Organic wastewater purification treatment device

Abstract

The invention relates to the technical field of organic wastewater treatment, in particular to an organic wastewater purification treatment device which comprises an air flotation chamber, a power device, a scraper blade, a runner 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 blade is installed on the power device, and the runner pipe is installed on the power device. The circulating pipe is mounted at the front end of the air floatation chamber, the anaerobic unit is mounted on the other side of the circulating pipe, the driving mechanism is mounted above the anaerobic unit, the return pipe is mounted at the bottom of the rear part of the air floatation chamber, and the dislocation hole is formed in the driving mechanism. Therefore, the purification efficiency of wastewater under different components is adjusted, the up-down movement of sludge in the anaerobic tank is controlled by utilizing the change of the air floatation speed, and meanwhile, the wastewater purification efficiency of reflux liquid refluxed into the air floatation unit is improved by utilizing the up-down movement of the sludge.

Description

Technical Field

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

[0002] Organic wastewater purification treatment equipment is a kind of equipment specially used to treat wastewater containing a large amount of organic pollutants. Organic wastewater purification treatment equipment uses the life activities of microorganisms to degrade organic pollutants in the wastewater in dissolved or colloidal state, thereby purifying the wastewater and converting these organic substances into harmless substances, so that the wastewater meets the discharge standards or water quality requirements for reuse.

[0003] During the growth of crops, root secretions, fallen leaves, dead branches and other organic matter are produced. These organic matter are brought into the water body during the flushing and irrigation of rainwater, forming organic wastewater. At the same time, the residues of pesticides and fertilizers discharged from farmland will also be mixed in the organic wastewater. This wastewater is different from conventional organic wastewater. It contains both high-concentration organic matter (plant residues) and low-concentration organic matter (pesticide residues). Compared with normal single-concentration organic matter, it is difficult for traditional treatment processes to completely treat this part of organic matter. For example, flotation and oxidation-reduction methods can quickly treat low-concentration, difficult-to-degrade substances, but it is difficult to treat high-concentration, poorly biodegradable wastewater. Although anaerobic and aerobic treatment methods can remove nitrogen and phosphorus, they are difficult to treat for difficult-to-degrade substances. Degradable substances make it difficult to purify wastewater. Therefore, in the prior art, a three-stage treatment method of flotation-anaerobic-aerobic is selected according to the characteristics of the wastewater to improve the wastewater treatment efficiency. However, due to excessive protein and colloid substances in agricultural wastewater (such as livestock and poultry manure wastewater, etc.), after the ratio of water and flocculants is normally adjusted, the excessive protein and colloid in the wastewater (such as sticky organic matter in livestock and poultry manure) will form a stable colloidal system, which will wrap the flocculant molecules and reduce the effective contact area between the flocculant and the target pollutant, making it difficult for the flocculant to achieve the expected effect; at the same time, high concentrations of colloidal substances will inhibit the formation speed of flocs, resulting in small and loose flocs with poor sedimentation performance, and even a cycle of "floc breakage and repeated flocculation" will occur, affecting the stability of the treatment system;

[0004] Based on this, in order to solve the problem of slow floc formation due to excessive colloids in agricultural wastewater during the purification of crop wastewater, thereby resulting in low wastewater purification efficiency, the present invention designs an organic wastewater purification treatment device. Summary of the invention

[0005] The present invention provides an organic wastewater purification treatment device, which solves the problem that when purifying crop wastewater, the flocs are formed slowly due to excessive colloid substances in agricultural wastewater, thereby making the wastewater purification efficiency low. The removal speed of the scraper for scum is controlled to adjust the purification efficiency of wastewater with different components, and the up and down movement of sludge in the anaerobic tank is controlled by changing the flotation speed. At the same time, the up and down movement of sludge is used to improve the wastewater purification efficiency of the reflux liquid returned to the flotation unit.

