Composite filtration treatment equipment for high-concentration pigment wastewater

Abstract

This utility model discloses a composite filtration treatment device for high-concentration pigment wastewater, applied in the field of wastewater treatment technology. Through a two-stage treatment process combining sedimentation and sieving, this utility model significantly improves the treatment effect of pigment wastewater, efficiently trapping fine particles and overcoming the shortcomings of traditional single filtration methods that have low removal rates for small particles, such as organic impurities. The unique pluggable filter plate design makes maintenance and operation more convenient, greatly reducing equipment downtime. This composite treatment method ensures treatment efficiency while also considering the practicality and economy of the equipment. The device cleverly utilizes the kinetic energy of the wastewater itself to drive the cleaning mechanism, effectively preventing large pigment particles, such as lime and inorganic salts, from accumulating on the filter screen surface. This self-cleaning design not only avoids the frequent clogging problems of traditional pretreatment equipment but also completely eliminates external power consumption, significantly reducing maintenance costs and ensuring long-term unobstructed filtration.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment technology, and specifically relates to a composite filtration treatment device for high-concentration pigment wastewater. Background Technology

[0002] Pigments are substances that can color objects. Pigments can be soluble or insoluble, and can be inorganic or organic. Inorganic pigments are generally mineral substances. Humans have known how to use inorganic pigments for a long time, using colored soil and minerals to paint on rock walls and smear their bodies. Organic pigments are generally derived from plants and marine animals, such as indigo, gamboge, and purple extracted from shellfish in ancient Rome. High-concentration pigment wastewater filtration and treatment equipment is an industrial device specifically designed to treat wastewater containing high concentrations of solid pigment particles. It mainly consists of an inlet system, a filtration unit, and a drainage device, and is suitable for the pretreatment of production wastewater in industries such as coatings, inks, and printing and dyeing.

[0003] However, traditional high-concentration pigment wastewater treatment equipment has low efficiency in retaining small pigment particles and is difficult to effectively remove fine particles smaller than 10μm. The filter unit is prone to clogging and requires frequent shutdowns for cleaning and maintenance. At the same time, the filter screen is easily clogged by large pigment particles such as lime and inorganic salts, requiring frequent shutdowns for manual cleaning.

[0004] To address the problems mentioned in the background above, a composite filtration treatment device for high-concentration pigment wastewater is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a composite filtration treatment device for high-concentration pigment wastewater, which has the advantages of secondary treatment and wastewater-driven cleaning.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a composite filtration treatment device for high-concentration pigment wastewater, comprising a shell, a sedimentation chamber bolted to the left side of the bottom inside the shell, a sedimentation pipe connected to the top of the sedimentation chamber, a sedimentation cavity connected to the top of the sedimentation pipe, a guide plate fixedly connected to the bottom of the inner wall of the sedimentation cavity, a guide hole penetrating through the top of the guide plate, a connecting pipe connected to the right side of the sedimentation pipe, a filter cover connected to the bottom of the connecting pipe, a filter box threaded to the bottom of the filter cover, a slot provided on the inner wall of the filter box, a locking block slidably connected inside the slot, a filter plate bolted to the inner side of the locking block, and a cleaning mechanism provided at the top inside the shell.

[0007] Using the above technical solution: After filtering out large particles, the wastewater enters the settling chamber. The guide plate at the bottom of the settling chamber and the reduced inner diameter of the chamber slow the water flow, guiding it downwards through the guide holes in the guide plate. Under the tilting action of the guide plate, the water slides towards the settling pipe and falls into the settling bin at the bottom for temporary storage. Small particles settle at the bottom of the settling bin. After treatment in the settling chamber, the wastewater at the top flows into the filter cover through the connecting pipe on the right side of the settling pipe, and then into the filter box below. The grooves and blocks on the inner wall of the filter box cooperate to fix the filter plate inside the box. As the water flows through the filter plate, residual small particles of pigment are trapped by the filter plate, further purifying the water before it flows out for further treatment. The threaded filter cover and filter box are easy to disassemble periodically. The filter plates can be quickly replaced by pulling the slotted blocks to avoid clogging and affecting filtration efficiency. The sedimentation status of the sedimentation chamber can be observed from the outside to drain the wastewater inside the sedimentation chamber and clean the sedimentation chamber. The two-stage treatment process combining sedimentation and screening significantly improves the treatment effect of pigment wastewater, efficiently intercepting fine particles and overcoming the shortcomings of traditional single filtration in removing small particles, such as organic impurities, with low removal rates. The unique plug-in filter plate design makes maintenance and operation more convenient and greatly reduces equipment downtime. This composite treatment method ensures treatment efficiency while taking into account the practicality and economy of the equipment.

