A wastewater treatment device for printing and dyeing

Abstract

This invention discloses a wastewater treatment device for dyeing and printing processing, belonging to the technical field of wastewater treatment devices. It mainly includes a pretreatment chamber and a biological treatment chamber, with an inlet regulating mechanism between them. A regulating chamber is fixedly located at the front of the pretreatment chamber, and a coagulation chamber is located behind it. A flocculation chamber is fixedly located on one side of the coagulation chamber, and an air flotation chamber is fixedly located on the other side. A clear water chamber is fixedly located on the other side of the air flotation chamber, and a scum chamber is fixedly located above the clear water chamber. The biological treatment chamber includes three sets of anaerobic chambers, each with an aerobic chamber fixedly located behind it. This invention, by setting up an inlet regulating mechanism, adjusts the total water volume control component to regulate the amount of wastewater entering the subsequent biological treatment chamber as the water volume of the dyeing and printing plant fluctuates. Similarly, by adjusting the water quality regulating component to adjust the water quality, the inlet volume of each subsequent biological treatment chamber is changed in batches as the water quality of the dyeing and printing plant fluctuates. This invention is mainly used for wastewater treatment in small-scale dyeing and printing plants.

Description

Technical Field

[0001] This invention belongs to the technical field of wastewater treatment devices, and more specifically, relates to a wastewater treatment device for dyeing and printing processing. Background Technology

[0002] The textile printing and dyeing industry is an important traditional pillar industry in my country, and also one of the key industries with high water consumption and high pollution emissions. The annual wastewater discharge of the printing and dyeing industry in China reaches billions of tons, accounting for more than 10% of the total industrial wastewater discharge. There are a large number of small formal printing and dyeing plants in China, which are scattered and small in scale, and are one of the main groups discharging printing and dyeing wastewater. Their production is intermittent, and the wastewater volume varies greatly, with drastic fluctuations in water quality. The wastewater contains a large amount of fiber lint, sizing, dyes and colloidal pollutants. Existing large-scale wastewater treatment equipment occupies a large area, has high investment and operating costs, and is complicated to operate, making it unsuitable for small plant conditions; simple treatment devices are also difficult to consistently meet standards.

[0003] Chinese Patent Publication No. CN119349818A discloses a wastewater treatment device for polypropylene fiber printing and dyeing processing, comprising: a primary tank, which is fixedly installed at the top center of a secondary tank; the lower port of the primary tank is fixedly connected to the upper port of a central cylinder, and the bottom of the central cylinder is fixedly connected to a slag discharge pipe, the outlet of which is fixedly installed on the upper side wall of the secondary tank; and a rotating shaft, the two ends of which rotatably pass through and fit against the axis of the central cylinder, with a transmission gear ring coaxially fixedly installed on the outer wall of the end of the rotating shaft; the device can automatically collect and discharge precipitated impurities, and at the same time clean the filter structure inside the device, thereby effectively reducing the impurities accumulated inside the device.

[0004] In later use, the device still has the following problems: it is difficult to apply to real wastewater treatment situations, and the treatment effect is poor. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a wastewater treatment device for printing and dyeing processing. The device adjusts the total water volume control component according to the fluctuation of water volume in the printing and dyeing plant, thereby adjusting the amount of wastewater entering the downstream biochemical chamber. It also adjusts the water quality adjustment component according to the fluctuation of water quality in the printing and dyeing plant, thereby changing the amount of water entering each downstream biochemical chamber in batches.

[0006] The aforementioned wastewater treatment device for dyeing and printing processes includes a pretreatment chamber and a biochemical chamber. An inlet regulating mechanism is provided between the pretreatment chamber and the biochemical chamber. A regulating chamber is fixedly located at the front of the pretreatment chamber, and an inlet pipe is fixedly connected to the outer wall of the regulating chamber. A coagulation chamber is located at the rear of the regulating chamber. A flocculation chamber is fixedly located on one side of the coagulation chamber, and an air flotation chamber is fixedly located on the other side. A clear water chamber is fixedly located on the other side of the air flotation chamber. An outlet pipe is fixedly located on the outer wall of the clear water chamber. A scum chamber is fixedly located at the top of the clear water chamber, and a foam discharge pipe is fixedly located on the outer wall of the scum chamber. A water passage chamber is fixedly located on the other side of the clear water chamber, and an outlet pipe is fixedly connected to the outer wall of the water passage chamber. The water inlet regulating mechanism includes an outer shell, inside which are a water volume control component, a water quality regulating component, and a transmission component. The biochemical chamber includes three anaerobic chambers. A sludge inlet pipe is fixedly opened at the bottom of each anaerobic chamber. A water inlet pipe is fixedly connected to the outer wall of the front of each anaerobic chamber. An aerobic chamber is fixedly opened at the rear of each of the three anaerobic chambers. A sludge inlet pipe is fixedly opened at the bottom of each aerobic chamber. A sedimentation chamber is fixedly opened at the rear of each aerobic chamber. A drain pipe is fixedly opened at the rear top of the sedimentation chamber. A return water pipe is fixedly opened at the outer top of the sedimentation chamber. A sludge discharge pipe is fixedly opened at the outer bottom of the sedimentation chamber. A sludge passing pipe is fixedly opened at the inner bottom of the sedimentation chamber. A sludge conveying pipe group is fixedly connected to the sludge passing pipe.

