Wastewater recovery device for pigment production and method of use thereof

Abstract

The application relates to the technical field of sewage treatment, and discloses a wastewater recovery device for pigment production and a use method thereof. The device aims to solve the problems of poor pretreatment effect, low oxygen content and inconvenient maintenance of the filtering assembly in the existing treatment. The technical scheme comprises a sedimentation chamber on a bearing frame, which is divided into a pretreatment cavity and an aeration cavity by a partition plate. A biological filtering assembly is arranged in the pretreatment cavity to adsorb impurities, and an aeration assembly is arranged in the aeration cavity to improve the oxygen content of water. A filter box is connected with the sedimentation chamber through pipelines, and a coarse filter cylinder and a fine filter cylinder in a nested layout are arranged in the filter box. A mounting box is connected with the filter box, and a conveying pump is arranged in the mounting box. After biological filtration and aeration, sewage is pumped into the filter box by the conveying pump to be doubly filtered from coarse to fine. The application can effectively pretreat sewage, improve the oxygen content, and conveniently disassemble and maintain the filtering mechanism.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater recovery device for pigment production and its usage method. Background Technology

[0002] The pigment production process generates a large amount of wastewater. This wastewater contains various impurities such as pigment particles, chemicals, and microorganisms. Direct discharge of this wastewater would not only cause serious environmental pollution but also waste a significant amount of water resources. Therefore, the effective treatment and recycling of pigment production wastewater is of great practical importance.

[0003] Currently, existing wastewater treatment equipment typically suffers from the following problems when treating pigment production wastewater: 1. Pigment production wastewater contains a large number of large particulate impurities. If these impurities cannot be effectively removed during the pretreatment stage, it will increase the burden on the subsequent filter components, reduce the filtration efficiency, and may even cause the filter components to become clogged, affecting the normal operation of the entire wastewater treatment device.

[0004] 2. Microorganisms in wastewater require a certain oxygen content to grow and metabolize normally, thereby decomposing organic matter in the wastewater. However, existing wastewater treatment devices are insufficient in aeration, failing to effectively increase the oxygen content in the wastewater, which affects the activity of microorganisms and consequently impacts the wastewater treatment effect.

[0005] 3. The filter assembly is one of the core components of a wastewater treatment system, and the ease of its installation and replacement directly affects the maintenance cost and efficiency of the system. In existing wastewater treatment systems, the installation of filter assemblies is often quite complex, requiring a significant amount of manpower and time. Moreover, replacing filter assemblies can easily damage other components of the system. To address the aforementioned problems, this invention proposes a wastewater recovery device for pigment production and its usage method. Summary of the Invention

[0006] This invention provides a wastewater recycling device for pigment production and its usage method, which solves the shortcomings of the prior art in treating wastewater from pigment production, such as poor pretreatment effect, insufficient aeration, and inconvenience in installing and replacing the filter mechanism.

[0007] This invention provides the following technical solution: A wastewater recovery device for pigment production includes: A load-bearing frame has a sedimentation chamber fixedly installed on its top. A partition is fixedly installed inside the sedimentation chamber, which divides the sedimentation chamber into a pretreatment chamber and an aeration chamber. A water inlet is provided at the bottom of the partition. A biological filtration assembly includes a lap ring fixedly installed in a pretreatment chamber, wherein a filter media box is detachably disposed within the lap ring, and the filter media box contains biological filter media; An aeration assembly includes an installation pipe fixedly installed inside an aeration chamber, with multiple spray pipes connected to the bottom of the installation pipe, and an air pump connected to the installation pipe installed on one side of the sedimentation chamber. The filter box is connected to the outlet pipe at the bottom of the sedimentation chamber via a connecting pipe. The filter box contains a coarse filter cartridge and a fine filter cartridge, with the fine filter cartridge nested inside the coarse filter cartridge. The mounting box is detachably connected to the filter box. A delivery pump is installed inside the mounting box. The suction end of the delivery pump is connected to the connecting pipe through a hose, and the output end extends into the filter box. The wastewater is pretreated by the biological filtration components and then enters the aeration chamber through the water inlet. After aeration, it is pumped into the filter box by the transfer pump for double filtration.

[0008] Furthermore, a support ring is fixedly installed on the top of the filter media box, and the support ring is placed on the support ring. An inclined panel located below the filter media box is installed at the bottom of the sedimentation chamber.