[0008] The present invention is further configured such that the cleaning mechanism includes a top tube, which is bolted to the top inside the outer shell. A rotating shaft is rotatably connected to the top inside the top tube. A blade is fixedly sleeved on the surface of the rotating shaft, and a brush is fixedly sleeved on the bottom of the rotating shaft. A filter screen is fixedly sleeved on the bottom of the inner wall of the top tube. An inlet pipe is connected to the top right side of the top tube, and the surface of the inlet pipe penetrates the top right side of the outer shell. An adsorption mechanism is provided at the bottom of the top tube.

[0009] The above technical solution employs a cleaning mechanism. High-concentration pigment wastewater enters the top pipe through the inlet pipe. As the wastewater flows, it impacts the blades fixedly attached to the rotating shaft. The blades, subjected to the impact of the water flow, drive the shaft to rotate. As the shaft rotates, the brush fixedly attached to its bottom also rotates synchronously. A filter screen is located at the bottom of the top pipe's inner wall. The rotating brush contacts the filter screen surface, continuously cleaning it and removing pigment particles adhering to the screen. This prevents the filter screen from becoming clogged and affecting the filtration effect. After the filter screen initially filters out large particles from the wastewater, the filtered wastewater flows out from the bottom of the top pipe and enters the subsequent adsorption mechanism for further treatment. The cleaning mechanism cleverly utilizes the wastewater's own kinetic energy to effectively prevent large pigment particles, such as lime and inorganic salts, from accumulating on the filter screen surface. This self-cleaning design not only avoids the frequent clogging problems of traditional pretreatment equipment but also completely eliminates external power consumption, significantly reducing maintenance costs. It ensures long-term unobstructed filtration, significantly improving the stability and continuity of high-concentration pigment wastewater pretreatment and creating favorable conditions for subsequent treatment processes.

[0010] The present invention is further configured such that the adsorption mechanism includes a middle tube, which is connected to the bottom of the top tube and the bottom of the middle tube is connected to the top of the settling chamber. The top and bottom of the inner wall of the middle tube are fixedly sleeved with perforated plates, and activated carbon is provided on the opposite side of the two perforated plates.

[0011] The above technical solution involves an adsorption mechanism that initially filters large particles from the wastewater through a filter screen. The filtered wastewater then flows out from the bottom of the top pipe and enters the middle pipe, permeating from top to bottom through the activated carbon layer. The porous structure of the activated carbon adsorbs small molecule organic pigments in the wastewater, such as azo dye molecules and pigment intermediates. The adsorbed wastewater then flows out from the bottom and enters the subsequent conical settling chamber for small particle filtration. When the activated carbon becomes saturated, it is determined by monitoring the effluent color and refilling with new carbon. The adsorption mechanism avoids interfering with the subsequent small particle filtration efficiency and forms a series treatment process with the preceding and following structures, without affecting the independence of their respective functions.

[0012] The present invention is further configured such that the bottom of the settling chamber is connected to a drain pipe, and the surface of the drain pipe penetrates the left side of the bottom of the outer shell; the bottom of the filter box is connected to an outlet pipe, and the surface of the outlet pipe penetrates the right side of the bottom of the outer shell.

[0013] The above technical solution is adopted: by setting up a drain pipe and an outlet pipe, the drain pipe can discharge the wastewater with small particles settled and accumulated in the sedimentation tank, and the discharge is controlled by a valve. The outlet pipe allows the water filtered by the equipment to flow out for further treatment.

[0014] The present invention is further provided that a sealing ring is fitted onto the bottom of the surface of the filter cover.

