Anaerobic fermentation treatment device for printing and dyeing wastewater treatment
By combining a multi-fermentation chamber series design with a stirring mechanism, the problems of uneven water flow and incomplete biogas collection were solved, achieving efficient anaerobic fermentation treatment of dyeing and printing wastewater and efficient separation of biogas, thus improving purification quality and resource recovery efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LINYI COUNTY XINDELI TEXTILE PRINTING & DYEING CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-06-16
AI Technical Summary
In existing dyeing and printing wastewater treatment devices, the rotation of the filter components causes uneven water flow, resulting in insufficient contact between microorganisms and wastewater, poor mixing effect, and incomplete biogas collection.
The system adopts a multi-fermentation chamber series design, combined with a stirring mechanism and a collection mechanism. Through the coordinated work of the stirring blades, vertical stirring cylinder and scraper, the wastewater is ensured to be mixed evenly, and the biogas is efficiently collected and separated through L-shaped connecting pipe and gas-liquid separation box.
It significantly improves the anaerobic fermentation treatment effect of dyeing and printing wastewater, ensures full contact between microorganisms and wastewater, improves purification quality, and achieves efficient separation and resource recovery of biogas.
Smart Images
Figure CN224362633U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water treatment technology, and more specifically, to an anaerobic fermentation treatment device for treating dyeing and printing wastewater. Background Technology
[0002] In the textile printing and dyeing industry, printing and dyeing wastewater is characterized by large volume, complex water quality, high concentration of organic matter, deep color, and high alkalinity, making it difficult to treat. At present, anaerobic fermentation treatment technology has been widely used in the treatment of printing and dyeing wastewater. This technology can decompose the organic matter in printing and dyeing wastewater into substances such as methane and carbon dioxide under anaerobic conditions through the metabolic action of anaerobic microorganisms, thereby reducing the organic matter content in the wastewater and achieving preliminary purification of the wastewater.
[0003] In the existing mechanism, the two sets of filter screens are located at different heights inside the tank. When the lower filter screen is replaced, during the process of pulling out the lower filter screen, the liquid processed by the upper filter screen flows downward and comes into contact with the dirt intercepted on the upper surface of the lower filter screen, causing the liquid that comes into contact with the dirt to flow directly out of the tank.
[0004] A search revealed that Chinese patent CN220677011U discloses a device for treating dyeing and printing wastewater. This structure uses a shaft inside the tank to drive multiple sets of filter components to rotate, which then enter the filter chamber sequentially to filter the wastewater. Multiple cleaning chambers are provided inside the tank to clean the filter components removed from the filter chamber, making them reusable.
[0005] However, in actual use, this structure uses a shaft to drive the filter assembly to rotate for filtration. The filter assembly hinders the free flow of wastewater in the tank, causing the water flow to form an irregular path. This results in some areas having fast water flow and others having slow water flow. However, anaerobic microorganisms mainly rely on the water flow to fully contact the wastewater. Uneven water flow distribution will result in insufficient contact between the microorganisms and the wastewater, thus affecting the mixing effect. Utility Model Content
[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides an anaerobic fermentation treatment device for dyeing and printing wastewater treatment, so as to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] An anaerobic fermentation treatment device for treating dyeing and printing wastewater includes a fermentation tank, wherein multiple fermentation chambers are fixedly arranged on the inner wall of the fermentation tank, and a stirring mechanism is arranged inside the fermentation chambers.
[0009] The stirring mechanism includes a motor fixedly installed on the top of the fermentation tank. A rotating shaft is fixedly installed at the output end of the motor. One end of the rotating shaft is connected to the inner wall of the fermentation tank. Multiple connecting strips are fixedly installed on the surface of the rotating shaft. A scraper is fixedly installed at one end of the connecting strip. A connecting rod is fixedly installed on one side of the connecting strip. A vertical stirring cylinder is fixedly installed on the surface of the connecting rod. Multiple stirring blades are fixedly installed on the surface of the rotating shaft.
