A livestock and poultry breeding wastewater treatment device

Abstract

The present invention belongs to the technical field of wastewater treatment devices, specifically a livestock and poultry breeding wastewater treatment device, including a treatment tank, a plurality of slide rails are set up in the treatment tank, each slide rail is provided with an air intake guide mechanism, each air intake guide mechanism is provided with a floating aeration mechanism that can move up and down, and the floating aeration mechanism moves in a wave line along the direction of the slide rail. The present invention realizes an aeration mode of reciprocating movement of a wave line, and performs double-layer vortex stirring to continuously change the aeration point, avoid local overoxygen or hypoxia, ensure the activity of aerobic microorganisms, and promote efficient metabolism of the bacterial community. The bottom and top vortices push the deposited sludge and drive the surface water circulation respectively, prevent the sludge from depositing and clumping, maintain its uniform suspension, and the shear force can balance the sludge activity and sedimentation. The change of the aeration point can prevent impurity blockage. The small and large bubbles formed by the water pressure due to aeration at different depths can effectively degrade the bottom macromolecular organic matter and quickly remove the surface organic matter.

Description

Technical Field

[0001] The present invention belongs to the technical field of wastewater treatment devices, and in particular relates to a livestock and poultry breeding wastewater treatment device. Background Art

[0002] Livestock and poultry wastewater treatment equipment is equipment or systems that purify wastewater generated by livestock farms (such as fecal wastewater and flushing wastewater). Its purpose is to remove pollutants such as organic matter, nitrogen, phosphorus, suspended solids, and pathogenic microorganisms from the wastewater, ensuring that the treated water meets discharge standards or reuse requirements, thereby reducing environmental pollution. The treatment process primarily includes pretreatment, anaerobic treatment, aerobic treatment, coagulation / sedimentation / flotation, and sludge treatment. The aerobic treatment stage primarily involves aeration pipes to provide an appropriate amount of oxygen to the aerobic tank, allowing aerobic microorganisms to decompose remaining organic matter and remove nutrients such as nitrogen and phosphorus.

[0003] The aerobic treatment stage in existing livestock and poultry breeding wastewater treatment devices mainly uses an air compressor to compress the air and then transport it to the aeration pipes at the bottom of the aerobic tank through the gas pipeline. The aeration pipes can be distributed in a lattice to increase the oxygen diffusion area, which is conducive to sufficient mixing with the water and activated sludge in the tank, meeting the aerobic microorganisms' demand for dissolved oxygen, ensuring effective contact between microorganisms and pollutants in the sewage, and realizing the degradation of pollutants.

[0004] After searching, the patent with application number 2024116763124 discloses an aeration biological treatment device for livestock and poultry breeding wastewater. Through the impeller blades, after the gas is discharged into the wastewater, it surges upward, driving the impeller to rotate, so that the upward-surging bubbles are broken up into smaller bubbles by the rotating impeller, increasing the contact area between the gas and the wastewater, thereby improving the aeration treatment effect.

[0005] Both of the above methods use a fixed-point aeration within the tank (i.e., the aeration point location remains unchanged). This aeration method is limited by the diffusion range, and "dead zones" with low dissolved oxygen are easily formed in the areas between the aeration points. Especially when the tank area is large or the shape is complex, the edges or corners may be prone to oxygen deficiency, resulting in reduced microbial activity, affecting the degradation of pollutants. The impact is more obvious at different depths of the tank. In addition, the range of water disturbance is limited, and the stirring intensity in areas far from the aeration point is insufficient. The activated sludge is prone to sedimentation and compaction at the bottom of the tank, which not only affects the contact between microorganisms and pollutants, but also requires regular shutdown and cleaning, increasing operation and maintenance costs. At the same time, the fixed-point design makes the aeration tubes themselves immobile, which makes it easy for sludge impurities to accumulate on the aeration tube surface and block the aeration holes, resulting in increased air outflow resistance and reduced oxygen transfer efficiency. The abnormal pressure and localized stress concentration caused by the blockage can also cause the diaphragm on the microporous aeration tube to rupture, increasing equipment replacement costs. Summary of the Invention

[0006] The purpose of the present invention is to provide a livestock and poultry breeding wastewater treatment device to solve the problems raised in the above background technology.

