A device for efficient contact oxidation treatment of medical wastewater

Abstract

The utility model discloses a kind of for medical wastewater efficient contact oxidation treatment device, including processing box, water inlet component, contact oxidation component, aeration component, water outlet component and backwashing component, the water inlet area, contact oxidation area and water outlet area are sequentially arranged from top to bottom in the processing box inside, water distribution plate is arranged between the water inlet area and contact oxidation area, filter plate is arranged between contact oxidation area and water outlet area, the water inlet component includes wastewater inlet pipe and water distributor;By setting rotatable biological carrier unit, driving motor drives biological carrier module to rotate, in combination with the circulation effect generated by cyclone type aeration head, the contact area and contact frequency of biofilm and wastewater can be significantly increased, effectively eliminate wastewater flow dead zone, improve pollutant degradation efficiency, device overall structure is compact, degree of automation is high, easy to operate, can adapt to different water quality medical wastewater treatment needs, with wide application prospect.

Description

Technical Field

[0001] This utility model relates to the field of medical wastewater treatment technology, and in particular to a high-efficiency contact oxidation treatment device for medical wastewater. Background Technology

[0002] Medical wastewater is complex in composition, containing a large number of pathogenic microorganisms, organic matter, disinfectants, heavy metals, and other pollutants. If discharged directly without effective treatment, it will pose a serious threat to the aquatic environment and human health. Contact oxidation, as a highly efficient biological treatment technology, is widely used in medical wastewater treatment. Its core principle is that microorganisms attach to the surface of a carrier to form a biofilm, which fully contacts and oxidizes and decomposes the pollutants in the wastewater, thus purifying the wastewater.

[0003] However, existing medical wastewater contact oxidation treatment devices still have many shortcomings in practical applications: the biological carriers in traditional devices are mostly fixed installations or simple suspended designs, resulting in limited contact area between the biofilm and wastewater, and dead zones easily appearing in the flow of wastewater within the device, leading to low pollutant degradation efficiency and making it difficult to meet the needs of efficient medical wastewater treatment; medical wastewater contains a certain amount of impurities and flocs, which easily adhere to the surface of the biological carrier, causing carrier blockage, affecting the activity and mass transfer efficiency of the biofilm, requiring frequent cleaning or replacement of the carrier, increasing operating costs and maintenance workload. Therefore, we propose a high-efficiency contact oxidation treatment device for medical wastewater. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this utility model provides a high-efficiency contact oxidation treatment device for medical wastewater. By incorporating a rotatable biological carrier unit, a drive motor rotates the biological carrier module. Combined with the circulation effect generated by the swirl aeration head, this significantly increases the contact area and frequency between the biofilm and the wastewater, effectively eliminating dead zones in wastewater flow and improving pollutant degradation efficiency. The device has a compact overall structure, high degree of automation, and simple operation, adapting to the treatment needs of medical wastewater with different water qualities and possessing broad application prospects. The biological carrier module adopts a structure of alternating porous sponge carrier and elastic fiber carrier, with hemispherical protrusions on the surface of the elastic fiber carrier. This not only increases the biofilm adhesion but also generates vibration during rotation, reducing the adhesion of impurities and flocs on the carrier surface, lowering the probability of carrier clogging, extending the backwashing cycle, and reducing maintenance workload and operating costs.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A high-efficiency contact oxidation treatment device for medical wastewater, comprising a treatment tank, an inlet component, a contact oxidation component, an aeration component, an outlet component, and a backwashing component. The treatment tank contains an inlet zone, a contact oxidation zone, and an outlet zone arranged sequentially from top to bottom. A water distribution plate is provided between the inlet zone and the contact oxidation zone, and a filter plate is provided between the contact oxidation zone and the outlet zone. The inlet component includes a wastewater inlet pipe and a water distributor. One end of the wastewater inlet pipe is connected to an external medical wastewater source, and the other end extends into the treatment tank and connects to the water distributor. The water distributor is located within the inlet zone and is positioned opposite the water distribution plate. The contact oxidation assembly includes multiple rotatable biological carrier units, which are evenly distributed within the contact oxidation zone. Each rotatable biological carrier unit includes a rotating shaft, a drive motor, and a biological carrier module. The top end of the rotating shaft is rotatably connected to a mounting bracket inside the treatment tank via a bearing seat. The bottom end of the rotating shaft passes through a filter plate and a partition plate in sequence and is connected to the output end of the drive motor. The drive motor is fixedly installed inside the bottom of the treatment tank. The biological carrier module is sleeved on the rotating shaft. The effluent assembly includes a drain pipe and a water quality monitor. One end of the drain pipe is connected to the effluent zone, and the other end extends outside the treatment tank. The water quality monitor is installed on the drain pipe.

