External MBR anaerobic reactor

Abstract

The utility model discloses an external MBR (Membrane Biological Reactor) anaerobic reactor and relates to the technical field of sewage treatment. The sewage treatment device comprises a sewage treatment box and a box door movably installed on the front end face of the sewage treatment box through a hinge, a partition plate is fixedly arranged above the inner wall of the sewage treatment box, a filter plate is installed at the edge of one side of the upper surface of the partition plate, a sewage circulation box is installed above one side wall of the sewage treatment box, and a cleaning assembly is arranged in the sewage treatment box. And an impurity removal assembly is arranged above the partition plate. The outer wall of the membrane bioreactor is washed through the cleaning assembly, the cleaning assembly is simple in structure, each part of the membrane bioreactor can be washed through rotation of the spray pipe, the washing effect is good, impurities in sewage are blocked and filtered through the filter plate, meanwhile, the surface of a partition plate and the surface of the filter plate can be cleaned through a scraper brush in the impurity removal assembly, and the cleaning effect is good. Impurities such as sludge are prevented from blocking the filter plate and affecting normal use of the device.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and in particular relates to an external MBR anaerobic reactor. Background Technology

[0002] Anaerobic membrane bioreactor (AnMBR) is a novel water treatment technology that combines membrane separation technology with anaerobic biological treatment units. The AnMBR process is divided into two stages: anaerobic digestion and membrane separation. The anaerobic digestion stage is no different from the traditional anaerobic treatment process. The main difference between the membrane separation stage and aerobic MBR is that aeration and purging of the membrane surface are not used. This technology has advantages such as low investment, low energy consumption, recoverable biogas energy, high load, low sludge production, and resistance to shock loads. Introducing membrane modules can also improve the biochemical effect, and the produced water quality is good and stable.

[0003] A search revealed that publication number CN216808307U, with an application date of 2021.10.09, discloses an external MBR anaerobic reactor, belonging to the field of wastewater treatment technology. The reactor includes a wastewater treatment tank, with a partition plate fixedly installed at the top of the tank. The partition plate divides the internal space of the tank into a wastewater effluent chamber and a wastewater anaerobic reaction chamber from top to bottom. Two sets of three-phase separators are fixedly installed at the lower end of the partition plate.

[0004] However, it still has the following drawbacks in practical use:

[0005] 1. Existing external MBR anaerobic reactors are flushed with wastewater external circulation components during use. However, these flushing components are complex in structure, costly, and can only flush two sides of the membrane bioreactor, resulting in poor flushing effect.

[0006] 2. Existing external MBR anaerobic reactors use a circulating water pump to directly pump out wastewater for flushing. However, this method can lead to blockages due to impurities such as sludge in the wastewater affecting the normal operation of various equipment and components. Therefore, we provide an external MBR anaerobic reactor to solve the aforementioned problems. Utility Model Content

[0007] The purpose of this invention is to provide an external MBR anaerobic reactor. By setting up a cleaning component to rinse the outer wall of the membrane bioreactor, the cleaning component has a simple structure and low cost. The nozzle can be rotated to thoroughly rinse all parts of the membrane bioreactor, thereby significantly improving the rinsing effect. In addition, the filter plate is used to block and filter impurities in the wastewater. At the same time, the scraper brush in the impurity removal component can clean the surface of the partition plate and the surface of the filter plate, so as to avoid sludge and other impurities clogging the filter plate and affecting the normal use of the device.

[0008] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0009] This utility model is an external MBR anaerobic reactor, including a sewage treatment tank and a door that is movably installed on its front end via a hinge. A partition is fixed on the upper inner wall of the sewage treatment tank, and a filter plate is installed on one edge of the upper surface of the partition. A sewage circulation tank is installed on the upper side wall of the sewage treatment tank. A membrane bioreactor is installed in the middle of the inner side wall of the sewage treatment tank. A cleaning component is installed inside the sewage treatment tank, and a dirt removal component is installed above the partition.

[0010] The cleaning assembly includes a drive housing mounted on the inner wall of one side of the wastewater treatment tank, and a hollow shaft rotatably mounted in bearings on both sides of the drive housing, with a diverter plate provided at one end of the hollow shaft;

[0011] The impurity removal assembly includes a motor installed on the rear end of the sewage treatment tank and a drive gear disk installed on the motor output shaft. A driven gear disk is meshed on one side of the drive gear disk, and a threaded rod is installed at the center of the front end face of the driven gear disk.

[0012] The present invention is further configured such that a sewage pipe is provided at the front end of one side wall of the sewage treatment tank, a first sewage outlet is provided at the bottom of the other side wall of the sewage treatment tank, and a turbulence component is provided on one side wall of the sewage treatment tank.

