A new type of biological membrane system applied to the modification of conventional biochemical system

Abstract

This invention discloses a novel biofilm system for the modification of conventional biochemical systems, relating to the field of wastewater treatment technology. It includes a first support frame and a second support frame, and sponge-plate packing material installed between the first and second supports. The thickness of the sponge-plate packing material is 30mm-50mm, and several sponge-plate packing materials are arranged horizontally with a spacing of 30mm-100mm between them. The sponge-plate packing material can be stacked 1-5 layers vertically to form vertical channels. This invention utilizes a modular design to achieve efficient modification without shutdown, improving the efficiency of wastewater treatment plant upgrades and expansions. Furthermore, by optimizing the packing material thickness, spacing, and air-to-water ratio, the system achieves high oxygen utilization and stable nitrification load, effectively removing ammonia nitrogen and COD from wastewater. It solves the problems of complex modification, high cost, and poor performance in existing technologies, and has high practical application value.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically a novel biofilm system applied to the modification of conventional biochemical systems. Background Technology

[0002] The activated sludge process is a widely used biological wastewater treatment method that achieves biological nitrogen and phosphorus removal through the setup of anaerobic, anoxic, and aerobic zones. The A2O process is simple, with sludge alternating between anaerobic, anoxic, and aerobic environments, resulting in good sludge settling performance. It simultaneously achieves nitrogen and phosphorus removal and organic matter degradation, and is currently widely used in urban wastewater treatment plants. However, with the continuous improvement of water quality discharge standards and the increase in influent water concentration, the design of many existing wastewater treatment plants can no longer meet current water quality and quantity requirements, making the upgrading and renovation of wastewater treatment plants urgent. Various upgrading approaches exist, such as adding pretreatment at the front end, in-situ upgrading of the biological treatment stage, and adding advanced treatment at the back end.

[0003] The wastewater in-situ biochemical treatment system disclosed in CN215886713U provides a wastewater in-situ biochemical treatment system. This system includes a sedimentation tank, a ring-shaped inlet channel, a first biochemical tank, and a second biochemical tank arranged coaxially from the inside out. The bottom of the first biochemical tank has a primary wastewater inlet, and the bottom of the first biochemical tank also has an inlet for discharging secondary wastewater into the second biochemical tank. The top of the second biochemical tank has a connecting channel for discharging tertiary wastewater into the ring-shaped inlet channel. The sedimentation tank also has an overflow trough, which discharges tertiary wastewater to the outside through an outlet pipe. The second biochemical tank has two spaced partition walls, which, together with the outer wall of the first biochemical tank, form a sludge pumping station. This wastewater in-situ biochemical treatment system reduces the occupied area and overcomes land limitations to achieve in-situ biochemical system transformation.

[0004] However, in the implementation process of the above-mentioned patent, if modification is required, the entire system needs to be replaced, which incurs huge costs. Secondly, as time goes by, the biofilm will gradually age, and the sludge and aging biofilm attached to the surface will reduce the treatment efficiency of the biochemical system and even cause system blockage, affecting the overall operation. Therefore, a novel biofilm system for the modification of conventional biochemical systems is proposed. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention proposes a novel biofilm system for the modification of conventional biochemical systems.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A novel biofilm system for modifying conventional biochemical systems includes a first scaffold and a second scaffold, and also includes...

[0008] Sponge plate sheet packing is installed between support No. 1 and support No. 2. The thickness of the sponge plate sheet packing is 30mm-50mm. Several sponge plate sheet packings are provided, and the spacing between the several sponge plate sheet packings arranged in the horizontal direction is set between 30mm-100mm. The sponge plate sheet packing can be stacked 1-5 layers in the longitudinal direction to form a vertical channel.

[0009] It also includes an integrated aeration pipe and aerators installed on the integrated aeration pipe. Both the integrated aeration pipe and the aerators are located below the sponge plate packing. The integrated aeration pipe is used to transport air, and the aerators are evenly distributed on the integrated aeration pipe to aerate all the air transported by the integrated aeration pipe through a straight channel formed between several sponge plate packings, so as to maintain a certain amount of dissolved oxygen in the system.

[0010] As a further preferred embodiment of this technical solution: the main body of the sponge plate-shaped filler is a cuboid with a porous sponge-like cross-section.

