CN112174328A

CN112174328A - Outgas backflow channel device and biochemical reactor

Info

Publication number: CN112174328A
Application number: CN202011196555.XA
Authority: CN
Inventors: 任天奇; 徐旭; 徐钊; 陈凯华
Original assignee: Beijing Bohuite Environmental Technology Co ltd
Current assignee: Beijing Bohuite Environmental Technology Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-01-05

Abstract

The application relates to the technical field of water treatment, in particular to an air release backflow channel device and a biochemical reactor, which comprise a box body with an open upper end surface, wherein a guide plate for dividing the box body into two independent areas is arranged in the box body, the box body is provided with a water inlet hole and a water outlet hole which enable the two independent areas to be respectively communicated with the outer side of the box body, the distance between the guide plate and the water outlet hole is gradually reduced or increased along the direction from bottom to top, and the up end height of guide plate is less than the height of the effective liquid level of the inside solution of box, and biochemical reactor includes above-mentioned outgas backward flow passageway device, the position of the last water inlet of box and the good oxygen district of the inside intercommunication of box and the one-level anoxic district of the position of the last water outlet of box and the inside intercommunication of box, has reached and has reduced the energy consumption, conveniently adjusts the flow, reduces the effect to the destruction of oxygen deficiency environment.

Description

Outgas backflow channel device and biochemical reactor

Technical Field

The application relates to the technical field of water treatment, in particular to an outgas backflow channel device and a biochemical reactor.

Background

Is currently in convention A²In the biochemical sewage treating process, three kinds of pond area with different characteristics and functions, including anaerobic, anoxic and aerobic, are set. Wherein the anaerobic zone is a non-aerobic zone of the biological reaction tank and has no nitrate or nitrous acidIn the area where the salt exists, phosphorus-accumulating microorganisms carry out the processes of absorbing organic matters and releasing phosphorus in the anaerobic zone; the anoxic zone is a non-aerobic zone of the biological reaction tank and is an area where nitrate or nitrite exists, and denitrification reaction can be carried out when sufficient organic matters are obtained; the aerobic zone is an oxygen charging zone of the biochemical reaction tank, the oxygen content in water is usually up to more than 1.0mg/L through aeration, and microorganisms in the zone can carry out degradation and nitration reactions of organic matters. The three areas are mutually matched, so that the sewage can complete the process of removing nitrogen and phosphorus and reducing pollutants such as BOD, COD and the like.

Since the aerobic reaction in the aerobic zone can produce nitrate nitrogen, while the denitrification reaction is completed in the anoxic zone and requires a certain amount of organic matter, it is necessary to reflux the nitrate nitrogen produced in the aerobic zone to the anoxic zone. In the related art, a transfer pump is often used to transfer the nitrified liquid to the anoxic zone, and the inventors consider that the transfer mode in the related art has problems of small flow rate and inconvenient adjustment.

Disclosure of Invention

In order to adjust the flow conveniently and reduce the damage to the oxygen-deficient environment, the application provides an outgas backflow channel device and a biochemical reactor.

The application provides an outgas backflow channel device adopts following technical scheme:

the utility model provides an outgas backflow channel device, includes the open box of up end, and the box is inside to be provided with the guide plate that divides into two independent regions with the box, offers the inlet opening and the apopore that make two independent regions communicate with the box outside respectively on the box, and the distance between guide plate and the apopore diminishes or the grow gradually along the direction from bottom to top to the up end height of guide plate is less than the height of the effective liquid level of the inside solution of box.

Through adopting above-mentioned technical scheme, need make the aqueous solution among the good oxygen district flow back to the oxygen deficiency district, with the position and the inside intercommunication of box of oxygen deficiency district at the inlet opening, make the oxygen deficiency pond in the position and the inside intercommunication of box of apopore, the inside aqueous solution of good oxygen pond enters into inside after the box, the aqueous solution liquid level in inlet opening place region can rise gradually, and the velocity of flow of the inside aqueous solution vertical direction in this region can change, because the density of liquid and gas is different, just so reduced the quantity of small bubble in the solution, reduced the solution and flowed back to the destruction of oxygen deficiency district to the oxygen deficiency environment, and people can change the size of water inlet or apopore on the box as required, change the speed that the inside aqueous solution of good oxygen district flowed into the oxygen deficiency district, just so made things convenient for people to the regulation of backward flow volume.

Preferably, the side surface of the water outlet hole is vertical to the plane of the flow guide plate and is arranged at a position close to the bottom surface of the box body.

Through adopting above-mentioned technical scheme, the regional inside aqueous solution of inlet opening enters into the regional back of apopore place through the guide plate, and the flow direction of solution can change, just so can release the bubble of smuggleing secretly in the solution.