[0010] A connecting pipe is provided between the multiple fermentation chambers, and a control valve is fixedly installed on one side of the connecting pipe;
[0011] One of the fermentation chambers has a feed pipe extending through its top, with one end of the feed pipe penetrating the fermentation tank and extending outwards. The other fermentation chamber has a discharge pipe extending through its bottom, with one end of the discharge pipe penetrating the fermentation tank and extending outwards. The surface of the feed pipe is equipped with a feed valve, the top of the feed pipe is equipped with a feed hopper, and the surface of the discharge pipe is equipped with a discharge valve.
[0012] By adopting the above technical solution, through the series design of multiple fermentation chambers and the coordinated operation of the stirring mechanism, the dyeing and printing wastewater can be gradually anaerobic fermented in each chamber, significantly improving the treatment effect.
[0013] As a further description of the above technical solution: a collection mechanism is provided on one side of the fermentation chamber. The collection mechanism includes an L-shaped connecting pipe that passes through the top of the fermentation chamber. One end of the L-shaped connecting pipe passes through the fermentation tank and extends into the fermentation tank. A main collection pipe is provided through one end of the L-shaped connecting pipe. A main gas outlet pipe is provided through one end of the main collection pipe. A gas-liquid separator is provided through one end of the main gas outlet pipe.
[0014] The L-shaped connecting pipe and the main vent pipe are both equipped with a second valve. The inner wall of the gas-liquid separator is fixedly equipped with a fixed mesh plate. Multiple wire meshes are fixedly installed on the top of the fixed mesh plate. A vent pipe and a liquid outlet pipe are connected through one side of the gas-liquid separator. The vent pipe is located on one side of the liquid outlet pipe. A third valve is fixedly installed on the surface of both the vent pipe and the liquid outlet pipe.
[0015] By adopting the above technical solution: the gas-liquid separation box is equipped with a fixed mesh plate and wire mesh, and the dual mechanism of gravity sedimentation and interception is used to efficiently separate the water in the biogas, realizing the efficient collection, purification and utilization of biogas. This not only avoids biogas leakage, but also recovers resources, ensuring that the anaerobic fermentation treatment process of dyeing and printing wastewater is green, environmentally friendly, safe and orderly.
[0016] As a further description of the above technical solution: a feeding pipe is provided through the top of the fermentation chamber, one end of the fermentation chamber passes through the fermentation tank and extends to the outside of the fermentation tank, an insulation layer is fixedly provided on the surface of the fermentation tank, the insulation layer is made of polyurethane foam, and multiple support legs are fixedly provided at the bottom of the fermentation tank.
[0017] By adopting the above technical solution, the insulation layer made of polyurethane foam can effectively isolate external temperature interference, maintain the internal temperature of the fermentation tank, create suitable environmental conditions for anaerobic fermentation, and improve fermentation efficiency.
[0018] The technical effects and advantages of this utility model are as follows:
[0019] 1. By setting up a stirring mechanism, compared with existing technologies, the multi-fermentation chamber series design allows wastewater to gradually complete anaerobic fermentation in each chamber, significantly improving the treatment effect. The feed pipe and addition pipe penetrate the tank structure, facilitating the introduction of wastewater and the addition of materials such as anaerobic microorganisms, ensuring sufficient fermentation raw materials. Moreover, the motor drives the rotating shaft to rotate, so that the stirring blades, vertical stirring drum and scraper work together. The stirring blades directly promote the mixing of wastewater and microorganisms, the vertical stirring drum enhances water flow disturbance, and the scraper closely adheres to the inner wall of the chamber to prevent material adhesion, ensuring uniform mixing and optimizing the initial fermentation efficiency. In addition, the pipes connect each chamber and are equipped with control valves, which can control the orderly flow of wastewater into the next chamber to achieve step fermentation. The combination of the discharge pipe and discharge valve can flexibly control the discharge flow of the treated wastewater. The whole system has a reasonable structure and is easy to operate, which can efficiently complete the anaerobic fermentation treatment of dyeing and printing wastewater and improve the wastewater purification quality.
