Textile printing and dyeing wastewater treatment and recycling system

Abstract

The invention discloses a textile printing and dyeing wastewater treatment and recycling system which comprises a water storage tank, the water storage tank is provided with a plurality of separated cavities, the outer sides of the separated cavities are connected with input pipes and output pipes, when wastewater is transferred to the next separated cavity, a middle pipe is connected between the output pipe of the previous separated cavity and the input pipe of the next separated cavity, and the output pipe of the next separated cavity is connected with the middle pipe. A water pump for wastewater transmission is mounted on the middle pipe, a treatment part for filtration is mounted in each of the plurality of separation cavities, each treatment part comprises a rotatable filter cartridge, and different positions of the filter cartridges are used for filtration; an air pipe is further mounted on the outer side of the water storage tank and extends to the outer side of the filter cartridge. According to the invention, wastewater in the water storage tank is in a full state, suspended matters enter the filter cartridge, the suspended matters on the inner wall of the filter cartridge move to the water surface along with rotation of the filter cartridge, and gas can penetrate through the filter holes to blow the suspended matters to the inner bearing frame, so that the suspended matters can be continuously treated by the filter cartridge.

Description

Technical Field

[0001] The invention relates to the technical field of printing and dyeing wastewater recovery, in particular to a textile printing and dyeing wastewater treatment and reuse system. Background Art

[0002] The suspended solids in the printing and dyeing wastewater are treated and recycled for printing and dyeing. The printing and dyeing wastewater contains a large amount of suspended solids. If these suspended solids are not treated, they will directly affect the printing and dyeing effect and product quality. Suspended solids include yarn ends, cloth pieces, dye particles, colloid substances, etc. They will adhere to the fabric, causing problems such as uneven dyeing, color spots, and reduced color fastness. Therefore, when treating printing and dyeing wastewater, the removal of suspended solids is a crucial step.

[0003] There are many ways to treat the suspended matter in the printing and dyeing wastewater, and then make the printing and dyeing wastewater reusable. Commonly used methods are coagulation sedimentation, filtration and flotation. The coagulation sedimentation method requires the addition of coagulants to make the tiny particles in the wastewater aggregate to form larger flocs, which are then separated from the wastewater by sedimentation. However, the addition of coagulants will change the state of the printing and dyeing water, which may easily lead to unknown problems in subsequent recycling and printing. The flotation method forms tiny bubbles by introducing air into the wastewater, so that the suspended matter in the wastewater adheres to the bubbles and rises to the water surface with the bubbles, thereby achieving the removal of suspended matter. The flotation method is better for removing lighter suspended matter, so it is difficult to apply to many suspended matter. The filtration method can filter a variety of suspended matter, so the filtration method is more applicable. During the filtration process, the suspended matter is easy to clog the filter, making it difficult to filter the wastewater continuously. Even if it can be filtered continuously, it is difficult to clean the suspended matter stuck in the filter. Based on this, a device for achieving continuous filtration and cleaning suspended matter in the filter is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a textile printing and dyeing wastewater treatment and reuse system to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a textile printing and dyeing wastewater treatment and reuse system, comprising a water storage tank, the water storage tank having a plurality of compartments, the outer sides of the compartments are connected with input pipes and output pipes, when the wastewater is transferred to the next compartment, an intermediate pipe is connected between the output pipe of the previous compartment and the input pipe of the next compartment, the intermediate pipe is equipped with a water pump for wastewater transmission, a plurality of the compartments are equipped with a processing unit for filtering, the processing unit includes a rotatable filter cartridge, and filtering is performed at different positions of the filter cartridge;

[0006] An air pipe is also installed on the outside of the water storage tank, and the air pipe extends to the outside of the filter cartridge to blow away the suspended matter.

[0007] Furthermore, the input pipe is located at the upper end of the output pipe, the input pipe extends inwardly to the inside of the filter cartridge, and the output pipe is located outside the filter cartridge.

[0008] Furthermore, the filter cartridge is arranged transversely, one end of which is open, and a mounting shaft is fixed to the other end. A mounting opening is opened on the inner wall of the compartment, and the mounting shaft of the filter cartridge is rotatably installed in the mounting opening.

[0009] Furthermore, arc-shaped frames for supporting the filter cartridge are fixed on the inner walls on both sides of the compartment, and the arc-shaped frames are fitted with the outer side of the filter cartridge.