[0009] A water injection pump is installed on one side of the sedimentation chamber. The water injection pump is connected to a spray plate pipe through a delivery pipe. The spray plate pipe is located above the pretreatment chamber.

[0010] A fixing ring is fixedly installed inside the filter box, and a docking ring is installed on one side of the fixing ring. The docking ring has a first annular groove and a second annular groove that respectively accommodate the coarse filter cartridge and the fine filter cartridge.

[0011] A limiting ring II is fixedly installed inside the coarse filter cartridge, and a limiting ring I is fixedly fitted on the fine filter cartridge. The limiting ring II presses against the limiting ring I to achieve the positioning of the fine filter cartridge.

[0012] A limiting ring Ⅲ is fixedly fitted on the coarse filter cartridge, and a pressure tube is fixedly installed inside the mounting box. The pressure tube extends into the filter box to press the limiting ring Ⅲ and achieve the positioning of the coarse filter cartridge.

[0013] It also includes a sliding mechanism, which comprises: A support plate that is fixedly installed on a load-bearing frame; Two mounting brackets are symmetrically installed on the top of the tray, and the filter box is fixedly installed on the mounting brackets; A U-shaped frame is slidably connected to two mounting brackets, and the two sides of the U-shaped frame are fixedly connected to the mounting box.

[0014] It also includes an adaptive aeration nozzle structure. This structure optimizes the bottom of the mounting pipe and links it with the nozzle through a shape memory alloy and a flow sensor. The shape memory alloy is a Ni-Ti composite material. When the airflow generates heat during aeration, causing the temperature to rise by ΔT, the nozzle bends at an angle θ = β * ΔT, where β is the response coefficient. This automatically adjusts the spray direction to compensate for uneven bubble distribution in the wastewater after aeration. The compensated unevenness is V' = V - (β * ΔT), where V' is the compensated unevenness and V is the original unevenness. The flow sensor is integrated into the air pump and electrically connected to the water injection pump. It monitors the airflow in real time and feeds back to the water injection pump. The water injection pump finely adjusts the rotation of the spray plate according to the airflow signal, ensuring uniform distribution of the biological filter media for dynamic and balanced aeration, thus achieving precise treatment of uneven wastewater. This structure is suitable for the general processing of various industrial wastewaters, overcoming the efficiency loss caused by uneven bubble distribution in traditional fixed aeration.

[0015] The mounting box is rotatably connected to multiple positioning tubes, each positioning tube having a nut connected to one end. The filter box is fixedly installed with multiple locking plates. A screw passes through the locking plate and is threadedly connected to the nut. A rotating pressure head that is in close contact with the locking plate is installed at the end of the screw.

[0016] The method of using the wastewater recovery device for pigment production includes the following steps: S1. Filter cartridge installation and positioning: Secure the coarse filter cartridge and fine filter cartridge onto the docking ring, and use the limiting ring II to press the limiting ring I to position the fine filter cartridge; then dock the mounting box with the filter box, insert the pressure tube into the filter box and press the limiting ring III to position the coarse filter cartridge, thus completing the stable installation of the coarse filter cartridge and fine filter cartridge. S2. Box connection and locking: After the filter box and the mounting box are connected, rotate the positioning tube to make the screw pass through the bayonet; then rotate the screw, and drive the screw to move through the thread transmission with the nut, thereby driving the rotating pressure head to approach the locking plate until it is in close contact, realizing the stable connection between the mounting box and the filter box, and forming a stable limit for the coarse filter cartridge and the fine filter cartridge; S3. Wastewater Pretreatment and Aeration: Start the water injection pump to transport the wastewater from pigment production to the delivery pipe through the external pipe, and then into the spray plate pipe through the support pipe and dispersed spray into the filter media box; the wastewater flows through the biological filter media filled in the filter media box, where it is pre-filtered to remove larger particulate impurities; after pre-filtration, the wastewater flows into the other side of the partition through the water inlet, and then the air pump is started to supply air to the installation pipe. The gas is dispersed and sprayed into the wastewater in the sedimentation chamber through multiple spray pipes to aerate the wastewater and increase the oxygen content of the wastewater, providing an aerobic environment for microorganisms; S4. Dual Fine Filtration and Drainage: Start the delivery pump to transport the aerated wastewater through the outlet pipe, connecting pipe, fixed pipe and hose to the filter box; the wastewater flows through the coarse filter cartridge and fine filter cartridge in the filter box for dual filtration to improve the filtration fineness; finally, the clean water after dual filtration is discharged through the drain pipe.