[0007] Preferably, a dissolved air device is fixedly installed on the outer wall of the pretreatment chamber, a flotation plate is fixedly installed in the flotation chamber, one end of the dissolved air device is connected to the flotation plate, and the other end of the dissolved air device is connected to the outlet pipe. A skimmer is fixedly installed on the top of the clear water chamber. A stirring assembly is fixedly installed in both the coagulation chamber and the flocculation chamber. A filter screen is bolted to the upper part of the regulating chamber. A biological packing frame is fixedly installed in both the anaerobic chamber and the aerobic chamber. A set of sedimentation plates is fixedly installed on the upper part of the sedimentation chamber. A submersible agitator is fixedly installed at the bottom of each anaerobic chamber. An aeration plate is fixedly installed at the bottom of each aerobic chamber. A water pipe is fixedly installed between the regulating chamber and the coagulation chamber. A second set of water pipes is fixedly installed between the coagulation chamber and the flocculation chamber. A third set of water pipes is fixedly installed between the flocculation chamber and the flotation chamber. Water pipes are fixedly installed between the anaerobic chamber and the aerobic chamber. A water pipe is also fixedly installed between the aerobic chamber and the sedimentation chamber.

[0008] Preferably, the outer shell includes a first shell, a second shell connected to the rear of the first shell by bolts, a third shell connected to the rear of the second shell by bolts, and a fourth shell connected to the rear of the third shell by bolts. Multiple sets of sliding rods are fixedly connected to the inner wall of the first shell, and a screw hole is fixedly opened at the rear end of each sliding rod. Three sets of water outlets are fixedly connected to the outer wall of the second shell. A drive motor is fixedly installed on the top outer wall of the third shell. A worm gear is rotatably connected to the top inner wall of the third shell through a bearing. A turbine is rotatably installed on the lower inner wall of the third shell, and the turbine meshes with the worm gear. A sealing ring and a bearing are fixedly installed on the front inner wall of the third shell.

[0009] Preferably, the water volume control assembly includes a valve plate and a fixing frame. The valve plate has a screw hole two fixedly provided at its center. Multiple sets of limiting slides are fixedly provided on the outer wall of the valve plate. The limiting slides are slidably connected to the slide rod. The fixing frame is fixedly connected to the screw hole one by bolts. A screw assembly is rotatably connected to the center of the fixing frame. A transmission gear one is fixedly connected to the rear of the screw assembly. The front of the screw assembly is threadedly connected to the screw hole two.

[0010] Preferably, the water quality adjustment component includes an outer rotating frame, with two sets of baffles extending forward from the outer rotating frame. The baffles are in rotatable contact with the inner wall of the housing. A connecting rotating plate is fixedly connected to the rear side wall of the outer rotating frame, and a transmission frame is fixedly connected to the center of the connecting rotating plate. A transmission gear is fixedly connected to the front of the transmission frame.

[0011] Preferably, the transmission assembly includes a rotating tube and a transmission shaft. The outer wall of the rotating tube is circumferentially fixed to the turbine. Multiple sets of slide bars are fixedly connected to the inner wall of the rotating tube. A bidirectional toothed ring is fixedly connected to the front of the transmission shaft. The front end of the bidirectional toothed ring engages with a first transmission tooth, and the rear end of the bidirectional toothed ring meshes with a second transmission tooth. A sliding groove is fixedly opened on the rear side wall of the transmission shaft, and the sliding groove is slidably connected to the slide bars. Multiple sets of oil storage slots are fixedly provided on the rear outer wall of the transmission shaft. A limit block is bolted to the rear of the transmission shaft. A push-pull screw is provided at the rear of the limit block. The push-pull screw is rotatably engaged with the housing. A handle is threadedly connected to the push-pull screw, and the handle is rotatably connected to the rear side wall of the housing. A push-pull frame is fixedly connected to the front of the push-pull screw. The push-pull frame extends forward into the housing and is rotatably engaged with the limit block. A compression spring is fixedly connected to the rear wall of the push-pull frame, and the other end of the compression spring contacts the rear inner wall of the housing.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up an inlet water regulation mechanism, the total water volume control component is adjusted according to the fluctuation of water volume in the dyeing and printing plant, thereby regulating the amount of wastewater entering the downstream biochemical chamber. According to the fluctuation of water quality in the dyeing and printing plant, the water quality regulation component is adjusted to change the inlet water volume of each downstream biochemical chamber in batches. This ensures that one or two sets of biochemical chambers can always retain healthy bacteria, avoiding the death of bacteria in the biochemical chambers due to the impact of water quality at the same time, which would affect the biochemical effect. At the same time, it allows each set of biochemical chambers to have time to stop the inlet water, allowing the bacteria inside to recover their vitality. 2. By connecting the water pipes, the inlet pipe and the return pipe are connected. When the toxicity or concentration of the wastewater entering the regulating chamber is too high, the clean water from the return pipe enters the regulating chamber from the inlet pipe to equalize the wastewater quality and reduce the pressure on subsequent treatment. At the same time, the returned clean water can flush the screen from the inside out, which can delay the clogging time of the screen to a certain extent and reduce the frequency of screen cleaning by the staff. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front structure of the present invention; Figure 2 This is a schematic diagram of the rear structure of the present invention; Figure 3 This is a schematic diagram of the top structure of the pretreatment chamber; Figure 4 This is a schematic diagram of the internal structure of the regulating chamber and the coagulation chamber; Figure 5 This is a schematic diagram of the internal structure of the pretreatment chamber; Figure 6 This is a schematic diagram of the top structure of the biochemical chamber; Figure 7 This is a schematic diagram of the internal structure of the biochemical chamber; Figure 8 This is a schematic diagram of the external structure of the water inlet regulating mechanism; Figure 9 This is a schematic diagram of the internal structure of the water inlet regulating mechanism; Figure 10 This is an exploded view of the structure of the water volume control component. Figure 11 This is a schematic diagram showing the fit between the water volume control component and the housing. Figure 12 This is an exploded view of the water quality conditioning component. Figure 13 This is a schematic diagram of the rear structure of the water quality conditioning component; Figure 14 This is an exploded view of the transmission assembly structure. Figure 15 This is a schematic diagram of the rear structure of the transmission assembly.

