Biofertilizer wastewater solid-liquid anaerobic treatment device

Abstract

The invention relates to the technical field of wastewater treatment devices, and discloses a bio-fertilizer wastewater solid-liquid anaerobic treatment device which comprises a wastewater treatment tank, a conical water distributor is arranged at the bottom of the inner wall of the wastewater treatment tank, a driving part is arranged above the conical water distributor, and a separation part is arranged at the upper end of the driving part. By means of the design of a conical frame, a liquid drainage hole and an annular groove, biogas bubble breaking and sludge particle separation are achieved, liquid is reversely injected when a lifting ring descends, liquid drainage hole dredging and sludge particle blowing-off are completed, self-cleaning circulation is formed, the solid-liquid separation efficiency is improved, and blockage is prevented; the rotating rod and the reciprocating screw rod are driven to run to drive the connecting ring, the hollow rod and the separation part to lift without extra power, so that the cooperative operation of bubble breaking, sludge interception and liquid backflow is finally realized, and the anaerobic treatment stability is optimized.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment devices, in particular to a solid-liquid anaerobic treatment device for bio-fertilizer wastewater. Background Art

[0002] Biofertilizer wastewater contains a large amount of organic matter, and direct discharge will cause environmental pollution. Anaerobic treatment technology has become a commonly used treatment method because it can degrade organic matter and produce biogas. However, traditional anaerobic treatment processes have problems such as long sludge retention time and low organic loading rate. At the same time, the solid content in biofertilizer wastewater is high and it is easy to clog pipes. Therefore, a special solid-liquid anaerobic treatment device is needed to improve treatment efficiency and stability.

[0003] The existing Chinese patent with announcement number CN113620504B discloses an anaerobic treatment device for intensive pig farming wastewater, including a shell, a water inlet pipe installed on one side of the shell, a water outlet pipe installed on the other side of the shell, a water flow mechanism installed in the shell, the water inlet pipe corresponds to one side of the water flow mechanism, a mounting cover mechanism is installed on the shell, the mounting cover mechanism includes a cover plate, a dosing piece, a separation assembly and an isolation plate, the cover plate is installed on the shell, the isolation plate is installed in the cover plate, the isolation plate divides the upper part of the cover plate into a pre-collection area, an exhaust pipe is installed on the cover plate, the separation assembly is installed in the cover plate, the dosing piece is fixedly installed on the cover plate, and one end of the dosing piece passes through the isolation plate. This invention enables the pig farming wastewater to degrade organic matter with maximum efficiency during anaerobic treatment, increases methane production, obtains cleaner methane gas, and facilitates the replacement of anaerobic sludge.

[0004] With respect to the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: in the existing anaerobic treatment devices and the above-mentioned comparative documents, when collecting biogas, the biogas will cause sludge disturbance, and some sludge particles will be wrapped on the bubbles, making it inconvenient to separate the sludge particles, resulting in the final collected biogas being impure and sludge loss. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that in the anaerobic treatment operation in the prior art, the biogas entrains bubbles, making it difficult to separate and collect them. To this end, we propose a solid-liquid anaerobic treatment device for biofertilizer wastewater.

[0006] To achieve the above-mentioned objectives, the present application adopts the following technical solution: a bio-fertilizer wastewater solid-liquid anaerobic treatment device, comprising a wastewater treatment tank, a water inlet pipe fixedly connected to the outside of the wastewater treatment tank, a conical water distributor provided at the bottom of the inner wall of the wastewater treatment tank, a driving component provided above the conical water distributor, and a separation component for breaking up biogas bubbles provided at the upper end of the driving component; The separation component includes a lifting ring that is slidably connected to the inner wall of the wastewater treatment tank. The bottom surface of the lifting ring is fixedly connected to a conical frame, the bottom surface of the conical frame is fixedly connected to a drainage hole, the bottom end of the conical frame is fixedly connected to a drainage pipe, and the outside of the drainage pipe is also fixedly connected to a conical cover. The upper surface of the conical cover is also provided with a ring groove. The conical cover cooperates with the conical frame and the drainage pipe to form a hollow groove. The inner wall of the lifting ring is fixedly connected to a horizontal plate, and the upper surface of the lifting ring is provided with an injection component for reflux liquid supply.

