Yellow serofluid treatment facility based on black film pool fermentation technology

Abstract

The invention relates to the technical field of wastewater treatment, and discloses a yellow serofluid treatment facility based on a black membrane pool fermentation technology, which comprises a plurality of independent fermentation pools, a layer of bottom membrane is arranged in each fermentation pool and clings to the pool wall, and a pressing mechanism I for pressing the bottom membrane is arranged at the pool top of each fermentation pool. The pressing mechanism I comprises a movable pressing plate and a lifting unit for driving the movable pressing plate to lift, and the movable pressing plate is used for pressing the edge of the bottom film on the top of the fermentation tank. An annular groove is formed in the inner ring of the movable pressing plate, a film rolling cylinder is arranged in the annular groove, a rolled film on the film rolling cylinder is unfolded to form an upper film and can seal the top of the fermentation tank, and a fermentation space is formed between the upper film and the bottom film. The black film pool for treating the yellow serofluid can be conveniently and rapidly built, the edge of a black film can be rapidly pressed and sealed, the structural design is compact, modular design is adopted, space can be effectively saved, and the scale can be correspondingly adjusted according to the sewage amount.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a yellow slurry water treatment facility based on black film pool fermentation technology. Background Art

[0002] Yellow pulp water is a high-concentration organic wastewater generated during the processing of soy products. It has the characteristics of high COD content and good biodegradability. It is usually treated by black film anaerobic fermentation process. As a highly efficient biogas fermentation facility, the black film pool is formed by laying a high-density polyethylene (HDPE) anti-seepage membrane in the underground pool body and covering it with a black biogas membrane to form a closed fermentation space. It can recover biogas energy while achieving wastewater treatment, and has the advantages of low construction cost and high gas production efficiency.

[0003] However, the existing black film pool still has the following technical bottlenecks in practical application: First, the laying and compaction efficiency of the black film is low, and the sealing is difficult to ensure. When constructing a traditional black film pool, it is necessary to dig an anchor trench around the pool body, manually bury the edge of the black film in the trench and backfill and compact it with soil and rocks, or use sandbags and heavy objects to stack and fix it. This method not only has a long construction period and high labor costs, but the compaction effect is greatly affected by the operating level. It is easy for the black film to loosen or the sealing to fail due to uneven local force, causing problems such as biogas leakage and odor escape. In addition, the anchor trench structure occupies additional land area, resulting in reduced space utilization.

[0004] Second, the pool structure is fixed and difficult to expand flexibly. Most of the existing black film pools are single structures that are cast or excavated at one time, and their volume is limited at the beginning of construction. When the treatment scale needs to be increased, it can only be achieved by building a new pool, which leads to waste of land resources, doubled construction costs, and complicated pipeline connections between the old and new pools, which significantly increases the difficulty of operation and maintenance.

[0005] Third, the structure of the gas guide system is redundant and difficult to maintain. The traditional gas guide mechanism requires the independent laying of multiple sets of gas guide pipes on the top of the black film, and the connection to the main pipeline through external branch pipes. This design not only requires the additional installation of pipe brackets and sealing components, increasing material and construction costs, but also easily causes cracking of the gas guide pipe interface and gas leakage due to deformation of the black film. In addition, the pipeline is exposed to the open air environment for a long time and is susceptible to UV aging or clogging by debris, affecting the biogas collection efficiency and system stability.

[0006] The above problems restrict the large-scale application of black film pool technology in the field of yellow slurry water treatment. Therefore, it is urgent to develop a black film pool treatment facility that is easy to construct quickly, supports modular expansion, and has a highly integrated gas guide structure to improve engineering efficiency, reduce operation and maintenance costs, and adapt to dynamically changing treatment needs. Summary of the invention

[0007] In order to solve the technical problems raised in the background technology, the present invention provides a yellow slurry water treatment facility based on black film pool fermentation technology.