[0014] In the diagram, 1. Pretreatment chamber; 101. Adjustment chamber; 101A. Inlet pipe 1; 102. Coagulation chamber; 103. Flocculation chamber; 104. Air flotation chamber; 105. Clear water chamber; 105A. Outlet pipe 1; 106. Scum chamber; 106A. Foam removal pipe; 107. Water passage chamber; 107A. Outlet pipe 2; 2. Dissolved air device; 201. Air flotation disc; 3. Foam removal device; 4. Agitator assembly; 5. Filter screen; 6. Outer shell; 601. Shell 1; 601A. Slide rod; 601B. Screw hole 1; 602. Housing 2; 602A. Water outlet; 603. Housing 3; 603A. Drive motor; 603B. Worm gear; 603C. Turbine; 603D. Bearing 1; 603E. Sealing ring; 603F. Bearing 2; 604. Housing 4; 7. Water volume control assembly; 701. Valve plate; 701A. Screw hole 2; 701B. Limiting slide; 702. Fixing bracket; 703. Screw assembly; 703A. Transmission gear 1; 8. Water Quality adjustment component; 801, outer rotating frame; 801A, baffle plate; 802, connecting rotating plate; 803, transmission frame; 803A, transmission gear II; 9, transmission assembly; 901, rotating pipe; 901A, slide bar; 902, transmission shaft; 902A, double-sided gear ring; 902B, oil storage slot; 902C, slide groove; 902D, limit block; 903, push-pull screw; 903A, push-pull bracket; 904, handle; 905, compression spring; 10. Biochemical chamber; 1001, Anaerobic chamber; 1001A, Inlet pipe three; 1001B, Sludge inlet pipe one; 1002, Aerobic chamber; 1002A, Sludge inlet pipe two; 1003, Sedimentation chamber; 1003A, Return water pipe; 1003B, Drainage pipe; 1003C, Sludge discharge pipe; 1003D, Sludge passing pipe; 11, Sludge conveying pipe group; 12, Biological packing frame; 13, Settling plate group; 14, Water passing pipe; 15, Submersible mixer; 16, Aeration disc. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise explicitly specified and limited, the terms "setting," "installing," "connecting," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0016] like Figure 1 , Figure 2 , Figure 3 and Figure 6As shown, a wastewater treatment device for dyeing and printing processing includes a pretreatment chamber 1 and a biochemical chamber 10. An inlet water regulating mechanism is provided between the pretreatment chamber 1 and the biochemical chamber 10. By setting up the inlet water regulating mechanism, the total water volume control component 7 is adjusted according to fluctuations in the dyeing and printing plant's water volume, thereby regulating the amount of wastewater entering the downstream biochemical chamber 10. Similarly, the water quality regulating component 8 is adjusted according to fluctuations in the dyeing and printing plant's water quality, changing the inlet water volume of each downstream biochemical chamber 10 in batches. This ensures that one or two sets of biochemical chambers 10 can always retain healthy bacteria, preventing simultaneous impact from water quality from causing the bacteria in the biochemical chambers 10 to die and affecting the biochemical effect. Simultaneously, it allows each set of biochemical chambers 10 time to stop receiving water, allowing the bacteria within them to recover their vitality. This structure is suitable for small dyeing and printing plants with intermittent drainage and fluctuating water quality. Through staggered water distribution in different chambers, a buffer mechanism for bacterial backup is formed, significantly improving the device's resistance to water quality and quantity shocks and ensuring the long-term stable operation of the biochemical system.

