An organic wastewater purification and treatment device

Abstract

The present invention relates to the technical field of organic wastewater treatment, and specifically relates to an organic wastewater purification treatment device, which includes a flotation chamber, a power device, a scraper, a circulation pipe, an anaerobic unit, a driving mechanism, a reflux pipe, and a dislocation hole. The power device is located above the flotation chamber, the scraper is installed on the power device, the circulation pipe is installed at the front end of the flotation chamber, the anaerobic unit is installed on the other side of the circulation pipe, the driving mechanism is installed above the anaerobic unit, the reflux pipe is installed at the bottom rear of the flotation chamber, and the dislocation hole is provided on the driving mechanism. By controlling the removal speed of the scum by the scraper, the purification efficiency under different components of the wastewater is adjusted, the up-and-down movement of the sludge in the anaerobic tank is controlled by changing the flotation speed, and at the same time, the up-and-down movement of the sludge is used to improve the wastewater purification efficiency of the reflux liquid refluxed into the flotation unit.

Description

Technical Field

[0001] The present invention relates to the technical field of organic wastewater treatment, and specifically to an organic wastewater purification and treatment device. Background Art

[0002] An organic wastewater purification and treatment device is a piece of equipment specifically used for treating wastewater containing a large amount of organic pollutants. The organic wastewater purification and treatment device utilizes the vital activities of microorganisms to degrade the organic pollutants in the wastewater in a dissolved or colloidal state, thereby purifying the wastewater, converting these organic substances into harmless substances, and enabling the wastewater to meet the discharge standards or the water quality requirements for reuse.

[0003] During the growth process of crops, organic substances such as root exudates, fallen leaves, and dead branches are produced. These organic substances are carried into the water body during rainwashing and irrigation processes, forming organic wastewater. At the same time, residues of pesticides, fertilizers, etc. discharged from farmland are also mixed in the organic wastewater; and this wastewater is different from conventional organic wastewater. It contains both high-concentration organic substances (plant residues) and low-concentration organic substances (pesticide residues). Compared with normal single-concentration organic substances, traditional treatment processes are difficult to completely treat this part of the organic substances. For example, through air flotation and redox methods, low-concentration and difficult-to-degrade substances can be quickly treated, but it is difficult to treat high-concentration and poorly biodegradable wastewater. Although anaerobic treatment and aerobic treatment methods can remove nitrogen and phosphorus, for difficult-to-degrade substances, it is difficult to achieve wastewater purification. Therefore, in the prior art, according to the characteristics of the wastewater, a three-stage treatment method of air flotation - anaerobic - aerobic is selected to improve the wastewater treatment efficiency. However, due to excessive protein and colloid substances in agricultural wastewater (such as livestock and poultry manure wastewater), after the ratio of water and flocculant is properly adjusted, the excessive protein and colloid in the wastewater (such as the viscous organic substances in livestock and poultry manure) will form a stable colloid system, wrapping the flocculant molecules, reducing the effective contact area with the target pollutants, and making it difficult for the flocculant to achieve the expected effect; at the same time, the high-concentration colloid substances will inhibit the formation speed of flocs, resulting in small and loose flocs, poor sedimentation performance, and even a cycle of "floc breakage - re-flocculation", affecting the stability of the treatment system;

[0004] Based on this, in order to solve the problem that when purifying and treating crop wastewater, due to excessive colloid substances in agricultural wastewater, the formation speed of flocs is slow, resulting in low wastewater purification efficiency, the present invention designs an organic wastewater purification and treatment device. Summary of the Invention