[0008] The present invention is implemented by the following technical scheme: a yellow slurry water treatment facility based on black film pool fermentation technology, comprising a plurality of independent fermentation pools, a bottom film is provided inside the fermentation pool close to the pool wall, and a pressing mechanism for pressing the bottom film is provided at the top of the fermentation pool.

[0009] The first pressing mechanism comprises a movable pressing plate and a lifting unit for driving the movable pressing plate to rise and fall. The movable pressing plate is used to press the edge of the bottom film against the top of the fermentation tank.

[0010] An annular groove is provided in the inner circle of the movable pressure plate, and a film roll is provided in the annular groove. When the film roll on the film roll is unfolded, an upper film is formed and can seal the top of the fermentation tank. A fermentation space is formed between the upper film and the bottom film, and a clamping mechanism 2 for pressing the upper film against the top of the fermentation tank is movably provided on the movable pressure plate.

[0011] The inner wall of the fermentation tank is provided with a plurality of vents, the bottom membrane is provided with notches corresponding to the vents, and the fermentation tank is also provided with an air guide mechanism connected to the vents to guide out the biogas formed in the fermentation space.

[0012] The present invention has multiple independently arranged fermentation tanks, and the number of fermentation tanks can be increased or decreased according to the amount of wastewater. A pressing mechanism 1 and a pressing mechanism 2 are arranged on the top of the fermentation tank, so that the bottom film and the upper film can be quickly laid in the fermentation tank and then fixed. At the same time, the sealing effect is good after pressing, which is easy to ferment yellow slurry water.

[0013] As a further improvement of the above scheme, the cross-section of the fermentation tank is square, and connecting holes are opened at the four corners of the top surface of the fermentation tank, an elastic buffer unit is arranged at the bottom of the connecting hole, and a connecting column corresponding to the connecting hole is arranged on the bottom surface of the movable pressure plate. There are four installation cavities distributed circumferentially in the pool wall of the fermentation tank, each installation cavity is provided with a lifting unit, and the installation cavity and the adjacent connecting holes are connected through a connecting hole.

[0014] Through the above structure, the connection between the movable pressing plate and the fermentation tank is more reliable, and it is more convenient to install and use.

[0015] As a further improvement of the above scheme, the lifting unit includes a cross bar movably arranged in the installation cavity, a lifting drive rod fixed in the installation cavity and connected to the cross bar, the cross bar is a hollow rod, and docking rods are movably mounted on both ends of the cross bar. A docking drive component for driving the docking rod to extend and retract is arranged in the cross bar, and the docking rod can movably pass through the connecting hole, and a docking hole for connecting with the docking rod is opened on the side wall of the connecting column.

[0016] The movable pressing plate can be effectively lifted by the lifting driving rod so as to press the bottom film after it is laid.

[0017] As a further improvement of the above solution, the elastic buffer unit includes a columnar spring and a pressure plate fixed on the top of the columnar spring. The outer diameter of the columnar spring is smaller than the diameter of the connecting hole. The top surface of the pressure plate is used to contact the bottom end of the connecting column. By designing the elastic buffer unit, it is possible to prevent the movable pressure plate from directly pressing on the pool top before the bottom membrane is laid. In this way, when the bottom membrane is laid, the edge of the bottom membrane can quickly extend between the movable pressure plate and the pool top, so as to facilitate the next step of pressing and fixing the bottom membrane.

[0018] As a further improvement of the above solution, the bottom surface of the movable pressing plate is provided with an annular lower boss, the top surface of the fermentation tank is provided with a pressing groove, the edge of the bottom film is located in the pressing groove and is pressed by the lower boss, so as to further improve the sealing performance of the bottom film.

[0019] As a further improvement of the above scheme, the second clamping mechanism includes a movable frame and a plurality of clamping units circumferentially distributed on the movable pressure plate. The movable frame is arranged on the inner side of the movable pressure plate, and the plurality of clamping units press the movable frame against the top of the pool from above to seal the edge position of the expanded upper mold.

