A tailwater treatment system

Abstract

The application discloses a tail water treatment system, and relates to the technical field of tail water treatment, which comprises a vertical-flow sedimentation tank, a septic tank and a protein separator. The protein separator comprises a reaction bin, a collection cup, a first needle brush pump device, a gas supply device, a flow guide cylinder and a bubble stirring device. The flow guide cylinder is arranged in the reaction bin and connected with the bottom wall of the reaction bin. The bubble stirring device is arranged in the flow guide cylinder. The first needle brush pump device is arranged on the outer wall of the reaction bin. The liquid inlet end of the first needle brush pump device is communicated with the reaction bin. The liquid outlet end of the first needle brush pump device extends into the flow guide cylinder and faces the bubble stirring device. The bubble stirring device is used for stirring the bubbles in water, so that the bubbles are stirred and divided into multiple bubbles. A biological reactor is communicated with the reaction bin. The bubble stirring device can divide and stir the bubbles into more small bubbles, improves the separation effect of the protein separator, and makes the treated water meet the discharge standard or the recycling requirement.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a wastewater treatment system. Background Technology

[0002] Wastewater treatment systems are crucial facilities for purifying wastewater generated during aquaculture. They aim to effectively remove various pollutants from the wastewater, ensuring that discharged wastewater meets environmental protection requirements and minimizing negative impacts on the surrounding water environment. Wastewater treatment systems typically include vertical flow sedimentation tanks, protein skimmers, bioreactors, and septic tanks. Vertical flow sedimentation tanks are primarily used for preliminary wastewater treatment, allowing heavier solid particles (such as feces and feed residue) to gradually settle to the bottom under their own gravity, achieving solid-liquid separation. Protein skimmers utilize the surface tension of air bubbles to adsorb proteins and other organic matter in the water, reducing the organic matter content. Bioreactors provide a favorable environment for microorganisms to decompose organic matter in the water, ensuring that the treated water meets discharge standards or is suitable for recycling. Septic tanks remove suspended solids, organic matter, and pathogenic microorganisms from fecal wastewater through anaerobic microbial fermentation, achieving water purification.

[0003] In existing technologies, protein skimmers produce relatively large bubbles, resulting in poor separation of organic matter and ineffective separation of organic matter from wastewater. This unseparated organic matter remains in the water and flows into the bioreactor, affecting the metabolism of microorganisms within the bioreactor. Consequently, the bioreactor is unable to effectively decompose organic matter in the water, ultimately causing the treated water to fail to meet discharge standards or recycling requirements. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a wastewater treatment system that enables better separation of organic matter in wastewater, so that the treated water can meet discharge standards or be recycled.

[0005] According to an embodiment of the present invention, a wastewater treatment system includes a vertical flow sedimentation tank; a septic tank, the bottom of which is connected to the vertical flow sedimentation tank so that sediment on the bottom of the vertical flow sedimentation tank can flow into the septic tank; and a protein separator, the protein separator including a reaction chamber, a collection cup, a first needle brush pump device, an air supply device, a guide tube, and a bubble agitation device.

[0006] The reaction chamber is connected to the upper part of the vertical flow sedimentation tank so that water in the vertical flow sedimentation tank can flow into the reaction chamber. An overflow port is formed at the upper end of the reaction chamber. The collecting cup is located at the upper end of the reaction chamber and is connected to the overflow port. The overflow port is used to allow foam to overflow and flow into the collecting cup. A guide tube is located inside the reaction chamber and connected to the bottom wall of the reaction chamber. The guide tube is connected to the reaction chamber. The bubble agitation device is located inside the guide tube. The first needle brush pump device is located on the outer wall of the reaction chamber. The inlet end of the first needle brush pump device is connected to the reaction chamber, and the outlet end of the first needle brush pump device extends into the guide tube and faces the bubble agitation device. The air supply device is used to supply air to the first needle brush pump device so that the water transported by the first needle brush pump device carries bubbles and is sprayed towards the bubble agitation device. The bubble agitation device is used to agitate the bubbles in the water so that the bubbles are agitated and divided into multiple bubbles. The bioreactor is connected to the reaction chamber so that water in the reaction chamber can flow into the bioreactor.

[0007] It has at least the following beneficial effects:

[0008] When wastewater generated during aquaculture needs purification, it can first be transported to a vertical flow sedimentation tank for pretreatment. Solid particles in the wastewater will gradually settle to the bottom of the sedimentation tank under their own gravity. After sedimentation, the sediment at the bottom of the sedimentation tank is transported to a septic tank for further treatment, while the water at the top of the sedimentation tank is transported to the reaction chamber of a protein separator for separation. The inlet of the first needle brush pump is connected to the reaction chamber, and the outlet of the first needle brush pump extends into the guide tube and faces the bubble agitator. Water in the reaction chamber can be drawn into the first needle brush pump. Simultaneously, the air supply device supplies air to the first needle brush pump, causing the water inside to carry bubbles, which in turn causes the water sprayed from the outlet of the first needle brush pump to carry a large number of bubbles. Since the outlet of the first needle brush pump faces the bubble agitator, the water carrying bubbles sprayed from the outlet of the first needle brush pump can act on the bubble agitator.

[0009] The bubble agitation device is used to disperse air bubbles in the water, breaking large bubbles down into smaller ones. These smaller bubbles, formed inside the guide tube, rise and enter the reaction chamber. They adsorb organic matter in the water, forming foam on the surface. The foam accumulates on the surface and overflows from the overflow port at the top of the reaction chamber, allowing a collection cup to collect the overflowing foam with attached organic matter, thus separating the organic matter from the water. The water in the reaction chamber, after separation, is then transported to the bioreactor. The bubble agitation device disperses air bubbles in the water, breaking them down into more smaller bubbles. These smaller bubbles have a smaller surface area, increasing their contact with organic matter in the water, resulting in greater adsorption of organic matter and reducing the amount of residual organic matter in the water. Furthermore, the small bubbles are less prone to bursting, preventing attached or separated organic matter from returning to the water, thus improving the separation effect of the protein separator. This effectively reduces the organic matter content in the water within the reaction chamber, preventing the water transported to the bioreactor from carrying a large amount of organic matter. This allows the microorganisms in the bioreactor to decompose the organic matter in the water smoothly and effectively, thereby enabling the treated water to meet discharge standards or be recycled.

