An anaerobic biological treatment reactor for production wastewater

Abstract

The utility model relates to production wastewater treatment technical field, concretely is an anaerobic biological treatment reactor of production wastewater, including reactor shell, stirring system, water distribution system, temperature control system and sludge discharge system. Reactor shell inside is equipped with solid -liquid separation plate and sludge hopper, stirring system includes horizontal agitator and multiple vertical agitator, forms three -dimensional stirring flow field, water distribution system adopts annular water distribution pipe and multiple water distribution head, realizes even water distribution, temperature control system passes through temperature sensor, controller, flow regulating valve and heating pipe automatic regulation reaction temperature, sludge discharge system adopts screw rod elevator drive piston structure, realizes the reliable sealing and stable sludge discharge of sludge area. The utility model has solved the problem of the prior art in mixing, temperature control is not accurate and sludge discharge is not stable, improved the treatment efficiency and operation reliability of reactor.

Description

Technical Field

[0001] This utility model mainly relates to the field of industrial wastewater treatment technology, specifically an anaerobic biological treatment reactor for industrial wastewater. Background Technology

[0002] Industrial production processes generate large quantities of high-concentration organic wastewater, which typically requires purification through anaerobic biological treatment. Existing technologies, such as the anaerobic biological treatment reactor for wastewater disclosed in CN220467721U, offer a treatment solution, but have significant shortcomings in practical applications: Firstly, its water distribution system is simple, easily leading to uneven water flow distribution within the reactor, and it lacks an effective temperature control mechanism, making it difficult to maintain the optimal reaction temperature required by anaerobic microorganisms. Secondly, the reactor's internal circulation and mixing rely solely on guide pipes, lacking a stirring and mixing structure, which easily results in uneven mixing of the water and anaerobic microorganisms, thus affecting the reactor's treatment efficiency. Furthermore, its sludge discharge system uses a motor-driven rotating baffle to open and close; however, the motor is prone to deviations during long-term operation, affecting the sealing performance of the rotating baffle and consequently impacting the stability of sludge discharge.

[0003] Therefore, an anaerobic biological treatment reactor capable of efficiently treating wastewater and stably discharging sludge is needed. Utility Model Content

[0004] The purpose of this invention is to provide an anaerobic biological treatment reactor for industrial wastewater to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an anaerobic biological treatment reactor for production wastewater, comprising a reactor shell, with a solid-liquid separation plate and a sludge hopper arranged from top to bottom on the inner side wall of the reactor shell, and a diversion assembly arranged on the top outer wall of the reactor shell, the diversion assembly including a diversion pipe communicating with the inside of the reactor shell, the diversion pipe being connected to an outlet pipe, a return pipe and an air supply pipe, and the other end of the return pipe being connected to a heating pipe; it also includes an inlet structure and a sludge pumping structure located on both sides of the outside of the reactor shell, and a controller located outside the reactor shell, a temperature sensor and an annular water distribution pipe arranged in the upper area of ​​the sludge hopper, the temperature sensor being electrically connected to the controller, the annular water distribution pipe being connected to the inlet structure, and a sludge pumping port formed in the lower area of ​​the sludge hopper, the sludge pumping port being connected to the sludge pumping structure;

[0006] The water inlet structure includes an inlet pipe and a mixing pipe connected to each other. The other end of the mixing pipe branches and connects to an annular water distribution pipe and a heating pipe. A flow regulating valve is installed on the mixing pipe between the inlet pipe and the heating pipe. The flow regulating valve is electrically connected to the controller.

[0007] The reactor shell is also equipped with at least one horizontal agitator and multiple vertical agitators perpendicular to the horizontal agitator.

[0008] Preferably, a screw jack is fixedly installed at the bottom of the reactor shell, with a screw connected to its drive end. The screw passes into the inside of the reactor shell and forms a threaded section. A piston that fits into the lower end of the sludge hopper is threaded onto the threaded section. An elastic sealing sleeve is formed on the outer wall of the piston. The piston moves up and down in a spiral motion along the threaded section. When the piston rises to the top, the elastic sealing sleeve just seals the lower opening of the sludge hopper.

[0009] Preferably, waterproof sealing gaskets are provided at the connection points between the horizontal stirrer, the vertical stirrer, and the screw jack and the reactor shell.

[0010] Preferably, the horizontal stirrer includes a first drive motor mounted and fixed on the top outer wall of the reactor shell, the drive end of the first drive motor is connected to a first drive shaft, and multiple sets of stirring rods are equidistantly distributed along the axial direction on the first drive shaft.