[0007] The technical solution adopted in the present invention is:

[0008] A livestock and poultry breeding wastewater treatment device includes a treatment pool, wherein a plurality of slide rails are set up in the treatment pool, each of the slide rails is provided with an air intake guide mechanism, and the air intake guide mechanism and the slide rail are slidably connected. It is characterized in that each of the air intake guide mechanisms is provided with a floating aeration mechanism that can move up and down, and the floating aeration mechanism moves in a wave line along the direction of the slide rail. The floating aeration mechanism includes a cylinder with openings at both ends, and a first impeller, a first aeration element and a second aeration element are provided in the cylinder, and the lower end of the first aeration element and the upper end of the second aeration element are connected to the two end interfaces of the first impeller, and the first impeller drives the two aeration elements to rotate synchronously to perform double-layer vortex aeration.

[0009] Preferably, the first aeration member and the second aeration member have the same structure, the size of the first aeration member is larger than that of the second aeration member, the two aeration members are symmetrically distributed around the first impeller, and both aeration members include a rotating tube and a plurality of blades, the blades are arranged around the end of the rotating tube at equal intervals, and an air inlet is provided at the end of the rotating tube away from the blade, and an aeration port is provided on each of the blades, and the aeration port and the air inlet are connected.

[0010] Preferably, the air inlets on the first aeration element and the second aeration element are respectively provided with a first air inlet sleeve and a second air inlet sleeve, and the air inlet sleeves are sleeved on the air inlets so that the aeration elements can intermittently intake air during rotation.

[0011] Preferably, a first plug and a second plug are respectively provided on the lower side of the first air inlet sleeve and the upper side of the second air inlet sleeve. The first plug is provided on the outer wall of the rotating tube of the first aerator, and the second plug is provided on the outer wall of the rotating tube of the second aerator.

[0012] Preferably, an air inlet joint is provided on one side of the outer wall of the cylinder, and the air inlet joint faces the side of the first impeller that is not the central axis.

[0013] Preferably, the air intake guide mechanism includes a dual-cavity shell, a cover body and an air intake end cover. The dual-cavity shell and the cover body are detachably connected. Two guide holes are provided on one side of the outer wall of the dual-cavity shell. Each guide hole is connected to an inner cavity of the corresponding dual-cavity shell. An adjusting disk is rotatably connected to the opening between the two guide holes. An arc-shaped opening is provided on the adjusting disk. The adjusting disk controls the air intake of the guide holes. The air intake end cover is covered on the adjusting disk and is connected to the thread on the dual-cavity shell.

[0014] Preferably, the rotating shaft at the center of the adjusting disk passes through the air inlet end cover, and a gear is provided on the portion of the adjusting disk through which the rotating shaft passes, the gear is meshed with a rack, and the rack is installed at the side edges of both ends of the slide rail through a bracket.

[0015] Preferably, a second impeller is provided in each of the two inner chambers of the double-chamber housing, and the guide hole faces the non-central axis side of the second impeller. A connecting shaft is provided at one end of each of the second impellers, and the connecting shaft passes through one side of the outer wall of the double-chamber housing. A spiral blade is provided at the end of each of the connecting shafts away from the second impeller, and a roller is provided at the bottom recess position of the double-chamber housing, and the roller is located on the slide rail.

[0016] Preferably, limit strips are provided on both sides of the outer wall of the double-cavity shell, and the limit strips are slidably connected to the limit openings, and the limit openings are provided on both sides of the inner wall of the slide rail. A connecting plate is also provided on one side of the outer wall of the double-cavity shell, and the through hole on the connecting plate and the cylinder are slidably connected, and limit blocks for limiting the up and down movement range of the cylinder are provided in the recesses on both sides of the outer wall of the cylinder.