[0020] 2. By setting up a collection mechanism, compared with existing technologies, the biogas produced during fermentation can be efficiently introduced into the gas-liquid separation box through the through-design of the L-shaped connecting pipe and the main collection pipe. The L-shaped connecting pipe runs through the structure at the top of the fermentation chamber, which facilitates the smooth rise and collection of biogas. The setting of the second valve can flexibly control the flow of biogas. The gas-liquid separation box uses a dual mechanism of gravity settling and wire mesh interception on the fixed mesh plate. First, some water settles due to gravity, and then the wire mesh separates the tiny droplets, realizing the efficient separation of biogas and water. The separated water and pure biogas are discharged through the liquid outlet pipe and gas outlet pipe, respectively. The third valve can precisely control the discharge of liquid and gas. Moreover, the polyurethane foam insulation layer on the surface of the fermentation tank can maintain the internal temperature stability, creating a suitable environment for anaerobic fermentation, ensuring the safe and orderly operation of biogas collection, separation and fermentation processes, and achieving dual protection for resource recovery and treatment. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0022] Figure 2This is a schematic diagram of the overall rear cross-sectional structure of this utility model.
[0023] Figure 3 This is a schematic diagram of the overall frontal cross-sectional structure of this utility model.
[0024] Figure 4 This is a cross-sectional structural diagram of the stirring mechanism of this utility model.
[0025] Figure 5 This is a schematic diagram of the collection mechanism structure of this utility model.
[0026] The attached diagram is labeled as follows: 1. Fermentation tank; 2. Fermentation chamber; 3. Motor; 4. Rotary shaft; 5. Connecting strip; 6. Scraper; 7. Connecting rod; 8. Vertical stirring drum; 9. Stirring blade; 10. Through pipe; 11. Control valve; 12. Feed pipe; 13. Discharge pipe; 14. Feed valve; 15. Feed hopper; 16. Discharge valve; 17. L-shaped connecting pipe; 18. Main collection pipe; 19. Main vent pipe; 20. Gas-liquid separator; 21. Second valve; 22. Fixed mesh plate; 23. Wire mesh; 24. Vent pipe; 25. Liquid outlet pipe; 26. Third valve; 27. Feeding pipe; 28. Insulation layer; 29. Support leg. Detailed Implementation
[0027] 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.
[0028] The embodiments disclosed in this application are as follows: Figure 1-5 An anaerobic fermentation treatment device for treating dyeing and printing wastewater is shown, including a fermentation tank 1, a plurality of fermentation chambers 2 are fixedly arranged on the inner wall of the fermentation tank 1, and a stirring mechanism is arranged inside the fermentation chambers 2.
[0029] The stirring mechanism includes a motor 3 fixedly installed on the top of the fermentation tank 1. A rotating shaft 4 is fixedly installed at the output end of the motor 3. One end of the rotating shaft 4 is connected to the inner wall of the fermentation tank 1. Multiple connecting strips 5 are fixedly installed on the surface of the rotating shaft 4. A scraper 6 is fixedly installed at one end of the connecting strip 5. A connecting rod 7 is fixedly installed on one side of the connecting strip 5. A vertical stirring cylinder 8 is fixedly installed on the surface of the connecting rod 7. Multiple stirring blades 9 are fixedly installed on the surface of the rotating shaft 4.
[0030] A through pipe 10 is provided between multiple fermentation chambers 2, and a control valve 11 is fixedly installed on one side of the through pipe 10;
[0031] One of the fermentation chambers 2 has a feed pipe 12 that runs through the top, with one end of the feed pipe 12 passing through the fermentation tank 1 and extending to the outside of the fermentation tank 1. The other fermentation chamber 2 has a discharge pipe 13 that runs through the bottom, with one end of the discharge pipe 13 passing through the fermentation tank 1 and extending to the outside of the fermentation tank 1. The surface of the feed pipe 12 is provided with a feed valve 14, the top of the feed pipe 12 is provided with a feed hopper 15, and the surface of the discharge pipe 13 is provided with a discharge valve 16.
