A device for treating acrylonitrile wastewater

Abstract

The present application relates to sewage treatment technical field, specifically to a kind of acrylonitrile sewage treatment device, comprising: microbial purification tank, exhaust mechanism, the exhaust mechanism has two and symmetrically set in the two sides of the inner wall of microbial purification tank width direction, the exhaust mechanism includes the cavity plate fixedly connected in the inner wall of microbial purification tank. By cavity plate, partition block and air separation assembly in exhaust mechanism, air can be injected and extracted into microbial purification tank, so as to provide corresponding purification environment for aerobic microorganism or anaerobic microorganism to purify sewage, and then realize that when injecting air, air exposure area and immersion area can inject air into microbial purification tank simultaneously to provide sufficient oxygen for aerobic microorganism to purify sewage, help its efficient decomposition of pollutants in sewage, while when extracting air, air separation assembly disconnects the communication of air exposure area and immersion area, so that suction airflow is only discharged from air exposure area, avoid sewage from flowing out with cavity plate, while avoiding suction airflow from immersion area to interfere with anaerobic environment in tank.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and specifically to an acrylonitrile wastewater treatment device. Background Technology

[0002] Acrylonitrile wastewater treatment equipment is a device for treating wastewater containing acrylonitrile, acetonitrile, hydrogen cyanide, and other toxic and harmful substances generated during acrylonitrile production. It generally consists of a pretreatment unit with equalization tank, flotation device, and hydrolysis acidification tank; a microbial treatment unit with aerobic and anaerobic treatment devices; and a deep treatment unit with coagulation sedimentation, filtration, and advanced oxidation devices. Through the synergistic effect of each unit, it achieves functions such as regulating the quality and quantity of wastewater, solid-liquid separation, improving biodegradability, degrading organic matter, denitrification, and deep removal of residual pollutants, so as to purify water quality, protect the environment, recover resources, and ensure the sustainability of acrylonitrile production.

[0003] In existing acrylonitrile wastewater treatment devices, the choice of aerobic microbial purification, anaerobic microbial purification, or a combination of both in the microbial treatment unit is mainly based on the degree of pollution in the acrylonitrile wastewater. When the concentration of organic matter in the acrylonitrile wastewater is low, the ammonia nitrogen concentration is high, and the toxic substances are few, aerobic microbial purification is selected. When the concentration of organic matter in the acrylonitrile wastewater is high, and the nitrate nitrogen and toxic substances are many, anaerobic microbial purification is selected. When the wastewater has a high concentration of organic matter and also contains high levels of ammonia nitrogen and nitrate nitrogen, aerobic microbial purification and anaerobic microbial purification are selected sequentially.

[0004] Because aerobic and anaerobic microorganisms purify wastewater in different environments, current technology involves setting up two separate wastewater treatment tanks for aerobic and anaerobic microorganisms, respectively. However, during wastewater purification, aerobic and anaerobic microorganisms are directly introduced into these tanks, resulting in:

[0005] First, when aerobic or anaerobic microorganisms are used alone to purify wastewater, the purified water will contain these microorganisms. This can lead to secondary pollution of the natural environment when the purified water is discharged into it.

[0006] Second: When aerobic or anaerobic microorganisms are needed to purify wastewater, since aerobic or anaerobic microorganisms are in two separate environments, it is necessary to switch between the two environments. Furthermore, aerobic or anaerobic microorganisms are directly introduced into the corresponding wastewater. When the wastewater purified in the aerobic tank is transferred to the anaerobic tank for purification, the wastewater contains aerobic microorganisms. When aerobic microorganisms enter the anaerobic environment, their activity decreases or they die because they cannot adapt to the anaerobic conditions. This also disrupts the original microbial community structure in the anaerobic tank, resulting in a reduction in the purification effect of anaerobic microorganisms. Summary of the Invention

[0007] To address the aforementioned shortcomings of existing technologies, this invention provides an acrylonitrile wastewater treatment device that effectively solves the problem of switching between two environments when aerobic and anaerobic microorganisms are needed to treat pollutants in wastewater.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] This invention provides an acrylonitrile wastewater treatment device, comprising:

[0010] Microbial purification box

[0011] The suction mechanism has two suction mechanisms that are symmetrically arranged on the inner walls of both sides in the width direction of the microbial purification box. The suction mechanism includes a cavity plate that is fixedly connected to the inner wall of the microbial purification box. A partition block is arranged at the upper position inside the cavity plate. Multiple air-blocking components are arranged in a linear array inside the partition block. The partition block divides the cavity plate into an exposed area and a water-immersed area.

[0012] A microbial storage mechanism, comprising an aerobic component and an anaerobic component symmetrically arranged on both sides of the length of a microbial purification chamber, wherein a microbial attachment component is provided inside both the aerobic component and the anaerobic component.

[0013] Nutrient solution storage mechanism, wherein there are two nutrient solution storage mechanisms and they are respectively disposed on the upper end face of the aerobic component and the anaerobic component.

[0014] Preferably, a dual-purpose exhaust and suction fan is fixedly connected to the upper surface of the microbial purification box, and the dual-purpose exhaust and suction fan is electrically connected to a controller. Two air pipes are symmetrically and fixedly connected to the output end of the dual-purpose exhaust and suction fan. A one-way valve is fixedly connected to the upper surface of the microbial purification box. Solenoid valves are provided on both sides of the width direction of the microbial purification box. The solenoid valves are electrically connected to the controller. A perforated box is fixedly connected to the inner bottom of the microbial purification box. The output ends of the solenoid valves on both sides are connected to the microbial purification box and the perforated box through pipes. A slide is fixedly connected to the upper surface of the perforated box in the width direction, and the two ends of the slide extend into the aerobic component and the anaerobic component, respectively. A connecting port is opened on both sides in the length direction of the microbial purification box.