[0006] As a preferred embodiment of this utility model, the aeration assembly includes an aeration main pipe, aeration branch pipes, and swirl aeration heads. One end of the aeration main pipe is connected to an external air source, and the other end of the aeration main pipe extends into the treatment tank and is connected to the aeration branch pipes. The aeration branch pipes are horizontally distributed at the bottom of the contact oxidation zone and above the filter plate. Several swirl aeration heads are spaced apart on each aeration branch pipe. A flow regulating valve is provided on the aeration main pipe.

[0007] As a preferred embodiment of this utility model, the backwashing assembly includes a backwashing inlet pipe, a backwashing outlet pipe, and backwashing nozzles. One end of the backwashing inlet pipe is connected to an external clean water source, and the other end extends into the treatment tank and is connected to several backwashing nozzles. The several backwashing nozzles are located at the top of the contact oxidation zone and are arranged opposite to the rotatable biological carrier unit. One end of the backwashing outlet pipe is connected to the bottom of the inlet zone, and the other end extends outside the treatment tank. A drain valve is provided on the backwashing outlet pipe.

[0008] As a preferred technical solution of this utility model, the biological carrier module adopts a structure of alternating porous sponge carrier and elastic fiber carrier. The elastic fiber carrier is made of polyester fiber material, and the surface of the elastic fiber carrier is provided with a number of hemispherical protrusions. The distance between two adjacent rotatable biological carrier units is 30 centimeters.

[0009] As a preferred embodiment of this utility model, the top of the treatment box is provided with an exhaust port, and an activated carbon adsorption core is installed on the exhaust port.

[0010] As a preferred technical solution of this utility model, a control panel is provided on the outside of the treatment box, and the control panel is electrically connected to the drive motor, water quality monitor, flow regulating valve and sewage discharge valve respectively.

[0011] As a preferred embodiment of this utility model, the filter plate is provided with a plurality of filter holes, and a filter membrane is installed in the filter holes. The filter membrane is made of polyvinylidene fluoride.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. By setting a rotatable biological carrier unit, the driving motor drives the biological carrier module to rotate. Combined with the circulation effect generated by the swirl aeration head, the contact area and contact frequency between the biofilm and wastewater can be significantly increased, effectively eliminating the dead zone of wastewater flow, improving the degradation efficiency of pollutants. The device has a compact overall structure, high degree of automation, and simple operation. It can adapt to the treatment needs of medical wastewater with different water qualities and has broad application prospects. The biological carrier module adopts a structure of alternating porous sponge carrier and elastic fiber carrier. The surface of the elastic fiber carrier is provided with hemispherical protrusions, which can not only increase the amount of biofilm adhesion, but also generate a certain vibration during rotation, reducing the adhesion of impurities and flocs on the carrier surface, reducing the probability of carrier blockage, extending the backwashing cycle, and reducing maintenance workload and operating costs.

[0013] 2. The aeration component is equipped with a flow regulating valve, which can flexibly adjust the aeration volume according to the water quality feedback from the water quality monitor, so as to achieve oxygen supply on demand, avoid energy waste, and ensure that the biofilm is always in the best active state. The backwashing component is used in conjunction with the rotatable biological carrier unit. During the backwashing process, the biological carrier module rotates and the backwashing nozzle washes it in all directions. The washing effect is good, which can quickly restore the carrier performance and ensure the long-term stable operation of the device. Attached Figure Description

[0014] Figure 1 This is a front cross-sectional view of the present invention.

[0015] Figure 2 This is a top view of the structure of this utility model.

[0016] Figure 3 This is a top view cross-sectional structural diagram of the biological carrier module of this utility model.

[0017] The components include: 1. Treatment tank; 2. Inlet water assembly; 3. Contact oxidation assembly; 4. Aeration assembly; 5. Outlet water assembly; 6. Backwash assembly; 7. Inlet water zone; 8. Contact oxidation zone; 9. Outlet water zone; 10. Water distribution plate; 11. Filter plate; 12. Wastewater inlet pipe; 13. Water distributor; 14. Rotatable biological carrier unit; 15. Drive motor; 16. Biological carrier module; 17. Porous sponge carrier; 18. Elastic fiber carrier; 19. Drainage pipe; 20. Water quality monitor; 21. Main aeration pipe; 22. Aeration branch pipe; 23. Swirl aeration head; 24. Backwash inlet pipe; 25. Backwash outlet pipe; 26. Backwash nozzle. Detailed Implementation

[0018] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation are all within the protection scope of this utility model without creative effort.