[0011] As a further preferred embodiment of this technical solution, the air-to-water ratio inside the sponge plate sheet filler is between 4:1 and 8:1.

[0012] As a further preferred embodiment of this technical solution, it also includes a shaking mechanism, which is set on the first support and is used to push the first and second mounting seats to shake left and right to accelerate the shedding of the aged biofilm and sludge on the surface of the sponge plate packing.

[0013] The vibration mechanism includes a rotating shaft fixedly connected to the output end of the drive motor. The rotating shaft is connected to a rotating ring via a connecting shaft. Several first wheel seats arranged in a circular array are fixedly connected to the outer wall of the rotating ring. Each first wheel seat is rotatably connected to a first roller.

[0014] As a further preferred embodiment of this technical solution: a first mounting base and a second mounting base are provided between the first bracket and the second bracket, and a second wheel seat is fixedly connected to both the first mounting base and the second mounting base. A second roller is rotatably connected to the second wheel seat. The second roller is fitted with the first roller. A first spring is fixedly connected to both the first mounting base and the second mounting base. A connecting plate is fixedly connected to the end of the first spring away from the first mounting base or the second mounting base.

[0015] As a further preferred embodiment of this technical solution: a limiting mechanism is provided on the first mounting base. The limiting mechanism includes several fixed sleeves fixedly connected to the first mounting base at equal intervals. A drive shaft is slidably connected inside the fixed sleeves. A drive block is fixedly connected to one end of the drive shaft, and a wedge block is fixedly connected to the other end of the drive shaft. A stop block is fixedly connected to the drive shaft. A second spring is sleeved on the outside of the drive shaft and is positioned between the stop block and the fixed sleeves. Several second limiting blocks arranged in a circular array are slidably connected inside the fixed sleeves. A third spring is fixedly connected to the second limiting blocks. The end of the third spring away from the second limiting block is fixedly connected to the fixed sleeve, and the second limiting block is fitted against the wedge block.

[0016] As a further preferred embodiment of this technical solution: the first mounting base is slidably connected with several connecting blocks of the same number and distribution as the fixed sleeve columns. Each connecting block is provided with a threaded groove, which is threadedly connected to an external thread. The lower end of the threaded groove is connected to a limiting groove, which is engaged with the second limiting block.

[0017] As a further preferred embodiment of this technical solution: the sponge plate sheet filler is disposed between mounting base No. 1 and mounting base No. 2, the upper and lower ends of the sponge plate sheet filler are fixed by mounting frames, the mounting frames are provided with guide grooves, and the mounting base No. 2 is provided with mounting shafts, the mounting shafts slide inside the guide grooves, and the connecting block is provided with mounting hole No. 1, which is slidably disposed with the mounting shaft.

[0018] As a further preferred embodiment of this technical solution: both the first bracket and the second bracket are provided with a locking mechanism. The locking mechanism includes an electric push rod fixedly connected to the first bracket or the second bracket. The output end of the electric push rod is fixedly connected to a first limiting block. The first mounting base and the second mounting base are provided with limiting holes that cooperate with the first limiting block.

[0019] As a further preferred embodiment of this technical solution: the lower ends of both the first bracket and the second bracket are fixedly connected to a fixing seat, and the fixing seat is provided with a second mounting hole.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. In this invention, by utilizing modular design, efficient transformation can be achieved without production shutdown, which improves the efficiency of upgrading and expanding the sewage treatment plant. Furthermore, by optimizing the thickness, gap, and air-to-water ratio of the packing material, the system has high oxygen utilization and stable nitrification load, which can effectively remove ammonia nitrogen and COD from sewage. This solves the problems of complex transformation, high cost, and poor effect in the existing technology, and has high practical application value.

[0022] 2. In this invention, by concentrating the aeration integrated pipe, aerator and sponge plate filler on the support, and hoisting them into the tank, production can be stopped without interruption. Moreover, multi-layer sponge plate filler modules can be arranged as needed, reducing the cost of modifying the original tank.

[0023] 3. In this invention, the vibrating mechanism enables the sponge plate packing to vibrate back and forth in the horizontal direction, which enhances the flushing effect of the aerator on the aging biofilm and sludge on the surface of the packing, thereby promoting the renewal of the biofilm and improving the treatment efficiency of the biochemical system.