[0017] By changing the transmission component 9, rotating the handle 904 moves the transmission shaft 902 forward, allowing the drive motor 603A to drive the valve plate 701, controlling the total water flow into the biochemical chamber 10. Reversing the rotation of the handle 904 moves the transmission shaft 902 backward, allowing the drive motor 603A to drive the baffle plate 801A to rotate, sequentially blocking or opening the outlet pipe 602A, thus regulating the water flow into each subsequent biochemical chamber 10. This single-motor power switching structure eliminates the need for multiple independent electric valves, simplifying the overall mechanical structure, reducing equipment costs and potential failure points, while simultaneously achieving both synchronous total flow regulation and individual branch flow regulation.

[0018] A regulating chamber 101 is fixedly installed at the front of the pretreatment chamber 1. An inlet pipe 101A is fixedly connected to the outer wall of the regulating chamber 101. The inlet pipe 101A and the return pipe 1003A are connected by a connecting pipe. When the toxicity or concentration of the wastewater entering the regulating chamber 101 is too high, the clean water from the return pipe 1003A enters the regulating chamber 101 from the inlet pipe 101A to equalize the wastewater quality and reduce the pressure of subsequent treatment. At the same time, the returned clean water can flush the screen from the inside out, which can delay the clogging time of the screen to a certain extent and reduce the frequency of screen cleaning by the staff. The system uses self-returning clean water to achieve water quality homogenization and self-cleaning of the filter screen 5. There is no need to add an additional dilution water source and manual flushing equipment. This not only buffers the impact of high-concentration wastewater, but also reduces the frequency of daily operation and maintenance and labor intensity.

[0019] A coagulation chamber 102 is located at the rear of the regulating chamber 101. A flocculation chamber 103 is fixedly located on one side of the coagulation chamber 102, and an air flotation chamber 104 is fixedly located on the other side of the flocculation chamber 103. A clear water chamber 105 is fixedly located on the other side of the air flotation chamber 104. A water outlet pipe 105A is fixedly located on the outer wall of the clear water chamber 105. A scum chamber 106 is fixedly located at the top of the clear water chamber 105, and a foam discharge pipe 106A is fixedly located on the outer wall of the scum chamber 106. The scum that has undergone flocculation and air flotation treatment floats at the top of the clear water chamber 105 and is scraped backward by the foam scraper 3, pushing the foam into the scum chamber 106 at the rear. After collection, it can be discharged from the foam discharge pipe 106A. Through coagulation and destabilization, flocculation and agglomeration, air flotation and scum collection, fiber flocs, slurry, oil and dye colloidal suspended solids in dyeing and printing wastewater are efficiently removed, reducing the pollutant load and clogging probability of subsequent biological units.

[0020] A water passage chamber 107 is fixedly installed on the other side of the clear water chamber 105. A second outlet pipe 107A is fixedly connected to the outer wall of the water passage chamber 107. After pretreatment, the dyeing and printing wastewater enters the subsequent biochemical chamber 10 through the second outlet pipe 107A and the inlet regulating mechanism for biochemical treatment, degrading the organic matter in the wastewater. The pretreated wastewater exhibits a significant reduction in suspended solids, and the water flow is stable and orderly, providing favorable inlet conditions for the downstream anaerobic and aerobic biochemical reactions and ensuring stable organic matter degradation efficiency.

[0021] The inlet regulating mechanism includes an outer shell 6, inside which are a water volume control component 7, a water quality regulating component 8, and a transmission component 9. The biochemical chamber 10 includes three anaerobic chambers 1001. An inlet pipe 1001B is fixedly opened at the bottom of each anaerobic chamber 1001. An inlet pipe 3 1001A is fixedly connected to the outer wall of the front of each anaerobic chamber 1001. An aerobic chamber 1002 is fixedly opened at the rear of each of the three anaerobic chambers 1001. An inlet pipe 2 1002A is fixedly opened at the bottom of each aerobic chamber 1002. A sedimentation chamber 1003 is fixedly opened at the rear of each aerobic chamber 1002. A drain pipe 1003B is fixedly opened on the rear wall of the top of the sedimentation chamber 1003. The treated dyeing and printing wastewater is discharged from the drain pipe 1003B, completing the wastewater treatment operation. It adopts a multi-group independent anaerobic-aerobic modular layout, combined with an integrated back-end sedimentation structure. The layout is compact and occupies a small area, making it suitable for installation conditions with limited space in small printing and dyeing plants, and the treatment process is smooth and continuous.

[0022] A return water pipe 1003A is fixedly installed on the top outer wall of the sedimentation chamber 1003, a sludge discharge pipe 1003C is fixedly installed on the bottom outer side of the sedimentation chamber 1003, and a sludge passing pipe 1003D is fixedly installed on the bottom inner side of the sedimentation chamber 1003. A distribution plate is fixedly connected between the sludge discharge pipe 1003C and the sludge passing pipe 1003D. After the sludge settles, it accumulates on both sides of the distribution plate. Opening the sludge discharge pipe 1003C discharges excess sludge, preventing sludge from accumulating more and more as the biological treatment time increases. Opening the sludge passing pipe 1003D allows the sludge to be distributed through the sludge conveying pipe group 11 to the various anaerobic chambers 1001 and aerobic chambers 1002 at the front, replenishing the bacterial community there. The distribution plate realizes the zoned collection of settled sludge, which can both discharge excess sludge to prevent sludge accumulation and expansion, and return excess sludge to replenish the bacterial community in the biological treatment chamber 10, maintain the sludge concentration balance of the system, and reduce the cost of adding external bacterial strains.

