Sewage treatment equipment based on MBBR (Moving Bed Biofilm Reactor) process
By introducing sewage pools and microporous filter plates into MBBR sewage treatment equipment for pre-treatment and setting up stirring blades in the reaction tank, the problem of sewage impurities wear in sewage treatment equipment and the inability to treat sewage again is solved, and the long life and efficient treatment effect of the equipment are achieved.
Patent Information
- Application Number
- CN202421738311.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The existing MBBR sewage treatment equipment has not been pretreated before treating the sewage, resulting in floating objects or impurities such as sand and gravel in the sewage contact with the filler and the MBBR membrane group, causing wear and affecting the service life, and the sewage after treatment cannot be treated secondary.
A sewage treatment equipment based on the MBBR process is designed, including a sewage pool and a microporous filter plate for sewage pretreatment. The floating matter and sand and gravel in the sewage are pretreated through the microporous filter plate, and agitating blades are installed in the reaction cell to ensure sufficient reaction between the sewage and the filler or MBBR membrane group.
By pretreating the sewage, the impurities in the sewage are avoided from friction with the filler or MBBR membrane group, the service life of the filler or MBBR membrane group is extended, the replacement frequency and production cost are reduced, and the effective secondary treatment of the sewage is achieved.
Smart Images
Figure CN222861352U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment, and more specifically to sewage treatment equipment based on MBBR process. Background Art
[0002] MBBR process uses the basic principle of biofilm method. By adding a certain amount of suspended carriers into the reactor, the biomass and biological species in the reactor are increased, thereby improving the treatment efficiency of the reactor. Moving bed biofilm reactor is another innovative biofilm reactor that has attracted much attention from researchers in recent years. It was developed to solve the complex operations of fixed bed reactors requiring regular backwashing, fluidized beds requiring carrier fluidization, and submerged biofilters requiring filter media cleaning and aerator replacement when they are blocked.
[0003] The shortcomings of the prior art: The MBBR sewage treatment equipment in the prior art does not pre-treat the sewage before treating it. Therefore, impurities such as floating objects or sand and gravel in the sewage continue to flow in the reaction tank, contacting the filler and the MBBR membrane group, causing wear and affecting the service life of the filler and the MBBR membrane group. Frequent replacement increases production costs. At the same time, the clean water after the treatment contains sludge solids generated by biological reactions, and the mixture in the middle layer and the sewage that does not react sufficiently in the reaction tank can no longer be treated for a second time. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a sewage treatment equipment based on the MBBR process to solve the problem in the above-mentioned background technology that impurities such as floating objects or sand and gravel in the sewage continuously flow in the reaction tank, contact with the filler and the MBBR membrane group, causing wear, and the sludge solid mixture generated by the reaction and the sewage that does not react sufficiently in the reaction tank can no longer be treated for a secondary treatment.
[0005] The utility model provides the following technical solutions: a sewage treatment equipment based on MBBR process, comprising a treatment box and a sewage pool fixedly installed at the left end thereof, characterized in that: a microporous filter plate for sewage pretreatment is fixedly installed in the inner cavity of the sewage pool, a cleaning component for cleaning the surface of the microporous filter plate is arranged on one side of the top of the treatment box, the inner cavity of the treatment box is arranged from left to right in sequence as a regulating tank, a first reaction tank, a second reaction tank, a membrane biological reaction tank and a clean water sedimentation tank, two stirring components for stirring sewage are fixedly installed at equal distances on the top of the treatment box, an aeration component is fixedly installed on one side of the top of the treatment box, a second reflux pump is fixedly installed on one side of the inner cavity of the clean water sedimentation tank, and the output end of the second reflux pump is connected to the regulating tank through a pipeline;
[0006] The cleaning component comprises a cleaning brush movably connected to the surface of the microporous filter plate, the top end of the cleaning brush is fixedly connected to a connecting block, and one end of the connecting block is fixedly connected to the output end of the cylinder.
[0007] Preferably, the stirring assembly comprises stirring blades located in the inner cavities of the first reaction tank and the second reaction tank, the top end of the stirring blade is fixedly connected to a connecting rod, and the top end of the connecting rod is fixedly connected to the output end of the motor.
[0008] Preferably, a water pump is fixedly installed on one side of the inner cavity of the regulating tank, the first reaction tank and the second reaction tank, a first reflux pump is fixed on one side of the inner cavity of the first reaction tank and the second reaction tank, and the output ends of the water pump and the first reflux pump are fixedly connected with water pipes.
