Printing and dyeing wastewater treatment oxidation pond

Abstract

The present invention discloses an oxidation pond for treating printing and dyeing wastewater, comprising: an oxidation pond, a sludge pool, and a blower room. A vent pipe is fixedly provided on the inner wall of the oxidation pond so that the blower room can supply air to the interior of the oxidation pond through the vent pipe. A stirring shaft connected to the interior of the vent pipe is rotatably provided in the middle of the oxidation pond. A bottom aeration assembly is movably provided at the bottom of the stirring shaft, and the bottom aeration assembly is used to uniformly spray the air in the vent pipe out from the bottom of the oxidation pond. The present invention shatters bubbles that collide with the surface of the vibration plate by vibrating the vibration plate, making the bubble volume smaller, increasing the gas-liquid contact area, and improving the mass transfer efficiency of oxygen from gas to liquid, thereby improving the oxygen utilization rate. At the same time, the rising speed of the shattered small bubbles will also decrease, increasing the contact opportunity between the biofilm and oxygen, improving the respiration and growth conditions of the biofilm, and improving the activity and degradation ability of the biofilm, thereby improving the sewage treatment effect and pollutant removal efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of printing and dyeing wastewater treatment, in particular to a printing and dyeing wastewater treatment oxidation pond. Background Art

[0002] In the textile industry, a large amount of printing and dyeing wastewater is generated when processing clothing fabrics through the printing and dyeing process. The printing and dyeing wastewater cannot be discharged directly into the environment and needs to be treated in an oxidation pond to purify the printing and dyeing wastewater.

[0003] MBBR is a novel biofilm wastewater treatment technology that increases the biomass and microbial activity in the reactor by adding suspended carriers, thereby improving the removal efficiency of organic pollutants. Compared with traditional activated sludge processes, MBBR has higher biomass concentrations and stronger resistance to load shocks. In the treatment of printing and dyeing wastewater, the MBBR process can effectively treat wastewater containing complex components such as dyes, slurries, dyeing auxiliaries, fiber impurities, oils, acids, alkalis, and inorganic salts.

[0004] However, in actual use of existing technologies, most oxidation ponds only supply oxygen to the oxidation pond through the aeration structure set at the bottom. The bubble volume is large, which reduces the contact opportunity between the biofilm and oxygen, thereby affecting the metabolic efficiency of microorganisms and the degradation rate of organic matter, resulting in reduced sewage treatment effect and pollutant removal efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide an oxidation pond for treating printing and dyeing wastewater to solve the problem that the bubble volume is large, which reduces the contact opportunity between the biofilm and oxygen, thereby affecting the metabolic efficiency of microorganisms and the degradation rate of organic matter, resulting in reduced sewage treatment effect and pollutant removal efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] An oxidation tank, a mud storage tank and a blower room, wherein a vent pipe is fixedly provided on the inner wall of the oxidation tank so that the blower room can supply air to the inside of the oxidation tank through the vent pipe, and a stirring shaft connected to the inside of the vent pipe is rotatably provided in the middle of the oxidation tank;

[0008] The bottom aeration assembly is movably arranged at the bottom of the stirring shaft, and is used to evenly eject the air in the ventilation pipe from the bottom of the oxidation tank and form bubbles to flow upward, thereby increasing the turbulence of the water flow, promoting the mixing of printing and dyeing wastewater and microorganisms, and improving the adsorption and degradation of organic matter in the printing and dyeing wastewater by microorganisms;

[0009] The middle aeration assembly disposed in the middle of the stirring shaft is rotated, and the middle aeration assembly is used to evenly eject the air in the vent pipe from the middle of the oxidation tank, and at the same time break the generated bubbles to reduce the volume of the bubbles, thereby increasing the gas-liquid contact area, improving the oxygen transfer efficiency, and further improving the metabolic efficiency of microorganisms and the degradation rate of organic matter;

[0010] The collecting assembly is movably arranged on the top of the stirring shaft, and is used to collect suspended matter on the liquid surface and eliminate foam on the liquid surface, thereby improving the water quality of the outlet water.

[0011] Preferably, the sludge retention pool is connected to the ventilation pipe through a pipeline, and the sludge retention pool is used to collect the sludge in the oxidation tank, and the blower room is used to pump air into the inner wall of the ventilation pipe and control the air pressure inside the ventilation pipe.

[0012] Preferably, the bottom aeration assembly includes an air supply pipe, and the air supply pipe is fixedly connected to the top of one end of the vent pipe, and the interior of the air supply pipe is connected to the interior of the vent pipe, the bottom of the stirring shaft is fixedly connected to a connecting pipe through a flange, and the connecting pipe is rotatably connected to the surface of the air supply pipe through a sealed bearing, the surface of the connecting pipe is fixedly connected to an air outlet frame, the end of the air outlet frame away from the position of the connecting pipe is a porous structure, and an air outlet groove is provided on the side wall of the air supply pipe corresponding to the position of the air outlet frame, and an air outlet hole is provided on the side wall of the connecting pipe corresponding to the position of the air outlet frame, so that the air inside the vent pipe can flow to the air outlet frame through the inside of the air outlet groove and the air outlet hole and be ejected from the surface of the air outlet frame, the top of the inner wall of the connecting pipe is fixedly connected to a first retaining frame, and the first retaining frame is rotatably connected to the surface of the vent pipe through a sealed bearing, a plurality of pressure valves are provided in the middle of the first retaining frame to make the air pressure inside the stirring shaft lower than the air pressure inside the connecting pipe, the bottom of the surface of the air supply pipe is fixedly connected to a support frame, and the support frame is fixedly connected to the bottom of the inner wall of the oxidation tank.

