Anti-blocking biological aeration municipal sewage treatment equipment

Abstract

The utility model relates to the technical field of sewage treatment, in particular to anti-blocking bio-aeration municipal sewage treatment equipment, which comprises a main body, a filter tank and an aeration tank, the filter tank is arranged on one side in the main body, the bottom of one side of the filter tank is communicated with a main water inlet, a blocking net is arranged in an inner cavity of the filter tank, and the aeration tank is communicated with the main water inlet. The top of the filter tank is communicated with a backwashing water inlet, the bottom of the filter tank is provided with a first precipitation tank, the other side of the interior of the main body is provided with an aeration tank, the top of the aeration tank is provided with a rotating shaft, two sides of the rotating shaft are fixedly connected with stirring rods, and the ends of the stirring rods are detachably connected with scraping plates. The bottom of the rotating shaft is fixedly connected with stirring blades, the bottom of the aeration tank is communicated with an air inlet, the top of the air inlet is fixedly connected with an aeration device, and a second precipitation tank is arranged at the bottom of the aeration tank. According to the utility model, the barrier plate is arranged, the aeration system is optimized, and the cleaning device is arranged, so that the operation efficiency of equipment is improved, and blockage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to an anti-clogging biological aeration municipal sewage treatment device. Background Art

[0002] With the acceleration of urbanization, sewage treatment facilities are facing increasingly severe challenges of blockage. As a commonly used sewage treatment equipment, biological aeration municipal sewage treatment equipment mainly works by decomposing organic matter in sewage through microorganisms to achieve the purpose of purifying water quality.

[0003] However, in actual operation, biological aeration municipal sewage treatment equipment often becomes clogged, which not only affects the normal operation of the equipment, but also reduces the treatment efficiency and even causes water quality deterioration.

[0004] After searching, a utility model patent with publication number CN214115044U specifically discloses an aerated biological filter device for improving the quality of municipal sewage, including a filter tank, a bracket is fixedly connected to the upper part of the filter tank, a movable opening is vertically opened in the middle of the bracket, a servo motor is fixedly installed horizontally to the left on the right side of the upper part of the bracket, and a threaded screw is fixedly connected horizontally to the left at the driving end of the servo motor; a support arm is located in the movable opening and moves vertically downward.

[0005] The above patent only seals the aeration holes on the aeration pipe by providing a sealing sleeve to avoid the problem of dirt blocking the aeration holes. It cannot fully solve the problem of numerous pipe blockages in the equipment and is not convenient for handling suspended matter and floating debris in sewage.

[0006] Therefore, it is necessary to invent an anti-clogging biological aeration municipal sewage treatment equipment to solve the above problems. Utility Model Content

[0007] The purpose of the utility model is to provide an anti-clogging biological aeration municipal sewage treatment equipment, which intercepts suspended matter and floating debris by setting a baffle, optimizing the aeration system and setting a cleaning device, thereby improving the operating efficiency of the equipment and reducing the occurrence of blockage, so as to solve the problem that the existing technology cannot fully solve the problem of numerous pipe blockages in the equipment and is inconvenient to handle suspended matter and floating debris in the sewage.

[0008] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a kind of anti-clogging biological aeration municipal sewage treatment equipment, comprising a main body, a filter tank and an aeration tank, one side of the interior of the main body is a filter tank, the bottom of one side of the filter tank is connected to a main water inlet, the inner cavity of the filter tank is provided with a blocking net, the top of the filter tank is connected to a backwash water inlet, the bottom of the filter tank is provided with a first sedimentation tank, the bottom of the first sedimentation tank is connected to a first sewage outlet, a one-way valve is provided on the inner wall of the other side of the filter tank, a rotating shaft is provided at the top of the aeration tank, a motor is fixedly installed on one side of the top of the aeration tank, the rotating shaft is driven by the motor, stirring rods are fixedly connected on both sides of the rotating shaft, scrapers are detachably connected at the ends of the stirring rods, stirring blades are fixedly connected to the bottom of the rotating shaft, an air inlet is connected to the bottom of the aeration tank, an aeration device is fixedly connected to the top of the air inlet, a second sedimentation tank is provided at the bottom of the aeration tank, the bottom of the second sedimentation tank is connected to a second sewage outlet, and a water outlet is connected to one side of the top of the aeration tank.