[0005] An organic wastewater purification and treatment device provided by the present invention solves the problem that during the purification and treatment of crop wastewater, due to excessive colloidal substances in agricultural wastewater, the formation rate of flocs is slow, resulting in low wastewater purification efficiency. By controlling the removal speed of the floating scum by the scraper, the purification efficiency under different components of the wastewater is adjusted. The up and down movement of the sludge in the anaerobic tank is controlled by changing the air flotation speed, and at the same time, the up and down movement of the sludge is used to improve the wastewater purification efficiency of the return liquid flowing back into the air flotation unit.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An organic wastewater purification and treatment device provided by the present invention includes an air flotation chamber, a power device, a scraper, a circulation pipe, an anaerobic unit, a driving mechanism, a return pipe, and a dislocation hole. The power device is located above the air flotation chamber. The scraper is installed on the power device. The circulation pipe is installed at the front end of the air flotation chamber. The anaerobic unit is installed on the other side of the circulation pipe. The driving mechanism is installed above the anaerobic unit. The return pipe is installed at the bottom rear of the air flotation chamber. The dislocation hole is provided on the driving mechanism. The driving mechanism adjusts the moving frequency of the dislocation hole aligned with the return pipe per unit time under the drive of the power device, and this moving frequency is proportional to the scraping speed of the scraper for the floating foam. The power device drives the scraper to rotate rapidly, and at the same time drives the anaerobic unit to move the sludge up and down through the driving mechanism, thereby accelerating microbial metabolism and carrying the incompletely decomposed organic matter to the upper water body. On the one hand, the mixed liquid enters the front air flotation chamber and is then adsorbed and removed by the microbubbles in the air flotation, thus reducing the burden on the subsequent treatment of grease. On the other hand, the combination of the sludge and the sewage is enhanced, the contact between the organic matter and the microorganisms is improved, and the anaerobic reaction of the sewage is accelerated, thereby increasing the purification speed of the sewage.

[0008] Preferably, the power device includes a motor, a rotating shaft, a sprocket, and a chain. The motor is installed above the air flotation chamber. The rotating shaft is arranged parallel to the air flotation chamber above the motor, and the end rotating shaft is located at one end of the air flotation chamber. The sprocket is installed on the output end of the rotating shaft on the same side as the motor. The chain is installed on the sprocket. The front scraper is used to block the floating foam from flowing into the anaerobic tank along the water flow, while the middle and rear scrapers disturb the floating foam so that it can be evenly distributed on the surface, avoiding the accumulation of the floating foam in a local area and causing a reduction in the purification efficiency.

[0009] Preferably, the anaerobic unit includes an anaerobic tank, an upper mud plate, and a lower mud plate. The anaerobic tank is installed on the other side of the circulation pipe. The upper mud plate and the lower mud plate are respectively installed in the anaerobic tank. Square gratings are provided on the surface of the upper mud plate, and circular gratings are provided on the surface of the lower mud plate. Support columns are installed between the upper mud plate and the lower mud plate. On the one hand, it can prevent sludge from accumulating at the bottom of the tank, reduce blockage, and at the same time keep the sludge evenly distributed; on the other hand, the moving sludge helps the gas generated by anaerobic digestion to be released from the sludge, thereby optimizing the activity of the sludge and preventing gas accumulation from affecting the wastewater treatment effect.

[0010] Preferably, the driving mechanism includes a cam, a driving plate, and a return spring. The cam is installed on the rotating shaft. The cam is located above the anaerobic tank. The driving plate is installed between the upper mud plate and the lower mud plate. The return spring is installed below the driving plate, and the other end of the return spring is installed on the inner wall of the anaerobic tank. When there is a lot of foam in the air flotation chamber, by accelerating the movement of the sludge, the gas generated by anaerobic consumption is quickly released, thereby improving the activity of the sludge and the efficiency of wastewater purification; at the same time, the expansion frequency of the dislocation holes per unit time increases, so that the return liquid flowing into the air flotation chamber from the anaerobic tank through the return pipe increases, reducing the concentration of suspended matter, improving the pretreatment effect of the wastewater in the air flotation chamber, and maintaining the microbial activity and enhancing the organic matter removal effect.

[0011] Preferably, elastic plates are installed on the surfaces of the upper mud plate and the lower mud plate, and compression springs are respectively installed between the elastic plates and the upper mud plate and the lower mud plate. There is a gap between the elastic plate and the grating through which the sludge can pass. During the up and down movement, the elastic plate will slide up and down under the influence of the compression spring, thereby improving the activity of the sludge.

[0012] Preferably, the elastic plate is frustum-shaped, and arc-shaped grooves are installed on the surface of the elastic plate. Part of the sludge will stay in the arc-shaped grooves, thus forming a uniform distribution.