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

[0007] The present invention provides an organic wastewater purification treatment device, comprising an air flotation chamber, a power device, a scraper, a flow 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 flow pipe is installed at the front end of the air flotation chamber, the anaerobic unit is installed on the other side of the flow pipe, the driving mechanism is installed above the anaerobic unit, the return pipe is installed at the rear bottom of the air flotation chamber, the dislocation hole is arranged on the driving mechanism, and the driving mechanism adjusts the displacement of the dislocation hole to align with the return pipe per unit time under the drive of the power device. The frequency of movement is proportional to the scraping speed of the scraper on the foam. The scraper is driven to rotate rapidly by the power device, and the anaerobic unit is driven by the driving mechanism to move the sludge up and down, thereby accelerating the metabolism of microorganisms. The incompletely decomposed organic matter is carried to the upper water body. On the one hand, it enters the front flotation chamber through the mixed liquid, and is then adsorbed and removed by the microbubbles in the flotation, thereby reducing the burden of subsequent grease treatment. On the other hand, it enhances the combination of sludge and sewage, improves the contact between organic matter and microorganisms, and accelerates the anaerobic reaction of sewage, thereby improving the purification speed of sewage.

[0008] Preferably, the power device includes a motor, a rotating shaft, a sprocket, and a chain. The motor is installed above the flotation chamber. The rotating shaft is arranged parallel to the motor flotation chamber, and the end of the rotating shaft is located at one end of the flotation chamber. The sprocket is installed at the output end on the same side of the rotating shaft and the motor. The chain is installed on the sprocket. The scraper at the front end is used to prevent the foam from entering the anaerobic tank along the water flow, while the scrapers at the middle and rear end disturb the foam so that it can be evenly distributed on the surface, avoiding the accumulation of foam in a local area, which reduces 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, the surface of the upper mud plate is provided with a square grid, the surface of the lower mud plate is provided with a circular grid, and a support column is 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 and reduce blockage while maintaining uniform sludge distribution; on the other hand, the moving sludge helps to release the gas generated by anaerobic digestion from the sludge, thereby optimizing the activity of the sludge and preventing gas accumulation from affecting the treatment effect of wastewater.

[0010] Preferably, the driving mechanism includes a cam, a driving plate, and a return spring, the cam is installed on a rotating shaft, the cam is located above the anaerobic tank, the driving plate is installed between an upper mud plate and a 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 floating foam in the flotation chamber, the sludge movement is accelerated, thereby increasing the rapid release of gas generated by anaerobic consumption, thereby increasing the activity of the sludge, and thereby improving the efficiency of wastewater purification; at the same time, the expansion frequency of the dislocation holes per unit time is increased, thereby increasing the reflux liquid flowing into the flotation chamber through the reflux pipe in the anaerobic tank, reducing the concentration of suspended matter, and being able to improve the pretreatment effect of the wastewater in the flotation chamber, while maintaining the activity of microorganisms and enhancing the removal effect of organic matter.

[0011] Preferably, elastic plates are installed on the surfaces of the upper mud plate and the lower mud plate, and compression springs are installed between the elastic plate and the upper mud plate and the lower mud plate respectively. There is a gap between the elastic plate and the grid through which 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 in a prism shape, and an arc-shaped groove is installed on the surface of the elastic plate, and a part of the sludge will stay in the arc-shaped groove, thereby forming a uniform distribution.

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

[0014] Preferably, a nozzle is installed above the free section, and aeration ports in a circular array are provided on the surface of the nozzle. The aeration ports are arranged obliquely, which, on the one hand, prevents vertical objects in the water from falling and being blocked by gravity, thereby improving the efficiency of aeration, and on the other hand, can expand the range of aeration, thereby improving the water purification efficiency of microorganisms in the flotation chamber.

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

[0016] Preferably, airbags are installed on the scraper, and the airbags are attached to both sides of the scraper. Through the principle of double airbag pressurization, the pressure on both sides of the scraper is balanced when passing through the wastewater, thereby ensuring the uniformity of the scraping range when scraping the foam.