[0011] Preferably, the vertical stirrer includes a second drive motor mounted and fixed on the side wall of the reactor shell, the drive end of the second drive motor is connected to a second drive shaft, and stirring blades are connected to the second drive shaft. The first drive shaft and the second drive shaft are perpendicular to each other.

[0012] Preferably, the bottom of the annular water distribution pipe has multiple water distribution heads arranged in a circumferential array.

[0013] Preferably, the sludge extraction structure is a pump body, with an input end being a sludge extraction pipe connected to the sludge extraction port and an output end being a sludge discharge pipe, used to discharge concentrated sludge from the reactor shell.

[0014] Preferably, the water inlet structure is a pump body, with an inlet pipe at the input end and a mixing pipe at the output end, and the flow regulating valve is used to regulate the instantaneous flow rate of water pumped into the water body by the inlet pipe.

[0015] Preferably, the heating tube has an inclined Z-shaped structure, with its central end perpendicular to the reactor shell, its bottom end connected to the mixing pipe, its top end branching to connect the return pipe and the gas supply pipe, and multiple heating grids evenly distributed along the axial direction inside its central end.

[0016] Preferably, the gas supply pipe is connected to an exhaust pipe, and a pressure valve is installed on the exhaust pipe. When the gas pressure inside the gas supply pipe reaches a set threshold, the pressure valve automatically opens to exhaust gas.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. Multi-dimensional mixing is achieved inside the reactor through horizontal and multiple vertical stirrers, promoting thorough mixing of wastewater and anaerobic microorganisms. Combined with a water distribution system consisting of an annular water distribution pipe and its array of water distribution heads, uniform distribution of influent across the cross-section of the reaction zone is realized. Simultaneously, a temperature control system composed of a temperature sensor, controller, flow regulating valve, heating pipe, and flow distribution components can automatically adjust the influent flow rate and recirculation heating ratio according to the internal temperature of the reactor. The synergistic effect of the above structures effectively improves mass transfer efficiency and stabilizes the reaction environment, thereby ensuring the efficient operation of the reactor.

[0019] 2. The structure of the piston driven by the screw jack and the lower end of the sludge hopper achieves reliable sealing and precise opening and closing of the sludge discharge port. The piston moves up and down along the screw section. When it rises to the top, it can completely seal the lower end of the sludge hopper, forming a closed sludge zone. The sludge suction structure connects the sludge suction pipe to the sludge suction port to stably discharge the concentrated sludge in the sludge zone. This mechanical transmission method avoids the sealing deviation problem that is easy to cause by the traditional motor-driven rotating partition, ensuring the stability and reliability of the sludge discharge process.

[0020] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0021] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of the present invention and other related contents, and should not be considered as limitations on the present invention.

[0022] In the accompanying drawings of the instruction manual:

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the reactor shell of this utility model;

[0025] Figure 3 This is a side sectional view of the main shell of the reactor of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure at point A of this utility model;

[0027] Figure 5 This is a schematic diagram of the pipe structure connected to the diversion pipe of this utility model;

[0028] Figure label:

[0029] 1. Reactor shell; 11. Controller; 12. Diversion port; 13. Sludge suction port; 14. Annular water distribution pipe; 141. Water distribution head; 15. Sludge hopper; 16. Screw jack; 161. Screw; 162. Piston; 163. Elastic sealing sleeve; 164. Threaded section; 17. Temperature sensor; 18. Solid-liquid separator; 2. Horizontal agitator; 21. First drive shaft; 22. Agitator rod; 3. Vertical agitator; 31. Second drive shaft; 32. Agitator blades; 4. Diverter assembly; 41. Diverter pipe; 42. Water outlet pipe; 43. Return pipe; 44. Air supply pipe; 45. Heating pipe; 46. Heating mesh; 47. Exhaust pipe; 48. Pressure valve; 5. Water inlet structure; 51. Water inlet pipe; 52. Mixing pipe; 53. Flow regulating valve; 6. Sludge pumping structure; 61. Sludge discharge pipe; 62. Sludge pumping pipe; 7. Support frame; 8. Support feet; 9. Waterproof sealing gasket. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] like Figures 1 to 5As shown, the present invention provides an anaerobic biological treatment reactor for industrial wastewater, comprising a reactor shell 1. A solid-liquid separator 19 and a sludge hopper 15 are arranged from top to bottom on the inner wall of the reactor shell 1. A diversion assembly 4 is arranged on the top outer wall of the reactor shell 1. The diversion assembly 4 includes a diversion pipe 41 communicating with the interior of the reactor shell 1, and an outlet pipe 42, a return pipe 43, and an air supply pipe 44 are connected to the diversion pipe 41. The other end of the return pipe 43 is connected to a heating pipe 45. The reactor also includes an inlet structure 5 and a sludge removal structure 6 located on both sides of the outside of the reactor shell 1, and a controller 11 located outside the reactor shell 1. A temperature sensor 17 and an annular water distribution pipe are arranged above the sludge hopper 15. 14. The temperature sensor 17 is electrically connected to the controller 11. The annular water distribution pipe 14 is connected to the water inlet structure 5. A sludge suction port 13 is formed in the lower area of ​​the sludge hopper 15. The sludge suction port 13 is connected to the sludge suction structure 6. The water inlet structure 5 includes an inlet pipe 51 and a mixing pipe 52 connected to each other. The other end of the mixing pipe 52 branches and is connected to the annular water distribution pipe 14 and the heating pipe 45. A flow regulating valve 53 is provided on the mixing pipe 52 at the position between the inlet pipe 51 and the heating pipe 45. The flow regulating valve 53 is electrically connected to the controller 11. At least one horizontal stirrer 2 and multiple vertical stirrers 3 perpendicular to the horizontal stirrer 2 are also provided on the reactor shell 1.

