Efficient energy-saving type textile wastewater multi-stage treatment device

Abstract

The application belongs to the field of multi-stage treatment of textile wastewater, in particular to a high-efficiency energy-saving multi-stage textile wastewater treatment device, which comprises a regulating tank, a wastewater pipe is arranged above the rear end of the regulating tank, two separation tanks are arranged in the regulating tank, the two separation tanks are connected through multiple communication pipes, a rotatable stirring table is arranged at the inner bottom of the separation tank, multiple fan blades are fixedly connected to the outer side of the stirring table, a dissolved air flotation module is installed at the front end of the regulating tank, through the above arrangement, the multi-stage treatment effect of wastewater is realized, the treatment process of multiple batches of different textile wastewater is effectively adapted, the pollution degree of wastewater injected into the treatment equipment each time can be ensured to be the same, the subsequent treatment device can work smoothly, and wastewater can also be discharged to the subsequent equipment at a constant rate, thereby reducing the problem of excessive load of the treatment device at high water volume.

Description

Technical Field

[0001] The invention belongs to the field of multi-stage treatment of textile wastewater, in particular to a high-efficiency and energy-saving multi-stage treatment device for textile wastewater. Background Art

[0002] Textile wastewater refers to various wastewaters generated in the spinning and weaving process. Textile industry wastewater generally contains pollutants such as suspended matter, grease, fiber debris, surfactants and various dyes, and needs to be treated before it can be discharged.

[0003] Since there are many types of pollutants in textile wastewater, it is impossible to remove all pollutants in the wastewater through a single process. Therefore, it generally needs to be processed by multiple devices to complete the cleaning process and meet the required discharge conditions.

[0004] Traditional treatment devices have relatively simple functions and can often only treat wastewater with a constant flow rate and constant pollution level. However, textile wastewater exists in many different stages of the textile process, which makes the pollution level and emission volume of each batch of textile wastewater different. Traditional equipment is difficult to fully carry out harmless treatment.

[0005] To this end, the present invention provides a high-efficiency and energy-saving multi-stage treatment device for textile wastewater. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the high-efficiency and energy-saving multi-stage treatment device for textile wastewater described in the present invention comprises a regulating tank, a wastewater pipe is provided above the rear end of the regulating tank, two separation tanks are provided inside the regulating tank, and the two separation tanks are connected by multiple connecting pipes, a rotatable stirring platform is provided at the inner bottom of the separation tank, a plurality of fan blades are fixed to the outer side of the stirring platform, a dissolved air flotation module is installed at the front end of the regulating tank, a conveyor belt arranged in an annular shape is provided on the outer side of the regulating tank, a plurality of hollow holes are provided on the belt surface of the conveyor belt, two rotatable deflection plates are installed between the two separation tanks, the regulating tank and the dissolved air flotation module are connected by a transmission pipe, a receiving cover for receiving water flow from the wastewater pipe is provided below the conveyor belt, and the receiving cover is connected to one of the separation tanks;