[0023] The sludge conveying pipe assembly 11 is fixedly connected to the sludge conveying pipe 1003D. The sludge conveying pipe assembly 11 can transport the sludge in the sludge conveying pipe 1003D to the front of the biochemical chamber 10 via a sewage pump. By adjusting the valves of each branch, different biochemical chambers 10 can be replenished as needed to achieve balanced control of the bacterial concentration in each chamber, adapting to the rotating operation of different chambers and avoiding the impact of bacterial decay in a single chamber on the treatment effect. Figure 4 , Figure 5 and Figure 7 As shown, a dissolved air device 2 is fixedly installed on the outer wall of the pretreatment chamber. The dissolved air device 2 is an existing device. In conjunction with the air flotation plate 201, it performs air flotation operation in the air flotation chamber 104, allowing small particulate impurities and greases after flocculation to be suspended on the top of the wastewater for cleaning. The dissolved air device 2, together with the air flotation plate 201, generates microbubbles, which accurately adsorb floc particles to achieve floating separation. The air flotation efficiency is high and there are no dead corners, which is suitable for the water quality characteristics of dyeing and printing wastewater with a lot of light suspended solids.

[0024] An air flotation plate 201 is fixedly installed inside the air flotation chamber 104. One end of the dissolved air device 2 is connected to the air flotation plate 201, and the other end of the dissolved air device 2 is connected to the outlet pipe 105A. A skimmer 3 is fixedly installed on the top of the clear water chamber 105. The skimmer 3 is an existing device that continuously scrapes and pushes scum backward into the scum chamber 106. Agitators 4 are fixedly installed in both the coagulation chamber 102 and the flocculation chamber 103. By installing agitators 4, the coagulant and flocculant are fully mixed with the wastewater, ensuring the flocculation effect. Agitators 4 enhance the mixing reaction effect of the agents and wastewater, promote the destabilization of colloids and the dense formation of flocs, and improve the coagulation and flocculation reaction rate and pollutant removal rate. A filter screen 5 is bolted to the upper part of the regulating chamber 101. Wastewater first enters the regulating chamber 101 from the top, and large impurities in the wastewater are filtered by the filter screen 5. The pre-filter 5 can pre-intercept large particles such as cloth strips, coarse fibers, and debris, protecting the downstream pipelines, valves, and reaction chambers from entanglement and blockage, and extending the service life of the equipment.

[0025] Both the anaerobic chamber 1001 and the aerobic chamber 1002 are fixedly installed with biological packing frames 12. Biological packing is tied on the biological packing frames 12 to provide a larger attachment space for the microbial community and accelerate the biochemical process. The biological packing significantly increases the specific surface area for microbial attachment, enriches a sufficient amount of functional microbial community, and improves the system's resistance to load shocks and the efficiency of organic matter degradation.

[0026] A settling plate assembly is fixedly installed on the upper part of the sedimentation chamber 1003. This assembly accelerates the settling speed of the sludge, shortens the particle settling distance, improves solid-liquid separation efficiency, reduces the required volume of the sedimentation chamber 1003, and further reduces the overall footprint of the device. Submersible agitators 15 are fixedly installed at the bottom of each anaerobic chamber 1001 to agitate the wastewater, accelerating the hydrolysis and acidification process. The volume of the anaerobic chamber 1001 is much smaller than that of the aerobic chamber 1002, allowing for a much faster hydrolysis and acidification rate than the degradation rate of organic matter in the aerobic chamber 1002. The submersible agitators 15 ensure thorough mixing of the sludge and water in the anaerobic chamber, eliminating dead-angle sedimentation and enhancing the hydrolysis, acidification, and pyrolysis effect of large-molecule organic matter.

[0027] Aeration discs 16 are fixedly installed at the bottom of the aerobic chamber 1002 to increase the oxygen content of the aerobic chamber 1002, accelerate the degradation rate, provide sufficient dissolved oxygen for aerobic microorganisms, efficiently degrade dissolved organic pollutants in wastewater, and ensure stable effluent compliance. A water pipe 14 is fixedly installed between the regulating chamber 101 and the coagulation chamber 102; a second set of water pipes 14 is fixedly installed between the coagulation chamber 102 and the flocculation chamber 103; a third set of water pipes 14 is fixedly installed between the flocculation chamber 103 and the flotation chamber 104; water pipes 14 are fixedly installed between the anaerobic chamber 1001 and the aerobic chamber 1002; and a water pipe 14 is also fixedly installed between the aerobic chamber 1002 and the sedimentation chamber 1003.