[0024] 4. In this invention, the limiting mechanism ensures that the fixed sleeve will not come loose or fall off from the threaded groove during the reciprocating shaking of the sponge plate packing in the horizontal direction, thus ensuring the stability of the sponge plate packing.

[0025] 5. In this invention, the fixing and shaking state of the sponge plate sheet filler is flexibly controlled by the locking mechanism. The sponge plate sheet filler is kept stable during the adsorption stage and is released to shake during the flushing stage. Attached Figure Description

[0026] Figure 1 The inlet and outlet water quality diagrams are for filler thicknesses of 30mm and 50mm respectively according to the present invention.

[0027] Figure 2 The inlet and outlet water quality diagrams are for packing gaps of 30mm and 50mm respectively, according to the present invention.

[0028] Figure 3 The following are water quality diagrams for influent and effluent water with air-to-water ratios of 5:1 and 4:1, respectively, according to the present invention.

[0029] Figure 4 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 5 This is a partial three-dimensional structural diagram of the present invention. Figure 1 ;

[0031] Figure 6 for Figure 2 Enlarged view of point A in the middle;

[0032] Figure 7 This is a partial three-dimensional structural diagram of the present invention. Figure 2 ;

[0033] Figure 8 This is a partial three-dimensional structural diagram of the present invention. Figure 3 ;

[0034] Figure 9 for Figure 5Enlarged view of point B in the middle;

[0035] Figure 10 This is a partial three-dimensional structural diagram of the present invention. Figure 4 ;

[0036] Figure 11 This is a partial structural cross-sectional view of the present invention;

[0037] Figure 12 This is a partial three-dimensional structural diagram of the present invention. Figure 5 ;

[0038] Figure 13 This is a side view of the present invention;

[0039] Figure 14 This is a partial structural diagram of the present invention.

[0040] Legend: 1. Bracket No. 1; 2. Bracket No. 2; 3. Vibration mechanism; 31. Drive motor; 32. Rotating shaft; 33. Connecting shaft; 34. Rotating ring; 35. Wheel seat No. 1; 36. Roller No. 1; 37. Limit sleeve; 38. Connecting plate; 39. Spring No. 1; 310. Hole / groove; 4. Mounting base No. 1; 5. Mounting base No. 2; 51. Mounting shaft; 6. Wheel seat No. 2; 61. Roller No. 2; 8. Locking mechanism; 83. Limit hole; 84. Electric push rod; 85. Limit block No. 1; 9. Sponge board sheet packing; 91. Mounting frame; 92. Guide groove; 10. Connecting block; 101. Threaded groove; 102. Limiting groove; 103. Mounting hole No. 1; 11. Limiting mechanism; 111. External thread; 112. Drive shaft; 113. Drive block; 114. Stop block; 115. Spring No. 2; 116. Wedge block; 117. Limiting block No. 2; 118. Spring No. 3; 119. Fixed sleeve; 12. Fixed seat; 121. Mounting hole No. 2; 13. Integrated aeration pipe; 14. Aerator. Detailed Implementation

[0041] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1

[0043] Please see Figures 1-3A novel biofilm system for the modification of conventional biochemical systems includes a first support 1 and a second support 2, and a sponge plate-shaped packing material 9 installed between the first support 1 and the second support 2. The thickness of the sponge plate-shaped packing material 9 is 30mm-50mm, preferably 30mm. Several sponge plate-shaped packing materials 9 are provided. The sponge plate-shaped packing material 9 serves as a biological carrier, while improving the oxygen utilization rate of the system to maintain a high nitrification load. The novel biofilm system efficiently removes ammonia nitrogen and COD from wastewater.

[0044] For example, in Case 1, the specific implementation method is as follows: Figure 1 As shown, the wastewater to be treated is domestic sewage. The main influent water quality parameters include ammonia nitrogen, COD, BOD, total phosphorus, and total nitrogen. The designed influent flow rate is 5000 m³ / d, and the designed influent water quality standards are: ammonia nitrogen ≤ 32 mg / L, COD ≤ 310 mg / L, BOD ≤ 160 mg / L, total phosphorus ≤ 4 mg / L, and total nitrogen ≤ 45 mg / L. The designed effluent water quality standards are: ammonia nitrogen ≤ 5 mg / L, COD ≤ 50 mg / L, BOD ≤ 10 mg / L, and total phosphorus ≤ 45 mg / L. The concentration of ammonia nitrogen in the influent is ≤0.5mg / L, and the total nitrogen concentration is ≤15mg / L. Currently, the average daily wastewater volume is 3500m³ / d, and the water load rate is 70%. However, the average daily influent ammonia nitrogen concentration is 43mg / L, and the ammonia nitrogen load rate can reach 134%. In response to the above situation, in-situ modification will be carried out in the original aerobic tank by adding 192 new biofilm modules (each module is 3.0*2.0*1.0m in size, the plate packing size is 2*1m, the thickness is 30mm, the plate spacing is 30mm, and the air-to-water ratio is 5:1).