[0008] The textile wastewater that needs to be treated is discharged from top to bottom onto the conveyor belt through the wastewater pipe. Due to the hollow holes on the surface of the conveyor belt, large-volume impurities such as textile fibers in the wastewater will be blocked above the conveyor belt, and the conveyor belt will continue to move, which will continuously carry the impurities away from their original position, so that large-volume impurities can be continuously filtered. The wastewater after the first-level filtration is received by the receiving cover and injected into one of the separation tanks. As the wastewater accumulates in the separation tank, part of the wastewater will enter another separation tank through the connecting pipe; pollutants in textiles generally include floating objects and sediments, large-density pollutants are precipitated, and low-density pollutants float; the connecting pipe will transfer the wastewater from the middle position of the wastewater The wastewater in the two separation tanks is moved to another separation tank, and the wastewater in the middle has fewer pollutants, so the pollution levels of the wastewater in the two separation tanks will be different; then the wastewater with different pollution levels will be discharged into the transmission pipe at different rates. When the pollution level of the wastewater in this batch is large, the discharge volume of the wastewater in the low-pollution separation tank will be increased; when the pollution level of the wastewater in the batch is small, the discharge volume of the low-pollution separation tank will be reduced; ensure that the mixed wastewater in the transmission pipe is always at the same level of pollution, and can also control the wastewater to be discharged to subsequent equipment at a constant rate, thereby completing the secondary treatment of the wastewater; through this setting, it can be ensured that the pollution level of the wastewater injected into the transmission pipe each time is the same At the same time, the subsequent treatment devices can work smoothly; when the wastewater in the low-pollution separation tank is consumed quickly and backflow occurs, the stirring table is started to rotate, and the fan blades are used to increase the stirring effect to ensure that the pollutants in the wastewater in the two separation tanks are more evenly dispersed; when the pollution level of the wastewater entering the regulating tank twice is too different, such as: the pollution level of the wastewater entering the regulating tank for the first time is low, and the pollution level of the wastewater entering the regulating tank for the second time is high, the deflection plate can be opened to mix the wastewater entering twice. Then, during the second wastewater entry process, the two separation tanks will gradually become one side with high pollution level and the other side with low pollution level, ensuring the subsequent Normal discharge work; the wastewater discharged in the transmission pipe will combine with the flocculant and enter the dissolved air flotation module for treatment after combination, thereby completing the tertiary treatment of the wastewater. The large volume of sediment will settle from the bottom of the dissolved air flotation module and wait for subsequent discharge. The small volume particles will move upward under the action of flotation and float on the water surface; after the conveyor belt is continuously running, the belt will move a circle on the top surface and then transfer to the bottom, so that the large volume of fibers isolated on the top surface fall under the action of gravity, so that the conveyor belt can continuously isolate the large volume of fibers. Through this setting, not only the multi-stage treatment effect of wastewater is achieved, but also it effectively adapts to the treatment process of multiple batches of different textile wastewater.

[0009] Preferably, a cleaning box is arranged below the end of the conveying belt, the top of the cleaning box is arranged in an open manner, a plurality of flat baffles are fixedly connected to the belt of the conveying belt, the cleaning box can receive the bulk fibers sliding out from the end of the conveying belt, a pneumatic device can be installed in the cleaning box to blow air to the bottom of the conveying belt to assist the falling process of the fibers, at the same time, the bottom of the conveying belt is moved to above the dissolved air flotation module, the baffles on the surface of the belt can clean the floating impurities on the surface of the dissolved air flotation module to the side, thereby ensuring the long-term working effect of the dissolved air flotation module.

[0010] Preferably, the highest points of the plurality of communication pipes are different in height, the communication pipes are arranged in a bent manner, a speed reducer motor for controlling the rotation of the deflection plate is installed at the bottom of the adjusting tank, and the top of the deflection plate is rotatably connected to the adjusting tank by a support at one end. When the inflow of the wastewater is large, the water level in the adjusting tank gradually rises. Due to the different heights of the plurality of communication pipes, the efficiency of the flow between the two separation tanks will be higher as the water level rises. And because the communication pipes are in a bent shape, water can be introduced from the middle of the separation tank to the other separation tank, thereby avoiding the bottom sediment and the top floating, and ensuring that the wastewater pollution rate in the other separation tank is low.

[0011] Preferably, a plurality of drainage valves two are arranged on the surface of the stirring table from top to bottom, a drainage valve one is fixedly connected to the bottom of the adjusting tank, a one-way pipe is arranged at the bottom of the stirring table, a circular pipe is fixedly connected to the bottom of the stirring table, the circular pipe is rotatably connected to the top of the one-way pipe, the drainage valve one is in communication with the one-way pipe, a mixed detection pipe is connected between the two one-way pipes, and the mixed detection pipe is in communication with a transmission pipe. The plurality of drainage valves two can transfer wastewater from different levels of wastewater. The wastewater pollutants in the middle position are the least. Even in the separation tank in the high pollution area, the wastewater of the required concentration can be continuously taken away according to the needs. The remaining high-pollution wastewater can be mixed with the next batch of low-pollution wastewater and then discharged. The drainage valve one can directly extract the wastewater from the bottom. The one-way pipes are in one-way outward drainage and will not backflow. A non-contact detection module is arranged in the mixed detection pipe. An infrared light suspended matter detection module can be used to detect the suspended matter content in the wastewater to determine the pollution degree.

