Printing and dyeing wastewater treatment device and method

Abstract

The present invention discloses a printing and dyeing wastewater treatment device and method, comprising a countercurrent contact mixing adsorption chamber, wherein a first delivery pipe is provided at the upper portion of the side wall of the countercurrent contact mixing adsorption chamber, a second delivery pipe is provided on one side of the first delivery pipe, a tangentially arranged spoiler is provided at the middle portion of the side of the countercurrent contact mixing adsorption chamber, a purified wastewater discharge pipe is provided at the upper portion of the countercurrent contact mixing adsorption chamber, and a swirl mixing adsorption chamber is provided at the lower portion of the countercurrent contact mixing adsorption chamber, the purified wastewater discharge pipe including an overflow outlet pipe, one end of the overflow outlet pipe being located at the upper portion of the countercurrent contact mixing adsorption chamber, the other end of the overflow outlet pipe being located within the swirl mixing adsorption chamber, the other end of the overflow outlet pipe being connected to a plug-in component, the outer surface of the plug-in component being provided with a guide vane, the rotation direction of the guide vane being consistent with the tangential direction of the spoiler. The device can improve the adsorption efficiency of adsorbent particles on pollutants in printing and dyeing wastewater, realize the continuous operation of the adsorption process, and facilitate the separation and recovery of adsorbent particles, and has a simple structure and low production cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of printing and dyeing wastewater treatment, and in particular relates to a printing and dyeing wastewater treatment device and method. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The printing and dyeing industry in the textile industry chain produces a large amount of printing and dyeing wastewater. Printing and dyeing wastewater contains dyes, slurries, auxiliaries, oils, acids and alkalis, fiber impurities, sand substances, inorganic salts, etc. It has the characteristics of large water volume, high chroma, high content of organic pollutants, high alkalinity, large changes in water quality, water volume and pH, and high content of suspended solids. Direct discharge poses great harm to human health and the living environment, and is one of the difficult-to-treat industrial wastewaters.

[0004] Currently, there are three main methods for treating printing and dyeing wastewater: physical, chemical, and biological. Representative physical methods include adsorption, membrane separation, and magnetic separation. Chemical methods include electrochemical oxidation, photocatalytic oxidation, catalytic wet oxidation, ozone oxidation, Fenton treatment, and supercritical water oxidation. Biological methods include aerobic, anaerobic, and anaerobic-aerobic methods. Adsorption is particularly popular due to its simple operation, high adsorption efficiency, avoidance of secondary contamination, and reusable adsorbents.

[0005] There are two main types of equipment used in the industry for treating printing and dyeing wastewater by adsorption: fixed-bed and fluidized-bed. In fixed-bed adsorption, the adsorbent remains stationary while wastewater flows through the bed of adsorbent, completing the adsorption process during this process. While this approach offers advantages in terms of simple operation and low energy consumption, due to the thick bed filling, uniform contact between wastewater and adsorbent is difficult to control, leading to channeling and short-circuiting. Furthermore, the adsorbent bed requires regular replacement, preventing continuous operation of all equipment. Fluidized-bed adsorption utilizes a fluidized process to allow the adsorbent to contact the wastewater in a fluidized state. Its advantages include high mixed contact efficiency between the adsorbent and wastewater, enabling a continuous and stable adsorption treatment process. However, its disadvantages include wear and loss of the adsorbent during the fluidization process, and the need for an additional separation module for adsorbent recovery. Furthermore, fixed-bed and fluidized-bed adsorption equipment are complex in structure and expensive to produce. Summary of the Invention

