A wastewater treatment device for printing and dyeing

Abstract

The invention relates to a wastewater treatment device for printing and dyeing processing in the field of wastewater treatment. In the normal working process of the oxygenation device of the present application, once a single or several flow sensors detect a significant decrease in flow, it is determined that a blockage occurs in the branch pipe where the flow sensors are located. At this time, the electromagnetic block is energized to generate an adsorption force on the magnetic block, driving the active plug to move upward as a whole. At this time, with the cooperation of the active plug and the driven plug, the water remaining on the upper part of the pipe body will be discharged, and the blockage at the position of the water inlet will be blown away. After the electromagnetic block is energized for a period of time, the power is cut off, and the active plug and the driven plug move downward to inhale the wastewater in the aerobic pool. The work of the electromagnetic block is repeated. At this time, the pipe body will have a process like animal breathing, and the blockage near the water inlet will be blown away. It is not easy to perform oxygenation work only on part of the position, and it is not easy to cause the oxygen blown in to be unevenly distributed in the aerobic pool, and the effect of oxygen blowing is good.

Description

Technical Field

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

[0002] Printing and dyeing, also known as dyeing and finishing, is a processing method, and is also a general term for pre-treatment, dyeing, printing, finishing, washing, etc. A large amount of wastewater will be generated in the process of printing and dyeing. These wastewaters often contain a large amount of organic matter, which can easily cause irreversible damage to the environment if directly discharged into the environment. Therefore, printing and dyeing wastewater usually needs to be treated before discharge.

[0003] The invention patent CN201410222543.8 specification discloses a sludge-free printing and dyeing wastewater treatment process. In this application, the wastewater enters the grid filtration, the pH value is adjusted in the regulating tank, the decolorization and flocculation reaction is carried out in the decolorization tank, the printing and dyeing wastewater is electrolyzed by a high-frequency pulse generator, the activated sludge and the printing and dyeing wastewater undergo hydrolysis and acidification reactions, and is discharged into the aerobic tank to utilize oxygen metabolism and introduced into the sedimentation tank. The generated sludge is all returned to the anaerobic hydrolysis acidification tank, introduced into the sand filter tank for filtration and then flows into the oxidation pond. The treatment process of the present invention is simple, the links are compact, and the operation is simple. After a single precipitation, the COD removal rate can reach more than 70%, and the BOD removal rate is about 40%. The treated water has high quality and can meet the requirements of production reuse water. If further deep treatment is performed, it can be reused. There is no external sludge, and no excessive growth of sludge in the anaerobic biochemical tank is found. The process does not require multiple precipitations, has few steps, and greatly saves costs and improves efficiency.

[0004] In the treatment and utilization of printing and dyeing wastewater, oxidative decomposition of wastewater by microorganisms in activated sludge in an aerobic tank is an important step in the treatment of printing and dyeing wastewater. In order to meet the growth needs of microorganisms in the aerobic tank, oxygen is continuously pumped into the aerobic tank through a special pipeline in the prior art. However, the oxygen injection point in the prior art is relatively single, resulting in uneven distribution of the injected oxygen in the aerobic tank and poor oxygen injection effect. Although the prior art has a complex oxygen supply network to solve the problem of uneven oxygen distribution, as the area of ​​the aerobic tank increases, the cost of its layout and maintenance will also increase relatively significantly. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the oxygen injection point in the prior art is relatively single, resulting in uneven distribution of the injected oxygen in the aerobic tank and poor oxygen injection effect.