[0013] Preferably, an air diffuser pipe is installed at the bottom of the air flotation chamber. The air diffuser pipe is divided into a fixed section and a free section. By setting the fixed section and the free section, the aeration end of the air diffuser pipe can float up and down. When the water flow is normal, at this time, the free section is always affected by the buoyancy of the water flow and floats upward. Therefore, the aeration of the air diffuser pipe is directly facing upward, and the sewage above can be aerated.

[0014] Preferably, a spray head is installed above the free section. Annularly arrayed aeration ports are provided on the surface of the spray head, and the aeration ports are obliquely arranged. On the one hand, it avoids the vertical objects in the water from falling due to gravity and blocking, thereby improving the aeration efficiency; on the other hand, it can expand the aeration range, thereby improving the water purification efficiency of the microorganisms in the air flotation chamber.

[0015] Preferably, a check valve is installed at the reflux pipe, and a bifurcated joint is installed at one end of the reflux pipe located in the air flotation chamber. The bifurcated joint transfers the reflux water to the aeration port. Under the action of the aeration pipe, the reflux water is dispersed, and then quickly mixes with the wastewater in the air flotation chamber, thereby improving the purification efficiency of microorganisms.

[0016] Preferably, an airbag is installed on the scraper. The airbag fits on both sides of the scraper. Through the principle of double airbag pressurization, the pressure on both sides of the scraper is kept balanced when passing through the wastewater, so as to ensure the uniformity of the scraping range when scraping the floating foam.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. An organic wastewater purification treatment device proposed by the present invention, through the synchronous rotation of multiple scrapers, the scum is circulated in the opposite direction of the water flow. During the scraping process of the scraper, the rotation speed of the scraper will affect the scum removal effect. When the visualized scum increases, the power device drives the scraper to rotate quickly, and at the same time drives the anaerobic unit to move the sludge up and down through the drive mechanism, thereby accelerating the microbial metabolism, carrying the incompletely decomposed organic matter to the upper water body. On the one hand, it enters the front air flotation chamber through the mixed liquid, and then is adsorbed and removed by the microbubbles in the air flotation, thus reducing the burden of subsequent oil treatment. On the other hand, it enhances the combination of sludge and sewage, improves the contact between organic matter and microorganisms, and then accelerates the anaerobic reaction of sewage, thereby improving the purification speed of sewage.

[0019] 2. An organic wastewater purification treatment device proposed by the present invention. While the anaerobic unit moves the sludge up and down, the anaerobic unit will periodically adjust the opening and closing frequency of the reflux pipe per unit time. When the rotation speed of the scraper is slow, the number of times the reflux pipe opens and closes per unit time is small at this time, and then the amount of reflux per unit time is also small, so that microorganisms and organic matter can fully contact. When the floating scum increases due to the high oil content in the air flotation chamber, at this time, by increasing the reflux speed, the microorganisms and organic matter in the anaerobic reactor can be quickly transported to the air flotation chamber, thereby enhancing the air flotation effect.

[0020] 3. An organic wastewater purification treatment device proposed by the present invention uses the method of aeration to form tiny bubbles by releasing air. These bubbles attach to the suspended matter, increasing its buoyancy and making it float to the water surface, further facilitating the separation of biological oil and low-concentration microorganisms in the wastewater. Aeration increases the dissolved oxygen in the water body, helps to degrade organic matter, is suitable for subsequent biological treatment. At the same time, aeration can also prevent the sewage from precipitating and depositing at the bottom of the air flotation chamber, thereby reducing the risk of blockage, facilitating the sewage to be discharged into the anaerobic unit, and being able to diffuse the liquid refluxed in the reflux pipe to the surroundings, so that the reflux liquid can quickly improve the air flotation separation efficiency in the air flotation chamber, thereby improving the purification speed of sewage. Brief Description of the Drawings

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are one embodiment of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the reflux pipe of the present invention;

[0024] Figure 3 is a schematic diagram of the power device of the present invention;

[0025] Figure 4 is a schematic diagram of the upper mud plate of the present invention;

[0026] Figure 5 is a schematic diagram of the driving mechanism of the present invention;

[0027] Figure 6 is Figure 5 an enlarged view of part A in

[0028] Figure 7 is a sectional view of the anaerobic pond in another direction;

[0029] Figure 8 is a schematic diagram of the aeration pipe of the present invention;

[0030] Figure 9 is a schematic diagram of the rotating plate of the present invention.

