A dyeing and printing wastewater treatment system

Abstract

This invention belongs to the technical field of wastewater treatment systems, specifically a dyeing and printing wastewater treatment system, including an aeration tank, an aeration system, aerators, an inlet and outlet water system, and an online monitoring system; it also includes baffles, which are evenly distributed within the aeration tank, and air jet pipes are evenly arranged within the baffles, with air jet holes evenly arranged on the air jet pipes; an intercepting net is evenly arranged within the aeration tank; after the wastewater enters the aeration tank, the aerators at the bottom of the aeration tank spray air, and the air jet pipes spray air evenly through the air jet holes in the upper, middle, and lower layers of the aeration tank. By supplementing air jets at different levels of the aeration tank, air can be evenly injected into the upper, middle, and lower layers of the wastewater without excessively increasing the air jet volume, thus uniformly distributing the dissolved oxygen concentration in the wastewater. This stabilizes the dissolved oxygen concentration throughout the tank within the suitable range for microorganisms, avoiding anaerobic disintegration of bacterial flocs due to localized decreases or microbial peroxidation caused by increases, thereby improving the wastewater treatment effect.

Description

Technical Field

[0001] This invention belongs to the technical field of wastewater treatment systems, specifically a dyeing and printing wastewater treatment system. Background Technology

[0002] The dyeing and printing wastewater treatment system is a complex, segmented, synergistic treatment system combining physicochemical and biological processes. Its core objective is to remove dyes, suspended solids, high-concentration organic matter, and toxic and harmful substances from wastewater, achieving compliant discharge or reuse. The aeration tank, as the core unit of the aerobic biological treatment system, functions by oxygenating the wastewater through aeration, ensuring thorough mixing of activated sludge and wastewater, and utilizing microbial metabolism to degrade pollutants such as COD, BOD, and ammonia nitrogen. The tank is typically square or rectangular, with aerators concentrated in the central area of ​​the bottom or evenly distributed along the tank walls. The influent and effluent systems often employ a one-end influent and one-end effluent pattern.

[0003] However, during prolonged treatment, the right-angled structure of the square pool prevents the water from forming a smooth circulation, causing a sharp drop in flow velocity at the four corners. As a result, fibers and activated sludge lose kinetic energy and settle. Sludge deposits form at the four corners of the pool or the corners of the corridor partitions. These deposited sludges have a high water content, are black in color, and have a hydrogen sulfide odor. The denitrification reaction in the deposited areas produces nitrogen bubbles, which carry sludge to the surface, forming a floating sludge layer. This floating sludge enters the secondary sedimentation tank with the effluent, causing the effluent SS and COD to exceed the standards. The color of the dyeing and printing wastewater also increases due to the undegraded dyes. When the aerators are concentrated in the center of the pool, the aeration intensity in the four corner areas is weak, and the bubbles cannot reach the bottom of the pool to disturb the deposited sludge. Furthermore, the high fiber content in cotton textile and denim dyeing and printing wastewater makes it easy for sludge flocs to become entangled, accelerating the sludge deposition process. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies and solve the aforementioned technical problems, this invention proposes a dyeing and printing wastewater treatment system.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: This invention proposes a dyeing and printing wastewater treatment system, including an aeration tank, an aeration system, aerators, an influent and effluent system, and an online monitoring system; it also includes: The partitions are evenly distributed within the aeration tank, and air jet pipes are evenly arranged within the partitions, with air jet holes evenly arranged on the air jet pipes; the aeration tank is evenly provided with an interception net, and interception brushes are evenly arranged on the interception net, with the interception brushes tilted towards the holes in the interception net. A movable plate is slidably connected inside the aeration tank. The movable plate is slidably connected to a partition and in contact with an intercepting net. The movable plate is inclined and connected to a reciprocating device in the aeration tank. A flow guide plate is evenly distributed on the movable plate. The flow guide plate is inclined, and one of its bottoms is in contact with the bottom of the aeration tank. A flow pipeline is provided inside the aeration tank. The inlet of the flow pipeline is located at the inlet of the aeration tank, and the outlet is evenly distributed inside the aeration tank. The flow pipeline is connected to a circulation device installed inside the aeration tank.