[0013] The present invention is further configured such that a circulation pump is provided above the sewage circulation tank, and a second sewage outlet is provided above the rear end face of the sewage treatment tank.

[0014] The present invention is further configured such that a water inlet pipe is provided on one side of the top of the drive housing, a water outlet pipe is provided at the center of the bottom of the drive housing, and a branch pipe is provided on the outer wall of the water outlet pipe.

[0015] The present invention is further configured such that the other end of the branch pipe is rotatably connected to the inside of one end of the hollow shaft, and an impeller is sleeved on the outer wall of the hollow shaft.

[0016] The present invention is further configured such that a nozzle is provided at the top and bottom of the outer wall on the other side of the flow divider, and nozzles are evenly spaced on the outer wall of the nozzle.

[0017] The present invention is further configured such that the front end of the threaded rod passes through the bearing on the rear end face of the sewage treatment tank and the threaded hole on the middle support plate in sequence, and is connected to the bearing on the front end face inside the sewage treatment tank. The bottom end of the middle support plate is fixed at the center of the top of the folding plate, and a scraper brush is provided at the bottom of the folding plate.

[0018] The present invention is further configured such that side support plates are fixedly provided on both sides of the top of the folding plate, the side support plates are slidably sleeved on the outer wall of the guide rod, and the front and rear ends of the guide rod are fixed on the inner wall of the sewage treatment tank.

[0019] This utility model has the following beneficial effects:

[0020] 1. This utility model, by setting up a cleaning component, uses sewage impact to rotate the hollow shaft and impeller, causing the diversion plate, two sets of nozzles and spray nozzles to rotate, and sewage is sprayed out from the nozzles on the rotating nozzles to rinse the outer wall of the membrane bioreactor. This cleaning component has a simple structure and low cost. At the same time, the rotation of the nozzles can rinse all parts of the membrane bioreactor, resulting in good rinsing effect. It solves the problem that existing external MBR anaerobic reactors use sewage external circulation components to rinse the membrane bioreactor, but the rinsing components have a complex structure, high cost, and can only rinse two sides of the membrane bioreactor, resulting in poor rinsing effect.

[0021] 2. This utility model, by setting up filter plates and impurity removal components, uses filter plates to block and filter impurities in wastewater. At the same time, the motor drives the baffle plate to move, so that the scraper brush cleans the surface of the baffle plate and the surface of the filter plate, and discharges sludge and other impurities from the second sewage outlet. This avoids sludge and other impurities clogging the filter plates and affecting the normal use of the device. It solves the problem that in the existing external MBR anaerobic reactor, wastewater is directly pumped out and rinsed by a circulating water pump. However, in this method, sludge and other impurities in the wastewater may affect the normal use of various equipment and components and cause blockages. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0023] Figure 1 This is a schematic diagram of an external MBR anaerobic reactor.

[0024] Figure 2 This is a cross-sectional view of an external MBR anaerobic reactor.

[0025] Figure 3 Schematic diagram of the cleaning component Figure 1 .

[0026] Figure 4 Schematic diagram of the cleaning component Figure 2 .

[0027] Figure 5 This is a structural diagram of the filter plate and impurity removal components.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 100-Wastewater treatment tank, 101-Door, 102-Wastewater pipe, 103-First discharge outlet, 104-Turbulent flow assembly, 105-Baffle plate, 105a-Filter plate, 106-Wastewater circulation tank, 106a-Membrane bioreactor, 107-Circulation pump, 108-Second discharge outlet, 200-Cleaning assembly, 201-Drive housing, 201a-Inlet pipe, 201b-Outlet pipe. 201c-Branch pipe, 202-Hollow shaft, 202a-Impeller, 203-Diverter plate, 204-Spray pipe, 204a-Spray head, 300-Impuring assembly, 301-Motor, 301a-Drive gear plate, 302-Threaded rod, 302a-Driven gear plate, 303-Folding plate, 303a-Scraper brush, 303b-Central support plate, 303c-Side support plate, 304-Guide rod. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0031] Example 1

[0032] Please see Figures 1 to 4 This utility model is an external MBR anaerobic reactor, including a wastewater treatment tank 100 and a door 101 that is movably installed on its front end via a hinge. A partition 105 is fixedly installed on the upper inner wall of the wastewater treatment tank 100. A filter plate 105a is installed on one edge of the upper surface of the partition 105. A wastewater circulation tank 106 is installed on the upper side wall of the wastewater treatment tank 100. A membrane bioreactor 106a is installed in the middle of the inner side wall of the wastewater treatment tank 100. A cleaning component 200 is provided inside the wastewater treatment tank 100. The cleaning component 200 includes a drive housing 201 installed on the inner side wall of the wastewater treatment tank 100 and a hollow shaft 202 rotatably installed in the bearings on both sides of the drive housing 201. A diversion plate 203 is provided at one end of the hollow shaft 202.