[0045] Through the above modifications, wastewater is treated in the system. Monitoring of the influent and effluent during operation reveals that the system demonstrates highly efficient removal capabilities for COD and ammonia nitrogen in wastewater. Effluent ammonia nitrogen levels are consistently below 4.5 mg / L, averaging 3.15 mg / L, with an ammonia nitrogen removal rate exceeding 80%. Effluent COD levels are consistently below 45 mg / L, averaging 33.19 mg / L, with an ammonia nitrogen removal rate exceeding 85%. Furthermore, by changing the packing thickness (in this case, the sponge plate packing 9 was designed with a thickness of 30 mm), the removal effect of the module in Example 1 on COD and ammonia nitrogen in wastewater was examined during system operation through influent and effluent water quality testing. After the system stabilized, water quality data was recorded for 30 days, revealing that the thickness of the sponge plate packing 9... The 30mm thick sponge plate packing showed high efficiency in removing COD and ammonia nitrogen, with the effluent COD concentration remaining stable below 45mg / L (average 33.19mg / L) and the effluent ammonia nitrogen concentration remaining below 4.5mg / L (average 3.15mg / L). However, when the sponge plate packing 9 was 50mm thick, the removal effect of the module on COD and ammonia nitrogen in wastewater was compared with that of the first case module through influent and effluent water quality testing. After the system was running stably, water quality test data was recorded for 30 days. The results showed that the 50mm thick sponge plate packing showed lower removal efficiency for COD and ammonia nitrogen, with the effluent COD concentration remaining stable below 50mg / L (average 43.04mg / L) and the effluent ammonia nitrogen concentration remaining around 5mg / L, occasionally exceeding 5mg / L (average 4.35mg / L).

[0046] In summary, the pollutant removal effect is worse when the plate packing thickness is 50mm than when it is 30mm. This is because the greater the thickness of the plate packing, the more difficult it is for oxygen to enter the packing, resulting in lower biomass and reduced treatment efficiency.

[0047] In this embodiment, the spacing between several sponge plate sheet fillers 9 arranged horizontally is set between 30mm and 100mm, preferably 30mm. The sponge plate sheet fillers 9 can be stacked 1-5 layers in the longitudinal direction to form vertical channels.

[0048] For example, in Case 2, the specific implementation method is as follows: Figure 2As shown, this case study uses the same module as Case 1, but differs in that the design modifies the packing gap. In Case 1, the packing gap is 5 / 3 of that in Case 2. During system operation, the removal efficiency of the module in Case 1 for COD and ammonia nitrogen in wastewater was examined through influent and effluent water quality testing. After the system stabilized, 30 days of water quality testing data were recorded. The results showed that the 30mm gap between the sponge plate packing 9 demonstrated highly efficient removal of COD and ammonia nitrogen, with the effluent COD concentration consistently below 45mg / L, averaging 33mg / L. The ammonia nitrogen concentration in the effluent was 19 mg / L, and the concentration remained below 4.5 mg / L, with an average of 3.15 mg / L. When the gap between the sponge plate packing 9 was 50 mm, water quality testing of the influent and effluent revealed that after the system was running stably, water quality test data recorded for 30 days showed that the 50 mm gap between the packing showed lower removal of COD and ammonia nitrogen. The COD concentration in the effluent was stable below 50 mg / L, with an average of 45.99 mg / L, and the ammonia nitrogen concentration in the effluent was maintained at around 5 mg / L, occasionally exceeding 5 mg / L, with an average of 4.65 mg / L.

[0049] In summary, the pollutant removal effect is worse when the packing gap is 50mm than when the gap is 30mm. This is because the larger the packing gap, the smaller the number of packing materials, and the less biomass attached to the packing surface per unit cubic meter, which reduces the treatment effect.