[0033] As a further explanation of the above, the reactor shell 1 adopts a cylindrical vertical structure, made of carbon steel and lined with an anti-corrosion coating to ensure long-term durability in an anaerobic environment. Micropores on the surface of the solid-liquid separator 19 allow the treated supernatant to pass through while preventing activated sludge from floating. The diversion assembly 4 is located in the gas phase space at the top of the reactor. Its diversion pipe 41 connects to the diversion port 12 located at the top of the reactor shell 1, forming a three-way structure on the side wall, connecting to the effluent, return, and gas collection pipes respectively. The annular water distribution pipe 14 is arranged parallel to the bottom of the reactor and fixed to the side wall by a bracket. Its distribution ensures that the influent is evenly diffused at the bottom of the reaction zone. Support frames 7 are provided at the bottom of the influent structure 5 and the sludge removal structure 6, and support feet 8 are provided at the bottom of the reactor shell 1. The support frames 7 and support feet 8 are placed on the ground to support the structures above.

[0034] like Figures 3 to 4 As shown, a screw jack 16 is fixedly installed at the bottom of the reactor shell 1. The drive end of the screw jack is connected to a screw 161, which is inserted into the reactor shell 1. A threaded section 164 is formed on the screw jack 161. A piston 162 that fits with the lower end of the sludge hopper 15 is threaded onto the threaded section 164. An elastic sealing sleeve 163 is formed on the outer wall of the piston 162. The piston 162 moves up and down in a screw along the threaded section 164. When the piston 162 rises to the top, the elastic sealing sleeve 163 just seals the lower opening of the sludge hopper 4.

[0035] As a further explanation of the above, the screw jack 16 adopts a worm gear transmission, which can precisely position the lifting stroke of the piston 162. The screw 161 is chrome-plated to improve wear resistance, and the threaded section 164 adopts a trapezoidal thread design to ensure smooth and reliable transmission. The piston 162 is made of stainless steel, and its outer elastic sealing sleeve 163 is made of fluororubber, which has good corrosion resistance and elastic recovery ability. When the piston rises to its limit position, the sealing sleeve 163 forms an interference fit with the lower edge of the sludge hopper 15, achieving a complete seal.

[0036] like Figure 3 As shown, waterproof sealing gaskets 9 are provided at the connection points between the horizontal stirrer 2, the vertical stirrer 3, and the screw jack 16 and the reactor shell 1, so that the connection points between each drive structure and the reactor shell 1 are waterproof and sealed.

[0037] like Figure 2 As shown, the horizontal stirrer 2 includes a first drive motor mounted and fixed on the top outer wall of the reactor shell 1. The drive end of the first drive motor is connected to a first drive shaft 21, and multiple sets of stirring rods 22 are equidistantly distributed along the axial direction on the first drive shaft 21. The vertical stirrer 3 includes a second drive motor mounted and fixed on the side wall of the reactor shell 1. The drive end of the second drive motor is connected to a second drive shaft 31, and stirring blades 32 are connected to the second drive shaft 31. The first drive shaft 21 and the second drive shaft 31 are perpendicular to each other. The coordinated operation of the horizontal and vertical stirring systems achieves complete mixing in the three-dimensional space within the reactor.

[0038] like Figures 2 to 3 As shown, the bottom of the annular water distribution pipe 14 has multiple water distribution heads 141 arranged in a circular array.

[0039] As a further explanation of the above, the water distribution head 141 adopts a nozzle design, which allows the sprayed water to quickly fall to the bottom of the reactor, promoting rapid mixing of the influent and sludge.

