Energy-saving and environment-friendly textile wastewater treatment equipment

Abstract

The invention belongs to the technical field of printing and dyeing wastewater treatment, and particularly relates to energy-saving and environment-friendly textile wastewater treatment equipment which comprises a purification cylinder, two three-phase separators are fixedly connected to the interior of the purification cylinder; the tops of the two three-phase separators are fixedly connected with gas guide pipes; the top of the purification cylinder is fixedly connected with an overflow pipe; the top surface of the purification cylinder is fixedly connected with a gas-liquid separation tank; the gas guide pipe extends into the gas-liquid separation tank, and activated carbon is arranged in the gas-liquid separation tank; a graphite column is mounted on the bottom surface of the purification cylinder; a plurality of uniformly arranged through holes I are formed in the end surface of the graphite column; a plurality of uniformly arranged through holes II are formed in the side surface of the graphite column, and the graphite column and the through holes I and the through holes II in the surface of the graphite column are arranged, so that the printing and dyeing wastewater entering the purification cylinder is heated, and the temperature in the purification cylinder can still be kept at a temperature suitable for microbial growth in winter; further, the decomposition efficiency of the biological sludge inside is ensured.

Description

An energy-saving and environmentally friendly textile wastewater treatment equipment Technical Field

[0001] This invention belongs to the field of textile dyeing wastewater treatment technology, specifically an energy-saving and environmentally friendly textile wastewater treatment device. Background Technology

[0002] Dyeing and printing wastewater refers to the waste liquid generated during the production process of the textile industry. It is mainly generated in processing steps such as desizing, scouring, bleaching, mercerizing, dyeing, and printing. It contains dyes, sizing agents, auxiliaries, oils, acids, alkalis, fiber impurities, and inorganic salts. If it is discharged directly without treatment, it will cause serious water pollution problems. Therefore, dyeing and printing wastewater needs to be deeply purified before discharge to minimize the environmental impact of the final discharged wastewater.

[0003] Existing technologies for purifying dyeing and printing wastewater mainly involve pretreatment and biochemical treatment. The specific process is as follows: In the pretreatment stage, suspended solids, some colloidal substances, and recalcitrant colored substances in the dyeing and printing wastewater are removed through methods such as coagulation sedimentation, flotation, and adsorption. Subsequently, the pretreated wastewater still needs to undergo biochemical treatment, which involves degrading organic matter in the wastewater through methods such as activated sludge, biological contact oxidation, and hydrolysis acidification, so that the wastewater can finally meet the discharge standards.

[0004] In the aforementioned technologies, the biochemical treatment of dyeing and printing wastewater mainly utilizes the metabolism of microorganisms to degrade organic pollutants in the wastewater, thereby purifying the water. However, the growth and reproduction of microorganisms, which are the main force in purification, are closely related to water quality and ambient temperature. The pretreatment stage of wastewater can only ensure that the pH of the water meets the survival needs of microorganisms. This leads to a decrease in the metabolism of microorganisms in winter and in cold regions, which in turn affects the degradation of organic matter in the wastewater.

[0005] Therefore, the present invention provides an energy-saving and environmentally friendly textile wastewater treatment device. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: An energy-saving and environmentally friendly textile wastewater treatment device, comprising a purification cylinder; two three-phase separators are fixedly connected inside the purification cylinder; air guide pipes are fixedly connected to the top of each of the two three-phase separators; an overflow pipe is fixedly connected to the top of the purification cylinder; a gas-liquid separation tank is fixedly connected to the top surface of the purification cylinder; the air guide pipes extend into the gas-liquid separation tank, and activated carbon is disposed inside the gas-liquid separation tank; a graphite column is installed on the bottom surface of the purification cylinder; multiple uniformly arranged through holes I are opened on the end face of the graphite column; multiple uniformly arranged through holes II are opened on the side surface of the graphite column; the through holes I and through holes II are staggered and do not communicate with each other; a gas heat exchanger is disposed on one side of the purification cylinder; the gas heat exchanger is connected to the gas-liquid separation tank via a conduit, and the inlet and outlet ends of the gas heat exchanger are connected to the through holes II via connecting components; an inlet pipe is installed at the bottom of the purification cylinder.

[0008] Preferably, the graphite column has limiting grooves on both its top and bottom surfaces, and the limiting grooves are arranged in a ring shape; the inner wall of the purification cylinder is fixedly connected to the top surface of the graphite column with a limiting ring, and the limiting ring is adapted to the limiting groove; the bottom of the purification tower is provided with a bottom cover, and the bottom cover is fixed to the purification cylinder with bolts; graphite gaskets are provided between the limiting ring and the bottom cover and the limiting groove; the bottom of the purification cylinder is fixedly connected to a support frame, and the bottom cover is slidably connected to the support frame.