[0015] The above technical solution, by setting a sealing ring and using an interference fit, has a dynamic sealing function, which can prevent wastewater leakage.

[0016] The present invention is further configured such that the angle of the blade is set to be inclined at 30 degrees with the inlet pipe.

[0017] The above technical solution is adopted: by setting the angle to 30 degrees, the water flow can flow smoothly along the tilt direction of the blades, avoiding excessive obstruction to the water inlet and ensuring a stable water inlet flow rate. This angle can convert the kinetic energy of the water inlet into the rotational kinetic energy of the blades, which meets the needs of the brush to clean the filter screen.

[0018] The present invention is further configured such that the top and bottom right sides of the front of the outer casing are rotatably connected by hinges.

[0019] The above technical solution allows for convenient inspection and maintenance of the equipment's interior by incorporating a door.

[0020] The present invention is further provided with a transparent window on the left side of the bottom front of the outer casing.

[0021] The above technical solution allows for easy observation of the interior of the settling chamber by incorporating a transparent window.

[0022] The present invention is further provided that a base is bolted to the bottom edges of the outer casing on both sides.

[0023] The above technical solution, by setting up a base, can stabilize the equipment.

[0024] In summary, this utility model has the following beneficial effects:

[0025] 1. This utility model significantly improves the treatment effect of pigment wastewater through a two-stage treatment process combining sedimentation and screening. It efficiently intercepts fine particles, overcoming the shortcomings of traditional single filtration in removing small particles, such as organic impurities, with low removal rate. The unique plug-in filter plate design makes maintenance and operation more convenient and greatly reduces equipment downtime. This composite treatment method ensures treatment efficiency while taking into account the practicality and economy of the equipment.

[0026] 2. This utility model cleverly utilizes the kinetic energy of the wastewater itself to drive the cleaning mechanism, effectively preventing large particles of pigment, such as lime and inorganic salts, from accumulating on the filter screen surface. This self-cleaning design not only avoids the problem of frequent clogging in traditional pretreatment equipment, but also completely eliminates external power consumption, significantly reducing maintenance costs and ensuring that the filter remains unobstructed for a long time. It significantly improves the stability and continuity of the pretreatment of high-concentration pigment wastewater, creating favorable conditions for subsequent treatment processes. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a front sectional view of the overall structure of this utility model;

[0029] Figure 3 This is a utility model Figure 2 Enlarged schematic diagram of the structure at point A;

[0030] Figure 4 This is a utility model Figure 2 Enlarged schematic diagram of the structure at point B;

[0031] Figure 5 This is a top sectional view of a partial structure of this utility model;

[0032] Figure 6 This is a partial structural side sectional view of this utility model.

[0033] Reference numerals in the attached drawings: 1. Outer shell; 2. Settling chamber; 3. Settling pipe; 4. Settling cavity; 5. Guide plate; 6. Guide hole; 7. Connecting pipe; 8. Filter cover; 9. Filter box; 10. Slot; 11. Block; 12. Filter plate; 13. Top pipe; 14. Middle pipe; 15. Rotating shaft; 16. Blade; 17. Brush; 18. Filter screen; 19. Inlet pipe; 20. Outlet pipe; 21. Perforated plate; 22. Activated carbon; 23. Drain pipe; 24. Sealing ring; 25. Door; 26. Transparent window; 27. Base. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings.

[0035] Example 1:

[0036] refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 A composite filtration treatment device for high-concentration pigment wastewater includes an outer shell 1. A settling chamber 2 is bolted to the bottom left side of the inner shell 1. A settling pipe 3 is connected to the top of the settling chamber 2. A settling cavity 4 is connected to the top of the settling pipe 3. A guide plate 5 is fixedly connected to the bottom of the inner wall of the settling cavity 4. The guide plate 5 is made of PPH material. The material is anti-aging and lightweight. The tilt angle is 15°. A guide hole 6, 5-8mm in diameter, is provided at the top of the guide plate 5, slowing the water flow by 0.2-0.3m / s. A connecting pipe 7 connects to the right side of the settling pipe 3, and a filter cover 8 connects to the bottom of the connecting pipe. A filter box 9, made of 316 stainless steel, is threaded to the bottom of the filter cover 8. A slot 10 is provided on the inner wall of the filter box 9, and a locking block 11 is slidably connected inside the slot 10. A filter plate 12, with a pore size of 10-30μm and made of 316 stainless steel mesh, is bolted to the inside of the locking block 11, trapping lime, inorganic salts, organic impurities, etc. A cleaning mechanism is provided at the top inside the outer shell 1. After filtering out large particles, the wastewater enters the settling chamber 4. The guide plate 5 at the bottom of the settling chamber 4 and the inner diameter of the bottom of the settling chamber 4 decrease, slowing the water flow and reducing the water flow rate. Guided downwards by the guide holes 6 of the guide plate 5, the water slides towards the settling pipe 3 under the tilting action of the guide plate 5, and falls into the settling chamber 2 at the bottom for temporary storage. Small particles settle at the bottom of the settling chamber 2. After being treated by the settling chamber 4, the wastewater at the top flows into the filter cover 8 through the connecting pipe 7 on the right side of the settling pipe 3, and then enters the filter box 9 below. The slot 10 and the locking block 11 on the inner wall of the filter box 9 cooperate to fix the filter plate 12 in the box. When the water flows through the filter plate 12, the residual small particles of pigment are intercepted by the filter plate 12, and the water flows out for further purification and subsequent treatment. The threaded connection between the filter cover 8 and the filter box 9 makes it easy to disassemble periodically. The filter plate 12 can be quickly replaced by pulling the locking block 11 through the slot 10 to avoid clogging and affecting the filtration efficiency. The sedimentation of the settling chamber 2 can be observed from the outside to drain the wastewater inside the settling chamber 2 and clean the settling chamber 2.

[0037] refer to Figure 1 , Figure 2 The bottom of the settling chamber 2 is connected to a drain pipe 23, and the surface of the drain pipe 23 penetrates the left side of the bottom of the outer shell 1. The bottom of the filter box 9 is connected to an outlet pipe 20, and the surface of the outlet pipe 20 penetrates the right side of the bottom of the outer shell 1. By setting up the drain pipe 23 and the outlet pipe 20, the drain pipe 23 can discharge the wastewater with small particles settled and accumulated in the settling chamber 2, and the discharge is controlled by a valve. The outlet pipe 20 can allow the filtered water to flow out for subsequent treatment.

[0038] refer to Figure 2 , Figure 5 The bottom of the filter cover 8 is fitted with a sealing ring 24. By setting the sealing ring 24 and fitting it with an interference fit, it has a dynamic sealing function to prevent wastewater leakage. The cross-sectional diameter is 5mm, and the material is fluororubber, which is resistant to pigment solvent corrosion. The sealing pressure is ≥0.1MPa.

[0039] refer to Figure 1 Doors 25 are connected to the top and bottom right sides of the front of the outer casing 1 via hinges. The presence of doors 25 facilitates the inspection and maintenance of the equipment's interior.

[0040] refer to Figure 1 A transparent window 26 is provided on the left side of the bottom front of the outer shell 1, which allows for easy observation of the interior of the settling chamber 2.

[0041] refer to Figure 1 , Figure 2 The bottom edges of the outer casing 1 are bolted with bases 27, which can stabilize the device.

[0042] Example 2:

[0043] refer to Figure 2 , Figure 3 , Figure 6A composite filtration treatment device for high-concentration pigment wastewater includes a cleaning mechanism comprising a top pipe 13, which is bolted to the top inside the outer casing 1. The top pipe 13 is made of 316 stainless steel. A rotating shaft 15 is rotatably connected to the top inside the top of the top pipe 13. Blades 16 are fixedly sleeved on the surface of the rotating shaft 15, and a brush 17 is fixedly sleeved on the bottom of the rotating shaft 15. A filter screen 18 is fixedly sleeved on the bottom of the inner wall of the top pipe 13. An inlet pipe 19 is connected to the top right side of the top pipe 13, and the surface of the inlet pipe 19 penetrates the top right side of the outer casing 1. An adsorption mechanism is provided at the bottom of the top pipe 13. High-concentration pigment wastewater enters the interior of the top pipe 13 through the inlet pipe 19. When the wastewater... When the water flows, it impacts the blades 16 fixedly sleeved on the surface of the rotating shaft 15. After being impacted by the water flow, the blades 16 drive the rotating shaft 15 to rotate. As the rotating shaft 15 rotates, the brush 17 fixedly sleeved at its bottom also rotates synchronously. There is a filter screen 18 at the bottom of the inner wall of the top pipe 13. The rotating brush 17 will contact the surface of the filter screen 18 to continuously clean the filter screen 18, removing the pigment particles attached to the surface of the filter screen 18, and preventing the filter screen 18 from being blocked and affecting the filtration effect. After the filter screen 18 initially filters out large particles of wastewater, the filtered wastewater will flow out from the bottom of the top pipe 13 and enter the subsequent adsorption mechanism for further treatment.

[0044] refer to Figure 2 , Figure 3 The adsorption mechanism includes a central tube 14, which is connected to the bottom of the top tube 13 and the bottom of the central tube 14 is connected to the top of the settling chamber 4. The top and bottom of the inner wall of the central tube 14 are fixedly fitted with perforated plates 21. Activated carbon 22 is provided on the opposite side of the two perforated plates 21. The activated carbon 22 has a particle size of 20-40 mesh columnar activated carbon. Through the adsorption mechanism, large particles of wastewater are initially filtered by the filter screen 18. The filtered wastewater flows out from the bottom of the top tube 13 and enters the interior of the central tube 14. It permeates through the activated carbon 22 layer from top to bottom. The porous structure of the activated carbon 22 adsorbs small molecule organic pigments in the wastewater, such as azo dye molecules and pigment intermediates. The adsorbed wastewater flows out from the bottom and enters the subsequent conical settling chamber 4 for small particle filtration. When the activated carbon 22 is saturated, it is judged by the effluent color monitoring and new carbon is refilled. The adsorption mechanism avoids interfering with the subsequent small particle filtration efficiency and forms a series treatment process with the front and rear structures without affecting the independence of their respective functions.

[0045] refer to Figure 2 , Figure 3 , Figure 6 The angle of the blade 16 is set to be 30 degrees with the inlet pipe 19. By setting the angle to 30 degrees, the water flow can flow smoothly along the tilt direction of the blade 16, avoiding excessive obstruction to the water inlet and ensuring a stable water inlet flow rate. This angle can convert the kinetic energy of the water inlet into the rotational kinetic energy of the blade 16, which meets the cleaning needs of the brush 17 for the filter screen 18.

[0046] All internal pipe connections are flange connections, which allows for easy disassembly and replacement of filter elements.

[0047] Brief description of the usage process: After filtering out large particles, the wastewater enters the settling chamber 4. The guide plate 5 at the bottom of the settling chamber 4 and the inner diameter of the bottom of the settling chamber 4 are reduced, slowing down the water flow speed. The water flow is guided downwards along the guide holes 6 of the guide plate 5 and slides towards the settling pipe 3 under the tilting action of the guide plate 5. After falling into the settling bin 2 at the bottom of the settling pipe 3, small particles settle at the bottom of the settling bin 2. After being treated by the settling chamber 4, the wastewater at the top flows into the filter cover 8 through the connecting pipe 7 on the right side of the settling pipe 3, and then into the filter box 9 below. The slot 10 on the inner wall of the filter box 9 cooperates with the locking block 11 to fix the filter plate 12 in the box. When the water flows through the filter plate 12, the residual small particles of pigment are intercepted by the filter plate 12. After further purification, the water flows out for subsequent treatment. The threaded connection between the filter cover 8 and the filter box 9 makes it easy to disassemble periodically. The filter can be quickly replaced by pulling the locking block 11 through the slot 10. Plate 12 prevents clogging and affects filtration efficiency. The sedimentation status of sedimentation chamber 2 can be observed from the outside to drain the wastewater inside sedimentation chamber 2 and clean sedimentation chamber 2. High-concentration pigment wastewater enters the top pipe 13 through inlet pipe 19. When the wastewater flows, it will impact the blades 16 fixedly sleeved on the surface of the rotating shaft 15. After the blades 16 are impacted by the water flow, they drive the rotating shaft 15 to rotate. As the rotating shaft 15 rotates, the brush 17 fixedly sleeved at its bottom also rotates synchronously. There is a filter screen 18 at the bottom of the inner wall of the top pipe 13. The rotating brush 17 will contact the surface of the filter screen 18 to continuously clean the filter screen 18, sweeping off the pigment particles attached to the surface of the filter screen 18, preventing the filter screen 18 from being clogged and affecting the filtration effect. After the filter screen 18 initially filters out large particles of wastewater, the filtered wastewater will flow out from the bottom of the top pipe 13 and enter the subsequent adsorption mechanism for further treatment.