[0010] According to an embodiment of the present invention, the wastewater treatment system includes a bubble agitation device comprising a paddle, a first perforated plate, and a rotating shaft. The rotating shaft is parallel to the vertical direction, and its lower end is rotatably connected to the bottom wall of the guide tube. The first perforated plate is connected to the rotating shaft. The paddle is disposed on the lower surface of the first perforated plate. The outlet end of the first needle brush pump is disposed below the first perforated plate and facing the paddle. A gap is left in the horizontal direction between the outlet end of the first needle brush pump and the axis of the rotating shaft, so that water sprayed from the outlet end of the first needle brush pump can impact the paddle and cause the paddle, the first perforated plate, and the rotating shaft to rotate. The holes on the first perforated plate are for bubbles to pass through, so that the rotating first perforated plate can agitate and break the bubbles.

[0011] According to an embodiment of the present invention, the wastewater treatment system further includes a second needle brush pump device, which is disposed on the outer wall of the reaction chamber. The inlet end of the second needle brush pump device is connected to the reaction chamber, and the outlet end of the second needle brush pump device extends into the guide tube. The air supply device is used to supply air to the first needle brush pump device and the second needle brush pump device simultaneously. The outlet end of the second needle brush pump device is disposed below the first perforated plate and faces the impeller. The outlet ends of the second needle brush pump device and the outlet ends of the first needle brush pump device are symmetrical about the axis of the rotating shaft.

[0012] According to an embodiment of the present invention, the wastewater treatment system further includes a second porous plate, which is disposed above the first porous plate. The second porous plate is connected to the upper end of the rotating shaft so that the rotating shaft can drive the second porous plate to rotate. The holes on the second porous plate are used for air bubbles to pass through so that the rotating second porous plate can disperse and separate the air bubbles.

[0013] According to an embodiment of the present invention, the wastewater treatment system further includes a bubble agitation device, wherein the upper end of the rotating shaft is connected to the second porous plate via the transmission device, so that the rotating shaft can drive the second porous plate to move up and down reciprocally while rotating.

[0014] According to an embodiment of the wastewater treatment system of the present invention, a support is provided inside the guide tube, and a limiting hole is provided on the support. The support is located above the second perforated plate, and a clearance hole is provided in the middle of the second perforated plate. The transmission component includes a first sleeve, a second sleeve, and a bearing. The second sleeve is sleeved outside the first sleeve, and the first sleeve and the second sleeve are connected by the bearing so that the second sleeve can rotate around the axis of the first sleeve. The first sleeve passes through the clearance hole and the limiting hole. The inner wall of the limiting hole is used to restrict the first sleeve from rotating around its own axis. The second sleeve and... The second perforated plate is connected. The first sleeve is provided with a guide post. The outer wall of the second sleeve is provided with a guide groove parallel to the vertical direction. The upper end of the rotating shaft is provided with a transmission rod and a transmission block. The outer wall of the transmission rod is provided with a track groove forming a closed loop. The upper part of the track groove is close to the upper end of the transmission rod, and the lower part of the track groove is close to the lower end of the transmission rod. The transmission rod and the transmission block extend into the first sleeve and the guide groove, respectively. The guide post extends into the track groove, so that the rotating shaft can drive the second sleeve to rotate and drive the first sleeve and the second sleeve to move up and down reciprocally.

[0015] According to an embodiment of the present invention, the transmission component further includes a limiting component. The transmission block is provided with an oblong hole parallel to the vertical direction. The limiting component passes through the oblong hole and is connected to the inner bottom wall of the guide groove. The limiting component is used to restrict the transmission block from dislodging from the guide groove.

[0016] According to an embodiment of the present invention, the tailwater treatment system includes a first needle brush pump device comprising a first needle brush water pump, a first inlet pipe, and a first outlet pipe. The first needle brush water pump is disposed on the outer wall of the reaction chamber. The inlet end of the first needle brush water pump is connected to the reaction chamber through the first inlet pipe. One end of the first outlet pipe is connected to the outlet end of the first needle brush water pump. The other end of the first outlet pipe extends into the guide tube and faces the bubble agitation device. The first outlet pipe is connected to the output end of the air supply device.

[0017] According to an embodiment of the wastewater treatment system of the present invention, the middle part of the bottom wall of the collection cup is a frustum shape that gradually increases from top to bottom.

[0018] According to an embodiment of the present invention, the wastewater treatment system further includes a rinsing device disposed inside the collection cup. The rinsing device is used to rinse the foam inside the collection cup. The collection cup is provided with a drain pipe located near the bottom wall of the collection cup. The drain pipe is used to discharge water and foam from the collection cup.

[0019] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the tailwater treatment system according to an embodiment of the present invention;

[0022] Figure 2 This is a cross-sectional schematic diagram of the protein separator in the tailwater treatment system of this invention.

[0023] Figure 3 This is a top view schematic diagram of the impeller, the first outlet pipe, and the second outlet pipe in the tailwater treatment system of an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the bubble agitation device in the tailwater treatment system of this invention.

[0025] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0026] Figure 6 This is a partial structural diagram of the bubble agitation device in the tailwater treatment system of this invention.