[0006] In response to the above problems, the present invention provides a printing and dyeing wastewater treatment device and method, which can improve the adsorption efficiency of adsorbent particles on pollutants in printing and dyeing wastewater, realize the continuous operation of the adsorption process, and facilitate the separation and recovery of adsorbent particles; and has a simple structure and low production cost.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A printing and dyeing wastewater treatment device and method, comprising a countercurrent contact mixing adsorption chamber, wherein a first delivery pipe is provided at the upper portion of a side wall of the countercurrent contact mixing adsorption chamber, a second delivery pipe is provided on one side of the first delivery pipe, and a flow disruptor is provided tangentially to the countercurrent contact mixing adsorption chamber, wherein the flow disruptor is provided in the middle portion of a side portion of the countercurrent contact mixing adsorption chamber;

[0009] A purified wastewater discharge pipe is provided at the upper part of the countercurrent contact mixing adsorption chamber, and a cyclone mixing adsorption chamber is provided at the lower part of the countercurrent contact mixing adsorption chamber; the purified wastewater discharge pipe includes an overflow outlet pipe, one end of the overflow outlet pipe is located at the upper part of the countercurrent contact mixing adsorption chamber, and the other end of the overflow outlet pipe is located in the cyclone mixing adsorption chamber, and the other end of the overflow outlet pipe is connected to a plug-in connector, and a guide vane is provided on the outer surface of the plug-in connector, and the rotation direction of the guide vane is consistent with the tangential direction of the spoiler tube.

[0010] Furthermore, the purified wastewater discharge pipe is connected to the countercurrent contact mixing adsorption chamber through a first flange; the countercurrent contact mixing adsorption chamber and the cyclone mixing adsorption chamber are connected through a second flange, and the countercurrent contact mixing adsorption chamber and the cyclone mixing adsorption chamber are communicated.

[0011] Furthermore, a separation chamber is provided at the lower portion of the cyclone mixing adsorption chamber, and the cyclone mixing adsorption chamber and the separation chamber are connected via a third flange, so that the cyclone mixing adsorption chamber and the separation chamber are in communication.

[0012] Furthermore, the separation chamber is a conical structure, and the diameter of the upper end of the separation chamber is larger than the diameter of the lower end.

[0013] Furthermore, an adsorbent particle collecting chamber is provided at the lower portion of the separation chamber, the separation chamber and the adsorbent particle collecting chamber are connected via a fourth flange, and the separation chamber is communicated with the adsorbent particle collecting chamber; the lower portion of the adsorbent particle collecting chamber is a conical structure.

[0014] Furthermore, a sedimentation liquid outlet pipe is provided at one end of the upper part of the adsorbent particle collecting chamber, and the sedimentation liquid outlet pipe is connected to the interior of the adsorbent particle collecting chamber; an underflow outlet pipe is provided at the lower part of the adsorbent particle collecting chamber, and the underflow outlet pipe is connected to the interior of the adsorbent particle collecting chamber.

[0015] Furthermore, a plug connector is provided on the upper portion of the plug connector, the plug connector is fixedly connected to the plug connector, and the plug connector is provided in the overflow outlet pipe; and an arc structure is provided at the lower end of the plug connector.

[0016] A method for treating printing and dyeing wastewater comprises the following steps:

[0017] The printing and dyeing wastewater is transported to the countercurrent contact mixing adsorption chamber through the first transport pipe, and the adsorbent particles are transported to the countercurrent contact mixing adsorption chamber through the second transport pipe, and the printing and dyeing wastewater and the adsorbent particles are transported simultaneously;

[0018] The printing and dyeing wastewater and the adsorbent particles collide with each other in the countercurrent flow. Under the action of the collision, the adsorbent particles perform damping oscillation motion to adsorb pollutants in the printing and dyeing wastewater. At the same time, part of the printing and dyeing wastewater enters the countercurrent contact mixing adsorption chamber tangentially through the flow disturbance tube, thereby increasing the flow turbulence intensity. The adsorbent particles and the printing and dyeing wastewater achieve sufficient mixing contact, that is, completing the countercurrent contact mixing adsorption;

[0019] After completing the countercurrent contact mixing adsorption process, the adsorbent particles and the printing and dyeing wastewater mixture flows through the guide vanes on the outer wall of the purified wastewater discharge pipe and enters the cyclone mixing adsorption chamber. After being accelerated by the guide vanes, a cyclone field is formed. Under the action of the shear flow field in the cyclone field, the adsorbent particles and the printing and dyeing wastewater achieve secondary mixing contact, thus completing the cyclone adsorption.