[0006] In order to solve the above problems, the present invention provides a wastewater treatment device for printing and dyeing processing, including an oxygenation device, the oxygenation device includes a central pipe and a plurality of branch pipes installed in an aerobic pool, the ends of the plurality of branch pipes close to the central pipe are fixedly connected to the central pipe and penetrate the central pipe and are connected to the central pipe, the end of the central pipe away from the branch pipe is fixedly connected to an atomizing nozzle, the central pipe is distributed in two sections, and a water pump is fixedly connected between the two sections of the central pipe;

[0007] The plurality of branch pipes all include a pipe body, and the ends of the plurality of pipe bodies away from the collecting pipe are all upwardly tilted, and the inner wall of the end of the pipe body away from the collecting pipe is fixedly connected with a fixing rod and an electromagnetic block, the electromagnetic block is sleeved on the outer side of the fixing rod, and the fixing rod slides from top to bottom and is connected with a driven plug and an active plug that match each other, the active plug includes a plug body 1, and the upper end of the plug body 1 is fixedly connected with a pair of magnetic blocks, and the two magnetic blocks are embedded in the upper surface of the plug body 1, the driven plug includes a plug body 2 and a sliding ring sleeved on the outer side of the fixing rod, a plurality of connecting arms are fixedly connected between the plug body 2 and the sliding ring, a compression spring is fixedly connected between the driven plug and the inner wall of the end of the pipe body away from the collecting pipe, the upwardly tilted part of the pipe body is fixedly connected to a limiting platform, a plurality of water inlets are drilled on the side wall of the pipe body, and the plurality of water inlets are located on the upper side of the limiting platform, and the plurality of water inlets are fixedly connected with filter screens matching themselves, and the plurality of branch pipes are fixedly connected with flow sensors, and the flow sensors are located at the non-upwardly tilted part of the branch pipe.

[0008] In the above-mentioned printing and dyeing wastewater treatment device, an oxygen replenishing cycle is formed in the aerobic pool as a whole, and it is not easy to oxygenate only part of the position, and it is not easy to cause the oxygen blown in to be unevenly distributed in the aerobic pool, and the effect of oxygen blowing is good.

[0009] As a further improvement of the present application, both the active plug and the driven plug adopt a stepped structure, which increases the sealing effect after the active plug and the driven plug are combined, and increases the drainage effect of the active plug and the driven plug.

[0010] As a further improvement of the present application, a floating frame is provided on the collecting pipe, and the floating frame is located between the water pump and the atomizing nozzle, and the floating frame floats above the liquid surface of the aerobic pool. A plurality of sealing films are fixedly connected to the upper opening of the floating frame, and the plurality of sealing films are all fan-shaped. When the plurality of sealing films are in a natural state, they are assembled together to completely fill the upper opening of the floating frame. When the water level in the aerobic pool is too high, the floating frame will rise with the liquid surface of the aerobic pool until the atomizing nozzle is covered on its inner side, so that the atomizing nozzle is not easily continuously flushed by the wastewater in the aerobic pool, and the atomizing nozzle is not easily blocked by the dirt mixed in the aerobic pool, and the normal operation of the atomizing nozzle is not easily affected.

[0011] As a further improvement and supplement to the present application, grooves are bored at the lower ends of the multiple sealing films, and the depth of the grooves increases as the distance from the floating frame increases. A hydrophilic coating is coated on the lower wall of the sealing film. When wastewater enters the floating frame through the gaps between the multiple sealing films, it will slide along the lower wall of the sealing film to a section of the sealing film close to the floating frame under the action of the grooves. At the same time, under the action of the hydrophilic coating, it is not easy to drip during the above-mentioned sliding process, so that the wastewater is not easy to drip directly onto the atomizing nozzle, and is not easy to affect the normal operation of the atomizing nozzle.

[0012] As a further improvement and supplement to the present application, a protective frame is placed in the floating frame, and the protective frame is sleeved on the outside of the collecting pipe. When excessive wastewater enters the floating frame, the buoyancy generated on the protective frame will lift the protective frame upward until the atomizing nozzle is covered, so that the wastewater stored in the floating frame will not affect the atomizing nozzle.

[0013] As a further improvement and supplement to the present application, a plurality of capture fibers are placed in the protective frame, and the plurality of capture fibers are overlapped with each other to form a three-dimensional structure. When the protective frame protects the atomizing nozzle, the wastewater entering through the sealing film will fall into the floating frame, and the dirt contained in the wastewater will be captured by the plurality of capture fibers. Even if the water level in the sealing film reaches the atomizing nozzle, it will not pollute the atomizing nozzle.

