A biofilm reactor

Abstract

The utility model relates to sewage biofilm treatment technology field, concretely is a kind of biofilm reaction device, including pool body, the two sides of pool body are provided with liquid inlet pipe and liquid outlet pipe respectively, the bottom of pool body is provided with aeration assembly;The inside of pool body is provided with biofilm assembly, biofilm assembly is located above aeration assembly, the density of biofilm assembly in the inside of pool body gradually becomes rare along the direction of far from liquid inlet pipe;The top of pool body is provided with displacement component for adjusting the spacing between biofilm assembly. The utility model gradually sets up the rare state along the direction of far from liquid inlet pipe by the density of biofilm assembly, and it is matched with the characteristics that pollutant concentration in sewage gradually reduces with flow, both can ensure that high concentration pollutant near inlet is degraded by sufficient microorganism, also avoid the resource waste and the problem of excessive water flow resistance in subsequent low concentration area due to assembly too dense.

Description

Technical Field

[0001] This utility model relates to the field of wastewater biofilm treatment technology, specifically a biofilm reaction device. Background Technology

[0002] Existing biofilm reactors often employ a uniformly distributed biofilm module design when treating wastewater, failing to consider the gradual decrease in pollutant concentration along the flow direction. Near the inlet, pollutant concentrations are higher, requiring more biofilm for degradation; however, uniformly distributed modules often suffer from insufficient treatment capacity in this area. Conversely, further downstream, pollutant concentrations have decreased significantly; overly dense biofilm modules not only waste materials but also increase flow resistance, affecting wastewater flow efficiency and resulting in poor overall treatment performance.

[0003] Meanwhile, traditional aeration devices mostly rely on direct exhaust, resulting in uneven gas distribution. Insufficient oxygen supply in some areas can affect microbial activity, while excessively strong local airflow can impact the biofilm, causing it to detach or be damaged, thus disrupting the stability of the microbial community. Therefore, a biofilm reactor is urgently needed to solve these problems. Utility Model Content

[0004] In view of the shortcomings of the prior art mentioned in the background, the present invention provides a biofilm reaction device.

[0005] This utility model overcomes the above technical problems by adopting the following technical solution:

[0006] A biofilm reactor includes a tank body, with an inlet pipe and an outlet pipe respectively provided on both sides of the tank body, and an aeration assembly provided at the bottom of the tank body;

[0007] The tank is equipped with a biofilm assembly located above the aeration assembly. The density of the biofilm assembly inside the tank gradually decreases along the direction away from the inlet pipe.

[0008] The top of the pool is equipped with a displacement component for adjusting the spacing between the biofilm components.

[0009] Preferably, the biofilm assembly includes a sleeve, and the outer circumferential wall of the sleeve is fixedly connected with equally spaced fixing screws, and the outer circumferential wall of the fixing screws is threadedly connected with a biofilm carrier for culturing and attaching the biofilm.

[0010] Preferably, the biofilm carrier includes a threaded cylinder, an inner ring plate, a partition plate, and an outer ring plate. The threaded cylinder is threadedly connected to the fixing screw. The partition plate is fixedly connected to the threaded cylinder, the inner ring plate, and the outer ring plate. The partition plates are distributed in equal-distance circles inside the outer ring plate, and an arc-shaped groove is formed on the inner circumference of the outer ring plate.

[0011] Preferably, the displacement assembly includes a rack fixedly connected to the outer wall of the top of the pool body, a rotating column inserted into the inside of the sleeve, and gears fixedly connected to both ends of the rotating column, the rotating column meshing with the rack.

[0012] Preferably, a baffle is fixedly connected to one side of the outer wall of the rack, and one side of the outer wall of the baffle is in contact with one side of the outer wall of the gear.

[0013] Preferably, the aeration assembly includes an aeration pipe fixedly connected to the bottom of the pool, the top of the aeration pipe having aeration holes evenly distributed, one end of the aeration pipe extending to the outside of the pool being fixedly connected to an air guide pipe, and the other end of the air guide pipe being fixedly connected to an air inlet pipe.