[0020] By using a clamping mechanism that can be operated manually, on the one hand, avoiding the use of intelligently controlled electrical components can save costs. On the other hand, since there may be moisture on site, using too many electrical components can easily lead to safety accidents and the electrical components are easily damaged.

[0021] As a further improvement of the above scheme, an annular upper boss is provided on the top of the movable pressure plate, and the clamping unit includes a bracket fixed on the upper boss and a rotating rod rotatably connected to the bracket. A back plate is provided on the side of the rotating rod close to the movable frame through a pin shaft, and the bottom surface of the back plate can contact the top surface of the movable frame. The clamping unit also includes a lifting assembly to lift the end of the rotating rod away from the movable frame upward.

[0022] The clamping mechanism adopted in this solution is easy to operate. By manually lifting the lifting assembly, each rotating rod on one side can be lifted upward, so that the movable pressure plate presses the movable frame downward.

[0023] As a further improvement of the above scheme, the lifting assembly includes a push rod, both ends of which are connected to swing arms, the other ends of the swing arms are respectively rotatably connected to the top of the fermentation tank, and the bottom surface of the rotating rod is provided with a slot for clamping the push rod.

[0024] The above-mentioned lifting assembly is adopted, which is convenient and quick to operate and can effectively save working time.

[0025] As a further improvement of the above scheme, the air guide mechanism includes an air guide tube, a built-in air tube arranged in the air outlet, and a sleeve arranged at the outer port of the air outlet, the top end of the air guide tube is connected to the movable pressure plate, the bottom end of the air guide tube passes through the cross bar and extends into the installation cavity, the side wall of the air guide tube is provided with a socket, one end of the built-in air tube is connected to the socket, the sleeve is detachably connected to the air outlet, and the inner end of the sleeve is in contact with the other end of the built-in air tube.

[0026] The air guide mechanism proposed in the present invention first places the built-in air pipe into the air outlet before the base membrane is installed. After the base membrane is installed, a notch is opened at the position of the air outlet by a tool, and then the sleeve and the air outlet are installed and fixed through the notch, thereby pushing the built-in air pipe to move inward, so that the inner end of the air and the jack on the air guide pipe cooperate, and finally form a passage that can dredge the biogas.

[0027] As a further improvement of the above scheme, the sleeve is a cylinder with a thread on the outer wall, the sleeve and the air outlet are spirally connected, and an annular pressure plate is also provided on the outside of the sleeve, which is used to press the bottom membrane against the pool wall, and an air outlet cylinder connected to the top of the air guide pipe is also fixed on the movable pressure plate, and the air outlet cylinder is used to connect to an external gas storage device for receiving biogas.

[0028] Compared with the prior art, the present invention has the following beneficial effects: The yellow slurry water treatment facility of the black film pool fermentation technology proposed in the present invention comprises a plurality of independent fermentation pools, a bottom film is provided inside the fermentation pool close to the pool wall, a film roll cylinder for laying an upper film is provided on the top of the fermentation pool, and a clamping mechanism 1 and a clamping mechanism 2 are respectively provided to clamp and seal the bottom film and the upper film, so as to quickly form a fermentation space. The modular design can be infinitely expanded according to the amount of sewage, and the structural design is compact, and the operation is simple and convenient. The air guide mechanism and the pool body are integrated in design, which is convenient for quickly leading out the biogas formed in the fermentation space. At the same time, the present invention adopts relatively few electrical components, which can effectively save production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a stereoscopic diagram of the overall structure of a single fermentation tank in the yellow pulp water treatment facility proposed by the present invention; Figure 2 for Figure 1 The main view of the structure; Figure 3 for Figure 1 A top view of the structure in the middle; Figure 4 for Figure 1 A in the enlarged view; Figure 5 for Figure 2 Cross-sectional view at BB; Figure 6 for Figure 3Cross-sectional view at CC of ; Figure 7 It is a partial structural cross-sectional view after the clamping mechanism 1 and the clamping mechanism 2 of the present invention respectively clamp the bottom film and the upper film.

