Treatment device for wastewater generated after dyeing of high-elasticity fabric

Abstract

The invention provides a treatment device for wastewater generated after dyeing of a high-elasticity fabric. The treatment device comprises a coarse filter tank; the adjusting tank is arranged on one side of the coarse filtering tank. According to the treatment device for wastewater generated after dyeing of the high-elasticity fabric, fiber impurities, yarn broken ends and large-particle suspended solids are accurately intercepted from the coarse filtering tank of the pretreatment module, disperse dyes and colloid impurities are efficiently adsorbed and settled in the reaction tank, the sedimentation tank and the air floatation tank by means of a specially-made coagulant and coagulant aid combination, and the high-elasticity fabric is obtained. An anaerobic and aerobic biological reaction tank of the biochemical treatment module is used for deeply degrading organic pollutants in wastewater, and a fine filtering tank and a disinfecting tank of the deep treatment module are used for ensuring that the water is clear and transparent and the biological safety reaches the standard; various pollution indexes such as chromaticity, suspended matters, organic matters and microorganisms of the wastewater can be accurately attacked, so that the treated wastewater stably reaches or even is superior to the discharge standard, the purification efficiency is greatly improved, and the energy-saving and emission-reducing concept is met.

Description

Technical Field

[0001] The invention relates to the field of wastewater treatment after dyeing fabrics, and in particular to a device for treating wastewater after dyeing high-elastic fabrics. Background Art

[0002] With the continuous development of the textile industry, various high-performance and new textile fabrics are emerging one after another. Among them, high-elastic fabrics have been widely used in many fields such as sports and leisure due to their unique elasticity and comfortable wearing experience. Polyolefin elastic fiber (Mengsi) fabric has many advantages over traditional spandex fabrics, such as lighter weight, stable elasticity and elastic recovery, low-temperature shaping, and natural fiber texture, etc., and has gradually occupied an important position in the market.

[0003] By developing polyolefin elastic fiber to replace spandex high-elastic products, green production, energy conservation and emission reduction are achieved. In the molecular structure of polyolefin elastic fiber (Mengsi), there are only CC and CH inert single bonds (no chemically active groups, double bonds and chain segments), and the chemical properties are stable. In the pre-treatment process, Mengsi adopts "low tension technology and equipment" to achieve excellent fabric quality (stability and elastic recovery rate) higher than spandex grey cloth; in the pre-setting process, the pre-setting of spandex is about 195℃, while Mengsi adopts 120℃-130 low-temperature stretch drying for pre-setting, which greatly reduces the energy consumption and cost of production, responding to the national energy conservation, emission reduction and green environmental protection purpose.

[0004] In the production process of high-elastic fabrics, dyeing is a key process, which can give the fabrics rich colors and meet the aesthetic needs of different consumers. However, the dyeing process will produce a large amount of wastewater containing various chemical substances. These wastewaters have complex components, mainly including disperse dyes, dyeing accelerators (such as DMF, HAc), sodium sulfate, leveling agents, dispersants, etc., and wastewater often has certain characteristics such as temperature, pH and chromaticity. If it is discharged directly without proper treatment, it will cause serious pollution to the environment, threaten the ecological balance and the use function of the surrounding water bodies, and do not meet the increasingly stringent environmental protection requirements and sustainable development concepts.

[0005] Therefore, it is necessary to provide a treatment device for wastewater after dyeing of high-elastic fabrics to solve the above technical problems. Summary of the invention

[0006] The present invention provides a device for treating wastewater after dyeing of high-elastic fabrics, which solves the problem that a large amount of wastewater containing various chemical substances will be generated during the dyeing process. The wastewater has complex components and mainly includes disperse dyes, dye accelerators (such as DMF, HAc), sodium sulfate, leveling agents, dispersants, etc., and the wastewater often has certain characteristics such as temperature, pH and chromaticity. If it is directly discharged without proper treatment, it will cause serious pollution to the environment, threaten the ecological balance and the use function of the surrounding water bodies, and does not meet the current increasingly stringent environmental protection requirements and sustainable development concepts.