[0010] Furthermore, the processing part also includes an inner receiving frame, which is fixed on the water storage tank and extends into the filter cartridge to receive the suspended matter dropped from the inner wall of the filter cartridge;

[0011] The outer wall of the filter cartridge is provided with filter holes which penetrate through it, and the outer wall of the filter cartridge is also fixed with circumferentially distributed external drive strips. The air pipe is parallel to the axis of the filter cartridge, and an inclined air outlet is provided on the outer side of the air pipe for blowing obliquely toward the filter cartridge to rotate the filter cartridge.

[0012] Furthermore, the filter hole is arranged obliquely, and one end of the filter hole is located in the filter cartridge and faces the side of the filter cartridge opening, and the filter hole is also inclined toward the direction of movement of the tracheal gas.

[0013] Furthermore, an internal processing unit is installed on the inner supporting frame, and the internal processing unit includes a supporting shaft fixed on the inner supporting frame, a rotating drum is sleeved on the supporting shaft, the rotating drum is parallel to the axis of the filter cartridge, an external driving plate is fixed on the outer wall of the rotating drum, and arranged bristles are fixed on the outer side of the external driving plate, the bristles are in contact with the inner wall of the filter cartridge, and the bristles are used to clean the inner wall of the filter cartridge.

[0014] Furthermore, the bristles are rigid, and the outer ends of the bristles are rounded.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] 1. The wastewater inside the water tank is full, and the suspended matter enters the filter cartridge. The suspended matter on the inner wall of the filter cartridge moves to the water surface as the filter cartridge rotates. The gas can penetrate the filter holes and blow the suspended matter onto the inner receiving frame, so that the filter cartridge can continuously process the suspended matter.

[0017] 2. The filter holes are inclined, with the inner end of the filter holes facing the end of the filter cartridge opening, so that the suspended matter inside the filter holes can move toward the side of the filter cartridge opening, making it easy to blow the suspended matter outward. The inclined filter holes are conducive to blocking the suspended matter and preventing it from directly penetrating the filter holes.

[0018] 3. The axis of the filter hole is in the same plane as the airflow blown out of the air pipe. The inclined airflow directly enters the filter hole, pushing the outer drive plate, causing the outer drive plate to rotate, so that the bristles clean the inner wall of the filter cartridge, thereby preventing stubborn suspended matter from adhering to the inner wall of the filter cartridge.

[0019] 4. When the suspended matter is in the wastewater, it is supported by the water body and remains relatively intact, avoiding moving downward from the filter holes. When it just rotates to the water surface, the filter cartridge is located on the outside of the suspended matter, and the suspended matter adhering to the inside of the filter cartridge is also avoided from entering the filter holes as much as possible, so that the suspended matter is separated from the wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the water storage tank of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the processing unit of the present invention;

[0024] Figure 4 It is a schematic diagram of the main structure of the processing unit of the present invention;

[0025] Figure 5 This is a schematic diagram of a half-section structure of the filter cartridge of the present invention;

[0026] Figure 6 The present invention Figure 5 A is a schematic diagram of the partially enlarged structure of the middle part;

[0027] Figure 7 This is a schematic diagram of the oblique cross-section structure of the filter cartridge of the present invention;

[0028] Figure 8 The present invention Figure 7 A schematic diagram of the partially enlarged structure of B in the middle;

[0029] Fig. 9 It is a schematic diagram of the structure of the filter cartridge of the present invention in oblique section and in coordination with the air pipe 2.

[0030] In the figure: 1. water storage tank; 11. compartment; 12. input pipe; 13. output pipe; 14. intermediate pipe; 15. water pump; 16. arc frame; 2. air pipe; 3. processing unit; 31. mounting port; 32. filter cartridge; 33. mounting shaft; 34. filter hole; 35. external drive strip; 36. internal receiving frame; 4. internal processing unit; 41. supporting shaft; 42. rotating drum; 43. external drive plate; 44. bristles. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1-Figure 9 The present invention provides a technical solution: during the filtration process, the suspended matter easily blocks the filter screen, making it difficult to filter the wastewater continuously. Even if the filtration can be carried out continuously, it is difficult to clean the suspended matter stuck in the filter screen. A textile printing and dyeing wastewater treatment and reuse system is proposed, such as Figure 1 As shown, the water storage tank 1 includes a water storage tank 1, which has a plurality of compartments 11. The plurality of compartments 11 are used to filter wastewater in multiple stages to reduce the suspended matter in the wastewater as much as possible and prevent the suspended matter from adhering to the fabric in the subsequent printing and dyeing. The outer sides of the compartments 11 are connected with input pipes 12 and output pipes 13. When the wastewater is transferred to the next compartment 11, an intermediate pipe 14 is connected between the output pipe 13 of the previous compartment 11 and the input pipe 12 of the next compartment 11. A water pump 15 for wastewater transmission is installed on the intermediate pipe 14. The wastewater in the plurality of compartments 11 can be discharged through the intermediate pipe 14. 14 is used for transmission. Under the action of the water pump 15, the wastewater is transferred step by step to the next compartment 11. A processing unit 3 for filtering is installed in each of the multiple compartments 11. The processing unit 3 includes a rotatable filter cartridge 32. The filter cartridge 32 is used for filtering at different positions. The filter cartridge 32 filters the wastewater, and the suspended matter in the wastewater will remain in the filter cartridge 32. In addition, the height of the water storage tank 1 can be set to decrease step by step, so that the wastewater moves downward from the previous compartment 11 step by step. Although the water pump 15 is not used, the height of the water storage tank 1 needs to be increased;