[0019] For an example, please refer to... Figure 1 , Figure 2 , Figure 3As shown, this utility model provides a high-efficiency contact oxidation treatment device for medical wastewater, including a treatment tank 1, an inlet component 2, a contact oxidation component 3, an aeration component 4, an outlet component 5, and a backwashing component 6. The treatment tank 1 has an inlet zone 7, a contact oxidation zone 8, and an outlet zone 9 arranged sequentially from top to bottom. A water distribution plate 10 is arranged between the inlet zone 7 and the contact oxidation zone 8, and a filter plate 11 is arranged between the contact oxidation zone 8 and the outlet zone 9. The inlet component 2 includes a wastewater inlet pipe 12 and a water distributor 13. One end of the wastewater inlet pipe 12 is connected to an external medical wastewater source, and the other end extends into the treatment tank 1 and connects to the water distributor 13. The water distributor 13 is located in the inlet zone 7 and is positioned opposite to the water distribution plate 10. The contact oxidation component 3 includes multiple rotatable biological carrier units 14, which are evenly distributed within the contact oxidation zone 8. Each rotatable biological carrier unit 14 includes a rotating shaft, a drive motor 15, and a biological carrier. Module 16, the top of the rotating shaft is rotatably connected to the mounting bracket inside the treatment tank 1 via a bearing seat. The bottom of the rotating shaft passes through the filter plate 11 and the partition in sequence and is connected to the output end of the drive motor 15. The drive motor 15 is fixedly installed inside the bottom of the treatment tank 1. The biological carrier module 16 is sleeved on the rotating shaft. The effluent assembly 5 includes a drain pipe 19 and a water quality monitor 20. One end of the drain pipe 19 is connected to the effluent area 9, and the other end of the drain pipe 19 extends to the outside of the treatment tank 1. The water quality monitor 20 is installed on the drain pipe 19. By setting the rotatable biological carrier unit 14, the drive motor 15 drives the biological carrier module 16 to rotate. Combined with the circulation effect generated by the swirl aeration head 23, the contact area and contact frequency between the biofilm and the wastewater can be significantly increased, effectively eliminating the dead zone of wastewater flow and improving the pollutant degradation efficiency. The device has a compact overall structure, a high degree of automation, and is easy to operate. It can adapt to the treatment needs of medical wastewater with different water qualities and has broad application prospects.

[0020] like Figure 1 As shown, the aeration assembly 4 includes an aeration main pipe 21, aeration branch pipes 22, and swirl aeration heads 23. One end of the aeration main pipe 21 is connected to an external air source, and the other end of the aeration main pipe 21 extends into the treatment tank 1 and is connected to the aeration branch pipes 22. The aeration branch pipes 22 are horizontally distributed at the bottom of the contact oxidation zone 8 and above the filter plate 11. Several swirl aeration heads 23 are spaced apart on each aeration branch pipe 22. A flow regulating valve is installed on the aeration main pipe 21. The flow regulating valve in the aeration assembly 4 can flexibly adjust the aeration volume according to the water quality feedback from the water quality monitor 20, realize oxygen supply on demand, avoid energy waste, and ensure that the biofilm is always in the best active state.

[0021] like Figure 1As shown, the backwash assembly 6 includes a backwash inlet pipe 24, a backwash outlet pipe 25, and backwash nozzles 26. One end of the backwash inlet pipe 24 is connected to an external clean water source, and the other end extends into the treatment tank 1 and is connected to several backwash nozzles 26. The several backwash nozzles 26 are located at the top of the contact oxidation zone 8 and are arranged opposite to the rotatable biological carrier unit 14. One end of the backwash outlet pipe 25 is connected to the bottom of the inlet zone 7, and the other end extends outside the treatment tank 1. A drain valve is provided on the backwash outlet pipe 25. The backwash assembly 6 is used in conjunction with the rotatable biological carrier unit 14. During the backwashing process, the biological carrier module 16 rotates, and the backwash nozzles 26 rinse it in all directions, resulting in a good rinsing effect, which can quickly restore the carrier performance and ensure the long-term stable operation of the device.

[0022] like Figure 1 , Figure 3 As shown, the biocarrier module 16 adopts a structure of alternating porous sponge carrier 17 and elastic fiber carrier 18. The elastic fiber carrier 18 is made of polyester fiber material, and its surface is provided with several hemispherical protrusions. The distance between two adjacent rotatable biocarrier units 14 is 30 centimeters. The biocarrier module 16 adopts a structure of alternating porous sponge carrier 17 and elastic fiber carrier 18, and the surface of the elastic fiber carrier 18 is provided with hemispherical protrusions. This not only increases the amount of biofilm attached, but also generates a certain amount of vibration during rotation, reducing the attachment of impurities and flocs on the carrier surface, reducing the probability of carrier blockage, extending the backwashing cycle, and reducing maintenance workload and operating costs.

[0023] like Figure 1 As shown, the top of the treatment box 1 is equipped with an exhaust port, and an activated carbon adsorption core is installed on the exhaust port.

