A biochemical treatment device for fertilizer processing wastewater and its use method

Abstract

The present invention discloses a biochemical treatment device for fertilizer processing wastewater and a method for using the same, and relates to the technical field of wastewater treatment equipment, including a driving mechanism, a transmission mechanism fixedly connected to the front end of the driving mechanism, a variable propeller mechanism fixedly connected to the front end of the transmission mechanism, and a guide plate installed at the front end of the variable propeller mechanism. In the present invention, according to the characteristics that the amount of wastewater produced and the water quality of the fertilizer processing plant change significantly at different times, the two variable propeller mechanisms and the auxiliary stirring paddles cooperate with each other to solve the problem that the existing biochemical treatment equipment cannot cause insufficient or excessive stirring of the wastewater and the activated sludge in the biochemical treatment stage according to the changes in the amount of wastewater produced and the water quality, so that the activated sludge can be fully mixed with the wastewater at different stages, promoting the organic matter, nutrients, etc. in the wastewater to diffuse into the activated sludge more quickly, and improving the efficiency of the wastewater biochemical treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment equipment, and in particular to a biochemical treatment equipment for fertilizer processing sewage and a use method thereof. Background Art

[0002] Fertilizer processing wastewater contains a large amount of nitrogen and phosphorus organic matter. Using the activated sludge method to biochemically treat fertilizer processing wastewater is a commonly used treatment process. When using the activated sludge method to treat fertilizer processing wastewater, in order to make the sewage and activated sludge fully contact, underwater stirring equipment will be used in the aeration tank and anaerobic fermentation tank during the biochemical treatment stage. The underwater stirring equipment allows the microorganisms in the activated sludge to fully contact with the organic matter in the sewage, thereby quickly and fully treating the sewage.

[0003] For example, the publication number: CN116081807B discloses a "sewage biochemical treatment device", which includes a tank body, a support leg is provided at the bottom of the tank body, and a liquid inlet pipe is provided at the top of the tank body. This application can disassemble and install the external spiral tube, so as to realize the replacement of the activated sludge block and the cleaning of the external spiral tube, which is convenient to use. Secondly, this application divides the tank body into several compartments, thereby reducing the pressure of the sewage on the air outlet valve, which is convenient for the discharge of gas. In addition, the amount of sewage in each compartment can be controlled through the L-shaped tube;

[0004] The above application is based on the biochemical treatment of sewage by the activated sludge method. However, fertilizer production is intermittent and seasonal, which causes the amount and quality of sewage generated by fertilizer factories during the fertilizer production process to fluctuate greatly at different times. During the peak production period, the amount of sewage generated will increase sharply, while during the off-season, the amount of sewage will decrease significantly. In terms of water quality, there are also large differences in the composition of sewage generated by different batches of fertilizer production.

[0005] However, the existing underwater mixing equipment is mainly designed and manufactured for sewage treatment plants that treat a stable amount of sewage. When used in fertilizer processing plants to treat sewage generated during fertilizer processing, there is a lack of effective regulating mechanism to adjust the degree of sewage mixing, resulting in insufficient sewage mixing and excessive sewage mixing during operation. Specifically: First, when insufficient mixing occurs, it will lead to uneven distribution of microorganisms, and the number of microorganisms in some areas is insufficient to effectively degrade organic matter and remove pollutants, thereby reducing the efficiency of biological treatment. At the same time, it will also cause activated sludge to accumulate at the bottom of the pool, reducing the effective treatment volume, and even causing pipes and equipment to be blocked, making it impossible to carry out sewage biochemical treatment; Second, when excessive mixing occurs, the dissolved oxygen content in the sewage will be too high or too low, which is not conducive to the growth and metabolism of microorganisms, thereby affecting the biochemical treatment efficiency of sewage. At the same time, it will also increase the energy consumption of equipment operation, accelerate equipment aging, and increase the cost of sewage treatment. Summary of the invention

[0006] The object of the present invention is to provide a biochemical treatment device for fertilizer processing wastewater and a method of using the same to solve the problems raised by the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a biochemical treatment device for fertilizer processing wastewater, comprising a biochemical pool, a sedimentation pool is arranged on one side of the biochemical pool, and an aeration pool is arranged on the other side of the biochemical pool, a sewage lifting pump is installed between the sedimentation pool and the biochemical pool and between the biochemical pool and the aeration pool, the sewage lifting pump is used to transport the sewage treated in the sedimentation pool to the inside of the biochemical pool, and transport the sewage treated in the biochemical pool to the inside of the aeration pool, the biochemical pool is used to provide a space for mixing sewage and activated sludge and performing biological reactions, the aeration pool is used to provide an aeration space for the sewage and activated sludge, an aerator is installed on the upper part of the aeration pool, and an aeration pipe is installed inside the aeration pool, the aerator and the aeration pipe are used to aerate the sewage and activated sludge inside the aeration pool;

[0008] A biochemical treatment mixing device is installed inside the biochemical pool, and the biochemical treatment mixing device includes a driving mechanism, a transmission mechanism is fixedly connected to the front end of the driving mechanism, a variable propeller mechanism is fixedly connected to the front end of the transmission mechanism, the driving mechanism is used to provide power for the variable propeller mechanism to perform stirring operations, the transmission mechanism is used to transmit the power generated by the driving mechanism to the variable propeller mechanism, and an auxiliary stirring paddle is installed at the end of the transmission mechanism, the transmission mechanism is used to control the start or shut down of the auxiliary stirring paddle, and the variable propeller mechanism and the auxiliary stirring paddle are used to mix and stir activated sludge and sewage.

[0009] Preferably, the driving mechanism includes a power distribution box, a No. 2 connecting shaft and a mounting base, the power distribution box is fixedly connected to a mounting frame inside, two No. 1 connecting shafts are rotatably connected to the upper part of the mounting frame, the surface of one of the No. 1 connecting shafts is fixedly connected to a No. 1 limiting roller, the No. 2 connecting shaft is located below the No. 1 connecting shaft and is rotatably connected to the mounting frame, the upper part of the mounting base is fixedly connected to a power distribution box, a driving motor is installed on one side of the power distribution box, one end of the two No. 1 connecting shafts are respectively fixedly connected to driven gears, and the other ends of the two No. 1 connecting shafts are fixedly connected to a No. 1 pulley, the output end of the driving motor is fixedly connected to a driving gear, and the driving gear is meshed with the driven gear.