[0013] Preferably, the central aeration assembly includes a mounting tube, the surface of the mounting tube is fixedly connected to a plurality of stirring tubes connected to the interior of the mounting tube, the stirring tube is a hollow structure in the middle, the surface of the stirring tube is fixedly connected to a stirring blade, the top of the stirring tube is fixedly connected to a vibration plate, the middle of the vibration plate is fixedly connected to a plurality of connecting columns, and the surface of the connecting columns is fixedly connected to a plurality of vibration plates, the middle part of the stirring tube is a concave structure, the middle part of the inner wall of the stirring tube is provided with a plurality of holes so that gas can be discharged through the holes, the vibration plates correspond to the position of the holes in the middle of the inner wall of the stirring tube, so that when the vibration plates vibrate, the bubbles generated at the hole position of the stirring tube will be shattered.

[0014] Preferably, a plurality of first collision columns are fixedly connected to the bottom of the vibration plate, and a positioning rod is fixedly connected to the inner wall of the middle part of the stirring tube and the surface of the mounting tube, and the positioning rod is located at the bottom of the first collision column, and a first sleeve is movably sleeved on the surface of the positioning rod, and a second collision column is fixedly connected to the surface of the first sleeve corresponding to the position of the first collision column, so that when the first sleeve moves, it will drive the second collision column to collide with the first collision column and cause the vibration plate to vibrate, and both ends of the first sleeve are respectively fixedly connected with a damping spring, and the damping spring is movably sleeved on the surface of the positioning rod, and the two damping springs are respectively fixedly connected to the inner wall of the stirring tube and the surface of the mounting tube.

[0015] Preferably, the bottom of the first sleeve is fixedly connected to the first driving column, the surface of the stirring shaft corresponding to the mounting tube position is fixedly connected to the reinforcing tube, and the middle of the stirring shaft corresponding to the mounting tube position is fixedly connected to a plurality of connecting plates for increasing the strength of the stirring shaft, and the side walls of the mounting tube and the reinforcing tube corresponding to the first driving column position are fixedly embedded in the first guide tube, the first driving column movably passes through the first guide tube and extends to the inside of the reinforcing tube, the surface of the first guide tube corresponding to the gas pipe position is movably sleeved with the second sleeve, one end of the first driving column and the second sleeve corresponding to the gas pipe position is fixedly connected to the first driving block, the surface of the gas pipe corresponding to the reinforcing tube position is fixedly connected to the rotating disk, and the rotating disk The cam is secured to the bottom of the air pipe and has a locking plate, which allows the cam to lock onto the second support member, and the locking plate is secured to the bottom of the air pipe with a locking plate.

[0016] Preferably, the collecting assembly includes a rotating tube, and the rotating tube is fixedly connected to the surface of the stirring shaft by bolts, and the stirring shaft transmits torque to the rotating tube through a keyway and a key, and a driving groove is opened on the surface of the rotating tube, and a driving seat is movably sleeved on the surface of the rotating tube, and a driving head is fixedly connected to the inner wall of the driving seat corresponding to the position of the driving groove, so that when the rotating tube rotates, the driving seat will be driven to move up and down under the action of the driving head cooperating with the driving groove.

[0017] The top of the driving seat is movably provided with a limiting cylinder, the surface of the limiting cylinder is fixedly connected to a plurality of second guide tubes, the inner wall of the second guide tube is movably sleeved with a guide column, and the top of the guide column is fixedly connected to the mounting bracket, and the mounting bracket is fixedly connected to the top of the oxidation tank, the inner wall of the limiting cylinder is movably connected to the collecting bucket, and the bottom of the collecting bucket is fixedly connected to the second driving column, the second driving column movably passes through the limiting cylinder and is fixedly connected to the top of the driving seat, so that when the driving seat moves up and down, the collecting bucket will be driven up and down by the second driving column, the inner wall of the collecting bucket is movably connected to two collecting nets, one end of the opposite surfaces of the two collecting nets is fixedly connected to a connecting rubber strip, and the other ends of the two collecting nets are respectively fixedly connected to a magnetic rubber strip, so that the two collecting nets can be freely opened and closed for easy loading and removal of the inner wall of the collecting bucket, and the bottom of the collecting bucket and the limiting cylinder are respectively provided with a plurality of notches, and the notch area at the bottom of the collecting bucket is smaller than the notch at the bottom of the limiting cylinder, so that the water discharged from the limiting cylinder when the collecting bucket moves downward is greater than the water flowing into the collecting bucket.

[0018] Preferably, the top of the mounting frame is fixedly connected to a motor mounting frame, and the stirring shaft is rotatably connected to the inner wall of the motor mounting frame through a bearing, and the top of the stirring shaft is fixedly connected to a servo motor, and the servo motor is fixedly connected to the top of the motor mounting frame.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention shatters bubbles that collide with the surface of the vibrating plate by vibrating the vibrating plate, making the bubble volume smaller, increasing the gas-liquid contact area, and improving the mass transfer efficiency of oxygen from gas to liquid, thereby improving oxygen utilization. At the same time, the rising speed of the shattered small bubbles is also reduced, increasing the contact opportunity between the biofilm and oxygen, improving the respiration and growth conditions of the biofilm, and increasing the activity and degradation ability of the biofilm, thereby improving the sewage treatment effect and pollutant removal efficiency.

