CN217202226U

CN217202226U - Biochemical reaction device with natural oxygenation function

Info

Publication number: CN217202226U
Application number: CN202220016292.8U
Authority: CN
Inventors: 韩康; 宋劲强; 黄胜; 董俊; 张岚欣; 覃将伟; 邹杨; 王威; 陶威
Original assignee: Junji Environmental Technology Co ltd
Current assignee: Junji Environmental Technology Co ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-08-16
Anticipated expiration: 2032-01-05

Abstract

A biochemical reaction device for natural oxygenation belongs to the technical field of water treatment, and comprises: the tank body, the water distribution system and the natural oxygenation system; the water distribution system is arranged at the upper end of the tank body and comprises a water inlet main pipe and a plurality of water distribution branch pipes, and one end of the water inlet main pipe extends into the upper end of the tank body and is connected with the plurality of water distribution branch pipes; the natural oxygenation system comprises a plurality of water spraying fillers and air holes, the water spraying fillers which are arranged in the tank body in a layered mode are located below the water distribution branch pipes, the tank body wall is provided with a plurality of air holes and located below the water spraying fillers, and the lower end of the tank body is provided with a water outlet pipe and located below the air holes. The device utilizes the self gravitational potential energy of the water body to achieve the purpose of natural oxygenation, and compared with the traditional biochemical process, the device reduces the energy consumption and investment required by mechanical oxygenation, improves the reaction efficiency and shortens the hydraulic retention time.

Description

Biochemical reaction device with natural oxygenation function

Technical Field

The utility model relates to the technical field of water treatment, in particular to a biochemical reaction device with natural oxygenation.

Background

The concept of biochemical treatment is proposed as opposed to ecological treatment. Biochemical processes generally include two important elements: 1. oxygen is supplied to the water by a large amount of aeration to support the survival of the microorganisms. 2. The microorganisms are used for decomposing organic matters in the sewage, thereby purifying the sewage. The biochemical treatment is the core of most of the traditional sewage treatment processes, and most of municipal sewage treatment plants in China adopt the biochemical treatment technology to treat domestic sewage of urban residents.

At present, the biochemical process mainly comprises A ² 0 process, SBR process, oxidation ditch, MBR process, oxidation pond and the like, and the process is applied to various sewage treatments, and according to the current operation condition, the aeration of the process mainly depends on mechanical aeration, including matched aeration pipelines, pipe fittings, fans, matched soil building structures such as fan rooms and power distribution rooms, and has the advantages of high equipment energy consumption, large matched process investment and difficult later-period operation and maintenance.

Therefore, it is necessary to design a biochemical reaction apparatus with natural oxygenation to overcome the above problems.

SUMMERY OF THE UTILITY MODEL

In order to avoid the problems, the biochemical reaction device for natural oxygenation is provided, the purpose of natural oxygenation is achieved by utilizing the self gravitational potential energy of the water body, and compared with the traditional biochemical process, the biochemical reaction device for natural oxygenation reduces energy consumption and investment required by mechanical oxygenation, improves reaction efficiency and shortens hydraulic retention time.

The utility model provides a pair of biochemical reaction device of natural oxygenation, include: the tank body, the water distribution system and the natural oxygenation system; the water distribution system is arranged at the upper end of the tank body and comprises a water inlet main pipe and a plurality of water distribution branch pipes, and one end of the water inlet main pipe extends into the upper end of the tank body and is connected with the plurality of water distribution branch pipes; the natural oxygenation system comprises a plurality of water spraying fillers and air holes, the water spraying fillers which are arranged in the tank body in a layered mode are located below the water distribution branch pipes, the tank body wall is provided with a plurality of air holes and located below the water spraying fillers, and the lower end of the tank body is provided with a water outlet pipe and located below the air holes.

Preferably, the water distribution system further comprises a water distribution plate, the water distribution plate is arranged below the water distribution branch pipe and above the natural oxygenation system, and a plurality of water distribution holes are formed in the water distribution plate.

Preferably, each layer of the water spraying filler is provided with a plurality of water spraying fillers, and the water spraying fillers are arranged in a staggered mode between each layer.

Preferably, the water spraying filler is in a triangular prism structure.

Preferably, the water spraying filler is in an inverted triangular prism structure.

Preferably, the inner wall of the tank body is annularly provided with a water collecting plate and is positioned between the water spraying filler and the air holes.

Preferably, the water collecting plate forms an angle of 30-60 degrees with the wall of the tank body.