[0007] In order to solve the above technical problems, the present invention provides a device for treating wastewater after dyeing of high-elastic fabrics, comprising: a coarse filtration tank;

[0008] A regulating tank, wherein the regulating tank is arranged on one side of the coarse filtration tank, a reaction tank is arranged on one side of the regulating tank, a sedimentation tank is arranged on one side of the reaction tank, a flotation tank is arranged on one side of the sedimentation tank, and an anaerobic biological reaction tank is arranged on one side of the flotation tank;

[0009] an aerobic biological reaction tank, wherein the aerobic biological reaction tank is arranged on one side of the anaerobic biological reaction tank, and a fine filtration tank is arranged on one side of the aerobic biological reaction tank, wherein the fine filtration tank comprises a tank body, a mounting groove, a gravel layer, a quartz sand layer and an anthracite layer, and a disinfection tank is arranged on one side of the fine filtration tank;

[0010] A chlorine dioxide generator is arranged on one side of the disinfection pool.

[0011] Preferably, a coarse grid plate is fixedly installed on one side of the coarse filtration tank, and a fine grid plate is fixedly installed on the other side of the coarse filtration tank.

[0012] Preferably, a mixing device is rotatably installed inside the regulating tank.

[0013] Preferably, a stirring device is rotatably installed inside the reaction tank.

[0014] Preferably, the sedimentation tank is in the form of an inclined tube sedimentation tank, the inclined tube has an inclination angle of 60° and is made of polyvinyl chloride.

[0015] Preferably, a jet aerator is provided inside the aerobic biological reaction tank.

[0016] Preferably, the tank body is arranged on one side of the aerobic biological reactor, the installation groove is opened in the middle of the top of the tank body, the gravel layer is arranged at the bottom inside the installation groove, the quartz sand layer is arranged on the top of the gravel layer, and the top of the anthracite layer.

[0017] Preferably, the anaerobic biological reaction tank adopts the form of an upflow anaerobic sludge blanket reactor, and the tank is filled with anaerobic sludge.

[0018] Preferably, slide grooves are provided on both sides of the outer surface of the coarse filtration tank, a slide rod is fixedly installed inside the slide groove, a spring is sleeved on one side of the outer surface of the slide rod, a moving device is sleeved on the other side of the outer surface of the slide rod, a scraper is fixedly connected to one side of the moving device, and a pressure plate is provided on one side of the surface of the moving device.

[0019] Preferably, the moving device includes a slider, a vertical block, a horizontal block and a connecting rod, the slider is slidably mounted on the outer surface of the slider, the vertical block is fixedly mounted on the top of the slider, the horizontal block is fixedly connected to one side of the vertical block, and the connecting rod is fixedly connected to the bottom end of the horizontal block.

[0020] Compared with the related art, the device for treating wastewater after dyeing of high elastic fabric provided by the present invention has the following beneficial effects:

[0021] The present invention provides a treatment device for wastewater after dyeing of high-elastic fabrics. Through the cooperation of a coarse filtration tank, a regulating tank, a reaction tank, a sedimentation tank, an air flotation tank, an anaerobic biological reaction tank, an aerobic biological reaction tank, a fine filtration tank and a disinfection tank, the coarse filtration tank of the pretreatment module accurately intercepts fiber impurities, yarn breakages and large suspended particles, and the reaction tank, the sedimentation tank and the air flotation tank use a special combination of coagulants and coagulant aids to efficiently adsorb and settle disperse dyes and colloidal impurities, and then the anaerobic and aerobic biological reaction tanks of the biochemical treatment module relay to deeply degrade organic matter in the wastewater. Pollutants, until the fine filtration pool and disinfection pool of the deep treatment module ensure that the water quality is clear and transparent and the biosafety meets the standards. The all-round and targeted treatment process can accurately strike the various pollution indicators of wastewater such as color, suspended solids, organic matter, microorganisms, etc., so that the treated wastewater can stably meet or even exceed the emission standards, greatly improving the purification efficiency. Taking into full consideration the water quality composition, temperature, pH value and other characteristics of the wastewater, the wastewater can be stably discharged after treatment, avoiding pollution to the environment, reducing the energy consumption of the overall treatment process, and complying with the concept of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a first embodiment of a device for treating wastewater after dyeing of high-elastic fabrics provided by the present invention;

[0023] Figure 2 for Figure 1 A schematic cross-sectional view of a fine filtration tank is shown;

[0024] Figure 3 A schematic structural diagram of a second embodiment of a device for treating wastewater after dyeing of high-elastic fabrics provided by the present invention;

[0025] Figure 4 for Figure 3 An enlarged schematic diagram of point A is shown;

[0026] Figure 5 for Figure 3 The schematic diagram of the mobile device structure is shown.