[0017] Preferably, a three-way joint is provided on the cover body, a hose is provided on the three-way joint, and one end of the hose away from the three-way joint is connected to the air inlet joint.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) Aeration stage: The present invention realizes the use of high-pressure airflow to push the entire device to move back and forth linearly on the slide rail by arranging a double-cavity shell, a guide hole, a connecting plate, a cover, a three-way joint, a hose, an adjusting disk, an air inlet end cover, a second impeller, a connecting shaft, a spiral blade, a gear and a roller, without the need for an additional drive unit, and the overall structure is relatively simple; and through the further coordination of the cylinder, the first impeller, the first aeration element, the first plug, the second plug, the first air inlet sleeve, the second aeration element and the second air inlet sleeve, the aeration port can float up and down while rotating itself during the aeration process, and the overall movement mode of the aeration port is a wave line in the treatment tank, so as to achieve dynamic aeration. The mode replaces the static fixed-point aeration of the transmission, reducing the layout and opening preparation of the fixed-point aeration in the early stage of the pool. The continuous change of the aeration point avoids the problem of impurities accumulating and compacting on the aeration structure and causing blockage of the aeration holes, improving the oxygen transfer efficiency, reducing the pressure abnormality and local stress concentration caused by the blockage of the aeration port, which causes the diaphragm on the aeration port to rupture and increase the equipment replacement cost, and avoiding the problem of "dead zone" with low dissolved oxygen formed between the fixed aeration points, which causes the microbial activity to decrease due to insufficient oxygen, thereby affecting the degradation of pollutants, and improving the aeration coverage rate, especially in the longitudinal gradient of the water pool, ensuring the oxygen content of water layers at different depths.

[0020] (2) Aeration stage: The present invention sets a cylinder, a first impeller, a first aeration element, a first plug, a second plug, a first air inlet sleeve, a second aeration element, a second air inlet sleeve, a rotating tube, blades, an air inlet and an aeration port, so that during the aeration process, the first impeller drives the second aeration element and the first aeration element to rotate synchronously, and can simultaneously form vortex stirring in the middle and lower layer or the middle and upper layer, thereby increasing the radial shear force. Under the premise of constantly changing the position of the aeration point, the diffusion efficiency and coverage of oxygen are further improved, thereby avoiding the problem of local overoxygen or hypoxia in traditional fixed aeration, so that aerobic microorganisms can obtain a suitable dissolved oxygen environment in all areas of the pool; at the same time, the forced contact between the substrate (pollutants) and the microorganisms caused by the water flow disturbance accelerates the diffusion of metabolic products and promotes the uniform distribution and efficient metabolism of the microbial flora;

[0021] The first aerator creates a downward vortex that flushes sludge from the tank bottom, preventing it from accumulating for a long time and forming hard-to-clean compactions. The second aerator creates an upward vortex that circulates surface water, reducing sludge clumping and keeping the activated sludge uniformly suspended, ensuring full contact with the sewage. Furthermore, the shear force generated by the dual vortices moderately breaks up aged sludge, maintaining a balance between sludge activity and settling performance.

[0022] Because aeration can be performed at different depths within the pool, the water pressure makes the bubbles at the bottom of the pool small and the vortex strong, which can break up the large impurities that have settled at the bottom of the pool and effectively degrade large molecular organic matter. The bubbles in the middle of the pool are of medium size, which allows for better oxygen diffusion, optimizes bacterial collaboration, simultaneously removes nitrogen and phosphorus, and reduces sludge production.

[0023] The bubbles of pool surface aeration are large and the surface vortex is intense, mainly horizontal vortex, which covers a large area and can quickly remove surface organic matter, further improving the utilization rate of oxygen, extending the service life of the device and reducing costs.

[0024] (3) Coagulation and sedimentation / flotation stage: The present invention achieves simultaneous agitation of the upper or lower middle layers of water by providing a cylinder, a first impeller, a first aeration element, a plug, and a second aeration element. Since organic matter is not completely decomposed in the aerobic treatment stage, the aeration element can be used to accelerate the diffusion of the coagulant aid in the water during the subsequent coagulation and sedimentation / flotation stage, agglomerating into larger flocs that sink to the bottom of the pool, thereby shortening the stratification time and optimizing the reaction environment. The present invention can be applied to both stages of wastewater treatment, achieving a "one-item-two-purposes" model and optimizing the overall layout of wastewater treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2Schematic diagram of the connection structure between the slide rail and the air intake guide mechanism of the present invention;