[0009] Preferably, the inner cavities of the first reaction tank and the second reaction tank are both filled with fillers, the inner cavity of the membrane biological reactor is fixedly installed with an MBBR membrane group, the output end of the MBBR membrane group is fixedly connected to a suction pump, a sludge tank is provided on one side of the lower part of the inner cavity of the clean water sedimentation tank, and a guide plate is provided on the other side of the lower part of the inner cavity of the clean water sedimentation tank.
[0010] Preferably, the right end of the treatment box is fixedly connected to a disinfection tank, and two filter cartridges are fixedly installed at equal distances between the clean water sedimentation tank and the disinfection tank.
[0011] Preferably, the aeration assembly includes a fan, the output end of the fan is fixedly connected to an outlet pipe, and the end of the outlet pipe away from the output end of the fan is fixedly connected to three aeration pipes at equal distances, and the three aeration pipes are respectively fixedly installed in the lower part of the inner cavity of the first reaction tank, the second reaction tank and the membrane biological reactor.
[0012] Technical effects and advantages of the utility model:
[0013] 1. The utility model pre-treats sewage by providing a sewage pool and a microporous filter plate, and pre-treats impurities such as floating objects and sand and gravel in the sewage. Since the reaction tank is provided with stirring blades to make the sewage flow, it is ensured that the sewage reacts fully with the filler or the MBBR membrane group. By pre-treating the sewage, it is avoided that the sewage rubs against the filler or the MBBR membrane group in the reaction tank, which causes the wear of the filler or the MBBR membrane group, effectively prolongs the service life of the filler or the MBBR membrane group, avoids frequent replacement and increases production costs, and at the same time, after the filtration is completed, the impurities such as floating objects or sand and gravel on the surface of the microporous filter plate are cleaned off by a cleaning brush to avoid affecting the subsequent filtration effect.
[0014] 2. The utility model is provided with a clean water sedimentation tank to precipitate the clean water after treatment. Sludge precipitation will be formed after contact and reaction with the filler or MBBR membrane group in the reaction tank. The clean water in the upper layer of the clean water sedimentation tank will pass through the filter cartridge into the disinfection tank for disinfection and then be discharged. The mixed liquid in the middle layer is pumped back to the regulating tank for secondary treatment through the second reflux pump. At the same time, the sewage that has not reacted sufficiently in the first reaction tank and the second reaction tank is pumped back to the previous reaction tank for secondary treatment through the first reflux pump to ensure the effect of sewage treatment. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the utility model.
[0016] Figure 2 It is a schematic diagram of the overall inner cavity structure of the utility model.
[0017] Figure 3 For the utility model Figure 1 A schematic diagram of the enlarged structure in the middle.
[0018] Figure 4 This is a schematic structural diagram of the overall inner cavity of the utility model from another perspective.
[0019] Figure 5 It is a schematic diagram of the internal structure of the clean water sedimentation tank of the utility model.
[0020] The accompanying drawings are marked as follows: 1. treatment box; 2. sewage tank; 3. microporous filter plate; 4. cleaning component; 41. cleaning brush; 42. connecting block; 43. cylinder; 5. regulating tank; 6. first reaction tank; 7. second reaction tank; 8. membrane biological reactor; 9. clean water sedimentation tank; 10. disinfection tank; 11. stirring component; 111. motor; 112. connecting rod; 113. stirring blade; 12. aeration component; 121. fan; 122. outlet pipe; 123. aeration pipe; 13. MBBR membrane group; 14. sludge tank; 15. guide plate; 16. filter cartridge; 17. water pump; 18. first reflux pump; 19. suction pump; 20. second reflux pump. DETAILED DESCRIPTION
[0021] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The sewage treatment equipment based on the MBBR process involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.
[0022] The utility model provides a sewage treatment equipment based on MBBR process, such as Figure 1 - Figure 5 As shown, it includes a treatment box 1 and a sewage pool 2 fixedly installed at the left end thereof. A microporous filter plate 3 for sewage pretreatment is fixedly installed in the inner cavity of the sewage pool 2. The sewage to be treated is first pretreated in the sewage pool 2 through the microporous filter plate 3 to filter out floating objects or sand and gravel in the sewage. A cleaning component 4 for cleaning the surface of the microporous filter plate 3 is arranged on one side of the top of the treatment box 1. The inner cavity of the treatment box 1 is arranged from left to right in sequence as a regulating tank 5, a first reaction tank 6, a second reaction tank 7, a membrane biological reaction tank 8 and a clean water sedimentation tank 9. Two stirring components 11 for stirring sewage are fixedly installed at equal distances on the top of the treatment box 1. An aeration component 12 is fixedly installed on one side of the top of the treatment box 1. A second reflux pump 20 is fixedly installed on one side of the inner cavity of the clean water sedimentation tank 9. The output end of the second reflux pump 20 is connected to the regulating tank 5 through a pipeline. The treated sewage is precipitated in the clean water sedimentation tank 9, so that the sludge generated by the reaction is separated, and the sludge mixture in the middle layer is pumped back to the regulating tank 5 through the second reflux pump 20 for secondary treatment.