[0014] Preferably, the top of the aeration pipe is fixedly connected to a support column that is distributed at equal intervals, and the other end of the support column is fixedly connected to a top cap. The top cap is placed directly above the aeration hole, and the outer circumferential wall of the top cap is provided with diversion grooves that are distributed in a circular pattern at equal intervals.

[0015] By adopting the above structure, this utility model has the following advantages compared with the prior art:

[0016] 1. In this invention, by gradually setting the density of the biofilm component to a sparse state along the direction away from the inlet pipe, which matches the characteristic that the concentration of pollutants in the wastewater gradually decreases with the flow, it can ensure that high-concentration pollutants near the inlet are sufficiently degraded by microorganisms, while avoiding the waste of resources and excessive water flow resistance caused by overly dense components in the subsequent low-concentration areas. This significantly improves the targeting and overall efficiency of wastewater treatment. At the same time, the special structure of the biofilm carrier (such as the circularly distributed baffles and the arc-shaped grooves on the inner wall of the outer ring plate) increases the biofilm attachment area and facilitates full contact between wastewater and biofilm, further enhancing the pollutant degradation effect.

[0017] 2. In this utility model, by placing the top cap of the aeration component directly above the aeration holes, and in conjunction with the diversion groove on its outer circumference, the gas can be evenly distributed to all parts of the tank, providing sufficient oxygen for microorganisms and ensuring efficient metabolic activities. At the same time, the top cap can prevent the airflow from rising directly and causing impact damage to the microorganisms on the biofilm carrier, effectively protecting the stable growth of the biofilm. This design not only improves the uniformity of aeration, but also creates a more suitable living environment for microorganisms, indirectly improving the efficiency of wastewater treatment.

[0018] 3. In this utility model, the rotating column in the displacement component drives the gear to move along the rack, which can flexibly adjust the spacing between the biofilm components to adapt to the needs of different wastewater quality and treatment volume, greatly improving the applicability of the device. In addition, the threaded connection between the biofilm carrier and the fixed screw ensures its stability during the treatment process, and the baffle on one side of the rack limits the gear, ensuring the smooth and reliable displacement adjustment process. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the biofilm component structure of this utility model.

[0021] Figure 3 This utility model Figure 2 A magnified structural diagram of point A in the middle.

[0022] Figure 4 This is a schematic diagram of the aeration component structure of this utility model.

[0023] Figure 5 This utility model Figure 4 A magnified structural diagram at point B in the middle.

[0024] In the diagram: 1. Tank body; 2. Inlet pipe; 3. Sleeve; 4. Rack; 5. Baffle; 6. Gear; 7. Rotating column; 8. Air inlet pipe; 9. Air guide pipe; 10. Aeration pipe; 12. Fixing screw; 13. Biofilm carrier; 1301. Threaded cylinder; 1302. Inner ring plate; 1303. Baffle; 1304. Arc groove; 1305. Outer ring plate; 14. Top cap; 15. Support column; 16. Diversion groove; 17. Aeration hole. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 In this embodiment of the present invention, a biofilm reaction device includes a tank body 1, with an inlet pipe 2 and an outlet pipe respectively provided on both sides of the tank body 1, and an aeration assembly provided at the bottom of the tank body 1.

[0027] The interior of tank 1 is equipped with a biofilm module, which is located above the aeration module. The density of the biofilm module inside tank 1 gradually decreases along the direction away from the inlet pipe 2. This is consistent with the gradual decrease in pollutant concentration in the wastewater as it flows. This ensures that there are enough microorganisms to degrade high-concentration pollutants near the inlet, while avoiding resource waste and excessive water flow resistance caused by overly dense biofilm modules in the subsequent low-concentration areas.

[0028] The top of the pool body 1 is equipped with a displacement component for adjusting the spacing between the biofilm components.