[0027] Numbers in the figure: 1, coarse filtration tank, 2, coarse grid plate, 3, fine grid plate, 4, regulating tank, 5, mixing device, 6, reaction tank, 7, sedimentation tank, 8, flotation tank, 9, anaerobic biological reaction tank, 10, jet aerator, 11, aerobic biological reaction tank, 12, fine filtration tank, 121, tank body, 122, installation groove, 123, gravel layer, 124, quartz sand layer, 125, anthracite layer, 13, disinfection tank, 14, chlorine dioxide generator, 15, drain pipe, 16, pump body, 17, slide chute, 18, slide rod, 19, spring, 20, moving device, 201, slider, 202, vertical block, 203, horizontal block, 204, connecting rod, 21, pressure plate, 22, scraper, 23, stirring device. DETAILED DESCRIPTION

[0028] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0029] First embodiment

[0030] Please refer to Figure 1 and Figure 2 ,in, Figure 1 A schematic structural diagram of a first embodiment of a device for treating wastewater after dyeing of high-elastic fabrics provided by the present invention; Figure 2 for Figure 1 The cross-sectional schematic diagram of the fine filter tank is shown. A device for treating wastewater after dyeing of high elastic fabrics comprises: a coarse filter tank 1;

[0031] A regulating tank 4, wherein the regulating tank 4 is arranged at one side of the coarse filtration tank 1, a reaction tank 6 is arranged at one side of the regulating tank 4, a sedimentation tank 7 is arranged at one side of the reaction tank 6, a flotation tank 8 is arranged at one side of the sedimentation tank 7, and an anaerobic biological reaction tank 9 is arranged at one side of the flotation tank 8;

[0032] an aerobic bioreactor tank 11, the aerobic bioreactor tank 11 being arranged at one side of the anaerobic bioreactor tank 9, a fine filter tank 12 being arranged at one side of the aerobic bioreactor tank 11, the fine filter tank 12 comprising a tank body 121, a mounting groove 122, a gravel layer 123, a quartz sand layer 124 and an anthracite layer 125, and a disinfection tank 13 being arranged at one side of the fine filter tank 12;

[0033] A chlorine dioxide generator 14 is disposed at one side of the disinfection pool 13 .

[0034] A coarse grid plate 2 is fixedly installed on one side of the coarse filtration tank 1 , and a fine grid plate 3 is fixedly installed on the other side of the coarse filtration tank 1 .

[0035] A mixing device 5 is rotatably installed inside the regulating tank 4 .

[0036] A stirring device 23 is rotatably installed inside the reaction tank 6 .

[0037] The sedimentation tank 7 is in the form of an inclined tube sedimentation tank, the inclined tube has an inclination angle of 60° and is made of polyvinyl chloride.

[0038] A jet aerator 10 is disposed inside the aerobic biological reaction tank 11 .

[0039] The tank body 121 is arranged on one side of the aerobic biological reaction tank 11, the installation groove 122 is opened in the middle of the top of the tank body 121, the gravel layer 123 is arranged at the bottom inside the installation groove 122, the quartz sand layer 124 is arranged on the top of the gravel layer 123, and the anthracite layer 125 is arranged on the top.

[0040] The anaerobic biological reaction tank 9 is in the form of an upflow anaerobic sludge blanket reactor, and the tank is filled with anaerobic sludge.

[0041] The coarse filtration tank 1, the regulating tank 4, the reaction tank 6, the sedimentation tank 7, the flotation tank 8, the anaerobic biological reaction tank 9, the aerobic biological reaction tank 11, the fine filtration tank 12 and the disinfection tank 13 are connected through a discharge pipe 15 and a pump body 16 to control the flow of sewage.

[0042] The surface of the coarse grid plate 2 is provided with a coarser filter groove, and the surface of the fine grid plate 3 is provided with a finer filter groove.

[0043] The regulating tank 4 is equipped with a mixing device 5, which can adopt a mechanical stirring blade or an air stirring tube.

[0044] A stirring device 23 is provided in the reaction tank 6 to ensure that the reagent and the wastewater are fully mixed and reacted; the sedimentation tank 7 is in the form of an inclined tube sedimentation tank.