[0012] Preferably, drive motors are arranged at the two sides of the adjusting tank, drive discs are fixedly connected to the outer sides of the bottom circular pipes of the stirring tables, a transmission belt is sleeved between the two drive discs, one of the drive discs is driven to rotate by the rotation of the drive motor, the other drive disc is driven to rotate through the transmission belt, and then the circular pipes and the stirring tables are driven to rotate. In this way, the stirring table can be rotated, and the wastewater can be discharged outward at the same time.

[0013] Preferably, two liquid pumps are fixedly connected to the top of the regulating tank, and a retractable extension pipe is installed at the bottom of the liquid pump. The output end of the liquid pump is arranged horizontally outward, and the output end of the liquid pump is located above the conveyor belt. The floating objects in the wastewater in the separation tank can be absorbed by the extension pipe. The extension pipe can be extended downward according to the height of the water surface, and the liquid pump is started to extract part of the waste liquid at the top. The extracted waste liquid is discharged outward onto the conveyor belt, and the floating filtrate can be filtered again, thereby reducing the floating objects in the wastewater.

[0014] Preferably, the separation tank is provided with a floating plate that can move up and down, a plurality of through holes are opened on the surface of the floating plate, the four corners of the separation tank are rounded, the floating plate is located below the extension tube, and the floating plate will change with the height of the water level. By periodically starting the mixing table, the water in the separation tank rotates, and floating objects on the water surface will be blocked when passing through the floating plate. In this way, even if the extension tube only absorbs at one place, all floating objects can be cleaned up.

[0015] Preferably, two movable rails are provided inside the separation tank, and the movable rails are arranged vertically. Both ends of the floating plate are slidably engaged with the movable rails. The arrangement of the movable rails allows the floating plate to slide up and down stably.

[0016] Preferably, the interior of the float is hollow, and a flat floating block is fixed to the middle of the float. The floating block can provide buoyancy to the float, and the floating block is located in the middle of the float, so that the middle of the float is located on the water surface, which can effectively block floating objects.

[0017] Preferably, one end of the dissolved air flotation module is fixedly connected to a recovery box, the top of the recovery box is open, and the edge of the top surface of the recovery box is fixedly connected to a friction strip. The movement of the conveyor belt will push the floating objects on the surface of the dissolved air flotation module into the recovery box, and the friction strip can rub the bottom of the conveyor belt to help them fall off.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The high-efficiency and energy-saving multi-stage textile wastewater treatment device described in the present invention not only achieves a multi-stage treatment effect on wastewater, but also effectively adapts to the treatment process of multiple batches of different textile wastewater. It can ensure that the pollution level of the wastewater injected into the treatment equipment is the same each time, allowing subsequent treatment devices to work smoothly. It can also control the wastewater to be discharged to subsequent equipment at a constant rate, reducing the problem of overload of the treatment device when the water volume is high.

[0020] 2. The present invention discloses a high-efficiency, energy-saving multi-stage textile wastewater treatment device. The cleaning box can receive large-volume fibers that slide outward from the end of the conveyor belt. Pneumatic equipment can be installed inside the cleaning box to blow air toward the bottom of the conveyor belt to assist in the fiber shedding process. At the same time, the bottom of the conveyor belt will move above the dissolved air flotation module. The partition on the surface of the belt can clear the debris floating on the surface of the dissolved air flotation module to one side, thereby ensuring the long-term working effect of the dissolved air flotation module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 is a perspective view of the present invention;

[0023] Figure 2 It is a three-dimensional diagram of the regulating tank of the present invention;

[0024] Figure 3 It is a three-dimensional diagram of the regulating tank and the receiving cover of the present invention;

[0025] Figure 4 is a cross-sectional view of the regulating tank of the present invention;

[0026] Figure 5 is a perspective view of a floating plate of the present invention;

[0027] Figure 6 is a top view of the separation tank of the present invention;

[0028] Figure 7 is a stereoscopic diagram of the mixing detection tube of the present invention;