[0030] Description of main symbols: 1. Fermentation tank; 2. Movable pressure plate; 3. Upper boss; 4. Connecting column; 5. Docking hole; 6. Air guide tube; 7. Movable frame; 8. Air outlet; 9. Docking rod; 10. Connecting hole; 11. Cross bar; 12. Mounting cavity; 13. Lifting drive rod; 14. Air outlet; 15. Pressing unit; 16. Pressing groove; 18. Lower boss; 19. Annular groove; 20. Film roll; 21. Push rod; 22. Connecting hole; 23. Docking drive member; 24. Slot; 25. Rotating rod; 26. Fixed foot plate; 27. Butt plate; 28. Bracket; 29. ​​Upper film; 30. Bottom film; 31. Built-in air pipe; 32. Sleeve; 33. Annular pressure plate. DETAILED DESCRIPTION

[0031] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0032] Example: Refer to Figure 1 - Figure 7 The present invention proposes a yellow pulp water treatment facility based on black film pool fermentation technology, comprising a plurality of independent fermentation pools 1, a bottom film 30 is provided in the fermentation pool 1 close to the pool wall, and a pressing mechanism 1 for pressing the bottom film 30 is provided at the top of the fermentation pool 1. The fermentation pool 1 can be formed by welding stainless steel plates and steel frames, and its size is selected according to actual conditions. In specific work, a square pool body with a specification of 5m×5m and 7.5m×7.5m is preferred, and the width of the working table around the pool top should be greater than 1m.

[0033] The first pressing mechanism includes a movable pressing plate 2 and a lifting unit for driving the movable pressing plate 2 to lift and lower. The movable pressing plate 2 is used to press the edge of the bottom film 30 against the top of the fermentation tank 1. An annular groove 19 is provided in the inner circle of the movable pressing plate 2. A film roll 20 is provided in the annular groove 19. A black film is wound on the film roll 20. The black film is made of HDPE or LDPE. The film on the film roll 20 is unrolled to form an upper film 29 and can seal the top of the fermentation tank 1. A fermentation space is formed between the upper film 29 and the bottom film 30. A second pressing mechanism for pressing the upper film 29 against the top of the fermentation tank 1 is movably provided on the movable pressing plate 2.

[0034] The inner wall of the fermentation tank 1 is provided with a plurality of vent holes 14, and the bottom film 30 is provided with notches corresponding to the vent holes 14. The fermentation tank 1 is also provided with an air guide mechanism connected with the vent holes 14 to guide out the biogas formed in the fermentation space. The present invention uses a plurality of independently arranged fermentation tanks 1, and the number of fermentation tanks 1 can be increased or decreased according to the amount of wastewater. The fermentation tanks 1 can be spliced ​​with each other to form a black film tank treatment system composed of a plurality of fermentation tanks 1, and a pressing mechanism 1 and a pressing mechanism 2 are arranged on the top of the fermentation tank 1, so as to quickly lay the bottom film 30 and the upper film 29 in the fermentation tank 1 and fix them. At the same time, the sealing effect is good after pressing, and the yellow pulp water is easy to ferment.

[0035] As an optional embodiment of the present invention, the cross section of the fermentation tank 1 is square (rectangular or circular, but a circular tank body cannot be closely spliced, so a buffer zone can be left between the fermentation tanks 1 to facilitate the movement of people), and the four corners of the top surface of the fermentation tank 1 are provided with connecting holes 10, the bottom of the connecting hole 10 is provided with an elastic buffer unit, the bottom surface of the movable pressure plate 2 is provided with a connecting column 4 corresponding to the connecting hole 10, and four installation cavities 12 are distributed circumferentially in the pool wall of the fermentation tank 1, each installation cavity 12 is provided with a lifting unit, and the installation cavity 12 and the adjacent connection hole 10 are connected through a connecting hole 22. A sealing cover plate is detachably installed at the top opening of the installation cavity 12 to protect the structure therein.

