Microorganism expanding culture device and microorganism expanding culture method for nitrogen and phosphorus removal of water body

Abstract

The invention discloses a microorganism expanding culture device and a microorganism expanding culture method for nitrogen and phosphorus removal of a water body, and relates to the field of microorganism culture.The microorganism expanding culture device comprises a fermentation tank, a mixing tank is arranged on the outer side of the fermentation tank, an expanding culture pond is arranged on the outer side of the mixing tank, a plurality of partition plates are arranged in the expanding culture pond, and intercommunicating openings are formed in the partition plates; a desilting assembly, an aeration assembly and a switching assembly are arranged in the propagation pool, and the switching assembly can drive the desilting assembly and the aeration assembly to move to the positions between the different adjacent partition plates through the intercommunication openings. Sludge is cleaned in the desilting frame, the sludge is prevented from being dispersed in the desilting process, the desilting effect is improved, after desilting, the area is subjected to aeration, due to the fact that the sludge is cleaned, sludge dispersion cannot be caused, the precipitation effect cannot be affected, aeration not only further mixes strain distribution and improves the decomposition efficiency, but also increases the oxygen content of water, and the desilting effect is improved. The survival time of aerobic bacteria is prolonged, the reproduction of the aerobic bacteria is increased, and the water purification effect is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of microbial culture, in particular to a microbial propagation device and a microbial propagation method for denitrification and dephosphorization of water bodies. BACKGROUND

[0002] Denitrification and dephosphorization of water bodies are mainly achieved by the synergistic effect of biological, chemical and ecological engineering techniques, which requires the use of a large number of aerobic bacteria such as polyphosphate bacteria. Although polyphosphate bacteria are aerobic and anaerobic bacteria, they also need to alternate between aerobic and anaerobic conditions during the dephosphorization stage. However, during the cultivation stage, they need to be cultured in an aerobic environment to increase the propagation speed. A microbial propagation device is a device used for large-scale cultivation and propagation of specific microorganisms (such as bacteria, fungi, and algae). The core goal is to achieve high-density and high-efficiency growth of microorganisms in a controlled environment. Common propagation devices include fermentation tanks, pilot-scale and industrial-scale fermentation systems, etc. In industry, a large number of bacterial populations are required. After the bacteria are cultured in a suitable environment in the fermentation tank, they are introduced into a propagation tank for propagation to increase the number of bacterial populations.

[0003] Chinese Patent Application CN119220388A discloses a microbial propagation device and a propagation method thereof, which includes a cabinet body, an expansion reaction mechanism, a supply mechanism and a control mechanism are arranged in the cabinet body; the expansion reaction mechanism includes an expansion reaction cylinder, a cylinder cover plate, an electric device and a stirring assembly; the expansion reaction cylinder is fixedly connected with the cabinet body; the cylinder cover plate is connected with the electric device; the power output end of the electric device is connected with the stirring assembly through the cylinder cover plate; the stirring assembly is arranged in the expansion reaction cylinder; the supply mechanism is connected with the cylinder cover plate, and the supply mechanism includes a hot water supply assembly connected with the cylinder cover plate, which can achieve efficient propagation of bacteria at a suitable temperature in winter, improve the intelligent degree of the propagation process, realize the integration of the device for precise monitoring and post-cleaning of the expansion process, and achieve efficient propagation of microorganisms as a whole.

[0004] Chinese Patent Application CN113652336A discloses a movable environmental microorganism screening and propagation culture device, which includes a machine body provided with universal wheels at the bottom for movement; a storage rack body fixedly installed in the interior of the machine body; an empty groove and a propagation culture chamber both arranged in the interior of the machine body; a waste liquid collection chamber installed on the outer side of the middle part of the machine body; and further including a rotating rod with a bearing installed at the upper end of the interior of the machine body; a anti-blocking assembly installed at the outer side of the storage rack body at equal angles with respect to the center of the storage rack body; a second rotating disc fixedly installed at the middle part of the rotating rod; and a discharging opening respectively arranged in the interior of the second rotating disc and the machine body, which can realize the cooperation between the screening and propagation, improve the culture efficiency of microorganisms, and promote the uniform distribution of microorganisms in the propagation culture chamber to improve the propagation culture effect.

[0005] The above patent and prior art also has the following defects:

[0006] In the existing microbial culture, the culture solution contains a large amount of organic matter, and in the process of bacterial propagation, sludge is accumulated at the bottom of the tank, and the water body is aerated, which can cause the sludge at the bottom of the tank to be stirred and mixed with the water body again, resulting in increased difficulty in sludge treatment, inability to aerate the water body, and reduced oxygen content in the water body, poor reproduction ability of aerobic bacteria in the water body, and short survival time of the aerobic bacteria, resulting in poor microbial propagation effect.

