CN210656350U

CN210656350U - Aeration tank structure for engineering sewage treatment

Info

Publication number: CN210656350U
Application number: CN201921475582.3U
Authority: CN
Inventors: 李江凯; 邵常健; 张�杰; 李朝斌
Original assignee: Xingtai Jiangqingyu Environmental Protection Technology Co ltd
Current assignee: Xingtai Jiangqingyu Environmental Protection Technology Co ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-06-02
Anticipated expiration: 2029-09-06

Abstract

The utility model belongs to the technical field of sewage treatment, especially, be an aeration tank structure for engineering sewage treatment, include sewage passageway, cross water oxygenation structure and aeration tank, sewage passageway is connected with the water inlet of aeration tank through crossing water oxygenation structure, be equipped with the mechanical impeller who is used for sewage surface oxygenation on the sewage passageway, it is constituteed by the base member and sets up the multilayer water ladder on the base member to cross water oxygenation structure, there is the gas distribution pipe bottom in aeration tank through the support mounting, the equipartition has the aeration head on the gas distribution pipe, gas distribution pipe's inlet end is connected with supply-air duct. The utility model discloses collect mechanical aeration and blast aeration in an organic whole, greatly improved the oxygen charging capacity to make air and sewage carry out strong contact through crossing water oxygenation structure, dissolve the oxygen in the air in sewage, satisfy the oxygen content that good oxygen microorganism needs and the mixed condition of sewage and activated sludge fully contact, rational in infrastructure, satisfy high-efficient aeration demand.

Description

Aeration tank structure for engineering sewage treatment

Technical Field

The utility model relates to a sewage treatment technical field specifically is an aeration tank structure for engineering sewage treatment.

Background

The aeration tank is a structure for sewage treatment by an activated sludge process. A certain sewage retention time is provided in the tank, so that the oxygen quantity required by aerobic microorganisms and the mixing condition of full contact of sewage and activated sludge are met. The aeration tank mainly comprises a tank body, an aeration system and a water inlet and a water outlet. The tank body is generally made of reinforced concrete, and the planar shape of the tank body is rectangular, square, circular and the like.

At present, aeration tank structures applied to an engineering sewage treatment system are mainly divided into two types, one type is blast aeration and the other type is mechanical aeration. Both aeration modes can improve the oxygenation capacity to a certain extent, but the aeration efficiency is too low, and although the prior art of combining blast aeration and mechanical aeration is available at present to improve the aeration efficiency, the structural rationality is insufficient, the improved oxygenation capacity is limited, and the high-efficiency aeration requirement cannot be met.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides an it is not enough to prior art, the utility model provides an aeration tank structure for engineering sewage treatment has solved traditional aeration tank structure and has mainly divided into two kinds, one kind for the blast air aeration, one kind is mechanical aeration. The two aeration modes can improve the oxygenation capacity to a certain degree, but the aeration efficiency is too low, and although the prior art of combining blast aeration and mechanical aeration is available at present to improve the aeration efficiency, the structural rationality is insufficient, the improved oxygenation capacity is limited, and the problem that the high-efficiency aeration requirement cannot be met is solved.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: an aeration tank structure for engineering sewage treatment comprises a sewage channel, a water passing oxygenation structure and an aeration tank, wherein the sewage channel is connected with a water inlet of the aeration tank through the water passing oxygenation structure, a mechanical impeller for sewage surface oxygenation is arranged on the sewage channel, the water passing oxygenation structure consists of a base body and a plurality of layers of water passing ladders arranged on the base body, an air distribution pipe is arranged at the bottom of the aeration tank through a support, aeration heads are uniformly distributed on the air distribution pipe, an air supply pipeline is connected to the air inlet end of the air distribution pipe, an aeration fan is connected to the air inlet end of the air supply pipeline, a flow control valve is arranged on the air supply pipeline, an auxiliary oxygenation mechanism is connected to the air supply pipeline and consists of an oxygen generator and an oxygen conveying pipeline, an oxygen output port of the oxygen generator is connected with the air supply pipeline through the oxygen conveying pipeline, the oxygen conveying pipeline is provided with an electromagnetic valve, a bubble blocking piece is arranged above the aeration head corresponding to the inside of the aeration tank, the side wall of the aeration tank far away from the water passing oxygenation structure is provided with a pre-sedimentation tank, the side wall of the aeration tank is provided with an overflow opening communicated with the pre-sedimentation tank, the overflow opening is provided with a filter plate, and the pre-sedimentation tank is provided with a water outlet.

As an optimized technical proposal of the utility model, the horizontal height of the multilayer water passing ladder from the sewage channel to the aeration tank is gradually decreased.

As a preferred technical proposal of the utility model, the highest level of the sewage liquid level in the aeration tank is lower than the level of the multi-layer water passing ladder which is positioned at the lowest position.