[0036] Through the above structure, the connection between the movable pressing plate 2 and the fermentation tank 1 is more reliable, and it is more convenient to install and use.

[0037] In the present embodiment, the lifting unit comprises a cross bar 11 movably arranged in the installation cavity 12, a lifting drive rod 13 fixed in the installation cavity 12 and connected to the cross bar 11, the lifting drive rod 13 can be a hydraulic rod, a cylinder or an electric push rod, the cross bar 11 is a hollow rod, and docking rods 9 are movably sleeved on both ends of the cross bar 11, and a docking drive member 23 for driving the docking rod 9 to extend and retract is arranged in the cross bar 11. The docking drive member 23 can be a miniature electric push rod, and the docking rod 9 can movably pass through the connecting hole 22, and a docking hole 5 for plugging with the docking rod 9 is opened on the side wall of the connecting column 4.

[0038] The present invention can effectively lift the movable pressing plate 2 through the lifting driving rod 13 so as to compact the bottom film 30 after it is laid.

[0039] In this solution, the elastic buffer unit includes a columnar spring and a pressure plate fixed on the top of the columnar spring (the above structure is not shown in the drawings of the present invention, but it does not affect the understanding of this solution by those skilled in the art). The outer diameter of the columnar spring is smaller than the diameter of the connecting hole 10, and the top surface of the pressure plate is used to contact the bottom end of the connecting column 4. By designing the elastic buffer unit, it is possible to prevent the movable pressure plate 2 from directly pressing on the pool top before the bottom membrane 30 is laid. In this way, when the bottom membrane 30 is laid, the edge of the bottom membrane 30 can quickly extend between the movable pressure plate 2 and the pool top, so as to facilitate the next step of pressing and fixing the bottom membrane 30.

[0040] Furthermore, the bottom surface of the movable pressing plate 2 is provided with an annular lower boss 18, and the top surface of the fermentation tank 1 is provided with a pressing groove 16, and the edge of the bottom film 30 is located in the pressing groove 16 and is pressed by the lower boss 18. In this way, the sealing performance of the bottom film 30 can be further improved.

[0041] In this scheme, the second clamping mechanism includes a movable frame 7 and a plurality of clamping units 15 circumferentially distributed on the movable pressure plate 2. The movable frame 7 is arranged on the inner side of the movable pressure plate 2. The plurality of clamping units 15 press the movable frame 7 against the top of the pool from above to seal the edge position of the unfolded upper membrane 29.

[0042] The movable frame 7 in this solution can be made of plastic products, and the lightweight design is convenient for specific construction. At the same time, the longitudinal section of the movable frame 7 can be in the shape of an "I" to have good compressive strength, and a non-slip sealing layer is arranged on the bottom surface thereof to better compress and seal the edge of the upper film 29. The present invention utilizes a manually operated clamping mechanism 2, which can save costs by avoiding the use of intelligently controlled electrical components on the one hand, and on the other hand, due to the possible presence of moisture on site, the use of too many electrical components can easily lead to safety accidents, and the electrical components are easily damaged.

[0043] As a further improvement of the above scheme, the top of the movable pressure plate 2 is provided with an annular upper boss 3, and the clamping unit 15 includes a bracket 28 fixed on the upper boss 3, a rotating rod 25 rotatably connected to the bracket 28, and a side of the rotating rod 25 close to the movable frame 7 is provided with a backing plate 27 through a pin rotation, and the bottom surface of the backing plate 27 can contact the top surface of the movable frame 7. The clamping unit 15 also includes a lifting assembly to lift the end of the rotating rod 25 away from the movable frame 7 upward. Among them, a fixed foot plate 26 is provided at the bottom of the bracket 28, and the fixed foot plate 26 is connected to the upper boss 3 by bolts.