[0027] Figure 3 This is a schematic diagram of the connection structure between the air intake guide mechanism and the floating aeration mechanism of the present invention;

[0028] Figure 4 Schematic diagram of the exploded structure of the air intake guide mechanism of the present invention;

[0029] Figure 5 This is a schematic diagram of the exploded structure of the floating aeration mechanism of the present invention;

[0030] Figure 6 This is a schematic structural diagram of the double-cavity housing of the present invention;

[0031] Figure 7 For the present invention Figure 2 Schematic diagram of the enlarged structure of area A;

[0032] Figure 8 It is a structural schematic diagram of the adjustment disk of the present invention;

[0033] Figure 9 It is a structural schematic diagram of the cylinder of the present invention;

[0034] Figure 10 This is a schematic structural diagram of the first aeration element of the present invention.

[0035] In the figure: 1, treatment tank; 2, slide rail; 21, limit opening; 22, rack; 3, air inlet guide mechanism; 31, double-chamber housing; 311, guide hole; 312, connecting plate; 313, limit strip; 32, cover; 321, three-way connector; 322, hose; 33, adjustment plate; 331, arc opening; 34, air inlet end cover; 35, second impeller; 36, connecting shaft; 37, spiral blade; 38, Gear; 39. Roller; 4. Floating aeration mechanism; 41. Cylinder; 411. Air inlet connector; 412. Limit block; 42. First impeller; 43. First aeration element; 431. Rotating tube; 432. Blades; 433. Air inlet; 434. Aeration outlet; 44. Second aeration element; 45. First plug; 46. Second plug; 47. First air inlet sleeve; 48. Second air inlet sleeve; 5. Shaft seal. DETAILED DESCRIPTION

[0036] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0037] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly used by those skilled in the art to which the present invention pertains. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0039] Example 1

[0040] like Figure 1-10 As shown, a livestock and poultry breeding wastewater treatment device includes a treatment pool 1, a plurality of slide rails 2 are set in the treatment pool 1, each slide rail 2 is provided with an air intake guide mechanism 3, the air intake guide mechanism 3 and the slide rail 2 are slidably connected, and each air intake guide mechanism 3 is provided with a floating aeration mechanism 4 that can move up and down, and the floating aeration mechanism 4 moves in a wave line along the direction of the slide rail 2. The floating aeration mechanism 4 includes a cylinder 41 with openings at both ends, and a first impeller 42, a first aeration element 43 and a second aeration element 44 are provided in the cylinder 41, and the lower end of the first aeration element 43 and the upper end of the second aeration element 44 are connected to the two end interfaces of the first impeller 42, and the first impeller 42 drives the two aeration elements to rotate synchronously to perform double-layer vortex aeration.

[0041] Through the above structure, aeration is achieved in the pool in a wave-like reciprocating manner. Through the double vortex stirring in the middle and lower layers and the middle and upper layers, the aeration point is continuously changed, avoiding the local overoxygen or hypoxia problem of traditional fixed aeration, so that aerobic microorganisms in the entire pool can obtain appropriate dissolved oxygen, which is especially beneficial for functional bacteria such as nitrifying bacteria and polyphosphate bacteria to maintain activity, accelerate the contact between substrate and microorganisms and the diffusion of metabolic products, promote the uniform distribution and efficient metabolism of the bacterial community, the bottom vortex pushes the deposited sludge, and the top vortex drives the surface water circulation, which can prevent sludge deposition and agglomeration. , maintaining the uniform suspension of activated sludge so that it is in full contact with sewage; the shear force of the double vortex water flow can also moderately break up the aged sludge and balance the sludge activity and sedimentation performance. At the same time, the continuous change of the aeration point can avoid the accumulation of impurities clogging the aeration holes. Since it can aerate at different depths and is affected by water pressure, the small bubbles at the bottom of the pool can break up the impurities that have settled on the bottom, effectively degrade large molecular organic matter, and assist in denitrification, phosphorus removal and mud reduction. The large bubbles on the pool surface have a large coverage area and can quickly remove surface organic matter, thereby improving oxygen utilization, extending the service life of the device and reducing costs.