[0009] Preferably, the water inlet pipe is slidably connected to the bottom cover; a support plate is fixedly connected to the top surface of the water inlet pipe; a plurality of evenly arranged sliding rods are fixedly connected to the bottom surface of the support plate, and the sliding rods are slidably connected to the bottom cover; a nut is threadedly connected to the bottom of the sliding rod; a sealing ring is fixedly connected to the bottom surface of the support plate, and the sliding rod is located inside the sealing ring.

[0010] Preferably, a pair of support plates are mounted on the surface of the support frame; the two support plates are symmetrically arranged about the water inlet pipe; a pair of symmetrically arranged limiting plates are slidably connected to the top surface of each of the two support plates, and the distance between the pair of limiting plates is consistent with the diameter of the graphite column; a magnet is embedded at the end of each pair of limiting plates that is close to each other, and the pair of magnets attract each other.

[0011] Preferably, both support plates are slidably connected to the support frame; both sides of the two support plates are fixedly connected to a connecting plate; the surfaces of the two connecting plates are threaded with threaded rods; a toothed ring is rotatably connected to the bottom of the support frame, and the toothed ring is driven by a servo motor; the bottom of the threaded rod is rotatably connected to the support frame, and the bottom of the threaded rod is engaged with the toothed ring.

[0012] Preferably, each of the two connecting plates is rotatably connected to a sleeve on the side away from each other, and the two sleeves are staggered; a sliding plate is slidably connected inside the sleeve; and each of the two connecting plates has a through groove at the corresponding position of the two sliding plates.

[0013] Preferably, the connecting assembly includes a pair of partitions; the two partitions are fixedly connected to the inner wall of the purification cylinder, and the partitions are perpendicular to the second through hole; the side surface of the graphite column has a slot at the corresponding position of the partition, and the slot extends to the top surface of the graphite column; the slot is adapted to the partition, and the slot is not connected to the first through hole and the second through hole; the outer surface of the purification cylinder is fixedly connected to both ends of the second through hole with water injection pipes, and the two water injection pipes are respectively connected to the inlet and outlet of the gas heat exchanger.

[0014] Preferably, a sealing gasket is fixedly connected to the end of the partition away from the inner wall of the purification cylinder; both the partition and the sealing gasket are hollow and interconnected; a liquid injection pipe is fixedly connected to the end of the partition away from the sealing gasket, and a valve is installed inside the liquid injection pipe.

[0015] Preferably, a plurality of evenly arranged cover plates are installed on the outer surface of the purification cylinder at the bottom of the three-phase separator; the cover plates are adapted to the surface of the purification cylinder; an insulation pad is fixedly connected to the side of the cover plate near the purification cylinder; the cover plate is hollow and the inside is evacuated to a vacuum.

[0016] Preferably, the top of the cover plate is provided with a connecting ring, and the connecting ring is fixedly connected to the purification cylinder; the outer side of the cover plate is fixedly connected with a connecting arm, and the connecting arm is L-shaped; the top of the connecting arm is fixedly connected with an insertion rod; the top surface of the connecting ring is fixedly connected with a plurality of insertion holes at the corresponding position of the insertion rod, and the insertion holes are adapted to the insertion rod.

[0017] The beneficial effects of the present invention are as follows: 1. The energy-saving and environmentally friendly textile wastewater treatment equipment of the present invention, through the setting of graphite column and through holes one and two on its surface, heats the dyeing wastewater entering the purification cylinder, so that the temperature inside the purification cylinder can still be maintained at a temperature suitable for microbial growth in winter, thereby ensuring the decomposition efficiency of the biological sludge inside. At the same time, the two three-phase separators inside the purification cylinder can isolate the purification cylinder into two main reaction zones. In the first reaction zone at the bottom, the biological sludge is violently stirred under the drive of methane, which is the main mixing zone, while the water flow between the two three-phase separators is no longer violently stirred. At this time, the microorganisms can fully react with the recalcitrant organic matter in the dyeing wastewater, thereby improving the purification efficiency. The through holes one uniformly set on the surface of the graphite column allows the dyeing wastewater discharged into the purification cylinder to mix more fully with the biological sludge at the bottom of the purification cylinder, which can also improve the purification efficiency of microorganisms.