[0029] In the figure: 1. Equalization tank; 2. Conveyor belt; 3. Partition; 4. Wastewater pipe; 5. Liquid pump; 6. Cleaning box; 7. Drive motor; 8. Dissolved air flotation module; 9. Recovery box; 11. Transmission pipe; 12. Mixing detection tube; 13. Separation tank; 14. Connecting pipe; 15. Receiving cover; 16. Extension pipe; 17. Deflection plate; 18. Mixing table; 19. Fan blade; 20. Moving rail; 21. Float; 22. Drain valve 1; 23. Transmission belt; 24. One-way pipe; 25. Drain valve 2. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] like Figures 1 to 7As shown, an efficient and energy-saving multi-stage treatment device for textile wastewater according to an embodiment of the present invention comprises a regulating tank 1, a wastewater pipe 4 is provided above the regulating tank 1 near the rear end, two separation tanks 13 are provided inside the regulating tank 1, and the two separation tanks 13 are connected by a plurality of connecting pipes 14, a rotatable stirring platform 18 is provided at the inner bottom of the separation tank 13, and a plurality of fan blades 19 are fixed to the outside of the stirring platform 18, a dissolved air flotation module 8 is installed at the front end of the regulating tank 1, a conveyor belt 2 arranged in an annular shape is provided on the outside of the regulating tank 1 near the top, a plurality of hollow holes are provided on the belt surface of the conveyor belt 2, two rotatable deflection plates 17 are installed between the two separation tanks 13, the regulating tank 1 is connected to the dissolved air flotation module 8 through a transmission pipe 11, and a receiving cover 15 for receiving the water flow of the wastewater pipe 4 is provided below the conveyor belt 2, and the receiving cover 15 is connected to one of the separation tanks 13;

[0032] The textile wastewater that needs to be treated is discharged from top to bottom onto the conveyor belt 2 through the wastewater pipe 4. Due to the hollow holes on the belt surface of the conveyor belt 2, large-volume impurities such as textile fibers in the wastewater will be blocked above the conveyor belt 2, and the conveyor belt 2 keeps moving, which will continuously carry the impurities away from their original position, so that large-volume impurities can be continuously filtered. The wastewater after the first-level filtration is received by the receiving cover 15 and injected into one of the separation tanks 13. As the wastewater accumulates in the separation tank 13, part of the wastewater will enter another separation tank 13 through the connecting pipe 14; the pollutants in the textiles generally include floating objects and sediments, with large-density pollutants precipitating and low-density pollutants floating; the connecting pipe 14 will collect the pollutants from the middle position of the wastewater. The wastewater is transferred to another separation tank 13, and the wastewater in the middle has fewer pollutants, so the pollution levels of the wastewater in the two separation tanks 13 are different; then the wastewater with different pollution levels is discharged into the transmission pipe 11 at different rates. When the pollution level of the wastewater in this batch is relatively high, the discharge volume of the wastewater in the low-pollution separation tank 13 is increased, and when the pollution level of the wastewater in the batch is relatively low, the discharge volume of the low-pollution separation tank 13 is reduced; ensure that the mixed wastewater in the transmission pipe 11 is always at the same level of pollution, and can also control the wastewater to be discharged to subsequent equipment at a constant rate, thereby completing the secondary treatment of the wastewater; through this setting, it can be ensured that the pollution level of the wastewater injected into the transmission pipe 11 each time is relatively low. The degree of pollution is the same, so that the subsequent treatment device can work smoothly; when the wastewater in the low-pollution separation tank 13 is consumed faster and backflow occurs, the stirring table 18 is started to rotate, and the fan blades 19 are used to increase the stirring effect to ensure that the pollutants in the wastewater in the two separation tanks 13 are more evenly dispersed; when the pollution level of the wastewater introduced into the regulating tank 1 twice is too different, such as: the pollution level of the wastewater introduced into the regulating tank 1 for the first time is low, and the pollution level of the wastewater introduced for the second time is high, the deflection plate 17 can be opened to mix the wastewater introduced twice, and then during the continued introduction of the second wastewater, the two separation tanks 13 will gradually become one side with a high pollution level and the other side with a low pollution level. Ensure subsequent normal discharge work; the wastewater discharged in the transmission pipe 11 will combine with the flocculant, and after combination, it enters the dissolved air flotation module 8 for treatment, thereby completing the tertiary treatment of the wastewater, and the large volume of sediment will settle from the bottom of the dissolved air flotation module 8, waiting for subsequent discharge, and the small volume particles will move upward under the action of flotation and float on the water surface; after the conveyor belt 2 is continuously running, the belt will move one circle on the top surface and then transfer to the bottom, so that the large volume fibers isolated on the top surface fall under the action of gravity, so that the conveyor belt 2 can continuously isolate the large volume fibers. Through this setting, not only the multi-stage treatment effect of the wastewater is achieved, but also it effectively adapts to the treatment process of multiple batches of different textile wastewater.

