A wastewater treatment device for the production of emulsifiable concentrate herbicides
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGSU HUANONG BIOCHEMICAL CO LTD
- Filing Date
- 2026-05-07
- Publication Date
- 2026-06-30
Smart Images
Figure CN122301404A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of herbicide wastewater treatment technology, specifically to a wastewater treatment device for the production of emulsifiable concentrate herbicides. Background Technology
[0002] The production process of emulsifiable concentrate herbicides generates complex and difficult-to-treat industrial wastewater. This wastewater mainly originates from equipment cleaning, floor washing, and leaks during production. Its typical characteristics include high chemical oxygen demand (COD), high content of solvent oils (such as toluene and xylene), various surfactants (emulsifiers and dispersants), and trace amounts of pesticide active ingredients. These substances collectively constitute a stable oil-in-water (O / W) emulsion system, causing the oil to be stably dispersed in water as micron- or even nano-sized droplets, resulting in a turbid, milky-white appearance and strong biotoxicity. Effective treatment of this type of wastewater is crucial for achieving clean production and compliant emissions in the pesticide industry. Currently, the industry generally... The technical route is often based on the concept of "graded treatment and combined processes". The main goal of the pretreatment stage is to demulsify, remove oil and remove most of the suspended solids to create favorable conditions for subsequent biological treatment. Commonly used pretreatment methods include acidification demulsification, coagulation sedimentation, air flotation, electrolysis and Fenton oxidation, which break the stability of the emulsion and cause the dispersed oil droplets to aggregate and separate. The core treatment stage mainly relies on biodegradation methods, such as hydrolysis acidification, upflow anaerobic sludge blanket (UASB), sequencing batch reactor (SBR) or membrane bioreactor (MBR) processes, which use the metabolism of microorganisms to remove dissolved organic pollutants in wastewater. For high-concentration or recalcitrant wastewater, advanced oxidation technologies (such as ozone oxidation and wet oxidation) are often used as an enhancement method before biological treatment or as a deep guarantee after treatment.
[0003] Existing technologies still have some unresolved inconveniences. In the pretreatment stage, existing technologies generally lack real-time intelligent sensing and decision-making capabilities for influent water quality. Conventional processes often employ fixed demulsifier dosing schemes or uniform physical treatment modes, failing to adaptively adjust based on the dynamic changes in the oil phase composition of the wastewater (such as the difference between light solvent oil and heavy emulsified oil). This "one-size-fits-all" approach often leads to two consequences: for easily emulsified, heat-sensitive wastewater, incomplete demulsification may occur due to insufficient treatment intensity; for high-viscosity, stubborn wastewater, the method may fail to meet the requirements. Improper handling can lead to energy waste or low separation efficiency, and subsequent biochemical units are susceptible to toxicity. Furthermore, in the core oil-water separation stage, existing mainstream technologies such as chemical demulsification-coagulation sedimentation, air flotation, or centrifugal separation have insurmountable limitations. Chemical methods require continuous addition of demulsifiers and coagulants, which not only results in high operating costs but also generates a large amount of chemical sludge, leading to secondary treatment problems. Mechanical separation methods rely on high-intensity shearing or centrifugal force, which results in high power consumption and rapid equipment wear. Moreover, violent fluid disturbances can easily cause the already formed flocs to break or produce secondary emulsification, affecting the separation effect. Summary of the Invention
[0004] The purpose of this invention is to provide a wastewater treatment device for the production of emulsifiable concentrate herbicides, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a wastewater treatment device for the production of emulsifiable concentrate herbicides, comprising: The base plate has a pool structure on its upper surface. The pool structure includes a temperature control component and a separation component. The temperature control component includes a detection component and a temperature adjustment component. The detection component includes two wastewater storage tanks located on the upper surface of the base plate. The interiors of the two wastewater storage tanks are inclined. A filter box is installed at the lowest point inside each wastewater storage tank. A detection pipe is installed between the two wastewater storage tanks. A near-infrared spectrometer and a laser turbidimeter are respectively installed on the inner two sides of the detection pipe. The temperature control component includes: two temperature control pools, a central partition plate at the connection between the two temperature control pools, a movable door on one side surface of the central partition plate, two water supply pipes on the inner side surface of the temperature control pools, two rows of water spray nozzles on the side surface of the water supply pipes, a water inlet plate at one end of the water supply pipes, two water inlet plates at the water inlet end of the temperature control pools, two filter plates on the side surface of the water inlet plates, the water inlet plates communicating with the interior of the water supply pipes, and a temperature control plate on the inner bottom surface of the temperature control pools. The temperature control plates on the inner bottom surfaces of the two temperature control pools are used for heating and cooling, respectively.