[0018] 2. The energy-saving and environmentally friendly textile wastewater treatment equipment of the present invention uses magnetic blocks to attract paired limiting plates together, thereby forming a pair of guide rails. When the user pushes a new graphite column to the top surface of the support plate, the graphite column will not fail to move accurately to the bottom of the purification cylinder due to uneven pushing force. The replaced graphite column can also be pushed to the top surface of the support plate on the other side, thereby avoiding it from falling directly to the ground and causing damage, and then cleaning and reuse it. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention; Figure 2 is a cross-sectional view of the purification cylinder in the present invention; Figure 3 is a structural schematic diagram of the graphite column in the present invention; Figure 4 is a structural schematic diagram of the limiting ring in the present invention; Figure 5 is a structural schematic diagram of the bottom cover in the present invention; Figure 6 is a structural schematic diagram of the nut in the present invention; Figure 7 is a structural schematic diagram of the support plate in the present invention; Figure 8 is a structural schematic diagram of the support frame in the present invention; Figure 9 is a structural schematic diagram of the partition plate in the present invention; Figure 10 is a structural schematic diagram of the cover plate in the present invention; In the figures: 1, purification cylinder; 2, three-phase separator; 3, air guide pipe; 4, overflow pipe; 5, gas-liquid separator; 6, graphite column; 7, through hole one; 8, through hole one. 9. Gas heat exchanger; 10. Water inlet pipe; 11. Limiting groove; 12. Limiting ring; 13. Bottom cover; 14. Graphite gasket; 15. Support frame; 16. Support plate; 17. Slide rod; 18. Nut; 19. Sealing ring; 20. Support plate; 21. Limiting plate; 22. Magnet block; 23. Connecting plate; 24. Threaded rod; 25. Toothed ring; 26. Sleeve; 27. Slide plate; 28. Through groove; 29. ​​Partition plate; 30. Slot; 31. Water injection pipe; 32. Sealing gasket; 33. Liquid injection pipe; 34. Cover plate; 35. Insulation pad; 36. Connecting ring; 37. Connecting arm; 38. Insert rod; 39. Insertion hole. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] As shown in Figures 1 to 4, an energy-saving and environmentally friendly textile wastewater treatment device according to an embodiment of the present invention includes a purification cylinder 1; two three-phase separators 2 are fixedly connected inside the purification cylinder 1; air guide pipes 3 are fixedly connected to the top of each of the two three-phase separators 2; an overflow pipe 4 is fixedly connected to the top of the purification cylinder 1; a gas-liquid separation tank 5 is fixedly connected to the top surface of the purification cylinder 1; the air guide pipes 3 extend into the gas-liquid separation tank 5, and activated carbon is disposed inside the gas-liquid separation tank 5; a graphite column 6 is installed on the bottom surface of the purification cylinder 1; The graphite column 6 has multiple evenly arranged through holes 7 on its end face; the graphite column 6 has multiple evenly arranged through holes 8 on its side surface; the through holes 7 and through holes 8 are staggered and are not connected; a gas heat exchanger 9 is provided on one side of the purification cylinder 1; the gas heat exchanger 9 is connected to the gas-liquid separator 5 through a conduit, and the inlet and outlet of the gas heat exchanger 9 are connected to the through holes 8 through a connecting assembly; a water inlet pipe 10 is installed at the bottom of the purification cylinder 1.To ensure the efficiency of biological purification of dyeing and printing wastewater during operation, this embodiment of the invention can be used. First, the pre-treated dyeing and printing wastewater is pumped into the bottom of the purification cylinder 1 through the inlet pipe 10. At this time, the gas heat exchanger 9 starts and pumps heated hot water into the second through-hole 8. The dyeing and printing wastewater pumped in from the inlet pipe 10 passes through the first through-hole 7 on the surface of the graphite column 6. Since the first through-hole 7 and the second through-hole 8 are not connected, the hot water, when passing through the second through-hole 8, heats the dyeing and printing wastewater flowing through the first through-hole 7 through the graphite column 6, thereby raising the temperature of the wastewater to a level suitable for microbial growth, and then it enters the bottom of the purification cylinder 1. In the first section, the biological sludge is mixed with the wastewater. The microorganisms in the biological sludge decompose the organic matter in the dyeing wastewater, producing methane. As the methane rises, it agitates the biological sludge and wastewater within the purification tank 1, ensuring thorough mixing. The rising methane, biological sludge, and wastewater then pass through the first three-phase separator 2. Some of the biological sludge falls back to the bottom of the purification tank 1, while the partially separated biological sludge continues to decompose the organic matter in the wastewater, producing more methane. This methane then carries the remaining biological sludge upwards, eventually contacting the second three-phase separator 2. The three-phase separator 2 intercepts biological sludge and introduces methane into the gas-liquid separator 5 through the gas pipe 3. The dyeing wastewater, after organic matter decomposition treatment, flows out through the overflow pipe 4. Upon entering the gas-liquid separator 5, it undergoes adsorption by activated carbon, and the dried methane is introduced into the gas heat exchanger 9, thus saving energy. The graphite column 6 and its surface through-holes 7 and 8 heat the dyeing wastewater entering the purification cylinder 1, ensuring that the temperature inside the purification cylinder 1 remains suitable for microbial growth even in winter, thereby protecting the internal biological sludge. The decomposition efficiency of the sludge is improved. Simultaneously, the two three-phase separators 2 within the purification cylinder 1 separate the cylinder into two main reaction zones. In the first reaction zone at the bottom, the biological sludge is violently agitated by methane, forming the primary mixing zone. Meanwhile, the water flow between the two three-phase separators 2 is no longer violently agitated. At this point, the microorganisms can fully react with the recalcitrant organic matter in the dyeing and printing wastewater, thereby improving the purification efficiency. Furthermore, the uniformly arranged through-holes 7 on the surface of the graphite column 6 allow the dyeing and printing wastewater discharged into the purification cylinder 1 to mix more thoroughly with the biological sludge at the bottom of the cylinder, further enhancing the purification efficiency of the microorganisms.