[0028] like Figure 8 and Figure 9 As shown, the outer casing 6 includes a first casing 601, a second casing 602 bolted to the rear of the first casing 601, a third casing 603 bolted to the rear of the second casing 602, and a fourth casing 604 bolted to the rear of the third casing 603. Multiple sets of sliding rods 601A are fixedly connected to the inner wall of the first casing 601. A screw hole 601B is fixedly opened at the rear end of each sliding rod 601A. Three sets of water outlets 602A are fixedly connected to the outer wall of the second casing 602. These three sets of water outlets 602A are connected to three sets of inlet pipes 1001A of the biochemical chamber 10 via flexible water hoses, introducing the pretreated wastewater into the subsequent biochemical chambers 10. The outer casing 6 adopts a split bolt assembly structure, facilitating disassembly, assembly, and maintenance. The modular pipe interface adapts to multi-chamber diversion layouts, offering simple assembly, good sealing, and easy maintenance and replacement of parts.

[0029] A drive motor 603A is fixedly installed on the top outer wall of housing 603. A worm gear 603B is rotatably connected to the top inner wall of housing 603 via bearing 603D. A turbine 603C is rotatably installed on the lower inner wall of housing 603, and the turbine 603C meshes with the worm gear 603B. A sealing ring 603E and bearing 603F are fixedly installed on the front inner wall of housing 603. The drive motor 603A drives the worm gear 603B, which in turn drives the turbine 603C to rotate. The rotation of the turbine 603C drives the water volume control component 7 or the water quality adjustment component 8 through the rotating pipe 901 and the transmission shaft 902. The inner rings of the sealing ring 603E and bearing 603F fit against the outer wall of the rotating pipe 901, providing sealing and radial support for the rotating pipe 901. It adopts 603B worm gear meshing transmission, which provides smooth transmission, speed reduction and torque increase, and strong self-locking. Combined with the 603E bearing and sealing ring structure, it has low operating wear, prevents leakage, and improves the operational stability and service life of the adjustment mechanism.

[0030] like Figure 10 and Figure 11 As shown, the water volume control assembly 7 includes a valve plate 701 and a fixing frame 702. A second screw hole 701A is fixedly provided at the center of the valve plate 701. Multiple sets of limiting slides 701B are fixedly provided on the outer wall of the valve plate 701. The limiting slides 701B are slidably connected to the slide rod 601A. The fixing frame 702 is fixedly connected to the first screw hole 601B by bolts. A screw assembly 703 is rotatably connected to the center of the fixing frame 702. A first transmission gear 703A is fixedly connected to the rear of the screw assembly 703, and the front of the screw assembly 703 is threadedly connected to the second screw hole 701A. Adopting a linear transmission structure with a screw and sliding sleeve, the valve plate 701 moves smoothly without deviation, allowing for stepless and precise adjustment of the total water inlet opening, adapting to the stable control needs of different water inlet volumes.

[0031] After the transmission gear 703A meshes with the transmission shaft 902, it drives the screw assembly 703 to rotate. Since the valve plate 701 is circumferentially fixed by the slide rod 601A, the screw drives the valve plate 701 to move back and forth on the inner wall of the housing 601. When the valve plate 701 moves backward, the greater the distance between the valve plate 701 and the outlet pipe 107A, the larger the water inflow, which can cope with situations where the water volume suddenly increases and the water quality is relatively clear. Conversely, when the valve plate 701 moves forward, the closer the distance between the valve plate 701 and the outlet pipe 107A, the smaller the water inflow, which can cope with situations where the water volume is small or the water quality is poor. By changing the flow cross section through the back-and-forth displacement of the valve plate 701, the purely mechanical throttling has no narrow flow channel, is not easily blocked by fiber lint from dyeing and printing wastewater, has a large adjustment range, and is highly adaptable to various operating conditions.

[0032] like Figure 12 and Figure 13As shown, the water quality conditioning component 8 includes an outer rotating frame 801. Two sets of baffles 801A extend forward from the outer rotating frame 801. The baffles 801A rotatably contact the inner wall of the housing 602. During rotation, the baffles 801A can block or open two sets of outlet pipes 602A, preventing wastewater from continuously impacting the three small-unit biological chambers 10 for an extended period. The biological chambers 10 are divided into three small units, each with an anaerobic chamber 1001 and an aerobic chamber 1002. A connecting rotating plate 802 is fixedly connected to the rear side wall of the outer rotating frame 801. A transmission frame 803 is fixedly connected to the center of the connecting rotating plate 802, and a transmission gear 803A is fixedly connected to the front of the transmission frame 803. The rear of the outer rotating frame 801 is fixedly connected to the connecting rotating plate 802 by bolts, and the rear center of the connecting rotating plate 802 is fixedly connected to the transmission frame 803 by bolts.