[0048] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.

[0049] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A composite filtering treatment device for high-concentration pigment wastewater, comprising a shell (1), characterized in that: A settling chamber (2) is bolted to the left side of the bottom inside the outer shell (1). A settling pipe (3) is connected to the top of the settling chamber (2). A settling cavity (4) is connected to the top of the settling pipe (3). A guide plate (5) is fixedly connected to the bottom of the inner wall of the settling cavity (4). A guide hole (6) is opened through the top of the guide plate (5). A connecting pipe (7) is connected to the right side of the settling pipe (3). A filter cover (8) is connected to the bottom of the connecting pipe. A filter box (9) is threaded to the bottom of the filter cover (8). A slot (10) is provided on the inner wall of the filter box (9). A locking block (11) is slidably connected inside the slot (10). A filter plate (12) is bolted to the inner side of the locking block (11). A cleaning mechanism is provided at the top inside the outer shell (1).

2. The complex filtering treatment apparatus for high-concentration pigment wastewater according to claim 1, characterized in that: The cleaning mechanism includes a top tube (13), which is bolted to the top inside the outer shell (1). A rotating shaft (15) is rotatably connected to the top inside the top tube (13). A blade (16) is fixedly sleeved on the surface of the rotating shaft (15). A brush (17) is fixedly sleeved on the bottom of the rotating shaft (15). A filter screen (18) is fixedly sleeved on the bottom of the inner wall of the top tube (13). An inlet pipe (19) is connected to the top right side of the top tube (13), and the surface of the inlet pipe (19) penetrates the top right side of the outer shell (1). An adsorption mechanism is provided at the bottom of the top tube (13).

3. The complex filtering treatment apparatus for high-concentration pigment wastewater according to claim 2, characterized in that: The adsorption mechanism includes a middle tube (14), which is connected to the bottom of the top tube (13) and the bottom of the middle tube (14) is connected to the top of the settling chamber (4). The top and bottom of the inner wall of the middle tube (14) are fixedly fitted with perforated plates (21), and activated carbon (22) is provided on the opposite side of the two perforated plates (21).

4. The complex filtering treatment apparatus for high-concentration pigment wastewater according to claim 1, characterized in that: The bottom of the settling chamber (2) is connected to a drain pipe (23), and the surface of the drain pipe (23) penetrates the left side of the bottom of the outer shell (1). The bottom of the filter box (9) is connected to an outlet pipe (20), and the surface of the outlet pipe (20) penetrates the right side of the bottom of the outer shell (1).

5. The complex filtering treatment apparatus for high-concentration pigment wastewater according to claim 1, characterized in that: A sealing ring (24) is fitted onto the bottom of the surface of the filter cover (8).

6. The complex filtering treatment apparatus for high-concentration pigment wastewater according to claim 2, characterized in that: The angle of the blade (16) is set to be 30 degrees inclined with the inlet pipe (19).

7. The complex filtering treatment apparatus for high-concentration pigment wastewater according to claim 1, characterized in that: The top and bottom right sides of the front of the outer casing (1) are connected by hinges to doors (25).

8. The complex filtering treatment apparatus for high-concentration pigment wastewater according to claim 1, characterized in that: A transparent window (26) is provided on the left side of the bottom front of the outer casing (1).

9. The complex filtering treatment apparatus for high-concentration pigment wastewater according to claim 1, characterized in that: The bottom edges of the outer casing (1) are bolted with bases (27).

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