[0006] Preferably, an intercepting block is slidably connected to the intercepting net, the intercepting block is in contact with the diversion plate, a locking block is slidably connected to the intercepting net via a spring, the intercepting block is connected to the locking block, an intercepting rod is slidably connected to one side of the intercepting block via a spring, an intercepting brush is sleeved and installed on the intercepting rod, a rack is provided on one side of the partition plate, the rack is connected to one end of the intercepting rod extending out of the intercepting block; a combing box is provided on one side of the intercepting block, and the combing groove on one side of the combing box is inserted into the intercepting brush, the side of the combing box away from the intercepting rod is inclined; a detection chamber is provided at the bottom of the diversion plate, a detector is provided in the detection chamber, and a collection box is slidably connected in the detection chamber, the collection box is slidably connected to a moving rod on the moving plate, and the moving rod is connected to an electric push rod installed on the moving plate.

[0007] Preferably, the bottom of the collection box is provided with an adhesive strip, the bottom of the collection box is in contact with the interception net through the adhesive strip, and a sealing plate is hinged on one side of the collection box by a torsion spring, and a flow hole is provided on the other side.

[0008] Preferably, the detection cavity is provided with a spring clip, and the spring clip extends into the inside of the collection box.

[0009] Preferably, the inner wall of the collection box is provided with a scraper contact spring.

[0010] Preferably, a sealing plate is hinged inside the detection chamber by a torsion spring. The sealing plate is located between the acquisition box and the detector, and a cleaning cotton is provided on the side of the sealing plate away from the acquisition box.

[0011] Preferably, the detection chamber is provided with a nozzle and a suction pipe, which are respectively connected to the outlet and inlet of the circulation device.

[0012] Preferably, the movable plate is provided with a feeding pipe, and the bottom of the feeding pipe is rotatably connected to the feeding plate via a torsion spring. The top is provided with an air tank that stores replenishment material. A transmission rope is provided on one side of the collection box, and one end of the transmission rope is wound around the outer periphery of the feeding plate.

[0013] Preferably, the intercepting net is provided with a guide groove near the feeding plate, and the inner walls on both sides of the guide groove are inclined.

[0014] Preferably, the aeration tank is equipped with capillary tubes, and some of the capillary tubes are wound around the baffle plate. The two ends of the capillary tubes are connected to the waste heat recovery system of the aeration tank.

[0015] The beneficial effects of this invention are as follows: 1. The dyeing and printing wastewater treatment system of the present invention, after the wastewater enters the aeration tank, the aerator is located at the bottom of the aeration tank and sprays air. The air spray pipe sprays air evenly in the upper, middle and lower layers of the aeration tank through the air spray hole. By supplementing the air spray at different layers of the aeration tank, air can be evenly injected into the upper, middle and lower layers of the wastewater without excessively increasing the air spray volume. This evens out the dissolved oxygen concentration in the wastewater, keeps the dissolved oxygen concentration of the whole tank stable within the suitable range for microorganisms, avoids the anaerobic disintegration of bacterial flocs caused by local reduction, or the microbial peroxidation caused by increase, thereby improving the wastewater treatment effect.

[0016] 2. In the dyeing and printing wastewater treatment system of the present invention, when the wastewater flows, the moving plate drives the diversion plate to move back and forth, with the bottom of the diversion plate close to the top of the interception net; when the diversion plate moves close to the inlet of the aeration tank, it guides the wastewater to flow upward, and when it moves away from the inlet, it guides the wastewater to flow onto the interception net, so that the sludge or organic matter on each layer of the interception net flows with the wastewater, which enhances the effect of breaking up sludge flocs and improves the wastewater treatment effect. Attached Figure Description

[0017] The invention will now be further described with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a partial sectional view of the invention from the side view direction; Figure 3 This is a diagram illustrating the movement of the intercept brush on the interception network; Figure 4 This is a schematic diagram of the interceptor brush overcoming the diversion plate; Figure 5 This is a schematic diagram showing the flow guide plate pushing the interceptor block away from the jamming block; Figure 6 This is a schematic diagram showing the acquisition box located inside the detection chamber; Figure 7 This is a schematic diagram of the data collection box pulling the transmission rope; Figure 8 This is a schematic diagram showing the acquisition box being moved away from the detection chamber; Figure 9 It is a cross-sectional view of the acquisition box in three-dimensional form.