[0027] Figure 7 This is a schematic diagram of the exploded structure of the bubble dispersion device in the tailwater treatment system of this invention.

[0028] Figure 8 This is a schematic diagram of the transmission component in the tailwater treatment system of this invention.

[0029] Figure 9 This is a schematic diagram of the structure of the rotating shaft in the tailwater treatment system of this invention.

[0030] Figure 10 This is a partial structural cross-sectional view of the bubble agitation device in the tailwater treatment system of this invention.

[0031] Figure label:

[0032] Vertical flow sedimentation tank 100;

[0033] 200 septic tank;

[0034] Protein separator 300; reaction chamber 310; overflow port 311; collection cup 320; guide tube 330; support 331; limiting hole 332; first needle brush pump device 340; first needle brush water pump 341; first water inlet pipe 342; first water outlet pipe 343; second needle brush pump device 350; second water outlet pipe 351; bubble agitator 360; first perforated plate 361; second perforated plate 362; impeller 363; clearance hole 364; transmission component 370; first sleeve 371; second sleeve 372; bearing 373; guide groove 374; guide column 375; rotating shaft 380; transmission rod 381; transmission block 382; track groove 383; air supply device 390;

[0035] Bioreactor 400. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0038] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0039] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0040] refer to Figure 1 and Figure 2 According to an embodiment of the present invention, the wastewater treatment system includes a vertical flow sedimentation tank 100, a septic tank 200, a protein separator 300, and a bioreactor 400.

[0041] The septic tank 200 is connected to the bottom of the vertical flow sedimentation tank 100 so that the sediment on the bottom of the vertical flow sedimentation tank 100 can flow into the septic tank 200. The protein separator 300 includes a reaction chamber 310, a collection cup 320, a first needle brush pump device 340, an air supply device 390, a guide cylinder 330, and a bubble agitator 360. The reaction chamber 310 is connected to the upper part of the vertical flow sedimentation tank 100 so that water in the vertical flow sedimentation tank 100 can flow into the reaction chamber 310. An overflow port 311 is formed at the upper end of the reaction chamber 310. The collection cup 320 is located at the upper end of the reaction chamber 310 and is connected to the overflow port 311. The overflow port 311 is used for foam to overflow and flow into the collection cup 320. The guide cylinder 330 is located inside the reaction chamber 310 and is connected to the upper part of the reaction chamber 310. The bottom wall is connected to the flow guide tube 330, which is connected to the reaction chamber 310. A bubble agitator 360 is located inside the flow guide tube 330. A first needle brush pump device 340 is located on the outer wall of the reaction chamber 310. The inlet end of the first needle brush pump device 340 is connected to the reaction chamber 310, and the outlet end of the first needle brush pump device 340 extends into the flow guide tube 330 and faces the bubble agitator 360. An air supply device 390 supplies air to the first needle brush pump device 340 so that the water transported by the first needle brush pump device 340 carries bubbles and is sprayed towards the bubble agitator 360. The bubble agitator 360 agitates the bubbles in the water, breaking them into multiple bubbles. A bioreactor 400 is connected to the reaction chamber 310 so that water from the reaction chamber 310 can flow into the bioreactor 400.

[0042] A vertical flow sedimentation tank 100, a protein separator 300, and a bioreactor 400 are connected in sequence. The vertical flow sedimentation tank 100 is also connected to a septic tank 200. Wastewater from aquaculture is first transported to the vertical flow sedimentation tank 100 for pretreatment. The vertical flow sedimentation tank 100 is a water treatment facility that uses gravity sedimentation to separate solids and liquids. After the wastewater is transported to the vertical flow sedimentation tank 100, the solid particles in the wastewater gradually settle to the bottom of the vertical flow sedimentation tank 100 under their own gravity, effectively reducing the suspended solids content in the wastewater and keeping the water at the top of the vertical flow sedimentation tank 100 clear. After the wastewater in the vertical flow sedimentation tank 100 has settled, the sediment at the bottom is transported to the septic tank 200, and the water at the top is transported to the protein separator 300. In this embodiment of the invention, the septic tank 200 includes a primary tank, a secondary tank, and a tertiary tank connected in sequence. The primary sedimentation tank is connected to the vertical flow sedimentation tank 100. Water and sediment from the bottom of the vertical flow sedimentation tank 100 are first transported to the primary sedimentation tank. The primary sedimentation tank mainly performs sedimentation treatment and preliminary anaerobic fermentation on the water and sediment. Then, the water and sediment in the primary sedimentation tank are sent to the secondary sedimentation tank for deep anaerobic fermentation. Finally, the water in the secondary sedimentation tank is sent to the tertiary sedimentation tank for further clarification. In one embodiment of the invention, the clear water in the tertiary sedimentation tank can also be returned to the vertical flow sedimentation tank 100 for further sedimentation. The vertical flow sedimentation tank 100 and the septic tank 200 are common components in wastewater treatment systems, and their corresponding principles and structures will not be further elaborated here. In this embodiment of the invention, the wastewater treatment system also includes multiple pumps for transporting wastewater, allowing the wastewater to flow between the vertical flow sedimentation tank 100, the septic tank 200, the protein separator 300, and the bioreactor 400; these details will not be further elaborated here.