[0007] Therefore, the present application provides a microbial propagation device and a microbial propagation method for water body denitrification and phosphorus removal to meet the needs. SUMMARY

[0008] The purpose of the present application is to provide a microbial propagation device and a microbial propagation method for water body denitrification and phosphorus removal, which can improve the effect of sludge removal by closing the sludge removal frame with the fixed and movable closure plates, preventing the dispersion of sludge during the sludge removal process, and improving the sludge removal effect. After sludge removal, the area is aerated, and since the sludge has been cleaned, it will not cause the sludge to disperse and will not affect the sedimentation effect. The aeration not only further mixes the distribution of bacterial strains and improves the decomposition efficiency, but also increases the oxygen content of the water body, improves the survival time of aerobic bacteria, increases the reproduction of aerobic bacteria, and has a good effect on water purification.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a microbial propagation device, comprising a fermentation tank, a mixing tank is arranged outside the fermentation tank, an expansion tank is arranged outside the mixing tank, a plurality of partitions are arranged in the expansion tank, and intercommunication openings are formed in the plurality of partitions;

[0010] A sludge removal assembly, an aeration assembly, and a switching assembly are arranged in the expansion tank, and the switching assembly can drive the sludge removal assembly and the aeration assembly to move between different adjacent partitions through the intercommunication openings;

[0011] The sludge removal assembly comprises a connecting plate, a sludge removal frame, a moving plate, two compensation plates, and a compensation spring, the two compensation plates are slidingly fitted on the moving plate, the compensation spring is arranged between the two compensation plates, the moving plate can move vertically on the connecting plate, and the connecting plate can move in the sludge removal frame;

[0012] The aeration assembly comprises a fixed closure plate, a movable closure plate, and two aeration pipes, the two aeration pipes are arranged on the corresponding compensation plates, the fixed closure plate is provided with a fixed aeration hole, the movable closure plate is provided with a movable aeration hole, the fixed closure plate is fixedly installed on the top of the sludge removal frame, the movable closure plate is slidingly fitted on the bottom of the fixed closure plate, and the movable closure plate can be moved to connect the fixed aeration hole and the movable aeration hole.

[0013] Preferably, the dredging assembly further comprises a sliding guide, a lifting block, a lifting motor, a lifting screw, a moving motor, two moving screws and a moving belt piece, the sliding guide is fixedly installed on the moving plate, the two blast pipes are slidingly matched on the sliding guide, the lifting motor is fixedly installed on the connecting plate, the lifting screw is fixedly installed on the output end of the lifting motor, the lifting block is sleeved on the lifting screw and is in threaded connection with the lifting screw, the lifting block is fixedly installed on the moving plate, the moving motor is fixedly installed on the dredging frame, one end of the moving screw is rotatably connected to the dredging frame, one end of the moving screw is fixedly installed on the output end of the moving motor, the moving screw can drive the other moving screw to rotate through the moving belt piece when the moving screw rotates, and the connecting plate is sleeved on the two moving screws and is in threaded connection with the moving screws.

[0014] Preferably, the blast assembly further comprises a guide rod, two moving hoses and a spiral hose, the guide rod is fixedly installed on the dredging frame, the connecting plate is sleeved on the guide rod and is in sliding connection with the guide rod, the spiral hose is spirally wound on the guide rod, one end of each of the two moving hoses is fixedly connected to the corresponding blast pipe and is in communication with the blast pipe, the other end of each of the two moving hoses is fixedly connected to the spiral hose and is in communication with the spiral hose, and the other end of the spiral hose is connected with an air pump.

[0015] Preferably, the switching assembly comprises a rotating cylinder, a switching gear ring, a switching gear and a switching motor, the switching motor is fixedly installed on the top of the mixing tank, the switching gear is fixedly installed on the output end of the switching motor, the rotating cylinder is rotatably connected to the mixing tank, the switching gear ring is fixedly installed on the rotating cylinder, the switching gear is in engagement with the switching gear ring, and the dredging frame is fixedly installed on the rotating cylinder.

[0016] Preferably, a rotating shaft is rotatably connected in the fermentation tank, a plurality of mixing rods are fixedly installed on the rotating shaft, a mixing motor is fixedly installed on the top of the fermentation tank, the rotating shaft is fixedly installed on the output end of the mixing motor, a heating device is further arranged in the fermentation tank, a discharge pipe is fixedly and communicatively connected to the fermentation tank close to the bottom position, a discharge pump is connected to the discharge pipe, and a feeding pipe is installed on the top of the discharge pipe.