[0019] In the diagram: Aeration tank 1, baffle 11, jet pipe 12, interception net 13, interception brush 14, moving plate 15, reciprocating device 16, diversion plate 17, flow pipeline 18, interception block 19, clamping block 2, interception rod 21, rack 22, combing box 23, detection chamber 24, detector 25, collection box 26, electric push rod 27, rubber strip 28, sealing plate 29, flow hole 3, spring 31, scraper 32, sealing plate 33, cleaning cotton 34, spray pipe 35, suction pipe 36, feeding pipe 37, feeding plate 38, air tank 39, transmission rope 4, guide groove 41, capillary tube 42, moving rod 43. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: To effectively solve the above problems, see the attached diagram in the instruction manual. Figure 1-9 As shown, a dyeing and printing wastewater treatment system includes an aeration tank 1, an aeration system, aerators, an influent and effluent system, and an online monitoring system. The aeration system, composed of a blower, main and branch pipelines, valves, and an air distributor, is the power system for the aerators; its air pressure and air volume directly determine the aeration effect. The aerators are the terminal execution components of the aeration system, responsible for converting air into dissolved oxygen. The influent and effluent system is the water flow control unit of the aeration tank 1, responsible for the uniform distribution of wastewater and the orderly discharge of the mixed liquor. The online monitoring system monitors key parameters in real time, providing data support for system control, including dissolved oxygen monitoring to monitor the DO concentration in the tank in real time, guiding the adjustment of the blower's air supply to avoid hypoxia or over-oxidation; pH monitoring to monitor the acidity and alkalinity of the mixed liquor, ensuring it is within the suitable range for microorganisms and triggering the acid-base dosing system in a timely manner; sludge concentration monitoring to monitor the activated sludge concentration, guiding the adjustment of the sludge return ratio and maintaining a stable bacterial population; and online ammonia nitrogen monitoring to monitor the concentration of pollutants in the influent and effluent, assess degradation efficiency, and promptly detect treatment anomalies. Also includes: The partition 11 is evenly distributed in the aeration tank 1. The partition 11 is evenly provided with jet pipes 12, and the jet pipes 12 are evenly provided with jet holes. The aeration tank 1 is evenly provided with an interception net 13, and the interception net 13 is evenly provided with an interception brush 14, and the interception brush 14 is inclined towards the holes on the interception net 13. A movable plate 15 is slidably connected to the aeration tank 1. The movable plate 15 is slidably connected to the partition plate 11 and contacts the interception net 13. The movable plate 15 is inclined and connected to the reciprocating device 16 in the aeration tank 1. A guide plate 17 is evenly provided on the movable plate 15. The guide plate 17 is inclined and one of its bottoms contacts the bottom of the aeration tank 1. A flow pipe 18 is provided in the aeration tank 1. The suction port of the flow pipe 18 is located at the inlet of the aeration tank 1, and the discharge port is evenly distributed in the aeration tank 1. The flow pipe 18 is connected to the circulation device installed in the aeration tank 1. The jet pipe 12 is connected to the aeration system and is used to uniformly spray air into multiple locations inside the aeration tank 1 in conjunction with the aerator; the intercepting brush 14 is a brush made of conventional corrosion-resistant material; the reciprocating device 16 is used to drive the moving plate 15 to move back and forth along the partition 11 inside the aeration tank 1, including a combination of electric slider and slide rail; the circulation device is used for the normal slow flow of wastewater in the aeration tank 1, for example: the flow pipe 18 draws the wastewater at the end of the aeration tank 1 and discharges it into the head end, so as to play the role of wastewater circulation; Specific workflow: After pretreatment, wastewater is discharged into aeration tank 1 through the inlet and outlet system. To avoid short-circuiting due to excessively fast wastewater flow, which would cause wastewater to flow away without being treated by bacterial flocs, the flow rate of wastewater entering aeration tank 1 is reduced, and the wastewater flows slowly from the inlet to the outlet of aeration tank 1. However, due to the slow flow of wastewater, organic impurities in the wastewater will settle at the inlet of aeration tank 1, resulting in a high organic matter content around the inlet and a low organic matter content around the outlet. The bacteria at the inlet of aeration tank 1 receive too much organic matter, resulting in insufficient decomposition and the formation of a large amount of organic matter residue. The bacteria around the outlet receive too little organic matter, which cannot meet the decomposition and consumption needs of the bacteria, leading to bacterial inactivation and other situations. As a result, the decomposition and treatment of organic impurities inside aeration tank 1 is insufficient, and the purification effect is reduced. Through the combined action of the circulation device and the flow pipeline 18, a