[0021] The present invention also rotates the air outlet frame, thereby causing the air outlet frame to evenly spray air while rotating, and causing the air to form an upward-flowing annular bubble group inside the oxidation tank. At this time, the bubble group increases the turbulence of the water flow and simultaneously drives the wastewater at the bottom upward to avoid sedimentation and accumulation. In addition, the bubbles drive the mixing of wastewater and microorganisms, thereby improving the adsorption and degradation of organic matter in the printing and dyeing wastewater by the microorganisms.

[0022] The present invention also allows wastewater to flow into the collection bucket and the collection net when the collection bucket moves downward, and when the collection bucket moves upward, the wastewater inside the collection net will penetrate the collection net due to gravity and enter the interior of the limiting cylinder from the gap at the bottom of the collection bucket. That is, this process can filter the suspended matter in the wastewater. Such a reciprocating cycle means that the wastewater continuously penetrates the collection bucket, which can effectively filter the suspended matter in the wastewater, and at the same time, the foam on the top of the wastewater page can be collected, thereby improving the water quality of the effluent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the printing and dyeing wastewater treatment oxidation pond of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the oxidation pond for treating printing and dyeing wastewater according to the present invention;

[0025] Figure 3 This is a top view of the oxidation pond structure for treating printing and dyeing wastewater according to the present invention;

[0026] Figure 4 This is a partial schematic diagram of the overall structure of the oxidation pond for treating printing and dyeing wastewater according to the present invention. Figure 1 ;

[0027] Figure 5 This is a partial schematic diagram of the overall structure of the oxidation pond for treating printing and dyeing wastewater according to the present invention. Figure 2 ;

[0028] Figure 6 This is a partial cross-sectional view of the overall structure of the oxidation pond for treating printing and dyeing wastewater according to the present invention;

[0029] Figure 7 This is a cross-sectional view of the structure of the bottom aeration assembly of the oxidation pond for treating printing and dyeing wastewater according to the present invention;

[0030] Figure 8 This is a cross-sectional view of the aeration component structure in the middle of the oxidation pond for treating printing and dyeing wastewater according to the present invention. Figure 1 ;

[0031] Figure 9 This is a cross-sectional view of the aeration component structure in the middle of the oxidation pond for treating printing and dyeing wastewater according to the present invention. Figure 2 ;

[0032] Figure 10 This is a schematic diagram of the stirring tube structure of the oxidation pond for treating printing and dyeing wastewater according to the present invention;

[0033] Figure 11 This is an exploded view of the stirring tube structure of the oxidation pond for treating printing and dyeing wastewater according to the present invention;

[0034] Figure 12 This is a schematic diagram of the structure of the rotating disk of the oxidation pond for treating printing and dyeing wastewater according to the present invention;

[0035] Figure 13 This is a cross-sectional view of the structure of the collection component of the oxidation pond for treating printing and dyeing wastewater according to the present invention;

[0036] Figure 14 The explosion of the collection component structure of the oxidation pond for dyeing wastewater treatment of the present invention Figure 1 ;

[0037] Figure 15 The explosion of the collection component structure of the oxidation pond for dyeing wastewater treatment of the present invention Figure 2 .

[0038] In the figure: 1. Oxidation tank; 2. Mud storage tank; 3. Blower room; 4. Ventilation pipe; 5. Agitator shaft;

[0039] 601, gas transmission pipe; 602, connecting pipe; 603, gas outlet frame; 604, gas outlet groove; 605, gas outlet hole; 606, first retaining frame; 607, supporting frame;

[0040] 701, mounting tube; 702, stirring tube; 703, stirring blade; 704, vibration plate; 705, connecting column; 706, vibration plate; 707, first collision column; 708, second collision column; 709, first sleeve; 710, positioning rod; 711, damping spring; 712, first driving column; 713, reinforcement tube; 714, first guide tube; 715, second sleeve; 716, first driving block; 717, rotating disk; 718, second driving block; 719, connecting plate; 720, second retaining frame; 721, connecting tube;

[0041] 801, rotating tube; 802, driving groove; 803, driving seat; 804, driving head; 805, second driving column; 806, collecting bucket; 807, limiting cylinder; 808, collecting net; 809, connecting rubber strip; 810, magnetic rubber strip; 811, second guide tube; 812, guide column; 813, notch;

[0042] 9. Mounting bracket; 10. Motor mounting bracket; 11. Servo motor. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] See also Figure 1-15 , the present invention provides a technical solution: including:

[0045] An oxidation pond 1, a sludge pool 2 and a blower room 3. A vent pipe 4 is fixedly provided on the inner wall of the oxidation pond 1 so that the blower room 3 provides air to the interior of the oxidation pond 1 through the vent pipe 4. The sludge pool 2 is connected to the vent pipe 4 through a pipeline, and the sludge pool 2 is used to collect the sludge in the oxidation pond 1. The blower room 3 is used to pump air into the inner wall of the vent pipe 4 and control the air pressure inside the vent pipe 4. A stirring shaft 5 connected to the interior of the vent pipe 4 is rotatably provided in the middle part of the oxidation pond 1. A motor mounting frame 10 is fixedly installed on the top of the mounting frame 9, and the stirring shaft 5 is rotatably connected to the inner wall of the motor mounting frame 10 through a bearing. A servo motor 11 is fixedly installed on the top of the stirring shaft 5, and the servo motor 11 is fixedly installed on the top of the motor mounting frame 10;

