Aeration tank auxiliary gas injection structure

Abstract

The utility model discloses an auxiliary gas injection structure of an aeration tank, which comprises a reaction tank, a plurality of gas delivery pipes are arranged in the reaction tank, a plurality of vent pipes are vertically arranged above the gas delivery pipes, a plurality of groups of vent holes are arranged on the outer surfaces of the vent pipes along the vertical direction in an array manner, eight vent holes are arranged on the vent pipes on the same horizontal plane, and included angles are equal. A pipe cap is arranged at the top of the breather pipe, the breather pipe is wrapped with a waterproof breathable film and fastened through a rolling belt, the inner side of the breather pipe is filled with glass balls, an annular installation piece is arranged at the bottom of the inner side of the breather pipe and fixed through threads, a metal net is fixedly arranged on the inner side of the annular installation piece, and the hole diameter of the metal net is not larger than the diameter of the glass balls. The aeration device has the advantages of uniform aeration, blockage resistance and convenience in maintenance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment technical field especially relates to a supplementary aeration structure of aeration tank. BACKGROUND

[0002] The aeration tank is the core facility for organic matter degradation and microbial metabolism in sewage treatment, and the aeration effect directly affects the sewage treatment efficiency.

[0003] The traditional aeration system adopts fixed aeration disc or perforated pipe structure, and has problems of uneven bubble distribution, low oxygen utilization rate and easy blockage.Especially under the condition of high sludge concentration, the aeration resistance of the traditional aeration device increases, resulting in increased energy consumption, and the aeration hole is easily covered by sludge particles, affecting long-term stable operation.In addition, the maintenance cost of the aeration structure in the prior art is high, and the aeration assembly needs to be cleaned or replaced frequently.

[0004] Therefore, an auxiliary aeration structure capable of realizing uniform aeration, anti-clogging and convenient maintenance is needed to improve the oxygen transfer efficiency and operation economy of the aerobic tank. SUMMARY

[0005] The utility model discloses a supplementary aeration structure of aeration tank to solve the uneven bubble distribution, low oxygen utilization rate and easy blockage of the common aeration equipment.

[0006] The utility model discloses the following technical scheme to realize the above-mentioned purpose: including the reaction pool, install a plurality of gas pipes in the reaction pool, the vertical of a plurality of gas pipes top is equipped with a plurality of vent pipes, the vent pipe outer surface is along the vertical direction array and is equipped with a plurality of groups of vent hole, the vent pipe on the same horizontal plane contains eight vent holes and the included angle is equal, the vent pipe top is equipped with the pipe cap, the vent pipe outside is wrapped and is equipped with waterproof breathable membrane and is fastened through the rolling strip, the vent pipe inboard is filled with glass ball.

[0007] Further, the vent pipe inboard bottom is equipped with the annular mounting piece and is fixed through the screw thread, the metal net is fixed in the annular mounting piece inboard, the metal net aperture is not more than the glass ball diameter.

[0008] Further, the gas pipe and the vent pipe are connected through the tee pipe piece.

[0009] Further, the pipe cap and the vent pipe top outer surface are fastened through the screw thread.

[0010] Further, the gas pipe one end is closed, and the other end is connected with the external gas supply equipment after penetrating the reaction pool.

[0011] Further, the bottom of the reaction tank is a three-section structure, the middle part is a horizontal ground, and the two sides of the horizontal ground are inclined grounds, and the inclined directions are both towards the horizontal ground.

[0012] Beneficial effects: The utility model discloses reasonable design has following beneficial effects:

[0013] 1. In the utility model scheme, through the vertical arrangement of multiple air pipes and the design of eight air holes with equal angles distributed in the same horizontal plane, the gas forms multidirectional diffusion in the reaction tank, effectively avoids local area bubble accumulation or aeration dead angle, and significantly improves oxygen distribution uniformity.

[0014] 2. In the utility model scheme, the air pipe is wrapped with a waterproof and breathable film and is fastened by rolling, which can prevent sludge particles from entering the inside of the air pipe and ensure efficient gas penetration; the inside is filled with glass balls to form a porous medium layer, which further refines the bubbles, prolongs the gas-liquid contact time, reduces the space volume in the pipe body and the air inflation amount, and blocks the glass balls from moving downward through the metal mesh to avoid blocking the gas pipeline.

[0015] 3. In the utility model scheme, the annular mounting piece and the pipe cap are fixed by threads, which facilitates disassembly, cleaning or replacement of the waterproof and breathable film, the three-section tank bottom design promotes natural sludge sliding to the middle part, reduces the interference of the bottom sediments on the aeration structure, and reduces the maintenance frequency. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of the utility model;

[0017] Fig. 2 It is a partial structural schematic view of the utility model;

[0018] Fig. 3 It is a sectional view of the air pipe structure of the utility model.