[0033] like Figure 2As shown, an air pipe 2 is also installed on the outside of the water storage tank 1. The air pipe 2 extends to the outside of the filter cartridge 32 and is used to blow away suspended matter. The outside of the air pipe 2 has an inclined air outlet. The air outlet is strip-shaped and inclined toward the filter cartridge 32, and the blown gas is also in the shape of an inclined strip, applying thrust to the outer drive strip 35, so that the outer drive strip 35 pushes the filter cartridge 32 to rotate, and under the action of the gas, the suspended matter adhered to the inside of the filter cartridge 32 is also blown away. Therefore, under the action of the gas, the filter cartridge 32 can be pushed to rotate and the suspended matter inside the filter cartridge 32 can be cleaned, so that the suspended matter can be continuously processed, and only one gas is needed, so that the structure is simpler and not easy to be damaged.

[0034] like Figure 2 As shown, the input pipe 12 is located at the upper end of the output pipe 13, and the input pipe 12 extends inward to the interior of the filter cartridge 32. The output pipe 13 is located outside the filter cartridge 32. The input pipe 12 and the output pipe 13 are used to transmit wastewater and enable the wastewater to move outward from the filter cartridge 32 to complete the filtration.

[0035] like Figure 3 As shown, the filter cartridge 32 is arranged horizontally, and one end thereof is opened. The horizontal filter cartridge 32 can make the suspended matter adhere to the filter cartridge 32, and rotate upward out of the water surface for treatment, and the suspended matter can be treated from the opening. A mounting shaft 33 is fixed to the other end, and a mounting opening 31 is opened on the inner wall of the compartment 11. The mounting shaft 33 of the filter cartridge 32 is rotatably installed in the mounting opening 31, so that the filter cartridge 32 can be rotated, ensuring that the suspended matter in the filter cartridge 32 can be rotated to the upper end.

[0036] like Figure 2 As shown, arc frames 16 for supporting the filter cartridge 32 are fixed on the inner walls on both sides of the compartment 11. The arc frames 16 fit the outer side of the filter cartridge 32 to support the filter cartridge 32, and the filter cartridge 32 can be easily rotated under the action of external force.

[0037] like Figure 3 As shown, the treatment part 3 also includes an inner receiving frame 36, which is fixed on the water storage tank 1 and extends into the filter cartridge 32, and is used to receive the suspended matter dropped from the inner wall of the filter cartridge 32, collect the suspended matter dropped from the inner wall of the filter cartridge 32, and prevent the suspended matter from entering the wastewater again, so that the suspended matter can be cleaned, and at the same time, the gas can be blocked to prevent the gas from directly reaching the water surface and affecting the water body;

[0038] like Figure 7 and Figure 8As shown, a filter hole 34 is provided on the outer wall of the filter cartridge 32, and a circumferentially distributed outer drive strip 35 is fixed on the outer wall of the filter cartridge 32. The air pipe 2 is parallel to the axis of the filter cartridge 32, and an inclined air outlet is provided on the outer side of the air pipe 2 for blowing obliquely toward the filter cartridge 32 to rotate the filter cartridge 32. The gas moving outward from the inclined air outlet is also inclined. The filter hole 34 can block the suspended matter, but affects the movement of the outer gas into the filter hole 34. Therefore, only when the air pipe 2 is close to the filter cartridge 32 can the gas move into the filter hole 34 and the filter cartridge 32 can be rotated. The rotating filter cartridge 32 is subject to the resistance of the water body at the lower end, which can avoid rotating too fast and stirring the water body, and also ensure that the gas is blown into the filter hole 34 to separate the suspended matter.