[0006] Furthermore, a filter screen is provided on one side surface of the filter box, and a rotatable filter drum is provided inside the filter box. A small motor for controlling the rotation of the filter drum is provided on the upper surface of the filter box. Two movable scrapers are provided on one side surface of the filter box, and a torsion spring is provided at the connection between the movable scrapers and the filter box.
[0007] Furthermore, a feeding box is provided on the side surface of the temperature control pool, and a storage lifting box is provided inside the feeding box. The storage lifting box is filled with magnetic particles. A meshing side plate is provided on one side surface of the storage lifting box, and a control motor is provided on one side surface of the feeding box. The output shaft of the control motor meshes with the center of the meshing side plate. An upper sliding slope is provided on the upper surface of the feeding box, and a lower sliding slope is provided on one side surface of the feeding box. A throwing fan is provided on the bottom surface of the lower sliding slope, and a sealed drive box for driving the throwing fan is provided on the bottom surface of the throwing fan.
[0008] Furthermore, both of the temperature control pools are provided with heat-insulating covers on their upper surfaces. A drive motor is provided on the upper surface of the heat-insulating cover. A rotating shaft is provided on the output end of the drive motor. Multiple fixed discs are provided on the surface of the rotating shaft. An annular bottom groove is provided on the bottom surface of each fixed disc. A buoyancy disc is provided between every two fixed discs. The buoyancy disc has a hollow structure.
[0009] Furthermore, the upper surface of the buoyancy disk is provided with a connecting side block, the side surface of the connecting side block is provided with multiple mixing fan blades, the upper surface of the connecting side block is provided with multiple small inserts that cooperate with the annular bottom groove, the bottom surface of the buoyancy disk is provided with a bottom insert ring, and except for the uppermost fixed disk, the upper surfaces of the other fixed disks are provided with top rotating rings that cooperate with the bottom insert rings.
[0010] Furthermore, the separation assembly includes: a separation tank disposed between two temperature-controlled tanks, with water pumps installed on both sides of the inner surface of the separation tank, a top frame installed on the upper surface of the separation tank, an electric telescopic rod installed on the bottom surface of the top frame, a water supply pipe installed at the end of the electric telescopic rod, and one end of the water supply pipe connected to the input end of the water pump.
[0011] Furthermore, the upper surface of the separation tank is provided with multiple top connecting blocks, the upper surface of the top connecting blocks is provided with multiple annular magnetic conveying frames, the upper surface of the annular magnetic conveying frames is provided with a drive controller, the interior of the separation tank is also provided with a liftable buoyancy plate, the side surface of the buoyancy plate is provided with multiple sliders, and the inner side surface of the separation tank is provided with a sliding groove that cooperates with the sliders.
[0012] Furthermore, the upper surface of the buoyancy plate is provided with multiple oil extraction branch pipes, one end of each oil extraction branch pipe is provided with a top manifold box, the top of the buoyancy plate is provided with a bottom float, and one side surface of the buoyancy plate is also provided with a water extraction connector. The upper surfaces of the top manifold box and the water extraction connector are both provided with transmission hoses. The side surface of the separation tank is provided with two extraction connectors, which are used for water extraction and oil extraction respectively, and the two extraction connectors are respectively connected to one end of the two transmission hoses.