[0015] The technical solution provided by this invention has the following advantages compared with the known prior art:

[0016] 1. Through the hollow plate, partition blocks, and air-sealing components in the suction and exhaust mechanism, air can be injected into and drawn into the microbial purification tank, thus providing a corresponding purification environment for aerobic or anaerobic microorganisms to purify wastewater. The hollow plate, through the partition blocks and air-sealing components, forms an exposed area and a submerged area. The submerged area is located in the wastewater, while the exposed area is above the wastewater surface. The air-sealing components allow air to be injected into the microbial purification tank from both the exposed and submerged areas, and when air is drawn from the tank, the air-sealing components close. The component isolates the open area from the immersion area, preventing the immersion area from venting suction airflow. This allows the suction airflow to exit only from the open area, enabling both the open and immersion areas to simultaneously inject air into the microbial purification chamber during air injection. This provides sufficient oxygen for the aerobic microorganisms to efficiently decompose pollutants in the wastewater. Conversely, during air extraction, the air-sealing component isolates the open and immersion areas, ensuring that the suction airflow exits only from the open area. This prevents wastewater from flowing out with the cavity plate and also prevents the suction airflow from the immersion area from interfering with the anaerobic environment inside the chamber.

[0017] 2. The microbial storage mechanism, comprising aerobic, anaerobic, and microbial attachment components, allows for the precise control of the number and location of aerobic or anaerobic microorganisms introduced into the wastewater. This enables the introduction of appropriate aerobic or anaerobic microorganisms based on the degree of wastewater pollution. The aerobic and anaerobic components can be used alternately or individually depending on the type of wastewater pollutant, allowing for different purification methods to be applied based on the pollutant type, thus avoiding resource waste. When the microbial attachment components are stored within the aerobic and anaerobic components, these components provide a suitable environment for the corresponding aerobic or anaerobic microorganisms, promoting their reproduction and maintaining their optimal physiological state and efficient metabolic activity. This, in turn, accelerates the decomposition and transformation of pollutants in the wastewater. Furthermore, the sufficient number and active microorganisms make the wastewater purification process more continuous and efficient, reducing purification time.

[0018] 3. The nutrient solution storage mechanism, including the nutrient solution tank and nutrient bottle, provides the necessary nutrients for the growth and reproduction of aerobic and anaerobic microorganisms in the aerobic and anaerobic components. This further promotes the reproduction of aerobic and anaerobic microorganisms, allowing their numbers to increase rapidly. This effectively improves the decomposition and transformation capacity of pollutants in wastewater, thereby enhancing wastewater purification efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall side structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the microbial purification box of the present invention;

[0023] Figure 4 This is a schematic diagram of the overall structure of the microbial purification box of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the suction and exhaust mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the separator block of the present invention;

[0026] Figure 7 This is a schematic diagram of the air-barrier component of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the aerobic storage box of the present invention;

[0028] Figure 9 This is a schematic diagram of the bottom structure of the microbial storage mechanism of the present invention;

[0029] Figure 10 This is a schematic diagram of the internal structure of the aerobic storage tank of the present invention;

[0030] Figure 11 This is a schematic diagram of the structure of the microbial attachment component of the present invention;

[0031] Figure 12 This is a schematic diagram of the anaerobic storage box of the present invention;

[0032] Figure 13 This is a schematic diagram of the internal structure of the anaerobic component of the present invention.

[0033] Figure reference numerals: 1. Microbial purification box; 11. Solenoid valve; 12. Dual-purpose exhaust and suction fan; 13. Air pipe; 14. Perforated box; 15. Slide rail; 16. Lifter; 17. Gate; 18. Microbial sensor; 19. Two-position three-way valve; 110. Drainage block; 2. Exhaust and suction mechanism; 21. Cavity plate; 22. Diverter pipe; 23. First air vent; 24. Separator block; 241. Connecting hole; 242. Cross-shaped fixing rod; 243. Elastic rope; 25. Second air vent; 26. Air-sealing component; 261. Ventilation box; 262. Exhaust port; 263. Check valve; 264. Fixing rod; 265. Gas-gathering hood; 3. Microbial storage mechanism; 31. Aerobic component; 311. Aerobic storage box; 312. 313. Suction fan; 314. Air outlet; 315. Air supply block; 316. Heating and supplemental lighting lamp; 317. First suction and discharge block; 32. First diversion block; 321. Connecting pipe; 33. First water pump; 331. First liquid guide pipe; 332. First infusion pipe; 34. Microbial attachment component; 341. Fixing frame; 342. Microbial attachment rack; 343. Electric slider; 344. Distance limiting seat; 35. Anaerobic component; 351. Anaerobic storage box; 352. Cooling rod; 353. Second suction and discharge block; 36. Second diversion block; 37. Second water pump; 371. Second liquid guide pipe; 372. Second infusion pipe; 4. Nutrient solution storage mechanism; 41. Nutrient solution tank; 42. Nutrient bottle; 43. Connecting pipe. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] The present invention will be further described below with reference to embodiments.