Preferably, the side surface where the water inlet hole is located is the same as or opposite to the side surface where the water outlet hole is located, and is arranged at a position close to the bottom surface of the box body.

Preferably, the water inlet hole is formed in the bottom of the box body.

The biochemical reactor provided by the application adopts the following technical scheme:

a biochemical reactor comprises the air release backflow channel device, an aerobic zone and a first-stage anoxic zone, wherein the aerobic zone is formed by communicating the position of a water inlet hole in a box body with the interior of the box body, and the first-stage anoxic zone is formed by communicating the position of a water outlet hole in the box body with the interior of the box body.

By adopting the technical scheme, when the biochemical reactor is used, the air release backflow channel device can convey the aqueous solution in the aerobic zone to the first-stage anoxic zone and can reduce bubbles in the aqueous solution entering the anoxic zone.

Preferably, the side wall of the box body opposite to the guide plate is provided with a water through hole which penetrates through the box body and is used for communicating the box body with the settling area, and the water through hole and the water inlet hole are located in the same independent area.

By adopting the technical scheme, after the aqueous solution in the aerobic zone enters the interior of the box body through the water inlet hole, part of the aqueous solution can enter the interior of the settling zone through the water passing hole, so that the shunting of the solution in the aerobic zone is realized.

Preferably, the side wall of the box body opposite to the guide plate is provided with a water through hole which penetrates through the box body and is used for communicating the box body with the second-stage anoxic zone, and the water through hole and the water outlet hole are located in the same independent area.

Through adopting above-mentioned technical scheme, people can make second grade anoxic zone and the inside intercommunication of box as required.

Preferably, the highest point of the water through hole is positioned above the effective liquid level in the box body.

Preferably, the sectional area of the water outlet hole is smaller than that of the water inlet hole, and the sectional area of the water outlet hole is larger than that of the water passing hole.

Through adopting above-mentioned technical scheme, apopore and water hole homoenergetic are discharged aqueous solution to the box outside, and the sectional area of inlet opening is great can make the liquid level of the inside aqueous solution of box maintain a stable state.

Drawings

FIG. 1 is an overall structural view of one example of an outgas return passage device in an embodiment of the present application;

FIG. 2 is a top view of a biochemical reactor in an embodiment of the present application (where the directions of the solid arrows are the flow directions of the solutions inside the biochemical reactor);

FIG. 3 is a cross-sectional view of a biochemical reactor in an embodiment of the present application (where the directions of the solid arrows are the flow directions of the solutions inside the biochemical reactor);

fig. 4 is an overall configuration diagram of another example of the outgas return passage device in the embodiment of the present application.

In the figure, 1, an outgas return channel device; 11. a box body; 12. a baffle; 13. a water inlet hole; 14. a water outlet hole; 15. water passing holes; 2. a biochemical reactor; 21. an aerobic zone; 22. a primary anoxic zone; 24. a precipitation zone.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1, the present application provides an outgas backflow channel device, including a box 11 and a flow guide plate 12, an upper end surface of the box 11 is open, the flow guide plate 12 is fixed inside the box 11 in an inclined manner and divides the box 11 into two mutually independent areas, in this example, a distance between the flow guide plate 12 and a water outlet hole 14 gradually decreases along a direction from bottom to top, and a height of the upper end surface of the flow guide plate 12 is lower than a height of the upper surface of the box 11; the box body 11 is provided with a water inlet 13 and a water outlet 14 which enable two independent areas to be respectively communicated with the outer side of the box body 11, the whole shape of the water outlet 14 is long-strip-shaped, the side surface where the water outlet is located is vertical to the plane where the guide plate 12 is located, the water inlet 13 is arranged on the bottom surface of the box body 11 or on the side surface opposite to the water outlet 14, in the example, the water inlet 13 is arranged on the side surface opposite to the water outlet 14, and the shape of the water outlet 14 can be other shapes similar to a rectangle.

Referring to fig. 2 and 3, when the aqueous solution in the aerobic zone 21 is required to flow back to the anoxic zone, the position of the water inlet 13 of the aerobic zone 21 is communicated with the interior of the box body 11, the position of the water outlet 14 of the anoxic zone is communicated with the interior of the box body 11, after the aqueous solution in the aerobic pool enters the interior of the box body 11, the liquid level of the aqueous solution in the area where the water inlet 13 is located gradually rises, the flow rate of the aqueous solution in the vertical direction in the area is changed, the densities of the liquid and the gas are different, so that the number of small bubbles in the solution is reduced, the gas release process of the aqueous solution is completed, the damage to the anoxic environment is reduced, and people can change the size of the water inlet 13 or the water outlet 14 on the box body 11 according to change the speed of the aqueous solution in the aerobic zone 21 flowing into the anoxic zone, so that the adjustment of the back flow amount is.

