Multistage dynamic flow field layered treatment device for textile wastewater

Abstract

The invention relates to a multistage dynamic flow field layered treatment device for textile wastewater, and discloses a treatment device which is used for stirring sewage through a filter tank and a filter assembly to form turbulent flow for layered filtration and repeatedly washing a filter screen through a reaction assembly so as to improve the filter effect. The device is characterized by comprising a filter tank, a filter assembly and a reaction assembly, the filter assembly is arranged in the filter tank, the filter assembly is sequentially provided with a first layer filter screen, a second layer filter screen and a third layer filter screen from top to bottom, the first layer filter screen, the second layer filter screen and the third layer filter screen are different in rotating speed, and the filter screens form different dynamic flow fields in the filtering process. The contact opportunity and mode of the wastewater and the filter screen are increased, the filtering effect on impurities in the wastewater is improved, the reaction assembly feeds tiny bubbles into the wastewater, dissolved oxygen is increased to promote decomposition of organic pollutants and floating of suspended particles, the filter screen can be repeatedly washed, and blockage is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of multi-stage dynamic flow field layered treatment device of textile wastewater, which can filter sewage multiple times, belongs to wastewater filtration technical field, especially relates to a kind of layered filtration by filtering pool and filter assembly stirring sewage to form turbulent flow, by reaction component repeatedly washing filter screen, to improve the filtering effect of processing device. BACKGROUND

[0002] In the field of wastewater treatment in textile industry, the traditional wastewater treatment device has many shortcomings. On the one hand, most of the devices are equipped with only a single filter screen or simple filter screen levels, which cannot effectively grade filter different particle sizes of impurities, resulting in large particles in wastewater easily clogging the filter screen, while small particles cannot be fully intercepted, the overall filtration effect is poor, and the effluent quality is difficult to meet high standards, which seriously affects subsequent reuse or discharge. On the other hand, wastewater flows relatively smoothly on the surface of the filter screen, and the intercepted impurities cannot be washed away in time. When impurities accumulate, the effective filtration area of the filter screen gradually decreases, and the resistance of water flow through the filter screen increases, resulting in a significant decrease in filtration speed. At the same time, the accumulation of impurities can also cause local clogging of the filter screen, making wastewater unable to flow evenly through the filter screen for filtration, which not only seriously affects the filtration effect, but also reduces the service life of the filter screen.

[0003] Publication No. CN220443321U discloses a sewage filtration device, which comprises a housing, a filter assembly and a plurality of nozzles. The housing has a cavity inside, the filter assembly is arranged in the cavity, and the nozzles are arranged in the cavity and spaced along the circumference of the housing. The nozzles face the filter assembly and are located downstream of the filter assembly in the direction of the water flow. However, when the above-mentioned sewage filtration device is working, the wastewater flows relatively smoothly on the surface of the filter screen, and the intercepted impurities cannot be washed away in time. The accumulation of impurities can easily cause local clogging of the filter screen, making wastewater unable to flow evenly through the filter screen for filtration, which seriously affects the filtration effect. SUMMARY

[0004] In order to improve the above situation, the present application provides a kind of multi-stage dynamic flow field layered treatment device of textile wastewater, which can form turbulent flow by filtering pool and filter assembly stirring sewage for layered filtration, and repeatedly washing filter screen by reaction component, to improve the filtering effect of processing device.