[0010] Preferably, the transmission mechanism comprises a transmission box, a connecting box, a transmission rubber wheel, a first limiting roller and a second limiting roller, the transmission box is fixedly connected to the side of the power distribution box, and the transmission box is rotatably connected to the first connecting shaft and the second connecting shaft respectively, the connecting box is fixedly connected to the side of the transmission box, and a pushing component is installed inside the connecting box, the pushing component is used to adjust the position of the transmission rubber wheel, the surface of the first limiting roller is fixedly connected to the active rubber wheel, the surface of the second limiting roller is fixedly connected to the driven rubber wheel, the transmission rubber wheel is simultaneously in contact with the surfaces of the active rubber wheel and the driven rubber wheel, and the front end of the second connecting shaft is fixedly connected to the auxiliary stirring paddle;

[0011] The pushing assembly includes a hydraulic telescopic rod, which is fixedly connected to the inside of the connecting box, and a movable plate is fixedly connected to the end of the hydraulic telescopic rod, a No. 2 connecting frame is installed on the side of the movable plate, a plate-type pressure sensor is installed between the movable plate and the No. 2 connecting frame, a No. 3 connecting shaft is rotatably connected to the surface of the No. 2 connecting frame, and the No. 3 connecting shaft is fixedly connected to the transmission rubber wheel, the active rubber wheel 28, the driven rubber wheel 210 and the transmission rubber wheel 217 are all polyurethane rubber wheels, the friction coefficient between the transmission rubber wheel 217 and the active rubber wheel 28 is 0.6-0.7, and the friction coefficient between the transmission rubber wheel 217 and the driven rubber wheel 210 is 0.6-0.7.

[0012] Preferably, a guide groove is provided inside the connection box, a guide plate is fixedly connected to the surface of the movable plate, and the guide plate is located inside the guide groove and is slidably connected to the connection box.

[0013] Preferably, a connecting frame No. 1 is fixedly connected to the upper part of the transmission box, and two variable propeller mechanisms are installed at the lower end of the connecting frame No. 1, and the variable propeller mechanism includes a driving shaft, and the driving shaft is rotatably connected to the connecting frame No. 1, one end of the driving shaft is fixedly connected to a No. 2 pulley, and the other end of the driving shaft is fixedly connected to an angle adjustment frame, a transmission belt is movably connected to the surface of the No. 2 pulley, and the transmission belt is movably connected to the No. 1 pulley, and a stirring paddle blade is rotatably connected to the surface of the angle adjustment frame.

[0014] Preferably, an electric cylinder is provided at the rear end of the driving shaft, and the electric cylinder is fixedly connected to the side of the No. 1 connecting frame. The angle adjustment frame is composed of a rotating base and a connecting rod assembly. A rotating shaft is provided on the surface of the rotating base. The stirring paddle blade is fixedly connected to the rotating shaft. The electric cylinder is used to drive the connecting rod assembly to drive the rotating shaft to rotate.

[0015] Preferably, a guide plate is installed at the front end of the variable propeller mechanism, and the guide plate is used to guide the water flow generated by the variable propeller mechanism during the stirring process. Angle adjustment components are installed at both ends of the guide plate, and a telescopic mechanism is fixedly connected to the upper part of the angle adjustment component. The telescopic mechanism is used to drive the angle adjustment component to adjust the angle of the guide plate. The angle adjustment component includes a plurality of fixed shells, and the interiors of the plurality of fixed shells are rotatably connected with adjustment gears, and the interiors of the adjustment gears are slidably connected with racks, and the racks are fixed to each other by connecting rods, and the connecting rods are slidably connected to the fixed shells. Both ends of the guide plate pass through the fixed shells and are fixedly connected to the adjustment gears, and the bottom of the angle adjustment component is fixedly connected with a fixed plate.

[0016] Preferably, the telescopic mechanism includes a fixed frame, which is fixedly connected to the upper part of the transmission box, and an electro-hydraulic push rod is fixedly connected to the lower part of the fixed frame, a connecting plate is fixedly connected to the lower part of the electro-hydraulic push rod, and a push rod is fixedly connected to the uppermost rack.

[0017] Preferably, a water flow velocity sensor is installed between the guide plate and the variable propeller mechanism, a thin film pressure sensor is installed on the surface of the agitator blade, a position sensor is installed on the end of the guide plate, and a sludge concentration sensor is installed in front of the variable propeller mechanism.

[0018] A method for using a biochemical treatment device for fertilizer processing wastewater, comprising the following steps:

[0019] S1. First, use filtering equipment to filter the floating objects in the sewage, then transport the sewage to the mixing tank for dosing treatment, then separate it through the sedimentation tank, and then transport the sewage to the biochemical pool for biochemical treatment;

[0020] S2. Install the biochemical treatment mixing equipment inside the biochemical pool at the sewage biochemical treatment stage, drive the two No. 1 connecting shafts to rotate through the driving motor, and then drive the two driving shafts to rotate through the transmission mechanism, and then drive the stirring paddle blades to rotate by the driving shaft, so as to stir the sewage and activated sludge and push the sewage to flow;

[0021] S3. According to the amount and quality of sewage, when the two variable propeller mechanisms do not stir it sufficiently, the driving component drives the transmission rubber wheel to fit with the active rubber wheel and the driven rubber wheel at the same time, so that the active rubber wheel drives the driven rubber wheel to rotate, and then drives the second connecting shaft and the auxiliary stirring paddle to rotate, so that the sewage is fully stirred by the auxiliary stirring paddle;

[0022] S4. According to the sewage concentration sensor's feedback on the sewage concentration data at different depths inside the treatment pool, the telescopic mechanism drives the angle adjustment component to move, and then adjusts the angle of the guide plate, so that the water flows into the water layer with too high sludge concentration, so that the sewage and activated sludge are mixed more fully and evenly;