[0043] The protein separator 300 includes a reaction chamber 310, a collection cup 320, a first needle brush pump device 340, an air supply device 390, a flow guide tube 330, and a bubble agitator 360. The reaction chamber 310 is connected to the upper part of the vertical flow sedimentation tank 100 and to the bioreactor 400. After the wastewater in the vertical flow sedimentation tank 100 has settled, the water in the upper part of the vertical flow sedimentation tank 100 flows into the reaction chamber 310, and then the first needle brush pump device 340 and the air supply device 390 are activated. The inlet and outlet of the first needle brush pump device 340 are simultaneously connected to the reaction chamber 310, allowing water in the reaction chamber 310 to be drawn into the first needle brush pump device 340. At the same time, the air supply device 390 supplies air to the first needle brush pump device 340, causing the water in the first needle brush pump device 340 to carry air bubbles. The first needle brush pump device 340 disperses these air bubbles, resulting in a large number of air bubbles being ejected from the outlet of the first needle brush pump device 340. After the air bubbles are introduced into the reaction chamber 310, organic matter such as proteins in the water is adsorbed onto the surface of the bubbles. As the bubbles rise, they carry the organic matter and form foam on the water surface. This foam accumulates on the water surface and overflows from the overflow port 311 at the top of the reaction chamber 310. The collection cup 320 collects the overflowed foam with attached organic matter, thus separating the organic matter from the water. After separation, the water in the reaction chamber 310 is transported to the bioreactor 400. In this embodiment of the invention, the protein separator 300 also includes a drain pipe, and the reaction chamber 310 is connected to the bioreactor 400 through the drain pipe, so that the water in the reaction chamber 310 can flow into the bioreactor 400 through the drain pipe.

[0044] It needs to be explained that in the existing technology, the needle pump device in the protein separator 300 generates relatively large bubbles. On the one hand, the large bubbles have a smaller specific surface area, reducing the opportunity for them to come into contact with proteins and other organic matter in the water. Consequently, some proteins and other organic matter cannot be adsorbed by the large bubbles, resulting in some proteins and other organic matter remaining in the water. On the other hand, the large bubbles are prone to bursting, causing the already attached or separated proteins and other organic matter to return to the water. Therefore, it can be seen that when the bubbles generated by the protein separator 300 are too large, the proteins and other organic matter in the water within the reaction chamber 310 cannot be effectively separated, resulting in a large amount of protein and other organic matter remaining in the water within the reaction chamber 310, thus reducing the separation efficiency of the protein separator 300. When water carrying organic matter flows into the bioreactor 400 from the reaction chamber 310, it alters the environmental conditions within the bioreactor 400. Some microorganisms with strong organic matter decomposition capabilities may overproduce due to organic matter overload, while other microorganisms may be inhibited or even die due to changes in environmental conditions (such as excessive oxygen consumption or changes in pH). This imbalance in the microbial community within the bioreactor 400 leads to a deterioration in the water treatment effect, ultimately resulting in the treated water failing to meet discharge standards or recycling requirements. In this embodiment of the invention, the bioreactor 400 can be a moving bed bioreactor 400, a common setup in wastewater treatment systems. Its corresponding structure and principles will not be further elaborated here.

[0045] In one embodiment of the present invention, the bubble agitation device 360 ​​includes a motor and multiple vertical and vertical stirring rods. One end of each stirring rod is connected to the output end of the motor, which drives the stirring rods to rotate within the guide tube 330. The outlet end of the first needle brush pump device 340 faces the stirring rods, allowing water carrying bubbles ejected from the outlet end of the first needle brush pump device 340 to act on the rotating stirring rods. The stirring rods agitate the bubbles, breaking them into multiple smaller bubbles. Finally, the bubbles in the guide tube 330 rise and enter the reaction chamber 310 to complete the water separation process within the reaction chamber 310. It should be noted that the bubbles break during the agitation process, forming multiple smaller bubbles.

[0046] Understandably, when wastewater generated during the aquaculture process needs to be purified, it can first be transported to a vertical flow sedimentation tank 100 for pretreatment. Solid particles in the wastewater will gradually settle to the bottom of the vertical flow sedimentation tank 100 under their own gravity. After sedimentation, the sediment at the bottom of the vertical flow sedimentation tank 100 is transported to a septic tank 200 for further treatment, while the water at the top of the vertical flow sedimentation tank 100 is transported to the reaction chamber 310 of the protein separator 300 for separation. The inlet of the first needle brush pump device 340 is connected to the reaction chamber 310, and the outlet of the first needle brush pump device 340 extends into the guide tube 330 and faces the bubble agitator 360. Water in reaction chamber 310 can be drawn into the first needle brush pump device 340. Simultaneously, the air supply device 390 supplies air to the first needle brush pump device 340, causing air bubbles to be carried in the water within the device. Consequently, the water ejected from the outlet of the first needle brush pump device 340 carries a large number of air bubbles. Since the outlet of the first needle brush pump device 340 faces the bubble agitator 360, the water carrying air bubbles ejected from the outlet of the first needle brush pump device 340 can act on the bubble agitator 360.

[0047] The bubble agitator 360 is used to agitate the bubbles in the water, breaking large bubbles into smaller ones. The small bubbles formed in the guide tube 330 rise and enter the reaction chamber 310. These small bubbles adsorb organic matter in the water and form foam on the surface. The foam accumulates on the surface and overflows from the overflow port 311 at the top of the reaction chamber 310, allowing the collection cup 320 to collect the overflowing foam with attached organic matter, thus separating the organic matter from the water. After separation, the water in the reaction chamber 310 is transported to the bioreactor 400. The bubble agitator 360 agitates the bubbles in the water, breaking them down into more small bubbles. The smaller surface area of ​​these small bubbles increases their contact with organic matter in the water, resulting in more organic matter being adsorbed and reducing the amount of organic matter remaining in the water. Furthermore, the small bubbles are less prone to bursting, preventing attached or separated organic matter from returning to the water, thus improving the separation effect of the protein separator 300. This effectively reduces the organic matter content in the water within the reaction chamber 310, preventing the water transported to the bioreactor 400 from carrying a large amount of organic matter. This allows the microorganisms within the bioreactor 400 to decompose the organic matter in the water smoothly and effectively, thereby enabling the treated water to meet discharge standards or be recycled.