[0046] A bottom aeration assembly is movably arranged at the bottom of the stirring shaft 5, and the bottom aeration assembly is used to evenly eject the air in the vent pipe 4 from the bottom of the oxidation tank 1, and form bubbles to flow upward, thereby increasing the turbulence of the water flow, promoting the mixing of printing and dyeing wastewater and microorganisms, and improving the adsorption and degradation of organic matter in the printing and dyeing wastewater by microorganisms. The bottom aeration assembly includes an air supply pipe 601, and the air supply pipe 601 is fixedly installed on the top of one end of the vent pipe 4, and the interior of the air supply pipe 601 is connected to the interior of the vent pipe 4. A connecting pipe 602 is fixedly installed on the bottom of the stirring shaft 5 through a flange, and the connecting pipe 602 is rotatably connected to the surface of the air supply pipe 601 through a sealed bearing. An air outlet frame 603 is fixedly installed on the surface of the connecting pipe 602, and the end of the air outlet frame 603 away from the connecting pipe 602 is a porous structure. , and an air outlet groove 604 is provided on the side wall of the air delivery pipe 601 corresponding to the position of the air outlet frame 603, and an air outlet hole 605 is provided on the side wall of the connecting pipe 602 corresponding to the position of the air outlet frame 603, so that the air inside the vent pipe 4 can flow to the air outlet frame 603 through the inside of the air outlet groove 604 and the air outlet hole 605, and be ejected from the surface of the air outlet frame 603, a first retaining frame 606 is fixedly installed on the top of the inner wall of the connecting pipe 602, and the first retaining frame 606 is rotatably connected to the surface of the vent pipe 4 through a sealed bearing, a plurality of pressure valves are provided in the middle of the first retaining frame 606, so that the air pressure inside the stirring shaft 5 is lower than the air pressure inside the connecting pipe 602, and a support frame 607 is fixedly installed on the bottom of the surface of the air delivery pipe 601, and the support frame 607 is fixedly installed at the bottom of the inner wall of the oxidation pond 1;

[0047] When the above structure is in use, the air inside the ventilation pipe 4 is pumped by the blower room 3 to flow into the inside of the air delivery pipe 601, and then flows to the bottom of the connecting pipe 602 through the air outlet groove 604, and the air enters the inside of the air outlet frame 603 through the air outlet hole 605, and is ejected from the rotating air outlet frame 603, so that the air forms an upward-flowing annular bubble group inside the oxidation tank 1, which can promote the mixing of wastewater and microorganisms and improve the adsorption and degradation of organic matter in the printing and dyeing wastewater by microorganisms. By providing the first retaining frame 606 and the pressure valve therein, the air pressure inside the connecting pipe 602 will be greater than the air pressure inside the stirring shaft 5, that is, the bubbles generated by the gas ejected from the air outlet frame 603 will rise rapidly, achieving the purpose of stirring and mixing while achieving oxygenation;

[0048] The middle aeration assembly arranged in the middle of the stirring shaft 5 is rotated, and the middle aeration assembly is used to evenly spray the air in the ventilation pipe 4 outward from the middle of the oxidation tank 1, and at the same time break the bubbles generated to reduce the volume of the bubbles, thereby increasing the gas-liquid contact area, improving the oxygen transfer efficiency, and thus improving the metabolic efficiency of microorganisms and the degradation rate of organic matter. The middle aeration assembly includes a mounting pipe 701, and a plurality of stirring pipes 702 connected to the interior of the mounting pipe 701 are fixedly installed on the surface of the mounting pipe 701. The stirring pipe 702 is a hollow structure in the middle. A stirring blade 703 is fixedly installed on the surface of the stirring pipe 702, and a vibration plate 704 is fixedly installed on the top of the stirring pipe 702. A plurality of connecting blades 703 are fixedly installed in the middle of the vibration plate 704. The column 705 is connected to the stirring tube 702, and a plurality of vibration plates 706 are fixedly installed on the surface of the connecting column 705. The middle part of the stirring tube 702 is a concave structure. The middle part of the inner wall of the stirring tube 702 is provided with a plurality of holes so that the gas can be discharged through the holes. The vibration plate 706 corresponds to the position of the hole in the middle of the inner wall of the stirring tube 702, so that when the vibration plate 706 vibrates, the bubbles generated at the hole position of the stirring tube 702 will be shattered. Specifically, the air is discharged outward from the middle position of the inner wall of the stirring tube 702, wherein the air discharged from the middle of the inner wall of the stirring tube 702 will form bubbles and hit the vibration plate 706. The vibration of the vibration plate 706 will simultaneously shatter the bubbles that hit the surface of the vibration plate 706, making the bubble volume smaller, increasing the gas-liquid contact area, and improving the oxygen from the gas In order to improve the mass transfer efficiency of the body to the liquid, a plurality of first collision columns 707 are fixedly installed at the bottom of the vibration plate 704, and a positioning rod 710 is fixedly installed on the inner wall of the middle part of the stirring tube 702 and the surface of the mounting tube 701, and the positioning rod 710 is located at the bottom of the first collision column 707. The surface of the positioning rod 710 is movably sleeved with a first sleeve 709, and the surface of the first sleeve 709 corresponding to the position of the first collision column 707 is fixedly installed with a second collision column 708, so that when the first sleeve 709 moves, it will drive the second collision column 708 to collide with the first collision column 707 and make the vibration plate 704 vibrate. Specifically, when the first sleeve 709 moves back and forth intermittently, the first sleeve 709 will drive the second collision column 708 to intermittently The impact of the first collision column 707 causes the first collision column 707 to drive the vibration plate 704 to vibrate, and the vibration is transmitted to the multiple vibration plates 706 through the connecting column 705. Damping springs 711 are fixedly installed at both ends of the first sleeve 709, and the damping springs 711 are movably sleeved on the surface of the positioning rod 710. The two damping springs 711 are fixedly installed on the inner wall of the stirring tube 702 and the surface of the mounting tube 701. The first driving column 712 is fixedly installed at the bottom of the first sleeve 709. A reinforcing tube 713 is fixedly installed on the surface of the stirring shaft 5 corresponding to the mounting tube 701, and a plurality of connecting plates 719 for enhancing the strength of the stirring shaft 5 are fixedly installed in the middle of the stirring shaft 5 corresponding to the mounting tube 701.The side walls of the mounting tube 701 and the reinforcement tube 713 at the position of the first driving column 712 are fixedly embedded with a first guide tube 714. The first driving column 712 movably passes through the first guide tube 714 and extends into the interior of the reinforcement tube 713. The surface of the first guide tube 714 at the position of the gas pipe 601 is movably sleeved with a second sleeve 715. A first driving block 716 is fixedly installed on one end of the first driving column 712 and the second sleeve 715 at the position of the gas pipe 601. A rotating disk 717 is fixedly installed on the surface of the gas pipe 601 at the position of the reinforcement tube 713. A second driving block 718 is fixedly installed on one end of the rotating disk 717 at the position of the first driving block 716. When the gas pipe 601 drives the second driving block 718 to rotate through the rotating disk 717, the second driving block 718 drives the first driving block 716 to move toward one end of the gas pipe 601 under the guidance of the first driving column 712, the first guide tube 714 and the second sleeve 715.