[0036] Example: Refer to Figures 1 to 13 An acrylonitrile wastewater treatment device, comprising:

[0037] Microbial purification box 1,

[0038] The suction mechanism 2 has two symmetrically arranged on the inner walls of both sides in the width direction of the microbial purification box 1. The suction mechanism 2 includes a cavity plate 21 fixedly connected to the inner wall of the microbial purification box 1. A partition block 24 is arranged at the upper position inside the cavity plate 21. Multiple air-blocking components 26 are arranged in a linear array inside the partition block 24. The partition block 24 divides the cavity plate 21 into an exposed area and a water-immersed area.

[0039] The microbial storage mechanism 3 includes an aerobic component 31 and an anaerobic component 35 symmetrically arranged on both sides of the length direction of the microbial purification box 1. Both the aerobic component 31 and the anaerobic component 35 are provided with microbial attachment components 34 inside.

[0040] Nutrient solution storage mechanism 4, there are two of them and they are respectively disposed on the upper end face of aerobic component 31 and anaerobic component 35.

[0041] The hollow plate 21 in the suction and exhaust mechanism 2 allows for the input and output of air into the microbial purification tank 1, thereby altering the internal environment of the microbial purification tank 1 to provide a corresponding purification environment for the subsequent purification of wastewater by aerobic and anaerobic microorganisms. The partition block 24 divides the hollow plate 21 into an open area and a submerged area. When air is input into the microbial purification tank 1, the open area and the submerged area can simultaneously discharge air to replenish oxygen to the microbial purification tank 1, thus providing an environment for aerobic microorganisms to purify wastewater. When the air-blocking component 26 absorbs air into the microbial purification tank 1, it blocks the connection between the open area and the submerged area, so that the suction airflow can only flow out from the open area. The microbial attachment component 34 located in the aerobic component 31 and the anaerobic component 35 is attached to the corresponding aerobic or anaerobic microorganisms, providing a corresponding environment for the survival and reproduction of aerobic or anaerobic microorganisms. The nutrient solution storage mechanism 4 can provide nutrients for aerobic or anaerobic microorganisms.

[0042] Reference Figures 1 to 4 The upper end of the microbial purification box 1 is fixedly connected to a dual-purpose exhaust and suction fan 12, which is electrically connected to a controller. The output end of the dual-purpose exhaust and suction fan 12 is symmetrically and fixedly connected to two air pipes 13. The upper end of the microbial purification box 1 is fixedly connected to a one-way valve. Solenoid valves 11 are provided on both sides of the width direction of the microbial purification box 1. The solenoid valves 11 are electrically connected to the controller. A perforated box 14 is fixedly connected to the bottom of the microbial purification box 1. The output ends of the solenoid valves 11 on both sides are connected to the microbial purification box 1 and the perforated box 14 through pipes. A slide 15 is fixedly connected to the width direction of the upper end of the perforated box 14, and the two ends of the slide 15 extend into the aerobic component 31 and the anaerobic component 35, respectively. The microbial purification box 1 has a connecting port on both sides of the length direction.

[0043] The forward and reverse rotation of the exhaust and suction fan 12 can supply air into or draw air from the cavity plate 21. The one-way valve closes when drawing air and opens when supplying air. The solenoid valves 11 on both sides are used to control the closing when the sewage is transported to the microbial purification box 1, so that the microbial purification box 1 is in a sealed environment when combined with sewage. The slide 15 facilitates the entry of the subsequent microbial attachment components into the microbial purification box 1.

[0044] Reference Figures 3 to 4 Lifters 16 are fixedly connected to both sides of the microbial purification box 1 and above the connecting port. Lifters 16 are electrically connected to the controller. A gate 17 is slidably connected inside the connecting port. The lifting end of the lifters 16 is fixedly connected to the gate 17. Microbial sensors 18 are fixedly connected to the inner wall of the microbial purification box 1. The microbial sensors 18 correspond to the positions of the partition blocks 24. Two-position three-way valves 19 are fixedly connected to both sides of the microbial purification box 1 and the lifters 16, and the two-position three-way valves 19 are electrically connected to the controller. Drainage blocks 110 are fixedly connected to both sides of the microbial purification box 1, and the drainage blocks 110 correspond to the two-position three-way valves 19. The output end of the two-position three-way valves 19 is connected to the drainage blocks 110 through a pipe passing through the microbial purification box 1.

[0045] The lifting device 16 can open the gate 17 corresponding to the aerobic component 31 or anaerobic component 35 according to the type of pollutants detected in the wastewater. This allows the aerobic component 31 or anaerobic component 35 to connect with the microbial purification tank 1 through the connecting port. This enables the aerobic and anaerobic microorganisms attached to the corresponding microbial attachment components in the aerobic component 31 or anaerobic component 35 to enter the microbial purification tank 1. The microbial sensor 18 is used to detect the types of impurities in the wastewater to determine whether aerobic microbial purification, anaerobic microbial purification, or sequential purification using aerobic and anaerobic microorganisms is required.

[0046] Reference Figure 2 , Figures 4 to 7 The cavity plate 21 has a rectangular array of multiple first air holes 23 and multiple second air holes 25 on the side away from the microbial purification box 1. The first air holes 23 and the second air holes 25 correspond to the positions of the exposed area and the immersion area, respectively. The upper end face of the cavity plate 21 is provided with a multi-inlet diversion pipe 22, and the multiple water outlets of the diversion pipe 22 are connected to the cavity plate 21. The water inlet of the diversion pipe 22 is connected to the end of the air pipe 13 away from the exhaust and suction fan 12.

[0047] Multiple connecting holes 241 are linearly arrayed within the partition block 24. A cross-shaped fixing rod 242 is fixedly connected to the inner wall of the connecting hole 241. The air-tight component 26 corresponds to the connecting hole 241 and is located below the cross-shaped fixing rod 242. An elastic rope 243 is fixedly connected to the center of the bottom of the cross-shaped fixing rod 242.