[0007] Preferably, the notch below the drainage hole is larger than the notch above it.

[0008] Preferably, a drainage groove is provided on the outside of the drainage pipe, an opening on one side of the drainage groove is arranged corresponding to the hollow groove, and an opening on the other side passes through the bottom side of the drainage pipe.

[0009] Preferably, the driving component includes a protective tube fixedly connected to the upper surface of the conical water distributor, a rotating rod is rotatably connected inside the protective tube, the bottom end of the rotating rod is arranged inside the conical water distributor and the outer side of the bottom end of the rotating rod is fixedly connected to the fan blade, a liquid seal is provided between the rotating rod and the protective tube, a reciprocating screw is fixedly connected to the upper surface of the rotating rod, a connecting ring is threadedly connected to the outer side of the reciprocating screw, the connecting ring is arranged inside the protective tube, a hollow rod is fixedly connected to the upper surface of the connecting ring, the hollow rod passes through the protective tube, a liquid seal is provided at the connection between the hollow rod and the protective tube, and the outer side of the hollow rod is fixedly connected to the reciprocating screw.

[0010] Preferably, a lifting groove is further provided on the bottom surface of the drain pipe, and the protection pipe is slidably connected to the inside of the lifting groove.

[0011] Preferably, a limiting groove is provided on the inner wall of the protection tube, a limiting block is fixedly connected to the outer side of the connecting ring, and the limiting block is slidably connected to the inside of the limiting groove.

[0012] Preferably, a fixing ring is fixedly connected to the inner wall of the wastewater treatment tank, the liquid injection assembly includes a push rod fixedly connected to the bottom surface of the fixing ring, a liquid storage tube is fixedly connected to the upper surface of the lifting ring, a pressure plate is fixedly connected to the bottom surface of the push rod, the pressure plate is slidably connected to the inside of the liquid storage tube, a one-way pressure valve B is provided on the bottom surface of the liquid storage tube, an arc-shaped liquid groove is opened on the inner side of the lifting ring, and the arc-shaped liquid groove is provided corresponding to the one-way pressure valve B.

[0013] Preferably, a one-way pressure valve A is provided on the outside of the liquid storage tube.

[0014] Preferably, a partition plate is fixedly connected between the conical frame and the conical cover, and the upper notch of the annular groove is larger than the lower notch.

[0015] Preferably, a three-phase separator is provided at the upper end of the wastewater treatment tank, and a water outlet pipe is fixedly connected to the outer side of the wastewater treatment tank, and the water outlet pipe is provided corresponding to the three-phase separator.

[0016] The technical effects and advantages of the present invention are as follows: In the present invention, on the one hand, the bubble crushing and reflux cleaning method is adopted, and the conical frame, drainage hole and ring groove design are used to realize the crushing of biogas bubbles and the separation of sludge particles. When the lifting ring descends, the liquid is reversely poured in to complete the dredging of the drainage hole and the blowing off of the sludge particles, forming a self-cleaning cycle, improving the solid-liquid separation efficiency and preventing blockage. On the other hand, a self-driven lifting and separation structure is adopted, which uses the incoming water flow to impact the fan blades, drive the rotating rod and reciprocating screw to operate, and drive the connecting ring, hollow rod and separation components to rise and fall without the need for additional power, realizing the coordinated operation of bubble crushing, sludge interception and liquid reflux, and optimizing the stability of anaerobic treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The disclosure of the present invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present invention. In the drawings, the same reference numerals are used to refer to the same components: Figure 1 Schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the wastewater treatment tank of the present invention; Figure 3 It is a schematic structural diagram of the separation component of the present invention; Figure 4 Schematic diagram of the structure of the liquid discharge pipe and the conical cover of the present invention; Figure 5 This is a schematic diagram of the top structure of the tapered frame of the present invention; Figure 6 This is a schematic diagram of the bottom structure of the tapered frame of the present invention; Figure 7 It is a schematic structural diagram of the driving component of the present invention; Figure 8 This is a schematic structural diagram of the liquid injection assembly of the present invention; Figure 9 This is a diagram of the water flow motion state from a cross-sectional perspective of the present invention.