[0039] like Figure 7 and Figure 8 As shown, the filter hole 34 is inclined. Figure 7 The cross section in is a half-section of a filter hole 34. The filter hole 34 is located at one end of the filter cartridge 32 toward the side of the opening of the filter cartridge 32. The gas moving toward the filter hole 34 can move along the filter hole 34, causing the gas to move toward the side of the opening of the filter cartridge 32. When the suspended matter is separated, the suspended matter can be blown outward, and the suspended matter rotated to the upper end is separated from the wastewater. Therefore, the gas can easily blow away the suspended matter. The filter hole 34 is also inclined toward the direction of gas movement in the air pipe 2, so that the gas can blow inward along the filter hole 34, allowing the gas to easily enter the filter hole 34, ensuring that the internal treatment unit 4 is blown.

[0040] like Figure 4 and Figure 5 As shown, an internal processing unit 4 is installed on the internal supporting frame 36, and the internal processing unit 4 includes a supporting shaft 41 fixed on the internal supporting frame 36, and a rotating drum 42 is sleeved on the supporting shaft 41. The rotating drum 42 is parallel to the axis of the filter cartridge 32, and an external driving plate 43 is fixed on the outer wall of the rotating drum 42. Arranged bristles 44 are fixed to the outer side of the external driving plate 43, and the bristles 44 are in contact with the inner wall of the filter cartridge 32. The bristles 44 are used to clean the inner wall of the filter cartridge 32, and the bristles 44 can be rotated so that the suspended matter adhering to the inner wall of the filter cartridge 32 can be easily separated from the inner wall of the filter cartridge 32.

[0041] The bristles 44 are rigid, and the outer ends of the bristles 44 are rounded to avoid scratching the inner wall of the filter cartridge 32 and also to avoid jamming. The rigid bristles 44 ensure that the suspended matter is cleaned.

[0042] The working principle of the present invention is as follows: the printing and dyeing wastewater needs to be recycled, and the suspended matter inside needs to be processed. The wastewater first enters the compartment 11 at the end from the input pipe 12 at the end, and then is transmitted through the middle pipe 14 to the wastewater in the compartment 11 at the end, and then is transmitted to multiple subsequent compartments 11. The last compartment 11 transmits the treated wastewater out from the output pipe 13, so that the treated wastewater can be reused.

[0043] Among them, when the above-mentioned printing and dyeing wastewater enters the compartment 11, it needs to pass through the processing unit 3, first pass the wastewater into the filter cartridge 32, and filter through the filter holes 34 of the filter cartridge 32 to reduce the suspended matter in the wastewater. It should be noted that the wastewater inside the water storage tank 1 is in a full state. When the wastewater is filtered downward from the filter cartridge 32, the wastewater will not flow to an excessive extent, so that when the suspended matter enters the filter cartridge 32, it is prevented from moving outward from the filter holes 34 under the action of the thrust of the wastewater, and the filtration is completed. The filter cartridge 32 in the air pipe 2 rotates when the gas blows the outer driving bar 35 on the outside, so that the suspended matter on the inner wall of the filter cartridge 32 moves to the water surface as the filter cartridge 32 rotates. The gas can penetrate the filter holes 34 and blow the suspended matter that moves to the water surface and adheres to the inner wall of the filter cartridge 32 onto the inner receiving frame 36, so that the filter cartridge 32 can continuously process the suspended matter. In addition, the inner receiving frame 36 also has the effect of isolating the gas to prevent the gas from exerting force on the wastewater surface.

[0044] Secondly, if Figure 7 and Figure 8 As shown, Figure 7 The cross section is a cross-sectional view of the filter hole 34, the filter hole 34 is inclined, and the inner end of the filter hole 34 faces the end of the filter cartridge 32 opening, so that when the filter hole 34 takes in air from the outside to the inside, the suspended matter inside the filter hole 34 can move toward the side of the filter cartridge 32 opening, which makes it easy to blow the suspended matter outward and avoid all of it accumulating on the inner receiving frame 36. In addition, the filter hole 34 is inclined, which is conducive to blocking the suspended matter and preventing the suspended matter from directly penetrating the filter hole 34, making it easier to block the suspended matter.

[0045] In addition, the axis of the filter hole 34 is in the same plane as the airflow blown outward from the air pipe 2, so that the inclined airflow directly enters the filter hole 34, pushes the external driving plate 43, and rotates the external driving plate 43, so that the bristles 44 clean the inner wall of the filter cylinder 32, thereby preventing stubborn suspended matter from adhering to the inner wall of the filter cylinder 32.