[0020] Furthermore, after completing the cyclone adsorption process, the purified wastewater and the adsorbent particles enter the separation chamber together, and the initial separation is completed under the action of the density difference between the liquid and solid phases and the conical structure of the separation chamber. Under the influence of the centrifugal field, the purified wastewater forms an internal vortex near the axis, enters the purified wastewater discharge pipe along the axial direction, and is discharged through the overflow outlet pipe of the purified wastewater discharge pipe.

[0021] Furthermore, the adsorbent particles that have adsorbed pollutants enter the adsorbent particle collection chamber. After completing the sedimentation and separation process in the adsorbent particle collection chamber, the adsorbent particles are discharged from the bottom flow outlet pipe; the liquid in the adsorbent particle collection chamber is discharged from the sedimentation liquid outlet pipe, and after discharge, it is transported to the spoiler pipe as part of the wastewater source of the spoiler pipe, thereby realizing the recycling treatment of wastewater.

[0022] Compared with the prior art, the present invention has the following advantages and positive effects:

[0023] The present invention simultaneously transports printing and dyeing wastewater and adsorbent particles through a first delivery pipe and a second delivery pipe. The two flow in countercurrent contact, thereby generating collisions. A vortex field is formed by the guide vanes, thereby generating shear flow. Specifically, the impact flow generated by the countercurrent contact and the shear flow generated by the vortex flow are used to strengthen the mixed contact process between the printing and dyeing wastewater and the adsorbent particles, achieving a two-stage enhancement of the dynamic adsorption process and improving the adsorption efficiency of the adsorbent particles on pollutants in the printing and dyeing wastewater. The adsorption process is dynamic, achieving continuous operation of the adsorption process. Adsorption in a flowing state avoids carbon deposition within the device and is also beneficial for the subsequent separation and recovery of activated carbon. The adsorption process and the agent-waste (adsorbent particles and purified wastewater) separation process are integrated in a single device, improving the functional diversity of the treatment device. The design of the arc-shaped overflow outlet reduces the probability of circulating flow near the overflow outlet.

[0024] The printing and dyeing wastewater treatment device of the present invention has a simple and compact structure and no moving parts, which not only reduces infrastructure investment but also improves the convenience of equipment maintenance; the device is an assembled structure, and the countercurrent contact mixing adsorption chamber, the cyclone mixing adsorption chamber, the separation chamber and the adsorbent particle collection chamber are connected by flanges. The modules can be replaced according to the material conditions of the wastewater and the adsorbent particles, thereby increasing the operational flexibility and application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] Figure 1 This is a front view of the printing and dyeing wastewater treatment device of the present invention;

[0027] Figure 2 It is a cross-sectional view of the countercurrent contact mixing adsorption chamber and the cyclonic mixing adsorption chamber of the present invention;

[0028] Figure 3 is a top view of the printing and dyeing wastewater treatment device of the present invention;

[0029] Figure 4 Schematic diagram of the structure of the spoiler tube of the present invention;

[0030] Figure 5 This is a schematic structural diagram of the purified wastewater discharge pipe of the present invention;

[0031] Figure 6 2. It is a schematic structural diagram of the overflow outlet pipe of the present invention;

[0032] Figure 7 It is a schematic diagram of the structure of the connector of the present invention;

[0033] Figure 8 It is a schematic diagram of the plug connector structure of the present invention;