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

[0018] 1. The present invention proposes an organic wastewater purification treatment device, which uses a plurality of scrapers to rotate synchronously to circulate the scum in the opposite direction of the water flow. During the scraping process, the rotation speed of the scraper will affect the scum removal effect. When the visible scum increases, the scraper is driven to rotate rapidly by a power device, and the anaerobic unit is driven by a driving mechanism to move the sludge up and down, thereby accelerating the metabolism of microorganisms, so that the incompletely decomposed organic matter is carried to the upper water body, and on the one hand, it enters the front flotation chamber through the mixed liquid, and then is adsorbed and removed by the microbubbles in the flotation, thereby reducing the burden of subsequent grease treatment, and on the other hand, it enhances the combination of sludge and sewage, improves the contact between organic matter and microorganisms, and accelerates the anaerobic reaction of sewage, thereby improving the purification speed of sewage.

[0019] 2. The present invention proposes an organic wastewater purification treatment device. While the anaerobic unit moves the sludge up and down, the anaerobic unit will periodically adjust the frequency of opening and closing of the return pipe per unit time. When the scraper rotates slowly, the number of times the return pipe is opened and closed per unit time is small, and the amount of reflux per unit time is also small, so that the microorganisms and organic matter are fully in contact. When the scum increases in the flotation chamber due to the high oil content, the microorganisms and organic matter in the anaerobic reactor can be quickly transported to the flotation chamber by increasing the reflux speed, thereby enhancing the flotation effect.

[0020] 3. The organic wastewater purification treatment device proposed in the present invention utilizes aeration to form tiny bubbles by releasing air. These bubbles attach to suspended matter to increase its buoyancy, causing it to float to the water surface, further facilitating the separation of biological oils and low-concentration microorganisms in the wastewater; aeration increases the dissolved oxygen in the water body, which helps to degrade organic matter and is suitable for subsequent biological treatment. At the same time, aeration can also prevent sewage from settling at the bottom of the flotation chamber, thereby reducing the risk of blockage, facilitating the discharge of sewage into the anaerobic unit, and can diffuse the refluxed liquid in the reflux pipe to the surroundings, so that the refluxed liquid can quickly improve the flotation separation efficiency in the flotation chamber, thereby increasing the sewage purification speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation mode of the present invention or the technical solution in the prior art, the drawings required for use in the specific implementation mode or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are one implementation mode of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

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

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

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

[0027] Figure 6 yes Figure 5 The enlarged view of point A in the middle;

[0028] Figure 7 This is a cross-sectional view of the anaerobic tank from another direction;

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

[0030] Fig. 9 It is a schematic diagram of the transfer 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, air bag; 4, circulation pipe; 5, anaerobic unit; 51, anaerobic tank; 52, upper mud plate; 521, square grille; 53, lower mud plate; 531, circular grille; 55, elastic plate; 551, arc groove; 56, compression spring; 6, driving mechanism; 61, cam; 62, driving plate; 63, reset spring; 7, return pipe; 71, forked joint; 8, offset hole; 9, aeration pipe; 91, fixed section; 92, free section; 921, nozzle; 922, aeration port. DETAILED DESCRIPTION

[0032] In order to better understand the above solution, the above technical solution is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] like Figure 1-2 As shown, an organic wastewater purification treatment device includes an air flotation chamber 1, a power device 2, a scraper 3, a flow pipe 4, an anaerobic unit 5, a driving mechanism 6, a return pipe 7, and an offset 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 flow 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 flow pipe 4, the driving mechanism 6 is installed above the anaerobic unit 5, the return pipe 7 is installed at the rear bottom of the air flotation chamber 1, and the offset hole 8 is installed at the end of the return pipe 7 away from the air flotation chamber 1. The driving mechanism 6 adjusts the movement frequency of the offset hole 8 to align with the return pipe 7 per unit time under the drive of the power device 2, and the movement frequency is proportional to the scraping speed of the scraper 3 on the floating foam. The amount of reflux liquid reflux is always within an appropriate range. Within a certain range, the increase in the amount of reflux liquid will not exceed the processing load in the flotation chamber 1, nor will it affect the residence speed of the wastewater in the flotation chamber 1, thereby preventing incomplete flotation separation due to a short wastewater residence speed.