portion of the inlet sewage is drawn in by the flow pipeline 18 and evenly discharged to various parts of the aeration tank 1 away from the inlet. This allows the sewage and sludge mixture to be evenly distributed inside the aeration tank 1. With the bacteria in the aeration tank 1 evenly dispersed, there is sufficient organic matter for the bacteria to consume and decompose, thereby improving the uniformity of the sewage treatment effect in the aeration tank 1 and thus improving the sewage treatment effect. When traditional aerators are only placed at the bottom of the tank, oxygen is consumed layer by layer as the bubbles rise, easily leading to stratification phenomena such as high oxygen levels at the bottom and low oxygen levels at the top or center and low oxygen levels at the edges. Therefore, after the sewage enters the aeration tank 1, the aerators are located at the bottom of the aeration tank 1 and spray air. The air jet pipe 12 sprays air evenly through the air jet holes in the upper, middle and lower layers of the aeration tank 1. By supplementing the air jets at different layers of the aeration tank 1, air can be evenly injected into the upper, middle and lower layers of the sewage without excessively increasing the air jet volume. This evens out the dissolved oxygen concentration in the sewage, keeps the dissolved oxygen concentration of the entire tank stable within the suitable range for microorganisms, and avoids anaerobic disintegration of bacterial flocs due to local decreases or microbial peroxidation caused by increases, thereby improving the sewage treatment effect. Furthermore, the corners and other areas prone to oxygen deficiency in the square aeration tank 1 can be targeted with oxygen supplementation through the air jets, improving the activity of bacterial flocs in these areas and preventing blackening and foul odors in the wastewater, thus improving wastewater treatment efficiency. Dyeing and printing wastewater contains a large amount of cotton fibers and yarn impurities. Traditional bottom aeration concentrates the stirring force in the lower layer, leading to sludge accumulation and fiber entanglement in the upper layer and on the tank walls. However, the rising air bubbles from the lower aerators and air jets create upward water flow, the air jets from the middle layer create horizontal propulsion, and the air jets from the upper layer create downward disturbance. The synergistic effect of these three forces causes the mixed liquor to flow within the tank, effectively breaking up sludge flocs and preventing fibers from encapsulating bacterial flocs. This also prevents sludge accumulation at the corners of the square tank and the corners of the corridors, further improving wastewater treatment efficiency. The flow also keeps the activated sludge in suspension, preventing sedimentation and accumulation that could affect the decomposition of organic matter in the wastewater. Moreover, when a sudden surge of high-concentration wastewater hits the dyeing and printing workshop, the mixing and dilution capacity can be enhanced by increasing the air supply of aerators and jet nozzles, thereby reducing the peak concentration of local organic matter and protecting the microbial community; during maintenance, group start-up and shutdown maintenance can also be carried out. When sewage flows, the interception net 13 intercepts organic matter or sludge layer by layer, dispersing and accumulating them, improving the contact effect between sludge and sewage, and improving the contact effect between bacterial flocs and organic matter, thereby improving the sewage treatment effect. The reciprocating device 16 periodically drives the moving plate 15 to move back and forth along the partition 11 in the aeration tank 1 according to the actual treatment situation. When the moving plate 15 moves back and forth, it cleans the air jet hole when it passes the air jet pipe 12 to prevent sludge and other substances from clogging the air jet hole. If necessary, brush bristles can be added to the moving plate 15 to clean the air jet hole. The moving plate 15 drives the diversion plate 17 to move back and forth, with the bottom of the diversion plate 17 close to the top of the interception net 13. When the diversion plate 17 moves close to the inlet of the aeration tank 1, it guides the sewage to flow upward. When it moves away from the inlet, it guides the sewage to flow onto the interception net 13, so that the sludge or organic matter on each layer of the interception net 13 flows with the sewage, strengthening the effect of breaking up sludge flocs and improving the sewage treatment effect. Furthermore, the diversion plate 17 located at the bottom of the movable plate 15 contacts the bottom of the aeration tank 1. When it moves back and forth, it turns up the sludge and other substances that have settled at the bottom, improving the contact effect of the sewage and thus improving the sewage treatment effect. When cleaning each time the sewage is replaced, the diversion plate 17, when it moves back and forth, squeezes the intercepting brush 14 to brush the intercepting net 13, dispersing the deposited substances away from the intercepting net 13 and flowing out of the aeration tank 1 with the treated sewage, improving the cleanliness of the aeration tank 1, reducing the residue of each sewage treatment, and avoiding affecting the subsequent sewage treatment effect.