[0018] Legend: 1. Wastewater treatment tank; 11. Water inlet pipe; 12. Water outlet pipe; 13. Three-phase separator; 2. Separation component; 21. Lifting ring; 22. Conical frame; 221. Drain hole; 222. Partition plate; 23. Horizontal plate; 24. Liquid injection assembly; 241. Liquid storage pipe; 242. Push rod; 243. Press plate; 244. One-way pressure valve A; 245. One-way pressure valve B; 246. Arc-shaped liquid trough; 25. Fixed ring; 26. Drain pipe; 261. Drain trough; 262. Lifting trough; 27. Conical cover; 271. Ring groove; 3. Conical water distributor; 4. Driving component; 41. Rotating rod; 42. Fan blade; 43. Reciprocating screw; 44. Connecting ring; 45. Hollow rod; 46. Protective tube. DETAILED DESCRIPTION

[0019] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0020] Reference Figure 1-Figure 5 As shown, the present invention provides a technical solution: a bio-fertilizer wastewater solid-liquid anaerobic treatment device, comprising a wastewater treatment tank 1, a water inlet pipe 11 fixedly connected to the outside of the wastewater treatment tank 1, a conical water distributor 3 provided at the bottom of the inner wall of the wastewater treatment tank 1, a driving component 4 provided above the conical water distributor 3, and a separation component 2 for crushing biogas bubbles provided at the upper end of the driving component 4; The separation component 2 includes a lifting ring 21 that is slidably connected to the inner wall of the wastewater treatment tank 1. The bottom surface of the lifting ring 21 is fixedly connected to a conical frame 22. The bottom surface of the conical frame 22 is fixedly connected to a drainage hole 221. The bottom end of the conical frame 22 is fixedly connected to a drainage pipe 26. The outer side of the drainage pipe 26 is also fixedly connected to a conical cover 27. The upper surface of the conical cover 27 is also provided with an annular groove 271. The conical cover 27 cooperates with the conical frame 22 and the drainage pipe 26 to form a hollow groove. The inner wall of the lifting ring 21 is fixedly connected to a horizontal plate 23. The upper surface of the lifting ring 21 is provided with a liquid injection component 24 for reflux liquid supply. During the anaerobic treatment process, the driving component 4 is used to drive the horizontal plate 23 to rise and fall, thereby driving the lifting ring 21 and the conical frame 2 below. 2 is lifted and lowered, and the wastewater and biogas bubbles flowing upward enter between the conical frame 22 and the conical cover 27 through the drainage hole 221. When the bubbles pass through the drainage hole 221, the larger bubbles burst, and the sludge particles contained therein are scattered. Some particles are intercepted at the notch of the drainage hole 221. The sludge particles entering the hollow groove slide down the top surface of the conical frame 22 under the action of gravity, while the wastewater and bubbles are discharged upward through the annular groove 271 under the action of buoyancy and their initial power. Subsequently, when the lifting ring 21 descends, the liquid above the wastewater treatment tank 1 is reversely poured into the annular groove 271, which blows away the sludge particles blocking the drainage hole 221 on the one hand, and blows off the sludge particles on the top surface of the conical frame 22 on the other hand.

[0021] Reference Figures 1-8 As shown, in this embodiment: the notch below the drainage hole 221 is larger than the notch above it. By setting the drainage hole 221 with a small upper opening and a large lower opening, when the conical frame 22 moves downward, the bubbles gather into the drainage hole 221, which is convenient for the bubbles to burst. At the same time, larger and more sludge particles will be blocked at the notch of the drainage hole 221 to prevent the sludge particles from continuing to rise.