[0031] In the figure: 1. Air flotation chamber; 2. Power device; 21. Motor; 22. Rotating shaft; 23. Sprocket; 24. Chain; 3. Scraper; 31. Airbag; 4. Flow pipe; 5. Anaerobic unit; 51. Anaerobic pond; 52. Upper mud plate; 521. Square grid; 53. Lower mud plate; 531. Circular grid; 55. Elastic plate; 551. Arc-shaped groove; 56. Compression spring; 6. Driving mechanism; 61. Cam; 62. Driving plate; 63. Return spring; 7. Reflux pipe; 71. Forked joint; 8. Misaligned hole; 9. Aeration pipe; 91. Fixed section; 92. Free section; 921. Sprinkler; 922. Aeration port. Detailed Embodiments

[0032] In order to better understand the above solutions, the following will describe the above technical solutions in detail in combination with the drawings in the specification and the specific embodiments.

[0033] As shown Figure 1-2 in the figure, an organic wastewater purification and treatment device includes a flotation chamber 1, a power device 2, a scraper 3, a circulation pipe 4, an anaerobic unit 5, a driving mechanism 6, a return pipe 7, and a misaligned hole 8. The power device 2 is located above the flotation chamber 1. The scraper 3 is installed on the power device 2. The circulation pipe 4 is installed at the front end of the flotation chamber 1. The anaerobic unit 5 is installed on the other side of the circulation pipe 4. The driving mechanism 6 is installed above the anaerobic unit 5. The return pipe 7 is installed at the bottom rear of the flotation chamber 1. The misaligned hole 8 is installed at one end of the return pipe 7 away from the flotation chamber 1. The driving mechanism 6 adjusts the moving frequency of the misaligned hole 8 aligned with the return pipe 7 per unit time under the drive of the power device 2, and this moving frequency is proportional to the scraping speed of the scraper 3 for the floating foam. The amount of the returned liquid always remains within an appropriate range. Within a certain range, the increase in the amount of the returned liquid will not exceed the treatment load in the flotation chamber 1, nor will it affect the residence speed of the wastewater in the flotation chamber 1. Furthermore, it will not cause incomplete flotation separation due to the short residence speed of the wastewater.

[0034] During the purification of crop organic wastewater, after pre-treatment (such as screening, filtration, etc.), it then passes through this device for flotation to remove slag. In this process, the pre-treated wastewater is first discharged into the flotation chamber 1, and then the power device 2 is started. Under the action of the power device 2, normal flotation slag removal is achieved. Different from the prior art, the flotation slag removal in this application is carried out by the synchronous rotation of multiple scrapers 3, and thus the floating slag is circulated in the opposite direction of the water flow. During the scraping process of the scraper 3, the rotation speed of the scraper 3 will affect the floating slag removal effect. If the rotation speed is too high, the floating slag will be scattered, affecting the separation effect, while if the rotation speed is too low, the floating slag cannot be removed in time, thereby reducing the treatment efficiency. Moreover, the oil content in crop wastewater is relatively high, so the generation of floating slag will be higher than that in normal wastewater treatment. When the visual floating slag increases, at this time, the power device 2 can be used to drive the scraper 3 to rotate quickly, and simultaneously the driving mechanism 6 is used to drive the anaerobic unit 5 to move the sludge up and down, thereby accelerating the microbial metabolism, making the incompletely decomposed organic matter carried to the upper water body. On the one hand, the mixed liquid enters the front flotation chamber 1 and is then adsorbed and removed by the microbubbles in the flotation, thus reducing the burden on the subsequent oil treatment. On the other hand, the combination of the sludge and the sewage is enhanced, the contact between the organic matter and the microorganisms is improved, and thus the anaerobic reaction of the sewage is accelerated, thereby increasing the purification speed of the sewage;

[0035] While the sludge moves up and down in the anaerobic unit 5, the anaerobic unit 5 periodically adjusts the frequency of opening and closing of the reflux pipe 7 per unit time. When the rotation speed of the scraper 3 is slow, the number of times the reflux pipe 7 opens and closes per unit time is small, and thus the amount of reflux per unit time is also small, so that the microorganisms and organic matters are in full contact. When the scum increases in the air flotation chamber 1 due to a high oil content, increasing the reflux speed at this time can quickly transport the microorganisms and organic matters in the anaerobic reactor to the air flotation chamber 1, thereby enhancing the air flotation effect.