[0005] The present application relates to a kind of multi-stage dynamic flow field layered treatment device of textile wastewater, which can filter sewage multiple times, belongs to wastewater filtration technical field, especially relates to a kind of layered filtration by filtering pool and filter assembly stirring sewage to form turbulent flow, by reaction component repeatedly washing filter screen, to improve the filtering effect of processing device. Its characterized in that, the filter assembly is placed in the filter tank, the filter assembly is sequentially provided with the first layer filter screen, the second layer filter screen and the third layer filter screen with different rotating speeds from top to bottom, each layer filter screen forms different dynamic flow field in the filtering process, increases the contact opportunity and mode of waste water and filter screen, improves the filtering effect of impurities in waste water, the reaction assembly sends micro bubbles into waste water, increases dissolved oxygen to promote organic pollutants decomposition and suspended particles floating, can repeatedly flush the filter screen, avoids blockage, The filter tank is composed of a cylindrical top opening and a sealing cover, the sealing cover is threadedly connected with the cylindrical, The filter assembly is composed of a sewage inlet, a drainage outlet, a motor waterproof shell, a cross-shaped connecting rod, a planetary gear, a limiting rod, a transmission gear, a connecting rod, an external fixed gear, a third layer filter screen, a second layer filter screen, a first layer filter screen, filter holes and a stirring rod, The sewage inlet is connected with the filter tank near the top end side surface, and the sewage inlet is communicated with the filter tank, The drainage outlet is connected with the filter tank near the bottom end side surface, and the filter tank is communicated with the drainage outlet, The motor waterproof shell is fixedly arranged on the bottom surface of the filter tank, the motor waterproof shell is internally provided with a filter motor, the filter motor shaft penetrates through the top end of the motor waterproof shell, and a sealing bearing is arranged between the filter motor shaft and the motor waterproof shell, The cross-shaped connecting rod is fixedly arranged on the motor waterproof shell, The planetary gear shaft is rotationally connected with the cross-shaped connecting rod near one end, One end of the limiting rod is fixedly connected with the filter motor shaft in the motor waterproof shell, the limiting rod penetrates through the middle part of the cross-shaped connecting rod and extends upward to the other end, the diameter of the limiting rod near the top end is smaller than the diameter of other parts, and a limiting rib is arranged on the side surface of the limiting rod near the top end, The transmission gear is sleeved on the limiting rod, the inner side surface of the transmission gear is fixedly connected with the side surface of the limiting rod, and the transmission gear is in gear engagement with the planetary gear, The bottom end of the connecting rod is in an open structure, the inner side surface of the bottom end of the connecting rod is provided with a limiting groove, the connecting rod is plug-connected with the limiting rod through the limiting groove and the limiting rib, and the top end of the connecting rod is rotationally connected with the sealing cover of the filter tank, The filter tank is internally provided with a circular sliding groove near the bottom end, The external fixed gear is slidingly connected with the filter tank through the circular sliding groove, and the planetary gear is in gear engagement with the external fixed gear, The third layer filter screen is fixedly arranged on the external fixed gear, and a support bearing is arranged between the third layer filter screen and the limiting rod, Filter holes are formed in the third layer filter screen, and the filter holes are uniformly distributed on the third layer filter screen, The third layer filter screen is arranged above the drainage outlet in the height direction, The second layer filter screen is arranged on the side of the connecting rod and fixedly connected with the side of the connecting rod, The first layer filter screen is arranged on the side of the connecting rod and fixedly connected with the side of the connecting rod, The first layer filter screen, the second layer filter screen and the third layer filter screen are equidistantly arranged along the axial direction of the connecting rod, The stirring rod penetrates through the connecting rod, and the middle part of the stirring rod is connected with the connecting rod; a plurality of stirring rods are equidistantly arranged along the axial direction of the connecting rod, and two adjacent stirring rods are arranged perpendicularly, The stirring rod, the first layer filter screen and the second layer filter screen are not in contact, The reaction assembly is composed of an aeration pipe, an air pipe and an air pump, The aeration pipe is arranged in the filter tank and placed close to the bottom end; the aeration pipe is composed of a hollow circular ring and a plurality of cylinders; the cylinders are arranged on the top of the hollow circular ring and communicate with the hollow circular ring; and the plurality of cylinders are equidistantly arranged along the circumferential direction of the hollow circular ring, One end of the air pipe is connected with the hollow circular ring of the aeration pipe, and the air pipe communicates with the aeration pipe; a one-way valve is arranged on the air pipe close to a section, The other end of the air pipe is arranged outside the filter tank and connected with the air outlet hole of the air pump; and a sealing ring is arranged between the air pipe and the filter tank. Beneficial effects

[0006] I. The different particle size impurities are subjected to grading filtration, and the filtration effect and precision are significantly improved.

[0007] II. The mixing and decomposition of the pollutants and the aeration gas are effectively promoted, and the wastewater treatment efficiency is improved.