[0024] like Figure 1 , Figure 2 As shown, a control panel is installed on the outside of the treatment box 1. The control panel is electrically connected to the drive motor 15, the water quality monitor 20, the flow regulating valve, and the drain valve.

[0025] like Figure 1 As shown, the filter plate 11 has several filter holes, and a filter membrane is installed in the filter holes. The filter membrane is made of polyvinylidene fluoride.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency contact oxidation treatment device for medical wastewater, comprising a treatment tank (1), an inlet assembly (2), a contact oxidation assembly (3), an aeration assembly (4), an outlet assembly (5), and a backwashing assembly (6), characterized in that: The treatment tank (1) is arranged from top to bottom as follows: an inlet zone (7), a contact oxidation zone (8), and an outlet zone (9). A water distribution plate (10) is arranged between the inlet zone (7) and the contact oxidation zone (8). A filter plate (11) is arranged between the contact oxidation zone (8) and the outlet zone (9). The inlet assembly (2) includes a wastewater inlet pipe (12) and a water distributor (13). One end of the wastewater inlet pipe (12) is connected to an external medical wastewater source, and the other end of the wastewater inlet pipe (12) extends into the treatment tank (1) and is connected to the water distributor (13). The water distributor (13) is located in the inlet zone (7) and is arranged opposite to the water distribution plate (10). The contact oxidation assembly (3) includes multiple rotatable biological carrier units (14). The rotating biological carrier unit (14) is evenly distributed in the contact oxidation zone (8). It includes a rotating shaft, a drive motor (15) and a biological carrier module (16). The top of the rotating shaft is rotatably connected to the mounting frame inside the treatment box (1) through a bearing seat. The bottom of the rotating shaft passes through the filter plate (11) and the partition in sequence and is connected to the output end of the drive motor (15). The drive motor (15) is fixedly installed inside the bottom of the treatment box (1). The biological carrier module (16) is sleeved on the rotating shaft. The effluent assembly (5) includes a drain pipe (19) and a water quality monitor (20). One end of the drain pipe (19) is connected to the effluent zone (9). The other end of the drain pipe (19) extends to the outside of the treatment box (1). The water quality monitor (20) is installed on the drain pipe (19).

2. The device for high-efficiency contact oxidation treatment of medical wastewater according to claim 1, characterized in that: The aeration assembly (4) includes an aeration main pipe (21), aeration branch pipes (22), and swirl aeration heads (23). One end of the aeration main pipe (21) is connected to an external air source, and the other end of the aeration main pipe (21) extends into the treatment box (1) and is connected to the aeration branch pipes (22). The aeration branch pipes (22) are horizontally distributed at the bottom of the contact oxidation zone (8) and above the filter plate (11). Each aeration branch pipe (22) is provided with several swirl aeration heads (23) at intervals. The aeration main pipe (21) is provided with a flow regulating valve.

3. The device for high-efficiency contact oxidation treatment of medical wastewater according to claim 1, characterized in that: The backwash assembly (6) includes a backwash inlet pipe (24), a backwash outlet pipe (25), and a backwash nozzle (26). One end of the backwash inlet pipe (24) is connected to an external clean water source, and the other end of the backwash inlet pipe (24) extends into the treatment tank (1) and is connected to several backwash nozzles (26). Several backwash nozzles (26) are located at the top of the contact oxidation zone (8) and are arranged opposite to the rotatable biological carrier unit (14). One end of the backwash outlet pipe (25) is connected to the bottom of the inlet zone (7), and the other end of the backwash outlet pipe (25) extends outside the treatment tank (1). A drain valve is provided on the backwash outlet pipe (25).

4. The device for high-efficiency contact oxidation treatment of medical wastewater according to claim 1, characterized in that: The biological carrier module (16) adopts a structure of alternating porous sponge carrier (17) and elastic fiber carrier (18). The elastic fiber carrier (18) is made of polyester fiber material. The surface of the elastic fiber carrier (18) is provided with several hemispherical protrusions. The distance between two adjacent rotatable biological carrier units (14) is 30 centimeters.

5. The high-efficiency contact oxidation treatment device for medical wastewater according to claim 1, characterized in that: The top of the treatment box (1) is provided with an exhaust port, and an activated carbon adsorption core is installed on the exhaust port.

6. The high-efficiency contact oxidation treatment device for medical wastewater according to claim 1, characterized in that: The treatment box (1) is equipped with a control panel on its outside. The control panel is electrically connected to the drive motor (15), water quality monitor (20), flow regulating valve, and sewage discharge valve.

7. The device for high-efficiency contact oxidation treatment of medical wastewater according to claim 1, characterized in that: The filter plate (11) is provided with a plurality of filter holes, and a filter membrane is installed in the filter holes. The filter membrane is made of polyvinylidene fluoride.

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