[0017] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0018] Beneficial effects: In this invention, the pretreatment mechanism allows wastewater to be pre-filtered by a biological filtration component after it is placed in the sedimentation chamber. This removes larger particulate impurities from the wastewater. After passing through the biological filtration component, the wastewater enters the other side of the partition through the water inlet, where it is aerated to increase the oxygen content in the wastewater. Then, the delivery pump is started to transport the wastewater through the outlet pipe, connecting pipe, fixed pipe, and flexible hose to the filter box, thereby achieving fine filtration treatment of the wastewater. In this invention, the sliding mechanism allows the filter box to be supported and installed using two mounting brackets. Furthermore, the mounting brackets and the U-shaped brackets provide horizontal sliding support for the installation box, thereby enabling a quick and stable connection between the installation box and the filter box. In this invention, the filter mechanism can achieve dual filtration of wastewater from pigment production by using coarse and fine filter cartridges installed in the filter box, thereby improving the fineness of wastewater filtration and greatly improving the cleanliness of the water discharged from the drain pipe. Furthermore, after the coarse filter cartridge and the fine filter cartridge are mounted on the docking ring, the limiting ring II can be used to press and position the fine filter cartridge by pressing the limiting ring I. Then, when the mounting box is connected to the filter box, the pressure tube can be inserted into the filter box and the limiting ring III can be pressed, thereby pressing the coarse filter cartridge. Therefore, stable installation and positioning of the coarse filter cartridge and the fine filter cartridge can be achieved.

[0019] This invention significantly optimizes aeration efficiency and wastewater treatment precision by employing an adaptive aeration nozzle structure based on a Ni-Ti composite shape memory alloy. This structure utilizes the thermal effect generated by the aeration airflow to drive the nozzle to bend and deform, thereby automatically adjusting the spray direction. This dynamically compensates for the uneven bubble distribution present in traditional fixed aeration, eliminating oxidation dead zones caused by differences in bubble distribution. Simultaneously, in conjunction with the integrated flow sensor within the air pump and the coordinated control of the water pump, the device can fine-tune the rotation of the spray plate based on real-time airflow signals, ensuring uniform distribution of the biological filter media and dynamic balanced aeration in synergy. This mechanism, combining thermal response self-regulation with fluid feedback linkage, effectively overcomes the efficiency loss caused by uneven bubble distribution in traditional fixed aeration methods, achieving refined and highly active treatment of pigment production wastewater.

[0020] This invention can effectively pre-treat wastewater during pigment production, effectively remove impurities and particles from the wastewater, aerate and oxygenate the wastewater, and facilitate the disassembly and assembly of the filter mechanism after fine filtration, making it easy to clean and maintain the filter mechanism. This structure is suitable for the general processing of various industrial wastewaters, overcoming the efficiency loss caused by uneven bubble distribution in traditional fixed aeration. Attached Figure Description

[0021] Figure 1 This is a first-view three-dimensional structural schematic diagram of the wastewater recovery device for pigment production provided in an embodiment of the present invention. Figure 2 This is a second-view three-dimensional structural schematic diagram of the wastewater recovery device for pigment production provided in an embodiment of the present invention. Figure 3 This is a three-dimensional cross-sectional schematic diagram of the filter box and mounting box of the wastewater recovery device for pigment production provided in an embodiment of the present invention. Figure 4 This is a cross-sectional view of the filter box and mounting box of the wastewater recovery device for pigment production provided in an embodiment of the present invention; Figure 5 This is a three-dimensional schematic diagram of the internal structure of the sedimentation chamber of the wastewater recovery device for pigment production provided in an embodiment of the present invention; Figure 6 This is a three-dimensional schematic diagram of the connection structure between the water injection pump and the spray plate pipe of the wastewater recovery device for pigment production provided in an embodiment of the present invention. Figure 7 This is a cross-sectional view of the sedimentation chamber of the wastewater recovery device for pigment production provided in an embodiment of the present invention; Figure 8 This is a three-dimensional schematic diagram of the air pump, mounting pipe, and multiple nozzle connection structure of the wastewater recovery device for pigment production provided in an embodiment of the present invention.

