CN216513339U

CN216513339U - Sewage treatment plant based on AAO technology

Info

Publication number: CN216513339U
Application number: CN202122953372.4U
Authority: CN
Inventors: 吴起鹏; 吴春生
Original assignee: Anhui Qingyuan Environmental Water Co ltd
Current assignee: Anhui Qingyuan Environmental Water Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-13
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses a sewage treatment device based on an AAO (anaerobic-anoxic-oxic) process, which comprises a treatment box, wherein the treatment box is internally divided into an anaerobic tank, an anoxic tank and an aerobic tank by a first partition plate and a second partition plate, the anoxic tank is arranged between the anaerobic tank and the aerobic tank, and the top of the anaerobic tank is provided with a removing mechanism for removing garbage in sewage; the cleaning mechanism comprises a filter screen and a cleaning brush, the filter screen is used for filtering waste in the sewage, the cleaning brush is used for cleaning the surface of the filter screen, and the filter screen is fixedly arranged on the fixed frame. According to the utility model, the cleaning mechanism is arranged on the anaerobic tank and is used for removing the waste in the sewage, so that the influence of the waste on the sewage treatment effect and the sewage treatment efficiency is avoided; the sewage treatment device has the advantages of centralized functional areas, simple structure and capability of realizing sludge external circulation and saving resource consumption, and the set recovery box is used for sludge recovery.

Description

Sewage treatment plant based on AAO technology

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment device based on an AAO (anaerobic-anoxic-oxic) process.

Background

The AAO process is a sewage treatment process which adds an anaerobic tank A on the basis of an A/O process and integrates an anaerobic zone, an anoxic zone and an aerobic zone into a whole, can simultaneously perform nitrogen and phosphorus removal, has the characteristics of relatively simple operation flow, low operation cost, difficult sludge bulking and the like, and is widely applied to the field of wastewater treatment. The principle of the AAO process is that various microorganisms in the activated sludge are utilized to decompose organic matters and remove nitrogen and phosphorus through a series of actions under anaerobic and aerobic conditions.

Waste such as industrial waste and domestic waste is generally present in the sewage and is discharged into the anaerobic tank, as shown in fig. 5, sludge is attached to the waste and sinks into the bottom of the anaerobic tank along with the waste, and the efficiency and effect of sewage treatment are affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sewage treatment device based on an AAO (anaerobic-anoxic-oxic) process, which solves the following technical problems: the waste in the sewage affects the efficiency and effect of sewage treatment.

The purpose of the utility model can be realized by the following technical scheme:

a sewage treatment device based on an AAO process comprises a treatment box, wherein the treatment box is internally divided into an anaerobic tank, an anoxic tank and an aerobic tank by a first partition plate and a second partition plate, the anoxic tank is arranged between the anaerobic tank and the aerobic tank, and the top of the anaerobic tank is provided with a removing mechanism for removing garbage in sewage; the clearing mechanism comprises a filter screen and a cleaning brush, the filter screen is used for filtering waste in sewage, the cleaning brush is used for cleaning the surface of the filter screen, the filter screen is fixedly installed on a fixed frame, the cleaning brush is fixedly installed at the bottom of a U-shaped frame, a movable lead screw is installed in a sliding groove formed in one side of the fixed frame in a rotating mode, one side of the U-shaped frame is connected to the movable lead screw in a threaded mode, the other side of the U-shaped frame is installed on the fixed frame in a sliding mode, and a recovery box is arranged on one side of the treatment box.

As a further scheme of the utility model, one side of the fixed frame is in threaded connection with a lifting screw rod, the lifting screw rod is rotatably installed in a first groove formed in a first partition plate, the other side of the fixed frame is slidably installed on a sliding rod, the sliding rod is fixedly installed in a second groove formed in the inner wall of the treatment box, and an output shaft of a lifting motor fixedly installed at the top of the treatment box is fixedly connected with the end part of the lifting screw rod.

As a further scheme of the utility model, an output shaft of a moving motor fixedly arranged in the fixed frame is fixedly connected with the end part of a moving screw rod.

As a further scheme of the utility model, the recycling box is communicated with an aerobic pool on the treatment box through a third connecting pipe, a drain pipe is arranged on one side of the recycling box, and the bottom of the recycling box is communicated with an anaerobic pool on the treatment box through a sludge recycling pipe.

As a further scheme of the utility model, a discharge pipe arranged on one side of the treatment box is communicated with an anaerobic tank, and a water inlet pipe is communicated with one side of the anaerobic tank.

As a further scheme of the utility model, the anaerobic tank is communicated with the anoxic tank through a first connecting pipe, and the anoxic tank is communicated with the aerobic tank through a second connecting pipe.

As a further scheme of the utility model, stirrers are arranged in the anaerobic tank and the anoxic tank, and a plurality of aeration holes are arranged on a plurality of aeration pipes arranged in the aerobic tank.