[0045] The flotation tank 8 adopts dissolved air flotation technology and is equipped with dissolved air tanks, releasers, scrapers and other equipment. The working pressure of the dissolved air tank is 0.3-0.5MPa, and the releaser adopts a high-efficiency patented product to ensure that microbubbles are generated evenly and finely.

[0046] The anaerobic biological reaction tank 9 adopts the form of an upflow anaerobic sludge blanket reactor (UASB), in which a certain proportion of anaerobic sludge is filled, and a water distribution system is provided at the bottom to ensure uniform distribution of wastewater.

[0047] The aerobic biological reactor 11 adopts the activated sludge method, and an aeration system is provided in the tank, which can adopt a microporous aeration disk or a jet aerator to ensure sufficient oxygen supply; at the same time, a sludge return device is equipped to maintain a suitable sludge concentration in the tank.

[0048] The disinfection pool 13 adopts a chlorine dioxide disinfection process and is equipped with a chlorine dioxide generator 14, which can automatically adjust the chlorine dioxide dosage according to the wastewater flow rate.

[0049] The working principle of the device for treating wastewater after dyeing of high elastic fabrics provided by the present invention is as follows:

[0050] During operation, the coarse grid plate 2 and the fine grid plate 3 in the coarse filtration tank 1 first intercept the fiber impurities, yarn breaks and large suspended particles in the wastewater to prevent them from entering the subsequent treatment units and causing blockages. When treating the Mengsi fabric dyeing wastewater, it can effectively remove the possible residual incompletely dissolved refining auxiliary agent particles, a small amount of detached fibers, etc., and preliminarily purify the wastewater.

[0051] The regulating tank 4 regulates the water quality and water quantity of the wastewater. Since the dyeing process parameters of different batches may fluctuate slightly, the pH value, pollutant concentration, etc. of the wastewater will be different. The regulating tank 4 can mix the wastewater evenly and stabilize the water quality. At the same time, it uses stirring to dissipate heat and reduce the temperature of the wastewater to close to normal temperature, which is conducive to subsequent treatment. After adjustment, the pH value fluctuation range of the wastewater can be controlled within ±0.5, and the temperature drops to 30-35°C.

[0052] The reaction tank 6 is provided with an agitator, and the sedimentation tank 7 is in the form of an inclined tube sedimentation tank to ensure that the reagent and the wastewater are fully mixed and reacted. Polyaluminium chloride and polyacrylamide are added to the wastewater as coagulants and coagulant aids. The dosage of polyaluminium chloride is 100-150mg / L, and the dosage of polyacrylamide is 3-5mg / L, which is fine-tuned according to the actual turbidity and organic matter content of the wastewater.

[0053] The aluminum hydroxide colloid produced by the hydrolysis of polyaluminum chloride can adsorb suspended dye particles, colloidal impurities, etc. in the wastewater. Polyacrylamide, through the bridging effect of long-chain molecules, makes the flocs further grow and settle, and can effectively remove most of the disperse dyes and other colloidal auxiliary agent residues in the wastewater, so that the color removal rate of the wastewater reaches 70%-80%, and the suspended matter removal rate reaches more than 85%.

[0054] The flotation tank 8 uses the adhesion of microbubbles to bring a small amount of fine suspended matter, grease (such as oily components in some additives) and some dye particles that have not completely settled after coagulation and sedimentation to the water surface, where they are scraped off by a scraper. After flotation treatment, the residual chromaticity of the wastewater can be reduced by another 10%-15%, further improving the water purification effect.

[0055] The organic pollutants in the wastewater (such as the decomposition products of residual dyes and additives, and some soluble organic matter) are decomposed and converted into gases such as methane and carbon dioxide under the action of anaerobic microorganisms, thereby achieving the degradation of some organic matter and reducing the chemical oxygen demand (COD) of the wastewater. For Mengsi fabric dyeing wastewater, the COD removal rate in the anaerobic treatment stage can be 40%-50%, and at the same time it can improve the biodegradability of the wastewater, creating conditions for subsequent aerobic treatment.

[0056] In the aerobic biological reactor 11, aerobic microorganisms further decompose the remaining organic pollutants in the wastewater under an aerobic environment, and completely oxidize them into harmless substances such as carbon dioxide and water. After aerobic treatment, the COD removal rate of the wastewater can reach more than 80%, and the biochemical oxygen demand (BOD) removal rate can reach more than 90%, ensuring that the organic matter content of the wastewater is greatly reduced and meets the emission standard requirements.