[0017] Preferably, the blast assembly comprises a pushing cylinder and a pushing block, the pushing cylinder is fixedly installed on the dredging frame, and the pushing block is fixedly installed on the moving closed plate.

[0018] Preferably, two connecting blocks are fixedly installed on the moving plate, a fixed rod is fixedly installed between the two connecting blocks, a fixed block is fixedly installed on each of the two compensation plates, the fixed block is sleeved on the fixed rod and is in sliding fit with the fixed rod, and two ends of the compensation spring are fixedly installed on the corresponding fixed blocks.

[0019] Preferably, a plurality of dredging frames are fixedly installed in the extension culture tank, dredging pipes are communicated in the dredging frames, sludge pumps are communicated with the dredging pipes, support wheels are rotatably connected to the dredging frames, support rings are fixedly installed in the extension culture tank, and the support wheels abut against the support rings.

[0020] Preferably, the top of the mixing tank is open, a plurality of overflow frames are fixedly installed on the top of the mixing tank, a water inlet pipe is arranged in the mixing tank, and the bottom of the water inlet pipe is located above the bottom of the mixing tank.

[0021] The microbial extension culture method for denitrification and dephosphorization of water bodies uses the microbial extension culture device, and comprises the following steps.

[0022] The nitrifying bacteria and the phosphorus accumulating bacteria are placed in the fermentation tank, and the nitrifying bacteria and the phosphorus accumulating bacteria multiply in a suitable environment, and the nitrifying bacteria, the phosphorus accumulating bacteria and the culture solution in the fermentation tank are discharged into the mixing tank for mixing.

[0023] The mixed water body is introduced into the extension culture tank, and the nitrifying bacteria, the phosphorus accumulating bacteria and the sedimentation effect cause the sludge to be deposited at the bottom of the tank.

[0024] The switching assembly drives the dredging assembly and the air bursting assembly to move to between adjacent baffle plates, the dredging frame abuts against the baffle plate, the adjacent two baffle plates are closed, the moving plate descends on the connecting plate, the moving plate and the compensation plate contact the bottom of the extension culture tank, the moving plate moves in the dredging frame, the sludge between the adjacent two baffle plates is pushed to one end and discharged, and the compensation plate abuts against the baffle plates on both sides through the extrusion of the compensation spring.

[0025] During the dredging process, the fixed air bursting holes and the movable air bursting holes on the fixed closing plate and the movable closing plate are staggered, and the top of the dredging frame is closed.

[0026] After the dredging is completed, the movable closing plate moves, the movable air bursting holes coincide with the fixed air bursting holes, the connecting plate moves reversely, and the moving plate, the compensation plate and the air bursting pipe are driven to move, the air bursting pipe sprays bubbles during the movement, and the bubbles are discharged from the movable air bursting holes and the fixed air bursting holes.

[0027] Then, the moving plate moves upward on the connecting plate, the switching assembly drives the dredging assembly and the air bursting assembly to move to between the next adjacent baffle plates for dredging and air bursting.

[0028] In summary, the technical effects and advantages of the present application are:

[0029] 1、In the present application, when dredging, the fixed closure plate and the movable closure plate close the dredging frame, so that the sludge is cleaned in the dredging frame, preventing the sludge from being dispersed during the dredging process, improving the dredging effect, and after dredging, the area is aerated, since the sludge is cleaned, it will not cause the sludge to be dispersed, and will not affect the sedimentation effect, the aeration not only further mixes the distribution of bacteria, improves the decomposition efficiency, but also increases the oxygen content of the water body, prolongs the survival time of aerobic bacteria, increases the reproduction of aerobic bacteria, and has good water purification effect;

[0030] 2、In the present application, by setting multiple partitions, the expanded culture tank is divided into multiple areas, and the dredging and aeration operations are carried out in multiple areas by the dredging assembly and the aeration assembly, when the dredging assembly and the aeration assembly move to between the two corresponding partitions, the two partitions are closed, preventing the dredging and aeration from disturbing the water bodies of other areas, and preventing the sludge and impurities of other areas from being stirred and mixed again. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0032] Figure 1 It is one of the schematic diagrams of the three-dimensional structure of the present application;

[0033] Figure 2 It is the second schematic diagram of the front view structure of the present application;