[0023] S5. The treated sewage in the biochemical pool is transported to the aeration pool for treatment. After the treated sewage in the aeration pool is precipitated in the secondary sedimentation tank, it is deeply treated by the filter pool, disinfection pool and other treatment equipment in the tertiary treatment stage.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. In the present invention, when the amount of sewage generated by the fertilizer processing plant is relatively large and the water quality is relatively poor, when the two variable propeller mechanisms do not sufficiently stir the sewage and the activated sludge, the driving rubber wheel is driven by the pushing component to fit the active rubber wheel and the driven rubber wheel at the same time, thereby driving the second connecting shaft and the auxiliary stirring paddle to rotate, and the sewage is fully stirred by the auxiliary stirring paddle to make the microorganisms evenly distributed, so that the organic matter, nutrients, etc. in the sewage can be promoted to diffuse more quickly into the activated sludge and be used by the microorganisms. At the same time, the activated sludge can be prevented from accumulating at the bottom of the pool, resulting in a reduction in the amount of effective microorganisms, thereby improving the efficiency of biochemical treatment. When the amount of sewage generated by the fertilizer processing plant is small and the water quality is relatively good, only two sets of stirring paddle blades are used for stirring to avoid excessive stirring, thereby avoiding adverse factors on the growth and metabolism of microorganisms and reducing the activity and number of microorganisms.

[0026] 2. In the present invention, during the process of stirring the sewage, the degree of stirring of the sewage can be adjusted by adjusting the angle of the stirring paddle blades, the guide angle of the guide plate and the rotation of the driving motor. When the concentration of the sludge is monitored to be too high, the flow rate of the sewage is adjusted by adjusting the angle of the stirring paddle blades, and the angle of the guide plate is adjusted at the same time to fully mix the activated sludge with the sewage. When the water flow rate is too slow and the water flow pressure is too low, the water flow rate and the water flow pressure can be increased by adjusting the angle of the stirring paddle blades and the speed of the driving motor to avoid sufficient mixing of the sewage and the activated sludge, avoid the occurrence of a stirring dead zone or excessive stirring, which is conducive to the sewage being fully treated in different biochemical treatment stages. By controlling the water flow rate, the residence time of the sewage in the biological treatment stage can be controlled, so that the microorganisms in the activated sludge can degrade and transform the pollutants in a reasonable time, avoiding the situation where the biochemical treatment time is too long, resulting in a decrease in treatment efficiency, and the biochemical treatment time is too short, resulting in insufficient sewage treatment.

[0027] 3. In the present invention, the guide plate is limited by the guide groove to improve the stability of the movement of the movable plate, thereby improving the stability of the horizontal movement and rotation of the transmission rubber wheel. The pressure on the transmission rubber wheel in the horizontal direction is monitored by the plate pressure sensor. When the pressure on the transmission rubber wheel is lower than the set threshold, the hydraulic telescopic rod is extended to increase the pressure on the transmission rubber wheel in the horizontal direction, thereby ensuring the stability of the friction between the transmission rubber wheel and the active rubber wheel and the driven rubber wheel, thereby ensuring that the active rubber wheel can stably drive the driven rubber wheel to rotate. The auxiliary stirring paddle can fully stir and mix the sewage, avoiding the problem of uneven treatment effect caused by excessively high or low local microbial concentration. The evenly distributed microorganisms can more effectively degrade and transform pollutants in the sewage, thereby improving the treatment efficiency and the stability of the effluent water quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of a biochemical treatment device for fertilizer processing wastewater according to the present invention;

[0029] Figure 2 A schematic diagram of a sewage treatment process of a biochemical treatment device for fertilizer processing sewage according to the present invention;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure of a biochemical treatment mixing device in a biochemical treatment device for fertilizer processing wastewater according to the present invention;

[0031] Figure 4 It is a three-dimensional structural schematic diagram of a variable propeller mechanism in a biochemical treatment device for fertilizer processing wastewater according to the present invention;

[0032] Figure 5This is a schematic diagram of the internal three-dimensional structure of a power distribution box in a fertilizer processing wastewater biochemical treatment device of the present invention;

[0033] Figure 6 This is a schematic diagram of the connection structure between the driving gear and the driven gear in a biochemical treatment device for fertilizer processing wastewater according to the present invention;

[0034] Figure 7 This is a schematic diagram of the connection structure between the active rubber wheel and the transmission rubber wheel in a biochemical treatment device for fertilizer processing wastewater according to the present invention;

[0035] Figure 8 It is a cross-sectional side structural schematic diagram of a connection box in a fertilizer processing wastewater biochemical treatment device of the present invention;

[0036] Fig. 9 It is a schematic diagram of the movement of a transmission rubber wheel in a biochemical treatment device for fertilizer processing wastewater according to the present invention;

[0037] Fig.10 This is a schematic diagram of the internal three-dimensional structure of a transmission box in a biochemical treatment device for fertilizer processing wastewater according to the present invention;

[0038] Fig.11 A stirring schematic diagram of a biochemical treatment device for fertilizer processing wastewater according to the present invention;

[0039] Fig.12 It is a schematic diagram of the internal front view structure of a fixed shell in a biochemical treatment device for fertilizer processing wastewater of the present invention;

[0040] Fig.13 A schematic diagram of the rotation speed of a guide plate in a biochemical treatment device for fertilizer processing wastewater according to the present invention;

[0041] Fig.14 The present invention is an operation flow chart of a biochemical treatment device for fertilizer processing wastewater.