[0032] Open the feed valve 14 and the dyeing wastewater enters one of the fermentation chambers 2 through the feed pipe 12. Since the feed pipe 12 passes through the fermentation tank 1 and one end is connected to the outside, the wastewater enters the device through this pipe. At the same time, anaerobic microorganisms and other fermentation materials can be added to the fermentation chamber 2 as needed through the feed pipe 27. One end of the feed pipe 27 passes through the fermentation tank 1, which makes it convenient to add materials from the outside. Then, the motor 3 is connected to the external power supply.
[0033] Then the motor 3 starts, driving the rotating shaft 4 to rotate. At the same time, the motor 3 is fixedly installed on the top of the fermentation tank 1, and one end of the rotating shaft 4 passes through the fermentation chamber 2 and is connected to the inner wall of the fermentation tank 1 to provide support for the rotation.
[0034] The stirring blades 9, vertical stirring cylinder 8, and scraper 6 on the surface of the rotating shaft 4 move accordingly. The stirring blades 9 directly stir the wastewater, promoting the mixing of wastewater and anaerobic microorganisms. The vertical stirring cylinder 8 is connected to the rotating shaft 4 through the connecting rod 7, which enhances the water flow disturbance when rotating. At the same time, the scraper 6 is fixed on the connecting strip 5 and closely adheres to the inner wall of the fermentation chamber 2 to prevent materials from adhering to the inner wall of the chamber, ensuring uniform stirring, and the initial fermentation process begins.
[0035] After the wastewater in the fermentation chamber 2 has completed its initial fermentation, the control valve 11 on the connecting pipe 10 is opened. Since the connecting pipe 10 connects multiple fermentation chambers 2, the control valve 11 controls the flow of wastewater. The wastewater flows into the next fermentation chamber 2 through the connecting pipe 10, and the above stirring and fermentation process is repeated. Anaerobic fermentation is gradually completed in multiple fermentation chambers 2 to improve the treatment effect. The wastewater that has completed the fermentation treatment is discharged through the discharge pipe 13, and the discharge valve 16 controls the discharge flow rate.
[0036] Reference Figure 2-3 As shown, a collection mechanism is provided on one side of the fermentation chamber 2. The collection mechanism includes an L-shaped connecting pipe 17 that runs through the top of the fermentation chamber 2. One end of the L-shaped connecting pipe 17 passes through the fermentation tank 1 and extends into the fermentation tank 1. A main collection pipe 18 is provided through one end of the L-shaped connecting pipe 17. A main gas outlet pipe 19 is provided through one end of the main collection pipe 18. A gas-liquid separator 20 is provided through one end of the main gas outlet pipe 19.
[0037] The surfaces of the L-shaped connecting pipe 17 and the main vent pipe 19 are both equipped with second valves 21. The inner wall of the gas-liquid separator 20 is fixedly equipped with a fixed mesh plate 22. Multiple wire meshes 23 are fixedly equipped on the top of the fixed mesh plate 22. A vent pipe 24 and a liquid outlet pipe 25 are connected through one side of the gas-liquid separator 20. The vent pipe 24 is located on one side of the liquid outlet pipe 25. The surfaces of the vent pipe 24 and the liquid outlet pipe 25 are both fixedly equipped with third valves 26.
[0038] The biogas produced during fermentation rises and passes through the L-shaped connecting pipe 17. Since the L-shaped connecting pipe 17 passes through the top of the fermentation chamber 2, one end extends into the interior of the fermentation tank 1 and enters the main collection pipe 18. The second valve 21 on the surface of the L-shaped connecting pipe 17 is opened, and the biogas enters the gas-liquid separator 20 through the main collection pipe 18 and the main gas outlet pipe 19.
[0039] When biogas containing moisture enters the gas-liquid separator 20, it first settles due to gravity inside the separator. Some of the moisture sinks due to gravity, and the biogas continues to flow, passing through the wire mesh 23 on the fixed mesh plate 22. The wire mesh 23 intercepts tiny droplets, further achieving gas-liquid separation.