[0023] As shown in Figures 2 to 5, the graphite column 6 has limiting grooves 11 on both its top and bottom surfaces, and these grooves 11 are arranged in a ring shape. A limiting ring 12 is fixedly connected to the top surface of the graphite column 6 within the inner wall of the purification cylinder 1, and the limiting ring 12 is adapted to the limiting groove 11. A bottom cover 13 is provided at the bottom of the purification tower, and the bottom cover 13 is fixed to the purification cylinder 1 by bolts. Graphite gaskets 14 are provided between the limiting ring 12, the bottom cover 13, and the limiting groove 11. A support frame 15 is fixedly connected to the bottom of the purification cylinder 1, and the bottom cover 13 is slidably connected to the support frame 15. During operation, when the graphite column 6 is used for a long time, its surface... When the through hole 7 becomes blocked and needs to be cleaned, the user can unscrew the bolts between the bottom cover 13 and the purification cylinder 1, so that the bottom cover 13 and the purification cylinder 1 are no longer fixed together. Then the user can remove the bottom cover 13 and take out the graphite column 6 for cleaning or replacement. When the graphite column 6 is reinstalled into the purification cylinder 1, the limiting ring 12 and the bottom cover 13 will press tightly against the graphite gasket 14 in the limiting groove 11, thereby ensuring the sealing of the graphite column 6 and preventing dyeing wastewater from entering the water used for heating on the side of the graphite column 6, which would contaminate the water used for heating and further corrode the internal pipes of the gas heat exchanger 9.

[0024] As shown in Figures 4 to 7, the water inlet pipe 10 is slidably connected to the bottom cover 13; a support plate 16 is fixedly connected to the top surface of the water inlet pipe 10; a plurality of evenly arranged sliding rods 17 are fixedly connected to the bottom surface of the support plate 16, and the sliding rods 17 are slidably connected to the bottom cover 13; a nut 18 is threadedly connected to the bottom of the sliding rod 17; a sealing ring 19 is fixedly connected to the bottom surface of the support plate 16, and the sliding rod 17 is located inside the sealing ring 19; during operation, when the user releases the fixing between the bottom cover 13 and the purification cylinder 1, the user also needs to unscrew the surface of the sliding rod 17. Nut 18 moves the water inlet pipe 10 to the bottom of slide bar 17. When the user lowers the bottom cover 13, the water inlet pipe 10 will touch the ground first and stop descending. The bottom cover 13 can continue to descend along slide bar 17 until its bottom surface contacts nut 18. Since the support plate 16 on the top surface of the water inlet pipe 10 inside the graphite column 6 is supported, the graphite column 6 will not descend with the bottom cover 13. At the same time, its surroundings will no longer be blocked by the bottom cover 13. At this time, the user can slide the graphite column 6 on the top surface of the support plate 16, which further facilitates replacement and cleaning.

[0025] As shown in Figures 1 and 8, a pair of support plates 20 are mounted on the surface of the support frame 15; the two support plates 20 are symmetrically arranged about the water inlet pipe 10; a pair of symmetrically arranged limiting plates 21 are slidably connected to the top surface of each of the two support plates 20, and the distance between the pair of limiting plates 21 is the same as the diameter of the graphite column 6; a magnet 22 is embedded at the end of each pair of limiting plates 21 that is close to each other, and the pair of magnets 22 attract each other; during operation, when the user replaces the graphite column 6, the user can place the new graphite column 6 on one of the supports. Between the two limiting plates 21 on the top surface of the support plate 20, the user slides the limiting plates 21 on the top surface of the two support plates 20, so that the magnets 22 on the end faces of the pair of limiting plates 21 are attracted together, thus forming a pair of guide rails. At this time, when the user pushes the new graphite column 6 to the top surface of the tray 16, the graphite column 6 will not fail to move accurately to the bottom of the purification cylinder 1 due to uneven pushing force. The replaced graphite column 6 can also be pushed to the top surface of the support plate 20 on the other side, thus preventing it from falling directly to the ground and causing damage, and then cleaning and reuse it.