[0033] Specifically, a sewage pipe 102 is provided at the front end of one side wall of the sewage treatment tank 100, a first sewage outlet 103 is provided at the bottom of the other side wall of the sewage treatment tank 100, and a turbulence component 104 is provided on one side wall of the sewage treatment tank 100; a circulation pump 107 is provided above the sewage circulation tank 106, and a second sewage outlet 108 is provided above the rear end face of the sewage treatment tank 100; an inlet pipe 201a is provided on one side of the top of the drive housing 201, an outlet pipe 201b is provided at the center of the bottom of the drive housing 201, and a branch pipe 201c is provided on the outer wall of the outlet pipe 201b; the other end of the branch pipe 201c is rotatably connected to the inside of one end of the hollow shaft 202, and an impeller 202a is sleeved on the outer wall of the hollow shaft 202; a spray pipe 204 is provided at the top and bottom of the other side outer wall of the diverter plate 203, and nozzles 204a are evenly spaced on the outer wall of the spray pipe 204.

[0034] Furthermore, the partition 105 divides the interior of the sewage treatment tank 100 into two spaces. The turbulence assembly 104, circulation pump 107, sewage circulation tank 106, membrane bioreactor 106a, etc. are all existing technologies, so they will not be described in detail here. The internal channel of the hollow shaft 202 is connected to the branch pipe 201c and the diversion plate 203. The impeller 202a is driven to rotate the hollow shaft 202 by the impact of sewage. Two sets of nozzles 204 are placed outside the membrane bioreactor 106a. The sewage circulation tank 106 is equipped with a drainage pipe, which is connected to the bottom of the outlet pipe 201b.

[0035] The operation process of this embodiment is as follows: Sewage is introduced into the anaerobic reaction chamber inside the sewage treatment tank 100 through the sewage pipe 102. Then, the turbulence assembly 104 and the circulation pump 107 are used. The blower in the turbulence assembly 104 extracts air from above the baffle 105 and sprays it into the sewage, which disperses the hydrolyzed acidified sludge and increases the relative contact efficiency with the sewage. The circulation pump 107 operates to extract the sewage filtered by the filter plate 105a on the baffle 105. The sewage enters the drive housing 201 through the inlet pipe 201a. The extracted sewage impacts the impeller 202a, causing the impeller to... Wheel 202a drives hollow shaft 202 and its end diverter plate 203 to rotate. Wastewater discharged from drive housing 201 enters hollow pipe through outlet pipe 201b and branch pipe 201c. After being diverted by diverter plate 203, it enters two sets of spray pipes 204 and is finally sprayed from multiple nozzles 204a to the outer wall of membrane bioreactor 106a, continuously rinsing the outer wall of membrane bioreactor 106a. This cleaning component 200 has a simple structure and low cost. At the same time, the rotation of spray pipes 204 can rinse various parts of membrane bioreactor 106a, resulting in good rinsing effect.

[0036] Example 2

[0037] Please see Figure 2 and Figure 5 Based on Embodiment 1, unlike the first embodiment, a cleaning component 300 is provided. The cleaning component 300 includes a motor 301 installed on the rear end face of the sewage treatment tank 100, and an active gear 301a installed on the output shaft of the motor 301. A driven gear 302a is meshed on one side of the active gear 301a, and a threaded rod 302 is installed at the center of the front end face of the driven gear 302a. This solves the problem that in the existing external MBR anaerobic reactor, sewage is directly pumped out and flushed by a circulating water pump during use. However, in this method, impurities such as sludge in the sewage may affect the normal use of various equipment and components, and cause blockages.

[0038] Specifically, the front end of the threaded rod 302 passes through the bearing on the rear end face of the sewage treatment tank 100 and the threaded hole on the middle support plate 303b, and is connected to the bearing on the front end face inside the sewage treatment tank 100. The bottom end of the middle support plate 303b is fixed at the center of the top of the folding plate 303. A scraper brush 303a is provided at the bottom of the folding plate 303. Side support plates 303c are fixed on both sides of the top of the folding plate 303. The side support plates 303c are slidably sleeved on the outer wall of the guide rod 304. The front and rear ends of the guide rod 304 are fixed on the inner wall of the sewage treatment tank 100.

[0039] Furthermore, the rack on the outer wall of the driving gear 301a meshes with the rack on the outer wall of the driven gear 302a, which plays a role in transmission. The external thread on the outer wall of the threaded rod 302 is screwed into the threaded hole on the middle support plate 303b, so the threaded rod 302 can drive the folding plate 303 to move when it rotates.