[0048] The air-tight assembly 26 includes a vent box 261 slidably connected to the inner wall of the connecting hole 241. Multiple exhaust holes 262 are provided in a rectangular array around the vent box 261. Each exhaust hole 262 is equipped with a check valve 263. The lower end of the elastic rope 243 is fixedly connected to the bottom of the vent box 261. Multiple fixing rods 264 are fixedly connected to the bottom of the vent box 261 with the elastic rope 243 as the center. The rods of the fixing rods 264 are linearly arrayed and fixedly connected to an air-gathering hood 265, and the opening of the air-gathering hood 265 is set facing upward.

[0049] The cross-shaped fixing rod 242 and the elastic rope 243 in the partition block 24 provide tension for the air-tight assembly 26, so that the air-tight assembly 26 can return to its initial position when the airflow disappears. When the exhaust and suction fan 12 delivers air into the cavity plate 21, the air-gathering hood 265 and the ventilation box 261 block the air and push the ventilation box 261 down. Because the elastic rope 243 provides tension, as the airflow increases, the elastic rope 243 extends, and more of the exhaust port 262 is exposed through the connecting hole 241, so more air is delivered to the immersion area.

[0050] Reference Figures 8 to 10 The aerobic component 31 includes an aerobic storage box 311 fixedly connected to the side of the microbial purification box 1. The aerobic storage box 311 is connected to a communication port on one side of the microbial purification box 1. The slide 15 extends to the aerobic component 31 and is fixedly connected to its inner bottom. An air intake fan 312 is fixedly connected to the other side of the aerobic storage box 311. The air intake fan 312 is electrically connected to the controller. Multiple air outlets 313 are rectangularly arrayed at the edge of the upper surface of the aerobic storage box 311. An air supply block 314 corresponding to the air intake fan 312 is fixedly connected to the inner wall of the aerobic storage box 311. The air intake fan 312 is connected to the air supply block 314 through a pipe. A heating supplement lamp 315 is symmetrically fixedly connected to the inner wall of the aerobic storage box 311 with the air supply block 314 as the center. A first suction and exhaust block 316 is fixedly connected to the inner bottom of the aerobic storage box 311.

[0051] The aerobic storage box 311 in the aerobic component 31 can store the corresponding microbial attachment component 34, and the aerobic storage box 311 stores liquid that is conducive to the growth of aerobic microorganisms. The exhaust fan 312 can provide oxygen to the aerobic microorganisms attached to the microbial attachment component 34 when the microbial attachment component 34 is stored in the aerobic storage box 311. The air outlet 313 is used to realize the circulation of air in the aerobic storage box 311.

[0052] Reference Figures 9 to 10The bottom of the aerobic storage tank 311 is fixedly connected to a first diverter block 32. The two output ends of the first diverter block 32 are connected to a connecting pipe 321. The other end of the connecting pipe 321 passes through the aerobic storage tank 311 and is connected to the first suction and discharge block 316. The side of the aerobic storage tank 311 is fixedly connected to a first water pump 33. The first water pump 33 is electrically connected to the controller. The output end of the first water pump 33 is fixedly connected to a first liquid guide pipe 331. The first liquid guide pipe 331 is connected to one of the input ends of a two-position three-way valve 19 located on one side of the aerobic storage tank 311. The input end of the first water pump 33 is fixedly connected to a first delivery pipe 332. The other end of the first delivery pipe 332 is connected to one of the input ends of the first diverter block 32.

[0053] Before the elevator 16 opens the gate 17 connecting the microbial purification tank 1, the first water pump 33 can transport the liquid stored in the aerobic storage tank 311 to the nutrient solution storage mechanism 4 on the upper surface of the aerobic storage tank 311 to prevent the sewage from mixing with the liquid stored in the aerobic storage tank 311 when the gate 17 is opened. When the microbial attachment component 34 of the aerobic component 31 returns to the aerobic storage tank 311, the elevator 16 controls the gate 17 to close. At this time, the first water pump 33 will discharge the sewage stored in the aerobic storage tank 311 back into the microbial purification tank 1 through the drain block 110.

[0054] Reference Figures 12 to 13 The anaerobic component 35 includes an anaerobic storage box 351 fixedly connected to the side of the microbial purification box 1. The anaerobic storage box 351 is connected to the communication port on the other side of the microbial purification box 1. The portion of the slide 15 extending to the anaerobic component 35 is fixedly connected to its inner bottom. At least one cooling rod 352 is fixedly connected to the side of the anaerobic component 35. At least one second suction block 353 is fixedly connected to the inner bottom of the anaerobic component 35. A second diversion block 36 is fixedly connected to the bottom of the anaerobic component 35. The output end of the second diversion block 36 is connected to the second diversion block 36. A second water pump 37 is fixedly connected to the side of the anaerobic storage box 351. The output end of the second water pump 37 is fixedly connected to a second liquid guide pipe 371. The input end of the second water pump 37 is fixedly connected to a second liquid delivery pipe 372. The other end of the second liquid delivery pipe 372 is connected to the input end of the second diversion block 36.

[0055] The anaerobic storage box 351 in the anaerobic component 35 provides an anaerobic environment for anaerobic microorganisms, and the second water pump 37 has the same function as the first water pump 33.