[0022] Figure label: 1. Load-bearing frame; 2. Sedimentation chamber; 3. Partition; 4. Overlapping ring; 5. Filter media box; 6. Biological filter media; 7. Support ring; 8. Mounting base plate; 9. Sloping panel; 10. Water inlet; 11. Water pump; 12. External connecting pipe; 13. Delivery pipe; 14. Support guide pipe; 15. Spray plate pipe; 16. Mounting pipe; 17. Spray pipe; 18. Air pump; 19. Filter screen; 20. Water outlet pipe; 21. Connecting pipe; 22. Fixing pipe; 23. Flexible hose; 24. Support ring 25. Plate; 26. Mounting bracket; 27. Filter box; 28. U-shaped frame; 29. ​​Slide rail; 30. Slide plate; 31. Mounting box; 32. Baffle; 33. Drain pipe; 34. Fixing ring; 35. Connecting ring; 36. Coarse filter cartridge; 37. Fine filter cartridge; 38. Limiting ring I; 39. Limiting ring II; 40. Limiting ring III; 41. Pressure pipe; 42. Positioning pipe; 43. Nut; 44. Locking plate; 45. Screw; 46. Rotary pressure head; 47. Conveying pump. Detailed Implementation

[0023] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0025] Example 1: Refer to Figure 1-8A recycling device includes a load-bearing frame 1, with a pretreatment mechanism mounted on top of the frame 1. The pretreatment mechanism is used to pre-sedimentate wastewater from pigment production. Specifically, the pretreatment mechanism includes a sedimentation chamber 2 fixedly mounted on top of the frame 1, with a partition 3 fixedly installed inside the chamber 2. A biological filter assembly for pre-treating the wastewater from pigment production is disposed on one side of the partition 3, and the biological filter assembly is connected to the inner wall of the sedimentation chamber 2. The biological filter assembly includes a retaining ring 4 fixedly mounted on one side of the partition 3, which is fixedly connected to the inner wall of the sedimentation chamber 2. A filter media box 5 is inserted through the retaining ring 4, and biological filter media 6 (which can be a composite material of volcanic rock and ceramsite or other materials) is disposed inside the filter media box 5. A support ring 7 is fixedly mounted on top of the filter media box 5, resting on the retaining ring 4. Inside the sedimentation chamber 2, a sloping panel 9 is fixedly installed below the biological filter assembly, and a water inlet 10 is opened at the bottom of the partition 3, so that the sewage filtered by the biological filter assembly can flow to the other side of the partition 3 through the water inlet 10. A rubber sealing ring is installed between the filter media box 5 and the overlapping ring 4.

[0026] like Figure 7 and Figure 8 As shown, an aeration assembly is also installed in the sedimentation chamber 2, located on the other side of the partition 3. The aeration assembly includes an installation pipe 16 fixedly installed in the sedimentation chamber 2. Multiple nozzles 17 are fixedly installed at equal intervals on the bottom inner wall of the installation pipe 16, with the bottom ends of the nozzles 17 extending into the sedimentation chamber 2. An air pump 18 is fixedly installed at the top of one side of the sedimentation chamber 2. The air outlet of the air pump 18 extends into the installation pipe 16 and is fixedly connected to the inner wall of the installation pipe 16. A filter screen 19 is installed on the suction end of the air pump 18. When wastewater flows to the other side of the partition 3, the air pump 18 is activated to supply air into the installation pipe 16. The gas is dispersed and sprayed into the sedimentation chamber 2 through the multiple nozzles 17, increasing the oxygen content in the wastewater and providing an aerobic environment for microorganisms.