[0040] The operation process of this embodiment is as follows: Sewage is stored above the partition 105. To prevent impurities such as sludge in the sewage from being sucked into the circulation pump 107 and sewage circulation tank 106, affecting the normal operation of the device, the impurities in the sewage are blocked and filtered by the filter plate 105a. Simultaneously, the motor 301 (which can run in both forward and reverse directions) is started. The output shaft of the motor 301 rotates, driving the active gear disk 301a to rotate. The rack on the outer wall of the active gear disk 301a meshes with the rack on the outer wall of the driven gear disk 302a. Therefore, the active gear disk... When 301a rotates, it drives the driven gear plate 302a to rotate, and causes the threaded rod 302 to rotate synchronously. The external thread on the outer wall of the threaded rod 302 is screwed into the threaded hole on the middle support plate 303b. Therefore, when the threaded rod 302 rotates, it will drive the folding plate 303 to move under the action of the thread. The scraper brush 303a cleans the surface of the partition plate 105 and the surface of the filter plate 105a, and discharges sludge and other impurities from the second drain port 108, so as to avoid sludge and other impurities clogging the filter plate 105a and affecting the normal use of the device.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. An external MBR anaerobic reactor, comprising a wastewater treatment tank (100) and a door (101) hinged to its front end, wherein a partition (105) is fixedly provided on the upper inner wall of the wastewater treatment tank (100), a filter plate (105a) is installed on one edge of the upper surface of the partition (105), a wastewater circulation tank (106) is installed on the upper side wall of the wastewater treatment tank (100), and a membrane bioreactor (106a) is installed in the middle of one inner wall of the wastewater treatment tank (100), characterized in that: The sewage treatment tank (100) is equipped with a cleaning component (200) inside, and a dirt removal component (300) is provided above the partition (105); The cleaning component (200) includes a drive housing (201) installed on the inner wall of one side of the sewage treatment tank (100), and a hollow shaft (202) rotatably installed in the bearings on both sides of the drive housing (201), with a diverter plate (203) provided at one end of the hollow shaft (202). The impurity removal assembly (300) includes a motor (301) installed on the rear end face of the sewage treatment tank (100) and a drive gear (301a) installed on the output shaft of the motor (301). A driven gear (302a) is meshed on one side of the drive gear (301a), and a threaded rod (302) is installed at the center of the front end face of the driven gear (302a).

2. An external MBR anaerobic reactor according to claim 1, characterized in that, A sewage pipe (102) is provided at the front end of one side wall of the sewage treatment tank (100), a first sewage outlet (103) is provided at the bottom of the other side wall of the sewage treatment tank (100), and a turbulence component (104) is provided on one side wall of the sewage treatment tank (100).

3. An external MBR anaerobic reactor according to claim 2, characterized in that, A circulation pump (107) is provided above the sewage circulation tank (106), and a second sewage outlet (108) is provided above the rear end face of the sewage treatment tank (100).

4. An external MBR anaerobic reactor according to claim 1, characterized in that, A water inlet pipe (201a) is provided on one side of the top of the drive housing (201), and a water outlet pipe (201b) is provided at the center of the bottom of the drive housing (201). A branch pipe (201c) is provided on the outer wall of the water outlet pipe (201b).

5. An external MBR anaerobic reactor according to claim 4, characterized in that, The other end of the branch pipe (201c) is rotatably connected to the inside of one end of the hollow shaft (202), and an impeller (202a) is sleeved on the outer wall of the hollow shaft (202).

6. An external MBR anaerobic reactor according to claim 5, characterized in that, The top and bottom of the other side outer wall of the flow divider (203) are provided with nozzles (204), and nozzles (204a) are evenly spaced on the outer wall of the nozzles (204).

7. An external MBR anaerobic reactor according to claim 1, characterized in that, The front end of the threaded rod (302) passes through the bearing on the rear end face of the sewage treatment tank (100) and the threaded hole on the middle support plate (303b) in sequence, and is connected to the bearing on the front end face inside the sewage treatment tank (100). The bottom end of the middle support plate (303b) is fixed at the top center of the folding plate (303), and a scraper brush (303a) is provided at the bottom of the folding plate (303).

8. An external MBR anaerobic reactor according to claim 7, characterized in that, Side support plates (303c) are fixed on both sides of the top of the folding plate (303). The side support plates (303c) are slidably sleeved on the outer wall of the guide rod (304). The front and rear ends of the guide rod (304) are fixed on the inner wall of the sewage treatment tank (100).

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