[0056] Reference Figures 11 to 12The microbial attachment component 34 includes multiple electric sliders 343 slidably connected in the slide rail 15 and electrically connected to the controller. A fixed frame 341 is fixedly connected to the top of the electric slider 343. A microbial attachment rack 342 is fixedly connected inside the fixed frame 341. Multiple distance limiting seats 344 are fixedly connected around the opposite sides of two adjacent fixed frames 341.

[0057] Two microbial attachment components 34 are placed in the aerobic component 31 and the anaerobic component 35 respectively, and aerobic and anaerobic microorganisms are attached thereto. The distance limiting seat 344 restricts the distance between two adjacent fixed frames 341 to increase the living and reproduction space of aerobic or anaerobic microorganisms attached in the microbial attachment rack 342. The electric slider 343 slides into the microbial purification box 1 through the slide 15 according to the degree of pollution of the sewage.

[0058] Reference Figure 8 , Figure 12 , Figure 13 The nutrient solution storage mechanism 4 includes a nutrient solution tank 41 that is fixedly connected to the upper surfaces of the aerobic storage tank 311 and the anaerobic storage tank 351 respectively. A nutrient bottle 42 is snapped onto the upper surface of the nutrient solution tank 41. A connecting pipe 43 is fixedly connected to the side of the nutrient solution tank 41. The other side of the connecting pipe 43 is connected to the input end of the two-position three-way valve 19.

[0059] The nutrient solution tank 41 can be used to store the original liquid in the aerobic storage tank 311 or the anaerobic storage tank 351 when connected to the microbial purification tank 1. The nutrient solution tank 41 is equipped with a growth factor level detector (the growth factor level detector is existing technology, so it is not shown in the figure) to detect the amount of growth factors in the liquid and to replenish the missing growth factors in the liquid through the nutrient bottle 42.

[0060] The specific operating principle of this embodiment is as follows:

[0061] Step 1: Two solenoid valves 11 are connected to the previous and next stages of wastewater treatment, respectively. When wastewater enters the microbial purification tank 1 from the previous stage, the controller opens the solenoid valve 11 corresponding to the previous stage, allowing the wastewater to enter the microbial purification tank 1 through the porous box 14 connected to the solenoid valve 11 (at this time, the solenoid valve 11 connected to the next stage is closed). When the wastewater from the previous stage has completely entered the microbial purification tank 1, the controller closes both solenoid valves 11, and the microbial purification tank 1 is in a closed state. At this time, the microbial sensor 18 (microbial sensor 18 is existing technology) begins to detect the types of impurities in the wastewater and feeds the results back to the controller. The controller operates one of the two lifting devices 16 based on feedback information. For example, if the microbial sensor 18 indicates that the impurities in the wastewater only require aerobic microbial treatment, the lifting device 16 corresponding to the aerobic component 31 is activated, thereby opening the corresponding gate 17. If the microbial sensor 18 indicates that the impurities in the wastewater only require anaerobic microbial treatment, then the opposite is true (the lifting devices 16 on both sides cannot open the corresponding gate 17 simultaneously). If the microbial sensor 18 indicates that the impurities in the wastewater require both aerobic and anaerobic microbial treatment, the operator controls the two lifting devices 16 to open the gate 17 in sequence according to the actual situation.

[0062] Note that when the lift 16 corresponding to the aerobic component 31 opens the gate 17, it must wait until the microbial attachment component 34 inside the aerobic component 31 returns to the aerobic component 31. When the lift 16 corresponding to the aerobic component 35 closes the gate 17, the lift 16 corresponding to the anaerobic component 35 can open the gate 17. That is, the microbial purification box 1 will not be connected to both the aerobic component 31 and the anaerobic component 35 at the same time.

[0063] Specifically, based on feedback information from the microbial sensor 18, the environment inside the microbial purification chamber 1 will change accordingly, depending on whether aerobic or anaerobic microbial treatment is selected:

[0064] When aerobic microorganisms are needed to purify wastewater:

[0065] The controller starts the dual-purpose exhaust and suction fan 12 to rotate forward, causing it to deliver air into the cavity plate 21. The air enters the cavity plate 21 through the air pipe 13 and the diversion pipe 22. As the dual-purpose exhaust and suction fan 12 continuously delivers air into the cavity plate 21, the air pushes the ventilation box 261 down along the connecting hole 241. As the air pressure increases, the elastic rope 243 is stretched, and the exhaust hole 262 on the ventilation box 261 gradually protrudes from the connecting hole 241, thereby connecting the exposed area and the submerged area. The dual-purpose exhaust and suction fan 12... The greater the air intensity provided, the more of the exhaust vent 262 is exposed. Air from the exposed area passes through the first vent 23, and air from the submerged area passes through the second vent 25, simultaneously injecting air into the microbial purification chamber 1. This provides sufficient oxygen for the aerobic microorganisms, aiding in the decomposition of pollutants in the wastewater. After the aerobic microorganisms complete the wastewater purification, the exhaust and suction fan 12 is shut off, the air pressure disappears, and the stretched elastic rope 243, under the action of its rebound force, returns the ventilation chamber 261 to the initial position of the connecting hole 241. When anaerobic microbial purification of wastewater is required:

[0066] The dual-purpose exhaust and suction fan 12 reverses to draw air from the cavity plate 21. During this process, the ventilation box 261 moves upward under the tension of the elastic rope 243, the exhaust port 262 gradually closes, and the check valve 263 prevents the gas from escaping from the immersion area. The suction airflow can only be discharged from the exposed area through the first air hole 23, preventing sewage from flowing out with the cavity plate 21 and preventing the suction airflow discharged from the immersion area from interfering with the anaerobic environment inside the box.