[0033] like Figure 14 and Figure 15 As shown, the transmission assembly 9 includes a rotating tube 901 and a transmission shaft 902. The outer wall of the rotating tube 901 is circumferentially fixed to the turbine 603C. Multiple sets of sliding strips 901A are fixedly connected to the inner wall of the rotating tube 901. A bidirectional toothed ring 902A is fixedly connected to the front of the transmission shaft 902. The front end of the bidirectional toothed ring 902A engages with the first transmission tooth 703A, and the rear end of the bidirectional toothed ring 902A meshes with the second transmission tooth 803A. A sliding groove 902C is fixedly opened on the rear side wall of the transmission shaft 902. The sliding groove 902C is slidably connected to the sliding strip 901A. Multiple sets of oil storage slots 902B are fixedly provided on the rear outer wall of the transmission shaft 902 to retain more lubricating oil and reduce the friction between the transmission shaft 902 and the inner wall of the rotating tube 901.

[0034] The rear of the transmission shaft 902 is bolted to a limit block 902D. The limit block 902D is provided with a push-pull screw 903 at the rear. The push-pull screw 903 is rotatably engaged with the housing 604. The push-pull screw 903 is threadedly connected to a handle 904. The handle 904 is rotatably connected to the rear side wall of the housing 604. The front of the push-pull screw 903 is fixedly connected to a push-pull bracket 903A. The push-pull bracket 903A extends forward into the housing 604. The push-pull bracket 903A is rotatably engaged with the limit block 902D. The rear wall of the push-pull bracket 903A is fixedly connected to a compression spring 905. The other end of the compression spring 905 contacts the rear inner wall of the housing 604. Rotating the throttle 904 moves the push-pull screw 903 backward or forward, controlling the backward or forward movement of the transmission shaft 902 via the limit block 902D. This shaft engages with transmission gear 803A, transmitting power from the drive motor 603A to the water quality adjustment component 8, or with transmission gear 703A, transmitting power from the drive motor 603A to the water volume control component 7. The manual throttle 904, in conjunction with the lead screw push-pull and the spring 905 for buffer positioning, enables precise switching between dual-mode transmission, making operation simple and effortless.

[0035] This wastewater treatment device for dyeing and printing processes consists of a pretreatment chamber 1, an inlet regulating mechanism, three sets of modular biochemical chambers 10, and a sedimentation chamber 1003. Wastewater flows sequentially through the regulating chamber 101, coagulation chamber 102, flocculation chamber 103, and flotation chamber 104 to complete pretreatment, removing large particulate impurities, fiber lint, grease, and colloidal suspended solids. After pretreatment, the wastewater is diverted by the inlet regulating mechanism to the three independent biochemical chambers 10, where it undergoes anaerobic hydrolysis acidification and aerobic biodegradation treatment in sequence, and finally enters the sedimentation chamber 1003 to complete mud-water separation, and the qualified wastewater is discharged.

[0036] The sedimentation chamber 1003 is equipped with a sludge diversion structure, where excess sludge is discharged externally and residual sludge is returned to replenish the bacterial communities in each biological treatment chamber, maintaining a stable sludge concentration in the system. The influent regulating mechanism uses a single drive motor 603A + worm gear 603B + sliding transmission shaft 902 structure, and relies on a manual throttle 904 to axially switch the power engagement object, realizing two regulating modes: 1. When the water volume fluctuates, switch the drive water volume control component 7, and synchronously amplify or reduce the total water inflow of the three channels through the forward and backward displacement of the valve plate 701 to adapt to changes in production water volume. 2. When water quality fluctuates, switch the drive water quality adjustment component 8, and use the baffle plate 801A to rotate and block each water outlet 602A, so as to start and stop the three sets of biochemical chambers 10 in sequence and distribute water in a gradient, so as to achieve low-load rest and bacterial preservation in some chambers and main load treatment in other chambers.

Claims

1. A wastewater treatment device for dyeing and printing processing, comprising a pretreatment chamber and a biochemical chamber, characterized in that: A water inlet regulating mechanism is provided between the pretreatment chamber and the biochemical chamber. A regulating chamber is fixedly located at the front of the pretreatment chamber, and a water inlet pipe is fixedly connected to the outer wall of the regulating chamber. A coagulation chamber is located at the rear of the regulating chamber. A flocculation chamber is fixedly located on one side of the coagulation chamber, and an air flotation chamber is fixedly located on the other side. A clear water chamber is fixedly located on the other side of the air flotation chamber, and a water outlet pipe is fixedly located on the outer wall of the clear water chamber. A scum chamber is fixedly located at the top of the clear water chamber, and a foam discharge pipe is fixedly located on the outer wall of the scum chamber. A water passage chamber is fixedly located on the other side of the clear water chamber, and a second water outlet pipe is fixedly connected to the outer wall of the water passage chamber. The water inlet regulating mechanism includes an outer shell, an outer... The shell contains a total water volume control component, a water quality adjustment component, and a transmission component. The biochemical chamber includes three anaerobic chambers. An inlet pipe is fixedly opened at the bottom of each anaerobic chamber. An inlet pipe is fixedly connected to the outer wall of the front of each anaerobic chamber. An aerobic chamber is fixedly opened at the rear of each of the three anaerobic chambers. An inlet pipe is fixedly opened at the bottom of each aerobic chamber. A sedimentation chamber is fixedly opened at the rear of each aerobic chamber. A drain pipe is fixedly opened at the rear wall of the top of the sedimentation chamber. A return water pipe is fixedly opened at the outer wall of the top of the sedimentation chamber. A sludge discharge pipe is fixedly opened at the outer side of the bottom of the sedimentation chamber. A sludge passing pipe is fixedly opened at the inner side of the bottom of the sedimentation chamber. The sludge passing pipe is fixedly connected to a sludge conveying pipe assembly.