[0034] Figure 3 It is an enlarged view of part A in the present application; Figure 2

[0035] Figure 4 It is a schematic diagram of the structure of the fermentation tank, the expanded culture tank, the dredging assembly and the aeration assembly in the present application;

[0036] Figure 5 It is a schematic diagram of the structure of the fermentation tank, the expanded culture tank and the partition in the present application;

[0037] Figure 6 It is an enlarged view of part B in the present application; Figure 5

[0038] Figure 7 It is a schematic diagram of the structure of the expanded culture tank and the supporting wheel in the present application;

[0039] Figure 8 It is part C in the present application; Figure 7 ​​Enlarged view of part C;

[0040] Figure 9 Schematic diagram of the structure of the hybrid motor and the hybrid rod in the present invention;

[0041] Figure 10 Schematic diagram of the structure of the moving plate and the compensation plate in the present invention;

[0042] Figure 11 For the present invention Figure 10 Magnified view of part D.

[0043] In the figure: 1. Fermentation tank; 2. Mixing tank; 3. Expansion culture tank; 4. Dredging assembly; 41. Connecting plate; 42. Dredging frame; 43. Moving plate; 44. Compensation plate; 45. Compensation spring; 46. Lifting motor; 47. Lifting screw; 48. Moving motor; 49. Moving screw; 5. Aeration assembly; 51. Fixed closing plate; 52. Moving closing plate; 53. Aeration pipe; 54. Guide rod; 55. Moving hose; 56. Spiral hose; 57. Push cylinder; 58. Push block; 6. Switching assembly; 61. Rotating cylinder; 62. Switching gear ring; 63. Switching gear; 64. Switching motor; 7. Mixing motor; 8. Discharge pipe; 9. Mixing rod; 10. Fixed rod; 11. Dredging frame; 12. Support wheel; 13. Overflow frame; 14. Water inlet pipe; 15. Partition. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] Example 1: Reference Figures 1-11 The microbial expansion device shown includes a fermentation tank 1, a mixing tank 2 is provided outside the fermentation tank 1, and an expansion tank 3 is provided outside the mixing tank 2. A plurality of partitions 15 are provided in the expansion tank 3, and a plurality of partitions 15 are provided with interconnecting openings.

[0046] The expansion tank 3 is provided with a dredging assembly 4, an aeration assembly 5 and a switching assembly 6. The switching assembly 6 can drive the dredging assembly 4 and the aeration assembly 5 to move between different adjacent partitions 15 through the interconnecting opening.

[0047] The dredging assembly 4 comprises a connecting plate 41, a dredging frame 42, a moving plate 43, two compensation plates 44 and a compensation spring 45, the two compensation plates 44 are slidingly fitted on the moving plate 43, the compensation spring 45 is arranged between the two compensation plates 44, the moving plate 43 can move vertically on the connecting plate 41, and the connecting plate 41 can move in the dredging frame 42;

[0048] The air bursting assembly 5 comprises a fixed closing plate 51, a moving closing plate 52 and two air bursting pipes 53, the two air bursting pipes 53 are arranged on the corresponding compensation plates 44 respectively, the fixed closing plate 51 is provided with fixed air bursting holes, the moving closing plate 52 is provided with moving air bursting holes, the fixed closing plate 51 is fixedly installed on the top of the dredging frame 42, the moving closing plate 52 is slidingly fitted on the bottom of the fixed closing plate 51, and the moving closing plate 52 can move to make the fixed air bursting holes and the moving air bursting holes communicate.

[0049] The aerobic bacteria and culture substance are placed in the fermentation tank 1, the aerobic bacteria multiply in a suitable environment, the aerobic bacteria and the culture liquid in the fermentation tank 1 are discharged into the mixing tank 2 for mixing, the mixed water body is introduced into the expansion pool 3, under the action of the aerobic bacteria and the sedimentation, the sludge is deposited at the bottom of the pool, the switching assembly 6 drives the dredging assembly 4 and the air bursting assembly 5 to move to between the adjacent partition plates 15, the dredging frame 42 abuts against the partition plates 15, the adjacent two partition plates 15 are closed, the moving plate 43 descends on the connecting plate 41, the moving plate 43 and the compensation plate 44 contact the bottom of the expansion pool 3, the moving plate 43 moves in the dredging frame 42, the sludge between the adjacent two partition plates 15 is pushed to one end and discharged, the compensation plate 44 abuts against the partition plates 15 on both sides through the extrusion of the compensation spring 45, in the dredging process, the fixed air bursting holes and the moving air bursting holes on the fixed closing plate 51 and the moving closing plate 52 are staggered, the top of the dredging frame 42 is closed, after the dredging is completed, the moving closing plate 52 moves to make the moving air bursting holes coincide with the fixed air bursting holes, the connecting plate 41 moves reversely to drive the moving plate 43, the compensation plate 44 and the air bursting pipe 53 to move, the air bursting pipe 53 sprays bubbles in the moving process, the bubbles are discharged from the moving air bursting holes and the fixed air bursting holes, then the moving plate 43 moves upward on the connecting plate 41, the switching assembly 6 drives the dredging assembly 4 and the air bursting assembly 5 to move to between the next adjacent partition plates 15 for dredging and air bursting.