[0050] In this embodiment, the aeration integrated pipe 13 and the aerators 14 disposed on the aeration integrated pipe 13 are both disposed below the sponge plate packing 9. The aeration integrated pipe 13 is used to transport air, and the aerators 14 are evenly distributed on the aeration integrated pipe 13 to aerate all the air transported by the aeration integrated pipe 13 through the straight-through channel formed between several sponge plate packing 9, so as to maintain a certain amount of dissolved oxygen in the system. The aerators 14 are evenly distributed and small-aperture pipe aeration. The gas is dispersed into the system through the straight-through channel between the sponge plate packing 9. By controlling the air-to-water ratio, the entire system is kept running efficiently.

[0051] In this embodiment, the main body of the sponge plate filler 9 is a cuboid with a porous sponge-like cross-section.

[0052] In this embodiment, the air-water ratio inside the sponge plate packing 9 is between 4:1 and 8:1. For lightly polluted water bodies, the air-water ratio is 4:1-6:1, preferably 5:1. For heavily polluted water bodies, the air-water ratio is 6:1-8:1.

[0053] For example, in Case 3, the specific implementation method is as follows: Figure 3As shown, the difference from Case 1 is that the design changes the air-to-water ratio. In Case 1, the air-to-water ratio is 5:1, while in Case 3, the air-to-water ratio is 4:1. During system operation, the removal effect of the module in Case 1 on COD and ammonia nitrogen in wastewater was examined by detecting the influent and effluent water quality. After the system was running stably, water quality test data was recorded for 30 days. It was found that the sponge plate packing 9 with a thickness of 30mm showed high efficiency in removing COD and ammonia nitrogen. The effluent COD concentration was stable below 45mg / L, with an average of 33.19mg / L, and the effluent ammonia nitrogen concentration was maintained below 4.5mg / L, with an average of 3.15mg / L.

[0054] In Comparative Example 3, the air-to-water ratio was 4:1. The removal effect of the module in Comparative Example 3 on COD and ammonia nitrogen in wastewater was investigated by influent and effluent water quality testing. After the system was running stably, water quality test data were recorded for 30 days. It was found that the air-to-water ratio of 4:1 showed low removal of COD and ammonia nitrogen. The effluent COD concentration was stable below 50 mg / L, with an average of 47.19 mg / L. The effluent ammonia nitrogen concentration was maintained at around 5 mg / L, occasionally exceeding 5 mg / L, with an average of 4.77 mg / L.

[0055] In summary, the air-to-water ratio of 4:1 is less effective at removing pollutants than that of 5:1. This is because nitrifying bacteria consume oxygen during the aerobic reaction, and the biological activity is lower at an air-to-water ratio of 4:1 than at 5:1, resulting in a lower treatment effect.

[0056] Example 2

[0057] In this embodiment, an integrated aeration pipe 13 is fixedly installed between support 1 and support 2. Aerators 14 are installed on the integrated aeration pipe 13, and the aerators 14 are evenly arranged. The integrated aeration pipe 13 and the aerators 14 are positioned below the sponge plate packing 9. It should be noted that during the nitrification process of wastewater, all the air transported by the integrated aeration pipe 13 passes through the straight-through channel formed by the sponge plate packing 9 to maintain a certain dissolved oxygen content in the system, providing sufficient oxygen for the formation of the biofilm on the sponge plate packing 9. After the wastewater and the biofilm come into contact, pollutants such as ammonia nitrogen are degraded. Firstly, the high efficiency of removal is achieved through the continuous flushing of aged biofilm and sludge on the surface of the sponge plate packing 9, formed by multiple layers of stacked sponge plate packing 9. This allows the aged biofilm to be peeled off from the packing surface and carried out of the system through the air-water rising process, thus completing the biofilm renewal. The continuous renewal of the biofilm ensures the activity of nitrifying bacteria in the system, so the nitrification load of the system remains stable at a high level. At the same time, the system does not require a separate backwashing system, which can effectively solve the problems of packing blockage caused by the interception of suspended solids and the growth, reproduction and aging of microorganisms during the operation of the biofilm process.