[0036] For the bottom of the air flotation chamber 1, by means of aeration, tiny bubbles are formed by releasing air. These bubbles adhere to the suspended substances, increasing their buoyancy and causing them to float to the water surface, further facilitating the separation of biological oil and low-concentration microorganisms in the wastewater. At the same time, aeration increases the dissolved oxygen in the water body, improves the water quality, promotes the growth of aerobic microorganisms, helps to degrade organic matters, is suitable for subsequent biological treatment. At the same time, aeration can also prevent the sewage sediment from depositing at the bottom of the air flotation chamber 1, thereby reducing the risk of blockage and facilitating the discharge of the sewage into the anaerobic unit 5.

[0037] As Figure 3 shown, the power device 2 includes a motor 21, a rotating shaft 22, a sprocket 23, and a chain 24. The motor 21 is installed above the air flotation chamber 1. The rotating shaft 22 is arranged parallel to the air flotation chamber 1 above the motor 21, and the end rotating shaft 22 is located at one end of the air flotation chamber 1. The sprocket 23 is installed on the output end on the same side of the rotating shaft 22 and the motor 21, and the chain 24 is installed on the sprocket 23.

[0038] By starting the motor 21, under the action of the motor 21, the motor 21 drives the sprocket 23 to rotate through the output shaft. The sprocket 23 on the output shaft of the motor 21 drives other sprockets 23 to rotate through the chain 24. When the other sprockets 23 rotate, they drive the rotating shaft 22 to rotate, and then drive the scraper 3 to rotate reciprocally, thereby realizing the scraping and blocking of the air flotation foam. In addition, multiple sprockets 23 drive the scrapers 3 at different positions to rotate. The front scraper 3 is used to block the floating foam from flowing into the anaerobic tank 51 along with the water flow, while the middle and rear scrapers 3 disturb the floating foam so that it can be evenly distributed on the surface, avoiding the accumulation of floating foam in a local area and causing a reduction in the purification efficiency.

[0039] As Figures 4-6As shown, the anaerobic unit 5 includes an anaerobic pond 51, an upper mud plate 52, and a lower mud plate 53. The anaerobic pond 51 is installed on the other side of the circulation pipe 4. The upper mud plate 52 and the lower mud plate 53 are respectively installed inside the anaerobic pond 51. Square gratings 521 are provided on the surface of the upper mud plate 52, and circular gratings 531 are provided on the surface of the lower mud plate 53. Support columns may be installed between the upper mud plate 52 and the lower mud plate 53. Elastic plates 55 are installed on the surfaces of both the upper mud plate 52 and the lower mud plate 53, and compression springs 56 are respectively installed between the elastic plates 55 and the upper mud plate 52 and the lower mud plate 53.

[0040] The anaerobic pond 51 is used for the microbial anaerobic reaction of wastewater. The upper mud plate 52 and the lower mud plate 53 are installed inside the anaerobic pond 51. The anaerobic pond 51 is slidably connected to the driving mechanism 6 (it is only necessary to keep the anaerobic pond 51 airtight from the outside. A cover body can be added at the driving mechanism 6 and the anaerobic pond 51 to keep the whole sealed). Under the action of the driving mechanism 6, the upper mud plate 52 and the lower mud plate 53 move synchronously, thereby driving the sludge above and below to mix with each other. On the one hand, it can avoid the accumulation of sludge at the bottom of the pond, reduce blockage and keep the sludge evenly distributed; on the other hand, the moving sludge helps the gases (such as methane and carbon dioxide) generated by anaerobic digestion to be released from the sludge, thereby optimizing the activity of the sludge and preventing the accumulation of gases from affecting the wastewater treatment effect.