[0029] Furthermore, the biofilm assembly includes a sleeve 3, with fixed screws 12 evenly distributed on the outer circumference of the sleeve 3. A biofilm carrier 13 for culturing and attaching the biofilm is threaded onto the outer circumference of the fixed screws 12. The threaded connection between the biofilm carrier 13 and the fixed screws 12 ensures the stability of the biofilm carrier 13 during the wastewater treatment process.

[0030] Furthermore, the biofilm carrier 13 includes a threaded cylinder 1301, an inner ring plate 1302, a partition plate 1303, and an outer ring plate 1305. The threaded cylinder 1301 is threadedly connected to the fixing screw 12. The partition plate 1303 is fixedly connected to the threaded cylinder 1301, the inner ring plate 1302, and the outer ring plate 1305. The partition plates 1303 are distributed in a circular pattern at equal intervals inside the outer ring plate 1305. An arc-shaped groove 1304 is formed on the inner circumference of the outer ring plate 1305. The special structure of the biofilm carrier 13, such as the partition plate 1303 and the arc-shaped groove 1304, increases the attachment area of ​​the biofilm and facilitates full contact between sewage and biofilm, further improving the sewage treatment effect.

[0031] Furthermore, the displacement assembly includes a rack 4 fixedly connected to the top outer wall of the tank body 1, a rotating column 7 inserted inside the sleeve 3, and gears 6 fixedly connected to both ends of the rotating column 7. The rotating column 7 and the rack 4 mesh with each other, and the rotating column 7 in the displacement assembly can drive the gears 6 to move along the rack 4, thereby adjusting the spacing between the biofilm components, adapting to the needs of different wastewater qualities and treatment volumes, and enhancing the flexibility and applicability of the device.

[0032] Furthermore, a baffle 5 is fixedly connected to one side of the outer wall of the rack 4. The outer wall of one side of the baffle 5 contacts the outer wall of one side of the gear 6. The baffle 5 can limit the position of the gear 6 and ensure the stability of the displacement adjustment.

[0033] Furthermore, the aeration assembly includes an aeration pipe 10 fixedly connected to the bottom of the tank body 1. The top of the aeration pipe 10 is provided with aeration holes 17 evenly distributed. One end of the aeration pipe 10 extending to the outside of the tank body 1 is fixedly connected to an air guide pipe 9, and the other end of the air guide pipe 9 is fixedly connected to an air inlet pipe 8. The air inlet pipe 8 is connected to an external air supply system. At this time, the aeration assembly delivers gas to the aeration pipe 10 through the air inlet pipe 8 and the air guide pipe 9, and the gas is discharged through the aeration holes 17.

[0034] Furthermore, the top of the aeration pipe 10 is fixedly connected with equally spaced support columns 15, and the other end of the support column 15 is fixedly connected with a top cap 14. The top cap 14 is placed directly above the aeration hole 17. The outer circumference of the top cap 14 is provided with equally spaced circular diversion grooves 16. The top cap 14 and the diversion grooves 16 can not only evenly disperse the gas into the tank 1 to provide sufficient oxygen for microorganisms and improve degradation efficiency, but also prevent the airflow from rising directly and damaging the microorganisms on the biofilm carrier 13.

[0035] Working principle: After the sewage enters the tank 1 through the inlet pipe 2, it comes into contact with the biofilm component located above the aeration component during the flow process. The microorganisms on the biofilm carrier 13 degrade the pollutants in the sewage. At the same time, the air inlet pipe 8 is connected to the external air supply system. At this time, the aeration component delivers gas to the aeration pipe 10 through the air inlet pipe 8 and the air guide pipe 9. The gas is discharged through the aeration hole 17. The top cap 14 and the diversion channel 16 can not only evenly disperse the gas in the tank 1 to provide sufficient oxygen for the microorganisms and improve the degradation efficiency, but also prevent the airflow from rising directly and damaging the microorganisms on the biofilm carrier 13.