[0034] In the process of purifying crop organic wastewater, after pre-treatment (such as screening, filtration, etc.), it passes through this device for flotation slag removal. In this process, the pre-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. Compared with the prior art, the flotation slag removal of the present application is achieved by synchronously rotating multiple scrapers 3, thereby circulating the slag 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 slag removal effect. If the rotation speed is too high, the slag will be broken up, affecting the separation effect, while if the rotation speed is too low, the slag cannot be removed in time, thereby reducing the treatment efficiency. The crop wastewater has a high oil content, so the generation of scum will be higher than that of normal wastewater treatment. When the visible scum becomes more, the power device 2 can be used to drive the scraper 3 to rotate quickly, and the driving mechanism 6 can be used to drive the anaerobic unit 5 to move the sludge up and down, thereby accelerating the metabolism of microorganisms, so that the incompletely decomposed organic matter is carried to the upper water body, on the one hand, it enters the front flotation chamber 1 through the mixed liquid, and then is adsorbed and removed by the microbubbles in the flotation, thereby reducing the burden of subsequent oil treatment, and on the other hand, it enhances the combination of sludge and sewage, improves the contact between organic matter and microorganisms, and accelerates the anaerobic reaction of sewage, thereby improving the purification speed of sewage;

[0035] While the anaerobic unit 5 moves the sludge up and down, the anaerobic unit 5 will periodically adjust the frequency of opening and closing of the return pipe 7 per unit time. When the scraper 3 rotates slowly, the number of times the return pipe 7 is opened and closed per unit time is small, and the amount of reflux per unit time is also small, so that the microorganisms and organic matter are fully in contact; and when the scum increases due to the high oil content in the flotation chamber 1, the microorganisms and organic matter in the anaerobic reactor can be quickly transported to the flotation chamber 1 by increasing the reflux speed, thereby enhancing the flotation effect.

[0036] At the bottom of the flotation chamber 1, aeration is used to form tiny bubbles by releasing air. These bubbles attach to the suspended matter, increasing its buoyancy and causing it to float to the water surface, further facilitating the separation of biological oils and low-concentration microorganisms in the wastewater. At the same time, aeration increases the dissolved oxygen in the water body, improves water quality, promotes the growth of aerobic microorganisms, helps degrade organic matter, and is suitable for subsequent biological treatment. At the same time, aeration can also prevent sewage from settling at the bottom of the flotation chamber 1, thereby reducing the risk of blockage and facilitating the discharge of sewage into the anaerobic unit 5.

[0037] like Figure 3 As 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 at 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, and the sprocket 23 on the output shaft of the motor 21 drives other sprockets 23 to rotate through the chain 24. When other sprockets 23 rotate, they drive the rotating shaft 22 to rotate, and then drive the scraper 3 to rotate back and forth, so as to achieve the scraping and blocking of the floating foam. In addition, multiple sprockets 23 drive the scrapers 3 at different positions to rotate. The scraper 3 at the front end is used to prevent the floating foam from entering the anaerobic tank 51 along the water flow, while the scrapers 3 at the middle and rear end disturb the floating foam so that it can be evenly distributed on the surface, so as to avoid the accumulation of floating foam in a local area, resulting in a decrease in purification efficiency.

[0039] like Figure 4-6As shown in the figure, the anaerobic unit 5 includes an anaerobic tank 51, an upper mud plate 52, and a lower mud plate 53. The anaerobic tank 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 tank 51. A square grid 521 is provided on the surface of the upper mud plate 52, and a circular grid 531 is 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 tank 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 tank 51. The anaerobic tank 51 is slidably connected to the driving mechanism 6 (it is only necessary to keep the anaerobic tank 51 airtight from the outside. A cover body can be added at the driving mechanism 6 and the anaerobic tank 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 tank, 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 gas accumulation from affecting the wastewater treatment effect.