[0040] like Figure 1 As shown, the sludge extraction structure 6 is a pump body, with its input end being a sludge extraction pipe 62 connected to the sludge extraction port 13, and its output end being a sludge discharge pipe 61, used to discharge concentrated sludge from the reactor shell 1.

[0041] As a further explanation of the above, the sludge pumping structure 6 uses a screw pump, which has the ability to transport high-concentration sludge with minimal damage to sludge flocs. The sludge pumping pipe 62 uses a transparent, wear-resistant flexible hose for easy observation of the sludge discharge status. The sludge discharge pipe 61 is connected to the plant's sludge treatment system to achieve centralized sludge treatment. The pump body is linked with the controller 11 and can automatically start and stop discharging according to the set time program.

[0042] like Figure 1 As shown, the water inlet structure 5 is a pump body, with an inlet pipe 51 as its input end and a mixing pipe 52 as its output end. The flow regulating valve 53 is used to regulate the instantaneous flow rate of water pumped into the water body by the inlet pipe 51.

[0043] As a further explanation of the above, the flow regulating valve 53 is an electrically operated regulating valve that precisely adjusts the mixing ratio of the two water streams. Based on the actual temperature requirements inside the reactor detected by the temperature sensor 17, it dynamically adjusts the ratio of hot and cold water.

[0044] like Figure 5 As shown, the heating tube 45 has an inclined Z-shaped structure, with its central end perpendicular to the reactor shell 1. Its bottom end is connected to the mixing pipe 52, and its top end branches to connect to the return pipe 43 and the gas supply pipe 44. Multiple heating meshes 46 are evenly distributed along the axial direction inside its central end. The gas supply pipe 44 is connected to an exhaust pipe 47, and a pressure valve 48 is installed on the exhaust pipe 47. When the gas pressure inside the gas supply pipe 44 reaches a set threshold, the pressure valve 48 automatically opens to exhaust gas.

[0045] As a further explanation of the above, the heating tube 45 adopts a stainless steel sleeve structure with an external insulation layer. The internal heating mesh 46 is an armored heating element with a low surface load design to prevent local overheating during heating, which could lead to sludge coking. The Z-shaped structure increases the residence time of the fluid in the tube, improving heat exchange efficiency.

[0046] The working principle of this product is as follows: When the device is working, based on the internal temperature of the reactor detected by the temperature sensor 17, the controller 11 automatically adjusts the opening of the flow regulating valve 53 to control the instantaneous flow rate of the production wastewater delivered to the mixing pipe 52 through the inlet structure 5, thereby changing the ratio of hot water to cold water in the mixing pipe 52. The temperature-adjusted wastewater is then evenly distributed to the bottom of the reactor through the annular water distribution pipe 14, ensuring full contact with the anaerobic sludge.

[0047] The horizontal agitator 2 and the vertical agitator 3 work together to create a three-dimensional stirring flow field within the reactor, ensuring that the sludge remains in suspension and improving mass transfer efficiency. Organic matter in the wastewater decomposes under the action of anaerobic microorganisms to produce biogas. The rising bubbles carry the sludge to the top of the reactor, where gas-liquid-solid separation is achieved via the solid-liquid separator 19.

[0048] The treated supernatant is discharged through the outlet pipe 42 of the diversion assembly 4, and part of the liquid returns to the heating pipe 45 through the return pipe 43 for temperature regulation. The biogas produced and the water vapor generated during the heating process are collected through the gas delivery pipe 44. When the system pressure exceeds the set value, the pressure valve 48 automatically opens to release gas.

[0049] Under gravity, the sludge settles into the sludge hopper 15 for concentration. When sludge discharge is required, the screw jack 16 drives the piston 162 to rise, sealing the lower opening of the sludge hopper 15, and the sludge suction structure 6 discharges the concentrated sludge from the system. After sludge discharge, the piston 162 moves back to its initial position, ensuring that the sludge hopper 15 is connected to the bottom of the reactor.

[0050] The entire system operates automatically through controller 11, with each component working in coordination to ensure that the anaerobic reaction takes place under optimal conditions, achieving efficient and stable treatment of production wastewater.