[0041] The surface of the upper mud plate 52 is a square grating 521, while the surface of the lower mud plate 53 is a circular grating 531. Different gratings make the sludge not move along the previous trajectory when the upper mud plate 52 and the lower mud plate 53 move. As shown in the figure, elastic plates 55 are installed at the gratings. There is a gap between the elastic plates 55 and the gratings through which the sludge can pass. During the up and down movement, the elastic plates 55 will slide up and down under the influence of the compression springs 56, thereby improving the activity of the sludge.

[0042] As Figures 5-7 shown, the driving mechanism 6 includes a cam 61, a driving plate 62, and a return spring 63. The cam 61 is installed on the rotating shaft 22. The cam 61 is located above the anaerobic pond 51. The driving plate 62 is installed between the upper mud plate 52 and the lower mud plate 53. The return spring 63 is installed below the driving plate 62, and the other end of the return spring 63 is installed on the inner wall of the anaerobic pond 51.

[0043] Under the drive of the motor 21 to rotate the rotating shaft 22, the rotating shaft 22 will drive the cam 61 to rotate. The cam 61 intermittently drives the driving plate 62 to move up and down. Multiple cams 61 rotate synchronously, thereby ensuring the stability of the driving plate 62. When the driving plate 62 moves downward, it will squeeze the return spring 63, thereby driving the return spring 63 to be compressed. At the same time, it drives the upper sludge plate 52 and the lower sludge plate 53 to descend synchronously, thereby driving the sludge to descend. When the tip of the cam 61 does not contact the driving plate 62, at this time, the driving plate 62 is reset under the action of the return spring 63, thereby driving the driving plate 62 to move upward. The driving plate 62 drives the upper sludge plate 52 and the lower sludge plate 53 to move upward, thereby driving the sludge to move. The frequency of sludge movement per unit time is determined by the frequency of the rotating shaft 22 driving the cam 61. Therefore, when there is a lot of foam in the air flotation chamber 1, by accelerating the sludge movement, the gas generated by anaerobic consumption can be quickly released, thereby improving the activity of the sludge, and further improving the efficiency of wastewater purification; at the same time, the expansion frequency of the dislocation holes 8 per unit time increases, thereby increasing the amount of return liquid flowing into the air flotation chamber 1 from the anaerobic tank 51 through the return pipe 7, which can improve the pretreatment effect of the wastewater in the air flotation chamber 1, reduce the suspended solid concentration, maintain the microbial activity and enhance the organic matter removal effect. The support columns can support the upper sludge plate 52 and the lower sludge plate 53. On the one hand, it can make the two move synchronously. On the other hand, when the upper sludge plate 52 and the lower sludge plate 53 move, the sludge in the middle will not be compacted, thus avoiding the problem of sludge accumulation.

[0044] As Figure 5 shown, the elastic plate 55 is frustum-shaped, and the surface of the elastic plate 55 is provided with an arc-shaped groove 551. When the upper sludge plate 52 and the lower sludge plate 53 move up and down, on the one hand, the elastic plate 55 can spontaneously adjust the movement track of the sludge, so that the sludge will not move along the whole of the upper sludge plate 52 and the lower sludge plate 53, thereby adjusting the activity of the sludge in the anaerobic tank 51. On the other hand, a part of the sludge will stay in the arc-shaped groove 551, thus forming a uniform distribution; on the other hand, the elastic plate 55 will shake up and down when the upper sludge plate 52 and the lower sludge plate 53 move up and down, thereby changing the movement path of the sludge passing between the upper sludge plate 52 and the lower sludge plate 53, thus improving the activity of the sludge in the anaerobic tank 51.

[0045] As Figure 8 shown, an air diffuser pipe 9 is installed at the bottom of the air flotation chamber 1. The air diffuser pipe 9 is divided into a fixed section 91 and a free section 92. A spray head 921 is installed above the free section 92. The surface of the spray head 921 is provided with aeration ports 922 arranged in a circular array, and the aeration ports 922 are obliquely arranged.