[0049] When the above structure is in use, when the mounting tube 701 rotates, the mounting tube 701 and the rotating disk 717 rotate relative to each other, causing the second driving block 718 to intermittently drive the first driving block 716 to move toward one end of the gas pipe 601. The first driving block 716 then drives the first sleeve 709 to move via the first driving column 712, thereby squeezing and stretching the damping spring 711. The damping spring 711 then returns to its original position, causing the first sleeve 709 to intermittently reciprocate.

[0050] A connecting pipe 721 is fixedly installed on the side wall of the mounting tube 701 and the stirring blade 703 at the position corresponding to the stirring tube 702, so that the stirring shaft 5 is connected to the interior of the stirring tube 702 through the connecting pipe 721. The first guide pipe 714 is located between two adjacent connecting plates 719. A plurality of second retainers 720 are rotatably connected to the surface of the air supply pipe 601. The stirring tube 702 is fixedly mounted on the inner wall of the stirring shaft 5. The second retainers 720 have a porous structure so that the second retainers 720 do not affect the air flow inside the ventilation pipe 4.

[0051] The collecting assembly is movably arranged on the top of the stirring shaft 5, and the collecting assembly is used to collect the suspended matter on the liquid surface and eliminate the foam on the liquid surface, thereby improving the water quality of the effluent. The collecting assembly includes a rotating tube 801, and the rotating tube 801 is fixedly installed on the surface of the stirring shaft 5 by bolts. The stirring shaft 5 transmits torque to the rotating tube 801 through a keyway and a key. A driving groove 802 is provided on the surface of the rotating tube 801. A driving seat 803 is movably sleeved on the surface of the rotating tube 801, and a driving head 804 is fixedly installed on the inner wall of the driving seat 803 corresponding to the position of the driving groove 802, so that when the rotating tube 801 rotates, the driving seat 803 is driven to move up and down under the action of the driving head 804 cooperating with the driving groove 802. A limiting cylinder 807 is movably provided on the top of the driving seat 803, and a plurality of second guide tubes 811 are fixedly installed on the surface of the limiting cylinder 807. A guide column 812 is movably sleeved on the inner wall of the second guide tube 811, and a mounting bracket 9 is fixedly installed on the top of the guide column 812, and the mounting bracket 9 is fixedly installed on the oxidation tank 1 The top of the collecting barrel 806 is movably connected to the inner wall of the limiting cylinder 807, and the bottom of the collecting barrel 806 is fixedly installed with a second driving column 805. The second driving column 805 movably passes through the limiting cylinder 807 and is fixedly installed on the top of the driving seat 803, so that when the driving seat 803 moves up and down, the collecting barrel 806 is driven up and down by the second driving column 805. The inner wall of the collecting barrel 806 is movably connected to two collecting nets 808, and one end of the opposite surface of the two collecting nets 808 is fixedly installed with a connecting rubber strip 809, and the other ends of the two collection nets 808 are respectively fixed with magnetic strips 810, so that the two collection nets 808 can be freely opened and closed for easy insertion and removal from the inner wall of the collection bucket 806. The bottoms of the collection bucket 806 and the limiting cylinder 807 are respectively provided with a plurality of notches 813, and the area of ​​the notches 813 at the bottom of the collection bucket 806 is smaller than the notches 813 at the bottom of the limiting cylinder 807, so that the water discharged from the limiting cylinder 807 when the collection bucket 806 moves downward is greater than the water flowing into the collection bucket 806;

[0052] When the above structure is in use, the stirring shaft 5 drives the rotating tube 801 to rotate, and the rotating tube 801 cooperates with the driving groove 802 and the driving head 804 to drive the driving seat 803 to move back and forth up and down, and drives the collecting bucket 806 to move up and down through the second driving column 805. When the collecting bucket 806 moves downward, the wastewater will flow into the inside of the collecting bucket 806 and the collecting net 808, and when the collecting bucket 806 moves upward, the wastewater inside the collecting net 808 will penetrate the collecting net 808 due to gravity and enter the inside of the limiting cylinder 807 from the notch 813 at the bottom of the collecting bucket 806. That is, this process can filter the suspended matter in the wastewater, thereby facilitating the cleaning of impurities inside the collecting net 808.