[0027] like Figure 7As shown, a water injection pump 11 is fixedly installed on the other side of the sedimentation chamber 2. An external pipe 12 is fixedly installed on the suction end of the water injection pump 11 for conveying wastewater from pigment production. A conveying pipe 13 is fixedly installed on the outlet end of the water injection pump 11. A mounting base 8 is fixedly installed on the top of the other side of the sedimentation chamber 2. A support conduit 14 is fixedly installed on the top of the mounting base 8. The top end of the conveying pipe 13 extends into the support conduit 14 and is fixedly connected to the inner wall of the support conduit 14. A spray plate pipe 15 is also included. Both ends of the spray plate pipe 15 extend into the support conduit 14 and are fixedly connected to both ends of the support conduit 14, respectively. A bracket is fixedly installed on the top of the partition 3, and one side of the spray plate pipe 15 rests on the bracket. When the water injection pump 11 is started, the wastewater from pigment production is conveyed through the external pipe 12 into the conveying pipe 13, and then through the support conduit 14 into the spray plate pipe 15. The spray plate pipe 15 disperses and sprays the wastewater into the filter media box 5, allowing the wastewater to pass through the filter media box 5 quickly.

[0028] like Figure 7 As shown, multiple water outlet pipes 20 are fixedly installed at equal intervals on the inner wall of one side of the bottom of the sedimentation chamber 2. The bottom ends of the multiple water outlet pipes 20 extend to the bottom of the sedimentation chamber 2 and are fixedly connected to the same connecting pipe 21. A fixing pipe 22 is fixedly installed at the bottom end of the connecting pipe 21. The bottom end of the fixing pipe 22 extends to the bottom of the connecting pipe 21 and is fixedly installed with a flexible hose 23.

[0029] like Figure 3 and Figure 4 As shown, a support plate 24 is provided on the top of the load-bearing frame 1, and a sliding mechanism is provided on the top of the support plate 24. The sliding mechanism includes two mounting brackets 25 symmetrically fixedly installed on the top of the support plate 24, and the tops of the two mounting brackets 25 are fixedly connected to the bottom of the filter box 26. A U-shaped frame 27 is slidably connected through the two mounting brackets 25. It also includes two slide rails 28 symmetrically fixedly installed on the other side of the top of the support plate 24, and a slide plate 29 is slidably connected to the two slide rails 28. The slide plate 29 is fixedly installed on one side of the bottom of the mounting box 30. The two sides of the U-shaped frame 27 are fixedly connected to the two sides of the slide plate 29 respectively. The filter box 26 is supported and installed by the two mounting brackets 25. With the sliding cooperation between the mounting brackets 25 and the U-shaped frame 27, the mounting box 30 is horizontally slidably supported, realizing a quick and stable docking between the mounting box 30 and the filter box 26.

[0030] like Figure 4 As shown, the mounting box 30 is connected to the filter box 26. A drain pipe 32 is fixedly installed through the bottom inner wall of one side of the filter box 26. A transfer pump 46 is fixedly installed on the inner wall of one side of the mounting box 30. The suction end of the transfer pump 46 extends to the outside of the mounting box 30 and is fixedly connected to one end of the hose 23. Starting the transfer pump 46 can transport sewage through the outlet pipe 20, connecting pipe 21, fixed pipe 22 and hose 23 into the filter box 26.

[0031] This application can be used in the field of wastewater treatment technology, or in other fields applicable to this application.

[0032] Example 2: Reference Figure 1-4 A wastewater recovery device for pigment production is disclosed, which is applied to the field of wastewater treatment technology. A filtration mechanism is installed inside a filter box 26 for filtering wastewater from pigment production. The filtration mechanism includes a fixing ring 33 fixedly installed inside the filter box 26. A connecting ring 34 is fixedly installed on one side of the fixing ring 33. A first annular groove and a second annular groove are respectively opened on one side of the connecting ring 34. A coarse filter cartridge 35 is fitted into the first annular groove. The shape of the coarse filter cartridge 35 can be selected according to actual needs, such as cylindrical, square, or polygonal structures, to adapt to different installation spaces or filtration efficiency requirements. One side of the coarse filter cartridge 35 extends into the filter box 26. A fine filter cartridge 36 is fitted into the second annular groove, and one side of the fine filter cartridge 36 extends into the coarse filter cartridge 35. A limiting ring II 38 is fixedly installed inside the coarse filter cartridge 35, and a limiting ring I 37 is fixedly fitted onto the fine filter cartridge 36. The limiting ring II 38 is used to press and limit the limiting ring I 37. A limiting ring Ⅲ39 is fixedly mounted on the coarse filter cartridge 35. A baffle 31 is fixedly installed inside the mounting box 30. The output end of the delivery pump 46 passes through the baffle 31. A pressure pipe 40 is fixedly installed on one side of the baffle 31. One side of the pressure pipe 40 extends into the filter box 26 and contacts one side of the limiting ring Ⅲ39. After the coarse filter cartridge 35 and the fine filter cartridge 36 are clamped onto the docking ring 34, the limiting ring Ⅰ37 is pressed by the limiting ring Ⅱ38 to press and position the fine filter cartridge 36. When connecting the mounting box 30 to the filter box 26, the pressure pipe 40 is inserted into the filter box 26 and presses the limiting ring Ⅲ39 to press the coarse filter cartridge 35, thereby achieving stable installation and positioning of the coarse filter cartridge 35 and the fine filter cartridge 36.