2. The wastewater treatment device for dyeing and printing processing according to claim 1, characterized in that: A dissolved air device is fixedly installed on the outer wall of the pretreatment chamber. An air flotation plate is fixedly installed inside the air flotation chamber. One end of the dissolved air device is connected to the air flotation plate, and the other end of the dissolved air device is connected to the effluent pipe. A skimmer is fixedly installed on the top of the clear water chamber. A stirring assembly is fixedly installed in both the coagulation chamber and the flocculation chamber. A filter screen is bolted to the upper part of the regulating chamber. Biological packing frames are fixedly installed in both the anaerobic chamber and the aerobic chamber. A set of sedimentation plates is fixedly installed on the upper part of the sedimentation chamber. A submersible agitator is fixedly installed at the bottom of each anaerobic chamber. An aeration plate is fixedly installed at the bottom of each aerobic chamber. A water pipe is fixedly installed between the regulating chamber and the coagulation chamber. A second set of water pipes is fixedly installed between the coagulation chamber and the flocculation chamber. A third set of water pipes is fixedly installed between the flocculation chamber and the air flotation chamber. Water pipes are fixedly installed between the anaerobic chamber and the aerobic chamber. A water pipe is also fixedly installed between the aerobic chamber and the sedimentation chamber.

3. The wastewater treatment device for dyeing and printing processing according to claim 1, characterized in that: The outer shell includes a housing 1, a housing 2 connected to the rear of the housing 1 by bolts, a housing 3 connected to the rear of the housing 2 by bolts, and a housing 4 connected to the rear of the housing 3 by bolts. Multiple sets of sliding rods are fixedly connected to the inner wall of the housing 1, and a screw hole 1 is fixedly opened at the rear end of the sliding rod. Three sets of water outlets are fixedly connected to the outer wall of the housing 2. A drive motor is fixedly installed on the top outer wall of the housing 3. A worm gear is rotatably connected to the top inner wall of the housing 3 through a bearing 1. A turbine is rotatably installed on the lower inner wall of the housing 3, and the turbine gear meshes with the worm gear. A sealing ring and a bearing 2 are fixedly installed on the front inner wall of the housing 3.

4. The wastewater treatment device for dyeing and printing processing according to claim 1, characterized in that: The water volume control assembly includes a valve plate and a fixing frame. The valve plate has a screw hole two fixedly provided at its center. Multiple sets of limiting slides are fixedly provided on the outer wall of the valve plate. The limiting slides are slidably connected to the slide rod. The fixing frame is fixedly connected to the screw hole one by bolts. A screw assembly is rotatably connected to the center of the fixing frame. A transmission gear one is fixedly connected to the rear of the screw assembly. The front of the screw assembly is threadedly connected to the screw hole two.

5. The wastewater treatment device for dyeing and printing processing according to claim 1, characterized in that: The water quality adjustment component includes an outer rotating frame, with two sets of baffles extending forward from the outer rotating frame. The baffles are in rotatable contact with the inner wall of the second housing. A connecting rotating plate is fixedly connected to the rear side wall of the outer rotating frame. A transmission frame is fixedly connected to the center of the connecting rotating plate. A transmission gear is fixedly connected to the front of the transmission frame.

6. The wastewater treatment device for dyeing and printing processing according to claim 1, characterized in that: The transmission assembly includes a rotating tube and a transmission shaft. The outer wall of the rotating tube is circumferentially fixed to the turbine. Multiple sets of sliding strips are fixedly connected to the inner wall of the rotating tube. A bidirectional toothed ring is fixedly connected to the front of the transmission shaft. The front end of the bidirectional toothed ring engages with transmission tooth one, and the rear end of the bidirectional toothed ring meshes with transmission tooth two. A sliding groove is fixedly opened on the rear side wall of the transmission shaft, and the sliding groove is slidably connected to the sliding strips. Multiple sets of oil storage slots are fixedly provided on the rear outer wall of the transmission shaft. A limit block is bolted to the rear of the transmission shaft. A push-pull screw is provided at the rear of the limit block. The push-pull screw is rotatably engaged with the housing four. A handle is threadedly connected to the push-pull screw. The handle is rotatably connected to the rear side wall of the housing four. A push-pull frame is fixedly connected to the front of the push-pull screw. The push-pull frame extends forward into the housing four and is rotatably engaged with the limit block. A compression spring is fixedly connected to the rear wall of the push-pull frame, and the other end of the compression spring contacts the rear inner wall of the housing four.

Images