[0034] In the figure: 1. Countercurrent contact mixing adsorption chamber; 2. Cyclone mixing adsorption chamber; 3. Separation chamber; 4. Adsorbent particle collection chamber; 5. Purified wastewater discharge pipe; 6. First flange; 7. Second flange; 8. Third flange; 9. Fourth flange; 10. First delivery pipe; 11. Second delivery pipe; 12. Turbine; 13. Guide vane; 14. Overflow outlet pipe; 15. Underflow outlet pipe; 16. Settled liquid outlet pipe; 17. Connector; 18. Connector. DETAILED DESCRIPTION

[0035] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0036] Example 1:

[0037] The present invention is described in detail with reference to the accompanying drawings. The present embodiment discloses a printing and dyeing wastewater treatment device, such as Figure 1 As shown, it includes a countercurrent contact mixing adsorption chamber 1, a countercurrent contact mixing adsorption chamber 1, a first delivery pipe 10 is provided on the upper part of the side wall of the countercurrent contact mixing adsorption chamber 1, a second delivery pipe 11 is provided on one side of the first delivery pipe 10, and a spoiler pipe 12 is provided tangentially to the countercurrent contact mixing adsorption chamber 1, and the spoiler pipe 12 is provided in the middle of the side of the countercurrent contact mixing adsorption chamber 1;

[0038] like Figure 2 As shown, a purified wastewater discharge pipe 5 is provided at the upper part of the countercurrent contact mixing adsorption chamber 1, and a cyclone mixing adsorption chamber 2 is provided at the lower part of the countercurrent contact mixing adsorption chamber 1; the purified wastewater discharge pipe 5 includes an overflow outlet pipe 14, one end of the overflow outlet pipe 14 is located at the upper part of the countercurrent contact mixing adsorption chamber 1, and the other end of the overflow outlet pipe 14 is located in the cyclone mixing adsorption chamber 2, and the other end of the overflow outlet pipe 14 is connected to the connector 17, and a guide vane 13 is provided on the outer surface of the connector 17, and the rotation direction of the guide vane 13 is consistent with the tangential direction of the spoiler tube 12.

[0039] like Figure 3 As shown, the first delivery pipe 10 and the second delivery pipe 11 are arranged on the side wall of the countercurrent contact mixing adsorption chamber 1, and the axes of the two delivery pipe inlets satisfy an equilateral triangle relationship to ensure the centering of the impact position. Figure 4 As shown, a disturbing inflow pipe is set tangentially on the side wall of the countercurrent contact mixing adsorption chamber 1, which enters the countercurrent contact mixing adsorption chamber 1 tangentially to increase the turbulence intensity of the printing and dyeing wastewater, thereby increasing the mixing contact intensity between the adsorbent particles and the printing and dyeing wastewater.

[0040] like Figure 5 As shown, the adsorbent particles and printing and dyeing wastewater mixture flow through guide vanes 13 into the swirl mixing adsorption chamber 2, forming a shear flow field within the swirl mixing adsorption chamber 2. The rotation direction of guide vanes 13 is consistent with the tangential direction of the turbulent inlet. A threaded connection is used between guide vanes 13 and the purified wastewater discharge pipe 5, facilitating removal and replacement of guide vanes 13.

[0041] The purified wastewater discharge pipe 5 is connected to the countercurrent contact mixing adsorption chamber 1 via a first flange 6; the countercurrent contact mixing adsorption chamber 1 is connected to the cyclone mixing adsorption chamber 2 via a second flange 7, and the countercurrent contact mixing adsorption chamber 1 and the cyclone mixing adsorption chamber 2 are connected. A separation chamber 3 is provided at the bottom of the cyclone mixing adsorption chamber 2, and the cyclone mixing adsorption chamber 2 and the separation chamber 3 are connected via a third flange 8, and the cyclone mixing adsorption chamber 2 and the separation chamber 3 are connected. An adsorbent particle collection chamber 4 is provided at the bottom of the separation chamber 3, and the separation chamber 3 and the adsorbent particle collection chamber 4 are connected via a fourth flange 9, and the separation chamber 3 and the adsorbent particle collection chamber 4 are connected. The various cavities are interconnected, and the flange connection method can improve the maintenance convenience of different parts and achieve the adaptability of different structural components, thereby improving the applicability of the entire device.