[0042] In the figure: 1. driving mechanism; 11. mounting base; 12. driving motor; 13. power distribution box; 14. mounting frame; 15. driving gear; 16. driven gear; 17. No. 1 connecting shaft; 18. No. 2 connecting shaft; 2. transmission mechanism; 21. transmission box; 22. connecting box; 23. No. 1 connecting frame; 24. No. 1 pulley; 25. No. 2 pulley; 26. transmission belt; 27. No. 1 limiting roller; 28. driving rubber wheel; 29. ​​No. 2 limiting roller; 210. driven rubber wheel; 211. auxiliary stirring paddle; 212. hydraulic telescopic rod; 213. moving plate; 214. Plate-type pressure sensor; 215. No. 2 connecting frame; 216. No. 3 connecting shaft; 217. Transmission rubber wheel; 218. Guide plate; 219. Guide groove; 3. Variable propeller mechanism; 31. Drive shaft; 32. Agitator blade; 33. Angle adjustment frame; 34. Electric cylinder; 4. Fixed plate; 5. Angle adjustment assembly; 51. Fixed shell; 52. Adjusting gear; 53. Rack; 54. Connecting rod; 6. Guide plate; 7. Telescopic mechanism; 71. Fixed frame; 72. Electro-hydraulic push rod; 73. Connecting plate; 74. Push rod; 8. Biochemical tank; 9. Aeration tank. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described 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 creative work are within the scope of protection of the present invention.

[0044] Example 1: Reference Figure 1-Figure 14As shown: A biochemical treatment equipment for fertilizer processing wastewater, including a biochemical pool 8, a sedimentation pool is arranged on one side of the biochemical pool 8, and an aeration pool 9 is arranged on the other side of the biochemical pool 8, and sewage lifting pumps are installed between the sedimentation pool and the biochemical pool 8 and between the biochemical pool 8 and the aeration pool 9, and the sewage lifting pump is used to transport the sewage treated in the sedimentation pool to the inside of the biochemical pool 8, and transport the sewage treated in the biochemical pool 8 to the inside of the aeration pool 9, the biochemical pool 8 is used to provide a space for mixing sewage and activated sludge and conducting biological reactions, the aeration pool 9 is used to provide aeration space for sewage and activated sludge, and an aerator is installed on the upper part of the aeration pool 9, and an aeration pipe is installed inside the aeration pool 9, and the aerator and the aeration pipe are used to aerate the sewage and activated sludge inside the aeration pool 9. The activated sludge is aerated, and a biochemical treatment mixing device is installed inside the biochemical pool 8. The biochemical treatment mixing device includes a driving mechanism 1, a transmission mechanism 2 is fixedly connected to the front end of the driving mechanism 1, a variable propeller mechanism 3 is fixedly connected to the front end of the transmission mechanism 2, and a guide plate 6 is installed at the front end of the variable propeller mechanism 3. The driving mechanism 1 is used to provide power for the variable propeller mechanism 3 to perform stirring operations, and the transmission mechanism 2 is used to transmit the power generated by the driving mechanism 1 to the variable propeller mechanism 3, and an auxiliary stirring paddle 211 is installed at the end of the transmission mechanism 2, and the transmission mechanism 2 is used to control the start or shut down of the auxiliary stirring paddle 211. The variable propeller mechanism 3 and the auxiliary stirring paddle 211 are used to mix and stir the activated sludge and sewage;

[0045] The guide plate 6 is used to guide the water flow generated by the variable propeller mechanism 3 during the stirring process. The driving mechanism 1 includes a mounting base 11 and a No. 2 connecting shaft 18. The upper part of the mounting base 11 is fixedly connected to a power distribution box 13, and a driving motor 12 is installed on one side of the power distribution box 13. The power distribution box 13 is fixedly connected to a mounting frame 14 inside. The upper part of the mounting frame 14 is rotatably connected to two No. 1 connecting shafts 17, and one end of the two No. 1 connecting shafts 17 is respectively fixedly connected to a driven gear 16, and the other end of the two No. 1 connecting shafts 17 is fixedly connected to a No. 1 pulley 24, and a No. 1 limiting roller 27 is fixedly connected to the surface of one of the No. 1 connecting shafts 17. The No. 2 connecting shaft 18 is located below the No. 1 connecting shaft 17 and is rotatably connected to the mounting frame 14. The output end of the driving motor 12 is fixedly connected to a driving gear 15, and the driving gear 15 is meshed with the driven gear 16.

[0046] The transmission mechanism 2 includes a transmission box 21, a connection box 22, a transmission rubber wheel 217, a first limiting roller 27 and a second limiting roller 29. The transmission box 21 is fixedly connected to the side of the power distribution box 13, and the transmission box 21 is rotatably connected to the first connecting shaft 17 and the second connecting shaft 18 respectively. The connection box 22 is fixedly connected to the side of the transmission box 21, and a pushing component is installed inside the connection box 22. The pushing component is used to adjust the position of the transmission rubber wheel 217. The front end of the second connecting shaft 18 is fixedly connected to the auxiliary stirring paddle 211.

[0047] The surface of the No. 1 limiting roller 27 is fixedly connected to the active rubber wheel 28, the surface of the No. 2 limiting roller 29 is fixedly connected to the driven rubber wheel 210, and the transmission rubber wheel 217 is in contact with the surfaces of the active rubber wheel 28 and the driven rubber wheel 210 at the same time. The active rubber wheel 28, the driven rubber wheel 210 and the transmission rubber wheel 217 are all made of polyurethane rubber wheels. The friction coefficient between the transmission rubber wheel 217 and the active rubber wheel 28 is 0.6-0.7, and the friction coefficient between the transmission rubber wheel 217 and the driven rubber wheel 210 is 0.6-0.7.

[0048] In this embodiment, when treating the sewage generated by fertilizer processing, the sewage is first subjected to primary treatment. In the process of primary treatment, the floating objects in the sewage are first filtered, salvaged and collected by filtering equipment, and then the sewage is transported to a mixing tank for drug treatment, and the reagents are used to react with the suspended matter and colloidal substances in the water, so that the suspended matter and colloidal substances in the sewage undergo a coagulation reaction to form large-particle flocs, which are then separated by a sedimentation tank, and then the sewage in the sedimentation tank is transported to the biochemical tank 8 by a lifting pump to be mixed with activated sludge, and the sewage is subjected to secondary treatment by the activated sludge, and the nitrifying bacteria in the activated sludge convert a large amount of ammonia nitrogen substances in the fertilizer processing sewage into nitrites, which are then further converted into nitrates, and then the nitrates and nitrites are converted into nitrites by denitrifying bacteria. Salt is reduced to nitrogen gas, thereby achieving denitrification, and then the phosphorus in the fertilizer processing wastewater is taken up by polyphosphate bacteria. At the same time, the activated sludge also contains sulfur bacteria, fungi, Bacillus and other microorganisms, which decompose and transform sulfide, cellulose, protein and other substances in the sewage. The sewage is fully biochemically treated by various microorganisms. The sewage treated with activated sludge in the biochemical tank 8 is then transported to the aeration tank 9 by a sewage lifting pump for aeration treatment. The sewage and the activated sludge in the aeration tank 9 are biochemically treated again. The sewage treated by the aeration tank 9 enters the secondary sedimentation tank for sedimentation treatment. The sewage after sedimentation again passes through the filter tank, disinfection tank and other treatment equipment in the tertiary treatment stage to deeply treat the sewage, and then it is discharged to ensure that the sewage generated by the fertilizer processing is fully treated;