[0067] When anaerobic and aerobic microorganisms are needed to purify wastewater, the operation of anaerobic and aerobic microorganisms purifying wastewater will be repeated (according to the order in which anaerobic and aerobic microorganisms are used, and this order is determined by the types of pollutants in the wastewater; if the pollutants to be purified by aerobic microorganisms account for a larger proportion in the wastewater, then aerobic microorganisms will purify the wastewater first, and vice versa). The above operations will be performed in sequence.

[0068] The immersion zone is located in the sewage, and the open zone is located above the sewage surface. Therefore, a water level detector (which is existing technology and is not shown in the figure) is installed in the microbial purification box 1 to ensure that the open zone is above the sewage surface.

[0069] It should be noted that:

[0070] 1. When the dual-purpose exhaust and suction fan 12 supplies air into the cavity plate 21, the check valve 263 is in the open state, allowing the air in the ventilation box 261 to be discharged through the exhaust hole 262, so that the air in the open area and the immersion area enters the microbial purification box 1 through the first air hole 23 and the second air hole 25 respectively to provide oxygen for aerobic microorganisms; when the dual-purpose exhaust and suction fan 12 reverses to suck air, the check valve 263 cannot pass through the exhaust hole 262, thus blocking the exhaust hole 262, blocking the gas discharge from the immersion area, ensuring that the suction airflow is only discharged from the first air hole 23 in the open area, avoiding sewage outflow and the airflow in the immersion area interfering with the anaerobic environment.

[0071] 2. When the dual-purpose exhaust and suction fan 12 supplies air to the microbial purification chamber 1, the air output by the dual-purpose exhaust and suction fan 12 causes the air pressure in the air pipe 13 to be higher than the air pressure in the microbial purification chamber 1. Under this pressure difference, the valve core of the one-way valve is pushed open, and the one-way valve opens, allowing air to smoothly enter the microbial purification chamber 1. This increases the oxygen content in the wastewater and the microbial purification chamber 1 while preventing excessive pressure inside the microbial purification chamber 1. When the dual-purpose exhaust and suction fan 12 draws air, the pressure inside the air pipe 13 is lower than the pressure inside the microbial purification chamber 1. At this time, the air inside the microbial purification chamber 1 tends to flow towards the air pipe 13, but the valve core of the one-way valve is tightly fitted to the valve seat under the pressure difference and its own structure, and the one-way valve closes, preventing the backflow of air inside the microbial purification chamber 1 and avoiding affecting the treatment environment inside the chamber.

[0072] 3. When the exhaust and suction fan 12 is in reverse, it does not work continuously. Instead, it only draws in air that will not cause negative pressure in the microbial purification chamber 1. Since the microbial purification chamber 1 is equipped with a pressure detector (the pressure detector is existing technology and is not shown in the figure), when negative pressure occurs in the microbial purification chamber 1, the pressure detector feeds back information to the controller. At this time, the controller will stop the exhaust and suction fan 12 from working. However, the exhaust and suction fan 12 works continuously when rotating forward.

[0073] Step Two:

[0074] Storage state of aerobic microorganisms when unused:

[0075] The aerobic storage box 311 in the aerobic component 31 is used to store the microbial attachment component 34 (where the microbial attachment rack 342 in the microbial attachment component 34 is attached to aerobic microorganisms). The aerobic storage box 311 stores liquid that is conducive to the growth of aerobic microorganisms. The suction fan 312 is electrically connected to the controller. After starting, it draws air from the air supply block 314 through the pipe to provide oxygen to the aerobic microorganisms attached to the microbial attachment component 34. The air outlet 313 on the upper surface of the aerobic storage box 311 realizes the air circulation inside the box. The heating supplement lamp 315 (the heating supplement lamp 315 is a heating supplement lamp 315 that can be used by immersion in water) provides a suitable temperature and light environment for aerobic microorganisms, promoting their growth and reproduction.

[0076] The state of aerobic microorganisms during use:

[0077] When wastewater requires aerobic microbial treatment, the lift 16 opens the gate 17 connected to the aerobic storage tank 311 based on the detection results of impurities in the wastewater by the microbial sensor 18. The microbial attachment component 34, driven by the electric slider 343, enters the microbial purification tank 1 along the slide 15. The aerobic microorganisms begin to decompose the pollutants in the wastewater. The controller can control the corresponding number of electric sliders 343 to drive the microbial attachment frame 342 into the microbial purification tank 1 based on the pollutant information in the wastewater fed back by the microbial sensor 18. The aerobic microorganisms begin to decompose the pollutants in the wastewater. When the corresponding number of electric sliders 343 drive the microbial attachment frame 342 with aerobic microorganisms into the microbial purification tank 1, the lift 16 will close the gate 17, thereby disconnecting the aerobic storage tank 311 from the microbial purification tank 1 again (at this time, since the microbial attachment frame 342 has not all returned to the aerobic storage tank 311, the lift 16 corresponding to the anaerobic component 35 will not work).

[0078] Before the lift 16 corresponding to the aerobic component 31 receives the controller command to open the gate 17, in order to prevent the liquid stored in the aerobic storage tank 311, which is conducive to the growth of aerobic microorganisms, from mixing with the sewage entering the microbial purification tank 1, thus affecting the sewage treatment effect and the microbial living environment, the system will first start the first water pump 33. Its input end is connected to the first diversion block 32 at the bottom of the aerobic storage tank 311 through the first liquid delivery pipe 332, which draws out the liquid from the aerobic storage tank 311. The liquid flows into the first water pump 33 through the first liquid delivery pipe 332 and then out from its output end through the first liquid guide pipe 331. The first liquid guide pipe 331 is connected to one of the input ends of the two-position three-way valve 19 located on one side of the aerobic storage tank 311. Under the control of the controller, the two-position three-way valve 19 switches to the corresponding passage, so that the liquid flows smoothly into the nutrient solution tank 41 for storage.