[0057] The fine filtration tank 12 can remove the fine suspended matter, colloidal particles and some microorganisms remaining in the wastewater after biochemical treatment, further reduce the turbidity of the wastewater, make the suspended matter content in the effluent less than 10 mg / L, and ensure the water quality is clear and transparent.

[0058] The disinfection tank 13 kills pathogenic microorganisms in the wastewater, such as bacteria and viruses, to ensure the biological safety of the discharged wastewater. After disinfection, the number of fecal coliform bacteria in the wastewater is less than 1000 / L, meeting the requirements of the discharge standard for microbial indicators.

[0059] Compared with the related art, the device for treating wastewater after dyeing of high elastic fabric provided by the present invention has the following beneficial effects:

[0060] The present invention provides a treatment device for wastewater after dyeing of high-elastic fabrics, which cooperates with each other through a coarse filtration tank 1, a regulating tank 4, a reaction tank 6, a sedimentation tank 7, an air flotation tank 8, an anaerobic biological reaction tank 9, an aerobic biological reaction tank 11, a fine filtration tank 12 and a disinfection tank 13. The coarse filtration tank 1 of the pretreatment module accurately intercepts fiber impurities, yarn ends and large suspended particles, and the reaction tank 6, the sedimentation tank 7 and the air flotation tank 8 use a special combination of coagulant and coagulant aid to efficiently adsorb and settle disperse dyes and colloidal impurities, and then the anaerobic and aerobic biological reaction tanks 11 of the biochemical treatment module are relayed to deeply reduce the concentration of impurities. The organic pollutants in the wastewater are dissolved until the fine filtration pool 12 and the disinfection pool 13 of the deep treatment module ensure that the water quality is clear and transparent and meets the biosafety standards. The all-round and targeted treatment process can accurately strike various pollution indicators such as color, suspended solids, organic matter, and microorganisms in the wastewater, so that the treated wastewater can stably meet or even exceed the emission standards, greatly improving the purification efficiency. Taking into full consideration the water quality composition, temperature, pH and other characteristics of the wastewater, the wastewater can be stably discharged after treatment, avoiding pollution to the environment, reducing the energy consumption of the overall treatment process, and complying with the concept of energy conservation and emission reduction.

[0061] Second embodiment

[0062] Please refer to Figure 3 , Figure 4 and Figure 5 Based on the treatment device for wastewater after dyeing of high elastic fabrics provided in the first embodiment of the present application, the second embodiment of the present application proposes another treatment device for wastewater after dyeing of high elastic fabrics. The second embodiment is only a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0063] Specifically, the difference of the second embodiment of the present application in providing a device for treating wastewater after dyeing of highly elastic fabrics is that, in a device for treating wastewater after dyeing of highly elastic fabrics, slide grooves 17 are provided on both sides of the outer surface of the coarse filtration tank 1, and a slide rod 18 is fixedly installed inside the slide groove 17, and a spring 19 is sleeved on one side of the outer surface of the slide rod 18, and a moving device 20 is sleeved on the other side of the outer surface of the slide rod 18, a scraper 22 is fixedly connected to one side of the moving device 20, and a pressure plate 21 is provided on one side of the surface of the moving device 20.

[0064] The moving device 20 includes a slider 201, a vertical block 202, a horizontal block 203 and a connecting rod 204. The slider 201 is slidably installed on the outer surface of the slide rod 18, the vertical block 202 is fixedly installed on the top of the slider 201, the horizontal block 203 is fixedly connected to one side of the vertical block 202, and the connecting rod 204 is fixedly connected to the bottom end of the horizontal block 203.

[0065] The working principle of the device for treating wastewater after dyeing of high elastic fabrics provided by the present invention is as follows:

[0066] During operation, the user first pushes the pressure plate 21 to move downward, and the pressure plate 21 pushes the slider 201, the vertical block 202, the horizontal block 203 and the connecting rod 204 to move downward. The slider 201 slides downward along the surface of the slide rod 18 and squeezes the spring 19. The connecting rod 204 pushes the scraper 22 to slide downward on the surface of the grid plate, scraping off the impurities accumulated on the surface of the grid plate to maintain the wastewater filtering effect of the grid plate.