[0058] Example 3

[0059] For the technical aspects of Example 1, please refer to Figures 4-14 It includes a shaking mechanism 3 set on the first support 1, which is used to push the first mounting base 4 and the second mounting base 5 to shake left and right, accelerating the shedding of the aged biofilm and sludge on the surface of the sponge plate packing 9.

[0060] The shaking mechanism 3 includes a rotating shaft 32 fixedly connected to the output end of the drive motor 31. The drive motor 31 is fixedly connected to the upper end of the first bracket 1 and is rotatably connected to the first bracket 1. A connecting shaft 33 is fixedly connected to the rotating shaft 32. A rotating ring 34 is fixedly connected to the end of the connecting shaft 33 away from the rotating shaft 32. Several first wheel seats 35 arranged in a ring array are fixedly connected to the outer wall of the rotating ring 34. A first roller 36 is rotatably connected to each first wheel seat 35. A limit sleeve 37 is provided on the rotating shaft 32.

[0061] Specifically, the drive motor 31 drives the rotating shaft 32 to rotate, which in turn drives the connecting shaft 33 to rotate. The connecting shaft 33 then drives the rotating ring 34 to rotate. The rotating ring 34, through the first wheel seat 35, drives multiple first rollers 36 to rotate. When one of the first rollers 36 engages with the second roller 61 on the second wheel seat 6, it pushes the first mounting base 4 and the second mounting base 5 towards the second bracket 2. Because the connecting plate 38 is engaged with the second bracket 2, the movement of the first mounting base 4 or the second mounting base 5 compresses the first spring 39. As the rotating ring 34 rotates, the first roller 36... Gradually disengaging from roller 61, the first mounting seat 4 or the second mounting seat 5 is pushed back to its original position by the elastic force of spring 39. This process is repeated, with the next roller 36 pushing roller 61 again. This process causes the first and second mounting seats 4 and 5 to vibrate the sponge plate packing 9 horizontally. As a result, the vibration of the sponge plate packing 9 improves the removal of aged biofilm and sludge from the surface of the sponge plate packing 9 during the continuous rinsing of the surface by the aerator 14.

[0062] In this embodiment, a first mounting base 4 and a second mounting base 5 are provided between the first bracket 1 and the second bracket 2. A second wheel seat 6 is fixedly connected to both the first mounting base 4 and the second mounting base 5. A second roller 61 is rotatably connected to the second wheel seat 6. The second roller 61 is fitted with the first roller 36. A first spring 39 is fixedly connected to both the first mounting base 4 and the second mounting base 5. A connecting plate 38 is fixedly connected to the end of the first spring 39 away from the first mounting base 4 or the second mounting base 5. The connecting plate 38 is fitted with the second bracket 2.

[0063] In this embodiment, the lower ends of both bracket 1 and bracket 2 are fixedly connected to a mounting base 12, and the mounting base 12 is provided with a second mounting hole 121.

[0064] Specifically, the No. 1 mounting base 4 and the No. 2 mounting base 5, which are filled with sponge plate packing 9, are slidably inserted into the No. 1 bracket 1 and the No. 2 bracket 2, respectively, and the whole assembly is fixed in the sewage denitrification tank through the No. 2 mounting hole 121 on the fixing base 12.

[0065] Example 4

[0066] Based on Embodiment 3, a limiting mechanism 11 is provided on the first mounting base 4. The limiting mechanism 11 includes several fixed sleeves 119 fixedly connected to the first mounting base 4 at equal intervals. A drive shaft 112 is slidably connected inside the fixed sleeves 119. A drive block 113 is fixedly connected to one end of the drive shaft 112, and a wedge block 116 is fixedly connected to the other end of the drive shaft 112. A stop block 114 is fixedly connected to the drive shaft 112. A second spring 115 is sleeved on the outside of the drive shaft 112 and is located between the stop block 114 and the fixed sleeves 119. Several second limiting blocks 117 arranged in a circular array are slidably connected inside the fixed sleeves 119. A third spring 118 is fixedly connected to the second limiting block 117. The end of the third spring 118 away from the second limiting block 117 is fixedly connected to the fixed sleeve 119, and the second limiting block 117 is fitted with the wedge block 116.