The utility model has the beneficial effects that:

according to the AAO process-based sewage treatment device, the cleaning mechanism is arranged on the anaerobic tank and used for removing the waste in the sewage, so that the influence of the waste on the sewage treatment effect and the sewage treatment efficiency is avoided; the sewage treatment device has the advantages of centralized functional areas, simple structure and capability of realizing sludge external circulation and saving resource consumption, and the set recovery box is used for sludge recovery.

Drawings

The utility model will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of a sewage treatment apparatus based on AAO process of the present invention;

FIG. 2 is a schematic view of the inside structure of the treatment tank of the present invention;

FIG. 3 is a schematic view of the clearing mechanism of the present invention;

FIG. 4 is a schematic structural view of the fixing frame of the present invention;

FIG. 5 is a schematic view showing the structure of a sewage treatment apparatus according to the prior art.

In the figure: 1. a treatment tank; 2. an anaerobic tank; 3. an anoxic tank; 4. an aerobic tank; 5. a clearing mechanism; 51. a fixed frame; 52. a slide bar; 53. lifting a screw rod; 54. a U-shaped frame; 55. a cleaning brush; 56. a filter screen; 57. a sliding groove; 58. moving the lead screw; 61. a first separator; 62. a second separator; 7. an aeration pipe; 8. a stirrer; 9. a discharge pipe; 10. a water inlet pipe; 11. a recycling bin; 12. a drain pipe; 13. a sludge recovery pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention is a sewage treatment apparatus based on an AAO process, including a treatment tank 1, the treatment tank 1 is divided into an anaerobic tank 2, an anoxic tank 3 and an aerobic tank 4 by a first partition plate 61 and a second partition plate 62, the anoxic tank 3 is disposed between the anaerobic tank 2 and the aerobic tank 4, and a cleaning mechanism 5 for removing garbage in sewage is disposed at the top of the anaerobic tank 2; handle 1 one side of case and be provided with collection box 11, collection box 11 is through the third connecting pipe with handle the good oxygen pond 4 intercommunication on the case 1, collection box 11 one side is provided with drain pipe 12, collection box 11 bottom through mud recovery pipe 13 with handle the anaerobism pond 2 intercommunication on the case 1, mud recovery pipe 13 passes through the sludge pump drive.

Referring to fig. 3-4, the removing mechanism 5 includes a filter screen 56 for filtering the waste in the sewage, the filter screen 56 is fixedly installed on the fixed frame 51, one side of the fixed frame 51 is connected to the lifting screw 53 by screw threads, the lifting screw 53 is rotatably installed in a first groove formed on the first partition 61, the other side of the fixed frame 51 is slidably installed on the sliding rod 52, the sliding rod 52 is fixedly installed in a second groove formed on the inner wall of the treatment box 1, the top of the treatment box 1 is fixedly installed with a lifting motor, the output shaft of the lifting motor is fixedly connected with the end of the lifting screw 53, one side of the fixed frame 51 is provided with a sliding groove 57, the sliding groove 57 is rotatably installed with a movable screw 58, the fixed frame 51 is internally and fixedly installed with a movable motor, the output shaft of the movable motor is fixedly connected with the end of the movable screw 58, the movable screw 58 is connected with one side of the U-shaped frame 54 by screw threads, the other side of the U-shaped frame 54 is slidably installed on the fixed frame 51, the bottom of the U-shaped frame 54 is fixedly provided with a cleaning brush 55 for cleaning the surface of the filter screen 56, and the cleaning brush 55 is arranged above the filter screen 56. A discharge pipe 9 is arranged on one side of the treatment box 1, the discharge pipe 9 is communicated with the anaerobic tank 2, the discharge pipe 9 is arranged on the top of the side wall of the treatment box 1, and when sewage exceeds a limit height, the discharge pipe can be used as an overflow port, so that the sewage can be discharged through the discharge pipe 9; during the use, the elevator motor output shaft drives elevator screw 53 and rotates, and then drives fixed frame 51 and slides on slide bar 52, fixed frame 51 drives filter screen 56 rebound, and then drives filterable discarded object on filter screen 56, the removal motor output shaft drives removal lead screw 58 and rotates, it rotates and drives U type frame 54 and removes to remove lead screw 58, the discarded object on filter screen 56 surface is clear away to the cleaning brush 55 of U type frame 54 bottom, and discharge the discarded object from arranging material pipe 9, avoid the discarded object to influence the treatment effect and the sewage treatment efficiency of sewage.