The principle that the oxygen content in the solution can be reduced is as follows: 1. the integral structure of the channel increases the residence time of the liquid; 2. because the densities of the liquid and the gas are different, the G value (velocity gradient) of the liquid is increased when the flow velocity is increased, and bubbles can escape when the flow direction is changed; 3. the smaller the flow rate of the inlet water from the aerobic zone is, the less the amount of the entrained bubbles is; in summary, the flow rate of the solution is changed by forming a bell mouth with a wide opening facing upwards, so that bubbles in the water are released, and the formation of dissolved oxygen from oxygen in the bubbles is reduced.

Referring to fig. 1 and 4, in order to expand the application range of the outgassing backflow channel device 1 in the present application, a water through hole 15 penetrating through the device is formed in the side wall of the box body 11 opposite to the flow guide plate 12, the lowest point of the water through hole 15 is lower than the effective liquid level of the solution inside the box body 11, the highest point of the water through hole is higher than the effective liquid level of the solution inside the box body 11, and the water inlet hole 13 and the water outlet hole 14 are both formed at positions close to the bottom surface of the box body 11, so that the possibility of short flow of the solution inside the; the sectional area of the water outlet hole 14 is smaller than that of the water inlet hole 13, the sectional area of the water outlet hole 14 is larger than that of the water through hole 15, and when the water through hole 15 and the water inlet hole 13 are positioned in the same independent area, the box body 11 can be communicated to the settling area 24 at the position of the water through hole 15; when the water passing hole 15 and the water outlet hole 14 are located in the same independent area, the tank 11 can be communicated to the secondary anoxic zone at the position of the water passing hole 15.

Referring to fig. 2, the present application further discloses a biochemical reactor, which includes the above-mentioned outgassing return channel device 1, an aerobic zone 21 and a primary anoxic zone 22, wherein the aerobic zone 21 is communicated with the inside of the tank 11 at the position of the water inlet 13, and the primary anoxic zone 22 is communicated with the inside of the tank 11 at the position of the water outlet 14.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. An outgas return channel device, which is characterized in that: including the open box of up end (11), box (11) inside is provided with guide plate (12) of dividing box (11) into two independent regions, set up inlet opening (13) and apopore (14) that make two independent regions communicate with the box (11) outside respectively on box (11), distance between guide plate (12) and apopore (14) diminishes or the grow gradually along the direction from bottom to top, and the up end height of guide plate (12) is less than the height of the effective liquid level of box (11) inside solution.

2. The outgas return channel apparatus of claim 1, wherein: the side surface of the water outlet hole (14) is vertical to the plane of the guide plate (12) and is arranged at a position close to the bottom surface of the box body (11).

3. The outgas return channel apparatus of claim 2, wherein: the side surface of the water inlet hole (13) is the same as or opposite to the side surface of the water outlet hole (14), and is arranged at a position close to the bottom surface of the box body (11).

4. The outgas return channel apparatus of claim 2, wherein: the water inlet hole (13) is arranged at the bottom of the box body (11).

5. A biochemical reactor, characterized by: comprising the outgassed return channel arrangement (1) according to any one of claims 1 to 4, an aerobic zone (21) at the location of the water inlet opening (13) in the tank (11) communicating with the interior of the tank (11), and a primary anoxic zone (22) at the location of the water outlet opening (14) in the tank (11) communicating with the interior of the tank (11).

6. The biochemical reactor according to claim 5, wherein: a water passing hole (15) which penetrates through the box body (11) and is used for communicating the box body (11) with the settling area (24) is formed in the side wall, right opposite to the guide plate (12), of the box body (11), and the water passing hole (15) and the water inlet hole (13) are located in the same independent area.

7. The biochemical reactor according to claim 5, wherein: a water passing hole (15) which penetrates through the box body (11) and is used for communicating the box body (11) with the second-stage anoxic zone is formed in the side wall, right opposite to the guide plate (12), of the box body (11), and the water passing hole (15) and the water outlet hole (14) are located in the same independent area.

8. A biochemical reactor according to claim 6 or 7, characterized in that: the highest point of the water through hole (15) is positioned above the effective liquid level in the box body (11).

9. The biochemical reactor according to claim 8, wherein: the sectional area of the water outlet hole (14) is smaller than that of the water inlet hole (13), and the sectional area of the water outlet hole (14) is larger than that of the water passing hole (15).