[0026] As shown in Figures 1 and 8, both support plates 20 are slidably connected to the support frame 15; both sides of the two support plates 20 are fixedly connected to a connecting plate 23; the surfaces of both connecting plates 23 are threadedly connected to threaded rods 24; a toothed ring 25 is rotatably connected to the bottom of the support frame 15, and the toothed ring 25 is driven by a servo motor; the bottom of the threaded rod 24 is rotatably connected to the support frame 15, and the bottom of the threaded rod 24 is engaged with the toothed ring 25; during operation, to facilitate the user's movement of the graphite column 6, the user can first drive the toothed ring 25 to rotate via the servo motor, thereby driving the two threaded rods 24 to rotate synchronously. The two synchronously rotating threaded rods 24 will drive the two connecting plates 23 to rise synchronously, thereby driving the two support plates 20 to rise synchronously. Thus, the user can move the support plate 20 to the bottom of the support frame 15, and then the user transfers the graphite column 6 to the top surface of the support plate 20. Then, the threaded rods 24 lift the support plate 20 to the support plate 16. This facilitates the user's handling of the graphite column 6, thereby reducing the maintenance difficulty of this embodiment of the invention.

[0027] As shown in Figure 8, sleeves 26 are rotatably connected to the two connecting plates 23 on opposite sides, and the two sleeves 26 are staggered. Slide plates 27 are slidably connected inside the sleeves 26. Through slots 28 are provided at corresponding positions of the two connecting plates 23 and the two slide plates 27. During operation, when the user needs to lift the bottom cover 13, the user first lowers the connecting plates 23 to the bottom of the support frame 15, then rotates the sleeves 26, and then slides the slide plates 27 inside the sleeves 26 so that their two ends are inserted into the through slots 28 on the surfaces of the two connecting plates 23. At this time, the two slide plates 27 and the two connecting plates 23 can form a support, which can support the bottom surface of the bottom cover 13. When the threaded rod 24 drives the connecting plates 23 to rise, the connecting plates 23 can support the bottom cover 13 and rise together through the two slide plates 27, thereby reducing the difficulty for the user to fix the bottom cover 13.

[0028] As shown in Figures 4 and 9, the connecting assembly includes a pair of partitions 29; the two partitions 29 are fixedly connected to the inner wall of the purification cylinder 1, and the partitions 29 are perpendicular to the second through hole 8; the side surface of the graphite column 6 has a slot 30 at the corresponding position of the partition 29, and the slot 30 extends to the top surface of the graphite column 6; the slot 30 is adapted to the partition 29, and the slot 30 is not connected to the first through hole 7 and the second through hole 8; the outer surface of the purification cylinder 1 is fixedly connected to both ends of the second through hole 8 with water injection pipes 31, and the two water injection pipes 31 are respectively heat exchanged with the gas. The inlet and outlet of the device 9 are connected. During operation, when the graphite column 6 is installed inside the purification cylinder 1, the partition 29 inside the purification cylinder 1 will be inserted into the slot 30 on the side surface of the graphite column 6, thereby isolating the two ends of the through hole 2 8. When the gas heat exchanger 9 pumps hot water from the water injection pipe 31, the hot water must pass through the through hole 2 8 to enter the water injection pipe 31 on the other side and re-enter the gas heat exchanger 9. This ensures that the dyeing wastewater inside the through hole 1 7 and the hot water inside the through hole 2 8 can exchange heat fully, thereby improving the heat exchange efficiency.

[0029] As shown in Figure 9, a sealing gasket 32 ​​is fixedly connected to the end of the partition 29 away from the inner wall of the purification cylinder 1; both the partition 29 and the sealing gasket 32 ​​are hollow and interconnected; an injection pipe 33 is fixedly connected to the end of the partition 29 away from the sealing gasket 32, and a valve is installed inside the injection pipe 33; during operation, after the graphite column 6 is installed inside the purification cylinder 1, the user can inject sealing liquid into the partition 29 through the injection pipe 33. The sealing liquid will enter the sealing gasket 32 ​​through the partition 29 and cause the sealing gasket 32 ​​to expand, so that it can fill the slot 30, thereby improving the sealing performance between the partition 29 and the slot 30, and further ensuring that most of the hot water can pass through the through hole 2 8 to complete the heat exchange.

[0030] As shown in Figures 1 and 10, multiple evenly arranged cover plates 34 are installed on the outer surface of the purification cylinder 1 at the bottom of the three-phase separator 2; the cover plates 34 are adapted to the surface of the purification cylinder 1; a heat insulation pad 35 is fixedly connected to the side of the cover plate 34 near the purification cylinder 1; the cover plate 34 is hollow and the inside is evacuated to a vacuum; during operation, when the heated dyeing wastewater is sent into the purification cylinder 1, the hollow cover plate 34 and the heat insulation pad 35 on its surface can achieve a heat preservation effect, minimizing the heat loss inside the purification cylinder 1, thereby achieving the purpose of saving energy.