Preferably, the bottom of the tank body is provided with a sludge return system which comprises a sludge return pump and a sludge return pipeline and is used for pumping biochemical sludge in the return tank body.

The device of the utility model uses sewage as raw water, and the raw water is evenly splashed to the trickle filler through the water distribution system. The splashed water drops are contacted with a natural oxygenation system and then splashed into fine water drops or water films, so that the contact area of the sewage and the air is increased, the contact time is prolonged, the good mass transfer exchange effect of the air and the sewage is ensured, and microorganisms are attached to the surface of the sewage to form a biological film. In the process that sewage flows through the surface of the carrier, the biological membrane decomposes pollutants through the adsorption of organic nutrients, the diffusion inside the biological membrane, biological oxidation generated in the membrane and the like. The treated water is collected in the water outlet collection system through the water collecting plate, part of the treated water flows back to the front end biochemical system, the stability of the sludge concentration of the whole biochemical system is maintained, and part of the treated water reaches the standard and is discharged.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the device changes the prior structural form through efficient and reasonable combined construction, thereby saving civil engineering investment and land occupation.

2. The device is provided with a plurality of groups of water spraying and filling devices in the natural oxygenation system, and an anoxic zone, a facultative zone and an aerobic zone are formed spontaneously through the contact time change of sewage and air in the treatment process, so that the biochemical treatment effect on raw water is achieved. Compared with the traditional biochemical process, the process does not need to be provided with an anoxic tank and an aerobic tank independently, so that the process route is simpler and more efficient; the equipment investment is less; the system operation control is simple.

3. The water drops splashed by the water distribution system of the device are contacted with the natural oxygenation system and then splashed into fine water drops or water films, so that the contact area of sewage and air is increased, the contact time is prolonged, and the good mass transfer and exchange action of the air and the sewage is ensured; compared with the traditional biochemical process, the method reduces the energy consumption required by mechanical oxygenation, and is matched with the characteristics that the concentration of microorganisms in the biomembrane method reactor is high, and the amount of microorganisms in a unit volume reactor can be 5-20 times as high as that of microorganisms in an activated sludge method, so that the reaction efficiency is greatly improved, and the hydraulic retention time is shortened.

Drawings

FIG. 1 is a schematic structural view of a biochemical reaction apparatus for natural oxygenation according to a preferred embodiment of the present invention;

fig. 2 is a top view of a water distribution system according to a preferred embodiment of the present invention;

the reference numbers illustrate:

1. a tank body, 11 and a water outlet pipe,

2. a water distribution system 21, a water inlet header pipe 22, water distribution branch pipes 23, water distribution plates 24 and water distribution holes,

3. a natural oxygenation system 31, a water spraying filler 32, air holes 33 and a water collecting plate,

4. a sludge return system.

Detailed Description

The technical solution of the present invention will be clearly and completely described with reference to the accompanying drawings. 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 is to be noted that, unless otherwise explicitly specified 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 as a specific case by those skilled in the art.

As shown in fig. 1 to 2, the present embodiment provides a biochemical reaction apparatus with natural oxygenation, including: a tank body 1, a water distribution system 2 and a natural oxygenation system 3.

The tank body 1 is a cylinder, the height is preferably two to three times larger than the diameter, the structure is preferably a steel structure, the structural characteristics are favorable for increasing the rigidity and the stability of the tank body 1, and the tank body has higher economic benefit and saves the occupied area.

As shown in fig. 1 and 2, the water distribution system 2 is disposed at the upper end of the tank 1, and includes a water inlet header 21, water distribution branches 22, and a water distribution plate 23. One end of a water inlet main pipe 21 extends into the upper end of the tank body 1 and is connected with a plurality of water distribution branch pipes 22, and the plurality of water distribution branch pipes 22 are uniformly distributed in a non-font manner; the water distribution plate 23 is arranged below the water distribution branch pipe 22 and above the natural oxygenation system 3, a plurality of water distribution holes 24 are arranged on the water distribution plate 23, the hole diameter is preferably DN25mm, and the hole distance is 300mm-400 mm.

As shown in figure 1, the natural oxygenation system 3 comprises a plurality of water spraying fillers 31 and air vents 32, the water spraying fillers 31 are arranged in the tank body 1 in a layered mode and are located below the water distribution branch pipes 22, the wall of the tank body 1 is provided with a plurality of air vents 32 and are located below the water spraying fillers 31, the air vents 32 are rectangular, the length of the air vents 32 is preferably 1.5m, the width of the air vents is 0.4m, and the center distance between the two air vents is preferably 0.8 m. The lower end of the tank body 1 is provided with a water outlet pipe 11 which is arranged below the air holes 32. Each layer of the water spraying filler 31 is provided with a plurality of water spraying fillers 31, the layers are arranged in a staggered mode, and the water spraying fillers 31 are of inverted triangular prism structures.