[0023] Further, such as Figure 2 and Figure 3 As shown, the cleaning component 4 includes a cleaning brush 41 movably connected to the surface of the microporous filter plate 3, and a connecting block 42 is fixedly connected to the top of the cleaning brush 41. One end of the connecting block 42 is fixedly connected to the output end of the cylinder 43. After the sewage is treated, there will be accumulation of filtered matter on the surface of the microporous filter plate 3. The cleaning brush 41 is pushed by the cylinder 43 to clean up the filtered matter on the surface of the microporous filter plate 3, thereby ensuring the subsequent sewage filtering effect.
[0024] Further, such as Figure 2 The stirring assembly 11 includes a stirring blade 113 located in the inner cavity of the first reaction tank 6 and the second reaction tank 7. The top of the stirring blade 113 is fixedly connected to a connecting rod 112. The top of the connecting rod 112 is fixedly connected to the output end of the motor 111. The motor 111 causes the stirring blade 113 to rotate in the inner cavity of the first reaction tank 6 and the second reaction tank 7, so that the sewage flows.
[0025] Furthermore, a water pump 17 is fixedly installed on one side of the inner cavity of the regulating tank 5, the first reaction tank 6 and the second reaction tank 7, and a first reflux pump 18 is fixed on one side of the inner cavity of the first reaction tank 6 and the second reaction tank 7. The output ends of the water pump 17 and the first reflux pump 18 are fixedly connected with water pipes. The sewage is transmitted by the water pump 17, and the sewage that does not react fully is refluxed through the first reflux pump 18 for secondary treatment.
[0026] Further, such as Figure 1 and Figure 4As shown, the inner cavities of the first reaction tank 6 and the second reaction tank 7 are filled with fillers, and the inner cavity of the membrane biological reactor 8 is fixedly installed with an MBBR membrane group 13. The microorganisms in the sewage are in contact with the fillers and the MBBR membrane group 13. Under the action of the microorganisms, the organic matter in the sewage is decomposed into harmless substances such as carbon dioxide and water, thereby achieving the purpose of purifying the sewage. The output end of the MBBR membrane group 13 is fixedly connected to a suction pump 19, so that the sewage can fully react with the MBBR membrane group 13. A sludge tank 14 is provided on one side of the lower part of the inner cavity of the clean water sedimentation tank 9, and a guide plate 15 is provided on the other side of the lower part of the inner cavity of the clean water sedimentation tank 9. The sludge and other harmless substances generated by the reaction are precipitated in the clean water sedimentation tank 9 and collected through the sludge tank 14.
[0027] Further, such as Figure 5 As shown, the right end of the treatment box 1 is fixedly connected to the disinfection tank 10, and two filter cartridges 16 are fixedly installed at equal distances between the clean water sedimentation tank 9 and the disinfection tank 10. After the purified sewage is precipitated in the clean water sedimentation tank 9, the upper clean water enters the disinfection tank 10 through the filter cartridge 16, and is discharged or used directly after disinfection.
[0028] Further, such as Figure 4 As shown, the aeration assembly 12 includes a fan 121, the output end of the fan 121 is fixedly connected to an outlet pipe 122, and one end of the outlet pipe 122 away from the output end of the fan 121 is fixedly connected to three aeration pipes 123 at equal distances, and the three aeration pipes 123 are respectively fixedly installed in the lower part of the inner cavity of the first reaction tank 6, the second reaction tank 7 and the membrane biological reactor 8.