[0051] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from its essential characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An anaerobic biological treatment reactor for industrial wastewater, comprising a reactor shell (1), wherein a solid-liquid separator (18) and a sludge hopper (15) are arranged from top to bottom on the inner side wall of the reactor shell (1), and a diversion assembly (4) is arranged on the top outer wall of the reactor shell (1), the diversion assembly (4) comprising a diversion pipe (41) communicating with the interior of the reactor shell (1), wherein an outlet pipe (42), a return pipe (43) and a gas supply pipe (44) are connected to the diversion pipe (41), and a heating pipe (45) is connected to the other end of the return pipe (43), characterized in that: It also includes a water inlet structure (5) and a sludge pumping structure (6) located on both sides of the reactor shell (1), and a controller (11) located outside the reactor shell (1). A temperature sensor (17) and an annular water distribution pipe (14) are provided in the upper area of ​​the sludge hopper (15). The temperature sensor (17) is electrically connected to the controller (11), and the annular water distribution pipe (14) is connected to the water inlet structure (5). A sludge pumping port (13) is formed in the lower area of ​​the sludge hopper (15), and the sludge pumping port (13) is connected to the sludge pumping structure (6). The water inlet structure (5) includes an inlet pipe (51) and a mixing pipe (52) connected to each other. The other end of the mixing pipe (52) is forked and connected to the annular water distribution pipe (14) and the heating pipe (45). A flow regulating valve (53) is provided on the mixing pipe (52) between the inlet pipe (51) and the heating pipe (45). The flow regulating valve (53) is electrically connected to the controller (11). The reactor shell (1) is also provided with at least one horizontal stirrer (2) and multiple vertical stirrers (3) perpendicular to the horizontal stirrer (2).

2. The anaerobic biological treatment reactor for industrial wastewater according to claim 1, characterized in that: A screw jack (16) is fixedly installed at the bottom of the reactor shell (1). The drive end of the screw jack is connected to a screw (161). The screw (161) is inserted into the reactor shell (1). A threaded section (164) is formed on the screw (161). A piston (162) that fits into the lower end of the sludge hopper (15) is threaded onto the threaded section (164). An elastic sealing sleeve (163) is formed on the outer wall of the piston (162). The piston (162) moves up and down along the threaded section (164). When the piston (162) rises to the top, the elastic sealing sleeve (163) seals the lower opening of the sludge hopper (15).

3. The anaerobic biological treatment reactor for industrial wastewater according to claim 2, characterized in that: Waterproof sealing gaskets (9) are provided at the connection points between the horizontal stirrer (2), the vertical stirrer (3), and the screw jack (16) and the reactor shell (1).

4. The anaerobic biological treatment reactor for industrial wastewater according to claim 1, characterized in that: The horizontal stirrer (2) includes a first drive motor installed and fixed on the top outer wall of the reactor shell (1). The drive end of the first drive motor is connected to a first drive shaft (21). Multiple sets of stirring rods (22) are distributed equidistantly along the axial direction on the first drive shaft (21).

5. The anaerobic biological treatment reactor for industrial wastewater according to claim 4, characterized in that: The vertical stirrer (3) includes a second drive motor installed and fixed on the side wall of the reactor shell (1). The drive end of the second drive motor is connected to a second drive shaft (31). A stirring fan blade (32) is connected to the second drive shaft (31). The first drive shaft (21) and the second drive shaft (31) are perpendicular to each other.

6. The anaerobic biological treatment reactor for industrial wastewater according to claim 1, characterized in that: The bottom of the annular water distribution pipe (14) has multiple water distribution heads (141) arranged in a circular array.

7. The anaerobic biological treatment reactor for industrial wastewater according to claim 1, characterized in that: The sludge extraction structure (6) is a pump body with an input end connected to a sludge extraction pipe (62) connected to the sludge extraction port (13) and an output end connected to a sludge discharge pipe (61), which is used to discharge the concentrated sludge from the reactor shell (1).

8. The anaerobic biological treatment reactor for industrial wastewater according to claim 1, characterized in that: The water inlet structure (5) is a pump body with an inlet pipe (51) at its input end and a mixing pipe (52) at its output end. The flow regulating valve (53) is used to regulate the instantaneous flow rate of the water pumped into the water body by the inlet pipe (51).

9. An anaerobic biological treatment reactor for industrial wastewater according to claim 8, characterized in that: The heating tube (45) has an inclined Z-shaped structure, with its central end perpendicular to the reactor shell (1), its bottom end connected to the mixing pipe (52), and its top end branched to connect the return pipe (43) and the gas supply pipe (44). Multiple heating grids (46) are evenly distributed along the axial direction inside its central end.

10. An anaerobic biological treatment reactor for industrial wastewater according to claim 1, characterized in that: The gas supply pipe (44) is connected to an exhaust pipe (47), and a pressure valve (48) is installed on the exhaust pipe (47). When the internal air pressure of the gas supply pipe (44) reaches a set threshold, the pressure valve (48) automatically opens to exhaust the gas.

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