As an optimized technical proposal of the utility model, the bubble baffle is composed of a V-shaped group baffle and a mounting plate, and the V-shaped group baffle is horizontally arranged in the aeration tank through the mounting plate.

As an optimized technical scheme of the utility model, bubble separation spare is multirow dislocation set.

As an optimized technical proposal of the utility model, the level of the overflow gap is lower than the highest level of the sewage level in the aeration tank.

(III) advantageous effects

Compared with the prior art, the utility model provides an aeration tank structure for engineering sewage treatment possesses following beneficial effect:

1. this an aeration tank structure for engineering sewage treatment collects mechanical aeration and blast aeration in an organic whole, has greatly improved the oxygen charging capacity to make air and sewage carry out strong contact through crossing water oxygenation structure, dissolve the oxygen in the air in sewage, satisfy the oxygen content that aerobic microorganisms needed and the mixed condition of sewage and activated sludge fully contact, it is rational in infrastructure, satisfy high-efficient aeration demand.

2. This an aeration tank structure for engineering sewage treatment carries high concentration oxygen in to the aeration tank through the oxygenerator, has further improved the oxygenating ability, simultaneously, through addding the preliminary sedimentation tank to set up the filter in overflow mouth department, effectively filter impurity, reach the preliminary sedimentation effect.

Drawings

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

FIG. 2 is a schematic structural view of the water passing and oxygen increasing structure of the present invention;

fig. 3 is a schematic structural view of the middle bubble barrier of the present invention.

In the figure: 1. a sewage channel; 2. a water passing and oxygen increasing structure; 201. a substrate; 202. a water passing ladder; 3. an aeration tank; 4. a mechanical impeller; 5. an aeration fan; 6. an air supply duct; 7. a flow control valve; 8. an air distribution pipe; 9. an aeration head; 10. an oxygen generator; 11. an oxygen delivery conduit; 12. an electromagnetic valve; 13. a bubble barrier; 1301. a V-shaped group partition plate; 1302. mounting a plate; 14. a pre-sedimentation tank; 15. an overflow port; 16. a filter plate; 17. and (7) a water outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: an aeration tank structure for engineering sewage treatment comprises a sewage channel 1, a water passing oxygenation structure 2 and an aeration tank 3, wherein the sewage channel 1 is connected with a water inlet of the aeration tank 3 through the water passing oxygenation structure 2, a mechanical impeller 4 for sewage surface oxygenation is arranged on the sewage channel 1, the water passing oxygenation structure 2 consists of a base body 201 and a plurality of layers of water passing ladders 202 arranged on the base body 201, an air distribution pipe 8 is arranged at the bottom of the aeration tank 3 through a support, aeration heads 9 are uniformly distributed on the air distribution pipe 8, an air supply pipeline 6 is connected with an air inlet end of the air distribution pipe 8, an aeration fan 5 is connected with an air inlet end of the air supply pipeline 6, a flow control valve 7 is arranged on the air supply pipeline 6, an auxiliary oxygenation mechanism is connected on the air supply pipeline 6 and consists of an oxygen generator 10 and an oxygen conveying pipeline 11, an oxygen output port of the oxygen generator 10 is connected with the, the oxygen conveying pipeline 11 is provided with an electromagnetic valve 12, the inside of the aeration tank 3 is provided with a bubble barrier 13 above the corresponding aeration head 9, the side wall of the aeration tank 3 far away from the water passing oxygenation structure 2 is provided with a pre-sedimentation tank 14, the side wall of the aeration tank 3 is provided with an overflow opening 15 communicated with the pre-sedimentation tank 14, the overflow opening 15 is provided with a filter plate 16, and the pre-sedimentation tank 14 is provided with a water outlet 17.

In this embodiment, sewage passageway 1, cross the connected mode between water oxygenation structure 2, aeration tank 3 and the preliminary sedimentation tank 14 are reinforced concrete integrated into one piece by casting, the utility model discloses still include control system, control system adopts 80C51 singlechip as control chip, aeration fan 5, flow control valve 7, oxygenerator 10 and solenoid valve 12 respectively with 80C51 singlechip electric connection, the utility model discloses well mechanical impeller 4 drives through driving motor, this driving motor and 80C51 singlechip electric connection.

Specifically, the horizontal heights of the multiple water steps 202 between the sewage passage 1 and the aeration tank 3 are gradually decreased.

In this embodiment, the sewage generates a sputtering effect when passing through the multi-layer water passing ladder 202, and strongly contacts with the surrounding air to dissolve oxygen in the air into the sewage, thereby achieving an oxygenation effect.

Specifically, the highest level of the sewage level in the aeration tank 3 is lower than the lowest level in the multi-layered water step 202.

In this embodiment, the above-described structure is designed to reserve a sufficient space for oxygen in the sewage dissolved air, and when the sewage in the aeration tank 3 reaches the maximum liquid level, the sewage transport in the sewage passage 1 is stopped.