[0079] The microbial attachment rack 342 completes the purification of the sewage. When it returns to the aerobic storage tank 311 along the slide 15 under the drive of the electric slider 343, the lift 16 controls the gate 17 to close according to the controller command. At this time, the aerobic storage tank 311 has been mixed with the sewage that has participated in the purification and needs to be discharged. The first water pump 33 starts again, but this time its working direction is reversed. The sewage in the aerobic storage tank 311 is first collected by the first suction and discharge block 316, and then flows into the first diversion block 32 through the connecting pipe 321. The first water pump 33 draws the sewage out of the first diversion block 32 through the first delivery pipe 332 and outputs it through the first guide pipe 331. Under the control of the controller, the two-position three-way valve 19 switches the passage again, so that the sewage enters the drain block 110 through the connecting pipe and is finally discharged back into the microbial purification tank 1.

[0080] Storage state of anaerobic module 35 when not in use:

[0081] The anaerobic storage box 351 in the anaerobic assembly 35 provides an anaerobic environment for anaerobic microorganisms. A cooling rod 352 is installed on the side of the anaerobic storage box 351 to maintain the low-temperature anaerobic conditions inside the box.

[0082] The state of anaerobic microorganisms during use is consistent with the process of aerobic microorganisms during use, therefore the state of aerobic microorganisms during use should be referenced.

[0083] When the microbial sensor 18 detects that the microbial treatment has been completed, the controller controls both solenoid valves 11 to open completely, thereby allowing the wastewater to enter the next process (the next process is equipped with a wastewater pump by default).

[0084] Step 3: The nutrient solution tank 41 of the nutrient solution storage mechanism 4 is fixed to the upper end face of the aerobic storage tank 311 and the anaerobic storage tank 351 respectively. The nutrient bottle 42 is snapped onto the upper end face of the nutrient solution tank 41. The nutrient solution tank 41 stores growth factors such as vitamins, amino acids, purines, and pyrimidines. The connecting pipe 43 on the side of the nutrient solution tank 41 is connected to the input end of the two-position three-way valve 19. When the aerobic or anaerobic storage tank is connected to the microbial purification tank 1, the nutrient solution tank 41 stores the original liquid inside. The growth factor level detector in the nutrient solution tank 41 detects the content of growth factors in the liquid in real time. When the growth factor is insufficient, the nutrient bottle 42 replenishes the missing growth factors to the nutrient solution tank 41, promotes the reproduction of aerobic and anaerobic microorganisms, and improves their ability to decompose and transform pollutants in wastewater.

[0085] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An acrylonitrile wastewater treatment device, characterized in that, include: A microbial purification box (1) has a perforated box (14) fixedly connected to its inner bottom. Lifters (16) are fixedly connected to both sides of the microbial purification box (1) and above the connecting port. The lifters (16) are electrically connected to the controller. A gate (17) is slidably connected inside the connecting port. The lifting end of the lifters (16) is fixedly connected to the gate (17). A microbial sensor (18) is fixedly connected to the inner wall of the microbial purification box (1). The suction mechanism (2) has two symmetrically arranged on the inner walls of the two sides in the width direction of the microbial purification box (1). The suction mechanism (2) includes a cavity plate (21) fixedly connected to the inner wall of the microbial purification box (1). A partition block (24) is arranged at the upper position inside the cavity plate (21). Multiple air-sealing components (26) are arranged in a linear array inside the partition block (24). The partition block (24) divides the cavity plate (21) into an open area and a water-immersed area. The microbial storage mechanism (3) includes an aerobic component (31) and an anaerobic component (35) symmetrically arranged on both sides of the length direction of the microbial purification box (1). Both the aerobic component (31) and the anaerobic component (35) are provided with microbial attachment components (34). Each microbial attachment component (34) includes multiple electric sliders (343) slidably connected in a slide rail (15) and electrically connected to a controller. A fixed frame (341) is fixedly connected to the top of the electric slider (343). A microbial attachment rack (342) is fixedly connected inside the fixed frame (341). Multiple distance limiting seats (344) are fixedly connected around the opposite sides of two adjacent fixed frames (341). The upper surface of the porous box (14) is fixedly connected to a slide (15) in the width direction, and the two ends of the slide (15) extend into the aerobic component (31) and the anaerobic component (35) respectively. The microbial purification box (1) has a communication port on both sides in the length direction. Nutrient solution storage mechanism (4), the nutrient solution storage mechanism (4) has two and is respectively disposed on the upper surface of the aerobic component (31) and the anaerobic component (35).

2. The acrylonitrile wastewater treatment device according to claim 1, characterized in that, The upper end of the microbial purification box (1) is fixedly connected to a dual-purpose exhaust and suction fan (12), and the dual-purpose exhaust and suction fan (12) is electrically connected to a controller. The output end of the dual-purpose exhaust and suction fan (12) is symmetrically and fixedly connected to two air pipes (13). The upper end of the microbial purification box (1) is fixedly connected to a one-way valve. Solenoid valves (11) are provided on both sides of the width direction of the microbial purification box (1). The solenoid valves (11) are electrically connected to the controller. The output ends of the solenoid valves (11) on both sides are connected to the two sides of the microbial purification box (1) and the porous box (14) through pipes.