[0048] refer to Figure 2 and Figure 3The first needle brush pump device 340 includes a first needle brush water pump 341, a first inlet pipe 342, and a first outlet pipe 343. The first needle brush water pump 341 is located on the outer wall of the reaction chamber 310. The inlet end of the first needle brush water pump 341 is connected to the reaction chamber 310 through the first inlet pipe 342. One end of the first outlet pipe 343 is connected to the outlet end of the first needle brush water pump 341, and the other end of the first outlet pipe 343 extends into the guide tube 330 and faces the bubble agitation device 360. The first outlet pipe 343 is connected to the output end of the air supply device 390. It can be understood that the connection between the first outlet pipe 343 and the output end of the air supply device 390 allows the air supply device 390 to deliver gas into the first outlet pipe 343, causing the water in the first outlet pipe 343 to carry air bubbles. After the first needle brush water pump 341 is started, water in the reaction chamber 310 flows into the inlet of the first needle brush water pump 341 through the first inlet pipe 342. The high-speed rotating needle brush in the first needle brush water pump 341 can disperse the air bubbles carried in the water in the first outlet pipe 343. Under the pumping action of the first needle brush water pump 341, water carrying a large number of air bubbles will be sprayed into the guide tube 330 through the first outlet pipe 343. The first needle brush water pump 341 and the air supply device 390 are common settings in protein separators 300, and their specific working principles will not be further described here.

[0049] refer to Figures 2 to 4 The bubble agitation device 360 ​​includes a blade 363, a first porous plate 361, and a rotating shaft 380. The rotating shaft 380 is parallel to the vertical direction, and its lower end is rotatably connected to the bottom wall of the guide tube 330. The first porous plate 361 is connected to the rotating shaft 380. The blade 363 is disposed on the lower surface of the first porous plate 361. The liquid outlet of the first needle brush pump device 340 is disposed below the first porous plate 361 and faces the blade 363. A gap is left in the horizontal direction between the liquid outlet of the first needle brush pump device 340 and the axis of the rotating shaft 380 so that the water sprayed from the water outlet of the first needle brush pump device 340 can impact the blade 363 and cause the blade 363, the first porous plate 361, and the rotating shaft 380 to rotate. The holes on the first porous plate 361 are used for bubbles to pass through so that the rotating first porous plate 361 can agitate and break the bubbles. Understandably, the impeller 363, the first perforated plate 361, and the rotating shaft 380 are all coaxially arranged. The outlet end of the first needle brush pump device 340 and the axis of the rotating shaft 380 have a horizontal gap, meaning the outlet end of the first needle brush pump device 340 is eccentrically positioned relative to the impeller 363. After the first needle brush pump device 340 is activated, the water carrying air bubbles ejected from its outlet end impacts the impeller 363, causing it to rotate around the axis of the rotating shaft 380. The rotating impeller 363 then drives the first perforated plate 361 and the rotating shaft 380 to rotate together.

[0050] The first porous plate 361 has multiple holes for air bubbles to pass through. Since the outlet of the first needle brush pump device 340 is located below the first porous plate 361, the water below the first porous plate 361 carries a large number of air bubbles. As the bubbles rise, they pass through the holes in the first porous plate 361. Because the first porous plate 361 rotates, the hole walls of the holes in the first porous plate 361 divide and disperse the bubbles, causing them to be broken down into smaller bubbles. After passing through the first porous plate 361, the bubbles continue to rise, leaving the guide tube 330 and entering the reaction chamber 310. (Reference) Figure 2 and Figure 3 In this embodiment of the invention, the portion of the first water outlet pipe 343 located inside the reaction chamber 310 is parallel to the left and right direction, and the axis of the portion of the first water outlet pipe 343 located inside the reaction chamber 310 is perpendicular to the axis of the rotating shaft 380, and there is a gap between the two axes in the horizontal direction, so that the first water outlet pipe 343 and the blade 363 are eccentrically arranged, thereby enabling the water sprayed from the other end of the first water outlet pipe 343 to drive the blade 363 to rotate.

[0051] refer to Figure 2 and Figure 3 The wastewater treatment system also includes a second needle brush pump device 350, which is located on the outer wall of the reaction chamber 310. The inlet end of the second needle brush pump device 350 is connected to the reaction chamber 310, and the outlet end of the second needle brush pump device 350 extends into the guide tube 330. An air supply device 390 is used to supply air to both the first needle brush pump device 340 and the second needle brush pump device 350 simultaneously. The outlet end of the second needle brush pump device 350 is located below the first perforated plate 361 and faces the impeller 363. The outlet ends of the second needle brush pump device 350 and the first needle brush pump device 340 are symmetrical about the axis of rotation 380. It can be understood that the outlet end of the second needle brush pump device 350 faces the impeller 363, so that the water sprayed from the outlet end of the second needle brush pump device 350 can also impact the impeller 363 and drive the impeller 363 to rotate. The outlet ends of the second needle brush pump device 350 and the first needle brush pump device 340 are symmetrical about the axis of the rotating shaft 380. This ensures that the water sprayed from the outlet ends of the first needle brush pump device 340 and the second needle brush pump device 350 can impact both sides of the impeller 363, thereby making the force on the impeller 363 more uniform and ensuring that the impeller 363, the first perforated plate 361, and the rotating shaft 380 can rotate smoothly. On the other hand, the addition of the second needle brush pump device 350 can provide more abundant bubbles, which is beneficial to improving the separation effect of the protein separator 300.