[0053] Working principle: When in use, the invention requires that the top of the limiting cylinder 807 be lower than the liquid level during installation, and the highest position to which the collecting bucket 806 can move upward should be higher than the liquid level. When in use, the servo motor 11 drives the stirring shaft 5 to rotate, and the stirring shaft 5 drives the connecting pipe 602 to rotate, wherein the air inside the vent pipe 4 is pumped by the blower room 3 to flow into the inside of the air supply pipe 601, and then flows to the bottom of the connecting pipe 602 through the air outlet groove 604, and the air is allowed to enter the inside of the air outlet frame 603 through the air outlet hole 605. When the stirring shaft 5 rotates, the air outlet frame 603 is rotated, and the air outlet frame 603 is evenly sprayed out while rotating, and the air forms an upward-flowing annular bubble group inside the oxidation tank 1. At this time, the bubble group will increase the turbulence of the water flow, and at the same time drive the wastewater at the bottom upward to avoid sedimentation and accumulation. Driven by the bubbles, the mixing of wastewater and microorganisms can be promoted, thereby improving the adsorption and degradation of organic matter in printing and dyeing wastewater by microorganisms.

[0054] By providing the first retaining frame 606 and the pressure valve therein, when the pressure value exceeds the target value, a portion of the air will flow from the inside of the connecting pipe 602 into the inside of the stirring shaft 5 through the pressure valve, which makes the air pressure inside the connecting pipe 602 greater than the air pressure inside the stirring shaft 5, that is, the bubbles generated by the gas ejected by the air outlet frame 603 will rise rapidly, achieving the purpose of stirring and mixing while achieving oxygenation. At the same time, since the end of the air outlet frame 603 away from the connecting pipe 602 is a porous structure, the position of the rapidly rising bubbles is located on the outer circle of the stirring position of the air outlet frame 603, and does not affect the downward flow of the liquid caused by the rotation of the stirring pipe 702 and the stirring blade 703;

[0055] The air entering the stirring shaft 5 passes through the second retaining frame 720 and enters the interior of the reinforcing tube 713 through the gap between the connecting plates 719. Finally, it enters the interior of the stirring tube 702 through the connecting tube 721 and is discharged outward from the middle of the inner wall of the stirring tube 702. The air discharged from the middle of the inner wall of the stirring tube 702 forms bubbles and hits the vibrating plate 706.

[0056] When the stirring shaft 5 rotates, the stirring shaft 5 drives the mounting pipe 701, the stirring pipe 702 and the stirring blade 703 to rotate, and the stirring pipe 702 and the stirring blade 703 stir the wastewater. At the same time, since the air supply pipe 601 is kept relatively stationary with the oxidation tank 1 through the support frame 607, that is, when the mounting pipe 701 rotates, the mounting pipe 701 will rotate relative to the rotating disk 717, that is, the first driving block 716 will rotate relative to the rotating disk 717 and the second driving block 718, so that the second driving block 718 will intermittently drive the first driving block 716 to move toward one end of the air supply pipe 601. When the first driving block 716 and the second driving block 718 are staggered with each other, the first sleeve 709 is caused to move in the opposite direction under the action of the resetting of the damping spring 711, so that the mounting tube 701 drives the stirring tube 702 and the first driving column 712 to rotate. When the first driving block 716 cooperates with the second driving block 718 and the damping spring 711, the first sleeve 709 is caused to move back and forth intermittently. When the first sleeve 709 moves back and forth intermittently, the second driving block 718 is caused to move back and forth. A sleeve 709 drives the second collision column 708 to intermittently collide with the first collision column 707, and the first collision column 707 drives the vibration plate 704 to vibrate, and the vibration is transmitted to the multiple vibration plates 706 through the connecting column 705, and the vibration plates 706 vibrate and simultaneously break the bubbles that collide with the surface of the vibration plates 706, making the bubble volume smaller, increasing the gas-liquid contact area, and improving the mass transfer efficiency of oxygen from gas to liquid, thereby improving the oxygen utilization rate, and at the same time increasing the contact opportunity with suspended matter and pollutants, thereby promoting their degradation, improving the metabolic efficiency of microorganisms and the degradation rate of organic matter, and helping The invention improves the sewage treatment effect and the pollutant removal efficiency. In addition, the bubbles will penetrate the gaps between the multiple vibrating plates 706 during their rising process, which increases the time for the bubbles to be broken, so that the bubbles can be effectively broken and the volume of the bubbles can be reduced. At the same time, the rising speed of the broken small bubbles will also be reduced, which increases the contact opportunity between the biofilm and oxygen, improves the respiration and growth conditions of the biofilm, and thus improves the activity and degradation ability of the biofilm. Finally, as the stirring shaft 5 drives the rotation of the mounting tube 701 and the stirring tube 702, the bubbles float upward to participate in the work of oxygen supply and stirring, further improving the adsorption and degradation of organic matter by microorganisms.