[0014] As another improvement of the present application, a photosensitive unit is fixedly connected to the upper end of the atomizing nozzle. When the floating frame protects the atomizing nozzle, the atomizing nozzle is in a relatively sealed environment. The light intensity measured by the photosensitive unit is low. At this time, the water pump is not easy to start, and the atomizing nozzle is not likely to spray a large amount of wastewater into the floating frame, causing the floating frame to fail.

[0015] In summary, during the normal operation of the oxygen enrichment device of the present application, once the flow rate of a single or several flow sensors drops significantly compared to other flow sensors, it is determined that a blockage occurs in the branch pipe where the flow sensor is located. At this time, the electromagnetic block is energized, generating an adsorption force on the magnetic block, driving the active plug to move upward as a whole until it moves to the position of the passive plug, driving the passive plug to move upward together. At this time, with the cooperation of the active plug and the passive plug, the remaining water on the upper part of the pipe body will be discharged, and the blockage at the water inlet will be blown away. After the electromagnetic block is energized for a period of time, it is powered off again, and the active plug and the passive plug move downward to inhale the wastewater in the aerobic pool. The above-mentioned operation of energizing and de-energizing the electromagnetic block is repeated. At this time, the pipe body will appear like an animal breathing process, blowing away the blockage near the water inlet and keeping the water inlet of the branch pipe unobstructed.

[0016] When the water level in the aerobic pool is too high, the floating frame will rise together with the liquid level in the aerobic pool until the atomizing nozzle is covered inside itself, so that the atomizing nozzle is not easily continuously flushed by the wastewater in the aerobic pool, and the atomizing nozzle is not easily blocked by the dirt mixed in the aerobic pool, and the normal operation of the atomizing nozzle is not easily affected. At the same time, the cooperation of the sealing film, the protection frame and the capture fiber is used to further increase the protection effect of the atomizing nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a simplified structural diagram of an oxygenation device of a printing and dyeing wastewater treatment device according to a first embodiment of the present application;

[0018] Figure 2 A schematic top view of an oxygenation device of a printing and dyeing wastewater treatment device according to a first embodiment of the present application;

[0019] Figure 3 This is a schematic structural diagram of the water inlet end of the oxygenation device according to the first embodiment of the present application;

[0020] Figure 4 This is a schematic cross-sectional structure diagram of the water inlet end of the oxygenation device according to the first embodiment of the present application;

[0021] Figure 5 This is a schematic structural diagram of a split piston according to a first embodiment of the present application;

[0022] Figure 6 This is a schematic diagram of the structure of the active plug according to the first embodiment of the present application;

[0023] Figure 7 This is a schematic structural diagram of a driven plug according to a first embodiment of the present application;

[0024] Figure 8 This is a schematic structural diagram of the water outlet end of the oxygenation device according to the second embodiment of the present application;

[0025] Fig. 9 This is a schematic cross-sectional structure diagram of the water outlet end of the oxygenation device according to the second embodiment of the present application;

[0026] Fig.10 This is a schematic diagram of the structural changes of the water outlet end of the oxygenation device according to the second embodiment of the present application as the liquid level changes.

[0027] Description of the numbers in the figure:

[0028] 1 branch pipe, 101 pipe body, 102 limit platform, 103 water inlet, 2 collecting pipe, 3 water pump, 4 atomizing nozzle, 5 flow sensor, 6 fixing rod, 7 active plug, 701 plug body one, 702 magnetic block, 8 driven plug, 801 plug body two, 802 sliding ring, 803 connecting arm, 9 compression spring, 10 electromagnetic block, 11 filter screen, 12 floating frame, 13 sealing film, 14 protection frame, 15 capture fiber. DETAILED DESCRIPTION

[0029] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0030] The first implementation method:

[0031] Figure 1-7 A wastewater treatment device for dyeing and printing processing is shown, including an oxygenation device, the oxygenation device includes a central pipe 2 and a plurality of branch pipes 1 installed in an aerobic pool, the ends of the plurality of branch pipes 1 close to the central pipe 2 are fixedly connected to the central pipe 2 and penetrate the central pipe 2 and are connected to the central pipe 2, the end of the central pipe 2 away from the branch pipe 1 is fixedly connected to an atomizing nozzle 4, the central pipe 2 is distributed in two sections, and a water pump 3 is fixedly connected between the two sections of the central pipe 2;