[0009] Preferably, the first sedimentation tank and the second sedimentation tank are both funnel-shaped with smooth inner walls, and the one-way valve is connected from the filtration tank to the aeration tank in one direction.

[0010] Preferably, a driving gear is fixedly connected to the end of the motor, a driven gear is fixedly connected to the top of the rotating shaft, and the driving gear is meshingly connected to the driven gear.

[0011] Preferably, a first limiting groove is provided on the top of the aeration tank, a first fixed block is welded on the top of the rotating shaft, the first limiting groove is slidably connected to the first fixed block, a second limiting groove is provided in the middle of the inner cavity of the aeration tank, a second fixed block is provided in the middle of the rotating shaft, and the second limiting groove is slidably connected to the second fixed block.

[0012] Preferably, a brush is provided on one side of the scraper, and the brush cooperates with the inner wall of the aeration tank.

[0013] Preferably, the aeration device is spherical and has holes evenly arranged on its surface, and a backwash water pump is arranged inside the water outlet 15 .

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. Optimize the equipment structure: By adding the first and second sewage outlets, the water can be quickly discharged during backwashing, and the suspended matter and detached biofilm in the sewage can be quickly cleaned to reduce the occurrence of blockage.

[0016] 2. Improve the aeration system: Through the spherical design and microporous structure of the aeration system, sludge is not easy to adhere to its surface and it is not easy to get clogged. The stirring blades increase the air-liquid contact area while driving the flow of sewage near the aeration device, reducing the occurrence of blockage.

[0017] 3. Increase pre-treatment: Although the water entering the filter tank has been pre-treated, there are still many suspended substances in it, and they are relatively coarse, especially domestic sewage contains a lot of viscous substances, and there are many plastic film fragments mixed in the water. By setting a baffle in the filter tank, the suspended matter and impurities are intercepted, reducing the occurrence of blockages in many pipes of the equipment.

[0018] 4. Set up a cleaning device: By setting up a backwash water inlet, the equipment can be cleaned regularly, and by setting up a scraper, the inner wall of the aeration tank can be cleaned to improve the equipment processing efficiency and prevent blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic cross-sectional diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0022] Figure 3 For the utility model Figure 1 The enlarged structural diagram at A in the middle;

[0023] Figure 4 This is a schematic diagram of the connection structure between the stirring rod and the scraper of the utility model;

[0024] Figure 5 It is a schematic diagram of the perforation structure of the aeration device of the utility model.

[0025] Description of reference numerals:

[0026] 1. Main body; 2. Filter tank; 3. Aeration tank; 4. Main water inlet; 5. Blocking net; 6. Backwash water inlet; 7. First sedimentation tank; 8. First sewage outlet; 9. One-way valve; 10. Rotating shaft; 11. Motor; 12. Air inlet; 13. Aeration device; 14. Second sedimentation tank; 15. Water outlet; 301. First limiting groove; 302. Second limiting groove; 1001. First fixed block; 1002. Second fixed block; 1003. Stirring rod; 1004. Scraper; 1005. Stirring blade; 1101. Driving gear; 1006. Driven gear; 1007. Brush; 1301. Perforation; 1401. Second sewage outlet. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The utility model provides Figure 1-5 The anti-clogging biological aeration municipal sewage treatment equipment shown in the figure includes a main body 1, a filter tank 2 and an aeration tank 3. One side of the main body 1 is the filter tank 2. The bottom of one side of the filter tank 2 is connected to a main water inlet 4 for sewage to enter the filter tank 2. The inner cavity of the filter tank 2 is provided with a blocking net 5 to intercept suspended matter and impurities in the sewage to prevent clogging of the pipeline in the equipment. The top of the filter tank 2 is connected to a backwashing water inlet 6 to facilitate regular cleaning of the filter tank 2. The bottom of the filter tank 2 is provided with a first sedimentation tank 7 for accumulating suspended matter and impurities. During flushing, the suspended matter and impurities are discharged from a first sewage outlet 8 connected to the bottom of the first sedimentation tank 7.

[0029] A one-way valve 9 is provided on the inner wall of the other side of the filter tank 2. The one-way valve 9 is connected from the filter tank 2 to the aeration tank 3 in one direction, so that sewage will not flow back when the filter tank 2 and the aeration tank 3 are cleaned. A rotating shaft 10 is provided on the top of the aeration tank 3. A motor 11 is fixedly installed on one side of the top of the aeration tank 3. The rotating shaft 10 is driven by the motor 11. A driving gear 1101 is fixedly connected to the end of the motor 11. A driven gear 1006 is fixedly connected to the top of the rotating shaft 10. The driving gear 1101 is meshed and connected with the driven gear 1006 to drive the rotating shaft 10 to rotate.