[0057] When the stirring shaft 5 rotates, the stirring shaft 5 drives the rotating tube 801 to rotate, and then the rotating tube 801 cooperates with the driving groove 802 and the driving head 804 to drive the driving seat 803 to move back and forth up and down, and when the driving seat 803 moves up and down, the driving seat 803 drives the collecting bucket 806 to move up and down through the second driving column 805. When the collecting bucket 806 moves downward on the inner wall of the limiting cylinder 807, the collecting barrel 806 will drive the water at the bottom of the limiting cylinder 807 to squeeze out the limiting cylinder 807 from the notch 813 at the bottom of the limiting cylinder 807 through the downward movement of the collecting barrel 806, wherein the area of ​​the notch 813 at the bottom of the collecting barrel 806 is smaller than the notch 813 at the bottom of the limiting cylinder 807, so that the water discharged from the limiting cylinder 807 by the collecting barrel 806 downward is greater than the water flowing into the collecting barrel 806. At this time The top of the collection barrel 806 is below the liquid level, so that the wastewater will flow into the interior of the collection barrel 806 and the collection net 808, and when the second driving column 805 drives the collection barrel 806 to move upward, the wastewater inside the collection net 808 will penetrate the collection net 808 due to gravity and enter the interior of the limiting cylinder 807 from the notch 813 at the bottom of the collection barrel 806, that is, this process can filter the suspended matter in the wastewater. Such a reciprocating cycle means that the wastewater continuously penetrates the collection barrel 806, which can effectively filter the suspended matter in the wastewater. At the same time, it can also collect the foam on the top of the wastewater page, thereby improving the water quality of the effluent. At the same time, by setting the connecting rubber strip 809 and the magnetic rubber strip 810, the two collection nets 808 can be opened and closed for easy removal and insertion from the interior of the collection barrel 806, thereby facilitating the cleaning of impurities inside the collection net 808.

[0058] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Printing and dyeing wastewater treatment system, characterized by: include: An oxidation pond (1), a sludge storage pond (2) and a blower room (3); a vent pipe (4) is fixedly provided on the inner wall of the oxidation pond (1) so that the blower room (3) can supply air to the inside of the oxidation pond (1) through the vent pipe (4); and a stirring shaft (5) is rotatably provided in the middle of the oxidation pond (1) and is connected to the inside of the vent pipe (4); A bottom aeration assembly is movably arranged at the bottom of the stirring shaft (5), and the bottom aeration assembly is used to uniformly eject the air in the ventilation pipe (4) from the bottom of the oxidation tank (1), and form bubbles to flow upward, thereby increasing the turbulence of the water flow, promoting the mixing of printing and dyeing wastewater and microorganisms, and improving the adsorption and degradation of organic matter in the printing and dyeing wastewater by microorganisms; The bottom aeration assembly includes an air delivery pipe (601), and the air delivery pipe (601) is fixedly connected to the top of one end of the ventilation pipe (4), and the interior of the air delivery pipe (601) is connected to the interior of the ventilation pipe (4); The middle aeration assembly arranged in the middle of the stirring shaft (5) is rotated, and the middle aeration assembly is used to uniformly eject the air in the vent pipe (4) outward from the middle of the oxidation tank (1), and at the same time, break the generated bubbles to reduce the volume of the bubbles, thereby increasing the gas-liquid contact area, improving the oxygen transfer efficiency, and further improving the metabolic efficiency of microorganisms and the degradation rate of organic matter; The middle aeration assembly comprises a mounting tube (701), a plurality of stirring tubes (702) in communication with the interior of the mounting tube (701) are fixedly connected to the surface of the mounting tube (701), the stirring tube (702) is a hollow structure in the middle, a stirring blade (703) is fixedly connected to the surface of the stirring tube (702), a vibration plate (704) is fixedly connected to the top of the stirring tube (702), a plurality of connecting columns (705) are fixedly connected to the middle of the vibration plate (704), and a plurality of vibration plates (706) are fixedly connected to the surface of the connecting columns (705), the middle of the stirring tube (702) is a concave structure, a plurality of holes are provided in the middle of the inner wall of the stirring tube (702) so that gas can be discharged through the holes, and the vibration plates (706) correspond to the positions of the holes in the middle of the inner wall of the stirring tube (702), so that when the vibration plates (706) vibrate, bubbles generated at the holes of the stirring tube (702) are shattered; The bottom of the vibration plate (704) is fixedly connected to a plurality of first collision columns (707), the inner wall of the middle part of the stirring tube (702) and the surface of the mounting tube (701) are fixedly connected to positioning rods (710), and the positioning rods (710) are located at the bottom of the first collision columns (707), and the surface of the positioning rods (710) is movably sleeved with a first sleeve (709), and the surface of the first sleeve (709) corresponding to the position of the first collision column (707) is fixedly connected to a second collision column (707). The first sleeve (709) is provided with a second collision column (708), so that when the first sleeve (709) moves, the second collision column (708) is driven to collide with the first collision column (707) and the vibration plate (704) is vibrated. Both ends of the first sleeve (709) are respectively fixedly connected with a damping spring (711), and the damping spring (711) is movably sleeved on the surface of the positioning rod (710). The two damping springs (711) are respectively fixedly connected to the inner wall of the stirring tube (702) and the surface of the mounting tube (701); The bottom of the first sleeve (709) is fixedly connected to a first driving column (712), the surface of the stirring shaft (5) corresponding to the position of the mounting tube (701) is fixedly connected to a reinforcing tube (713), and the middle of the stirring shaft (5) corresponding to the position of the mounting tube (701) is fixedly connected to a plurality of connecting plates (719) for reinforcing the strength of the stirring shaft (5), the side walls of the mounting tube (701) and the reinforcing tube (713) corresponding to the position of the first driving column (712) are fixedly embedded with a first guide tube (714), and the first driving column (712) movably passes through the first guide tube (714) and extends to the interior of the reinforcement tube (713); the surface of the first guide tube (714) corresponding to the position of the gas pipe (601) is movably sleeved with a second sleeve (715); the first driving column (712) and one end of the second sleeve (715) corresponding to the position of the gas pipe (601) are fixedly connected to a first driving block (716); the surface of the gas pipe (601) corresponding to the position of the reinforcement tube (713) is fixedly connected to a rotating disk (717); the rotating disk (717) The second driving block (718) is fixedly connected to one end of the position corresponding to the first driving block (716), so that when the gas pipe (601) drives the second driving block (718) to rotate through the rotating disk (717), the second driving block (718) drives the first driving block (716) to move toward one end of the gas pipe (601) under the guidance of the first driving column (712), the first guide tube (714) and the second sleeve (715), and the mounting tube (701) and the stirring blade (703) are on the side of the position corresponding to the stirring pipe (702). The wall is fixedly connected with a connecting pipe (721) so that the stirring shaft (5) is connected to the inside of the stirring pipe (702) through the connecting pipe (721); the first guide pipe (714) is located between two adjacent connecting plates (719); the surface of the air delivery pipe (601) is rotatably connected with a plurality of second retaining frames (720); the stirring pipe (702) is fixedly connected to the inner wall of the stirring shaft (5); and the second retaining frames (720) are porous structures so that the second retaining frames (720) do not affect the air flow inside the ventilation pipe (4); A collecting component is movably arranged on the top of the stirring shaft (5), and is used to collect suspended matter on the liquid surface and eliminate foam on the liquid surface, thereby improving the quality of the effluent water.