[0067] When the user releases the slider 201, the restoring elastic force of the spring 19 pushes the slider 201 to move upward, so that the connecting rod 204 drives the scraper 22 to move upward, and the scraper 22 returns to its original position to wait for the next use.

[0068] Compared with the related art, the device for treating wastewater after dyeing of high elastic fabric provided by the present invention has the following beneficial effects:

[0069] The present invention provides a treatment device for wastewater after dyeing of high-elastic fabrics. A moving device 20 is supported by the restoring elastic force of a spring 19. A user can push a pressure plate 21 to drive the moving device 20 to move downward and squeeze the spring 19. The moving device 20 drives a scraper 22 to move downward. The scraper 22 scrapes off fiber impurities, broken yarn ends and large suspended particles on the surface of the grid plate to maintain the filtering effect of the grid plate. The device has a simple structure and strong practicality. It is convenient for operators to quickly clean up impurities intercepted on the surface of the grid plate, avoid reducing the filtering effect of the device, maintain the wastewater treatment efficiency of the device, and reduce the number of times the operator salvages impurities.

[0070] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for treating wastewater after dyeing of high elastic fabrics, characterized in that: include: Coarse filter tank; A regulating tank, wherein the regulating tank is arranged on one side of the coarse filtration tank, a reaction tank is arranged on one side of the regulating tank, a sedimentation tank is arranged on one side of the reaction tank, a flotation tank is arranged on one side of the sedimentation tank, and an anaerobic biological reaction tank is arranged on one side of the flotation tank; an aerobic biological reaction tank, wherein the aerobic biological reaction tank is arranged on one side of the anaerobic biological reaction tank, and a fine filtration tank is arranged on one side of the aerobic biological reaction tank, wherein the fine filtration tank comprises a tank body, a mounting groove, a gravel layer, a quartz sand layer and an anthracite layer, and a disinfection tank is arranged on one side of the fine filtration tank; A chlorine dioxide generator is arranged on one side of the disinfection pool.

2. The device for treating wastewater after dyeing of high elastic fabric according to claim 1, characterized in that: A coarse grid plate is fixedly installed on one side of the coarse filtration tank, and a fine grid plate is fixedly installed on the other side of the coarse filtration tank.

3. The device for treating wastewater after dyeing of high elastic fabric according to claim 1, characterized in that: A mixing device is rotatably installed inside the regulating tank.

4. The device for treating wastewater after dyeing of high elastic fabric according to claim 1, characterized in that: A stirring device is rotatably installed inside the reaction tank.

5. The device for treating wastewater after dyeing of high elastic fabric according to claim 1, characterized in that: The sedimentation tank adopts the form of an inclined tube sedimentation tank, the inclined tube has an inclination angle of 60° and is made of polyvinyl chloride.

6. The device for treating wastewater after dyeing of high elastic fabric according to claim 1, characterized in that: A jet aerator is arranged inside the aerobic biological reaction tank.

7. The device for treating wastewater after dyeing of high elastic fabric according to claim 1, characterized in that: The tank body is arranged on one side of the aerobic biological reactor, the installation groove is opened in the middle of the top of the tank body, the gravel layer is arranged at the bottom inside the installation groove, the quartz sand layer is arranged on the top of the gravel layer, and the top of the anthracite layer.

8. The device for treating wastewater after dyeing of high elastic fabric according to claim 1, characterized in that: The anaerobic biological reaction tank adopts an upflow anaerobic sludge bed reactor, and the tank is filled with anaerobic sludge.

9. The device for treating wastewater after dyeing of high elastic fabric according to claim 1, characterized in that: Slide grooves are provided on both sides of the outer surface of the coarse filtration tank, a slide rod is fixedly installed inside the slide groove, a spring is sleeved on one side of the outer surface of the slide rod, a moving device is sleeved on the other side of the outer surface of the slide rod, a scraper is fixedly connected to one side of the moving device, and a pressure plate is provided on one side of the surface of the moving device.

10. The device for treating wastewater after dyeing of high elastic fabric according to claim 9, characterized in that: The moving device includes a slider, a vertical block, a horizontal block and a connecting rod. The slider is slidably installed on the outer surface of the slider, the vertical block is fixedly installed on the top of the slider, the horizontal block is fixedly connected to one side of the vertical block, and the connecting rod is fixedly connected to the bottom end of the horizontal block.

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