[0041] The surface of the upper mud plate 52 is a square grid 521, while the surface of the lower mud plate 53 is a circular grid 531. Different grids make the sludge not move along the previous track 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 grids. There is a gap between the elastic plates 55 and the grids 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 Figure 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 tank 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 tank 51.

[0043] When the motor 21 drives the shaft 22 to rotate, the shaft 22 will drive the cam 61 to rotate, and the cam 61 intermittently drives the driving plate 62 to move up and down, and multiple cams 61 rotate synchronously, thereby ensuring the stability of the driving plate 62. The driving plate 62 moves downward to squeeze the return spring 63, thereby driving the return spring 63 to be compressed, and at the same time drives the upper mud plate 52 and the lower mud plate 53 to descend synchronously, thereby driving the sludge to descend. When the tip of the cam 61 is no longer in contact with the driving plate 62, the driving plate 62 is reset again by the return spring 63, thereby driving the driving plate 62 to move upward, and the driving plate 62 drives the upper mud plate 52 and the lower mud plate 53 upward The sludge moves, and then drives 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. When there is a lot of foam in the flotation chamber 1, the sludge movement is accelerated, and the gas generated by anaerobic consumption is quickly released, thereby increasing the activity of the sludge and the efficiency of wastewater purification. At the same time, the frequency of the expansion of the dislocation hole 8 per unit time increases, thereby increasing the amount of reflux liquid flowing into the flotation chamber 1 through the reflux pipe 7 in the anaerobic tank 51, which can improve the pretreatment effect of the wastewater in the flotation chamber 1, reduce the concentration of suspended matter, maintain the activity of microorganisms and enhance the removal effect of organic matter. The support column can support the upper mud plate 52 and the lower mud plate 53. On the one hand, it can make the two move synchronously, and on the other hand, it can make the sludge in the middle not be compacted when the upper mud plate 52 and the lower mud plate 53 move, thereby avoiding the problem of sludge accumulation.

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

[0045] like Figure 8 As shown, an aeration pipe 9 is installed at the bottom of the air flotation chamber 1, and the aeration pipe 9 is divided into a fixed section 91 and a free section 92. A nozzle 921 is installed above the free section 92, and a ring array of aeration ports 922 are opened on the surface of the nozzle 921, and the aeration ports 922 are arranged obliquely.

[0046] Through aeration, the air released inside forms tiny bubbles, which increase the buoyancy of low-concentration microorganisms such as internal oils and fats, causing them to float to the water surface, further facilitating the separation of biological oils and low-concentration microorganisms in the wastewater. At the same time, aeration increases the dissolved oxygen in the water body, improves water quality, promotes the growth of aerobic microorganisms, helps degrade organic matter, and is suitable for subsequent biological treatment. At the same time, aeration can also prevent sewage from settling at the bottom of the 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, the free section 92 is always affected by the buoyancy of the water flow and floats upward, so that the aeration of the aeration pipe 9 is facing upward, and the sewage above can be aerated. At the same time, the aeration port 922 is set obliquely, on the one hand, to prevent vertical objects in the water from falling and being blocked by gravity, thereby improving the efficiency of aeration, and on the other hand, to expand the range of aeration, thereby improving the water purification efficiency of the microorganisms in the flotation chamber 1.

[0048] A one-way valve is installed at the reflux pipe 7, and a pump body can be provided at the reflux pipe 7 to ensure that the liquid can reflux smoothly. A forked joint 71 is installed at one end of the reflux pipe 7 located in the flotation chamber 1. After the liquid flows back through the reflux pipe 7, the forked 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 merged with the wastewater in the flotation chamber 1, thereby improving the purification efficiency of microorganisms.