[0044] The clamping unit 15 used in this solution is easy to operate. By manually lifting the lifting assembly, each rotating rod 25 on one side can be lifted upward, so that the support plate 27 presses the movable frame 7 downward.

[0045] In this solution, the lifting assembly includes a top rod 21, both ends of the top rod 21 are connected to swing arms, the other ends of the swing arms are respectively rotatably connected to the top of the fermentation tank 1, and the bottom surface of the rotating rod 25 is provided with a slot 24 for clamping the top rod 21. The above-mentioned lifting assembly is convenient and quick to operate, which can effectively save working time.

[0046] It is worth mentioning that the air guide mechanism includes an air guide tube 6, a built-in air tube 31 arranged in the air outlet 14, and a sleeve 32 arranged at the outer port of the air outlet 14. The top of the air guide tube 6 is connected to the movable pressure plate 2, the bottom end of the air guide tube 6 passes through the cross bar 11 and extends into the installation cavity 12, and a socket is provided on the side wall of the air guide tube 6. One end of the built-in air tube 31 is connected to the socket, and the sleeve 32 is detachably connected to the air outlet 14, and the inner end of the sleeve 32 is in contact with the other end of the built-in air tube 31.

[0047] When laying the bottom film 30 of the present invention, an external negative pressure mechanism can be used to evacuate the installation cavity 12. Since the installation cavity 12 and the air outlet 14 are connected, the air in the tank body below the bottom film 30 is sucked away, making it easier for the bottom film 30 to be tightly adsorbed on the inner wall of the fermentation tank 1.

[0048] The air guide mechanism proposed in the present invention first places the built-in air pipe 31 into the air outlet hole 14 before the base film 30 is installed. After the base film 30 is installed, a notch is opened at the position of the air outlet hole 14 by a tool, and then the sleeve 32 and the air outlet hole 14 are installed and fixed through the notch, thereby pushing the built-in air pipe 31 to move inward, so that the inner end of the air and the jack on the air guide pipe 6 cooperate, and finally form a passage that can dredge the biogas.

[0049] Furthermore, the sleeve 32 is a cylinder with a threaded outer wall, the sleeve 32 and the air outlet 14 are spirally connected, and an annular pressure plate 33 is also provided on the outer side of the sleeve 32. The annular pressure plate 33 is used to press the bottom membrane 30 against the pool wall, and an air outlet tube 8 connected to the top of the air guide pipe 6 is also fixed on the movable pressure plate 2. The air outlet tube 8 is used to connect to an external gas storage device for receiving biogas. How to store biogas is a conventional technical means for those skilled in the art, and the gas storage device will not be introduced in detail here.

[0050] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A yellow pulp water treatment facility based on black film pool fermentation technology, characterized in that: It comprises a plurality of independent fermentation tanks, a bottom film is arranged in the fermentation tank close to the tank wall, and a pressing mechanism 1 for pressing the bottom film is arranged at the top of the fermentation tank; The first pressing mechanism includes a movable pressing plate and a lifting unit for driving the movable pressing plate to lift and lower, and the movable pressing plate is used to press the edge of the bottom film against the top of the fermentation tank; An annular groove is provided in the inner circle of the movable pressing plate, a film roll is provided in the annular groove, the film roll on the film roll forms an upper film after being unfolded and can seal the top of the fermentation tank, a fermentation space is formed between the upper film and the bottom film, and a second pressing mechanism for pressing the upper film against the top of the fermentation tank is movably provided on the movable pressing plate; The inner wall of the fermentation tank is provided with a plurality of air outlet holes, the bottom membrane is provided with notches corresponding to the air outlet holes, and the fermentation tank is also provided with an air guide mechanism connected to the air outlet holes to guide out the biogas formed in the fermentation space; The cross-section of the fermentation tank is square, and connecting holes are opened at the four corners of the top surface of the fermentation tank. An elastic buffer unit is arranged at the bottom of the connecting hole. The bottom surface of the movable pressure plate is provided with connecting columns corresponding to the connecting holes. Four installation cavities are distributed circumferentially on the inner pool wall of the fermentation tank, and the lifting unit is arranged in each installation cavity, and the installation cavity and the adjacent connecting holes are connected through connecting holes.