[0019] In the drawing: 1-reaction tank, 2-gas pipeline, 3-air pipe, 4-waterproof and breathable film;

[0020] 101-horizontal ground, 102-inclined ground, 301-air hole, 302-pipe cap, 303-annular mounting piece, 304-metal mesh. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Combined Figs. 1 to 3The auxiliary aeration structure of the aeration tank includes a reaction tank 1, the bottom of which is designed in three sections: a horizontal ground 101 in the middle and two inclined grounds 102 on both sides, which are inclined towards the horizontal ground 101, facilitating sludge accumulation and convenient cleaning and discharge. A plurality of gas delivery pipes 2 are arranged in parallel in the reaction tank 1, one end of each of the gas delivery pipes 2 is closed, and the other end penetrates the side wall of the reaction tank 1 and is connected with an external air blower. The gas delivery pipes 2 are connected with a plurality of vertical air pipes 3 through a tee pipe fitting, the top of each of the air pipes 3 is provided with a threaded pipe cap 302, the bottom is fixed with a metal mesh 304 through an annular mounting member 303, and the aperture of the metal mesh 304 is smaller than the diameter of the glass balls, preventing the glass balls from entering the gas delivery pipes 2.

[0023] A group of air holes 301 are arranged on the outer surface of the air pipe 3 every 20 cm in the vertical direction, each group containing eight circular holes distributed at equal angles (45° interval) in the circumferential direction, and the aperture is 2 mm. The air pipe 3 is wrapped with a PTFE waterproof and breathable film 4 on the outer side, and is tightly sealed by using a stainless steel rolling belt. The air pipe 3 is filled with glass balls with a diameter of 15 mm, and the glass ball layer forms a porous medium layer, further refining the gas bubbles and prolonging the gas-liquid contact time.

[0024] Working principle: when the utility model is running, the external air blower inputs air into the gas delivery pipe 2, the gas is distributed to each air pipe 3 through the tee pipe fitting, and is dispersed into micro-bubbles by the waterproof and breathable film 4 after seeping out of the air holes 301, the glass ball layer generates turbulent flow to the airflow, improves the oxygen mass transfer efficiency, and reduces the space volume in the pipe body to reduce the air inflation amount; the inclined ground 102 guides the sludge to slide to the horizontal ground 101, avoiding accumulation around the air pipe 3; when maintenance is required, the pipe cap 302 can be unscrewed to clean the glass balls or replace the waterproof and breathable film 4, and the metal mesh 304 can prevent the glass balls from falling into the gas delivery pipe 2 and causing blockage.

[0025] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0026] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. An auxiliary aeration structure for an aeration tank, comprising a reaction tank (1), characterized in that: The reaction tank (1) is provided with a plurality of gas pipes (2), and a plurality of air pipes (3) are vertically arranged above the gas pipes (2), the outer surface of the air pipes (3) is provided with a plurality of groups of air holes (301) arranged in the vertical direction, the air pipes (3) on the same horizontal plane contain eight air holes (301) and have equal angles, the top of the air pipes (3) is provided with a pipe cap (302), the outer surface of the air pipes (3) is wrapped with a waterproof and breathable film (4) and is fastened by rolling, and the inner side of the air pipes (3) is filled with glass balls.

2. The auxiliary air injection structure of an aeration tank according to claim 1, characterized in that: The inner side of the air pipes (3) is provided with an annular mounting part (303) at the bottom and is fixed by screwing, the inner side of the annular mounting part (303) is fixedly provided with a metal mesh (304), and the aperture of the metal mesh (304) is not greater than the diameter of the glass balls.

3. The auxiliary air injection structure of an aeration tank according to claim 2, characterized in that: The gas pipes (2) and the air pipes (3) are connected by a three-way pipe.

4. The auxiliary air injection structure of an aeration tank according to claim 3, characterized in that: The pipe cap (302) is fastened with the outer surface of the top of the air pipes (3) by screwing.

5. The auxiliary air injection structure of an aeration tank according to claim 4, characterized in that: One end of the gas pipe (2) is closed, and the other end penetrates through the reaction tank (1) and is connected with external gas conveying equipment.

6. The auxiliary air injection structure of an aeration tank according to claim 5, characterized in that: The bottom of the reaction tank (1) is a three-section structure, the middle part is a horizontal ground (101), and the two sides of the horizontal ground (101) are inclined grounds (102) and are inclined towards the horizontal ground (101).

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