[0008] III. The filter screen is continuously flushed, the excessive accumulation of impurities is avoided, and the filtration speed is improved. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a perspective view of the textile wastewater multi-stage dynamic flow field layered treatment device of the present application; Figure 2 It is a perspective view of the textile wastewater multi-stage dynamic flow field layered treatment device of the present application. DRAWINGS

[0010] Among them are: filter tank (1), sewage inlet (2), air pump (3), air pipe (4), drain (5), connecting rod (6), stirring rod (7), first layer filter screen (8), second layer filter screen (9), third layer filter screen (10), external fixed gear (11), aeration pipe (12), filter hole (13), cross-shaped connecting rod (14), motor waterproof shell (15), planetary gear (16), transmission gear (17), limiting rod (18). DETAILED DESCRIPTION Example 1

[0011] The multi-stage dynamic flow field stratified treatment device for textile wastewater of the present invention is implemented as follows: The multi-stage dynamic flow field stratified treatment device for textile wastewater of the present invention includes a filter tank (1), a filter assembly, and a reaction assembly. The filter assembly is characterized in that it is placed in a filter tank (1), and the filter assembly is arranged from top to bottom with a first layer of filter screen (8), a second layer of filter screen (9), and a third layer of filter screen (10) with different rotation speeds. Each layer of filter screen forms a different dynamic flow field during the filtration process, which increases the contact opportunities and methods between wastewater and filter screen, and improves the filtration effect on impurities in wastewater. The reaction component sends microbubbles into the wastewater to increase dissolved oxygen, promote the decomposition of organic pollutants and the floating of suspended particles, and can repeatedly wash the filter screen to avoid clogging. The filter tank (1) consists of a cylinder with an open top and a sealing cap, the sealing cap being threadedly connected to the cylinder. The filter assembly consists of a sewage inlet (2), a drain outlet (5), a motor waterproof housing (15), a cross-shaped connecting rod (14), a planetary gear (16), a limiting rod (18), a transmission gear (17), a connecting rod (6), an external fixed gear (11), a third layer filter screen (10), a second layer filter screen (9), a first layer filter screen (8), filter holes (13), and a stirring rod (7). The sewage inlet (2) is connected to the side of the filter tank (1) near the top, and the sewage inlet (2) communicates with the filter tank (1). The drain outlet (5) is connected to the side of the filter tank (1) near the bottom, and the filter tank (1) is connected to the drain outlet (5). A waterproof motor housing (15) is fixedly placed on the bottom surface of the filter tank (1). The waterproof motor housing (15) houses a filter motor. The motor shaft of the filter motor passes through the top of the waterproof motor housing (15), and a sealed bearing is placed between the motor shaft and the waterproof motor housing (15). Preferably, the waterproof housing (15) of the motor is made of highly corrosion-resistant stainless steel and has heat sinks on its inner wall. The cross-shaped connecting rod (14) is fixedly placed on the waterproof housing (15) of the motor. The planetary gear (16) axle is rotatably connected to the cross-shaped connecting rod (14) near one end. One end of the limiting rod (18) is fixedly connected to the motor shaft of the filter motor inside the waterproof housing (15) of the motor. The limiting rod (18) extends upward through the middle of the cross-shaped connecting rod (14) to the other end. The diameter of the limiting rod (18) near the top is smaller than the diameter of other parts. A limiting rib is provided on the side of the limiting rod (18) near the top. The transmission gear (17) is sleeved on the limiting rod (18), the inner side of the transmission gear (17) is fixedly connected with the side of the limiting rod (18), and the transmission gear (17) is in gear engagement with the planetary gear (16), The bottom end of the connecting rod (6) is of an open structure, the inner side of the bottom end of the connecting rod (6) is provided with a limiting groove, the connecting rod (6) is connected with the limiting rod (18) through the limiting groove and the limiting rib in plug connection, and the top end of the connecting rod (6) is rotationally connected with the sealing cover of the filter tank (1), The filter tank (1) is internally provided with a circular sliding groove close to the bottom end, The external fixed gear (11) is slidably connected with the filter tank (1) through the circular sliding groove, and the planetary gear (16) is in gear engagement with the external fixed gear (11), The third layer of filter screens (10) is fixedly arranged on the external fixed gear (11), and a support bearing is arranged between the third layer of filter screens (10) and the limiting rod (18), Preferably, the third layer of filter screens (10) is made of corrosion-resistant polytetrafluoroethylene material, The third layer of filter screens (10) is provided with filter holes (13), and the filter holes (13) are uniformly distributed on the third layer of filter screens (10), Preferably, the filter holes (13) are circular and the edges thereof are passivated, The third layer of filter screens (10) is arranged above the drain port (5) in the height direction, The second layer of filter screens (9) is sleeved on the side of the connecting rod (6) and fixedly connected with the side of the connecting rod (6), The first layer of filter screens (8) is sleeved on the side of the connecting rod (6) and fixedly connected with the side of the connecting rod (6), The first layer of filter screens (8), the second layer of filter screens (9) and the third layer of filter screens (10) are equidistantly arranged along the axial direction of the connecting rod (6), Preferably, the first layer of filter screens (8) is woven by stainless steel wires with a wire diameter of 0.2 mm, and the mesh holes thereof are rhombic, the second layer of filter screens (9) is made of high-strength nylon fibers with a fiber diameter of 0.1 mm, and the mesh holes thereof are regular hexagons, The stirring rods (7) pass through the connecting rod (6), the middle positions of the stirring rods (7) are connected with the connecting rod (6), a plurality of the stirring rods (7) are equidistantly arranged along the axial direction of the connecting rod (6), and adjacent two stirring rods (7) are arranged perpendicularly, Preferably, the stirring rods (7) are of a hollow structure, filled with a foaming material with a specific gravity less than that of water in the inside, and provided with spiral convex patterns on the surfaces thereof The stirring rods (7), the first layer of filter screens (8) and the second layer of filter screens (9) are not in contact, The reaction assembly is composed of an aeration pipe (12), an air pipe (4) and an air pump (3), The aeration pipe (12) is