2. The printing and dyeing wastewater treatment system according to claim 1, characterized in that: The sludge retention pool (2) is connected to the ventilation pipe (4) through a pipeline, and the sludge retention pool (2) is used to collect sludge in the oxidation pool (1). The blower room (3) is used to pump air into the inner wall of the ventilation pipe (4) and control the air pressure inside the ventilation pipe (4).

3. The printing and dyeing wastewater treatment system according to claim 2, characterized in that: The bottom of the stirring shaft (5) is fixedly connected to a connecting pipe (602) through a flange, and the connecting pipe (602) is rotatably connected to the surface of the air delivery pipe (601) through a sealed bearing. The surface of the connecting pipe (602) is fixedly connected to an air outlet frame (603). One end of the air outlet frame (603) away from the connecting pipe (602) is a porous structure, and an air outlet groove (604) is provided on the side wall of the air delivery pipe (601) corresponding to the air outlet frame (603). An air outlet hole (605) is provided on the side wall of the connecting pipe (602) corresponding to the air outlet frame (603), so that the air inside the vent pipe (4) can pass through the air outlet groove (60 4) and the inside of the air outlet hole (605) flow to the air outlet frame (603), and is ejected from the surface of the air outlet frame (603), the top of the inner wall of the connecting pipe (602) is fixedly connected to a first retaining frame (606), and the first retaining frame (606) is rotatably connected to the surface of the vent pipe (4) through a sealed bearing, a plurality of pressure valves are provided in the middle of the first retaining frame (606), so that the air pressure inside the stirring shaft (5) is lower than the air pressure inside the connecting pipe (602), the bottom of the surface of the air delivery pipe (601) is fixedly connected to a support frame (607), and the support frame (607) is fixedly connected to the bottom of the inner wall of the oxidation tank (1).

4. The printing and dyeing wastewater treatment system according to claim 3, characterized in that: The collecting assembly comprises a rotating tube (801), and the rotating tube (801) is fixedly connected to the surface of the stirring shaft (5) by means of bolts, the stirring shaft (5) transmits torque to the rotating tube (801) via a keyway and a key, a driving groove (802) is provided on the surface of the rotating tube (801), a driving seat (803) is movably sleeved on the surface of the rotating tube (801), and a driving head (804) is fixedly connected to the inner wall of the driving seat (803) at a position corresponding to the driving groove (802), so that when the rotating tube (801) rotates, the driving seat (803) is driven to move up and down under the action of the driving head (804) cooperating with the driving groove (802).

5. The printing and dyeing wastewater treatment system according to claim 4, characterized in that: The top of the driving seat (803) is movably provided with a limiting cylinder (807), the surface of the limiting cylinder (807) is fixedly connected with a plurality of second guide tubes (811), the inner wall of the second guide tube (811) is movably sleeved with a guide column (812), and the top of the guide column (812) is fixedly connected with a mounting frame (9), and the mounting frame (9) is fixedly connected to the top of the oxidation tank (1), the inner wall of the limiting cylinder (807) is movably connected with a collection bucket (806), and the bottom of the collection bucket (806) is fixedly connected with a second driving column (805), the second driving column (805) movably passes through the limiting cylinder (807) and is fixedly connected to the top of the driving seat (803), so that when the driving seat (803) moves up and down, it drives the collection bucket (806) through the second driving column (805). 06) moves up and down, the inner wall of the collecting bucket (806) is movably connected to two collecting nets (808), one end of the opposite surface of the two collecting nets (808) is fixedly connected to a connecting rubber strip (809), and the other end of the two collecting nets (808) is respectively fixedly connected to a magnetic rubber strip (810), so that the two collecting nets (808) can be freely opened and closed for easy loading and unloading into and out of the inner wall of the collecting bucket (806), the bottom of the collecting bucket (806) and the limiting cylinder (807) are respectively provided with a plurality of notches (813), and the area of ​​the notches (813) at the bottom of the collecting bucket (806) is smaller than the area of ​​the notches (813) at the bottom of the limiting cylinder (807), so that the water discharged from the limiting cylinder (807) when the collecting bucket (806) moves downward is greater than the water flowing into the collecting bucket (806).

6. The printing and dyeing wastewater treatment system according to claim 5, characterized in that: The top of the mounting frame (9) is fixedly connected to a motor mounting frame (10), and the stirring shaft (5) is rotatably connected to the inner wall of the motor mounting frame (10) through a bearing. The top of the stirring shaft (5) is fixedly connected to a servo motor (11), and the servo motor (11) is fixedly connected to the top of the motor mounting frame (10).

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