[0033] Multiple positioning tubes 41 are rotatably connected at equal intervals on the mounting box 30. One end of the positioning tube 41 is fixedly connected to a nut 42. Multiple locking plates 43 are fixedly installed at equal intervals on the filter box 26. The locking plates 43 have a bayonet. A screw 44 is threaded through the nut 42. One end of the screw 44 passes through the bayonet and is fixedly installed with a rotating pressure head 45. One side of the rotating pressure head 45 is in close contact with one side of the locking plate 43. After the filter box 26 and the mounting box 30 are connected, the positioning tube 41 is rotated to pass the screw 44 through the bayonet. The screw 44 is rotated and driven by the thread transmission with the nut 42, which drives the rotating pressure head 45 to move closer to the locking plate 43 until the rotating pressure head 45 is in close contact with the locking plate 43, thus realizing a stable connection between the mounting box 30 and the filter box 26. At the same time, it realizes a stable limit on the coarse filter cartridge 35 and the fine filter cartridge 36. The coarse filter cartridge 35 can be a stainless steel mesh (pore size 0.5-1mm), and the fine filter cartridge 36 can be a PP microporous membrane (pore size 0.1-0.5mm).

[0034] It also includes an adaptive aeration nozzle structure. This adaptive aeration nozzle structure optimizes the bottom of the mounting pipe 16 and is linked to the nozzle 17 through a shape memory alloy and a flow sensor. The shape memory alloy is made of Ni-Ti composite material. When the airflow generates heat during aeration, causing the temperature to rise by ΔT, the nozzle bending angle θ = β * ΔT, where β is the response coefficient, thereby automatically adjusting the spray direction to compensate for the unevenness of bubbles in the wastewater after aeration. The compensated unevenness V' = V - (β * ΔT), where V' is the compensated unevenness and V is the original unevenness. The flow sensor is integrated into the air pump 18 and electrically connected to the water injection pump 11, monitoring the airflow in real time and feeding back to the water injection pump 11. The water injection pump 11 finely adjusts the rotation of the spray plate pipe 15 according to the airflow signal, so that the biological filter material 6 is evenly distributed to dynamically balance aeration, achieving precise treatment of uneven wastewater. This structure is suitable for the general processing of various industrial wastewaters, overcoming the efficiency loss caused by uneven bubbles in traditional fixed aeration.