[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. In this solution, a temperature control component is incorporated, integrating online real-time detection by a near-infrared spectrometer and a laser turbidimeter to achieve intelligent identification and automatic diversion of wastewater types. This overcomes the limitations of traditional processes that rely on fixed treatment modes, ensuring the accuracy and efficiency of subsequent temperature control from the source. The temperature control component not only achieves precise heating or cooling through a temperature control plate to directionally change the properties of oil droplets, but also achieves adaptive adjustment of stirring intensity through a linkage stirring system consisting of a drive motor, rotating shaft, fixed disc, and hollow buoyancy disc. The buoyancy disc can rise and fall with the liquid level, and is activated by the engagement or disengagement of small inserts with the annular bottom tank. The automatic adjustment of the mixing fan blades' working depth effectively avoids the industry problem of air entrapment and stubborn foam caused by the agitator being exposed above the water surface, ensuring the stability of the pretreatment system. At the same time, the feeding system in the feeding box ensures the quantitative and uniform addition of magnetic particles, and works synergistically with the upward flow formed by the water spray head on the water supply pipe to prevent particle sedimentation. This allows the magnetic particles to fully contact the conditioned oil droplets to form stable "magnetic-oil micro-clusters," significantly improving pretreatment efficiency and consistency. This lays a reliable foundation for subsequent high-efficiency magnetic separation and reduces the risk of energy consumption and treatment failure caused by process incompatibility or operational fluctuations. 2. In this solution, a separation component is incorporated. A dynamic moving magnetic field, generated by a ring-shaped magnetic conveyor under programmed drive controller, enables non-contact, directional traction and enrichment of "magnetic-oil micro-clusters" in water. The separation power originates from magnetic force rather than mechanical shearing, fundamentally eliminating the secondary emulsification problem common in traditional centrifugal or stirring separations, thus ensuring separation purity. The dynamic magnetic field efficiently gathers the oil-magnetic complex to the liquid surface. Simultaneously, the buoyancy plate with a built-in bottom float can precisely and adaptively suspend itself at the changing oil-water interface, while its side slider... The interaction with the pool wall chute ensures stability. The oil layer enriched on the liquid surface is collected by the oil extraction branch pipes arrayed on the upper surface of the buoyancy plate, while the lower layer of clear water is extracted through the side water extraction joint. The two phases are output through independent transmission hoses and extraction joints, realizing continuous and high-purity separation of oil-water-magnetic three phases. The electric telescopic rod on the top frame can adjust the depth of the water delivery pipe, further optimizing the clear water extraction point. This makes the entire separation process free from the addition of chemical demulsifiers. The separated magnetic particles are easy to recover and reuse, realizing clean production and resource recycling. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the detection component of the present invention; Figure 3 This is a schematic diagram of the internal structure of the temperature regulating component of the present invention; Figure 4 This is a schematic diagram of the buoyancy disk and hybrid fan blade structure of the present invention; Figure 5 This is a schematic diagram of the fixed disk and buoyancy disk structure of the present invention; Figure 6 This is a schematic diagram of the feeding box structure of the present invention; Figure 7 This is a schematic diagram of the internal structure of the feeding box of the present invention; Figure 8 This is a schematic diagram of the buoyancy plate structure of the present invention.
[0015] In the diagram: 1. Foundation plate; 2. Wastewater storage tank; 3. Detection pipe; 4. Insulation cover; 5. Drive motor; 6. Feeding box; 7. Separation tank; 8. Extraction connector; 9. Buoyancy plate; 10. Annular magnetic conveyor frame; 11. Drive controller; 12. Temperature control tank; 13. Filter screen; 14. Filter drum; 15. Movable scraper; 16. Near-infrared spectrometer; 17. Laser turbidimeter; 18. Filter box; 19. Water supply pipe; 20. Spray head; 21. Water inlet plate; 22. Filter plate; 23. Central partition plate; 24. Movable door; 25. Water pump; 26. Top 27. Frame; 28. Electric telescopic rod; 29. Water supply pipe; 30. Rotating shaft; 31. Upper sliding ramp; 32. Top connecting block; 33. Transmission hose; 34. Top manifold box; 35. Oil extraction branch pipe; 36. Fixed disc; 37. Buoyancy disc; 38. Mixing fan blade; 49. Top rotating ring; 40. Connecting side block; 41. Bottom insert ring; 42. Annular bottom groove; 43. Small insert; 44. Control motor; 45. Lower sliding ramp; 46. Sealed drive box; 47. Throwing fan; 48. Storage lifting box; 49. Meshing side plate; 50. Bottom float; 51. Water pumping connector. Detailed Implementation
[0016] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] Example 1: Please refer to Figures 1 to 8 A wastewater treatment device for the production of emulsifiable concentrate herbicides, comprising: The foundation slab 1 has a pool structure on its upper surface. This pool structure includes a temperature control component and a separation component. The temperature control component includes a detection component and a temperature adjustment component. The detection component is the intelligent front-end sensing and pretreatment unit of the wastewater treatment system. The detection component includes two wastewater storage tanks 2, which are located on the upper surface of the foundation slab 1. The interiors of the two wastewater storage tanks 2 are inclined. This structure utilizes the principle of gravity sedimentation, allowing denser suspended solids and heavy impurities in the wastewater to settle along the inclined surface. The slope naturally slides to the lowest point of the tank, achieving primary concentration and collection. A filter box 18 is installed at the lowest point inside the wastewater storage tank 2. A filter screen 13 is installed on one side surface of the filter box 18. A rotatable