[0049] When sewage enters the biochemical pool 8, the driving motor 12 drives the driving gear 15 to rotate, thereby driving the driven gear 16 to rotate, and then driving the two No. 1 connecting shafts 17 to rotate. The driving gear 15 and the two driven gears 16 are meshed with each other, so that the two No. 1 connecting shafts 17 rotate at the same time, and then the No. 1 pulley 24, the transmission belt 26 and the No. 2 pulley 25 drive the driving shaft 31 and the stirring paddle blades 32 to rotate. At this time, the two groups of stirring paddle blades 32 also start to rotate at the same time to stir and mix the sewage and the activated sludge. Through the two groups of stirring paddle blades 32, stirring can be generated in a larger range, so that the sewage and the activated sludge are more fully mixed, and the mixing dead zone is avoided;

[0050] When the sewage produced by the fertilizer processing plant is in a large amount and of poor quality, and the two variable propeller mechanisms 3 do not sufficiently stir the sewage and the activated sludge, the driving rubber wheel 217 is driven by the pushing component to fit with the active rubber wheel 28 and the driven rubber wheel 210 at the same time. Under the interaction of the friction between the active rubber wheel 28 and the driving rubber wheel 217, the active rubber wheel 28 drives the driving rubber wheel 217 to rotate, and then the friction between the driving rubber wheel 217 and the driven rubber wheel 210 causes the driven rubber wheel 210 to rotate, thereby driving the second connecting shaft 18 and the auxiliary stirring paddle 211 to rotate, and the sewage is fully stirred by the auxiliary stirring paddle 211. By fully stirring the sewage and the activated sludge, the activated sludge and the sewage are fully contacted, so that the organic matter and nutrients in the sewage can be diffused into the activated sludge more quickly and used by microorganisms, thereby improving the efficiency of sewage biochemical treatment;

[0051] When the amount of sewage generated by the fertilizer processing plant is small and the water quality is relatively good, the driving component drives the transmission rubber wheel 217 to separate from the surface of the active rubber wheel 28, so that the auxiliary stirring paddle 211 no longer performs the stirring operation, thereby avoiding excessive stirring, thereby avoiding adverse factors for the growth and metabolism of microorganisms, reducing the activity and number of microorganisms, further improving the efficiency of the equipment for biochemical treatment of sewage, and avoiding excessive work of the equipment, thereby reducing energy consumption, saving energy and protecting the environment, and saving costs.

[0052] Embodiment 2: According to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 and Fig.10As shown, the pushing assembly includes a hydraulic telescopic rod 212, which is fixedly connected to the inside of the connecting box 22, and a movable plate 213 is fixedly connected to the end of the hydraulic telescopic rod 212, a No. 2 connecting frame 215 is installed on the side of the movable plate 213, a plate-type pressure sensor 214 is installed between the movable plate 213 and the No. 2 connecting frame 215, a No. 3 connecting shaft 216 is rotatably connected to the surface of the No. 2 connecting frame 215, and the No. 3 connecting shaft 216 is fixedly connected to a transmission rubber wheel 217, a guide groove 219 is provided inside the connecting box 22, a guide plate 218 is fixedly connected to the surface of the movable plate 213, the guide plate 218 is located in the guide groove 219 and is slidably connected to the connecting box 22, a No. 1 connecting frame 23 is fixedly connected to the upper part of the transmission box 21, and two variable propeller mechanisms 3 are installed at the lower end of the No. 1 connecting frame 23.

[0053] In this embodiment, when the hydraulic telescopic rod 212 pushes the movable plate 213 to slide along the connecting box 22, the guide plate 218 is limited by the guide groove 219, so as to improve the stability of the movement of the movable plate 213, thereby improving the stability of the horizontal movement and rotation of the transmission rubber wheel 217. The pressure on the transmission rubber wheel 217 in the horizontal direction is monitored by the plate pressure sensor 214. When the pressure on the transmission rubber wheel 217 is lower than the set threshold, the hydraulic telescopic rod 212 is extended to increase the pressure on the transmission rubber wheel 217 in the horizontal direction, thereby ensuring that the friction between the transmission rubber wheel 217 and the active rubber wheel 28 and the driven rubber wheel 210 is stable, thereby ensuring that the active rubber wheel 28 can stably drive the driven rubber wheel 210 to rotate, so that the auxiliary stirring paddle 211 can stably and fully stir and mix the sewage, thereby avoiding the problem of uneven treatment effect caused by excessively high or low local microbial concentration. The evenly distributed microorganisms can more effectively degrade and transform pollutants in the sewage, thereby improving the treatment efficiency and the stability of the effluent water quality.