[0035] This invention proposes a method for using a wastewater recovery device for pigment production, comprising the following steps: S1. First, after the coarse filter cartridge 35 and the fine filter cartridge 36 are clamped onto the docking ring 34, the fine filter cartridge 36 can be pressed and positioned by the limiting ring II 38 pressing the limiting ring I 37. Then, the mounting box 30 is docked with the filter box 26, the pressure tube 40 can be inserted into the filter box 26 and the limiting ring III 39 can be pressed, thereby pressing the coarse filter cartridge 35. Therefore, the coarse filter cartridge 35 and the fine filter cartridge 36 can be stably installed and positioned. S2. After the filter box 26 and the mounting box 30 are connected, the screw 44 is passed through the bayonet by rotating the positioning tube 41. Then, by rotating the screw 44, under the thread transmission action with the nut 42, the screw 44 can be moved. At this time, the rotating pressure head 45 can be moved closer to the locking plate 43 until the rotating pressure head 45 is in close contact with the locking plate 43. This can achieve a stable connection between the mounting box 30 and the filter box 26, and at the same time, it can achieve a stable limit on the coarse filter cartridge 35 and the fine filter cartridge 36. S3. By starting the water pump 11, the wastewater from pigment production is transported through the external pipe 12 to the conveying pipe 13. Then, through the support pipe 14, the wastewater can be transported to the spray plate pipe 15. The spray plate pipe 15 can then disperse and spray the wastewater into the filter media box 5. After the wastewater falls into the filter media box 5, the biological filter media 6 set in the filter media box 5 can pre-filter the wastewater when it comes into contact with the wastewater, removing larger particulate impurities in the wastewater. The biological filter media 6 is placed in the filter media box 5 in a packed form, which makes it easy to remove the biological filter media 6 for cleaning. At the same time, when the biological filter media 6 pre-filters and adsorbs the wastewater from pigment production, it can effectively reduce the filtration burden of the subsequent filtration components on the wastewater from pigment production. S4. After the sewage passes through the biological filter media 6, it can remove some of the microorganisms on the biological filter media 6. At this time, after the sewage flows through the water inlet 10 to the other side of the baffle 3, the air pump 18 can be started to supply air into the installation pipe 16. Then, through multiple nozzles 17, the gas can be dispersed and sprayed into the sedimentation chamber 2, thereby blowing air into the sewage, which can effectively increase the oxygen content in the sewage and provide an aerobic environment for microorganisms. S5. Starting the delivery pump 46 can transport wastewater through the outlet pipe 20, connecting pipe 21, fixed pipe 22 and hose 23 to the filter box 26. The coarse filter cartridge 35 and fine filter cartridge 36 installed in the filter box 26 can achieve dual filtration of wastewater from pigment production, thereby improving the fineness of wastewater filtration and greatly improving the cleanliness of the water discharged from the drain pipe 32.

[0036] Those skilled in the art should understand that the working principles and circuit connection methods of the water injection pump 11, air pump 18, and delivery pump 46 are all conventional technical means in this technical field. The specific selection, parameter configuration, and circuit connection of the above-mentioned pump equipment can be conventionally configured according to the standard design specifications in the prior art and combined with the actual working conditions. Specific implementation details will not be described here.

[0037] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A wastewater recovery device for pigment production, comprising a load-bearing frame (1) with a sedimentation chamber (2) fixedly installed on its top, characterized in that, include: A partition (3) is fixedly installed inside the sedimentation chamber (2). The partition (3) divides the sedimentation chamber (2) into a pretreatment chamber and an aeration chamber. A water inlet (10) is provided at the bottom of the partition (3). The biofiltration assembly includes a snap ring (4) fixedly installed in the pretreatment chamber, and a filter media box (5) is detachably disposed in the snap ring (4), and the filter media box (5) contains biofilter media (6). The aeration assembly includes an installation pipe (16) fixedly installed in the aeration chamber, with multiple spray pipes (17) connected to the bottom of the installation pipe (16), and an air pump (18) connected to the installation pipe (16) installed on one side of the sedimentation chamber (2). The filter box (26) is connected to the outlet pipe (20) at the bottom of the sedimentation chamber (2) via a connecting pipe (21). The filter box (26) is equipped with a coarse filter cartridge (35) and a fine filter cartridge (36), with the fine filter cartridge (36) nested inside the coarse filter cartridge (35). The wastewater is pretreated by the biological filtration component and then enters the aeration chamber through the water inlet (10). After aeration, it is pumped into the filter box (26) by the transfer pump (46) for double filtration.

2. The wastewater recovery device according to claim 1, characterized in that, The filter media box (5) is fixedly installed with a support ring (7) on top, and the support ring (7) is placed on the support ring (4). The sedimentation chamber (2) is installed with an inclined panel (9) located below the filter media box (5).

3. The wastewater recovery device according to claim 1, characterized in that, A water pump (11) is installed on one side of the sedimentation chamber (2). The water pump (11) is connected to a spray plate pipe (15) through a delivery pipe (13). The spray plate pipe (15) is located above the pretreatment chamber.

4. The wastewater recycling device according to claim 1, characterized in that, It also includes an installation box (30) which is detachably connected to the filter box (26). A delivery pump (46) is installed inside the installation box (30). The suction end of the delivery pump (46) is connected to the connecting pipe (21) through a hose (23), and the output end extends into the filter box (26). A fixing ring (33) is fixedly installed inside the filter box (26). A docking ring (34) is installed on one side of the fixing ring (33). The docking ring (34) has a first annular groove and a second annular groove that respectively accommodate the coarse filter cartridge (35) and the fine filter cartridge (36).