[0033] A cleaning box 6 is provided below the end of the conveyor belt 2. The top of the cleaning box 6 is open. A plurality of flat partitions 3 are fixed to the belt of the conveyor belt 2.

[0034] During operation, the cleaning box 6 can receive large-volume fibers that slide outward from the end of the conveyor belt 2. Pneumatic equipment can be installed inside the cleaning box 6 to blow air to the bottom of the conveyor belt 2 to assist in the fiber shedding process. At the same time, the bottom of the conveyor belt 2 will move to the top of the dissolved air flotation module 8. The partition 3 on the surface of the belt can clean the debris floating on the surface of the dissolved air flotation module 8 to one side, thereby ensuring the long-term working effect of the dissolved air flotation module 8.

[0035] The highest points of the multiple connecting pipes 14 are at different heights. The connecting pipes 14 are arranged in a bent shape. A reduction motor for controlling the rotation of the deflection plate 17 is installed at the bottom of the regulating tank 1. The top of the deflection plate 17 is rotatably connected to the regulating tank 1 through a bracket at one end.

[0036] During operation, when the amount of wastewater introduced is large, the water level in the regulating tank 1 will gradually rise. Since the heights of the multiple connecting pipes 14 are different, as the water level rises, the efficiency of the flow between the two separation tanks 13 will be higher. And since the connecting pipe 14 is in a bent shape, water can be introduced into another separation tank 13 from the middle of the separation tank 13, thereby avoiding sedimentation at the bottom and floating on the top surface, ensuring that the wastewater pollution rate in the other separation tank 13 is low.

[0037] The surface of the mixing platform 18 is provided with a plurality of drain valves 25 from top to bottom. A drain valve 1 22 is fixedly connected to the bottom of the regulating tank 1. A one-way pipe 24 is provided at the bottom of the mixing platform 18. A round pipe is fixedly connected to the bottom of the mixing platform 18. The round pipe is rotatably connected to the top of the one-way pipe 24. The drain valve 1 22 is connected to the one-way pipe 24. A mixing detection pipe 12 is connected between the two one-way pipes 24. The mixing detection pipe 12 is connected to the transmission pipe 11.

[0038] During operation, multiple drain valves 25 can transfer wastewater from different levels of wastewater. The wastewater in the middle position has the least pollutants. In this way, even in the separation tank 13 in the high-pollution area, wastewater of the required concentration can be continuously taken out according to demand. The remaining high-pollution wastewater can wait for the next batch of low-pollution wastewater to be mixed before being discharged. The drain valve 1 22 can directly extract the wastewater from the bottom, and the one-way pipe 24 drains the wastewater in one direction without backflow. A contactless detection module is provided in the mixing detection tube 12, and an infrared light suspended matter detection module can be used to detect the suspended matter content in the wastewater to judge the degree of pollution.

[0039] A drive motor 7 is provided on both sides of the regulating tank 1. A transmission disc is fixedly connected to the output end of the drive motor 7 and the outer side of the bottom circular tube of the mixing platform 18. A transmission belt 23 is sleeved between the two transmission discs.

[0040] During operation, the driving motor 7 rotates, driving one of the transmission discs to rotate, and then driving the other transmission disc to rotate through the transmission belt 23, and then driving the round pipe and the mixing table 18 to rotate, so that the mixing table 18 can rotate and the wastewater can be discharged outward at the same time.