[0046] By means of aeration, the air released inside forms tiny bubbles, which increases the buoyancy of low-concentration microorganisms such as internal grease, causing them to float to the water surface, further facilitating the separation of biological grease and low-concentration microorganisms in the wastewater. At the same time, aeration increases the dissolved oxygen in the water body, improves the water quality, promotes the growth of aerobic microorganisms, helps to degrade organic matter, is suitable for subsequent biological treatment. Meanwhile, aeration can also prevent sewage sediment from depositing at the bottom of the air flotation chamber 1, thereby reducing the risk of blockage and facilitating the discharge of sewage into the anaerobic unit 5.

[0047] By setting the fixed section 91 and the free section 92, the aeration end of the aeration pipe 9 can float up and down. When the water flow is normal, at this time, the free section 92 is always affected by the buoyancy of the water flow and floats upward. Therefore, the aeration of the aeration pipe 9 is directly facing upward, and it can aerate the sewage above. At the same time, the aeration port 922 is obliquely arranged. On the one hand, it can prevent vertical objects in the water from falling due to gravity and blocking, thereby improving the aeration efficiency. On the other hand, it can expand the aeration range, thereby improving the water purification efficiency of microorganisms in the air flotation chamber 1.

[0048] A one-way valve is installed at the reflux pipe 7. A pump body can be set at the reflux pipe 7 to ensure the smooth reflux of the liquid. A bifurcated joint 71 is installed at one end of the reflux pipe 7 located inside the air flotation chamber 1. After the liquid flows backward through the reflux pipe 7, the bifurcated joint 71 will transfer the reflux water to the aeration port 922. Under the action of the aeration pipe 9, the reflux water is dispersed, and then quickly mixes with the wastewater in the air flotation chamber 1, thereby improving the purification efficiency of microorganisms.

[0049] As Figure 9 shown, an airbag 31 is installed on the scraper 3, and the airbag 31 fits on both sides of the scraper 3. Based on the principle of double airbag 31 pressurization, when the force on one side is large, the gas transmission of the airbag 31 can make the surface level, so that the pressure on both sides of the scraper 3 is balanced when passing through the wastewater, and the uniformity of the scraping range can be ensured when scraping the floating foam. At the same time, it can apply pressure evenly across the full width, thereby improving the scraping effect of the scraper 3.

[0050] When it is necessary to purify crop wastewater, the staff introduces the wastewater into the air flotation chamber 1, and then starts the motor 21. The motor 21 drives the rotating shaft 22 to rotate through the sprocket 23 and the chain 24. At this time, multiple rotating shafts 22 rotate synchronously, thereby scraping the floating foam on the upper surface of the air flotation chamber 1. At the same time, when the rotating shaft 22 rotates, it drives the cam 61 to rotate, and the cam 61 drives the driving plate 62 to move up and down. The driving plate 62 can open and close the reflux pipe 7 through the misaligned hole 8 at this time, thereby controlling the liquid in the anaerobic chamber to flow back to the air flotation chamber 1. The moving speed of the driving plate 62 determines the frequency of opening and closing of the misaligned hole 8 per unit time, and thus determines the amount flowing into the air flotation chamber 1;

[0051] When there is less floating foam in the air flotation chamber 1, the rotation speed of the motor 21 is low at this time. As a result, less return liquid flows into the air flotation chamber 1 through the return pipe 7, thereby controlling the slow reaction of floating foam in the air flotation chamber 1. When the staff observes that the floating foam in the air flotation chamber 1 increases (a sensor can be set here to sense whether the concentration of the internal wastewater changes, and then the change signal is transmitted to the motor 21 through the sensor), at this time, the rotation speed of the motor 21 is increased by switching control. As a result, more return liquid flows into the air flotation chamber 1 through the return pipe 7, thereby reducing the concentration of suspended solids, reducing the contact between bubbles and suspended solids, thereby inhibiting the air flotation phenomenon, improving the air flotation separation efficiency at the same time, and then improving the purification efficiency of the wastewater. At the same time, when the return pipe 7 flows out, it will pass through the bifurcated joint 71. On the one hand, it drives the free section 92 of the aeration pipe 9 to move up and down, thereby improving the uniformity of aeration. On the other hand, the return liquid quickly diffuses under the action of the aeration pipe 9, thereby increasing the reaction speed of the return liquid in the air flotation chamber 1;

[0052] When the driving plate 62 moves up and down, it will drive the upper sludge plate 52 and the lower sludge plate 53 to move up and down, thereby causing the sludge in the anaerobic tank 51 to shake up and down. As a result, when the reaction in the air flotation chamber 1 accelerates, the anaerobic tank 51 can quickly react through the movement of the sludge, thereby increasing the reaction speed of microorganisms and the sewage purification speed.