[0031] As shown in Figures 1 and 10, a connecting ring 36 is provided on the top of the cover plate 34, and the connecting ring 36 is fixedly connected to the purification cylinder 1; a connecting arm 37 is fixedly connected to the outer side of the cover plate 34, and the connecting arm 37 is L-shaped; an insertion rod 38 is fixedly connected to the top of the connecting arm 37; a plurality of insertion holes 39 are fixedly connected to the top surface of the connecting ring 36 at the corresponding position of the insertion rod 38, and the insertion holes 39 are adapted to the insertion rod 38; during operation, in order to avoid the internal temperature of the purification cylinder 1 becoming too high after summer, which would affect the reproduction of microorganisms, the user needs to lift the cover plate 34 upwards so that the insertion rod 38 at the end of the connecting arm 37 can be pulled out from the insertion hole 39. At this time, the user can remove the cover plate 34 from the surface of the purification cylinder 1, thereby ensuring the normal heat dissipation of the purification cylinder 1 and thus ensuring the normal reproduction of microorganisms.

[0032] To ensure the efficiency of biological purification of dyeing and printing wastewater during operation, this embodiment of the invention can be used. First, the pre-treated dyeing and printing wastewater is pumped into the bottom of the purification cylinder 1 through the inlet pipe 10. At this time, the gas heat exchanger 9 starts and pumps heated hot water into the second through-hole 8. The dyeing and printing wastewater pumped in from the inlet pipe 10 passes through the first through-hole 7 on the surface of the graphite column 6. Since the first through-hole 7 and the second through-hole 8 are not connected, the hot water, when passing through the second through-hole 8, heats the dyeing and printing wastewater flowing through the first through-hole 7 through the graphite column 6, thereby raising the temperature of the wastewater to a level suitable for microbial growth, and then it enters the bottom of the purification cylinder 1. In the first section, the biological sludge is mixed with the wastewater. The microorganisms in the biological sludge decompose the organic matter in the dyeing wastewater, producing methane. As the methane rises, it agitates the biological sludge and wastewater within the purification tank 1, ensuring thorough mixing. The rising methane, biological sludge, and wastewater then pass through the first three-phase separator 2. Some of the biological sludge falls back to the bottom of the purification tank 1, while the partially separated biological sludge continues to decompose the organic matter in the wastewater, producing more methane. This methane then carries the remaining biological sludge upwards, eventually contacting the second three-phase separator 2. The three-phase separator 2 intercepts biological sludge and introduces methane into the gas-liquid separator 5 through the gas pipe 3. The dyeing wastewater, after organic matter decomposition treatment, flows out through the overflow pipe 4. Upon entering the gas-liquid separator 5, it undergoes adsorption by activated carbon, and the dried methane is introduced into the gas heat exchanger 9, thus saving energy. The graphite column 6 and its surface through-holes 7 and 8 heat the dyeing wastewater entering the purification cylinder 1, ensuring that the temperature inside the purification cylinder 1 remains suitable for microbial growth even in winter, thereby protecting the internal biological sludge. The decomposition efficiency of the sludge is improved. At the same time, the two three-phase separators 2 inside the purification cylinder 1 can separate the purification cylinder 1 into two main reaction zones. In the first reaction zone at the bottom, the biological sludge is violently agitated under the action of methane, which is the main mixing zone. The water flow between the two three-phase separators 2 is no longer violently agitated. At this time, the microorganisms can fully react with the recalcitrant organic matter in the dyeing and printing wastewater, thereby improving the purification efficiency. The through holes 7 uniformly arranged on the surface of the graphite column 6 allow the dyeing and printing wastewater discharged into the purification cylinder 1 to mix more fully with the biological sludge at the bottom of the purification cylinder 1, which can also improve the purification efficiency of the microorganisms.

[0033] When the graphite column 6 is used for a long time, the through hole 7 on its surface will become blocked and needs to be cleaned. The user can unscrew the bolt between the bottom cover 13 and the purification cylinder 1 so that the bottom cover 13 and the purification cylinder 1 are no longer fixed together. Then the user can remove the bottom cover 13 and take out the graphite column 6 for cleaning or replacement. When the graphite column 6 is reinstalled into the purification cylinder 1, the limiting ring 12 and the bottom cover 13 will press tightly against the graphite gasket 14 in the limiting groove 11, thereby ensuring the sealing of the graphite column 6 and preventing dyeing wastewater from entering the water used for heating on the side of the graphite column 6, which would contaminate the water used for heating and further corrode the internal pipes of the gas heat exchanger 9.

[0034] When the user releases the fixing between the bottom cover 13 and the purification cylinder 1, the user also needs to unscrew the nut 18 on the surface of the slide bar 17 to move it to the bottom of the slide bar 17. At this time, when the user lowers the bottom cover 13, the water inlet pipe 10 will touch the ground first and stop descending. The bottom cover 13 can continue to descend along the slide bar 17 until its bottom surface contacts the nut 18. Since the support plate 16 on the top surface of the water inlet pipe 10 inside the graphite column 6 is supported, the graphite column 6 will not descend with the bottom cover 13. At the same time, its surroundings will no longer be blocked by the bottom cover 13. At this time, the user can slide the graphite column 6 on the top surface of the support plate 16, which further facilitates replacement and cleaning.