filter drum 14 is also installed inside the filter box 18. When wastewater enters the box and flows through the rotating drum, the water penetrates the mesh, while solid particles, fibers, and other impurities larger than the mesh size are trapped and adhere to the outer wall of the drum, achieving continuous dynamic filtration. The upper surface of the filter box 18 is equipped with a control... A small motor rotates the filter drum 14. Two movable scrapers 15 are provided on one side of the filter box 18. A torsion spring is provided at the connection between the movable scrapers 15 and the filter box 18. A detection pipe 3 is provided between the two wastewater storage tanks 2. The wastewater after preliminary filtration is collected and transported to the next stage through the detection pipe 3 connecting the two wastewater storage tanks 2. Near-infrared spectrometer 16 and laser turbidimeter 17 are respectively provided on the inner two sides of the detection pipe 3. The near-infrared spectrometer 16 emits near-infrared light of a specific wavelength and analyzes the absorption and transmission characteristics of the spectrum after penetrating the water flow. It can identify the chemical bonds and functional groups of organic matter in the wastewater in a non-contact and rapid manner, thereby qualitatively and semi-quantitatively analyzing the type and approximate concentration of the oil phase. The laser turbidimeter 17 emits a stable laser beam through the water flow and accurately detects the laser scattering intensity caused by suspended particles in the water. By analyzing the characteristics of the scattered light signal, the turbidity value of the wastewater can be measured in real time, and the particle size distribution and emulsification stability of oil droplets in the water can be further analyzed. After initial sedimentation, the wastewater from the production of emulsifiable concentrate herbicides undergoes pretreatment in the filter box 18 at the bottom of wastewater storage tank 2. During use, the wastewater is discharged into the two wastewater storage tanks 2. At this time, the filter drum 14 rotates continuously under the drive of a small motor, achieving dynamic solid-liquid separation on its surface, separating larger solid particles from the liquid. A movable scraper 15, provided with constant pressure by a torsion spring, continuously removes filter residue from the surface of the filter drum 14, ensuring filtration efficiency. After the wastewater passes through the filter box 18, as it flows through the detection pipe 3, the laser turbidity meter 17 accurately measures the laser scattering intensity. The system quantifies the emulsification degree and average particle size of oil droplets in wastewater. Simultaneously, a near-infrared spectrometer analyzes the characteristic absorption spectrum of the water body to identify the specific chemical composition of the oil phase. The control system integrates these two types of real-time data to establish a diversion decision logic. When the laser scattering signal is strong (high turbidity) and the spectrum shows easily emulsifiable light mineral oil or solvent, it is determined to be "heat-sensitive" wastewater, and its fine oil droplets can be promoted to coalesce through heating. When the laser scattering shows pulse characteristics (large-diameter oil droplets are present) and the spectrum shows high viscosity and high freezing point heavy oil or lipids, it is determined to be "stubborn" wastewater, which needs to be cooled to solidify and precipitate.
[0018] The temperature control component is the core pretreatment and material conditioning unit of this wastewater treatment system. It includes two temperature-controlled tanks 12, with a central partition plate 23 at the connection point. A movable door 24 is located on one side of the partition plate 23, controlled by a decision signal from a detection component. When the wastewater is determined to be "heat-sensitive," the movable door 24 leading to the corresponding temperature-controlled tank (with a built-in heating temperature control plate) opens. When it is determined to be "stubborn," the door leading to the other side (with a built-in cooling temperature control plate) opens, thus achieving automatic directional diversion of the wastewater. Two water supply pipes 19 are located on the inner side surface of each temperature-controlled tank 12, with two rows of spray nozzles 20 on their side surfaces. The spray direction of the nozzles 20 is mainly towards the upper part of the tank, serving not only to distribute water evenly but, more importantly, to create a continuous upward flow disturbance within the tank. This upward flow effectively counteracts the settling tendency of magnetic particles due to their own weight, keeping them in the water. By maintaining a longer suspension state, the probability of collision and contact with oil droplets is significantly increased, thereby improving the formation efficiency of "magnetic-oil micro-clusters". One end of the water supply pipe 19 is equipped with a water inlet plate 21, where wastewater first impacts and undergoes preliminary energy dissipation. Two water inlet plates 21 are located at the water inlet of the temperature control tank 12. Two filter plates 22 are installed on the side surface of the water inlet plates 21. The water inlet plates 21 are internally connected to the water supply pipe 19. A temperature control plate is installed on the bottom surface of the temperature control tank 12. The two temperature control plates in the temperature control tank 12 have different functions: one is used for heating, with a built-in resistance wire for introducing the heat medium; the other is used for cooling, with a built-in semiconductor cooling chip for introducing the refrigerant. The side surface of the temperature control tank 12... The system is equipped with a feeding box 6, inside which is a storage lifting box 47 filled with magnetic particles. One side surface of the storage lifting box 47 has an engaging side plate 48. A control motor 43 is mounted on one side surface of the feeding box 6, and the output shaft of the control motor 43 engages with the center of the engaging side plate 48. An upward sliding slope 30 is provided on the upper surface of the feeding box 6, and a downward sliding slope 44 is provided on one side surface of the feeding box 6. A throwing fan 46 is mounted on the bottom surface of the downward sliding slope 44. The blades of the throwing fan 46 disperse the falling particle stream and horizontally