Referring to fig. 1-2, one side of the anaerobic tank 2 is communicated with a water inlet pipe 10, and sewage enters the anaerobic tank 2 through the water inlet pipe 10; the anaerobic tank 2 is communicated with the anoxic tank 3 through a first connecting pipe, and the anoxic tank 3 is communicated with the aerobic tank 4 through a second connecting pipe; the first connecting pipe, the second connecting pipe and the third connecting pipe are driven by a water pump; stirrers 8 are arranged in the anaerobic tank 2 and the anoxic tank 3 and used for preventing sludge from sinking to the bottom and simultaneously manufacturing and forming an anaerobic environment and an anoxic environment, anaerobic tank filler is arranged in the anaerobic tank 2, and anoxic tank filler is arranged in the anoxic tank 3; a plurality of aeration pipes 7 are arranged in the aerobic tank 4, a plurality of aeration holes are formed in the aeration pipes 7, an air pump is arranged outside the aerobic tank 4 and communicated with the aeration pipes 7 and used for providing gas for the aeration pipes 7 and improving the oxygen content in the aerobic tank 4, and an aerobic tank filler is also arranged in the aerobic tank 4.

Referring to fig. 1 to 4, the working process of the sewage treatment apparatus based on the AAO process of the present embodiment is as follows:

the method comprises the following steps: discharging sewage into the anaerobic tank 2 through a water inlet pipe 10, starting a lifting motor, driving a lifting screw 53 to rotate by an output shaft of the lifting motor so as to drive a fixed frame 51 to slide on a sliding rod 52, driving a filter screen 56 to move upwards by the fixed frame 51 so as to drive filtered wastes on the filter screen 56, starting a moving motor, driving a moving screw 58 to rotate by an output shaft of the moving motor, driving a U-shaped frame 54 to move by the rotating of the moving screw 58, removing the wastes on the surface of the filter screen 56 by a cleaning brush 55 at the bottom of the U-shaped frame 54, and discharging the wastes from a discharging pipe 9;

step two: organic matter and nitrogen phosphorus in sewage are got rid of after anaerobic tank 2, oxygen deficiency pond 3 and good oxygen pond 4 through corresponding reaction to sewage to flow into collection box 11 in, collection box 11 is with mud sedimentation separation, and the supernatant is discharged from drain pipe 12 of collection box 11 one side, and the mud of collection box 11 bottom discharges to in the anaerobic tank 2 through mud recovery pipe 13.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like 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 directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the utility model. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. A sewage treatment device based on an AAO (anaerobic-anoxic-oxic) process comprises a treatment tank (1) and is characterized in that the treatment tank (1) is internally divided into an anaerobic tank (2), an anoxic tank (3) and an aerobic tank (4) through a first partition plate (61) and a second partition plate (62), the anoxic tank (3) is arranged between the anaerobic tank (2) and the aerobic tank (4), and the top of the anaerobic tank (2) is provided with a removing mechanism (5) for removing garbage in sewage; clear away mechanism (5) including filter screen (56) that are used for filtering waste in the sewage and be used for cleaning brush (55) on filter screen (56) surface, filter screen (56) fixed mounting is on fixed frame (51), cleaning brush (55) fixed mounting is in U type frame (54) bottom, sliding tray (57) internal rotation that one side was seted up on fixed frame (51) is installed and is removed lead screw (58), U type frame (54) one side threaded connection is on removing lead screw (58), and opposite side slidable mounting is on fixed frame (51), it sets up collection box (11) to handle case (1) one side.

2. The sewage treatment device based on AAO process according to claim 1, wherein one side of the fixed frame (51) is connected to a lifting screw (53) in a threaded manner, the lifting screw (53) is rotatably installed in a first groove formed on a first partition plate (61), the other side of the fixed frame (51) is slidably installed on a sliding rod (52), the sliding rod (52) is fixedly installed in a second groove formed on the inner wall of the treatment box (1), and an output shaft of a lifting motor fixedly installed on the top of the treatment box (1) is fixedly connected with the end part of the lifting screw (53).

3. The sewage treatment device based on AAO process according to claim 1, wherein the output shaft of the moving motor fixedly installed in the fixed frame (51) is fixedly connected with the end of the moving screw rod (58).

4. The sewage treatment device based on AAO process according to claim 1, wherein the recycling tank (11) is communicated with the aerobic pool (4) on the treatment tank (1) through a third connecting pipe, a drain pipe (12) is arranged on one side of the recycling tank (11), and the bottom of the recycling tank (11) is communicated with the anaerobic pool (2) on the treatment tank (1) through a sludge recycling pipe (13).

5. The AAO process-based sewage treatment plant according to claim 1, wherein a discharge pipe (9) arranged at one side of the treatment tank (1) is communicated with an anaerobic tank (2), and a water inlet pipe (10) is communicated with one side of the anaerobic tank (2).

6. The sewage treatment device based on the AAO process according to claim 1, wherein the anaerobic tank (2) is communicated with the anoxic tank (3) through a first connecting pipe, and the anoxic tank (3) is communicated with the aerobic tank (4) through a second connecting pipe.

7. The AAO process-based sewage treatment plant according to claim 1, wherein the anaerobic tank (2) and the anoxic tank (3) are both provided with a stirrer (8), and a plurality of aeration pipes (7) arranged in the aerobic tank (4) are both provided with a plurality of aeration holes.