[0035] When the user replaces the graphite column 6, the user can place the new graphite column 6 between the two limiting plates 21 on the top surface of one of the support plates 20. Then the user slides the limiting plates 21 on the top surface of the two support plates 20, so that the magnet blocks 22 on the end faces of the pair of limiting plates 21 are attracted together, thus forming a pair of guide rails. At this time, when the user pushes the new graphite column 6 to the top surface of the tray 16, the graphite column 6 will not fail to move accurately to the bottom of the purification cylinder 1 due to uneven pushing force. The replaced graphite column 6 can also be pushed to the top surface of the support plate 20 on the other side, thus avoiding it from falling directly to the ground and causing damage, and then cleaning and reuse it.

[0036] To facilitate the user's movement of the graphite column 6, the user can first drive the gear ring 25 to rotate via a servo motor, which in turn drives the two threaded rods 24 to rotate synchronously. The two synchronously rotating threaded rods 24 will drive the two connecting plates 23 to rise synchronously, thereby driving the two support plates 20 to rise synchronously. In this way, the user can move the support plates 20 to the bottom of the support frame 15, and then the user transfers the graphite column 6 to the top surface of the support plate 20. Then the threaded rods 24 will lift the support plate 20 to the pallet 16. This makes it convenient for the user to move the graphite column 6, thereby reducing the maintenance difficulty of this embodiment of the invention.

[0037] When the user needs to lift the bottom cover 13, the user first needs to lower the connecting plate 23 to the bottom of the support frame 15, then the user rotates the sleeve 26, and then the user slides the sliding plate 27 inside the sleeve 26 so that its two ends are respectively inserted into the through grooves 28 on the surface of the two connecting plates 23. At this time, the two sliding plates 27 and the two connecting plates 23 can form a bracket, which can support the bottom surface of the bottom cover 13. When the threaded rod 24 drives the connecting plate 23 to rise, the connecting plate 23 can support the bottom cover 13 to rise together through the two sliding plates 27, thereby reducing the difficulty for the user to fix the bottom cover 13.

[0038] When the graphite column 6 is installed inside the purification cylinder 1, the partition 29 inside the purification cylinder 1 will be inserted into the slot 30 on the side surface of the graphite column 6, thereby isolating the two ends of the through hole 2 8. At this time, when the gas heat exchanger 9 pumps hot water from its water injection pipe 31, the hot water must pass through the through hole 2 8 to enter the water injection pipe 31 on the other side and re-enter the gas heat exchanger 9. This ensures that the dyeing wastewater inside the through hole 1 7 and the hot water inside the through hole 2 8 can exchange heat fully, thereby improving the heat exchange efficiency.

[0039] After the graphite column 6 is installed inside the purification cylinder 1, the user can inject sealing liquid into the partition 29 through the injection pipe 33. The sealing liquid will enter the sealing gasket 32 ​​through the partition 29 and cause the sealing gasket 32 ​​to expand, so that it can fill the slot 30, thereby improving the sealing between the partition 29 and the slot 30, and further ensuring that most of the hot water can pass through the through hole 2 8 to complete the heat exchange.

[0040] When the heated dyeing wastewater is sent into the purification cylinder 1, the hollow cover plate 34 and the heat insulation pad 35 on its surface can play a heat preservation role, minimizing the heat loss inside the purification cylinder 1, thereby achieving the purpose of saving energy.

[0041] When summer arrives, to prevent the internal temperature of the purification cylinder 1 from becoming too high and affecting the reproduction of microorganisms, the user needs to lift the cover plate 34 upwards so that the insertion rod 38 at the end of the connecting arm 37 can be pulled out from the insertion hole 39. At this time, the user can remove the cover plate 34 from the surface of the purification cylinder 1, thereby ensuring the normal heat dissipation of the purification cylinder 1 and thus ensuring the normal reproduction of microorganisms.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving and environmentally friendly textile wastewater treatment device, characterized in that: The device includes a purification cylinder; two three-phase separators are fixedly connected inside the purification cylinder; air guide pipes are fixedly connected to the top of each of the two three-phase separators; an overflow pipe is fixedly connected to the top of the purification cylinder; a gas-liquid separation tank is fixedly connected to the top surface of the purification cylinder; the air guide pipes extend into the gas-liquid separation tank, and activated carbon is installed inside the gas-liquid separation tank; a graphite column is installed on the bottom surface of the purification cylinder; multiple uniformly arranged through holes I are opened on the end face of the graphite column; multiple uniformly arranged through holes II are opened on the side surface of the graphite column; the through holes I and through holes II are staggered and do not communicate with each other; a gas heat exchanger is installed on one side of the purification cylinder; the gas heat exchanger is connected to the gas-liquid separation tank through a conduit, and the inlet and outlet of the gas heat exchanger are connected to the through holes II through a connecting component; a water inlet pipe is installed at the bottom of the purification cylinder.