[0042] The separation chamber 3 is a conical structure, with the diameter of the upper end of the separation chamber 3 being larger than the diameter of the lower end. The conical structure helps the centrifugal field to separate the adsorbent particles from the purified wastewater, making the separation of the adsorbent particles and the purified wastewater more thorough.

[0043] A sedimentation liquid outlet pipe 16 is provided at one end of the upper part of the adsorbent particle collecting chamber 4, and the sedimentation liquid outlet pipe 16 is connected to the interior of the adsorbent particle collecting chamber 4; an underflow outlet pipe 15 is provided at the lower part of the adsorbent particle collecting chamber 4, and the underflow outlet pipe 15 is connected to the interior of the adsorbent particle collecting chamber 4; the lower part of the adsorbent particle collecting chamber 4 is a conical structure.

[0044] The conical structure of the adsorbent particle collection chamber 4 prevents the adsorbent particles from settling, allowing for the timely discharge of the adsorbent particles after the adsorption process is complete. A purified wastewater outlet pipe is provided at the top of the adsorbent particle collection chamber 4, allowing any wastewater that rises from the adsorbent particle collection chamber 4 to be discharged from this outlet. This discharged wastewater then serves as a source of wastewater for the flow-disturbing pipe 12.

[0045] The overflow outlet pipe 14 and the underflow outlet pipe 15 are coaxially designed so that the printing and dyeing wastewater and adsorbent particles gradually enter the cavity in the vertical direction. Figure 7 As shown, a plug connector 18 is provided on the upper portion of the plug connector 17, the plug connector 18 is fixedly connected to the plug connector 17, and the plug connector 18 is provided in the overflow outlet pipe 14; Figure 8 As shown, an arc-shaped structure is provided at the lower end of the plug connector 18. The arc-shaped structure can suppress the generation of circulating flow and improve the separation efficiency of the device.

[0046] Example 2:

[0047] A method for treating printing and dyeing wastewater comprises the following steps:

[0048] The printing and dyeing wastewater is transported to the countercurrent contact mixing adsorption chamber 1 through the first transport pipe 10, and the adsorbent particles are transported to the countercurrent contact mixing adsorption chamber 1 through the second transport pipe 11. The printing and dyeing wastewater and the adsorbent particles are transported simultaneously.

[0049] The printing and dyeing wastewater and the adsorbent particles collide with each other in countercurrent flow. Under the action of the collision, the adsorbent particles perform damped oscillation motion to adsorb pollutants in the printing and dyeing wastewater. At the same time, part of the printing and dyeing wastewater enters the countercurrent contact mixing adsorption chamber 1 tangentially through the flow disturbance tube 12, thereby increasing the flow turbulence intensity. The adsorbent particles and the printing and dyeing wastewater achieve sufficient mixing contact, that is, completing the countercurrent contact mixing adsorption;

[0050] At the same time, in order to avoid the problem of less distribution of adsorbent particles opposite the impact position, a part of the printing and dyeing wastewater to be treated enters the countercurrent contact mixing adsorption chamber 1 along the tangential direction through the spoiler tube 12. Under this action, the turbulent intensity of the flow in the countercurrent contact mixing adsorption chamber 1 increases, and the amplitude of the oscillating motion of the adsorbent particles decreases and then returns to a turbulent state, thereby enhancing the mixing of the adsorbent particles and the printing and dyeing wastewater.

[0051] After completing the countercurrent contact mixing adsorption process, the adsorbent particles and the printing and dyeing wastewater mixture flows through the guide blades 13 on the outer wall of the purified wastewater discharge pipe 5 and enters the cyclone mixing adsorption chamber 2. After being accelerated by the guide blades 13, a cyclone field is formed. Under the action of the shear flow field in the cyclone field, the adsorbent particles and the printing and dyeing wastewater are subjected to secondary mixing contact, thus completing the cyclone adsorption.