[0053] The above shows and describes the basic principles and beneficial effects of the present invention. At the same time, the present invention is not limited by the above embodiments. Without departing from the effects and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An organic wastewater purification and treatment device, characterized in that: It includes an air flotation chamber (1), a power device (2), a scraper (3), a circulation pipe (4), an anaerobic unit (5), a drive mechanism (6), a return pipe (7), and a misaligned hole (8). The power device (2) is located above the air flotation chamber (1). The scraper (3) is installed on the power device (2). The circulation pipe (4) is installed at the front end of the air flotation chamber (1). The anaerobic unit (5) is installed on the other side of the circulation pipe (4). The drive mechanism (6) is installed above the anaerobic unit (5). The return pipe (7) is installed at the bottom rear of the air flotation chamber (1). The misaligned hole (8) is opened on the drive mechanism (6) and corresponds to the return pipe (7). The power device (2) adjusts the scraping speed of the scraper (3) for the floating foam. The drive mechanism (6) adjusts the moving frequency of the misaligned hole (8) aligned with the return pipe (7) per unit time under the drive of the power device (2), and this moving frequency is proportional to the scraping speed of the scraper (3) for the floating foam; The anaerobic unit (5) includes an anaerobic pond (51), an upper mud plate (52), and a lower mud plate (53). The anaerobic pond (51) is installed on the other side of the circulation pipe (4). The upper mud plate (52) and the lower mud plate (53) are respectively installed in the anaerobic pond (51). Square grids (521) are opened on the surface of the upper mud plate (52). Circular grids (531) are opened on the surface of the lower mud plate (53); The drive mechanism (6) includes a cam (61), a drive plate (62), and a return spring (63). The cam (61) is installed on a rotating shaft (22). The cam (61) is located above the anaerobic pond (51). The drive plate (62) is installed between the upper mud plate (52) and the lower mud plate (53). The return spring (63) is installed below the drive plate (62). The other end of the return spring (63) is installed on the inner wall of the anaerobic pond (51); Elastic plates (55) are installed on the surfaces of both the upper mud plate (52) and the lower mud plate (53). Compression springs (56) are installed between the elastic plates (55) and the upper mud plate (52), and the lower mud plate (53) respectively; An air diffuser pipe (9) is installed at the bottom of the air flotation chamber (1). The air diffuser pipe (9) is divided into a fixed section (91) and a free section (92); A spray head (921) is installed above the free section (92). Annularly arrayed aeration openings (922) are opened on the surface of the spray head (921). The aeration openings (922) are obliquely arranged; A check valve is installed at the return pipe (7). A bifurcated joint (71) is installed at one end of the return pipe (7) located inside the air flotation chamber (1).

2. An organic wastewater purification treatment device according to claim 1, characterized in that: The power device (2) includes a motor (21), a rotating shaft (22), a sprocket (23), and a chain (24). The motor (21) is installed above the air-floating chamber (1). The rotating shaft (22) is arranged in parallel above the motor (21) and the air-floating chamber (1), and the end of the rotating shaft (22) is located at one end of the air-floating chamber (1). The sprocket (23) is installed at the output end on the same side of the rotating shaft (22) and the motor (21). The chain (24) is installed on the sprocket (23).

3. An organic wastewater purification treatment device according to claim 1, characterized in that: The elastic plate (55) is frustum-shaped, and an arc-shaped groove (551) is provided on the surface of the elastic plate (55).

4. An organic wastewater purification and treatment device according to claim 1, characterized in that: An airbag (31) is installed on the scraper (3), and the airbag (31) fits on both sides of the scraper (3).

Images