2. The energy-saving and environmentally friendly textile wastewater treatment equipment according to claim 1, characterized in that: The graphite column has limiting grooves on both its top and bottom surfaces, and these grooves are arranged in a ring shape. The inner wall of the purification cylinder is fixedly connected to the top surface of the graphite column with a limiting ring, and the limiting ring is adapted to the limiting groove. The bottom of the purification tower is provided with a bottom cover, and the bottom cover is fixed to the purification cylinder with bolts. Graphite gaskets are provided between the limiting ring, the bottom cover, and the limiting groove. The bottom of the purification cylinder is fixedly connected to a support frame, and the bottom cover is slidably connected to the support frame.

3. The energy-saving and environmentally friendly textile wastewater treatment equipment according to claim 2, characterized in that: The water inlet pipe is slidably connected to the bottom cover; a support plate is fixedly connected to the top surface of the water inlet pipe; a plurality of evenly arranged sliding rods are fixedly connected to the bottom surface of the support plate, and the sliding rods are slidably connected to the bottom cover; a nut is threadedly connected to the bottom of the sliding rod; a sealing ring is fixedly connected to the bottom surface of the support plate, and the sliding rod is located inside the sealing ring.

4. The energy-saving and environmentally friendly textile wastewater treatment equipment according to claim 2, characterized in that: A pair of support plates are mounted on the surface of the support frame; the two support plates are symmetrically arranged about the water inlet pipe; a pair of symmetrically arranged limiting plates are slidably connected to the top surface of each of the two support plates, and the distance between the pair of limiting plates is consistent with the diameter of the graphite column; a magnet is embedded at the end of each pair of limiting plates that is close to each other, and the pair of magnets attract each other.

5. The energy-saving and environmentally friendly textile wastewater treatment equipment according to claim 4, characterized in that: Both support plates are slidably connected to the support frame; both sides of the two support plates are fixedly connected to a connecting plate; the surfaces of both connecting plates are threaded with threaded rods; a toothed ring is rotatably connected to the bottom of the support frame, and the toothed ring is driven by a servo motor; the bottom of the threaded rod is rotatably connected to the support frame, and the bottom of the threaded rod is engaged with the toothed ring.

6. The energy-saving and environmentally friendly textile wastewater treatment equipment according to claim 5, characterized in that: Each of the two connecting plates is rotatably connected to a sleeve on the side away from each other, and the two sleeves are staggered; a sliding plate is slidably connected inside the sleeve; and a through groove is opened at the corresponding position of the two sliding plates on each of the two connecting plates.

7. The energy-saving and environmentally friendly textile wastewater treatment equipment according to claim 1, characterized in that: The connecting assembly includes a pair of partitions; the two partitions are fixedly connected to the inner wall of the purification cylinder, and the partitions are perpendicular to the second through hole; the side surface of the graphite column has a slot at the corresponding position of the partition, and the slot extends to the top surface of the graphite column; the slot is adapted to the partition, and the slot is not connected to the first through hole and the second through hole; the outer surface of the purification cylinder is fixedly connected to both ends of the second through hole with water injection pipes, and the two water injection pipes are respectively connected to the inlet and outlet of the gas heat exchanger.

8. The energy-saving and environmentally friendly textile wastewater treatment equipment according to claim 7, characterized in that: A sealing gasket is fixedly connected to the end of the partition away from the inner wall of the purification cylinder; both the partition and the sealing gasket are hollow and interconnected; a liquid injection pipe is fixedly connected to the end of the partition away from the sealing gasket, and a valve is installed inside the liquid injection pipe.

9. The energy-saving and environmentally friendly textile wastewater treatment equipment according to claim 1, characterized in that: Multiple evenly spaced cover plates are installed on the outer surface of the purification cylinder at the bottom of the three-phase separator; the cover plates are adapted to the surface of the purification cylinder; an insulation pad is fixed to the side of the cover plate near the purification cylinder; the cover plate is hollow and its interior is evacuated to a vacuum.

10. The energy-saving and environmentally friendly textile wastewater treatment equipment according to claim 9, characterized in that: The top of the cover plate is provided with a connecting ring, and the connecting ring is fixedly connected to the purification cylinder; the outer side of the cover plate is fixedly connected with a connecting arm, and the connecting arm is L-shaped; the top of the connecting arm is fixedly connected with an insertion rod; the top surface of the connecting ring is fixedly connected with a plurality of evenly arranged insertion holes at the corresponding positions of the insertion rod, and the insertion holes are adapted to the insertion rod.

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