[0052] After completing the cyclone adsorption process, the purified wastewater and the adsorbent particles enter the separation chamber 3 together, and the preliminary separation is completed under the action of the density difference between the liquid and solid phases and the conical structure of the separation chamber 3. Under the influence of the centrifugal field, the purified wastewater forms an internal vortex near the axis, enters the purified wastewater discharge pipe 5 along the axial direction, and is discharged through the overflow outlet pipe 14 of the purified wastewater discharge pipe 5.

[0053] The adsorbent particles that have adsorbed pollutants enter the adsorbent particle collecting chamber 4. After completing the sedimentation and separation process in the adsorbent particle collecting chamber 4, the adsorbent particles are discharged from the bottom flow outlet pipe 15; the liquid in the adsorbent particle collecting chamber 4 is discharged from the sedimentation liquid outlet pipe 16, and after discharge, it is transported to the spoiler pipe 12 as a part of the wastewater source of the spoiler pipe 12, thereby realizing the recycling treatment of wastewater.

[0054] Countercurrent contact and cyclonic flow are used to enhance the dynamic adsorption process between the adsorbent and wastewater. This is primarily achieved by utilizing the impact flow generated by the countercurrent contact and the shear flow generated by the cyclonic flow to increase the contact time and area between the adsorbent and wastewater. The oscillating motion of the particles generated by the impact flow increases the contact time between the adsorbent and wastewater, while the rotation and revolution of the particles in the shear flow field increase the contact area between the adsorbent and wastewater. Simultaneously, the adsorbed adsorbent and treated wastewater in the cyclonic field undergo a primary separation under the action of the centrifugal force, integrating the dynamic adsorption and primary separation processes within a single device and enhancing the functional versatility of the unit. This achieves multifunctionality in the adsorption device, integrating the mixing, adsorption, and separation unit processes of the adsorbent particles and printing and dyeing wastewater within a single device.

[0055] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. A printing and dyeing wastewater treatment device, characterized in that: The invention comprises a countercurrent contact mixing adsorption chamber, wherein a first delivery pipe is provided on the upper portion of a side wall of the countercurrent contact mixing adsorption chamber, a second delivery pipe is provided on one side of the first delivery pipe, and a flow disruptor is provided tangentially to the countercurrent contact mixing adsorption chamber, wherein the flow disruptor is provided in the middle portion of a side portion of the countercurrent contact mixing adsorption chamber; A purified wastewater discharge pipe is provided at the upper portion of the countercurrent contact mixing adsorption chamber, and a cyclone mixing adsorption chamber is provided at the lower portion of the countercurrent contact mixing adsorption chamber; the purified wastewater discharge pipe includes an overflow outlet pipe, one end of the overflow outlet pipe is located at the upper portion of the countercurrent contact mixing adsorption chamber, and the other end of the overflow outlet pipe is located in the cyclone mixing adsorption chamber, and the other end of the overflow outlet pipe is connected to a plug-in connector, and a guide vane is provided on the outer surface of the plug-in connector, and the rotation direction of the guide vane is consistent with the tangential direction of the spoiler tube; A separation chamber is provided at the lower part of the cyclone mixing adsorption chamber, and the cyclone mixing adsorption chamber and the separation chamber are connected via a third flange, so that the cyclone mixing adsorption chamber and the separation chamber are in communication; An adsorbent particle collecting chamber is provided at the lower part of the separation chamber, and the separation chamber and the adsorbent particle collecting chamber are connected by a fourth flange, and the separation chamber is communicated with the adsorbent particle collecting chamber; the lower part of the adsorbent particle collecting chamber is a conical structure; the printing and dyeing wastewater is transported to the countercurrent contact mixing adsorption chamber through the first conveying pipe, and the adsorbent particles are transported to the countercurrent contact mixing adsorption chamber through the second conveying pipe; part of the printing and dyeing wastewater enters the countercurrent contact mixing adsorption chamber tangentially through the spoiler pipe; the axes of the two conveying pipe inlets satisfy an equilateral triangle relationship.