placed in the filter tank (1) and close to the bottom end, the aeration pipe (12) is composed of a hollow ring and a plurality of cylinders, the cylinders are placed on the top of the hollow ring, and the cylinders are communicated with the hollow ring, a plurality of the cylinders are equidistantly arranged along the circumference of the hollow ring, Preferably, the aeration pipe (12) is made of corrosion-resistant material, One end of the air pipe (4) is connected with the hollow ring of the aeration pipe (12), and the air pipe (4) is communicated with the aeration pipe (12), a one-way valve is arranged on the air pipe (4) close to a section, The other end of the air pipe (4) is placed outside the filter tank (1) and connected with the air outlet of the air pump (3), and a sealing ring is arranged between the air pipe (4) and the filter tank (1), In use, the textile wastewater flows into the filter tank (1) from the sewage inlet (2), the filter motor is started in the motor waterproof shell (15), the motor shaft drives the limiting rod (18) to rotate, the limiting rod (18) further drives the transmission gear (17) and the connecting rod (6) connected with the transmission gear (17) to rotate, the connecting rod (6) drives the first layer filter screen (8), the second layer filter screen (9) and the stirring rod (7) to rotate synchronously, at the same time, the transmission gear (17) drives the planetary gear (16) to rotate around the shaft of the transmission gear (17) and revolve around the limiting rod (18), the planetary gear (16) drives the external fixed gear (11) engaged with the planetary gear (16) to rotate in the circular sliding groove at the bottom of the filter tank (1), thereby driving the third layer filter screen (10) fixed on the external fixed gear (11) to rotate, and the rotating speed of the third layer filter screen (10) is less than that of the first layer filter screen (8) and the second layer filter screen (9), the wastewater is sequentially filtered by the first layer filter screen (8), the second layer filter screen (9) and the third layer filter screen (10), in the process, the stirring rod (7) rotates to form turbulent flow of the wastewater, increase the contact between the wastewater and the filter screen and the mixing of the pollutants and the aeration gas, at the same time, the air pump (3) is started, air is sent to the aeration pipe (12) placed at the bottom of the filter tank (1) through the air pipe (4), the air is dispersed into small bubbles through the hollow ring and the cylinders of the aeration pipe (12) and enters the wastewater, which increases the dissolved oxygen to promote the decomposition of organic pollutants and the floating of suspended particles to assist filtration, and finally the purified water flows out from the water outlet (5); The sewage inlet (2) is connected with the filter tank (1) close to the top end side, and the water outlet (5) is connected with the filter tank (1) close to the bottom end side, the wastewater enters from the top end, which can utilize the gravity to make the wastewater flow naturally, and the wastewater is filtered by the multiple layers of filter screens, which fully utilizes the filtering space, and the water outlet is at the bottom end, which is convenient for discharging the purified water after being fully filtered and treated, conforms to the principle of fluid mechanics, makes the wastewater have a good flow path in the filter tank, and improves the filtering efficiency; The design that the rotating speed of the third layer filter screen (10) is less than the rotating speed of the first layer filter screen (8) and the second layer filter screen (9) can make the different dynamic flow fields of the filter screens in the filtering process, increase the contact opportunity and mode of the wastewater and the filter screen, and improve the filtering effect. The first layer filter screen (8) is woven by stainless steel wires with a wire diameter of 0.2 mm, and the mesh hole is rhombic; the second layer filter screen (9) is made of high-strength nylon fibers with a fiber diameter of 0.1 mm, and the mesh hole is regular hexagonal; and the third layer filter screen (10) is made of corrosion-resistant polytetrafluoroethylene material, and the filter hole (13) is circular and the edge is passivated. The different materials and mesh hole designs realize the graded filtering of different particle size impurities in the wastewater. The stainless steel material of the first layer filter screen (8) has high strength and good corrosion resistance, and the rhombic mesh hole can effectively intercept larger particle impurities. The nylon fiber of the second layer filter screen (9) has good flexibility, and the regular hexagonal mesh hole can further filter smaller particles. The polytetrafluoroethylene material of the third layer filter screen (10) has high chemical stability, and the circular and edge passivated filter hole can prevent impurities from adhering, improve the filtering precision, and at the same time, the cooperation of the filter screens improves the overall filtering effect and efficiency. The stirring rod (7) is of a hollow structure, filled with a foam material with a specific gravity less than water, and provided with a spiral raised pattern on the surface. The hollow structure and the filling of the foam material reduce the weight of the stirring rod (7), reduce the load of the filtering motor, save energy, and the spiral raised pattern can enhance the stirring effect on the wastewater during stirring, make the wastewater form a stronger turbulent flow, increase the contact area and frequency of the wastewater and the filter screen, and at the same time, promote the full mixing of the pollutants in the wastewater and the aeration gas, improve the filtering and reaction efficiency. The aeration pipe (12) is made of corrosion-resistant material and is composed of a hollow circular ring and a plurality of cylinders. The cylinders are arranged equidistantly along the circumference of the hollow circular ring. The corrosion-resistant material can ensure that the aeration pipe is not corroded in the wastewater environment for a long time, prolonging its service life. The structure of the hollow circular ring and the plurality of cylinders can make the air uniformly dispersed into small bubbles into the wastewater, increase the dissolved oxygen content in the wastewater, provide a suitable living environment for aerobic microorganisms, and promote the decomposition of organic pollutants. At the same time, the rising of the bubbles can also drive the suspended particles to float, assisting the filtering process. The air pipe (4) is provided with a one-way valve near one end and a sealing ring between the air pipe (4) and the filter tank (1). The one-way valve can prevent wastewater from flowing back into the air pump (3), protecting the air pump from damage and prolonging the service life of the air pump. The sealing ring can prevent gas leakage, ensuring that all the air delivered by the air pump can enter the aeration pipe (12), improving the aeration efficiency and ensuring the normal operation of the reaction assembly.