[0052] In this embodiment of the invention, the second needle brush pump device 350 includes a second needle brush water pump, a second inlet pipe, and a second outlet pipe 351. The second needle brush water pump is disposed on the outer wall of the reaction chamber 310. The inlet end of the second needle brush water pump is connected to the reaction chamber 310 through the second inlet pipe. One end of the second outlet pipe 351 is connected to the outlet end of the second needle brush water pump, and the other end of the second outlet pipe 351 extends into the guide tube 330 and faces the bubble agitation device 360. The second outlet pipe 351 is connected to the output end of the air supply device 390. The second needle brush water pump operates on the same principle as the first needle brush water pump 341, and will not be further described here. (See reference...) Figure 3 In this embodiment of the invention, the portion of the second water outlet pipe 351 located within the reaction chamber 310 is parallel to the left-right direction. The axis of the portion of the second water outlet pipe 351 located within the reaction chamber 310 is perpendicular to the axis of the rotating shaft 380, and a gap is left between the two axes in the horizontal direction. This allows the second water outlet pipe 351 to be eccentrically positioned with respect to the blade 363, thereby enabling the water sprayed from the other end of the second water outlet pipe 351 to drive the blade 363 to rotate. Specifically, the portions of the first water outlet pipe 343 and the second water outlet pipe 351 located within the reaction chamber 310 are centrally symmetrical about the axis of the rotating shaft 380.

[0053] refer to Figure 2 , Figure 4 and Figure 7 The bubble agitation device 360 ​​also includes a second porous plate 362, which is positioned above the first porous plate 361. The second porous plate 362 is connected to the upper end of a rotating shaft 380, allowing the rotating shaft 380 to drive the second porous plate 362 to rotate. Holes on the second porous plate 362 allow bubbles to pass through, thus agitating and breaking down the bubbles. It is understood that the connection between the second porous plate 362 and the upper end of the rotating shaft 380 enables the shaft to drive the second porous plate 362 to rotate. After passing through the first porous plate 361, the bubbles continue to rise and approach the second porous plate 362, which has multiple holes for the bubbles to pass through. Because the second porous plate 362 continues to rotate, the hole walls of the holes in the second porous plate 362 effectively separate and agitate the bubbles as they pass through. On the one hand, during the process of the first porous plate 361 dividing and dispersing the bubbles, some bubbles may pass directly through the first porous plate 361 without being divided and dispersed. The second porous plate 362 can divide and disperse these bubbles again, effectively preventing large bubbles that have not been divided and dispersed from rising into the reaction chamber 310. On the other hand, the second porous plate 362 can divide and disperse the rising bubbles again, so that the bubbles can be divided and dispersed into multiple small bubbles, thereby making the small bubbles rising into the reaction chamber 310 more abundant, which is beneficial to improving the separation effect of the protein separator 300.

[0054] refer to Figures 4 to 8 The bubble agitation device 360 ​​also includes a transmission component 370. The upper end of the rotating shaft 380 is connected to the second porous plate 362 via the transmission component 370, so that the rotating shaft 380 can drive the second porous plate 362 to move up and down simultaneously while rotating. It can be understood that the upper end of the rotating shaft 380 is connected to the second porous plate 362 via the transmission component 370. Under the transmission action of the transmission component 370, the rotating shaft 380 can drive the second porous plate 362 to rotate and also drive the second porous plate 362 to move up and down reciprocally. The complex motion path of the second porous plate 362, which can rotate and move up and down simultaneously, greatly increases the probability of collisions between bubbles and between bubbles and the second porous plate 362. This also makes the movement of water and bubbles around the second porous plate 362 more intense, making it easier for bubbles in the water to break into multiple smaller bubbles, thereby improving the bubble agitation effect of the second porous plate 362.

[0055] refer to Figures 4 to 7 The guide tube 330 contains a support 331 with a limiting hole 332. The support 331 is positioned above the second perforated plate 362. The second perforated plate 362 has a clearance hole 364 in its middle. The transmission component 370 includes a first sleeve 371, a second sleeve 372, and a bearing 373. The second sleeve 372 is sleeved outside the first sleeve 371. The first sleeve 371 and the second sleeve 372 are connected by the bearing 373, allowing the second sleeve 372 to rotate around the axis of the first sleeve 371. The first sleeve 371 passes through the clearance hole 364 and the limiting hole 332. The inner wall of the limiting hole 332 restricts the first sleeve 371 from rotating around its own axis. The second sleeve 372 is connected to the second perforated plate 362. The first sleeve 371 is equipped with a guide post 375, and the outer wall of the second sleeve 372 is equipped with a guide groove 374 parallel to the vertical direction. The upper end of the rotating shaft 380 is equipped with a transmission rod 381 and a transmission block 382. The outer wall of the transmission rod 381 is equipped with a closed-loop track groove 383. The upper part of the track groove 383 is close to the upper end of the transmission rod 381, and the lower part of the track groove 383 is close to the lower end of the transmission rod 381. The transmission rod 381 and the transmission block 382 extend into the first sleeve 371 and the guide groove 374, respectively, and the guide post 375 extends into the track groove 383, so that the rotating shaft 380 can drive the second sleeve 372 to rotate and drive the first sleeve 371 and the second sleeve 372 to move up and down reciprocally. In this embodiment of the invention, the bearing 373 can be a bidirectional thrust bearing.