[0022] Example 2: Based on Embodiment 1, an intercepting block 19 is slidably connected to the intercepting net 13, and the intercepting block 19 contacts the diversion plate 17. A locking block 2 is slidably connected to the intercepting net 13 via a spring, and the intercepting block 19 is connected to the locking block 2. An intercepting rod 21 is slidably connected to one side of the intercepting block 19 via a spring, and an intercepting brush 14 is sleeved and installed on the intercepting rod 21. A rack 22 is provided on one side of the partition plate 11, and the rack 22 is connected to one end of the intercepting rod 21 that extends out of the intercepting block 19. A combing box 23 is provided on one side of the intercepting block 19, and the combing groove on one side of the combing box 23 is inserted into the intercepting brush 14 to comb the air. The box 23 is tilted away from the side of the interceptor bar 21; the bottom of the diversion plate 17 is provided with a detection cavity 24, the detection cavity 24 is provided with a detector 25, and a collection box 26 is slidably connected in the detection cavity 24. The collection box 26 is slidably connected to the moving rod 43 on the moving plate 15, and the moving rod 43 is connected to the electric push rod 27 installed on the moving plate 15; when the moving rod 43 descends, the collection box 26 slides laterally along the detection cavity 24 and descends at the same time, that is, moves diagonally downwards, and the collection box 26 slides on the moving rod 43 and moves away from the moving rod 43; when the collection box 26 rises, that is, moves diagonally upwards; The bottom of the collection box 26 is provided with an adhesive strip 28, and the bottom of the collection box 26 contacts the interception net 13 through the adhesive strip 28. A sealing piece 29 is hinged to one side of the collection box 26 by a torsion spring, and a flow hole 3 is provided on the other side. The detection cavity 24 is provided with a spring piece 31, and the spring piece 31 extends into the inside of the collection box 26; The inner wall of the collection box 26 is provided with a scraper 32 that contacts a spring 31. Specific workflow: When cleaning is not required, the locking block 2 extends out under the influence of a spring and locks into the intercepting block 19, fixing the intercepting block 19 in place; when cleaning or removing residual fibers and other impurities from the sewage is required, the diversion plate 17 moves to one side and contacts the intercepting rod 21 at its bottom. The diversion plate 17 squeezes the intercepting rod 21 on one side, causing the intercepting rod 21 to move and rise along the inclined surface of the diversion plate 17 until it passes over the diversion plate 17. The intercepting rod 21 then descends and resets under the influence of a spring, causing it to flip from one side of the diversion plate 17 to the other side; then, the diversion plate 17 moves away from the inlet and squeezes and drives the intercepting rod 21 and the intercepting block 19. Located away from the inlet, the interceptor 21 is connected to the rack 22 at one end, causing it to rotate as it moves. This rotation drives the interceptor brush 14 to rotate, which sweeps across the material on the interceptor net 13, removing or entangling fibers and other impurities. When the impurities rotate and come into contact with the carding box 23, the carding groove on one side of the carding box 23 inserts into the interceptor brush 14, scraping the entangled impurities into the carding box 23, thus removing them. Additionally, steel wool or similar parts can be added to the carding box 23 to trap impurities and prevent them from being washed away by wastewater and re-entering the area. When the intercepting rod 21 approaches the outlet of aeration tank 1, it is fixed due to movement restriction. The diversion plate 17 continues to approach the outlet of aeration tank 1, causing the diversion plate 17 to squeeze the intercepting rod 21 down. After the intercepting rod 21 descends past the diversion plate 17, it is reset by the spring, achieving the purpose of flipping the intercepting rod 21 to the other side of the diversion plate 17. Then, the diversion plate 17 moves closer to the inlet of aeration tank 1, and the diversion plate 17 drives the intercepting rod 21 and the intercepting block 19 to move in the opposite direction and reset. The intercepting rod 21 brushes again to remove impurities such as fibers, improving the effect of bacterial floc decomposition of organic matter, thereby improving the sewage treatment effect. The intercepting block 19 moves to contact the locking block 2, squeezing the locking block 2 back. When the locking block 2 contacts the arc-shaped part at the bottom of the intercepting block 19, the locking block 2 extends and locks in and fixes the intercepting block 19. Furthermore, while the intercepting brush 14 brushes away impurities, it also brushes the surface of the diversion plate 17, removing sludge and other contaminants from the diversion plate 17, thus improving the cleanliness of the diversion plate 17 and preventing residual substances from contaminating subsequent wastewater treatment. Moreover, since the combing box 23 is tilted on the side away from the intercepting bar 21, its surface and the surface of the diversion plate 17 together guide the wastewater in contact, improving the flow effect of the wastewater, thereby improving the mixing effect of sludge and other substances, and thus improving the wastewater treatment effect. Furthermore, sludge and other substances in aeration tank 1 will settle to the bottom due to their weight, resulting in sewage stratification, which is not conducive to the online monitoring system's detection of sewage and affects the detection accuracy. Therefore, by using the interception net 13 to force these substances into a suspended state, it can effectively prevent cotton fibers and dye flocs from settling at the bottom of the tank to form an anaerobic layer, reduce the generation of toxic gases such as hydrogen sulfide, and protect the activity of bacterial flocs. The electric actuator 27 drives the moving rod 43 to descend, and the moving rod 43 drives the collection box 26 to descend to collect bacterial flocs, sludge, and other substances on the interception net 13. Then, the electric actuator 27 drives the collection box 26 to rise through the moving rod 43 and enter the detection chamber 24. The detector 25 detects the sewage in the collection box 26. Organic matter and bacterial flocs are in full contact, avoiding the inefficient state of sterile degradation of the upper sewage. Furthermore, traditional online monitoring often uses water samples from the upper layer of the tank, which can easily lead to data distortion due to sludge stratification. However, the electric actuator 27 lowers the collection box 26 to the interception net 13 area to directly collect mixed liquor samples enriched with flocs and activated sludge. This area is the core site for microbial degradation of organic matter, and the various indicators of the sample can truly reflect the operating status of the aeration tank 1. The sample in the collection box 26 is sent into the detection chamber 24 to quickly determine key indicators such as floc concentration, activity, and filamentous bacteria ratio, which plays an auxiliary role in the precise control of the operating status of the aeration tank 1 and improves the wastewater treatment effect. By setting the adhesive strip 28, the collection box 26 descends from the bottom and contacts the interceptor net 13 through the adhesive strip 28. The substance on the interceptor net 13 is guided by the adhesive strip 28 and flows into the collection box 26 with the sewage. When the collection box 26 is squeezed by the sewage flow, the sealing plate 29 on one side is pressed and swings open one side of the collection box 26. After the sewage carrying the detection substance enters the collection box 26, some sewage flows away through the flow hole 3, and the remaining detection substance is in the collection box 26 for detection by the detector 25. With flexible contact with the interceptor net 13, the sample collection efficiency is improved, thereby improving the detection efficiency. After the detection is completed, the collection box 26 descends again without contacting the interceptor net 13, so that the collection box 26 only contacts the sewage. The guide plate 17 drives the collection box 26 to move in the opposite direction. The sewage enters the collection box 26 through the flow hole 3 and squeezes open the sealing plate 29. The detection substance in the collection box 26 is washed away by the sewage, completing the self-cleaning purpose of the collection box 26, thereby improving the cleanliness of the collection box 26. By setting the spring clip 31, after the collection box 26 enters the detection chamber 24, the bottom of the spring clip 31 extends into the interior along the inner wall of the collection box 26, separating the detection material from the inner wall of the collection box 26. This prevents the detection material from being in contact with the inner wall of the collection box 26 for a long time, which would cause the detection material to stick to the inner wall of the collection box 26 and be difficult to clean. The spring clip 31 cleans the inner wall of the collection box 26, and together with the rinsing of the wastewater after detection, it improves the cleanliness of the collection box 26, thereby reducing the risk of the detection results being affected and thus improving the detection accuracy. By setting a scraper 32, which is square-shaped and has one end in contact with the spring 31, when the collection box 26 moves away from the spring 31, the scraper 32 scrapes off any impurities that may be adhering to the spring 31 into the collection box 26, improving the cleanliness of the spring 31 and the collection box 26, thereby improving the detection accuracy. Since the middle of the scraper 32 is hollow, it does not affect the detector 25 from passing through the scraper 32 to carry out the detection work. Furthermore, when the diversion plate 17 drives the intercepting brush 14 to reset, the collection box 26 can extend to contact the intercepting brush 14, and the intercepting brush 14 works with the sewage to clean the collection box 26 and other components, improving the cleanliness.