[0040] Reference Figure 4-5 As shown, a feeding pipe 27 is provided through the top of the fermentation chamber 2, one end of the fermentation chamber 2 passes through the fermentation tank 1 and extends to the outside of the fermentation tank 1, an insulation layer 28 is fixedly provided on the surface of the fermentation tank 1, the insulation layer 28 is made of polyurethane foam, and multiple support legs 29 are fixedly provided at the bottom of the fermentation tank 1.
[0041] The separated water is discharged from the liquid outlet pipe 25. By opening the third valve 26 on the surface of the liquid outlet pipe 25, the pure biogas is discharged from the gas outlet pipe 24.
[0042] The insulation layer 28 on the surface of the fermentation tank 1 is made of polyurethane foam, which maintains the internal temperature of the fermentation tank 1 and provides a suitable environment for anaerobic fermentation. In addition, the support legs 29 at the bottom of the fermentation tank 1 ensure that the device is placed stably and that the entire process is carried out safely and stably.
[0043] Working principle of this utility model:
[0044] This utility model is an anaerobic fermentation treatment device for treating dyeing and printing wastewater. When the device is in use, the inlet valve 14 is opened and the dyeing and printing wastewater enters one of the fermentation chambers 2 through the inlet pipe 12. Since the inlet pipe 12 passes through the fermentation tank 1 and one end is connected to the outside, the wastewater enters the device through this pipe. At the same time, anaerobic microorganisms and other fermentation materials can be added to the fermentation chamber 2 as needed through the feeding pipe 27. One end of the feeding pipe 27 passes through the fermentation tank 1, which facilitates the addition of materials from the outside. Then, the motor 3 is connected to an external power source.
[0045] Then the motor 3 starts, driving the rotating shaft 4 to rotate. At the same time, the motor 3 is fixedly installed on the top of the fermentation tank 1, and one end of the rotating shaft 4 passes through the fermentation chamber 2 and is connected to the inner wall of the fermentation tank 1 to provide support for the rotation.
[0046] The stirring blades 9, vertical stirring cylinder 8, and scraper 6 on the surface of the rotating shaft 4 move accordingly. The stirring blades 9 directly stir the wastewater, promoting the mixing of wastewater and anaerobic microorganisms. The vertical stirring cylinder 8 is connected to the rotating shaft 4 through the connecting rod 7, which enhances the water flow disturbance when rotating. At the same time, the scraper 6 is fixed on the connecting strip 5 and closely adheres to the inner wall of the fermentation chamber 2 to prevent materials from adhering to the inner wall of the chamber, ensuring uniform stirring, and the initial fermentation process begins.
[0047] After the wastewater in the fermentation chamber 2 has completed the initial fermentation, the control valve 11 on the pipe 10 is opened. Since the pipe 10 connects multiple fermentation chambers 2, the control valve 11 controls the flow of wastewater. The wastewater flows into the next fermentation chamber 2 through the pipe 10, and the above stirring and fermentation process is repeated. Anaerobic fermentation is gradually completed in multiple fermentation chambers 2 to improve the treatment effect. The wastewater that has completed the fermentation treatment is discharged through the discharge pipe 13, and the discharge valve 16 controls the discharge flow rate.
[0048] Furthermore, the biogas produced during the fermentation process rises and passes through the L-shaped connecting pipe 17. Since the L-shaped connecting pipe 17 runs through the top of the fermentation chamber 2 and one end extends into the fermentation tank 1 and enters the main collection pipe 18, the second valve 21 on the surface of the L-shaped connecting pipe 17 is opened, and the biogas enters the gas-liquid separator 20 through the main collection pipe 18 and the main gas outlet pipe 19.
[0049] After the biogas containing moisture enters the gas-liquid separator 20, it first settles by gravity in the chamber. Some of the moisture sinks due to gravity, and the biogas continues to flow, passing through the wire mesh 23 on the fixed mesh plate 22. The wire mesh 23 intercepts tiny droplets, further achieving gas-liquid separation.
[0050] The separated water is discharged from the liquid outlet pipe 25. By opening the third valve 26 on the surface of the liquid outlet pipe 25, the pure biogas is discharged from the gas outlet pipe 24.