[0041] Two liquid pumps 5 are fixedly connected to the top of the regulating tank 1. A retractable extension tube 16 is installed at the bottom of the liquid pump 5. The output end of the liquid pump 5 is arranged horizontally outward and is located above the conveyor belt 2.

[0042] During operation, floating objects in the wastewater in the separation tank 13 can be absorbed by the extension pipe 16. The extension pipe 16 can be extended downward according to the height of the water surface, and the liquid extraction pump 5 is started to extract part of the waste liquid at the top. The extracted waste liquid is discharged outward onto the conveyor belt 2, and the floating filtered matter can be filtered again, thereby reducing the floating objects in the wastewater.

[0043] The separation tank 13 is provided with a floating plate 21 that can move up and down. The surface of the floating plate 21 is provided with a plurality of through holes. The four corners of the separation tank 13 are rounded. The floating plate 21 is located below the extension tube 16.

[0044] During operation, the float plate 21 will change with the height of the water level. Through the periodic activation of the stirring platform 18, the water in the separation tank 13 will rotate, and floating objects on the water surface will be blocked when passing through the float plate 21. In this way, even if the extension tube 16 only absorbs at one place, all floating objects can be cleaned up.

[0045] Two movable rails 20 are provided inside the separation tank 13. The movable rails 20 are provided vertically. Both ends of the floating plate 21 are slidably engaged with the movable rails 20. During operation, the setting of the movable rails 20 allows the floating plate 21 to slide up and down stably.

[0046] The interior of the floating plate 21 is hollow, and a flat floating block is fixedly connected to the middle of the floating plate 21;

[0047] During operation, the floating block can provide buoyancy to the floating plate 21, and the floating block is located in the middle of the floating plate 21, so that the middle of the floating plate 21 is located on the water surface, which can effectively block floating objects.

[0048] One end of the dissolved air flotation module 8 is fixedly connected to a recovery box 9, the top of the recovery box 9 is open, and a friction strip is fixedly connected to the edge of the top surface of the recovery box 9;

[0049] During operation, the movement of the conveyor belt 2 will push the floating objects on the surface of the dissolved air flotation module 8 into the recovery box 9, and the friction strips can rub the bottom of the conveyor belt 2 to help them fall off.

[0050] In operation, the textile wastewater to be treated is discharged from the wastewater pipe 4 onto the conveyor belt 2 from top to bottom. Due to the hollow holes on the surface of the conveyor belt 2, the bulky impurities in the wastewater are blocked above the conveyor belt 2. The conveyor belt 2 continuously moves, which continuously removes the impurities from the original position, thereby continuously filtering the bulky impurities. The wastewater after the first-stage filtration is received by the receiving cover 15 and injected into one of the separation tanks 13. As the wastewater accumulates in the separation tank 13, part of the wastewater enters the other separation tank 13 through the communication pipe 14. The pollutants in the textile products generally include floating and precipitated substances, and the high-density pollutants precipitate and the low-density pollutants float. The communication pipe 14 transfers the wastewater from the middle position of the wastewater to the other separation tank 13, and the middle wastewater has fewer pollutants, so the wastewater in the two separation tanks 13 has different pollution levels. Then the wastewater with different pollution levels is discharged into the transmission pipe 11 at different rates. When the wastewater in the batch has a large pollution level, the discharge amount of the wastewater in the low-pollution separation tank 13 is increased, and when the wastewater in the batch has a small pollution level, the discharge amount of the low-pollution separation tank 13 is reduced. The mixed wastewater in the transmission pipe 11 is always at the same pollution level, and the wastewater can also be discharged at a constant rate to the subsequent equipment, thereby completing the second-stage treatment of the wastewater. Through this arrangement, the pollution level of the wastewater injected into the transmission pipe 11 each time can be ensured to be the same, so that the subsequent treatment device can work smoothly. When the wastewater in the low-pollution separation tank 13 is consumed quickly and backflow occurs, the stirring table 18 is started to rotate, and the fan blade 19 is used to increase the stirring effect, so that the pollutants in the wastewater in the two separation tanks 13 are uniformly dispersed. When the pollution levels of the wastewater entering the adjustment tank 1 twice are too different, for example, the pollution level of the wastewater entering the adjustment tank 1 the first time is low, and the pollution level of the wastewater entering the second time is high. The deflection plate 17 can be opened to mix the wastewater entering twice, and then during the continuous entry of the second wastewater, the two separation tanks 13 gradually become one side with a high pollution level and the other side with a low pollution level, thereby ensuring the normal discharge work. The wastewater discharged from the transmission pipe 11 combines with the flocculating agent and enters the dissolved air flotation module 8 for treatment, thereby completing the third-stage treatment of the wastewater. The bulky precipitates are precipitated from the bottom of the dissolved air flotation module 8 and are discharged later. The small particles move upward under the action of air flotation and float on the water surface. After the conveyor belt 2 continuously operates, the belt moves one circle on the top surface and then moves to the bottom, so that the bulky fibers isolated on the top surface fall under the action of gravity. In this way, the conveyor belt 2 can continuously isolate the bulky fibers. Through this arrangement, the multi-stage treatment effect of the wastewater is achieved, and the treatment process of different batches of textile wastewater is effectively adapted.