[0056] Understandably, the second sleeve 372 is positioned outside the first sleeve 371. The first sleeve 371 is mounted on the inner ring of the bearing 373, and the second sleeve 372 is mounted on the outer ring of the bearing 373, allowing the second sleeve 372 to rotate around the axis of the first sleeve 371. The bracket 331 is mounted on the inner wall of the guide tube 330. The bracket 331 has a limiting hole 332, and the second perforated plate 362 has a clearance hole 364 in its center. The first sleeve 371 passes through the limiting hole 332 and the clearance hole 364. The inner wall of the limiting hole 332 abuts against the outer wall of the first sleeve 371, thus limiting the first sleeve 371 and preventing it from rotating around its own axis. Furthermore, the first sleeve 371 can move vertically within the limiting hole 332. The second sleeve 372 is connected to the second perforated plate 362, enabling the second sleeve 372 to drive the second perforated plate 362 to rotate. The upper end of the rotating shaft 380 is provided with a transmission block 382 and a transmission rod 381. The transmission rod 381 is coaxial with the rotating shaft 380. The transmission block 382 extends into a guide groove 374 parallel to the vertical direction on the outer wall of the second sleeve 372. The outer wall of the rotating shaft 380 is provided with a closed-loop track groove 383, which is inclined such that the upper part of the track groove 383 is close to the upper end of the transmission rod 381, and the lower part of the track groove 383 is close to the lower end of the transmission rod 381. The rotating shaft 380 extends into the first sleeve 371, and the guide post 375 on the first sleeve 371 extends into the track groove 383 on the outer wall of the rotating shaft 380.

[0057] refer to Figures 8 to 10 When the rotating shaft 380 starts to rotate, the transmission block 382 at the upper end of the rotating shaft 380 begins to rotate around the axis of the rotating shaft 380, and the transmission rod 381 at the upper end of the rotating shaft 380 begins to rotate around its own axis. The transmission block 382 can abut against the inner wall of the guide groove 374 on the outer wall of the second sleeve 372, so that the transmission block 382 can drive the second sleeve 372 to rotate, and in turn, the second sleeve 372 drives the second perforated plate 362 to rotate. The inner wall of the track groove 383 on the outer wall of the transmission rod 381 can abut against the guide post 375 on the first sleeve 371, and the inner wall of the track groove 383 can drive the guide post 375 to move up and down reciprocally, so that the guide post 375 can drive the first sleeve 371 to move up and down reciprocally. Since the first sleeve 371 and the second sleeve 372 are connected by the bearing 373, the first sleeve 371 can drive the second sleeve 372 and the second perforated plate 362 to move up and down reciprocally. This shows that when the shaft 380 starts to rotate, the second sleeve 372 can move up and down reciprocatingly while rotating, thus enabling the second sleeve 372 to drive the second perforated plate 362 to move up and down reciprocatingly while rotating. (Reference) Figure 9The projection of the track groove 383 in the vertical direction is a circular projection, and the projection of the track groove 383 in the front-back direction is an elliptical ring projection. The inner wall of the track groove 383 guides the guide post 375. Since the inner wall of the limiting hole 332 hinders the rotation of the first sleeve 371, the guide post 375 moves back and forth up and down under the drive of the inner wall of the track groove 383.

[0058] In one embodiment of the present invention, the transmission component 370 further includes a limiting component. The transmission block 382 has an oblong hole parallel to the vertical direction. The limiting component passes through the oblong hole and connects to the inner bottom wall of the guide groove 374. The limiting component is used to prevent the transmission block 382 from dislodging from the guide groove 374. It is understood that, in one embodiment of the present invention, the limiting component can be a bolt. The bolt passes through the oblong hole on the transmission block 382 and connects to the inner bottom wall of the guide groove 374. The nut of the bolt can abut against the transmission block 382, ​​effectively preventing the transmission block 382 from dislodging from the guide groove 374 and ensuring that the transmission block 382 can stably drive the second sleeve 372 to rotate. In another embodiment of the present invention, the upper end of the rotating shaft 380 is provided with two transmission blocks 382, ​​and the outer wall of the second sleeve 372 is provided with two guide grooves 374. The two transmission blocks 382 extend into the two guide grooves 374 respectively. Further details are omitted here.