[0054] Embodiment 3: According to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.10 , Fig.12 , Fig.13 and Fig.14As shown, the variable propeller mechanism 3 includes a driving shaft 31, which is rotatably connected to the No. 1 connecting frame 23, one end of the driving shaft 31 is fixedly connected to the No. 2 pulley 25, and the other end of the driving shaft 31 is fixedly connected to the angle adjustment frame 33, the surface of the No. 2 pulley 25 is movably connected with a transmission belt 26, the transmission belt 26 is movably connected to the No. 1 pulley 24, the surface of the angle adjustment frame 33 is rotatably connected with a stirring paddle blade 32, an electric cylinder 34 is provided at the rear end of the driving shaft 31, the electric cylinder 34 is fixedly connected to the side of the No. 1 connecting frame 23, the angle adjustment frame 33 is composed of a rotating base and a connecting rod assembly, a rotating shaft is provided on the surface of the rotating base, the stirring paddle blade 32 is fixedly connected to the rotating shaft, the electric cylinder 34 is used to drive the connecting rod assembly to drive the rotating shaft to rotate, angle adjustment components 5 are installed at both ends of the guide plate 6, and a telescopic mechanism 7 is fixedly connected to the upper part of the angle adjustment component 5, and the telescopic mechanism 7 is used to drive the angle adjustment component 5 to adjust the angle of the guide plate 6, and the angle adjustment component 5 includes multiple A fixed shell 51 is provided, and the interiors of the fixed shells 51 are all rotatably connected with adjusting gears 52, and the interiors of the adjusting gears 52 are all slidably connected with racks 53, the racks 53 are fixed to each other by connecting rods 54, and the connecting rods 54 are slidably connected to the fixed shells 51. Both ends of the guide plate 6 pass through the fixed shells 51 and are fixedly connected to the adjusting gears 52. The bottom of the angle adjustment component 5 is fixedly connected to a fixed plate 4, and the telescopic mechanism 7 includes a fixed frame 71, the fixed frame 71 is fixedly connected to the upper part of the transmission box 21, and the lower part of the fixed frame 71 is fixedly connected to an electro-hydraulic push rod 72, the lower part of the electro-hydraulic push rod 72 is fixedly connected to a connecting plate 73, the lower part of the connecting plate 73 is fixedly connected to a push rod 74, and the push rod 74 is fixedly connected to the uppermost rack 53. A water flow velocity sensor is installed between the guide plate 6 and the variable propeller mechanism 3, a thin film pressure sensor is installed on the surface of the stirring blade 32, a position sensor is installed at the end of the guide plate 6, and a sludge concentration sensor is installed in front of the variable propeller mechanism 3.

[0055] In this embodiment, in the process of the driving mechanism 1 driving the transmission mechanism 2 to drive the variable propeller mechanism 3 to stir and mix the sewage, the thin film pressure sensor on the surface of the stirring blade 32 monitors the pressure on its surface, the water flow velocity sensor monitors the flow velocity of the sewage, and the sludge concentration sensor monitors the concentration of sludge in the sewage. When the sensors detect abnormal data during the sewage treatment process, for example, the sludge concentration is too high, the electric cylinder 34 is extended and retracted, thereby pushing the angle adjustment frame 33 to move, and then the angle adjustment frame 33 pulls the rotating shaft. The rotating shaft is rotated along the rotating base, thereby driving the stirring blade 32 to rotate and adjusting the angle, thereby adjusting the flow rate of the sewage, so that the activated sludge and the sewage are fully mixed, and at the same time, the guide plate 6 is driven to rotate by extending or shortening the electro-hydraulic push rod 72, and the sewage is guided to the area with higher sludge concentration through the guide plate 6; when the water flow speed is too slow and the water flow pressure is too low, the angle of the stirring blade 32 and the speed of the driving motor 12 are adjusted to increase the water flow speed and the water flow pressure, so that the sewage and the activated sludge are fully mixed to avoid the occurrence of a stirring dead zone;

[0056] The pressure and flow velocity of sewage flow and the concentration of sludge in sewage are monitored by various sensors during sewage treatment, and the common problems in sewage treatment are solved by adjusting the variable propeller mechanism 3, the guide plate 6 and the driving mechanism 1. When adjusting the angle of the guide plate 6, the push rod 74 is driven to push or pull the rack 53 downward by extending or shortening the length of the electro-hydraulic push rod 72, thereby driving the adjusting gear 52 to rotate, and then driving the angle of the guide plate 6 to be adjusted. The angle of the guide plate 6 is monitored by the position sensor to ensure that the angle of the guide plate 6 is accurately adjusted;

[0057] By adjusting the flow rate of sewage, the residence time of sewage in the biological treatment stage can be controlled, so that the microorganisms in the activated sludge can degrade and transform pollutants in a reasonable time, avoiding the situation where the biochemical treatment time is too long, resulting in a decrease in treatment efficiency, and the biochemical treatment time is too short, resulting in insufficient sewage treatment. At the same time, by adjusting the sludge concentration, it is ensured that during the operation of the biochemical treatment equipment, when the sludge concentration is within an unreasonable range, the sludge concentration can be quickly adjusted, thereby ensuring that the activated sludge in the biochemical treatment stage can fully treat the sewage.

[0058] Embodiment 4: A method for using a biochemical treatment device for fertilizer processing wastewater, comprising the following steps:

[0059] Step 1: First, use a filtering device to filter the floating objects in the sewage, then transport the sewage to a mixing tank for dosing treatment, then separate it through a sedimentation tank, and then transport the sewage to a biochemical tank 8 for biochemical treatment;

[0060] Step 2: Install the biochemical treatment mixing device inside the biochemical pool 8 at the sewage biochemical treatment stage, and drive the two No. 1 connecting shafts 17 to rotate through the driving motor 12, thereby driving the two driving shafts 31 to rotate through the transmission mechanism 2, and then the driving shaft 31 drives the stirring blade 32 to rotate, so as to stir the sewage and the activated sludge and promote the sewage to flow;

[0061] Step 3: According to the amount and quality of the sewage, when the two variable propeller mechanisms 3 do not stir it sufficiently, the driving component drives the transmission rubber wheel 217 to fit with the active rubber wheel 28 and the driven rubber wheel 210 at the same time, so that the active rubber wheel 28 drives the driven rubber wheel 210 to rotate, and then drives the second connecting shaft 18 and the auxiliary stirring paddle 211 to rotate, and the sewage is fully stirred by the auxiliary stirring paddle 211;

[0062] Step 4: According to the sewage concentration sensor's feedback of the sewage concentration data at different depths inside the treatment tank, the telescopic mechanism 7 drives the angle adjustment component 5 to move, and then adjusts the angle of the guide plate 6, so that the water flows into the water layer with too high sludge concentration, so that the sewage and activated sludge are mixed more fully and evenly;

[0063] Step 5: The treated sewage in the biochemical pool 8 is transported to the aeration pool 9 for treatment. After the treated sewage in the aeration pool 9 is precipitated in the secondary sedimentation tank, it is deeply treated by the filter tank, disinfection tank and other treatment equipment in the tertiary treatment stage.