[0050] The dredging assembly 4 and the air blowing assembly 5 are moved to between the two corresponding baffle plates 15, the two baffle plates 15 are closed, the dredging and air blowing disturb the water bodies of other areas are prevented, the water body sludge and impurities of other areas are prevented from being re-stirred and mixed, the fixed closing plate 51 and the movable closing plate 52 close the dredging frame 42 when dredging, the sludge is cleaned in the dredging frame 42, the sludge is prevented from being dispersed during the dredging process, and the dredging effect is improved, air blowing is performed on the area after dredging, the sludge is cleaned and the sludge is prevented from being dispersed, the sedimentation effect is not affected, the air blowing not only further mixes the distribution of bacteria and improves the decomposition efficiency, but also increases the oxygen content of the water body, prolongs the survival time of the aerobic bacteria, increases the reproduction of the aerobic bacteria, and has a good water purification effect.

[0051] Further, a plurality of sludge discharge frames 11 are fixedly installed in the extension culture tank 3, the sludge discharge frames 11 are communicated with sludge discharge pipes, and the sludge discharge pipes are communicated with sludge pumps.

[0052] Embodiment 2, refer to Figures 1-11 The dredging assembly 4 further comprises a sliding guide, a lifting block, a lifting motor 46, a lifting screw 47, a moving motor 48, two moving screws 49, and a moving belt piece, the sliding guide is fixedly installed on the moving plate 43, the two air blowing pipes 53 are slidingly fitted on the sliding guide, the lifting motor 46 is fixedly installed on the connecting plate 41, the lifting screw 47 is fixedly installed on the output end of the lifting motor 46, the lifting block is sleeved on the lifting screw 47 and is threadedly connected with the lifting screw 47, the lifting block is fixedly installed on the moving plate 43, the moving motor 48 is fixedly installed on the dredging frame 42, one end of the moving screw 49 is rotatably connected to the dredging frame 42, one end of one of the moving screws 49 is fixedly installed on the output end of the moving motor 48, when the moving screw 49 rotates, the other moving screw 49 can be driven to rotate through the moving belt piece, and the connecting plate 41 is sleeved on the two moving screws 49 and is threadedly connected with the moving screws 49.

[0053] The lifting motor 46 drives the lifting screw 47 to rotate, the lifting block moves on the lifting screw 47, the lifting block drives the moving plate 43 to move on the connecting plate 41, the moving plate 43 moves downward to abut against the bottom of the extension culture tank 3, the sludge is more thoroughly cleaned, and the moving plate 43 moves upward to overlap with the connecting plate 41, so that the moving plate 43 can enter between the next adjacent baffle plates 15 through the intercommunication port, the moving motor 48 drives one of the moving screws 49 to rotate, the moving screw 49 drives the other moving screw 49 to rotate through the moving belt piece, the connecting plate 41 moves on the moving screws 49, and the connecting plate 41 drives the moving plate 43 and the compensation plate 44 to move, so that the sludge between the adjacent baffle plates 15 is scraped away.

[0054] Further, two explosion pipes 53 are fixedly installed on the corresponding compensation plates 44.

[0055] Further, the moving belt part comprises two moving belt pulleys and a moving belt, the two moving belt pulleys are fixedly installed on the corresponding moving screws 49 respectively, the moving belt is connected between the two moving belt pulleys, when one of the moving screws 49 rotates, the corresponding moving belt pulley rotates, the moving belt pulley drives the other moving belt pulley to rotate through the moving belt, and the other moving belt pulley drives the other moving screw 49 to rotate.

[0056] Further, two connecting blocks are fixedly installed on the moving plate 43, a fixed rod 10 is fixedly installed between the two connecting blocks, a fixed block is fixedly installed on each of the two compensation plates 44, the fixed block is sleeved on the fixed rod 10 and slidably connected with the fixed rod 10, and the two ends of the compensation spring 45 are fixedly installed on the corresponding fixed blocks, and the compensation spring 45 is sleeved on the fixed rod 10.