3. The acrylonitrile wastewater treatment device according to claim 2, characterized in that, The microbial sensor (18) is positioned corresponding to the separator (24). The two sides of the microbial purification box (1) and the lift (16) are fixedly connected to a two-position three-way valve (19), and the two-position three-way valve (19) is electrically connected to the controller. The two sides of the microbial purification box (1) are fixedly connected to a drain block (110), and the drain block (110) corresponds to the two-position three-way valve (19). The output end of the two-position three-way valve (19) is connected to the drain block (110) through a pipe.

4. The acrylonitrile wastewater treatment device according to claim 1, characterized in that, The cavity plate (21) has a rectangular array of multiple first air holes (23) and multiple second air holes (25) on the side away from the microbial purification box (1). The first air holes (23) and the second air holes (25) correspond to the positions of the open area and the immersion area, respectively. The upper end face of the cavity plate (21) is provided with a multi-inlet diversion pipe (22), and multiple water outlets of the diversion pipe (22) are connected to the cavity plate (21). The water inlet of the diversion pipe (22) is connected to the end of the air pipe (13) away from the exhaust and suction fan (12). The partition block (24) has multiple connecting holes (241) arranged in a linear array. A cross-shaped fixing rod (242) is fixedly connected to the inner wall of the connecting hole (241). The air-sealing component (26) corresponds to the connecting hole (241) and is located below the cross-shaped fixing rod (242). An elastic rope (243) is fixedly connected to the center of the bottom of the cross-shaped fixing rod (242).

5. An acrylonitrile wastewater treatment device according to claim 4, characterized in that, The air-tight assembly (26) includes a vent box (261) slidably connected to the inner wall of the connecting hole (241). The vent box (261) has multiple exhaust holes (262) arranged in a rectangular array around its perimeter. Each exhaust hole (262) is equipped with a check valve (263). The lower end of the elastic rope (243) is fixedly connected to the bottom of the vent box (261). The bottom of the vent box (261) is fixedly connected with multiple fixing rods (264) centered on the elastic rope (243). The rods of the fixing rods (264) are linearly arranged and fixedly connected with an air-gathering hood (265), and the opening of the air-gathering hood (265) faces upward.

6. An acrylonitrile wastewater treatment device according to claim 2, characterized in that, The aerobic component (31) includes an aerobic storage tank (311) fixedly connected to the side of the microbial purification box (1). The aerobic storage tank (311) is connected to a communication port on one side of the microbial purification box (1). The portion of the slide (15) extending into the aerobic component (31) is fixedly connected to its inner bottom. An air intake fan (312) is fixedly connected to the other side of the aerobic storage tank (311). The air intake fan (312) is electrically connected to a controller. The upper surface of the aerobic storage tank (311) The rectangular array at the edge position has multiple air outlets (313). The inner wall of the aerobic storage box (311) is fixedly connected to an air supply block (314) corresponding to the air intake fan (312). The air intake fan (312) is connected to the air supply block (314) through a pipe. The inner wall of the aerobic storage box (311) is symmetrically fixedly connected to a heating supplement lamp (315) with the air supply block (314) as the center. The bottom of the aerobic storage box (311) is fixedly connected to a first suction and exhaust block (316).

7. An acrylonitrile wastewater treatment device according to claim 6, characterized in that, The bottom of the aerobic storage tank (311) is fixedly connected to a first diverter block (32). The two output ends of the first diverter block (32) are connected to a connecting pipe (321). The other end of the connecting pipe (321) passes through the aerobic storage tank (311) and is connected to the first suction and discharge block (316). The side of the aerobic storage tank (311) is fixedly connected to a first water pump (33). The first water pump (33) is electrically connected to a controller. The output end of the first water pump (33) is fixedly connected to a first liquid guide pipe (331). The first liquid guide pipe (331) is connected to one of the input ends of a two-position three-way valve (19) located on one side of the aerobic storage tank (311). The input end of the first water pump (33) is fixedly connected to a first infusion pipe (332). The other end of the first infusion pipe (332) is connected to one of the input ends of the first diverter block (32).

8. An acrylonitrile wastewater treatment device according to claim 7, characterized in that, The anaerobic component (35) includes an anaerobic storage box (351) fixedly connected to the side of the microbial purification box (1). The anaerobic storage box (351) is connected to a communication port on the other side of the microbial purification box (1). The portion of the slide (15) extending into the anaerobic component (35) is fixedly connected to its inner bottom. At least one cooling rod (352) is fixedly connected to the side of the anaerobic component (35). At least one second suction / discharge block (353) is fixedly connected to the inner bottom of the anaerobic component (35). The bottom of component (35) is fixedly connected to a second diversion block (36), the output end of the second diversion block (36) is connected to the second diversion block (36), the side of the anaerobic storage box (351) is fixedly connected to a second water pump (37), the output end of the second water pump (37) is fixedly connected to a second liquid guide pipe (371), the input end of the second water pump (37) is fixedly connected to a second infusion pipe (372), and the other end of the second infusion pipe (372) is connected to the input end of the second diversion block (36).

9. An acrylonitrile wastewater treatment device according to claim 1, characterized in that, The nutrient solution storage mechanism (4) includes a nutrient solution tank (41) fixedly connected to the upper surfaces of the aerobic storage tank (311) and the anaerobic storage tank (351), respectively. A nutrient bottle (42) is snapped onto the upper surface of the nutrient solution tank (41), and a connecting pipe (43) is fixedly connected to the side of the nutrient solution tank (41). The other side of the connecting pipe (43) is connected to the input end of a two-position three-way valve (19).

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