[0030] A first limiting groove 301 is provided on the top of the aeration tank 3, a first fixing block 1001 is welded on the top of the rotating shaft 10, the first limiting groove 301 is slidably connected with the first fixing block 1001, a second limiting groove 302 is provided in the middle of the inner cavity of the aeration tank 3, a second fixing block 1002 is provided in the middle of the rotating shaft 10, and the second limiting groove 302 is slidably connected with the second fixing block 1002, thereby improving the stability of the equipment structure;

[0031] Stirring rods 1003 are fixedly connected to both sides of the rotating shaft 10. The ends of the stirring rods 1003 are detachably connected to scrapers 1004, which are convenient for regular cleaning and replacement of brushes 1007. A brush 1007 is arranged on one side of the scraper 1004. The brush 1007 cooperates with the inner wall of the aeration tank 3 to clean the suspended matter and impurities attached to the inner wall of the aeration tank 3, prevents equipment clogging, and drives the wastewater to flow so that organic matter in the wastewater is aerobically degraded. The bottom of the rotating shaft 10 is fixedly connected to a stirring blade 1005 to increase the gas-liquid contact area, improve the oxygen utilization rate, drive the sewage near the aeration device 13 to flow, and prevent the aeration device 13 from being blocked;

[0032] An air inlet 12 is connected to the bottom of the aeration tank 3, and an aeration device 13 is fixedly connected to the top of the air inlet 12. The aeration device 13 is spherical and has perforations 1301 evenly arranged on the surface. The spherical design and microporous structure make it difficult for sludge to adhere to its surface, difficult to be blocked, and stable in operation. A second sedimentation tank 14 is arranged at the bottom of the aeration tank 3, and the bottom of the second sedimentation tank 14 is connected to a second sewage outlet 1401, which is convenient for settling suspended matter and newly formed biological solids in sewage. The first sedimentation tank 7 and the second sedimentation tank 14 are both funnel-shaped and have smooth inner walls, which are convenient for timely discharge of pollutants. A water outlet 15 is connected to one side of the top of the aeration tank 3, and a backwashing water pump is arranged inside the water outlet 15, which is convenient for backwashing the aeration tank 3 and reducing equipment costs.

[0033] How this utility works:

[0034] Refer to the instruction manual Figure 1-5 When the equipment is activated, sewage enters the filter tank 2 from the main water inlet 4 on one side of the main body 1. When the sewage passes through the blocking net 5, the suspended matter and impurities contained in the sewage are blocked and accumulated in the first sedimentation tank 7. When the filter tank 2 needs to be cleaned, the main water inlet 4 is closed first, and the first sewage outlet 8 is opened to quickly precipitate and empty the sewage, so as to discharge the suspended matter and newly formed biological solids in the sewage. Then the backwashing water inlet 6 is opened, and the backwashing water flows into the filter tank 2, and the suspended matter and impurities attached to the blocking net 5 and the sediment in the first sedimentation tank 7 are washed away and discharged from the first sewage outlet 8. The backwashing water used in the backwashing water inlet 6 is the treated qualified water.

[0035] When sewage enters the aeration tank 3 through the one-way valve 9, the air inlet 12 at the bottom of the aeration tank 3 is opened first, and air enters the aeration tank 3 through the perforations 1301 on the surface of the aeration device 13, so that the microorganisms in the aeration tank 3 can obtain sufficient oxygen. Then the motor 11 is started, and the motor 11 drives the driven gear 1006 to rotate through the driving gear 1101 at the end, thereby driving the rotating shaft 10 to rotate. The rotating shaft 10 is stable under the restrictions of the first limiting groove 301 and the first fixed block 1001 and the second limiting groove 302 and the second fixed block 1002. During the fixed operation, the stirring blades 1005 at the bottom of the rotating shaft 10 rotate simultaneously to improve the gas-liquid mixing efficiency. During the rotation process, the sewage near the aeration device 13 is driven to flow to reduce the blockage of the perforations 1301 on its surface. The rotating shaft 10 simultaneously drives the stirring rod 1003 and the scraper 1004 to rotate, further increasing the gas-liquid contact area. The brush 1007 on the scraper 1004 cooperates with the inner wall of the aeration tank 3 to remove the suspended matter and impurities attached to its surface, thereby improving the efficiency of the equipment in treating sewage. The treated sewage is discharged from the outlet 15.