[0022] A drainage groove 261 is provided on the outside of the drainage pipe 26. An opening on one side of the drainage groove 261 is arranged corresponding to the hollow groove, and an opening on the other side passes through the bottom side of the drainage pipe 26. Through the arrangement of the drainage groove 261, when the drainage pipe 26 moves downward, part of the wastewater can directly enter the drainage pipe 26 through the bottom opening of the drainage groove 261 to assist in wastewater transportation. A blocking plate is provided on the inner wall of the drainage groove 261 to assist in bursting bubbles. When the conical frame 22 moves upward, the liquid above enters the hollow groove through the annular groove 271, and the sludge particles in the hollow groove are discharged downward through the drainage groove 261.

[0023] The driving component 4 includes a protective tube 46 fixedly connected to the upper surface of the conical water distributor 3, a rotating rod 41 is rotatably connected inside the protective tube 46, the bottom end of the rotating rod 41 is arranged inside the conical water distributor 3 and the outer side of the bottom end of the rotating rod 41 is fixedly connected to the fan blade 42, a liquid seal is provided between the rotating rod 41 and the protective tube 46, a reciprocating screw rod 43 is fixedly connected to the upper surface of the rotating rod 41, the outer side of the reciprocating screw rod 43 is threadedly connected to the connecting ring 44, the connecting ring 44 is arranged inside the protective tube 46, and a hollow rod 45 is fixedly connected to the upper surface of the connecting ring 44. The rod 45 passes through the protective tube 46, and a liquid seal is provided at the connection between the hollow rod 45 and the protective tube 46. The outer side of the hollow rod 45 is fixedly connected to the reciprocating screw rod 43, and the water outlet of the water inlet pipe 11 is corresponding to the fan blade 42. During the water injection process, the fan blade 42 and the rotating rod 41 are driven to rotate by the impact of the water flow, and the protective tube 46 plays a protective role. The reciprocating screw rod 43 is driven to rotate synchronously through the rotating rod 41, and then the connecting ring 44 is driven to rise and fall repeatedly, and the hollow rod 45 rises and falls accordingly, thereby driving the cross plate 23 and the conical frame 22 to achieve the lifting effect.

[0024] A lifting groove 262 is further provided on the bottom surface of the drain pipe 26 , and the protection tube 46 is slidably connected to the inside of the lifting groove 262 . The provision of the protection tube 46 ensures the stable lifting of the conical frame 22 and the lifting ring 21 .

[0025] A limiting groove is provided on the inner wall of the protection tube 46 , and a limiting block is fixedly connected to the outer side of the connecting ring 44 , and the limiting block is slidably connected to the inside of the limiting groove. The setting of the limiting block and the limiting groove ensures the stable lifting and lowering of the connecting ring 44 .

[0026] A fixing ring 25 is fixedly connected to the inner wall of the wastewater treatment tank 1, and the liquid injection assembly 24 includes a push rod 242 fixedly connected to the bottom surface of the fixing ring 25. A liquid storage tube 241 is fixedly connected to the upper surface of the lifting ring 21, and a pressure plate 243 is fixedly connected to the bottom surface of the push rod 242. The pressure plate 243 is slidably connected to the inside of the liquid storage tube 241. A one-way pressure valve B245 is provided on the bottom surface of the liquid storage tube 241. An arc-shaped liquid groove 246 is provided on the inside of the lifting ring 21. The arc-shaped liquid groove 246 is corresponding to the one-way pressure valve B245. When the lifting ring 21 moves upward, the lifting ring 21 drives the liquid storage tube 241 to move upward, and the pressure plate 243 is used to squeeze the liquid inside the liquid storage tube 241, and the liquid is discharged from the arc-shaped liquid groove 246 through the one-way pressure valve B245. The liquid discharged from the arc-shaped liquid groove 246 is discharged from the hollow groove, which is used to assist in discharging sludge particles in the hollow groove and the sludge particles in the drainage hole 221.

[0027] A one-way pressure valve A244 is provided on the outside of the liquid storage pipe 241, and the one-way pressure valve A244 is connected to the inside of the liquid storage pipe 241. Through the setting of the one-way pressure valve A244, when the lifting ring 21 moves downward, the liquid storage pipe 241 moves downward to generate negative pressure inside the liquid storage pipe 241, and the one-way pressure valve A244 is used to pump liquid, and the treated wastewater is pumped into the liquid storage pipe 241 to replenish liquid for subsequent discharge.