[0049] like Fig. 9 As shown, the scraper 3 is installed with airbags 31, and the airbags 31 are attached to both sides of the scraper 3; through the principle of double airbags 31 pressurization, when the force on one side is large, the gas transmission of the airbags 31 can keep 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 guaranteed when scraping the foam, and at the same time, the pressure can be evenly applied across the entire width, thereby improving the scraping effect of the scraper 3.

[0050] When it is necessary to purify the crop wastewater, the staff introduces the wastewater into the flotation chamber 1, and then starts the motor 21. The motor 21 drives the shaft 22 to rotate through the sprocket 23 and the chain 24. At this time, multiple shafts 22 rotate synchronously, thereby scraping the foam on the upper surface of the flotation chamber 1; at the same time, the rotation of the shaft 22 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 offset hole 8 at this time, thereby controlling the liquid in the anaerobic chamber to flow back to the flotation chamber 1. The moving speed of the driving plate 62 determines the frequency of opening and closing the offset hole 8 per unit time, thereby determining the amount of liquid flowing into the 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 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 improving 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 treatment device, characterized in that: The invention comprises an air 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 dislocation hole (8), wherein 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), and the driving mechanism (6) is installed at the anaerobic The unit (5) is arranged above the return pipe (7) at the bottom of the rear of the air flotation chamber (1); the offset hole (8) is arranged on the driving mechanism (6) and corresponds to the return pipe (7); the power device (2) adjusts the scraping speed of the scraper (3) on the floating foam; the driving mechanism (6) adjusts the movement frequency of the offset hole (8) to align with the return pipe (7) per unit time under the drive of the power device (2), and the movement frequency is proportional to the scraping speed of the scraper (3) on the floating foam.

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

3. The organic wastewater purification treatment device according to claim 1, characterized in that: The anaerobic unit (5) comprises an anaerobic tank (51), an upper mud plate (52) and a lower mud plate (53). The anaerobic tank (51) is installed on the other side of the circulation pipe (4). The upper mud plate (52) and the lower mud plate (53) are installed in the anaerobic tank (51) respectively. A square grille (521) is provided on the surface of the upper mud plate (52), and a circular grille (531) is provided on the surface of the lower mud plate (53).

4. The organic wastewater purification treatment device according to claim 3 is characterized in that: The driving mechanism (6) comprises a cam (61), a driving plate (62), and a return spring (63); the cam (61) is mounted on a rotating shaft (22); the cam (61) is located above the anaerobic tank (51); the driving plate (62) is mounted between an upper mud plate (52) and a lower mud plate (53); the return spring (63) is mounted below the driving plate (62); and the other end of the return spring (63) is mounted on the inner wall of the anaerobic tank (51).

5. The organic wastewater purification treatment device according to claim 4 is characterized in that: The upper mud plate (52) and the lower mud plate (53) are both provided with elastic plates (55) on their surfaces, and compression springs (56) are respectively provided between the elastic plate (55) and the upper mud plate (52) and the lower mud plate (53).

6. The organic wastewater purification treatment device according to claim 5, characterized in that: The elastic plate (55) is in the shape of a prism, and an arc-shaped groove (551) is provided on the surface of the elastic plate (55).

7. The organic wastewater purification treatment device according to claim 2, characterized in that: An aeration pipe (9) is installed at the bottom of the air flotation chamber (1), and the aeration pipe (9) is divided into a fixed section (91) and a free section (92).

8. The organic wastewater purification treatment device according to claim 7, characterized in that: A nozzle (921) is installed above the free section (92), and a ring-shaped array of aeration ports (922) are provided on the surface of the nozzle (921), and the aeration ports (922) are arranged obliquely.

9. The organic wastewater purification treatment device according to claim 7, characterized in that: A one-way valve is installed at the reflux pipe (7), and a forked joint (71) is installed at one end of the reflux pipe (7) located in the air flotation chamber (1).

10. The organic wastewater purification treatment device according to claim 1, characterized in that: An air bag (31) is installed on the scraper (3), and the air bag (31) is attached to both sides of the scraper (3).

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