[0046] At the same time, the filter cartridge 32 is subjected to resistance from the wastewater at the lower end during rotation, so that the rotation speed is slowed down compared with the rotating drum 42, ensuring that the inner wall of the filter cartridge 32 is cleaned by the bristles 44. It should also be noted that there is suspended matter on the inner wall of the filter cartridge 32. When the suspended matter is located in the wastewater, it is supported by the water body and relatively intact, avoiding movement downward from the filter hole 34. When it just rotates to the water surface, the filter cartridge 32 is located on the outside of the suspended matter, and the suspended matter adhering to the inner side of the filter cartridge 32 is also avoided from entering the filter hole 34 as much as possible, but directly adheres to the inner side of the filter cartridge 32, so that the suspended matter is separated from the wastewater.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A textile printing and dyeing wastewater treatment and reuse system, comprising a water storage tank (1), the water storage tank (1) having a plurality of compartments (11), the outer sides of the compartments (11) are connected with input pipes (12) and output pipes (13), when the wastewater is transferred to the next compartment (11), an intermediate pipe (14) is connected between the output pipe (13) of the previous compartment (11) and the input pipe (12) of the next compartment (11), and a water pump (15) for wastewater transmission is installed on the intermediate pipe (14), characterized in that: A processing unit (3) for filtering is installed in each of the plurality of compartments (11), wherein the processing unit (3) comprises a rotatable filter cartridge (32), and filtering is performed at different positions of the filter cartridge (32); An air pipe (2) is also installed on the outside of the water storage tank (1), and the air pipe (2) extends to the outside of the filter cartridge (32) and is used to blow away suspended matter.

2. The textile printing and dyeing wastewater treatment and reuse system according to claim 1, characterized in that: The input pipe (12) is located at the upper end of the output pipe (13), the input pipe (12) extends inwardly to the interior of the filter cartridge (32), and the output pipe (13) is located outside the filter cartridge (32).

3. The textile printing and dyeing wastewater treatment and reuse system according to claim 1, characterized in that: The filter cartridge (32) is arranged transversely, one end of which is open and the other end of which is fixed with a mounting shaft (33). A mounting opening (31) is provided on the inner wall of the compartment (11), and the mounting shaft (33) of the filter cartridge (32) is rotatably mounted in the mounting opening (31).

4. The textile printing and dyeing wastewater treatment and reuse system according to claim 3, characterized in that: An arc-shaped frame (16) for supporting the filter cartridge (32) is fixed on the inner walls on both sides of the compartment (11), and the arc-shaped frame (16) is in contact with the outer side of the filter cartridge (32).

5. The textile printing and dyeing wastewater treatment and reuse system according to claim 1, characterized in that: The processing part (3) further comprises an inner receiving frame (36), which is fixed on the water storage tank (1) and extends into the filter cartridge (32) to receive the suspended matter dropped from the inner wall of the filter cartridge (32); The outer wall of the filter cartridge (32) is provided with filter holes (34) extending therethrough, and the outer wall of the filter cartridge (32) is also fixed with circumferentially distributed external drive strips (35), the air pipe (2) is parallel to the axis of the filter cartridge (32), and the outer side of the air pipe (2) is provided with an inclined air outlet for blowing obliquely toward the filter cartridge (32) to rotate the filter cartridge (32).

6. The textile printing and dyeing wastewater treatment and reuse system according to claim 5, characterized in that: The filter hole (34) is arranged obliquely. One end of the filter hole (34) is located inside the filter cartridge (32) and faces the side of the filter cartridge (32) opening. The filter hole (34) is also inclined toward the direction of gas movement in the air pipe (2).

7. The textile printing and dyeing wastewater treatment and reuse system according to claim 5, characterized in that: An internal processing unit (4) is installed on the internal supporting frame (36), and the internal processing unit (4) comprises a supporting shaft (41) fixed on the internal supporting frame (36), a rotating drum (42) is sleeved on the supporting shaft (41), the rotating drum (42) is parallel to the axis of the filter drum (32), an external driving plate (43) is fixed on the outer wall of the rotating drum (42), and arranged bristles (44) are fixed on the outer side of the external driving plate (43), the bristles (44) are in contact with the inner wall of the filter drum (32), and the bristles (44) are used to clean the inner wall of the filter drum (32).

8. The textile printing and dyeing wastewater treatment and reuse system according to claim 7, characterized in that: The bristles (44) are rigid, and the outer ends of the bristles (44) are rounded.

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