Specifically, the air bubble barrier 13 is composed of a V-shaped group partition 1301 and a mounting plate 1302, and the V-shaped group partition 1301 is horizontally mounted inside the aeration tank 3 through the mounting plate 1302.

In this embodiment, through the setting of V type group baffle 1301, can play the effect of the come-up of separation bubble, the contact time of extension bubble and sewage improves the oxygenation ability.

Specifically, the bubble barriers 13 are arranged in a plurality of rows in a staggered manner.

In this embodiment, the multiple rows of the bubble blocking members 13 arranged in a staggered manner make the contact time between the bubbles and the sewage longer, and the oxygenation effect better.

Specifically, the level of the overflow port 15 is lower than the highest level of the sewage level in the aeration tank 3.

In this embodiment, the above structural design ensures that the sewage in the aeration tank 3 can automatically overflow into the pre-sedimentation tank 14 after being aerated.

The utility model discloses a theory of operation and use flow: sewage flows into an aeration tank 3 through a sewage channel 1 and a water passing oxygenation structure 2, in the process of sewage circulation, a mechanical impeller 4 rotates to stir the sewage in the sewage channel 1, so that oxygen in the air is dissolved in the sewage, mechanical aeration is completed, the sewage after the mechanical aeration is in violent contact with the air again under the sputtering action of a multi-layer water passing ladder 202 in the sewage channel 1 to achieve the purpose of secondary oxygenation, the sewage after the secondary oxygenation flows into the aeration tank 3, under the action of an aeration fan 5, the sewage is aerated through an air supply pipeline 6, an air distribution pipe 8 and an aeration head 9, the mixing condition of oxygen amount required by aerobic microorganisms and full contact of the sewage and activated sludge is met, the oxygenation capacity is improved, oxygen can be generated through an oxygen generator 10 in the aeration process, the prepared high-concentration oxygen is conveyed into the air supply pipeline 6 through an oxygen conveying pipeline 11, the purpose of improving the aeration effect is achieved, and the treated water overflows the overflow port 15, is filtered by the filter plate 16 and then enters the pre-sedimentation tank 14 for sedimentation.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. 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. The utility model provides an aeration tank structure for engineering sewage treatment, includes sewage passageway (1), crosses water oxygenation structure (2) and aeration tank (3), sewage passageway (1) is connected its characterized in that through the water inlet of crossing water oxygenation structure (2) with aeration tank (3): the sewage treatment device is characterized in that a mechanical impeller (4) for aeration of the sewage surface is arranged on the sewage channel (1), the water passing aeration structure (2) is composed of a base body (201) and a plurality of layers of water passing steps (202) arranged on the base body (201), an air distribution pipe (8) is arranged at the bottom of the aeration tank (3) through a support, aeration heads (9) are uniformly distributed on the air distribution pipe (8), an air inlet end of the air distribution pipe (8) is connected with an air supply pipeline (6), an air inlet end of the air supply pipeline (6) is connected with an aeration fan (5), a flow control valve (7) is arranged on the air supply pipeline (6), an auxiliary aeration mechanism is connected onto the air supply pipeline (6), the auxiliary aeration mechanism is composed of an oxygen generator (10) and an oxygen conveying pipeline (11), an oxygen outlet of the oxygen generator (10) is connected with the air supply pipeline (6) through the oxygen conveying, be equipped with solenoid valve (12) on oxygen conveying pipeline (11), the inside top that corresponds aeration head (9) of aeration tank (3) is equipped with bubble barrier spare (13), aeration tank (3) are kept away from and are equipped with preliminary sedimentation tank (14) on the lateral wall of water oxygenation structure (2), be equipped with on the lateral wall of aeration tank (3) overflow mouth (15) that set up with preliminary sedimentation tank (14) intercommunication, be equipped with filter (16) on overflow mouth (15), be equipped with delivery port (17) on preliminary sedimentation tank (14).

2. An aeration tank structure for engineering sewage treatment according to claim 1, characterized in that: the horizontal heights of the multi-layer water passing steps (202) between the sewage channel (1) and the aeration tank (3) are gradually reduced.

3. An aeration tank structure for engineering sewage treatment according to claim 1, characterized in that: the highest level of the sewage liquid level in the aeration tank (3) is lower than the level of the lowest level in the multi-layer water passing ladder (202).

4. An aeration tank structure for engineering sewage treatment according to claim 1, characterized in that: the air bubble baffle (13) is composed of a V-shaped group clapboard (1301) and a mounting plate (1302), and the V-shaped group clapboard (1301) is horizontally mounted inside the aeration tank (3) through the mounting plate (1302).

5. An aeration tank structure for engineering sewage treatment according to claim 1, characterized in that: the bubble blocking pieces (13) are arranged in a multi-row staggered mode.

6. An aeration tank structure for engineering sewage treatment according to claim 1, characterized in that: the level height of the overflow opening (15) is lower than the highest level height of the sewage level in the aeration tank (3).