[0059] refer to Figure 2 The bottom wall of the collecting cup 320 has a frustum shape that gradually increases in size from top to bottom. The protein separator 300 also includes a rinsing device located inside the collecting cup 320. This rinsing device is used to rinse away foam within the collecting cup 320. A drain pipe is provided on the collecting cup 320, located near its bottom wall, to drain water and foam from the collecting cup 320. It is understood that the frustum shape of the bottom wall of the collecting cup 320 allows the middle section to guide the foam flowing into the collecting cup 320, ensuring that the foam flows towards the lowest point of the bottom wall. The drain pipe, located near the bottom wall of the collecting cup 320, allows water and foam accumulated on the bottom wall of the collecting cup 320 to drain smoothly for subsequent processing. The collection cup 320 is also equipped with a rinsing device, which can rinse the foam in the collection cup 320 so that the foam in the collection cup 320 can be discharged more smoothly through the drain pipe.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A tailwater treatment system, characterized by, Comprising: a vertical flow sedimentation tank (100); a septic tank (200) in communication with a bottom of the vertical flow sedimentation tank (100) to enable sediment on the bottom of the vertical flow sedimentation tank (100) to flow into the septic tank (200); a protein separator (300) including a reaction bin (310), a collection cup (320), a first needle brush pump device (340), a gas supply device (390), a flow guide cylinder (330), and a bubble breaking device (360), the reaction bin (310) being in communication with an upper portion of the vertical flow sedimentation tank (100) to enable water in the vertical flow sedimentation tank (100) to flow into the reaction bin (310), an upper end of the reaction bin (310) being formed with an overflow port (311) for foam to overflow and flow into the collection cup (320), the flow guide cylinder (330) being disposed in the reaction bin (310) and connected with a bottom wall of the reaction bin (310), the flow guide cylinder (330) being in communication with the reaction bin (310), the bubble breaking device (360) being disposed in the flow guide cylinder (330), the first needle brush pump device (340) being disposed on an outer wall of the reaction bin (310), a liquid inlet end of the first needle brush pump device (340) being in communication with the reaction bin (310), a liquid outlet end of the first needle brush pump device (340) extending into the flow guide cylinder (330) and facing the bubble breaking device (360), the gas supply device (390) being used to supply gas to the first needle brush pump device (340) to enable water transported by the first needle brush pump device (340) to carry bubbles and be sprayed toward the bubble breaking device (360), the bubble breaking device (360) being used to break bubbles in water to enable the bubbles to be broken and divided into multiple bubbles; The bubble stirring device (360) comprises a paddle (363), a first perforated plate (361), a rotating shaft (380) and a second perforated plate (362), the rotating shaft (380) is parallel to the up-down direction, the lower end of the rotating shaft (380) is rotatably connected to the bottom wall of the flow guide cylinder (330), the first perforated plate (361) is connected to the rotating shaft (380), the paddle (363) is arranged on the lower surface of the first perforated plate (361), the liquid outlet end of the first needle brush pump device (340) is arranged below the first perforated plate (361) and faces the paddle (363), the liquid outlet end of the first needle brush pump device (340) and the axis of the rotating shaft (380) leave a gap in the horizontal direction, so that the water sprayed from the liquid outlet end of the first needle brush pump device (340) can impact on the paddle (363), and the paddle (363), the first perforated plate (361) and the rotating shaft (380) can rotate, the holes on the first perforated plate (361) are used for passing bubbles, so that the rotating first perforated plate (361) can stir and divide the bubbles, the second perforated plate (362) is arranged above the first perforated plate (361), the second perforated plate (362) is connected to the upper end of the rotating shaft (380), so that the rotating rotating shaft (380) can drive the second perforated plate (362) to rotate, the holes on the second perforated plate (362) are used for passing bubbles, so that the rotating second perforated plate (362) can stir and divide the bubbles; A second needle brush pump device (350) is arranged on the outer wall of the reaction chamber (310), the liquid inlet end of the second needle brush pump device (350) is communicated with the reaction chamber (310), the liquid outlet end of the second needle brush pump device (350) extends into the flow guide cylinder (330), the gas supply device (390) is used for simultaneously supplying gas to the first needle brush pump device (340) and the second needle brush pump device (350), the liquid outlet end of the second needle brush pump device (350) is arranged below the first perforated plate (361) and faces the paddle (363), and the liquid outlet end of the second needle brush pump device (350) and the liquid outlet end of the first needle brush pump device (340) are centrally symmetric around the axis of the rotating shaft (380); A bioreactor (400) is communicated with the reaction chamber (310), so that the water in the reaction chamber (310) can flow into the bioreactor (400).

2. The tailwater treatment system of claim 1, wherein: The bubble stirring device (360) further comprises a transmission member (370), the upper end of the rotating shaft (380) is drivingly connected to the second perforated plate (362) through the transmission member (370), so that the rotating rotating shaft (380) can drive the second perforated plate (362) to move up and down while rotating.

3. The tailwater treatment system of claim 2, wherein: The guide cylinder (330) is internally provided with a support (331), the support (331) is provided with a limiting hole (332), the support (331) is arranged above the second porous plate (362), the middle part of the second porous plate (362) is provided with an avoiding hole (364), the transmission part (370) comprises a first sleeve (371), a second sleeve (372) and a bearing (373), the second sleeve (372) is sleeved outside the first sleeve (371), the first sleeve (371) and the second sleeve (372) are connected through the bearing (373), so that the second sleeve (372) can rotate around the axis of the first sleeve (371), the first sleeve (371) is arranged in the avoiding hole (364) and the limiting hole (332), the inner wall of the limiting hole (332) is used for limiting the first sleeve (371) from rotating around the axis, the second sleeve (372) is connected with the second porous plate (362), the first sleeve (371) is provided with a guide column (375), the outer wall of the second sleeve (372) is provided with a guide groove (374) parallel to the up-down direction, the upper end of the rotating shaft (380) is provided with a transmission rod (381) and a transmission block (382), the outer wall of the transmission rod (381) is provided with a track groove (383) forming a closed loop, the upper part of the track groove (383) is close to the upper end of the transmission rod (381), the lower part of the track groove (383) is close to the lower end of the transmission rod (381), the transmission rod (381) and the transmission block (382) respectively extend into the first sleeve (371) and the guide groove (374), the guide column (375) extends into the track groove (383), so that the rotating shaft (380) can drive the second sleeve (372) to rotate and drive the first sleeve (371) and the second sleeve (372) to move up and down reciprocatingly.

4. The tail water treatment system of claim 3, wherein: The transmission part (370) further comprises a limiting part, the transmission block (382) is provided with a waist-shaped hole parallel to the up-down direction, the limiting part is arranged in the waist-shaped hole and connected with the inner bottom wall of the guide groove (374), the limiting part is used for limiting the transmission block (382) from being taken out of the guide groove (374).

5. The tail water treatment system of claim 1, wherein: The first needle brush pump device (340) comprises a first needle brush water pump (341), a first water inlet pipe (342) and a first water outlet pipe (343), the first needle brush water pump (341) is arranged on the outer wall of the reaction bin (310), the water inlet end of the first needle brush water pump (341) is communicated with the reaction bin (310) through the first water inlet pipe (342), one end of the first water outlet pipe (343) is communicated with the water outlet end of the first needle brush water pump (341), the other end of the first water outlet pipe (343) extends into the guide cylinder (330) and faces the bubble scattering device (360), the first water outlet pipe (343) is communicated with the output end of the air supply device (390).

6. The tail water treatment system of claim 1, wherein: The middle part of the bottom wall of the collecting cup (320) is in the shape of a circular truncated cone gradually increasing from top to bottom.

7. The tail water treatment system of claim 6, wherein: The protein separator (300) further comprises a flushing device arranged in the collecting cup (320), the flushing device being used for flushing the foam in the collecting cup (320), the collecting cup (320) being provided with a sewage pipe close to the bottom wall of the collecting cup (320), the sewage pipe being used for discharging the water and the foam in the collecting cup (320).

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