposit in jar body bottom, simultaneously the skew vertical direction of marsh gas does not get into mud-water separation funnel does not influence pipe chute or swash plate department mud-water separation.

As a further improvement, the mud-water separation funnel outside among the mud-water separation device with constitute peripheral region between the opposite side board of outer box, be equipped with the air stripping device in the peripheral region, mud mouth that falls by the air stripping device extracts in the jar body in the mud-water separation device outside, continues to carry out the anaerobism and produces natural pond reaction.

As a further improvement, the outlet pipe is installed above the inclined pipe, the clear water warp the outlet pipe flows out the jar body, guarantees the jar body continuously carries out sewage treatment.

As a further improvement, the tank body is internally provided with a sampling tube, and the sampling tube is provided with liquid taking ports with different heights.

As a further improvement, the mud hole downside of mud-water separation funnel is equipped with the sludge discharge pipe among the mud-water separation device, the sludge discharge pipe is with the mud discharge jar body.

As a further improvement of the utility model, the top cover is connected with a methane using pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a design has the mud-water separation device of gassing function, and the three-phase separator who has broken away from traditional anaerobic reactor receives the restriction of the slot velocity of flow and the difficult problem of water distribution, has promoted anaerobic reactor throughput and treatment effeciency, has promoted the efficiency of anaerobism marsh.

The utility model discloses no longer use the water-locator, can be directly with the internal reaction zone of sewage input jar, realize the intensive stirring of anaerobism mud and sewage through aeration equipment, make whole anaerobic reactor follow supreme down, all be in complete mixing state, consequently whole reactor follows supreme efficient reaction zone down, can promote traditional anaerobic reactor's throughput, also can promote traditional anaerobic reactor's treatment effeciency.

The utility model discloses collect the marsh gas that the reaction zone produced and input explosion-proof wind gas, input the internal aeration equipment of jar after explosion-proof fan compression pressurization, marsh gas is collected once more after the aeration, and then realizes the cyclic utilization of producing marsh gas certainly.

The utility model discloses still set up the air stripping device in the mud-water separation funnel outside, extract the sludge of mud mouth falling to the reaction zone in the mud-water separation device outside, realize anaerobic sludge's complete utilization.

The utility model discloses an air-lift anaerobic reactor realizes the control of the internal sewage treatment rate of jar through the business turn over water yield of control inlet tube and outlet pipe.

The utility model discloses set up the sludge discharge pipe, according to the mud demand volume in the reaction zone of anaerobism marsh gas production, extract partial mud and carry out cyclic utilization, unnecessary mud is discharged through the sludge discharge pipe.

Drawings

FIG. 1 is a schematic structural view of a lift-type anaerobic reactor according to an embodiment of the present invention;

fig. 2 is a left side view of a can body according to an embodiment of the present invention;

fig. 3 is a top view of a tank according to an embodiment of the present invention.

In the figure:

1. a water outlet pipe; 2. an outer case; 3. an inclined tube; 4. a mud bucket; 5. a mud hole; 6. a gas stripping device; 7. a marsh gas communicating pipe; 8. a biogas output pipe; 9. an explosion-proof fan; 10. a biogas input pipe; 11. an aeration device; 12. a sampling tube; 13. a tank body; 14. a top cover; 15. a biogas use pipe; 16. a manhole; 17. a sludge discharge pipe; 18. a water inlet pipe; 19. a baffle; 20. a short plate; 21. a middle short plate;

a1, an outgassing zone; a2, a mud-water separation zone; a3, peripheral area.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1-3, the utility model provides an airlift anaerobic reactor, which comprises: the tank body 13 is hermetically connected with the top cover 14 to prevent internal gas from overflowing, and a gas chamber is formed between the water surface in the tank body 13 and the top cover 14;

a water inlet pipe 18 is connected to the side wall of the tank body 13, anaerobic sludge is filled in the tank body 13, sewage entering from the water inlet pipe 18 is mixed with the anaerobic sludge to generate biogas, and the biogas moves upwards to enter an air chamber on the lower side of the top cover 14;

a plurality of methane communicating pipes 7 are arranged outwards on the top cover 14, and a methane input pipe 10 is arranged inside the tank body 13; the biogas in the gas chamber randomly enters any biogas communicating pipe 7, all the biogas communicating pipes 7 are connected with a biogas output pipe 8, the biogas output pipe 8 is connected with an explosion-proof fan 9, the explosion-proof fan 9 is connected with a biogas input pipe 10, the biogas input pipe 10 is connected with a plurality of aeration devices 11 uniformly distributed at the bottom of a tank body 13, the biogas enters the biogas output pipe 8 along the biogas communicating pipe 7 and reaches the explosion-proof fan 9, the biogas is compressed and pressurized by the explosion-proof fan 9 and then is input to the aeration devices 11 along the biogas input pipe 10, the aeration devices 11 introduce the biogas into the tank body 13 from the lower part of the tank body 13, the biogas rises in a sludge-water mixed liquid in the tank body 13 to fully mix anaerobic sludge and sewage, organic matters in the anaerobic sludge are decomposed by anaerobic microorganisms to generate biogas, the biogas released by the aeration devices and the generated biogas return to the gas chamber together, and self-circulation of the biogas is realized;