scatter it into the temperature-controlled pool 12, ensuring uniform distribution of particles on the surface of the pool water and avoiding localized areas of congestion. The bottom surface of the stacking and throwing fan 46 is provided with a sealed drive box 45 for driving it. To enhance the mixing effect and maintain temperature uniformity, each temperature control pool 12 is covered with an insulation cover plate 4 to reduce heat loss. The upper surface of the insulation cover plate 4 is provided with a drive motor 5. The output end of the drive motor 5 is provided with a rotating shaft 29. The surface of the rotating shaft 29 is provided with multiple fixed discs 35. The bottom surface of the fixed discs 35 is provided with an annular bottom groove 41. A buoyancy disc 36 is provided between every two fixed discs 35. The buoyancy disc 36 has a hollow structure. The upper surface of the buoyancy disc 36 is provided with a connecting side block 39. The side surface of the connecting side block 39 is provided with multiple mixing fan blades 37.The upper surface of the connecting side block 39 is provided with multiple small inserts 42 that cooperate with the annular bottom groove 41. When the liquid level in the pool is normal, the buoyancy plate 36 floats up under the action of buoyancy, and its small inserts 42 are precisely inserted into the annular bottom groove 41 of the upper fixed plate 35, thereby realizing dynamic coupling. The bottom surface of the buoyancy plate 36 is provided with a bottom insert ring 40. Except for the uppermost fixed plate 35, the upper surface of the other fixed plates 35 is provided with a top rotating ring 38 that cooperates with the bottom insert ring 40. When the pool water is... When the liquid level drops and the water is removed, the buoyancy disk 36, having lost its buoyancy support, will sink due to its own weight. Its bottom insert ring 40 will then rest on the top rotating ring 38 of the fixed disk 35 below. At this time, even if the lower buoyancy disk 36 is still rotating, the rotation speed of the buoyancy disk 36 and its blades, which are now detached from the water surface, will be significantly reduced or stopped due to the bearing action of the top rotating ring 38. This effectively avoids the problems of liquid splashing, air entrapment, and excessive foam generation caused by the stirring blades spinning at high speed in the air. Based on the intelligent judgment of the detection components, the movable door 24 on the side surface of the central partition plate 23 will open the corresponding movable door 24, and the wastewater is diverted to the corresponding temperature-controlled pool 12. If it is "heat-sensitive" wastewater, it enters the pool equipped with a heating temperature control plate, and the temperature is precisely controlled at 50-70℃. This temperature field can significantly reduce the oil-water interfacial tension, destroy the stability of the emulsifier, and intensify the collision and aggregation of fine oil droplets through Brownian motion, causing their particle size to increase, which is convenient for subsequent magnetic capture. If it is "stubborn" wastewater, it enters the pool equipped with a cooling temperature control plate, and the temperature is rapidly reduced to 5-15℃. The low temperature environment raises the freezing point of high-viscosity oil phase or lipids, causing them to undergo phase change, transforming from a viscous liquid to solid or semi-solid brittle particles. This change in physical morphology improves the efficiency of the wastewater treatment process. When wastewater enters the temperature control tank 12, it comes into contact with the side surface of the inlet plate 21. At this time, some of the liquid will pass through the filter plate 22 and enter the spray head 20, and be sprayed upward from the bottom of the water surface through the spray head 20. In this way, during the subsequent mixing process of magnetic particles, the settled magnetic particles will be carried upward from the bottom of the tank, avoiding the situation where the mixing efficiency of magnetic particles with wastewater is reduced due to sedimentation. At the same time, the fixed plate 35 and the rotating shaft 29 are driven to rotate by the drive motor 5. When there is a lot of wastewater inside the temperature control tank 12, the buoyancy plate 36 will rise with the buoyancy of the water. Multiple small stakes 42 on the upper surface of the buoyancy plate 36 will be inserted into the bottom surface of the fixed plate 35 above it. Inside the annular bottom trough 41, when the drive motor 5 drives the fixed disk 35, it will cause the buoyancy disk 36 to rotate, stirring the wastewater and allowing the magnetic particles to mix better with the wastewater. In the subsequent wastewater extraction process, as the water level decreases, the upper buoyancy disk 36 will descend due to the loss of buoyancy. Its bottom insert ring 40 is mounted on top of the top rotating ring 38 on the upper surface of the lower buoyancy disk 36. Because the top rotating ring 38 can rotate independently on the upper surface of the fixed disk 35, when the drive motor 5 drives the lower buoyancy disk 36 to rotate, the upper buoyancy disk 36, which is above the water surface, will reduce its rotation to avoid... The mixing fan blades 37, emerging from the water surface, continue to rotate at high speed, slapping against the air and liquid surface, forcibly injecting a large amount of air into the liquid, forming stubborn foam that is difficult to eliminate. This foam occupies the effective volume of the pool, affecting the throughput, and also encapsulates oil droplets and magnetic particles, forming a stable "air-oil-particle" mixture that interferes with subsequent demulsification and separation. The control motor 43 inside the feeding box 6 drives the side plate 48 via gears, causing the storage lifting box 47 to lift the magnetic particles inside. Once it reaches a certain height, the magnetic particles flow out from inside the storage lifting box 47, are guided by the upper sliding slope 30 and the lower sliding slope 44, and are then evenly scattered into the pool by the throwing fan 46. Under this synergistic effect, after temperature conditioning, the oil droplets and magnetic particles achieve efficient heterogeneous coagulation.This process forms "magnetic-oil microclusters" with magnetic particles at their cores and oil phase encapsulation around them, creating a prerequisite for subsequent magnetic separation with suitable particle size and magnetic stability.