[0029] The working principle of the utility model is as follows: first, the sewage to be treated is drained into the sewage pool 2, and first pre-treated through the microporous filter plate 3, and the floating objects or sand and gravel in the sewage are pre-treated through the microporous filter plate 3, and then the sewage enters the regulating tank 5 for sedimentation after the treatment is completed, and the sewage after sedimentation in the regulating tank 5 is transferred to the first reaction tank 6 through the water pump 17, and the sewage in the inner cavity of the first reaction tank 6 is transferred to the second reaction tank 7 through the water pump 17, and the sewage in the second reaction tank 7 flows into the membrane biological reactor 8 through the notch, and the sewage is purified by the fillers in the inner cavities of the first reaction tank 6 and the second reaction tank 7 and the MBBR membrane group 13 in the inner cavity of the membrane biological reactor 8, and the inadequate reaction The sewage is refluxed through the first reflux pump 18 for secondary treatment. The microorganisms in the sewage are in contact with the filler and the MBBR membrane group 13. Under the action of the microorganisms, the organic matter in the sewage is decomposed into harmless substances such as carbon dioxide and water. During the reaction, the sewage is made to flow by the stirring blades 113 to ensure that the sewage can fully react. The treated sewage is precipitated in the clean water sedimentation tank 9 to separate the sludge generated by the reaction. The sludge mixture in the middle layer is pumped back to the regulating tank 5 through the second reflux pump 20 for secondary treatment. After the purified sewage is precipitated in the clean water sedimentation tank 9, the clean water in the upper layer enters the disinfection tank 10 through the filter cartridge 16 and is discharged or used directly after disinfection.
[0030] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;
[0031] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;
[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A sewage treatment device based on MBBR process, comprising a treatment box (1) and a sewage tank (2) fixedly installed at the left end thereof, characterized in that: A microporous filter plate (3) for sewage pretreatment is fixedly installed in the inner cavity of the sewage pool (2); a cleaning component (4) for cleaning the surface of the microporous filter plate (3) is arranged on one side of the top of the treatment box (1); the inner cavity of the treatment box (1) is arranged from left to right to include a regulating tank (5), a first reaction tank (6), a second reaction tank (7), a membrane biological reaction tank (8) and a clean water sedimentation tank (9); two stirring components (11) for stirring sewage are fixedly installed at equal distances on the top of the treatment box (1); an aeration component (12) is fixedly installed on one side of the top of the treatment box (1); a second reflux pump (20) is fixedly installed on one side of the inner cavity of the clean water sedimentation tank (9); and the output end of the second reflux pump (20) is connected to the regulating tank (5) through a pipeline; The cleaning assembly (4) comprises a cleaning brush (41) movably connected to the surface of the microporous filter plate (3), a connecting block (42) being fixedly connected to the top end of the cleaning brush (41), and one end of the connecting block (42) being fixedly connected to the output end of the cylinder (43).
2. A sewage treatment equipment based on MBBR process according to claim 1, characterized in that: The stirring assembly (11) comprises a stirring blade (113) located in the inner cavity of the first reaction tank (6) and the second reaction tank (7); the top end of the stirring blade (113) is fixedly connected to a connecting rod (112); and the top end of the connecting rod (112) is fixedly connected to the output end of the motor (111).
3. A sewage treatment equipment based on MBBR process according to claim 1, characterized in that: A water pump (17) is fixedly installed on one side of the inner cavity of the regulating tank (5), the first reaction tank (6) and the second reaction tank (7); a first reflux pump (18) is fixedly installed on one side of the inner cavity of the first reaction tank (6) and the second reaction tank (7); and the output ends of the water pump (17) and the first reflux pump (18) are fixedly connected to water pipes.
4. A sewage treatment equipment based on MBBR process according to claim 1, characterized in that: The inner cavities of the first reaction tank (6) and the second reaction tank (7) are filled with fillers, the inner cavity of the membrane biological reactor (8) is fixedly installed with an MBBR membrane group (13), and the output end of the MBBR membrane group (13) is fixedly connected to a suction pump (19), a sludge tank (14) is arranged on one side of the lower part of the inner cavity of the clean water sedimentation tank (9), and a guide plate (15) is arranged on the other side of the lower part of the inner cavity of the clean water sedimentation tank (9).
5. The MBBR-based sewage treatment equipment according to claim 1, characterized in that: The right end of the treatment box (1) is fixedly connected to a disinfection tank (10), and two filter cartridges (16) are fixedly installed at equal distances between the clean water sedimentation tank (9) and the disinfection tank (10).
6. A sewage treatment equipment based on MBBR process according to claim 1, characterized in that: The aeration component (12) comprises a fan (121), the output end of the fan (121) is fixedly connected to an outlet pipe (122), one end of the outlet pipe (122) away from the output end of the fan (121) is fixedly connected to three aeration pipes (123) at equal distances, and the three aeration pipes (123) are respectively fixedly installed in the lower part of the inner cavity of the first reaction tank (6), the second reaction tank (7) and the membrane biological reaction tank (8).