[0012] The filtering tank (1) and the filtering assembly can form a turbulent flow by stirring the sewage, and the reaction assembly can repeatedly wash the filter screen, thereby improving the filtering effect.

[0013] It should be noted that unless otherwise explicitly specified and limited, the terms "placed", "connected", and "linked" should be understood broadly, for example, can be fixed connection modes such as folding connection, rivet connection, pin connection, bonding connection, and welding connection, or can be detachable connection modes such as threaded connection, buckle connection, and hinge connection, or integral connection, or electrical connection, or direct connection, or indirect connection through an intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0014] It should be further pointed out that in the description of the above specific embodiments, only the differences with other embodiments are described for simplicity and clarity, but those skilled in the art should know that the above specific embodiments themselves are also independent technical solutions.

Claims

1. A multi-stage dynamic flow field stratified treatment device for textile wastewater, comprising a filter tank, a filter assembly, and a reaction assembly, characterized in that: The filter assembly is placed in the filter tank. The filter assembly is arranged from top to bottom with a first layer of filter screen, a second layer of filter screen and a third layer of filter screen with different rotation speeds. Each layer of filter screen forms a different dynamic flow field during the filtration process, which increases the contact opportunities and methods between wastewater and filter screen, and improves the filtration effect on impurities in wastewater. The reaction component sends microbubbles into the wastewater to increase dissolved oxygen, promote the decomposition of organic pollutants and the floating of suspended particles, and can repeatedly wash the filter screen to avoid clogging.

2. The multi-stage dynamic flow field stratified treatment device for textile wastewater according to claim 1, characterized in that... The filter tank consists of a cylinder with an opening at the top and a sealing cap, the sealing cap being threadedly connected to the cylinder.