as shown in fig. 3, a mud-water separating device is arranged in the tank 13, and the mud-water separating device includes an outer box 2, the inner part of the outer box 2 is divided into a left part and a right part, one part is a mud-water separating funnel, and the other part is a peripheral area A3; as shown in fig. 2, a guide plate 19 is arranged at the front side of the mud-water separation funnel, and an inclined pipe 3 or an inclined plate is arranged in the mud-water separation funnel; a mud bucket 4 is arranged below the inclined pipe 3 or the inclined plate, and the lower end of the mud bucket 4 is connected with a mud port 5; one side plate of the outer box body 2 is arranged to be a short plate 20, a channel between the short plate 20 and the guide plate 19 forms an air release area A1, and the area of the mud-water separation funnel is a mud-water separation area A2.

The sludge-water mixed liquid containing the methane enters a channel between the short plate 20 and the guide plate 19 through the upper end of the short plate 20, methane bubbles are influenced by buoyancy when moving downwards along with the sludge-water mixed liquid in the channel, and inevitably perform deceleration operation until the methane bubbles start to float upwards after stopping moving downwards, and gradually separate from the sludge-water mixed liquid, and finally escape from the liquid level to reach the air chamber, so that the process can prevent the methane mixed with the sludge-water mixed liquid from entering the inclined tube 3 together, sludge floating is easy to cause, and the sludge-water separation of the subsequent inclined tube 3 is not facilitated;

the residual sludge-water mixed liquid enters the lower part of the inclined pipe 3 or the inclined plate in the sludge-water separation funnel under the action of the guide plate 19, and because a liquid level difference exists between the inside and the outside of the sludge-water separation funnel, the sludge-water mixed liquid jointly rises in the sludge-water separation funnel to enter the inclined pipe 3 or the inclined plate, wherein the sludge upwards performs deceleration motion under the action of gravity until being separated from water, and then slides into the mud bucket 4 under the action of the inclined pipe 3 or the inclined plate to be collected, so that clear water is obtained on the upper layer of the inclined pipe 3 or the inclined plate, sludge is obtained on the lower layer, the water outlet pipe 1 is installed above the inclined pipe 3, the clear water flows out of the tank body 13 through the water outlet pipe 1, and the tank body 13 is ensured to continuously perform sewage treatment.

Along with the increase of sludge in the mud bucket 4, the sludge slides downwards out of the mud port 5 under the action of gravity, at the moment, the aeration device positioned below the mud-water separation funnel releases methane upwards to collide with the sludge sliding downwards from the mud port 5, the methane stirs the sludge to prevent the sludge from precipitating at the bottom of the tank body 13, and meanwhile, the methane is forced to deviate from the vertical direction and does not enter the mud-water separation funnel, but only can be isolated in the peripheral area A3, so that the inclined pipe 3 or the inclined plate can realize mud-water separation without interference of bubbles, the separated sludge can unpowered and totally flow back to an anaerobic methane-generating reaction area at the bottom of the mud-water separation funnel, the sludge is continuously mixed with sewage to carry out biological metabolism, methane is generated, and rises along with the increase of water quantity of the peripheral area A3, and enters the gas release area A1 and the mud-water separation area A2 again through the middle short plate 21 between the peripheral area A3 and the gas release area A1, and the circulating reciprocation.

Besides entering the gas release area A1 and the mud-water separation area A2 again through the unpowered self-circulation rising of the sludge, the peripheral area A3 can be provided with the gas stripping device 6, when the sludge amount generated below the mud-water separation funnel is large, the gas stripping device 6 extracts the sludge into the tank body 13 outside the mud-water separation device for recycling, and the anaerobic methane-generating reaction is continuously carried out.

Further, the utility model discloses well jar is equipped with sampling tube 12 in the body 13, and sampling tube 12 is equipped with the not liquid mouth of getting of co-altitude, guarantees the reliability of the sample that sampling tube 12 took out.

Furthermore, a sludge discharge pipe 17 is arranged at the lower side of the sludge opening 5 of the sludge-water separation funnel in the sludge-water separation device, and the sludge is discharged out of the tank body 13 through the sludge discharge pipe 17.

Furthermore, a biogas use pipe 15 is connected to the top cover 14, and excess biogas from the biogas circulation system is provided for users.

Further, a manhole 16 is arranged on the outer side of the tank body 13 and is used for overhauling and observing the sampling tube 12 when the anaerobic reactor fails.

The embodiment is as follows:

the utility model discloses an application:

sewage enters the anaerobic reactor through the water inlet pipe 18, methane is generated in the anaerobic reactor, bubbles of the methane move upwards under the action of buoyancy to reach the gas chamber below the top cover 14 and are sealed and collected by the top cover 14;

biogas enters a biogas output pipe 8 along a biogas communicating pipe 7 arranged in a top cover 14, enters an explosion-proof fan 9 along the biogas output pipe 8, is compressed and pressurized by the explosion-proof fan 9, returns to the anaerobic reactor through a biogas input pipe 10, and is input into a plurality of aeration devices 11 at the bottom of a tank body 13;

the sewage and anaerobic sludge in the tank body 13 are fully mixed by the methane released by the aeration equipment 11 to generate methane, and the methane and the generated methane enter the top gas chamber under the action of buoyancy, so that methane self-circulation is formed.