[0023] Example 3: Based on Embodiment 2, a sealing plate 33 is hinged in the detection cavity 24 by a torsion spring. The sealing plate 33 is located between the collection box 26 and the detector 25. A cleaning cotton 34 is provided on the side of the sealing plate 33 away from the collection box 26. The detection chamber 24 is provided with a nozzle 35 and a suction pipe 36, which are respectively connected to the outlet and inlet of the circulation device. The movable plate 15 is provided with a feeding pipe 37, and the bottom of the feeding pipe 37 is rotatably connected to the feeding plate 38 through a torsion spring. The top is provided with an air tank 39, which stores replenishment material. The collection box 26 is provided with a transmission rope 4 on one side, and one end of the transmission rope 4 is wound around the outer periphery of the feeding plate 38. Specific workflow: By setting the sealing plate 33, before the collection box 26 descends and separates from the detection chamber 24, the inside of the detection chamber 24 is still in a sealed state. The sealing plate 33 is not squeezed and swings horizontally inside the detection chamber 24, and is located below the detector 25. It is used to seal the space inside the detection chamber 24 near the detector 25, so as to avoid the detector 25 being affected by excessive contact with sewage during detection, thereby improving the accuracy of detection. When the collection box 26 enters the detection chamber 24 and approaches the detector 25, the collection box 26 squeezes the sealing plate 33 and swings to expose the detector 25 for detection. In addition, during the swinging process, the sealing plate 33 drives the cleaning cotton 34 to reciprocate across the probe of the detector 25, wiping and cleaning it, improving the cleanliness. With the cooperation of the nozzle 35 and the suction pipe 36, the outlet of the circulation device inputs water and other cleaning fluid into the nozzle 35, which is then drawn away by the suction pipe 36 after passing through the detection chamber 24. The cleaning of the detector 25 and the collection box 26 is carried out several times to improve the cleanliness of the collection box 26 and the detector 25. The growth and reproduction of microorganisms in bacterial flocs require a synergistic supply of carbon, nitrogen, phosphorus, and trace elements. Dyeing and printing wastewater commonly suffers from nitrogen and phosphorus deficiency and nutrient imbalance, necessitating precise nutrient addition. For example, the suitable fertilizer ratio for aerobic bacterial flocs is 100:5:1 (carbon, nitrogen, phosphorus). Dyeing and printing wastewater is often high in carbon and low in nitrogen and phosphorus, requiring supplementation of nitrogen and phosphorus sources. When detector 25 detects the need for nutrient supplementation, the moving rod 43 causes the collection box 26 to rise rapidly from its stationary position. The collection box 26, via the transmission rope 4, causes the feeding plate 38 to rotate clockwise and swing, after which the transmission rope 4 is released, allowing the feed to be added. The feeding plate 38 is rapidly reversed and swung back to its original position under the influence of the torsion spring. After being pulled once, the feeding plate 38 quickly opens the bottom of the feeding pipe 37 once. The gas in the gas tank 39 pushes the feed into the sewage. The gas output from the gas tank 39 makes the feeding pipe 37 continuously spray gas. It is not possible for the gas to flow into the feeding pipe 37 temporarily due to the impact of the gas, thus keeping the inside of the feeding pipe 37 dry. After the feed enters the sewage, it falls onto the interception net 13 and comes into close contact with the bacterial flocs, improving the efficiency of action and thus improving the corresponding efficiency of nutrient regulation after feeding.