[0032] The plurality of branch pipes 1 all include a pipe body 101, and one end of the plurality of pipe bodies 101 away from the central pipe 2 is tilted upward, and the inner wall of the end of the pipe body 101 away from the central pipe 2 is fixedly connected with a fixed rod 6 and an electromagnetic block 10, and the electromagnetic block 10 is sleeved on the outer side of the fixed rod 6, and the fixed rod 6 is slidably connected from top to bottom with a driven plug 8 and an active plug 7 that match each other, and the active plug 7 includes a plug body 1 701, and the upper end of the plug body 1 701 is fixedly connected with a pair of magnetic blocks 702, and the two magnetic blocks 702 are embedded in the upper surface of the plug body 1 701, and the driven plug 8 includes a plug body 2 801 and a sliding ring 802 sleeved on the outer side of the fixed rod 6, A plurality of connecting arms 803 are fixedly connected between the plug body 801 and the sliding ring 802, a compression spring 9 is fixedly connected between the driven plug 8 and the inner wall of the end of the tube body 101 away from the collecting pipe 2, the upwardly tilted part of the tube body 101 is fixedly connected to the limiting platform 102, a plurality of water inlets 103 are opened on the side wall of the tube body 101, and the plurality of water inlets 103 are all located on the upper side of the limiting platform 102, a filter screen 11 matching the plurality of water inlets 103 is fixedly connected to the plurality of branch pipes 1, and the flow sensor 5 is located at the non-upwardly tilted part of the branch pipe 1.

[0033] The electrical structures in the present application include but are not limited to: the power supply and control methods of the water pump 3, the flow sensor 5 and the electromagnetic block 10 are all well-known technologies for those skilled in the art, such as adding a control terminal to the casing of the water pump 3, and the control terminal is respectively connected to the flow sensor 5 and the electromagnetic block 10 signals, so as to receive the detection data of the flow sensor 5 and control the working state of the electromagnetic block 10 according to the detection data. This is well-known technology for those skilled in the art and is disclosed in detail in the present application. In addition, since the present application is used in an aerobic pool, the power supply system of the above-mentioned electrical structures needs to be waterproof and leak-proof.

[0034] In the present application, the wastewater at the bottom of the aerobic pool is collected into the collecting pipe 2 through the branch pipe 1 under the action of the water pump 3, and is sprayed out by the atomizing nozzle 4 to form mist droplets. The atomized wastewater contacts with oxygen in the air and performs oxygen replenishment. After that, the oxygenated wastewater falls back to the surface of the aerobic pool to complete the oxygen replenishment, forming an oxygen replenishment cycle in the aerobic pool as a whole. It is not easy to perform oxygenation work only at part of the position, and it is not easy to cause the oxygen injected to be unevenly distributed in the aerobic pool, and the effect of oxygen injection is good.

[0035] Meanwhile, the wastewater to be treated in the aerobic tank usually contains a large amount of debris, which, once entering the branch pipe 1 , can easily cause the branch pipe 1 to be blocked.