[0036] The density of the biofilm components inside the tank 1 gradually decreases along the direction away from the inlet pipe 2. This is consistent with the gradual decrease in pollutant concentration in the wastewater as it flows. This ensures that there are enough microorganisms to degrade high-concentration pollutants near the inlet, while avoiding resource waste and excessive water flow resistance caused by overly dense biofilm components in the subsequent low-concentration areas. In addition, the staff can use the rotating column 7 in the displacement component to drive the gear 6 to move along the rack 4, thereby adjusting the spacing between the biofilm components to meet the needs of different wastewater qualities and treatment volumes, and enhancing the flexibility and applicability of the device.

[0037] The special structure of the biofilm carrier 13, such as the partition 1303 and the arc groove 1304, increases the attachment area of ​​the biofilm and facilitates full contact between the sewage and the biofilm, further improving the sewage treatment effect. The threaded connection between the biofilm carrier 13 and the fixing screw 12 can ensure the stability of the biofilm carrier 13 in the sewage treatment process. In addition, the baffle 5 can limit the gear 6 and ensure the stability of displacement adjustment.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention.

Claims

1. A biofilm reactor, comprising a tank (1), characterized in that, The pool body (1) is provided with an inlet pipe (2) and an outlet pipe on both sides, and an aeration assembly is provided at the bottom of the pool body (1). The inside of the pool (1) is provided with a biofilm assembly, which is located above the aeration assembly. The density of the biofilm assembly inside the pool (1) gradually decreases in the direction away from the liquid inlet pipe (2). The top of the pool body (1) is provided with a displacement component for adjusting the spacing between biofilm components; The biofilm assembly includes a sleeve (3), and the outer circumferential wall of the sleeve (3) is fixedly connected with equally spaced fixing screws (12), and the outer circumferential wall of the fixing screws (12) is threadedly connected with a biofilm carrier (13) for culturing and attaching the biofilm. The displacement assembly includes a rack (4) fixedly connected to the top outer wall of the pool body (1), a rotating column (7) inserted inside the sleeve (3), and gears (6) fixedly connected to both ends of the rotating column (7), and the rotating column (7) meshing with the rack (4).

2. The biofilm reactor according to claim 1, characterized in that, The biofilm carrier (13) includes a threaded cylinder (1301), an inner ring plate (1302), a partition plate (1303), and an outer ring plate (1305). The threaded cylinder (1301) is threadedly connected to the fixing screw (12). The partition plate (1303) is fixedly connected to the threaded cylinder (1301), the inner ring plate (1302), and the outer ring plate (1305). The partition plates (1303) are distributed in a circular pattern at equal intervals inside the outer ring plate (1305). The inner circumference of the outer ring plate (1305) is provided with an arc-shaped groove (1304).

3. The biofilm reactor according to claim 1, characterized in that, A baffle (5) is fixedly connected to one side of the outer wall of the rack (4), and one side of the outer wall of the baffle (5) is in contact with one side of the outer wall of the gear (6).

4. A biofilm reaction device according to claim 1, characterized in that, The aeration assembly includes an aeration pipe (10) fixedly connected to the bottom of the pool body (1). The top of the aeration pipe (10) is provided with aeration holes (17) distributed at equal intervals. One end of the aeration pipe (10) extending to the outside of the pool body (1) is fixedly connected to an air guide pipe (9), and the other end of the air guide pipe (9) is fixedly connected to an air inlet pipe (8).

5. A biofilm reaction device according to claim 4, characterized in that, The top of the aeration pipe (10) is fixedly connected to a support column (15) that is distributed at equal intervals. The other end of the support column (15) is fixedly connected to a top cap (14). The top cap (14) is placed directly above the aeration hole (17). The outer circumference of the top cap (14) is provided with a diversion groove (16) that is distributed in a circular pattern at equal intervals.

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