[0042] Example 2

[0043] like Figure 4 、 6 As shown in Figures 7 and 8, the air intake guide mechanism 3 includes a dual-cavity shell 31, a cover body 32 and an air intake end cover 34. The dual-cavity shell 31 and the cover body 32 are detachably connected. Two guide holes 311 are provided on one side of the outer wall of the dual-cavity shell 31. Each guide hole 311 is connected to an inner cavity of the corresponding dual-cavity shell 31. An adjusting disk 33 is rotatably connected to the opening between the two guide holes 311. An arc-shaped opening 331 is provided on the adjusting disk 33. The adjusting disk 33 controls the air intake of the guide holes 311. The air intake end cover 34 covers the adjusting disk 33 and is connected to the thread on the dual-cavity shell 31. Through the adjusting disk 33, it is possible to switch between different guide holes 311 for ventilation. The rotating shaft at the center of the adjusting disk 33 passes through the air inlet end cover 34, and a gear 38 is provided on the part through which the rotating shaft passes on the adjusting disk 33. The gear 38 is meshed and connected with the rack 22. The rack 22 is installed at the side edge position at both ends of the slide rail 2 through a bracket. Through the mutual cooperation between the rack 22 and the gear 38, when the device moves to one end of the slide rail 2, the adjusting disk 33 can be driven to rotate to replace the other guide hole 311 for ventilation; a second impeller 35 is provided in each of the two inner cavities of the double-chamber shell 31, and the guide hole 311 faces the non-central axis side of the second impeller 35. A connecting shaft 36 is provided at one end of each second impeller 35. The connecting shaft 36 passes through one side of the outer wall of the double-chamber shell 31, and a spiral blade 37 is provided at the end of each connecting shaft 36 away from the second impeller 35. Through the mutual cooperation between the second impeller 35, the connecting shaft 36 and the spiral blade 37, the force of air pressure is utilized to enable the entire device to move linearly on the slide rail 2; a roller 39 is provided at the bottom recess position of the double-chamber shell 31, and the roller 39 is located on the slide rail 2. The roller 39 realizes the rolling connection between the double-chamber shell 31 and the slide rail 2, thereby reducing the friction resistance; both sides of the outer wall of the double-chamber shell 31 are provided with a limit bar 313, and the limit bar 313 is slidably connected to the limit opening 21, and the limit opening 21 is provided on both sides of the inner wall of the slide rail 2, so that the double-chamber shell 31 can move linearly on the slide rail 2. The cylinder 41 is connected to the outer wall of the double-chamber shell 31 by a connecting plate 312, and the through hole on the connecting plate 312 is slidably connected to the cylinder 41, and the recesses on both sides of the outer wall of the cylinder 41 are provided with limit blocks 412 for limiting the up and down movement of the cylinder 41; a three-way joint 321 is provided on the cover body 32, and a hose 322 is provided on the three-way joint 321, and the end of the hose 322 away from the three-way joint 321 is connected to the air inlet joint 411, and the connection between the three-way joint 321 and the cover body 32 can be prevented from gas backflow or interference by a one-way valve sheet.