[0036] During the normal operation of the oxygen enrichment device of the present application, due to the upward tilted design of the branch pipe 1, it is not easy for a large amount of blockage to accumulate at the position of the water inlet 103, thereby reducing the risk of blockage of the branch pipe 1. The flow sensor 5 will monitor the flow in the branch pipe 1 in real time and transmit the corresponding detection data back to the control terminal. Once the flow of a single or several flow sensors 5 is significantly lower than that of other flow sensors 5, it is determined that a blockage occurs in the branch pipe 1 where the flow sensor 5 is located. At this time, the electromagnetic block 10 is energized, generating an adsorption force on the magnetic block 702, driving the active plug 7 to move upward as a whole until it moves to the position of the driven plug 8, driving the driven plug 8 to move upward together. At this time, With the cooperation of the active plug 7 and the driven plug 8, the residual water on the upper part of the tube body 101 will be discharged, and the blockage at the water inlet 103 will be blown away. After the electromagnetic block 10 is energized for a period of time, it will be powered off. At this time, under the joint action of the self-weight of the active plug 7 and the driven plug 8 and the compression spring 9 in a compressed state, the active plug 7 and the driven plug 8 move downward to suck the wastewater in the aerobic pool. The driven plug 8 moves to the position of the limit platform 102 and stops, while the active plug 7 continues to fall under the action of its own gravity, repeating the above-mentioned operation of energizing and de-energizing the electromagnetic block 10. At this time, the tube body 101 will appear like an animal breathing process, blowing away the blockage near the water inlet 103 and keeping the water inlet of the branch pipe 1 unobstructed.

[0037] Both the active plug 7 and the driven plug 8 adopt a stepped structure, which increases the sealing effect after the active plug 7 and the driven plug 8 are combined, and increases the drainage effect of the active plug 7 and the driven plug 8.

[0038] The second implementation method:

[0039] See also Figure 8-10 A wastewater treatment device for printing and dyeing processing is shown. A floating frame 12 is sleeved on the collecting pipe 2, and the floating frame 12 is located between the water pump 3 and the atomizing nozzle 4. The floating frame 12 floats on the liquid surface of the aerobic pool. A plurality of sealing rubber sheets 13 are fixedly connected to the upper opening of the floating frame 12. The plurality of sealing rubber sheets 13 are all fan-shaped. When the plurality of sealing rubber sheets 13 are in a natural state, they are assembled together to completely fill the upper opening of the floating frame 12. Fig.10 The dotted line in the figure is the current water level. When the water level in the aerobic pool is too high, the floating frame 12 will rise together with the liquid level in the aerobic pool until the atomizing nozzle 4 is covered inside itself, so that the atomizing nozzle 4 is not easily continuously flushed by the wastewater in the aerobic pool, and the atomizing nozzle 4 is not easily blocked by the dirt mixed in the aerobic pool, which is not easy to affect the normal operation of the atomizing nozzle 4.

[0040] The lower ends of the multiple sealing films 13 are all bored with grooves, and the depth of the grooves increases as the distance from the floating frame 12 increases. The lower wall of the sealing film 13 is coated with a hydrophilic coating. When wastewater enters the floating frame 12 through the gaps between the multiple sealing films 13, it will slide along the lower wall of the sealing film 13 to the end of the sealing film 13 close to the floating frame 12 under the action of the grooves. At the same time, under the action of the hydrophilic coating, it is not easy to drip during the above sliding process, so that the wastewater is not easy to drip directly onto the atomizing nozzle 4, and it is not easy to affect the normal operation of the atomizing nozzle 4.

[0041] A protective frame 14 is placed in the floating frame 12, and the protective frame 14 is sleeved on the outside of the collecting pipe 2. When excessive wastewater enters the floating frame 12, the negative force generated on the protective frame 14 will push the protective frame 14 upward until the atomizing nozzle 4 is covered, so that the wastewater stored in the floating frame 12 will not affect the atomizing nozzle 4. A plurality of capture fibers 15 are placed in the protective frame 14, and the plurality of capture fibers 15 overlap each other to form a three-dimensional structure. When the protective frame 14 protects the atomizing nozzle 4, the wastewater entering through the sealing film 13 will fall into the floating frame 12, and the dirt contained in the wastewater will be captured by the plurality of capture fibers 15. Even if the water level in the sealing film 13 reaches the atomizing nozzle 4, it is not easy to pollute the atomizing nozzle 4. In particular, the height of the atomizing nozzle 4 in the present application is the height of the aerobic pool wall, so that when the floating frame 12 is at the highest height of the activity, such as Fig.10 As shown in the second stage, it is not easy for the floating frame 12 to be too high to cause the protection frame 14 to fail.