[0064] The working principle and use method of the device are as follows: the whole device is installed inside the treatment pool of the sewage biochemical treatment stage, and the driving motor 12 drives the driving gear 15 to rotate, thereby driving the driven gear 16 to rotate, and then driving the two No. 1 connecting shafts 17 to rotate, and the two No. 1 connecting shafts 17 are rotated at the same time through the mutual meshing between the driving gear 15 and the two driven gears 16, and then the No. 1 pulley 24, the transmission belt 26 and the No. 2 pulley 25 drive the driving shaft 31 and the stirring paddle blades 32 to rotate, and at this time, the two sets of stirring paddle blades 32 also start to rotate simultaneously to stir and mix the sewage and the activated sludge;

[0065] When the amount of sewage generated by the fertilizer processing plant is large and the water quality is poor, when the two variable propeller mechanisms 3 do not sufficiently stir the sewage and the activated sludge, the driving component drives the transmission rubber wheel 217 to fit with the active rubber wheel 28 and the driven rubber wheel 210, so that the active rubber wheel 28 drives the driven rubber wheel 210 to rotate, and then drives the second connecting shaft 18 and the auxiliary stirring paddle 211 to rotate. When the amount of sewage generated by the fertilizer processing plant is small and the water quality is relatively good, the driving component drives the transmission rubber wheel 217 to separate from the surface of the active rubber wheel 28;

[0066] When the hydraulic telescopic rod 212 pushes the movable plate 213 to slide along the connection box 22, the guide groove 219 limits the guide plate 218, thereby improving the stability of the movement of the movable plate 213, thereby improving the stability of the transmission rubber wheel 217 during horizontal movement and rotation, and the plate-type pressure sensor 214 monitors the pressure on the transmission rubber wheel 217 in the horizontal direction;

[0067] In the process of the driving mechanism 1 driving the transmission mechanism 2 to drive the variable propeller mechanism 3 to stir and mix the sewage, the thin film pressure sensor on the surface of the stirring blade 32 monitors the pressure on its surface, the water flow velocity sensor monitors the flow velocity of the sewage, and the sludge concentration sensor monitors the flow pressure, flow velocity and concentration of sludge in the sewage respectively.

[0068] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A biochemical treatment device for fertilizer processing wastewater, comprising a biochemical pool (8), a sedimentation pool is provided on one side of the biochemical pool (8), and an aeration pool (9) is provided on the other side of the biochemical pool (8), a sewage lifting pump is installed between the sedimentation pool and the biochemical pool (8) and between the biochemical pool (8) and the aeration pool (9), the sewage lifting pump is used to transport the sewage treated in the sedimentation pool to the inside of the biochemical pool (8), and transport the sewage treated in the biochemical pool (8) to the inside of the aeration pool (9), the biochemical pool (8) is used to provide a space for mixing sewage and activated sludge and performing biological reactions, the aeration pool (9) is used to provide an aeration space for the sewage and activated sludge, an aerator is installed on the upper part of the aeration pool (9), and an aeration pipe is installed inside the aeration pool (9), the aerator and the aeration pipe are used to aerate the sewage and activated sludge inside the aeration pool (9), and the characteristics are: A biochemical treatment mixing device is installed inside the biochemical pool (8), and the biochemical treatment mixing device comprises a driving mechanism (1), the front end of the driving mechanism (1) is fixedly connected to a transmission mechanism (2), the front end of the transmission mechanism (2) is fixedly connected to a variable propeller mechanism (3), the driving mechanism (1) is used to provide power for the variable propeller mechanism (3) to perform a stirring operation, the transmission mechanism (2) is used to transmit the power generated by the driving mechanism (1) to the variable propeller mechanism (3), and an auxiliary stirring paddle (211) is installed at the end of the transmission mechanism (2), the transmission mechanism (2) is used to control the start or stop of the auxiliary stirring paddle (211), and the variable propeller mechanism (3) and the auxiliary stirring paddle (211) are used to mix and stir the activated sludge and sewage; The driving mechanism (1) comprises a power distribution box (13), a No. 2 connecting shaft (18) and a mounting base (11); the power distribution box (13) is fixedly connected to a mounting frame (14) inside; the mounting frame (14) is rotatably connected to two No. 1 connecting shafts (17) on the upper part; a No. 1 limiting roller (27) is fixedly connected to the surface of one of the No. 1 connecting shafts (17); the No. 2 connecting shaft (18) is located below the No. 1 connecting shaft (17) and is rotatably connected to the mounting frame (14). The upper part of the mounting base (11) is fixedly connected to a power distribution box (13), a driving motor (12) is installed on one side of the power distribution box (13), one end of the two No. 1 connecting shafts (17) are respectively fixedly connected to a driven gear (16), and the other end of the two No. 1 connecting shafts (17) is fixedly connected to a No. 1 pulley (24), the output end of the driving motor (12) is fixedly connected to a driving gear (15), and the driving gear (15) is meshed with the driven gear (16); The transmission mechanism (2) comprises a transmission box (21), a connection box (22), a transmission rubber wheel (217), a first limiting roller (27) and a second limiting roller (29); the transmission box (21) is fixedly connected to the side of the power distribution box (13), and the transmission box (21) is rotatably connected to the first connecting shaft (17) and the second connecting shaft (18) respectively; the connection box (22) is fixedly connected to the side of the transmission box (21), and a pushing component is installed inside the connection box (22); the pushing component is used to adjust the position of the transmission rubber wheel (217); the surface of the first limiting roller (27) is fixedly connected to the driving rubber wheel (28), and the surface of the second limiting roller (29) is fixedly connected to the driven rubber wheel (210); the transmission rubber wheel (217) is simultaneously in contact with the surfaces of the driving rubber wheel (28) and the driven rubber wheel (210); the front end of the second connecting shaft (18) is fixedly connected to the auxiliary stirring paddle (211); The pushing assembly comprises a hydraulic telescopic rod (212), the hydraulic telescopic rod (212) is fixedly connected to the inside of the connection box (22), and the end of the hydraulic telescopic rod (212) is fixedly connected to a moving plate (213), a second connecting frame (215) is installed on the side of the moving plate (213), a plate-type pressure sensor (214) is installed between the moving plate (213) and the second connecting frame (215), a third connecting shaft (216) is rotatably connected to the surface of the second connecting frame (215), and the third connecting shaft (216) is fixedly connected to a transmission rubber wheel (217), the active rubber wheel (28), the driven rubber wheel (210) and the transmission rubber wheel (217) are all polyurethane rubber wheels, the friction coefficient between the transmission rubber wheel (217) and the active rubber wheel (28) is 0.6-0.7, and the friction coefficient between the transmission rubber wheel (217) and the driven rubber wheel (210) is 0.6-0.7; A first connecting frame (23) is fixedly connected to the upper part of the transmission box (21), and two variable propeller mechanisms (3) are installed at the lower end of the first connecting frame (23). The variable propeller mechanism (3) comprises a driving shaft (31), and the driving shaft (31) is rotatably connected to the first connecting frame (23). One end of the driving shaft (31) is fixedly connected to a second pulley (25), and the other end of the driving shaft (31) is fixedly connected to an angle adjustment frame (33). A transmission belt (26) is movably connected to the surface of the second pulley (25), and the transmission belt (26) is movably connected to the first pulley (24). A stirring blade (32) is rotatably connected to the surface of the angle adjustment frame (33); A guide plate (6) is installed at the front end of the variable propeller mechanism (3), and the guide plate (6) is used to guide the water flow generated by the variable propeller mechanism (3) during the stirring process. Angle adjustment components (5) are installed at both ends of the guide plate (6). The upper part of the angle adjustment component (5) is fixedly connected to a telescopic mechanism (7), and the telescopic mechanism (7) is used to drive the angle adjustment component (5) to adjust the angle of the guide plate (6). The angle adjustment component (5) includes a plurality of fixed shells (51), and the plurality of fixed shells (51) are rotatably connected to an adjustment gear (52) inside, and the adjustment gear (52) is slidably connected to a rack (53) inside, and the racks (53) are spaced apart from each other. The two guide plates (6) are fixed to each other through a connecting rod (54), the connecting rod (54) is slidably connected to the fixed housing (51), both ends of the guide plate (6) pass through the fixed housing (51) and are fixedly connected to the adjusting gear (52), the bottom of the angle adjustment assembly (5) is fixedly connected to a fixing plate (4), the telescopic mechanism (7) comprises a fixing frame (71), the fixing frame (71) is fixedly connected to the upper part of the transmission box (21), and the lower part of the fixing frame (71) is fixedly connected to an electro-hydraulic push rod (72), the lower part of the electro-hydraulic push rod (72) is fixedly connected to a connecting plate (73), the lower part of the connecting plate (73) is fixedly connected to a push rod (74), and the push rod (74) is fixedly connected to the uppermost rack (53).