[0024] Example 4: Based on Embodiment 3, the intercepting net 13 is provided with a guide groove 41 near the feeding plate 38, and the inner walls on both sides of the guide groove 41 are inclined. The aeration tank 1 is equipped with capillary tubes 42, and some of the capillary tubes 42 are wound around the baffle plate 11. The two ends of the capillary tubes 42 are connected to the waste heat recovery system of the aeration tank 1. The waste heat recovery system of the aeration tank 1 is a conventional preheating recovery system in the printing and dyeing plant. Printing and dyeing plants usually have a lot of waste heat, such as waste heat from cooling water and waste heat from steam condensate. Using waste heat to heat wastewater can significantly reduce operating costs and meet energy-saving requirements. Alternatively, a corrosion-resistant heat exchanger can be laid in the tank to indirectly heat the mixed liquid by introducing hot water or steam. At the same time, the drainage plate 17 can be used to divert sewage to ensure uniform temperature distribution. Specific workflow: By setting up the guide groove 41, after the feed material falls into the interception net 13, it is guided by the inclined inner wall of the guide groove 41 and rolls into the guide groove 41. The feed material is blocked by the inner wall of the guide groove 41, which restricts its movement, thereby improving the stability after the feed material is put in, so that the feed material and the bacterial floc can have stable contact, thereby improving the effect. The metabolic activity of aerobic floc microorganisms is directly related to temperature. In summer, when the temperature is between 25 and 30°C, the activated sludge degrades dye intermediates and cellulose at the fastest rate, and the effluent color and COD are more likely to meet the standards. In winter, the influent temperature of dyeing and printing wastewater is only 8 to 10°C. If it is not heated, the COD removal rate of the aeration tank will decrease, and the effluent will seriously exceed the standard. By setting up capillary tube 42, when hot air enters the inside of capillary tube 42, the hot air is compressed and reheated. The wastewater around the interception net 13 is heated first through capillary tube 42, which improves the temperature regulation efficiency around the floc, thereby improving the temperature regulation effect of the wastewater where the floc is located.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dyeing and printing wastewater treatment system, comprising an aeration tank (1), an aeration system, aerators, an influent and effluent system, and an online monitoring system; characterized in that, Also includes: A partition (11) is evenly distributed in the aeration tank (1). A jet pipe (12) is evenly provided in the partition (11), and a jet hole is evenly provided on the jet pipe (12). An interception net (13) is evenly provided in the aeration tank (1). An interception brush (14) is evenly provided on the interception net (13), and the interception brush (14) is inclined towards the hole on the interception net (13). A movable plate (15) is slidably connected to the aeration tank (1). The movable plate (15) is slidably connected to the partition plate (11) and in contact with the interception net (13). The movable plate (15) is inclined and connected to the reciprocating device (16) in the aeration tank (1). A guide plate (17) is evenly provided on the movable plate (15). The guide plate (17) is inclined and one bottom of the guide plate (17) is in contact with the bottom of the aeration tank (1). A flow pipe (18) is provided in the aeration tank (1). The inlet of the flow pipe (18) is located at the inlet of the aeration tank (1), and the outlet is evenly distributed in the aeration tank (1). The flow pipe (18) is connected to the circulation device installed in the aeration tank (1).