[0042] A photosensitive unit is fixedly connected to the upper end of the atomizing nozzle 4. When the floating frame 12 protects the atomizing nozzle 4, the atomizing nozzle 4 is in a relatively sealed environment, and the light intensity measured by the photosensitive unit is low. At this time, the water pump 3 is not easy to start, and it is not easy for the atomizing nozzle 4 to spray a large amount of waste water into the floating frame 12, causing the floating frame 12 to fail.

[0043] Compared with the first embodiment, the present embodiment mainly provides effective protection for the atomizing nozzle 4, so that it is not easily blocked by dirt mixed in the aerobic pool, and is not easily affected in the normal operation of the atomizing nozzle 4, thereby reducing the possibility of requiring maintenance.

[0044] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A wastewater treatment device for printing and dyeing processing, comprising an oxygenation device, characterized in that: The oxygenation device comprises a central pipe (2) and a plurality of branch pipes (1) installed in the aerobic pool, wherein the ends of the plurality of branch pipes (1) close to the central pipe (2) are fixedly connected to the central pipe (2) and penetrate through the central pipe (2) to be connected to the central pipe (2), and the ends of the central pipe (2) away from the branch pipes (1) are fixedly connected to an atomizing nozzle (4), and the central pipe (2) is distributed in two sections, and a water pump (3) is fixedly connected between the two sections of the central pipe (2); The plurality of branch pipes (1) each comprise a pipe body (101), and one end of the plurality of pipe bodies (101) away from the central pipe (2) each are tilted upwards; the inner wall of the end of the pipe body (101) away from the central pipe (2) is fixedly connected to a fixing rod (6) and an electromagnetic block (10); the electromagnetic block (10) is sleeved on the outside of the fixing rod (6); the fixing rod (6) is slidably connected from top to bottom to a driven plug (8) and an active plug (7) that match each other; the active plug (7) comprises a plug body 1 (701); the upper end of the plug body 1 (701) is fixedly connected to a pair of magnetic blocks (702); the two magnetic blocks (702) are embedded in the upper surface of the plug body 1 (701); the driven plug (8) comprises a plug body 2 (801) and a sliding plug sleeved on the outside of the fixing rod (6); A plurality of connecting arms (803) are fixedly connected between the plug body (801) and the sliding ring (802); a compression spring (9) is fixedly connected between the driven plug (8) and the inner wall of the end of the tube body (101) away from the collecting tube (2); the upwardly tilted portion of the tube body (101) is fixedly connected to the limiting platform (102); a plurality of water inlets (103) are cut on the side wall of the tube body (101), and the plurality of water inlets (103) are all located on the upper side of the limiting platform (102); a filter screen (11) matching the plurality of water inlets (103) is fixedly connected to the plurality of branch pipes (1); a flow sensor (5) is fixedly connected to the plurality of branch pipes (1), and the flow sensor (5) is located at the non-upwardly tilted portion of the branch pipe (1); A floating frame (12) is sleeved on the collecting pipe (2), and the floating frame (12) is located between the water pump (3) and the atomizing nozzle (4). The floating frame (12) floats above the liquid surface of the aerobic pool. A plurality of sealing rubber sheets (13) are fixedly connected to the upper opening of the floating frame (12). The plurality of sealing rubber sheets (13) are all fan-shaped. When the plurality of sealing rubber sheets (13) are in a natural state, they are assembled together to completely fill the upper opening of the floating frame (12). The plurality of sealing rubber sheets (13) The lower ends of the two nozzles (14) are each provided with a groove, and the depth of the groove increases as the distance from the floating frame (12) increases. The lower wall of the sealing film (13) is coated with a hydrophilic coating. A protective frame (14) is placed in the floating frame (12), and the protective frame (14) is sleeved on the outside of the collecting pipe (2). A plurality of capture fibers (15) are placed in the protective frame (14), and the plurality of capture fibers (15) are overlapped to form a three-dimensional structure. The upper end of the atomizing nozzle (4) is fixedly connected to a photosensitive unit.

2. A printing and dyeing wastewater treatment device according to claim 1, characterized in that: The active plug (7) and the passive plug (8) both adopt a stepped structure.

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