[0067] Specifically, by pulling the drive block 113 upward, the stop block 114 rises, and the stop block 114 compresses the second spring 115. Meanwhile, the drive shaft 112 drives the lower wedge block 116 upward. Under the action of the third spring 118, which is originally in a compressed state, the second limiting block 117 slides into the fixed sleeve 119, and the fixed sleeve 119 is threaded into the threaded groove 101 through the external thread 111, until the second limiting block 117 and the limiting block 119 are engaged. With groove 102 parallel, the drive block 113 is released. Under the elastic force of the second spring 115, the second limiting block 117 is pushed out of the fixed sleeve 119 and locked inside the limiting groove 102. Thus, the force is used to ensure the stability of the fixed installation of the sponge plate sheet filler 9 during the vibration process of the shaking mechanism 3 pushing the first mounting seat 4 and the second mounting seat 5. This prevents the fixed sleeve 119 from being loosened by vibration and detached from the threaded groove 101, thus ensuring the stability of the sponge plate sheet filler 9.

[0068] In this embodiment, a number of connecting blocks 10, which are the same as the number and distribution of the fixed sleeves 119, are slidably connected on the first mounting base 4. Each connecting block 10 is provided with a threaded groove 101, which is threadedly connected to the external thread 111. The lower end of the threaded groove 101 is connected to a limiting groove 102, which is engaged with the second limiting block 117.

[0069] In this embodiment, a sponge plate-shaped filler 9 is provided between the first mounting base 4 and the second mounting base 5. The upper and lower ends of the sponge plate-shaped filler 9 are fixed by the mounting frame 91. It should be noted that the sponge plate-shaped filler 9 can be fixed by bolts or clips, with clips being preferred. There is no need to drill holes in the sponge plate-shaped filler 9. The mounting frame 91 is provided with a guide groove 92, and the second mounting base 5 is provided with a mounting shaft 51. The mounting shaft 51 slides inside the guide groove 92, and the connecting block 10 is provided with a first mounting hole 103, which slides with the mounting shaft 51.

[0070] By sequentially sliding multiple guide grooves 92 onto the mounting shaft 51, the connecting block 10 on the first mounting base 4 is then spliced ​​together through the first mounting hole 103.

[0071] Example 5

[0072] Based on Embodiment 3, both the first bracket 1 and the second bracket 2 are provided with a locking mechanism 8. The locking mechanism 8 includes an electric push rod 84 fixedly connected to the first bracket 1 or the second bracket 2. The output end of the electric push rod 84 is fixedly connected to a first limit block 85, and the first mounting base 4 and the second mounting base 5 are provided with a limit hole 83 that cooperates with the first limit block 85.

[0073] Specifically, during normal use of the sponge plate sheet packing 9, the first limiting block 85 can be pushed into the limiting hole 83 by activating the electric push rod 84 to ensure the stability of the sponge plate sheet packing 9. That is, during the process of aerating sewage through the aerator 14 and adsorbing it through the sponge plate sheet packing 9, the sponge plate sheet packing 9 can always remain fixed. After use, during the process of continuously flushing the aged biofilm and sludge on the surface of the sponge plate sheet packing 9, the first mounting seat 4 and the second mounting seat 5 are released, causing the sponge plate sheet packing 9 to shake continuously.

[0074] In this embodiment, the connecting plate 38 is provided with a slot 310, and the electric push rod 84 located on the side near the second bracket 2 is through the slot 310 to avoid the connecting plate 38 from blocking the electric push rod 84.