5. The wastewater recovery device according to claim 4, characterized in that, The coarse filter cartridge (35) is fixedly installed with a limiting ring II (38), and the fine filter cartridge (36) is fixedly fitted with a limiting ring I (37). The limiting ring II (38) presses against the limiting ring I (37) to achieve the positioning of the fine filter cartridge (36).

6. The wastewater recovery device according to claim 5, characterized in that, A limiting ring Ⅲ (39) is fixedly fitted on the coarse filter cartridge (35), and a pressure tube (40) is fixedly installed inside the mounting box (30). The pressure tube (40) extends into the filter box (26) to press the limiting ring Ⅲ (39) to achieve the positioning of the coarse filter cartridge (35).

7. The wastewater recovery device according to claim 1, characterized in that, It also includes a sliding mechanism, which comprises: A tray (24) is fixedly installed on the load-bearing frame (1); Two mounting brackets (25) are symmetrically installed on the top of the tray (24), and the filter box (26) is fixedly installed on the mounting brackets (25); A U-shaped frame (27) is slidably connected to two mounting brackets (25), and the two sides of the U-shaped frame (27) are fixedly connected to the mounting box (30).

8. The wastewater recovery device according to claim 7, characterized in that, It also includes an adaptive aeration nozzle structure, which is installed at the bottom of the mounting pipe (16) and linked with the nozzle (17) by a shape memory alloy, and the shape memory alloy is a Ni-Ti composite material.

9. The wastewater recovery device according to claim 1, characterized in that, Multiple positioning tubes (41) are rotatably connected to the mounting box (30), and a nut (42) is connected to one end of each positioning tube (41). Multiple locking plates (43) are fixedly installed on the filter box (26). A screw (44) passes through the locking plate (43) and is threadedly connected to the nut (42). A rotating pressure head (45) that is in close contact with the locking plate (43) is installed at the end of the screw (44).

10. The method of using the wastewater recovery device for pigment production according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Filter cartridge installation and positioning: The coarse filter cartridge (35) and the fine filter cartridge (36) are clamped on the docking ring (34), and the limiting ring II (38) is used to press the limiting ring I (37) to position the fine filter cartridge (36); then the mounting box (30) is docked with the filter box (26), so that the pressure tube (40) is inserted into the filter box (26) and the limiting ring III (39) is pressed to position the coarse filter cartridge (35), thus completing the stable installation of the coarse filter cartridge (35) and the fine filter cartridge (36); S2, Locking the box: After the filter box (26) and the mounting box (30) are connected, rotate the positioning tube (41) to make the screw (44) pass through the bayonet; then rotate the screw (44), and drive the screw (44) to move through the thread transmission between the screw and the nut (42), thereby driving the rotating pressure head (45) to approach the locking plate (43) until it is in close contact, so as to realize the stable connection between the mounting box (30) and the filter box (26), and form a stable limit on the coarse filter cartridge (35) and the fine filter cartridge (36); S3. Wastewater pretreatment and aeration: Start the water injection pump (11) to transport the wastewater from pigment production to the conveying pipe (13) through the external pipe (12), and then through the support pipe (14) into the spray plate pipe (15) and dispersed spray into the filter media box (5); the wastewater flows through the biological filter media (6) filled in the filter media box (5) and is pre-filtered by the biological filter media (6) to remove larger particulate impurities; after pre-filtration, the wastewater flows into the other side of the partition (3) through the water inlet (10), and then the air pump (18) is started to supply air to the installation pipe (16). The gas is dispersed and sprayed into the wastewater in the sedimentation chamber (2) through multiple spray pipes (17) to aerate and increase the oxygen content of the wastewater, providing an aerobic environment for microorganisms; S4. Dual fine filtration and drainage: Start the delivery pump (46) to transport the aerated wastewater through the outlet pipe (20), connecting pipe (21), fixed pipe (22) and hose (23) to the filter box (26); the wastewater flows through the coarse filter cartridge (35) and fine filter cartridge (36) in the filter box (26) for dual filtration to improve the filtration fineness; finally, the clean water after dual filtration is discharged through the drain pipe (32).

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