[0036] As the filtration proceeds, due to the increasing amount of newly generated biomass in the aeration tank 3, some impurities accumulate in the second sedimentation tank 14 at the bottom. The aeration tank 3 needs to be backwashed to restore its processing capacity. The backwashing of the aeration tank 3 adopts an air-water combined backwashing design. The backwashing water is treated water that meets the standards and flows in from the water outlet 15 through the backwashing water pump. The backwashing air is shared with the aeration device 13 at the bottom of the aeration tank 3. During backwashing, the one-way valve 9 is first closed, and the second sewage outlet 1401 is opened to quickly evacuate the aeration tank 3, and then air flushing is performed separately, and then air and water are used for combined flushing, and finally water rinsing is performed. The flushed waste is discharged from the aeration tank 3 through the second sewage outlet 1401.

[0037] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An anti-clogging biological aeration municipal sewage treatment equipment, characterized by: It comprises a main body (1) for sewage treatment; A filter tank (2) is used to intercept suspended matter in sewage and is arranged on one side of the main body (1); the bottom of one side of the filter tank (2) is connected to a main water inlet (4); the inner cavity of the filter tank (2) is provided with a blocking net (5); the top of the filter tank (2) is connected to a backwash water inlet (6); the bottom of the filter tank (2) is provided with a first sedimentation tank (7); the bottom of the first sedimentation tank (7) is connected to a first sewage outlet (8); and the inner wall of the other side of the filter tank (2) is provided with a one-way valve (9); An aeration tank (3) is used for aeration and oxidation treatment of sewage and is arranged at the other side of the main body (1). A rotating shaft (10) is arranged at the top of the aeration tank (3). A motor (11) is fixedly installed at one side of the top of the aeration tank (3). The rotating shaft (10) is driven by the motor (11). Stirring rods (1003) are fixedly connected to both sides of the rotating shaft (10). A scraper (1004) is detachably connected to the end of the stirring rod (1003). A stirring blade (1005) is fixedly connected to the bottom of the rotating shaft (10). An air inlet (12) is connected at the bottom of the aeration tank (3). An aeration device (13) is fixedly connected to the top of the air inlet (12). A second sedimentation tank (14) is arranged at the bottom of the aeration tank (3). A second sewage outlet (1401) is connected at the bottom of the second sedimentation tank (14). A water outlet (15) is connected at one side of the top of the aeration tank (3).

2. The anti-clogging biological aeration municipal sewage treatment equipment according to claim 1, characterized in that: The first sedimentation tank (7) and the second sedimentation tank (14) are both funnel-shaped and have smooth inner walls, and the one-way valve (9) is connected from the filter tank (2) to the aeration tank (3) in one direction.

3. The anti-clogging biological aeration municipal sewage treatment equipment according to claim 1, characterized in that: A driving gear (1101) is fixedly connected to the end of the motor (11), a driven gear (1006) is fixedly connected to the top of the rotating shaft (10), and the driving gear (1101) is meshingly connected to the driven gear (1006).

4. The anti-clogging biological aeration municipal sewage treatment equipment according to claim 1, characterized in that: A first limiting groove (301) is provided on the top of the aeration tank (3); a first fixing block (1001) is welded on the top of the rotating shaft (10); the first limiting groove (301) is slidably connected to the first fixing block (1001); a second limiting groove (302) is provided in the middle of the inner cavity of the aeration tank (3); a second fixing block (1002) is provided in the middle of the rotating shaft (10); the second limiting groove (302) is slidably connected to the second fixing block (1002).

5. The anti-clogging biological aeration municipal sewage treatment equipment according to claim 1, characterized in that: Brushes (1007) are evenly arranged on one side of the scraper (1004), and the brushes (1007) cooperate with the inner wall of the aeration tank (3).

6. The anti-clogging biological aeration municipal sewage treatment equipment according to claim 1, characterized in that: The aeration device (13) is spherical and has perforations (1301) evenly arranged on its surface, and a backwashing water pump is arranged inside the water outlet (15).

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