[0019] The separation assembly is the core separation and output unit of this wastewater treatment system, undertaking the crucial task of efficiently separating and collecting the pretreated wastewater into oil, water, and magnetic phases. The separation assembly includes: a separation tank 7, located between two temperature-controlled tanks 12. Pumps 25 are installed on both sides of the interior of the separation tank 7 to pump the wastewater to be treated from the temperature-controlled tanks 12 into the separation tank 7. A top frame 26 is installed on the upper surface of the separation tank 7, and an electric telescopic rod 27 is installed on the bottom surface of the top frame 26. A water supply pipe 28 is provided at the end, one end of which is connected to the input end of a water pump 25. Multiple top connecting blocks 31 are provided on the upper surface of the separation tank 7, and multiple annular magnetic conveyor frames 10 are provided on the upper surface of the top connecting blocks 31. The annular magnetic conveyor frame 10 is the core device for achieving efficient magnetic separation; its structure is a closed annular track, with a large number of electromagnetic coils arranged in a specific pattern inside the track. A drive controller 11 is provided on the upper surface of the annular magnetic conveyor frame 10, which can output specific signals to these electromagnetic coils according to a preset program. A sequential current is used to generate a dynamic magnetic field within the space enclosed by the circular track. This magnetic field has adjustable intensity and gradient and can move directionally along the circular path. When wastewater containing "magnetic-oil micro-clusters" enters the area of this magnetic field, the magnetic particles in the micro-clusters are subjected to a strong magnetic force, are "captured" and "dragged" by the moving magnetic field, and are driven to migrate directionally along a preset circular path in the water. The separation tank 7 is also equipped with a liftable buoyancy plate 9. The side surface of the buoyancy plate 9 is equipped with multiple sliders, and the inner side surface of the separation tank 7 is opened... The buoyancy plate 9 has a sliding groove that cooperates with the slider. Multiple oil extraction branch pipes 34 are provided on the upper surface of the buoyancy plate 9. A top manifold box 33 is provided at one end of the oil extraction branch pipe 34. A bottom float 49 is provided at the bottom of the buoyancy plate 9. A water extraction connector 50 is also provided on one side surface of the buoyancy plate 9. A transmission hose 32 is provided on the upper surface of both the top manifold box 33 and the water extraction connector 50. Two extraction connectors 8 are provided on the side surface of the separation tank 7. The two extraction connectors 8 are used for water discharge and oil discharge, respectively. The two extraction connectors 8 are connected to one end of the two transmission hoses 32, respectively. After the wastewater carrying "magnetic-oil micro-clusters" enters the separation tank 7 via the pump 25, the magnetic separation process is initiated. Under the programmed control of the drive controller 11, the annular magnetic conveyor 10 generates a dynamic magnetic field with adjustable intensity, gradient, and movement timing. This magnetic field acts non-contactly on the entire volume of the separation tank 7, powerfully capturing and pulling the "magnetic-oil micro-clusters" in the water, causing them to migrate directionally along a preset annular magnetic path. Ultimately, a high-concentration oil-magnetic mixture layer is enriched at the liquid surface. This process realizes the active and directional transport of the oil phase from the water body. The separation power comes from the magnetic field rather than fluid agitation, so there is no risk of secondary emulsification. At the same time, the buoyancy plate 9 with the built-in bottom float 49 adaptively and stably floats at the oil-water interface. The cooperation between the side slider and the pool wall groove ensures vertical freedom and horizontal stability. The oil-magnetic mixture layer enriched on the liquid surface is collected by the oil extraction branch pipes 34 arrayed on the upper surface of the buoyancy plate 9 and flows into the top manifold box 33. The clear water in the lower layer is extracted through the water extraction joint 50 on the side of the buoyancy plate 9. The two phases of fluid are guided to two extraction joints 8 through independent transmission hoses 32 to achieve continuous and high-purity separation. The electric telescopic rod 27 on the top frame 26 can precisely adjust the immersion depth of the water supply pipe 28 and work with the water pump 25 to optimize the clear water extraction point and avoid entrainment. This achieves efficient and clean separation of the oil-water-magnetic three phases. The magnetic particles can be recycled after being de-oiled.