[0057] Embodiment 3, refer to Figures 1-11 Further, the explosion assembly 5 further comprises a guide rod 54, two moving hoses 55 and a spiral hose 56, the guide rod 54 is fixedly installed on the dredging frame 42, the connecting plate 41 is sleeved on the guide rod 54 and slidably connected with the guide rod 54, the spiral hose 56 is spirally wound on the guide rod 54, one end of each of the two moving hoses 55 is fixedly connected with the corresponding explosion pipe 53 and in communication, the other end of each of the two moving hoses 55 is fixedly connected with the spiral hose 56 and in communication, and the other end of the spiral hose 56 is connected with a gas pump.

[0058] The gas pump introduces the compressed air into the spiral hose 56, and then introduces the compressed air into the water through the moving hoses 55 and the explosion pipes 53.

[0059] Further, as another preferred embodiment, the output end of the gas pump is connected with a gas tank, the output end of the gas tank is provided with an electromagnetic valve and in communication with the spiral hose 56, and the electromagnetic valve is periodically opened, so that the high-speed bubbles are more easily formed.

[0060] The explosion assembly 5 comprises a push cylinder 57 and a push block 58, the push cylinder 57 is fixedly installed on the dredging frame 42, and the push block 58 is fixedly installed on the moving sealing plate 52.

[0061] The push cylinder 57 drives the push block 58 to move, and the push block 58 drives the moving sealing plate 52 to move.

[0062] Embodiment 4, refer to Figures 1-11As shown, unlike the above-mentioned embodiments, the switching assembly 6 comprises a rotating cylinder 61, a switching gear ring 62, a switching gear 63 and a switching motor 64, the switching motor 64 is fixedly installed on the top of the mixing tank 2, the switching gear 63 is fixedly installed on the output end of the switching motor 64, the rotating cylinder 61 is rotatably connected to the mixing tank 2, the switching gear ring 62 is fixedly installed on the rotating cylinder 61, the switching gear 63 is engaged with the switching gear ring 62, and the dredging frame 42 is fixedly installed on the rotating cylinder 61.

[0063] The switching motor 64 drives the switching gear 63 to rotate, the switching gear 63 drives the switching gear ring 62 to rotate, the switching gear ring 62 drives the rotating cylinder 61 to rotate, and the rotating cylinder 61 drives the dredging frame 42 to rotate, so that the dredging frame 42 is rotated to different adjacent partitions 15 for dredging.

[0064] Embodiment 5, refer to Figures 1-11 As shown, unlike the above-mentioned embodiments, the rotating shaft is rotatably connected in the fermentation tank 1, a plurality of mixing rods 9 are fixedly installed on the rotating shaft, the mixing motor 7 is fixedly installed on the top of the fermentation tank 1, and the rotating shaft is fixedly installed on the output end of the mixing motor 7. The fermentation tank 1 is also provided with a heating device, and the discharge pipe 8 is fixedly communicated with the position close to the bottom of the fermentation tank 1. The discharge pipe 8 is connected with a discharge pump, and the top of the discharge pipe 8 is provided with an inlet pipe.

[0065] The mixing motor 7 drives the rotating shaft to rotate, the rotating shaft drives the mixing rod 9 to rotate, the mixing rod 9 mixes the materials in the fermentation tank 1, so that the bacteria are more uniform and the mixing effect is better, and the discharge pipe 8 discharges the bacteria in the fermentation tank 1 into the mixing tank 2.

[0066] Further, the top of the mixing tank 2 is provided with an opening, and a plurality of overflow frames 13 are fixedly installed on the top of the mixing tank 2. The mixing tank 2 is provided with a water inlet pipe 14, and the bottom of the water inlet pipe 14 is located above the bottom of the mixing tank 2.

[0067] The culture solution enters the mixing tank 2 through the water inlet pipe 14 and is mixed with the bacteria during the upward movement.

[0068] Further, the support wheel 12 is rotatably connected to the dredging frame 42, and the support wheel 12 is rotatably connected to the support wheel 12. The support wheel 12 is rotatably connected to the support wheel 12.

[0069] Further, the bottom of the mixing tank 2 is fixedly provided with a spiral air explosion pipe, and the spiral air explosion pipe is connected with an air explosion pump, so as to increase the mixing effect of the mixing tank 2.