[0051] The cleaning box 6 can receive the bulk fibers falling from the end of the conveying belt 2, and the interior of the cleaning box 6 can be provided with a pneumatic device for blowing air to the bottom of the conveying belt 2 to assist the falling process of the fibers, and meanwhile, the bottom of the conveying belt 2 can be moved to the upper side of the dissolved air flotation module 8, and the partition plate 3 on the surface of the conveying belt can clean the floating sundries on the surface of the dissolved air flotation module 8 to the side, thereby ensuring the long-term working effect of the dissolved air flotation module 8;

[0052] When the amount of the waste water is large, the water level in the adjusting tank 1 will gradually rise, and due to the different heights of the plurality of communication pipes 14, the flow efficiency between the two separation tanks 13 will be higher as the water level rises, and due to the bending shape of the communication pipe 14, the water can be introduced from the middle part of the separation tank 13 to the other separation tank 13, thereby avoiding the bottom sediment and the top floating, and ensuring that the waste water in the other separation tank 13 has a low pollution rate;

[0053] The plurality of drainage valves two 25 can transfer the waste water from different levels of the waste water, and the waste water in the middle position has the least pollutants, so that even in the separation tank 13 in the high pollution area, the waste water with the required concentration can be continuously taken away according to the needs, and the remaining waste water with high pollution degree can be mixed with the next batch of low pollution waste water and then discharged, the drainage valve one 22 can directly discharge the waste water from the bottom, and the one-way pipe 24 can only discharge water outward in one direction without backflow; The non-contact detection module is arranged in the mixed detection pipe 12, and an infrared light suspended matter detection module can be used to detect the suspended matter content in the waste water to determine the pollution degree;

[0054] The driving motor 7 is rotated to drive one of the transmission discs to rotate, and the transmission belt 23 drives the other transmission disc to rotate, and then drives the circular pipe and the stirring table 18 to rotate, so that the stirring table 18 can rotate and the waste water can be discharged outward at the same time.

[0055] The floating matter in the waste water in the separation tank 13 can be absorbed by the extension pipe 16, and the extension pipe 16 can be extended downward according to the height of the water surface, and the liquid pump 5 is started to discharge the part of the waste liquid at the top outward, and the discharged waste liquid is discharged to the conveying belt 2, so that the floating filter material can be filtered again, thereby reducing the floating matter in the waste water;

[0056] The floating plate 21 can change with the height of the water level, and the water in the separation tank 13 is rotated by the periodic starting of the stirring table 18, and the floating matter on the water surface is blocked when passing through the floating plate 21, so that all the floating matter can be cleaned even if the extension pipe 16 only absorbs at one place;

[0057] The floating block can provide buoyancy for the floating plate 21, and the floating block is located in the middle of the floating plate 21, so that the middle of the floating plate 21 is located on the water surface, thereby effectively blocking the floating matter.

[0058] The movement of the conveyor belt 2 will push the floating objects on the surface of the dissolved air flotation module 8 into the recovery box 9, and the friction strips can rub the bottom of the conveyor belt 2 to help them fall off.