2. A printing and dyeing wastewater treatment device according to claim 1, characterized in that: The purified wastewater discharge pipe is connected to the countercurrent contact mixing adsorption chamber via a first flange; the countercurrent contact mixing adsorption chamber and the cyclone mixing adsorption chamber are connected via a second flange, and the countercurrent contact mixing adsorption chamber and the cyclone mixing adsorption chamber are communicated.

3. The printing and dyeing wastewater treatment device according to claim 1, characterized in that: The separation chamber is a conical structure, and the diameter of the upper end of the separation chamber is larger than the diameter of the lower end.

4. A printing and dyeing wastewater treatment device according to claim 1, characterized in that: A sedimentation liquid outlet pipe is provided at one end of the upper part of the adsorbent particle collecting chamber, and the sedimentation liquid outlet pipe is communicated with the interior of the adsorbent particle collecting chamber; an underflow outlet pipe is provided at the lower part of the adsorbent particle collecting chamber, and the underflow outlet pipe is communicated with the interior of the adsorbent particle collecting chamber.

5. The printing and dyeing wastewater treatment device according to claim 1, characterized in that: A plug connector is provided on the upper part of the plug connector, the plug connector is fixedly connected to the plug connector, and the plug connector is provided in the overflow outlet pipe; an arc structure is provided at the lower end of the plug connector.

6. The method for treating printing and dyeing wastewater according to any one of claims 1 to 5, wherein: The following steps are involved: The printing and dyeing wastewater is transported to the countercurrent contact mixing adsorption chamber through the first transport pipe, and the adsorbent particles are transported to the countercurrent contact mixing adsorption chamber through the second transport pipe, and the printing and dyeing wastewater and the adsorbent particles are transported simultaneously; The printing and dyeing wastewater and the adsorbent particles collide with each other in the countercurrent flow. Under the action of the collision, the adsorbent particles perform damping oscillation motion to adsorb pollutants in the printing and dyeing wastewater. At the same time, part of the printing and dyeing wastewater enters the countercurrent contact mixing adsorption chamber tangentially through the flow disturbance tube, thereby increasing the flow turbulence intensity. The adsorbent particles and the printing and dyeing wastewater achieve sufficient mixing contact, that is, completing the countercurrent contact mixing adsorption; After completing the countercurrent contact mixing adsorption process, the adsorbent particles and the printing and dyeing wastewater mixture flows through the guide vanes on the outer wall of the purified wastewater discharge pipe and enters the cyclone mixing adsorption chamber. After being accelerated by the guide vanes, a cyclone field is formed. Under the action of the shear flow field in the cyclone field, the adsorbent particles and the printing and dyeing wastewater achieve secondary mixing contact, thus completing the cyclone adsorption.

7. The method for treating printing and dyeing wastewater according to claim 6, wherein: After completing the cyclone adsorption process, the purified wastewater and the adsorbent particles enter the separation chamber together, and the initial separation is completed under the action of the density difference between the liquid and solid phases and the conical structure of the separation chamber. Under the influence of the centrifugal field, the purified wastewater forms an internal vortex near the axis, enters the purified wastewater discharge pipe along the axial direction, and is discharged through the overflow outlet pipe of the purified wastewater discharge pipe.

8. The method for treating printing and dyeing wastewater according to claim 7, wherein: The adsorbent particles that have adsorbed pollutants enter the adsorbent particle collection chamber. After completing the sedimentation and separation process in the adsorbent particle collection chamber, the adsorbent particles are discharged from the bottom flow outlet pipe; the liquid in the adsorbent particle collection chamber is discharged from the sedimentation liquid outlet pipe, and after discharge, it is transported to the spoiler pipe as part of the wastewater source of the spoiler pipe, thereby realizing the recycling treatment of wastewater.

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