[0028] A partition plate 222 is fixedly connected between the conical frame 22 and the conical cover 27. The upper notch of the annular groove 271 is larger than the lower notch. The partition plate 222 is set to separate the hollow groove, which is convenient for the discharge of bubbles and the discharge of liquid. The upper notch of the annular groove 271 is larger than the lower notch, which can facilitate more liquid to pass into the interior of the annular groove 271 when the lifting ring 21 moves upward.

[0029] A three-phase separator 13 is provided at the upper end of the wastewater treatment tank 1, and an outlet pipe 12 is fixedly connected to the outside of the wastewater treatment tank 1. The outlet pipe 12 is arranged corresponding to the three-phase separator 13. The three-phase separator 13 is used to collect biogas, and the outlet pipe 12 is used to discharge the treated liquid.

[0030] like Figure 9 As shown, Figure 9 The left side shows the process of the separation component 2 descending. The injection assembly 24 is in the suction state, and the water inlet pipe 11 cooperates with the separation component 2 to descend. Figure 9 The right side shows the rising process of the separation component 2. Part of the water is pushed upward and discharged from the water outlet pipe 12, and the other part enters the hollow tank to assist in flushing. At the same time, the liquid injection component 24 presses water into the tank for flushing.

[0031] Working principle: During the wastewater treatment process, the water outlet of the water inlet pipe 11 is set corresponding to the fan blade 42. The fan blade 42 and the rotating rod 41 are driven to rotate by the impact of the water flow. The protective tube 46 plays a protective role. The reciprocating screw rod 43 is driven to rotate synchronously by the rotating rod 41, thereby driving the connecting ring 44 to rise and fall repeatedly. The hollow rod 45 rises and falls accordingly to drive the cross plate 23 and the conical frame 22 to achieve the lifting effect. When the conical frame 22 descends, the upward surging wastewater and biogas bubbles enter between the conical frame 22 and the conical cover 27 through the drainage hole 221. When the bubbles pass through the drainage hole 221, the larger bubbles burst. , the sludge particles wrapped inside are scattered, and some particles are intercepted at the notch of the drainage hole 221. The sludge particles entering the hollow groove slide down the top surface of the conical frame 22 under the action of gravity, and the wastewater and bubbles are discharged upward through the annular groove 271 under the action of buoyancy and their initial power. Subsequently, when the lifting ring 21 descends, the liquid above the wastewater treatment tank 1 is reversely poured into the annular groove 271, which on the one hand blows away the sludge particles blocking the drainage hole 221, and on the other hand discharges the sludge particles on the top surface of the conical frame 22 downward through the drainage groove 261, thereby breaking the bubbles and reducing the adhesion of sludge particles. In addition, when the lifting ring 21 moves upward, the lifting ring 21 is used to drive the liquid storage tube 241 to move upward, and the pressure plate 243 is used to squeeze the liquid inside the liquid storage tube 241, and the liquid is discharged from the arc-shaped liquid groove 246 through the one-way pressure valve B245. The liquid discharged from the arc-shaped liquid groove 246 is discharged from the hollow groove, which is used to assist in discharging the sludge particles in the hollow groove and the sludge particles in the drainage hole 221. When the lifting ring 21 moves downward, the liquid storage tube 241 is moved downward to generate negative pressure inside the liquid storage tube 241, and the one-way pressure valve A244 is used to pump out liquid and replenish fluid.

[0032] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical idea of ​​the present invention, and these deformations and modifications should all fall within the protection scope of the present invention.