[0059] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency and energy-saving multi-stage textile wastewater treatment device, characterized by: The utility model comprises a regulating tank, wherein a waste water pipe is provided above the regulating tank near the rear end, two separation tanks are provided inside the regulating tank, and the two separation tanks are connected by a plurality of connecting pipes, a rotatable stirring platform is provided at the inner bottom of the separation tank, a plurality of fan blades are fixedly connected to the outer side of the stirring platform, a dissolved air flotation module is installed at the front end of the regulating tank, a conveyor belt arranged in an annular shape is provided on the outer side of the regulating tank near the top, a plurality of hollow holes are provided on the belt surface of the conveyor belt, two rotatable deflection plates are installed between the two separation tanks, the regulating tank and the dissolved air flotation module are connected by a transmission pipe, a receiving cover for receiving water flow from the waste water pipe is provided below the conveyor belt, and the receiving cover is connected to one of the separation tanks; A cleaning box is provided below the end of the conveyor belt, the top of the cleaning box is open, and a plurality of flat partitions are fixedly connected to the belt of the conveyor belt; The highest points of the multiple connecting pipes are at different heights. The connecting pipes are arranged in a bent shape. A reduction motor for controlling the rotation of the deflection plate is installed at the bottom of the regulating tank. The top of the deflection plate is rotatably connected to the regulating tank through a bracket at one end. The surface of the mixing platform is provided with a plurality of drain valves 2 from top to bottom, the bottom of the regulating tank is fixedly connected to a drain valve 1, the bottom of the mixing platform is provided with a one-way pipe, the bottom of the mixing platform is fixedly connected to a round pipe, the round pipe is rotatably connected to the top of the one-way pipe, the drain valve 1 is connected to the one-way pipe, a mixing detection pipe is connected between the two one-way pipes, and the mixing detection pipe is connected to the transmission pipe; The textile wastewater that needs to be treated is discharged from top to bottom through the wastewater pipe to the conveyor belt. The wastewater after primary filtration is received by the receiving cover and injected into one of the separation tanks. As the wastewater accumulates in the separation tank, part of the wastewater will enter the other separation tank through the connecting pipe; Afterwards, wastewater with different pollution levels is discharged into the transmission pipe at different rates. The mixed wastewater in the transmission pipe is always at the same level of pollution, and the wastewater is controlled to be discharged into subsequent equipment at a constant rate, thereby completing the secondary treatment of the wastewater.

2. The high-efficiency and energy-saving multi-stage textile wastewater treatment device according to claim 1 is characterized in that: Drive motors are provided on both sides of the regulating tank. The output end of the drive motor and the outer side of the bottom circular tube of the mixing platform are fixedly connected with transmission discs, and a transmission belt is sleeved between the two transmission discs.

3. The high-efficiency and energy-saving multi-stage textile wastewater treatment device according to claim 2 is characterized in that: Two liquid pumps are fixedly connected to the top of the regulating tank, and a telescopic extension tube is installed at the bottom of the liquid pump. The output end of the liquid pump is arranged horizontally outward and is located above the conveyor belt.

4. The high-efficiency and energy-saving multi-stage textile wastewater treatment device according to claim 3 is characterized by: The separation tank is provided with a floating plate capable of moving up and down, a plurality of through holes are opened on the surface of the floating plate, the four corners of the separation tank are rounded, and the floating plate is located below the extension tube.

5. The high-efficiency and energy-saving multi-stage textile wastewater treatment device according to claim 4 is characterized in that: Two movable rails are arranged inside the separation tank. The movable rails are arranged vertically, and both ends of the floating plate are slidably engaged with the movable rails.

6. The high-efficiency and energy-saving multi-stage textile wastewater treatment device according to claim 5 is characterized in that: The interior of the floating plate is hollow, and a flat floating block is fixedly connected to the middle of the floating plate.

7. The high-efficiency and energy-saving multi-stage textile wastewater treatment device according to claim 6 is characterized in that: One end of the dissolved air flotation module is fixedly connected to a recovery box, the top of the recovery box is open, and a friction strip is fixedly connected to the edge of the top surface of the recovery box.

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