[0020] The working principle of this invention is: When this device is working, the wastewater from the production of emulsifiable oil herbicides first enters two inclined wastewater storage tanks 2 for preliminary sedimentation. Inside the filter box 18 at the bottom of the tank, the filter drum 14 driven by a small motor rotates continuously, and the filter screen 13 on its surface performs dynamic solid-liquid separation of the wastewater. The movable scraper 15 scrapes off the filter residue in real time under the action of the torsion spring to ensure flow. Subsequently, the wastewater flows into the detection pipe 3 connecting the two tanks. The laser turbidity meter 17 and the near-infrared spectrometer 16, which are symmetrically arranged in the pipe, perform online real-time detection of the water flow. The laser turbidity meter 17 judges the degree of emulsification and particle size of the oil droplets by analyzing the laser scattering intensity, while the near-infrared spectrometer 16 identifies the chemical composition of the oil by analyzing the characteristic absorption spectrum. The control system integrates the data from both to intelligently determine the type of wastewater: if it is high turbidity and contains easily emulsifiable light oil, it is judged as "heat-sensitive type", and the inlet path of the corresponding temperature control tank 12 is opened; if it shows the presence of large oil droplets and contains high viscosity heavy oil, it is judged as "stubborn type", and the path of the other temperature control tank 12 is opened. After being assessed, the wastewater passes through the inlet plate 21 and the filter plate 22 on its side, and enters the designated temperature-controlled tank 12. The temperature control plate at the bottom of the tank provides precise heating (50-70℃) or cooling (5-15℃) according to the type of oil droplets to change their properties. At the same time, the drive motor 5 drives the multi-layer stirring system, consisting of a rotating shaft 29, a fixed disc 35, and a hollow buoyancy disc 36, to rotate. The mixing fan blades 37 on the connected side block 39 gently stir the wastewater, promoting uniform temperature and material properties. The buoyancy disc 36... The depth can be automatically adjusted according to the liquid level to avoid the agitator being exposed above the water surface and generating foam. Simultaneously, the control motor 43 in the feeding box 6 drives the meshing side plate 48 to quantitatively lift the magnetic particles in the storage lifting box 47. After being guided by the upper sliding slope 30 and the lower sliding slope 44, they are evenly scattered into the pool by the throwing fan 46. The magnetic particles fully contact and adsorb with the conditioned oil droplets to form "magnetic-oil micro-clumps". The water spray head 20 on the water supply pipe 19 sprays water from the bottom of the pool upwards to prevent the magnetic particles from settling. Wastewater carrying "magnetic-oil micro-clusters" then enters the central separation tank 7. The annular magnetic conveyor frame 10 at the top of the tank generates a dynamic moving magnetic field under the control of the drive controller 11, which captures and pulls the "magnetic-oil micro-clusters" in the water non-contactly, causing them to migrate directionally along a preset magnetic path and accumulate on the liquid surface. At the same time, the buoyancy plate 9, which is equipped with floats 49 at the bottom, adaptively suspends itself at the oil-water interface. The oil-magnetic mixture accumulated on the liquid surface is collected by multiple oil extraction branches 34 on the upper surface of the buoyancy plate 9, flows into the top manifold box 33, and is discharged from an oil extraction connector 8 through a transmission hose 32. The clarified water in the lower layer is extracted through the water extraction connector 50 on the side of the buoyancy plate 9 and discharged from the water extraction connector 8 through another transmission hose 32, achieving efficient oil-water separation. The electric telescopic rod 27 on the top frame 26 can adjust the depth of the water supply pipe 28 to optimize water extraction. The separated magnetic particles can be recycled and reused after oil removal.