[0051] The insulation layer 28 on the surface of the fermentation tank 1 is made of polyurethane foam, which maintains the internal temperature of the fermentation tank 1 and provides a suitable environment for anaerobic fermentation. In addition, the support legs 29 at the bottom of the fermentation tank 1 ensure that the device is placed stably and that the entire process is carried out safely and stably.
[0052] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An anaerobic fermentation treatment device for treating dyeing and printing wastewater, comprising a fermentation tank (1), characterized in that: The fermentation tank (1) has multiple fermentation chambers (2) fixedly arranged on its inner wall, and a stirring mechanism is provided inside each fermentation chamber (2). The stirring mechanism includes a motor (3) fixedly installed on the top of the fermentation tank (1), a rotating shaft (4) fixedly installed at the output end of the motor (3), one end of the rotating shaft (4) being connected to the inner wall of the fermentation tank (1), a plurality of connecting strips (5) fixedly installed on the surface of the rotating shaft (4), a scraper (6) fixedly installed at one end of the connecting strip (5), a connecting rod (7) fixedly installed on one side of the connecting strip (5), a vertical stirring cylinder (8) fixedly installed on the surface of the connecting rod (7), and a plurality of stirring blades (9) fixedly installed on the surface of the rotating shaft (4). A through pipe (10) is provided between the multiple fermentation chambers (2), and a control valve (11) is fixedly provided on one side of the through pipe (10).
2. The anaerobic fermentation treatment device for treating dyeing and printing wastewater according to claim 1, characterized in that: One of the fermentation chambers (2) has a feed pipe (12) that runs through the top of it. One end of the feed pipe (12) runs through the fermentation tank (1) and extends to the outside of the fermentation tank (1). The other fermentation chamber (2) has a discharge pipe (13) that runs through the bottom of it. One end of the discharge pipe (13) runs through the fermentation tank (1) and extends to the outside of the fermentation tank (1).
3. The anaerobic fermentation treatment device for treating dyeing and printing wastewater according to claim 2, characterized in that: The feed pipe (12) is provided with a feed valve (14) on its surface, a feed hopper (15) is provided through the top of the feed pipe (12), and a discharge valve (16) is provided on the surface of the discharge pipe (13).
4. The anaerobic fermentation treatment device for treating dyeing and printing wastewater according to claim 1, characterized in that: A collection mechanism is provided on one side of the fermentation chamber (2). The collection mechanism includes an L-shaped connecting pipe (17) that runs through the top of the fermentation chamber (2). One end of the L-shaped connecting pipe (17) passes through the fermentation tank (1) and extends into the fermentation tank (1). A main collection pipe (18) is provided through one end of the L-shaped connecting pipe (17). A main gas outlet pipe (19) is provided through one end of the main collection pipe (18). A gas-liquid separator (20) is provided through one end of the main gas outlet pipe (19).
5. The anaerobic fermentation treatment device for treating dyeing and printing wastewater according to claim 4, characterized in that: The L-shaped connecting pipe (17) and the main air outlet pipe (19) are both provided with a second valve (21). The inner wall of the gas-liquid separator (20) is fixedly provided with a fixed mesh plate (22), and the top of the fixed mesh plate (22) is fixedly provided with multiple wire meshes (23). A gas outlet pipe (24) and a liquid outlet pipe (25) are provided through one side of the gas-liquid separator (20). The gas outlet pipe (24) is located on one side of the liquid outlet pipe (25). A third valve (26) is fixedly provided on the surface of both the gas outlet pipe (24) and the liquid outlet pipe (25).
6. The anaerobic fermentation treatment device for treating dyeing and printing wastewater according to claim 1, characterized in that: A feeding pipe (27) is provided through the top of the fermentation chamber (2). One end of the fermentation chamber (2) passes through the fermentation tank (1) and extends to the outside of the fermentation tank (1). A heat insulation layer (28) is fixedly provided on the surface of the fermentation tank (1). The heat insulation layer (28) is made of polyurethane foam. Multiple support legs (29) are fixedly provided at the bottom of the fermentation tank (1).