2. The dyeing and printing wastewater treatment system according to claim 1, characterized in that: An intercepting block (19) is slidably connected to the intercepting net (13), and the intercepting block (19) contacts the diversion plate (17). A locking block (2) is slidably connected to the intercepting net (13) via a spring, and the intercepting block (19) is connected to the locking block (2). An intercepting rod (21) is slidably connected to one side of the intercepting block (19) via a spring. An intercepting brush (14) is sleeved and installed on the intercepting rod (21). A rack (22) is provided on one side of the partition plate (11), and the rack (22) is connected to one end of the intercepting rod (21) that extends out of the intercepting block (19). The intercepting block (19) A combing box (23) is provided on one side, and the combing groove on one side of the combing box (23) is inserted into the intercepting brush (14). The combing box (23) is inclined on the side away from the intercepting rod (21). The bottom of the diversion plate (17) is provided with a detection chamber (24), a detector (25) is provided in the detection chamber (24), and a collection box (26) is slidably connected in the detection chamber (24). The collection box (26) is slidably connected to the moving rod (43) on the moving plate (15), and the moving rod (43) is connected to the electric push rod (27) installed on the moving plate (15).

3. The dyeing and printing wastewater treatment system according to claim 2, characterized in that: The bottom of the collection box (26) is provided with a rubber strip (28), and the bottom of the collection box (26) is in contact with the interception net (13) through the rubber strip (28). A sealing plate (29) is hinged on one side of the collection box (26) by a torsion spring, and a flow hole (3) is provided on the other side.

4. The dyeing and printing wastewater treatment system according to claim 3, characterized in that: The detection cavity (24) is provided with a spring (31), and the spring (31) extends into the collection box (26).

5. A dyeing and printing wastewater treatment system according to claim 4, characterized in that: The inner wall of the collection box (26) is provided with a scraper (32) contacting a spring (31).

6. A dyeing and printing wastewater treatment system according to claim 5, characterized in that: A sealing plate (33) is hinged inside the detection chamber (24) by a torsion spring. The sealing plate (33) is located between the collection box (26) and the detector (25). A cleaning cotton (34) is provided on the side of the sealing plate (33) away from the collection box (26).

7. A dyeing and printing wastewater treatment system according to claim 6, characterized in that: The detection chamber (24) contains a nozzle (35) and a suction pipe (36), which are connected to the outlet and inlet of the circulation device, respectively.

8. A dyeing and printing wastewater treatment system according to claim 7, characterized in that: The movable plate (15) is provided with a feeding pipe (37), and the bottom of the feeding pipe (37) is rotatably connected to the feeding plate (38) by a torsion spring. The top is provided with an air tank (39) which stores replenishment material. The collection box (26) is provided with a transmission rope (4) on one side, and one end of the transmission rope (4) is wound around the outer periphery of the feeding plate (38).

9. A dyeing and printing wastewater treatment system according to claim 8, characterized in that: The intercepting net (13) is provided with a guide groove (41) near the feeding plate (38), and the inner walls on both sides of the guide groove (41) are inclined.

10. A dyeing and printing wastewater treatment system according to claim 9, characterized in that: The aeration tank (1) is equipped with capillary tubes (42), and some of the capillary tubes (42) are wound around the partition (11). The two ends of the capillary tubes (42) are connected to the waste heat recovery system of the aeration tank (1).

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