[0021] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. An apparatus for treating wastewater from emulsifiable concentrate herbicide production, characterized by comprising: include: The base plate has a pool structure on its upper surface. The pool structure includes a temperature control component and a separation component. The temperature control component includes a detection component and a temperature adjustment component. The detection component includes two wastewater storage tanks located on the upper surface of the base plate. The interiors of the two wastewater storage tanks are inclined. A filter box is installed at the lowest point inside each wastewater storage tank. A detection pipe is installed between the two wastewater storage tanks. A near-infrared spectrometer and a laser turbidimeter are respectively installed on the inner two sides of the detection pipe. The temperature control component includes: two temperature control pools, a central partition plate at the connection between the two temperature control pools, a movable door on one side surface of the central partition plate, two water supply pipes on the inner side surface of the temperature control pools, two rows of water spray nozzles on the side surface of the water supply pipes, a water inlet plate at one end of the water supply pipes, two water inlet plates at the water inlet end of the temperature control pools, two filter plates on the side surface of the water inlet plates, the water inlet plates communicating with the interior of the water supply pipes, and a temperature control plate on the inner bottom surface of the temperature control pools. The temperature control plates on the inner bottom surfaces of the two temperature control pools are used for heating and cooling, respectively.
2. The wastewater treatment device for the production of emulsifiable concentrate herbicides according to claim 1, characterized in that: A filter screen is provided on one side surface of the filter box, and a rotatable filter drum is also provided inside the filter box. A small motor for controlling the rotation of the filter drum is provided on the upper surface of the filter box. Two movable scrapers are provided on one side surface of the filter box, and a torsion spring is provided at the connection between the movable scrapers and the filter box.
3. The wastewater treatment device for the production of emulsifiable concentrate herbicides according to claim 1, characterized in that: The temperature control tank has a feeding box on its side surface, and a storage lifting box is installed inside the feeding box. The storage lifting box is filled with magnetic particles. A meshing side plate is installed on one side surface of the storage lifting box. A control motor is installed on one side surface of the feeding box. The output shaft of the control motor meshes with the center of the meshing side plate. An upper sliding slope is installed on the upper surface of the feeding box. A lower sliding slope is installed on one side surface of the feeding box. A throwing fan is installed on the bottom surface of the lower sliding slope. A sealed drive box for driving the throwing fan is installed on the bottom surface of the throwing fan.
4. A wastewater treatment device for the production of emulsifiable concentrate herbicides according to claim 1, characterized in that: Both temperature-controlled pools are provided with heat-insulating covers on their upper surfaces. A drive motor is provided on the upper surface of the heat-insulating cover. A rotating shaft is provided on the output end of the drive motor. Multiple fixed discs are provided on the surface of the rotating shaft. An annular bottom groove is provided on the bottom surface of each fixed disc. A buoyancy disc is provided between every two fixed discs. The buoyancy disc has a hollow structure.
5. A wastewater treatment device for the production of emulsifiable concentrate herbicides according to claim 4, characterized in that: The upper surface of the buoyancy disk is provided with a connecting side block, the side surface of the connecting side block is provided with multiple mixing fan blades, the upper surface of the connecting side block is provided with multiple small inserts that cooperate with the annular bottom groove, the bottom surface of the buoyancy disk is provided with a bottom insert ring, and except for the uppermost fixed disk, the upper surfaces of the other fixed disks are provided with top rotating rings that cooperate with the bottom insert rings.
6. A wastewater treatment device for the production of emulsifiable concentrate herbicides according to claim 1, characterized in that: The separation assembly includes: a separation tank, which is located between two temperature-controlled tanks. Water pumps are installed on both sides of the inner surface of the separation tank. A top frame is installed on the upper surface of the separation tank. An electric telescopic rod is installed on the bottom surface of the top frame. A water supply pipe is installed at the end of the electric telescopic rod. One end of the water supply pipe is connected to the input end of the water pump.
7. A wastewater treatment device for the production of emulsifiable concentrate herbicides according to claim 6, characterized in that: The upper surface of the separation tank is provided with multiple top connecting blocks, the upper surface of the top connecting blocks is provided with multiple annular magnetic conveying frames, the upper surface of the annular magnetic conveying frames is provided with a drive controller, the interior of the separation tank is also provided with a liftable buoyancy plate, the side surface of the buoyancy plate is provided with multiple sliders, and the inner side surface of the separation tank is provided with a sliding groove that cooperates with the sliders.
8. A wastewater treatment device for the production of emulsifiable concentrate herbicides according to claim 7, characterized in that: The upper surface of the buoyancy plate is provided with multiple oil extraction branch pipes, one end of which is provided with a top manifold box. The top of the buoyancy plate is provided with a bottom float. One side surface of the buoyancy plate is also provided with a water extraction connector. The upper surfaces of the top manifold box and the water extraction connector are both provided with transmission hoses. The side surface of the separation tank is provided with two extraction connectors, which are used for water extraction and oil extraction, respectively. The two extraction connectors are respectively connected to one end of the two transmission hoses.