Claims

1. A biofertilizer wastewater solid-liquid anaerobic treatment device, characterized in that: It includes a wastewater treatment tank, the outer side of which is fixedly connected to a water inlet pipe, a conical water distributor is provided at the bottom of the inner wall of the wastewater treatment tank, a driving component is provided above the conical water distributor, and a separation component for breaking biogas bubbles is provided on the upper end of the driving component; The separation component includes a lifting ring slidably connected to the inner wall of the wastewater treatment tank, the bottom surface of the lifting ring is fixedly connected to a conical frame, the bottom surface of the conical frame is fixedly connected to a drainage hole, the bottom end of the conical frame is fixedly connected to a drainage pipe, the outer side of the drainage pipe is also fixedly connected to a conical cover, the upper surface of the conical cover is also provided with an annular groove, the conical cover cooperates with the conical frame and the drainage pipe to form a hollow groove, the inner wall of the lifting ring is fixedly connected to a horizontal plate, and the upper surface of the lifting ring is provided with an injection component for reflux liquid supply.

2. The biofertilizer wastewater solid-liquid anaerobic treatment device according to claim 1, characterized in that: The notch below the drainage hole is larger than the notch above the drainage hole.

3. The biofertilizer wastewater solid-liquid anaerobic treatment device according to claim 1, characterized in that: A drainage groove is provided on the outside of the drainage pipe, one opening of the drainage groove is arranged corresponding to the hollow groove, and the other opening passes through the bottom side of the drainage pipe.

4. The biofertilizer wastewater solid-liquid anaerobic treatment device according to claim 1, characterized in that: The driving component includes a protective tube fixedly connected to the upper surface of the conical water distributor, a rotating rod is rotatably connected inside the protective tube, the bottom end of the rotating rod is arranged inside the conical water distributor and the outer side of the bottom end of the rotating rod is fixedly connected to the fan blade, a liquid seal is provided between the rotating rod and the protective tube, a reciprocating screw is fixedly connected to the upper surface of the rotating rod, a connecting ring is threadedly connected to the outer side of the reciprocating screw, the connecting ring is arranged inside the protective tube, a hollow rod is fixedly connected to the upper surface of the connecting ring, the hollow rod passes through the protective tube, a liquid seal is provided at the connection between the hollow rod and the protective tube, and the outer side of the hollow rod is fixedly connected to the reciprocating screw.

5. The bio-fertilizer wastewater solid-liquid anaerobic treatment device according to claim 4, characterized in that: The bottom surface of the liquid discharge pipe is also provided with a lifting groove, and the protection tube is slidably connected to the inside of the lifting groove.

6. The bio-fertilizer wastewater solid-liquid anaerobic treatment device according to claim 5, characterized in that: A limiting groove is provided on the inner wall of the protection tube, a limiting block is fixedly connected to the outer side of the connecting ring, and the limiting block is slidably connected to the inside of the limiting groove.

7. The bio-fertilizer wastewater solid-liquid anaerobic treatment device according to claim 1, characterized in that: A fixing ring is fixedly connected to the inner wall of the wastewater treatment tank, and the liquid injection assembly includes a push rod fixedly connected to the bottom surface of the fixing ring. A liquid storage tube is fixedly connected to the upper surface of the lifting ring, and a pressure plate is fixedly connected to the bottom surface of the push rod. The pressure plate is slidably connected to the inside of the liquid storage tube. A one-way pressure valve B is provided on the bottom surface of the liquid storage tube, and an arc-shaped liquid groove is opened on the inner side of the lifting ring. The arc-shaped liquid groove is arranged corresponding to the one-way pressure valve B.

8. The bio-fertilizer wastewater solid-liquid anaerobic treatment device according to claim 7, characterized in that: A one-way pressure valve A is provided on the outside of the liquid storage tube.

9. The bio-fertilizer wastewater solid-liquid anaerobic treatment device according to claim 1, characterized in that: A partition plate is fixedly connected between the conical frame and the conical cover, and the upper notch of the annular groove is larger than the lower notch.

10. The bio-fertilizer wastewater solid-liquid anaerobic treatment device according to claim 1, characterized in that: A three-phase separator is provided at the upper end of the wastewater treatment tank, and a water outlet pipe is fixedly connected to the outer side of the wastewater treatment tank. The water outlet pipe is provided corresponding to the three-phase separator.

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