Sludge-water mixed liquid containing methane outside the sludge-water separation device releases methane through a gas release area A1 between a short plate 20 and a guide plate 19, the methane rises to the position of a gas chamber, the sludge-water mixed liquid enters the lower part of an inclined pipe 3 of a sludge-water separation funnel and moves towards the upper part of the inclined pipe 3 along with the increase of water volume, the sludge is decelerated under the action of gravity in the rising process, the sludge is separated from the water at the inclined pipe 3 and slides downwards to a sludge hopper 4 along the inclined pipe 3, the sludge in the sludge hopper 4 is increased and falls along a sludge opening 5, clear water is obtained above the inclined pipe 3, and the clear water is discharged out of a tank body 13 through a water outlet pipe 1.

The sludge collides with the methane released by the bottom aeration device in the falling process to mix the sludge and the water again, and simultaneously the methane deviates from the upward movement direction and moves to the peripheral area A3 and finally rises to the gas chamber, so that the sludge and the sewage below the mud-water separation funnel are fully mixed to generate the methane in the process, and the sludge is prevented from being precipitated;

along with the increase of the weight of the peripheral area A3 and the rise of the liquid level, the sludge and sewage mixed liquid below the sludge-water separation funnel enters the air release area A1 and the sludge-water separation area A2 again through the middle short plate 21 and enters the self-circulation in cycles.

When the sludge below the separating funnel is excessive, the sludge is extracted into the tank body 13 outside the mud-water separating device through the gas stripping device 6, and the anaerobic biogas generating reaction is continuously carried out.

The utility model has the advantages that:

the utility model discloses a design has the mud-water separation device of gassing function, and the three-phase separator who has broken away from traditional anaerobic reactor receives the restriction of slot velocity of flow and the difficult problem of water distribution, has promoted anaerobic reactor throughput and treatment effeciency, has promoted the efficiency of anaerobism marsh gas production.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An airlift anaerobic reactor, comprising: a tank body and a top cover;

a biogas communicating pipe is outwards arranged on the top cover, and a biogas input pipe is arranged inside the tank body; the methane communicating pipe is sequentially connected with a methane output pipe and an explosion-proof fan, the explosion-proof fan is connected with the methane input pipe, and the methane input pipe is connected with a plurality of aeration devices at the bottom of the tank body;

2. An airlift anaerobic reactor according to claim 1, wherein: the mud-water separation device comprises an outer box body, a guide plate and a mud-water separation funnel are arranged in the outer box body, and an inclined pipe or an inclined plate is arranged in the mud-water separation funnel;

3. An airlift anaerobic reactor according to claim 2, wherein:

and sludge-water mixed liquid containing methane enters a channel between the short plate and the guide plate through the upper end of the short plate to release methane, the residual sludge-water mixed liquid enters the sludge-water separation funnel, the residual sludge-water mixed liquid jointly rises from the lower part of the inclined pipe or the inclined plate and enters the inclined pipe or the inclined plate, and under the action of gravity, the sludge slides downwards along the inclined pipe and is separated from water to obtain upper clear water and lower sludge.

4. An airlift anaerobic reactor according to claim 3, wherein: the mud-water separation funnel also comprises a mud bucket, and the lower end of the mud bucket is provided with a mud hole;

5. An airlift anaerobic reactor according to claim 4, wherein: the plurality of aeration devices are uniformly distributed at the bottom of the tank body, the aeration devices positioned below the mud-water separation funnel upwards release methane, the methane collides with sludge sliding downwards from the sludge port, the sludge is stirred by the methane to avoid the sludge from precipitating at the bottom of the tank body, and meanwhile, the methane deviates from the vertical direction and does not enter the mud-water separation funnel, so that the mud-water separation at the inclined pipe or the inclined plate is not influenced.

6. An airlift anaerobic reactor according to claim 4, wherein: and a peripheral area is formed between the outer side of a mud-water separation funnel in the mud-water separation device and the other side plate of the outer box body, an air stripping device is arranged in the peripheral area, and sludge falling from a sludge port is extracted into a tank body on the outer side of the mud-water separation device by the air stripping device to continue anaerobic biogas production reaction.

7. An airlift anaerobic reactor according to claim 2, wherein: and a water outlet pipe is arranged above the inclined pipe, and the clear water flows out of the tank body through the water outlet pipe, so that the tank body is ensured to continuously perform sewage treatment.

8. An airlift anaerobic reactor according to claim 7, wherein: the internal sampling tube that is equipped with of jar, the sampling tube is equipped with the not liquid mouth of getting of co-altitude.

9. An airlift anaerobic reactor according to claim 2, wherein: mud pipe is equipped with to mud water separating funnel's mud mouth downside among the mud-water separation device, the mud pipe is with mud discharge jar body.

10. An airlift anaerobic reactor according to claim 1, wherein: the top cover is connected with a methane using pipe.