[0070] The microbial expansion method for water body denitrification and phosphorus removal uses the above-mentioned microbial expansion device, which comprises the following steps:

[0071] The nitrifying bacteria and the phosphorus bacteria and the culture substance are placed into the fermentation tank 1, the nitrifying bacteria and the phosphorus bacteria multiply in the suitable environment, and the nitrifying bacteria, the phosphorus bacteria and the culture liquid in the fermentation tank 1 are discharged into the mixing tank 2 for mixing;

[0072] The mixed water body is introduced into the extension culture pool 3, and the sludge is precipitated at the bottom of the pool under the nitrifying bacteria, the phosphorus bacteria and the precipitation effect;

[0073] The switching assembly 6 drives the dredging assembly 4 and the air bursting assembly 5 to move between the adjacent partition plates 15, the dredging frame 42 abuts against the partition plates 15, the adjacent two partition plates 15 are closed, the moving plate 43 descends on the connecting plate 41, the moving plate 43 and the compensation plate 44 contact the bottom of the extension culture pool 3, the moving plate 43 moves in the dredging frame 42, the sludge between the adjacent two partition plates 15 is pushed to one end and discharged, and the compensation plate 44 abuts against the two partition plates 15 through the extrusion of the compensation spring 45;

[0074] During the dredging process, the fixed air bursting holes and the moving air bursting holes on the fixed closing plate 51 and the moving closing plate 52 are staggered, and the top of the dredging frame 42 is closed;

[0075] After the dredging is completed, the moving closing plate 52 moves, the moving air bursting holes coincide with the fixed air bursting holes and are communicated, the connecting plate 41 moves reversely, drives the moving plate 43, the compensation plate 44 and the air bursting pipe 53 to move, the air bursting pipe 53 sprays bubbles during the moving process, and the bubbles are discharged from the moving air bursting holes and the fixed air bursting holes;

[0076] Then, the moving plate 43 moves upwards on the connecting plate 41, the switching assembly 6 drives the dredging assembly 4 and the air bursting assembly 5 to move between the next adjacent partition plates 15 for dredging and air bursting.

[0077] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and is not used to limit the present application, although the present application is described in detail with reference to the foregoing embodiments, the skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for some technical features, any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A microbial culture device, comprising a fermentation tank, characterized in that: A mixing tank is provided outside the fermentation tank, an expansion culture pool is provided outside the mixing tank, a plurality of partitions are provided in the expansion culture pool, and a plurality of partitions are provided with interconnecting openings; A rotating shaft is rotatably connected inside the fermentation tank, and several mixing rods are fixedly installed on the rotating shaft. A mixing motor is fixedly installed on the top of the fermentation tank, and the rotating shaft is fixedly installed on the output end of the mixing motor. A heating device is also provided in the fermentation tank. A discharge pipe is fixedly connected to the bottom of the fermentation tank, and the discharge pipe is connected to a discharge pump. A feed pipe is installed on the top of the discharge pipe.

2. The microorganism expansion and cultivation device according to claim 1, characterized in that: The expansion tank is provided with a dredging component, an aeration component and a switching component, and the switching component can drive the dredging component and the aeration component to move between different adjacent partitions through the intercommunication port; The dredging assembly includes a connecting plate, a dredging frame, a movable plate, two compensation plates, and a compensation spring. The two compensation plates are slidably fitted on the movable plate. The compensation spring is arranged between the two compensation plates. The movable plate can move vertically on the connecting plate. The connecting plate can move within the dredging frame. The blasting assembly includes a fixed closing plate, a movable closing plate and two blasting pipes, the two blasting pipes are respectively arranged on corresponding compensation plates, the fixed closing plate is provided with a fixed blasting hole, and the movable closing plates are both provided with movable blasting holes. The fixed closing plate is fixedly installed on the top of the dredging frame, and the movable closing plate is slidably fitted on the bottom of the fixed closing plate. The movable closing plate can move to connect the fixed blasting hole and the movable blasting hole.

3. The microorganism expansion and cultivation device according to claim 2, characterized in that: The dredging assembly further includes a sliding guide rail, a lifting block, a lifting motor, a lifting screw, a mobile motor, two mobile screws and a mobile belt part. The sliding guide rail is fixedly mounted on the mobile plate, and the two air explosion pipes are slidably fitted on the sliding guide rail. The lifting motor is fixedly mounted on the connecting plate, and the lifting screw is fixedly mounted on the output end of the lifting motor. The lifting block is sleeved on the lifting screw and threadedly connected to the lifting screw. The lifting block is fixedly mounted on the mobile plate, and the mobile motor is fixedly mounted on the dredging frame. One end of the mobile screw is rotatably connected to the dredging frame, and one end of one of the mobile screws is fixedly mounted on the output end of the mobile motor. When the mobile screw rotates, it can drive the other mobile screw to rotate through the mobile belt part, and the connecting plate is sleeved on the two mobile screws and threadedly connected to the mobile screws.