[0044] Example 3

[0045] like Figure 5 、8 , 9 and 10, the first aeration member 43 and the second aeration member 44 have the same structure. The size of the first aeration member 43 is larger than that of the second aeration member 44, ensuring that the gas flow rate of the first aeration member 43 is greater than that of the second aeration member 44, and can provide sufficient lift, so that the lift is greater than the overall downward force of the floating aeration mechanism 4, ensuring that the floating aeration mechanism 4 floats upward as a whole during aeration; the two aeration members are symmetrically distributed with the first impeller 42, and the two aeration members include a rotating tube 431 and a plurality of blades 432, and the blades 432 are arranged around the first impeller 42 at equal intervals. The rotating tube 431 is provided at the end thereof, and an air inlet 433 is provided at the end thereof away from the blades 432. An aeration port 434 is provided on each blade 432. The aeration port 434 is connected to the air inlet 433, and the tangentially directed blades 432 and the corresponding downwardly directed aeration ports 434 are connected to each other, providing an upward lift force. The air inlet 433 positions on the first aeration member 43 and the second aeration member 44 are provided with a first air inlet sleeve 47 and a second air inlet sleeve 48, respectively. The air inlet sleeve is sleeved on the air inlet 433, so that the aeration member can be intermittently aerated during the rotation process. Air intake, that is, when the upward lift force is greater than the downward force during aeration, the floating aeration mechanism 4 moves upward as a whole. When the air inlet 433 does not coincide with the opening on the air inlet sleeve, the floating aeration mechanism 4 descends due to its own gravity greater than the buoyancy, thereby realizing an up and down floating motion mode. A first plug 45 and a second plug 46 are provided on the lower side of the first air inlet sleeve 47 and the upper side of the second air inlet sleeve 48, respectively. The first plug 45 is provided on the outer wall of the rotating tube 431 of the first aeration member 43, and the second plug 46 is provided on the outer wall of the rotating tube 431 of the second aeration member 44. The plug constrains the aeration component and provides a support point for the installation of the air intake sleeve; an air intake connector 411 is provided on one side of the outer wall of the cylinder 41, and the air intake connector 411 faces the non-central axis side of the first impeller 42, so that the air pressure on the first impeller 42 is uneven, thereby ensuring that the gas can blow the first impeller 42 to rotate; shaft seals 5 are provided between the rotating shaft of the adjusting disk 33 and the air intake end cover 34, between the connecting shaft 36 and the side wall through hole of the double-chamber shell 31, and between the rotating tube 431 and the plug, thereby avoiding air leakage problems at the outer position of the rotating connection.

[0046] The specific operation is as follows. When the treatment pool 1 is aerated, high-pressure gas is introduced from the air inlet end cover 34 through an external air pump. The gas passes through the arc-shaped opening 331 on the regulating disk 33 and enters one cavity of the double-chamber shell 31 from a guide hole 311 (at this time, the other guide hole 311 is blocked by the regulating disk 33), blowing the corresponding second impeller 35 to rotate. The second impeller 35 drives the corresponding spiral blade 37 to rotate through the connecting shaft 36, so that the double-chamber shell 31 moves linearly along the slide rail 2 through the roller 39. At the same time, under the action of the three-way joint 321 and the hose 322, the gas will enter between the first plug 45 and the second plug 46 in the cylinder 41 from the air inlet joint 411, blowing the first impeller 42 to rotate, and the first impeller 42 drives the two aeration parts to rotate synchronously. Since the air inlet sleeve 433 of the aeration part is provided, the air inlet sleeve 433 is provided at the air inlet 433. During the rotation of 33, air can only be injected into the aeration element when the air inlet 433 and the opening on the air inlet sleeve coincide with each other, thus forming an intermittent air intake mode. The gas enters from the air inlet 433, passes through the rotating tube 431 and the blade 432 in turn, and is ejected from the aeration port 434. Due to the rotation of the blade 432 and the tangential injection angle of the aeration port 434, a vortex can be formed in the pool, and the intermittent air intake allows the aeration port 434 to float up and down, thereby achieving aeration at different depths in the pool. When it moves near the rack 22, the gear 38 will engage with the rack 22, and the gear 38 drives the adjusting disk 33 to rotate, closing the previous guide hole 311 and opening the other guide hole 311. The previously rotating spiral leaf 37 stops rotating, and the other spiral leaf 37 in the opposite direction starts rotating, causing the double-chamber shell 31 to move in the opposite direction, thereby achieving a reciprocating linear movement mode.