2. A yellow pulp water treatment facility based on black film pool fermentation technology as claimed in claim 1, characterized in that: The lifting unit includes a cross bar movably arranged in the installation cavity, a lifting drive rod fixed in the installation cavity and connected to the cross bar, the cross bar is hollow, and docking rods are movably sleeved on both ends of the cross bar, a docking drive member for driving the docking rod to extend and retract is arranged in the cross bar, and the docking rod can movably pass through the connecting hole, and a docking hole for plugging with the docking rod is opened on the side wall of the connecting column.

3. The yellow pulp water treatment facility based on black film pool fermentation technology according to claim 1, characterized in that: The elastic buffer unit includes a columnar spring and a pressure plate fixed on the top of the columnar spring. The outer diameter of the columnar spring is smaller than the hole diameter of the connecting hole. The top surface of the pressure plate is used to contact the bottom end of the connecting column.

4. A yellow pulp water treatment facility based on black film pool fermentation technology as claimed in claim 3, characterized in that: The bottom surface of the movable pressing plate is provided with an annular lower boss, the top surface of the fermentation tank is provided with a pressing groove, the edge of the bottom film is located in the pressing groove and is pressed by the lower boss.

5. The yellow pulp water treatment facility based on black film pool fermentation technology according to claim 1, characterized in that: The second clamping mechanism includes a movable frame and a plurality of clamping units circumferentially distributed on the movable pressing plate. The movable frame is arranged on the inner side of the movable pressing plate. The plurality of clamping units press the movable frame against the pool top from above to seal the edge of the unfolded upper mold.

6. A yellow pulp water treatment facility based on black film pool fermentation technology as claimed in claim 5, characterized in that: An annular upper boss is provided on the top of the movable pressure plate, and the clamping unit includes a bracket fixed on the upper boss and a rotating rod rotatably connected to the bracket. A back plate is provided on the side of the rotating rod close to the movable frame through a pin shaft, and the bottom surface of the back plate can contact the top surface of the movable frame. The clamping unit also includes a lifting assembly to lift the end of the rotating rod away from the movable frame upward.

7. A yellow pulp water treatment facility based on black film pool fermentation technology as claimed in claim 6, characterized in that: The lifting assembly includes a push rod, both ends of which are connected to swing arms, the other ends of which are rotatably connected to the top of the fermentation tank, and the bottom surface of the rotating rod is provided with a slot for clamping the push rod.

8. A yellow pulp water treatment facility based on black film pool fermentation technology as claimed in claim 1 or 5, characterized in that: The air guide mechanism includes an air guide tube, a built-in air tube arranged in the air outlet, and a sleeve arranged at the outer port of the air outlet. The top end of the air guide tube is connected to the movable pressure plate, the bottom end of the air guide tube passes through the cross bar and extends into the installation cavity, the side wall of the air guide tube is provided with a plug hole, one end of the built-in air tube is connected to the plug hole, the sleeve is detachably connected to the air outlet, and the inner end of the sleeve is in contact with the other end of the built-in air tube.

9. A yellow pulp water treatment facility based on black film pool fermentation technology as claimed in claim 8, characterized in that: The sleeve is a cylinder with a threaded outer wall. The sleeve and the air outlet are spirally connected. An annular pressure plate is also provided on the outside of the sleeve. The annular pressure plate is used to press the bottom membrane against the pool wall. An air outlet cylinder connected to the top of the air guide pipe is also fixed on the movable pressure plate. The air outlet cylinder is used to connect to an external gas storage device for receiving biogas.

Images