3. The multi-stage dynamic flow field stratified treatment device for textile wastewater according to claim 1, characterized in that... The filtration assembly consists of a sewage inlet, a drain outlet, a waterproof motor housing, a cross-shaped connecting rod, planetary gears, a limiting rod, a transmission gear, a connecting rod, an external fixed gear, a third layer filter screen, a second layer filter screen, a first layer filter screen, filter holes, and a stirring rod. The sewage inlet is connected to the side of the filtration tank near the top, and the drain outlet is connected to the side of the filtration tank near the bottom. The waterproof motor housing is fixedly placed on the bottom surface of the filtration tank, and a filter motor is built into the waterproof motor housing. The cross-shaped connecting rod is fixedly placed on the waterproof motor housing. The planetary gear shaft is rotatably connected to the cross-shaped connecting rod near one end. One end of the limiting rod is fixedly connected to the motor shaft of the filter motor inside the waterproof motor housing. The transmission gear is sleeved... On the limiting rod, the inner side of the transmission gear is fixedly connected to the side of the limiting rod, the transmission gear meshes with the planetary gear, the top of the connecting rod is rotatably connected to the filter tank sealing cover, the filter tank has a circular sliding groove near the bottom, the external fixed gear is slidably connected to the filter tank through the circular sliding groove, the planetary gear meshes with the external fixed gear, the third layer of filter screen is fixedly placed on the external fixed gear, the third layer of filter screen has filter holes, the second layer of filter screen is sleeved on the side of the connecting rod and fixedly connected to the side of the connecting rod, the first layer of filter screen is sleeved on the side of the connecting rod and fixedly connected to the side of the connecting rod, and the stirring rod passes through the connecting rod.

4. The multi-stage dynamic flow field stratified treatment device for textile wastewater according to claim 3, characterized in that... The sewage inlet is connected to the filter tank, the filter tank is connected to the drain outlet, and the motor shaft of the filter motor passes through the top of the motor waterproof housing, with a sealed bearing placed between the motor shaft and the motor waterproof housing.

5. The multi-stage dynamic flow field stratified treatment device for textile wastewater according to claim 3, characterized in that... The limiting rod extends upward through the middle of the cross-shaped connecting rod to the other end. The diameter of the limiting rod near the top is smaller than the diameter of other parts. A limiting rib is placed on the side of the limiting rod near the top. The bottom end of the connecting rod is an open structure. A limiting groove is opened on the inner side of the bottom end of the connecting rod. The connecting rod is plugged and pulled with the limiting rod through the limiting groove and the limiting rib.

6. The multi-stage dynamic flow field stratified treatment device for textile wastewater according to claim 3, characterized in that... A support bearing is placed between the third layer filter screen and the limiting rod. The filter holes are evenly distributed on the third layer filter screen. The filter holes are circular and the edges are blunted. The third layer filter screen is positioned above the drain outlet in the height direction.

7. The multi-stage dynamic flow field stratified treatment device for textile wastewater according to claim 3, characterized in that... The first, second, and third filter layers are arranged equidistantly along the axial direction of the connecting rod. The first filter layer is woven from stainless steel wire with a wire diameter of 0.2 mm and rhomboid mesh. The second filter layer is made of high-strength nylon fiber with a fiber diameter of 0.1 mm and regular hexagonal mesh.

8. A multi-stage dynamic flow field stratified treatment device for textile wastewater according to claim 3, characterized in that... Furthermore, the middle part of the stirring rod is connected to the connecting rod, and multiple stirring rods are arranged at equal intervals along the axial direction of the connecting rod, with adjacent stirring rods being set perpendicularly. The stirring rod has a hollow structure and is filled with foam material with a specific gravity less than water. The surface of the stirring rod is provided with spiral raised textures. The stirring rod, the first layer filter screen, and the second layer filter screen do not contact each other.

9. A multi-stage dynamic flow field stratified treatment device for textile wastewater according to claim 1, characterized in that... The reaction assembly consists of an aeration pipe, a ventilation pipe, and an air pump. The aeration pipe is placed inside the filter tank and near the bottom. One end of the ventilation pipe is connected to the hollow ring of the aeration pipe and is in communication with the aeration pipe. The other end of the ventilation pipe is placed outside the filter tank and connected to the air outlet of the air pump.

10. A multi-stage dynamic flow field stratified treatment device for textile wastewater according to claim 9, characterized in that... The aeration pipe consists of a hollow ring and multiple cylinders. The cylinders are placed on top of the hollow ring and are connected to the hollow ring. The multiple cylinders are arranged at equal intervals along the circumference of the hollow ring. A one-way valve is placed near a section of the aeration pipe, and a sealing ring is placed between the aeration pipe and the filter tank.

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