The water drops splashed by the water distribution system 2 are contacted with the water spraying filler 31 and then splashed into fine water drops or water films, so that the contact area of the sewage and the air is increased, the contact time is prolonged, and the good mass transfer and exchange action of the air and the sewage is ensured. And along with the long-time contact with sewage of trickle filler 31, the surface can form a layer of biomembrane, sewage and biomembrane get the contact exchange of sufficient mixing and permeating, biomembrane can not only uniform bed on every trickle filler 31, keep good activity, and can obtain bigger and bigger specific surface area in the course of operation, can carry on good metabolism. In brief, the trickle filler 31 can achieve the purpose of natural oxygenation, and also has the effects of facilitating film formation, retaining microorganisms and facilitating full contact reaction of sewage and sludge, and preferably, the volume of the trickle filler 31 is 1/3-1/4 which preferably accounts for the total volume of the device.

Meanwhile, the water collecting plate 33 is annularly arranged on the inner wall of the tank body 1 and is positioned between the water spraying filler 31 and the air holes 32, the included angle between the water collecting plate 33 and the wall of the tank body 1 is 30 degrees, and the width of the water collecting plate 33 is preferably 1.5-1.8 meters.

And a sludge return system 4 is arranged at the bottom of the tank body 1 and comprises a sludge return pump and a sludge return pipeline for pumping biochemical sludge in the return tank body 1. Part of biochemical sludge is refluxed to a biochemical unit at the front end of the system, the sludge concentration of the whole biochemical unit is maintained, the reflux flow is determined according to 100% -300% of the inflow water, the pipe diameter of the reflux pipe is determined according to the selected reflux flow, a water outlet pipe 11 is positioned at the upper part of the sludge reflux system 4, one end of the water outlet pipe extends out of the device, the treated sewage is discharged, the pipe diameter of the water outlet pipe 11 is determined according to the inflow water, and the designed flow speed is preferably 0.9 m/s.

The device utilizes the self gravitational potential energy of the water body to achieve the purpose of natural oxygenation, and compared with the traditional biochemical process, the device reduces the energy consumption and investment required by mechanical oxygenation, improves the reaction efficiency and shortens the hydraulic retention time.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A biochemical reaction apparatus for natural oxygenation, comprising: the tank body, the water distribution system and the natural oxygenation system; the water distribution system is arranged at the upper end of the tank body and comprises a water inlet main pipe and a plurality of water distribution branch pipes, and one end of the water inlet main pipe extends into the upper end of the tank body and is connected with the plurality of water distribution branch pipes; the natural oxygenation system comprises a plurality of water spraying fillers and air holes, the water spraying fillers which are arranged in the tank body in a layered mode are located below the water distribution branch pipes, the tank body wall is provided with a plurality of air holes and located below the water spraying fillers, and the lower end of the tank body is provided with a water outlet pipe and located below the air holes.

2. The biochemical reaction device with natural oxygenation as set forth in claim 1, wherein: the water distribution system also comprises a water distribution plate, the water distribution plate is arranged below the water distribution branch pipe and above the natural oxygenation system, and a plurality of water distribution holes are formed in the water distribution plate.

3. The biochemical reaction device with natural oxygenation as set forth in claim 1, wherein: each layer of the water spraying filler is provided with a plurality of water spraying fillers, and the water spraying fillers are arranged in a staggered mode between each layer.

4. The biochemical reaction device with natural oxygenation as set forth in claim 1, wherein: the water spraying filler is in a triangular prism structure.

5. The biochemical reaction apparatus for natural oxygenation as set forth in claim 4, wherein: the water spraying filler is in an inverted triangular prism structure.

6. The biochemical reaction device with natural oxygenation as set forth in claim 1, wherein: the inner wall of the tank body is annularly provided with a water collecting plate and is positioned between the water spraying filler and the air holes.

7. The biochemical reaction device with natural oxygenation as set forth in claim 6, wherein: the included angle between the water collecting plate and the wall of the tank body is 30-60 degrees.

8. The biochemical reaction device with natural oxygenation as set forth in claim 1, wherein: the bottom of the tank body is provided with a sludge return system which comprises a sludge return pump and a sludge return pipeline and is used for extracting biochemical sludge in the return tank body.