2. The biochemical treatment equipment for fertilizer processing wastewater according to claim 1 is characterized in that: A guide groove (219) is provided inside the connection box (22), a guide plate (218) is fixedly connected to the surface of the movable plate (213), and the guide plate (218) is located inside the guide groove (219) and is slidably connected to the connection box (22).

3. A biochemical treatment equipment for fertilizer processing wastewater according to claim 2, characterized in that: An electric cylinder (34) is arranged at the rear end of the driving shaft (31), and the electric cylinder (34) is fixedly connected to the side of the first connecting frame (23). The angle adjustment frame (33) is composed of a rotating base and a connecting rod assembly. A rotating shaft is arranged on the surface of the rotating base. The stirring paddle blade (32) is fixedly connected to the rotating shaft. The electric cylinder (34) is used to drive the connecting rod assembly to drive the rotating shaft to rotate.

4. The biochemical treatment equipment for fertilizer processing wastewater according to claim 3 is characterized by: A water flow velocity sensor is installed between the guide plate (6) and the variable propeller mechanism (3), a thin film pressure sensor is installed on the surface of the stirring blade (32), a position sensor is installed at the end of the guide plate (6), and a sludge concentration sensor is installed in front of the variable propeller mechanism (3).

5. A method for using a biochemical treatment device for fertilizer processing wastewater, characterized in that: A biochemical treatment device for fertilizer processing wastewater according to any one of claims 1 to 4 is used, comprising the following steps: S1, first use a filtering device to filter the floating matter in the sewage, then transport the sewage to a mixing tank for drug treatment, then separate it through a sedimentation tank, and then transport the sewage to a biochemical tank (8) for biochemical treatment; S2. The biochemical treatment mixing device is installed inside the biochemical pool (8) of the sewage biochemical treatment stage, and the two No. 1 connecting shafts (17) are driven to rotate by the driving motor (12), thereby driving the two driving shafts (31) to rotate through the transmission mechanism (2), and then the driving shaft (31) drives the stirring blade (32) to rotate, so as to stir the sewage and the activated sludge and promote the flow of the sewage; S3. According to the amount and quality of the sewage, when the two variable propeller mechanisms (3) do not stir it sufficiently, the driving component drives the transmission rubber wheel (217) to fit with the active rubber wheel (28) and the driven rubber wheel (210) at the same time, so that the active rubber wheel (28) drives the driven rubber wheel (210) to rotate, thereby driving the second connecting shaft (18) and the auxiliary stirring paddle (211) to rotate, and the sewage is fully stirred by the auxiliary stirring paddle (211); S4, according to the sewage concentration data at different depths in the treatment tank fed back by the sewage concentration sensor, the angle adjustment component (5) is driven to move through the telescopic mechanism (7), and then the angle of the guide plate (6) is adjusted, so that the water flows into the water layer with too high sludge concentration, so that the sewage and the activated sludge are mixed more fully and evenly; S5. The treated sewage in the biochemical tank (8) is transported to the aeration tank (9) for treatment. After the treated sewage in the aeration tank (9) is precipitated in the secondary sedimentation tank, it is further treated in depth by the treatment equipment such as the filter tank and the disinfection tank in the tertiary treatment stage.

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