[0075] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A novel biofilm system for modifying conventional biochemical systems, comprising a first scaffold (1) and a second scaffold (2), characterized in that, Also includes Sponge plate sheet filler (9) is installed between support No. 1 (1) and support No. 2 (2). The thickness of the sponge plate sheet filler (9) is 30mm-50mm. Several sponge plate sheet fillers (9) are provided, and the interval between several sponge plate sheet fillers (9) arranged in the horizontal direction is set between 30mm-100mm. The sponge plate sheet filler (9) can be stacked 1-5 layers in the longitudinal direction to form a vertical channel. It also includes an integrated aeration pipe (13) and an aerator (14) installed on the integrated aeration pipe (13). The integrated aeration pipe (13) and the aerator (14) are both installed below the sponge plate packing (9). The integrated aeration pipe (13) is used to transport air. The aerator (14) is evenly distributed on the integrated aeration pipe (13) and is used to aerate all the air transported by the integrated aeration pipe (13) through a straight channel formed between several sponge plate packing (9) to maintain a certain amount of dissolved oxygen in the system. Also includes The shaking mechanism (3) is set on the first bracket (1) to push the first mounting seat (4) and the second mounting seat (5) to shake left and right, accelerating the fall of the aged biofilm and sludge on the surface of the sponge plate packing (9). The shaking mechanism (3) includes a rotating shaft (32) fixedly connected to the output end of the drive motor (31). The rotating shaft (32) is connected to a rotating ring (34) via a connecting shaft (33). Several first wheel seats (35) arranged in a ring array are fixedly connected to the outer wall of the rotating ring (34). Each first wheel seat (35) is rotatably connected to a first roller (36). A first mounting base (4) and a second mounting base (5) are provided between the first bracket (1) and the second bracket (2). A second wheel seat (6) is fixedly connected to both the first mounting base (4) and the second mounting base (5). A second roller (61) is rotatably connected to the second wheel seat (6). The second roller (61) is in close contact with the first roller (36). A first spring (39) is fixedly connected to both the first mounting base (4) and the second mounting base (5). A connecting plate (38) is fixedly connected to the end of the first spring (39) away from the first mounting base (4) or the second mounting base (5).

2. The novel biofilm system for modifying conventional biochemical systems according to claim 1, characterized in that, The main body of the sponge plate sheet filler (9) is a cuboid with a porous sponge cross-section.

3. A novel biofilm system for modifying conventional biochemical systems according to claim 1, characterized in that, The air-to-water ratio inside the sponge plate sheet filler (9) is between 4:1 and 8:

1.

4. A novel biofilm system for modifying conventional biochemical systems according to claim 1, characterized in that, A limiting mechanism (11) is provided on the first mounting base (4). The limiting mechanism (11) includes a plurality of fixed sleeves (119) fixedly connected to the first mounting base (4) and arranged at equal intervals. A drive shaft (112) is slidably connected inside the fixed sleeves (119). A drive block (113) is fixedly connected to one end of the drive shaft (112), and a wedge block (116) is fixedly connected to the other end of the drive shaft (112). A stop block (114) is fixedly connected to the drive shaft (112). A second spring (115) is sleeved on the outside, and the second spring (115) is located between the stop block (114) and the fixed sleeve post (119). Several second limit blocks (117) arranged in a ring array are slidably connected inside the fixed sleeve post (119), and a third spring (118) is fixedly connected on the second limit block (117). The end of the third spring (118) away from the second limit block (117) is fixedly connected to the fixed sleeve post (119), and the second limit block (117) is fitted with the wedge block (116).

5. A novel biofilm system for modifying conventional biochemical systems according to claim 4, characterized in that, The first mounting base (4) is slidably connected with several connecting blocks (10) of the same number and distribution as the fixed sleeve (119). Each connecting block (10) is provided with a threaded groove (101). The threaded groove (101) is threadedly connected to the external thread (111), and the lower end of the threaded groove (101) is connected to a limiting groove (102). The limiting groove (102) is engaged with the second limiting block (117).

6. A novel biofilm system for modifying conventional biochemical systems according to claim 5, characterized in that, The sponge plate sheet filler (9) is set between the first mounting seat (4) and the second mounting seat (5). The upper and lower ends of the sponge plate sheet filler (9) are fixed by the mounting frame (91). The mounting frame (91) is provided with a guide groove (92), and the second mounting seat (5) is provided with a mounting shaft (51). The mounting shaft (51) slides inside the guide groove (92), and the connecting block (10) is provided with a first mounting hole (103). The first mounting hole (103) slides with the mounting shaft (51).

7. A novel biofilm system for modifying conventional biochemical systems according to claim 1, characterized in that, Both the first bracket (1) and the second bracket (2) are provided with locking mechanisms (8). The locking mechanism (8) includes an electric push rod (84) fixedly connected to the first bracket (1) or the second bracket (2). The output end of the electric push rod (84) is fixedly connected to a first limiting block (85). The first mounting base (4) and the second mounting base (5) are provided with limiting holes (83) that cooperate with the first limiting block (85).

8. A novel biofilm system for modifying conventional biochemical systems according to claim 1, characterized in that, The lower ends of the first bracket (1) and the second bracket (2) are fixedly connected to a fixing seat (12), and the fixing seat (12) is provided with a second mounting hole (121).

Images