4. The microorganism expansion and cultivation device according to claim 2, characterized in that: The air blasting assembly also includes a guide rod, two movable hoses and a spiral hose. The guide rod is fixedly mounted on the dredging frame, the connecting plate is sleeved on the guide rod and slidably cooperates with the guide rod, the spiral hose is spirally wound on the guide rod, one end of the two movable hoses is fixed and connected to the corresponding air blasting pipe, the other end of the two movable hoses is fixed and connected to the spiral hose, and the other end of the spiral hose is connected to an air pump.

5. The microorganism expansion and cultivation device according to claim 2, characterized in that: The switching assembly includes a rotating cylinder, a switching ring gear, a switching gear and a switching motor. The switching motor is fixedly mounted on the top of the mixing tank, the switching gear is fixedly mounted on the output end of the switching motor, the rotating cylinder is rotatably connected to the mixing tank, the switching ring gear is fixedly mounted on the rotating cylinder, the switching gear is meshed with the switching ring gear, and the dredging frame is fixedly mounted on the rotating cylinder.

6. The microorganism expansion and cultivation device according to claim 4, characterized in that: The explosion assembly includes a pushing cylinder and a pushing block, wherein the pushing cylinder is fixedly mounted on the dredging frame, and the pushing block is fixedly mounted on the movable closing plate.

7. The microorganism expansion and cultivation device according to claim 2, characterized in that: Two connecting blocks are fixedly installed on the movable plate, a fixing rod is fixedly installed between the two connecting blocks, and fixed blocks are fixedly installed on both compensation plates. The fixed blocks are sleeved on the fixing rod and slidably cooperate with the fixing rod. Both ends of the compensation spring are fixedly installed on the corresponding fixed blocks, and the compensation spring is sleeved on the fixing rod.

8. The microorganism expansion and cultivation device according to claim 2, characterized in that: A plurality of silt removal frames are fixedly installed in the expansion culture pool, the silt removal frames are connected with silt removal pipes, the silt removal pipes are connected with sludge pumps, the silt removal frames are rotatably connected with support wheels, a support ring is fixedly installed in the expansion culture pool, and the support wheels are against the support rings.

9. The microorganism expansion and cultivation device according to claim 2, characterized in that: The top of the mixing tank is open, and a plurality of overflow frames are fixedly installed on the top of the mixing tank. A water inlet pipe is provided in the mixing tank, and the bottom of the water inlet pipe is located above the bottom of the mixing tank.

10. A microbial cultivation method for denitrification and phosphorus removal from water, using the microbial cultivation device according to any one of claims 2 to 9, characterized in that: The following steps are involved: The nitrifying bacteria, phosphate-accumulating bacteria and culture medium are placed in a fermentation tank, and the nitrifying bacteria and phosphate-accumulating bacteria multiply in a suitable environment. The nitrifying bacteria, phosphate-accumulating bacteria and culture medium in the fermentation tank are discharged into a mixing tank for mixing; The mixed water is passed into the expansion tank, where sludge is deposited at the bottom of the tank under the action of nitrifying bacteria, phosphate-accumulating bacteria and sedimentation. The switching assembly drives the dredging assembly and the explosion assembly to move between the adjacent partitions. The dredging frame and the partition are pressed against each other to close the space between the two adjacent partitions. The movable plate descends on the connecting plate. The movable plate and the compensation plate contact the bottom of the expansion tank. The movable plate moves in the dredging frame, pushing the sludge between the two adjacent partitions to one end and discharging it. The compensation plate is pressed against the partitions on both sides by the compensating spring. During the dredging process, the fixed blasting holes and the movable blasting holes on the fixed closing plate and the movable closing plate are staggered to close the top of the dredging frame; After the dredging is completed, the movable closing plate moves to make the movable blasting hole coincide with the fixed blasting hole and connect with it. The connecting plate moves in the opposite direction, driving the movable plate, the compensation plate and the blasting pipe to move. During the movement of the blasting pipe, bubbles are ejected and discharged from the movable blasting hole and the fixed blasting hole. Afterwards, the movable plate moves upward on the connecting plate, and the switching component drives the dredging component and the gas explosion component to move to between the next adjacent partitions for dredging and gas explosion.

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