[0047] The above description of the present invention is exemplified in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A livestock and poultry breeding wastewater treatment device, comprising a treatment tank (1), wherein a plurality of slide rails (2) are arranged in the treatment tank (1), and each of the slide rails (2) is provided with an air intake guide mechanism (3), and the air intake guide mechanism (3) and the slide rail (2) are in sliding connection, characterized in that: Each of the air inlet guide mechanisms (3) is provided with a floating aeration mechanism (4) that can move up and down, and the floating aeration mechanism (4) moves in a wave line along the direction of the slide rail (2). The floating aeration mechanism (4) includes a cylinder (41) with openings at both ends, and a first impeller (42), a first aeration element (43) and a second aeration element (44) are provided in the cylinder (41). The lower end of the first aeration element (43) and the upper end of the second aeration element (44) are connected to the interfaces at both ends of the first impeller (42), and the first impeller (42) drives the two aeration elements to rotate synchronously to perform double-layer vortex aeration; The first aeration member (43) and the second aeration member (44) have the same structure, the first aeration member (43) is larger than the second aeration member (44), the two aeration members are symmetrically distributed around the first impeller (42), and both aeration members include a rotating tube (431) and a plurality of blades (432), the blades (432) are arranged around the end of the rotating tube (431) at equal intervals, an air inlet (433) is provided at one end of the rotating tube (431) away from the blades (432), and each of the blades (432) is provided with an aeration port (434), and the aeration port (434) and the air inlet (433) are communicated; The air inlets (433) on the first aeration element (43) and the second aeration element (44) are respectively provided with a first air inlet sleeve (47) and a second air inlet sleeve (48), and the air inlet sleeves are sleeved on the air inlets (433) so that the aeration elements can intermittently intake air during rotation; A first plug (45) and a second plug (46) are provided on the lower side of the first air inlet sleeve (47) and the upper side of the second air inlet sleeve (48), respectively. The first plug (45) is provided on the outer wall of the rotating tube (431) of the first aeration element (43), and the second plug (46) is provided on the outer wall of the rotating tube (431) of the second aeration element (44).

2. The livestock and poultry breeding wastewater treatment device according to claim 1, characterized in that: An air inlet joint (411) is provided on one side of the outer wall of the cylinder (41), and the air inlet joint (411) faces the non-central axis side of the first impeller (42).

3. The livestock and poultry breeding wastewater treatment device according to claim 1, characterized in that: The air intake guide mechanism (3) comprises a double-cavity shell (31), a cover (32) and an air intake end cover (34). The double-cavity shell (31) and the cover (32) are detachably connected. Two guide holes (311) are provided on one side of the outer wall of the double-cavity shell (31). Each guide hole (311) is communicated with an inner cavity of the corresponding double-cavity shell (31). An adjusting disk (33) is rotatably connected to the opening between the two guide holes (311). The adjusting disk (33) is provided with an arc-shaped opening (331). The adjusting disk (33) controls the air intake of the guide holes (311). The air intake end cover (34) is covered on the adjusting disk (33) and is connected to the thread on the double-cavity shell (31).

4. The livestock and poultry breeding wastewater treatment device according to claim 3, characterized in that: The rotating shaft at the center of the adjusting disk (33) passes through the air inlet end cover (34), and a gear (38) is provided on the portion of the adjusting disk (33) through which the rotating shaft passes. The gear (38) is meshedly connected with a rack (22), and the rack (22) is installed at the side edges of both ends of the slide rail (2) through a bracket.

5. The livestock and poultry breeding wastewater treatment device according to claim 3, characterized in that: A second impeller (35) is provided in each of the two inner chambers of the double-chamber housing (31), the guide hole (311) faces the non-central axis side of the second impeller (35), one end of each second impeller (35) is provided with a connecting shaft (36), the connecting shaft (36) passes through one side of the outer wall of the double-chamber housing (31), and the end of each connecting shaft (36) away from the second impeller (35) is provided with a spiral blade (37), and a roller (39) is provided at a bottom recess position of the double-chamber housing (31), and the roller (39) is located on the slide rail (2).

6. The livestock and poultry breeding wastewater treatment device according to claim 5, characterized in that: Limiting strips (313) are provided on both sides of the outer wall of the double-cavity shell (31), and the limiting strips (313) are slidably connected to the limiting openings (21). The limiting openings (21) are provided on both sides of the inner wall of the slide rail (2). A connecting plate (312) is also provided on one side of the outer wall of the double-cavity shell (31), and a through hole on the connecting plate (312) and the cylinder (41) are slidably connected. Limiting blocks (412) for limiting the upward and downward movement of the cylinder (41) are provided in the recesses on both sides of the outer wall of the cylinder (41).

7. The livestock and poultry breeding wastewater treatment device according to claim 3, characterized in that: A three-way joint (321) is provided on the cover body (32), a hose (322) is provided on the three-way joint (321), and one end of the hose (322) away from the three-way joint (321) is connected to the air inlet joint (411).

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