Integrated sewage treatment equipment

Abstract

The application discloses an integrated sewage treatment equipment, and relates to the technical field of sewage treatment, which comprises a box body, a grid filter tank, an anaerobic tank, an aerobic tank, a membrane biological reaction tank and a clear liquid storage tank are sequentially formed in the box body from left to right; the grid filter tank, the anaerobic tank, the aerobic tank, the membrane biological reaction tank and the clear liquid storage tank are connected through a pump set; an aeration pipe group is arranged in the aerobic tank; the aeration pipe group comprises a plurality of aeration pipes which are arranged in the bottom of the aerobic tank in the width direction of the aerobic tank and an air injection pipe which is connected with one end of the plurality of aeration pipes. The application drives the inner pipe to rotate through the gas, and then the air discharged from the outer pipe is continuously changed in the circumferential direction of the outer pipe. The continuously changed gas impacts the organic matter particles deposited at the bottom of the sedimentation tank, so that the organic matter particles float up, thereby increasing the probability of contact between the organic matter particles and the microorganisms, and being beneficial to improving the decomposition efficiency of the organic matter.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an integrated wastewater treatment device. Background Technology

[0002] Integrated wastewater treatment equipment combines a bar screen filter, anaerobic tank, aerobic tank, membrane bioreactor, and clarified liquid storage tank into a single unit. Aeration is performed in the aerobic tank, effectively combining contact oxidation and activated sludge processes, saving the hassle of designing wastewater treatment processes and constructing infrastructure. Aeration in the contact oxidation tank increases the oxygen content in the wastewater, promoting microbial growth and decomposition of organic matter. Some organic particles in the wastewater are relatively large; as contact oxidation progresses, these larger particles settle to the bottom of the contact oxidation tank. Even with aeration pipe groups installed, the distance between the aeration holes and the bottom makes it difficult for the organic particles deposited in the angled area between the aeration pipe walls and the bottom to be agitated, thus affecting the decomposition efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide an integrated wastewater treatment device to solve the problems mentioned in the background art.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0005] The present invention provides an integrated wastewater treatment device, including a tank, wherein the tank comprises, from left to right, a bar screen filter, an anaerobic tank, an aerobic tank, a membrane bioreactor, and a clear liquid storage tank; the bar screen filter, anaerobic tank, aerobic tank, membrane bioreactor, and clear liquid storage tank are connected by a pump set;

[0006] The aerobic tank is equipped with an aeration pipe group; the aeration pipe group includes several aeration pipes evenly arranged along the width of the aerobic tank at the bottom of the aerobic tank and an air injection pipe connected to one end of the several aeration pipes. The several aeration pipes are parallel to each other and arranged along the length of the aerobic tank. One end of the air injection pipe is sealed and the air inlet of the air injection pipe extends to connect with a blower.

[0007] The aeration pipe includes an outer pipe, an inner pipe, and a rotating pipe arranged coaxially from the outside to the inside. Both ends of the outer pipe are provided with sealing components to form a sealed chamber inside the outer pipe. Aeration holes are evenly arranged and penetrated along the length of the outer wall of the outer pipe.

[0008] The outer wall of the inner tube is tightly attached to the inner wall of the outer tube, and both ends of the inner tube are sealed. A connecting groove extending along the length of the inner tube is provided through the inner tube.

[0009] Both ends of the rotating tube are open, and several spiral channels are evenly arranged along the circumference inside the rotating tube. There is an annular gap between the rotating tube and the inner tube. The two ends of the rotating tube are the air inlet and the air outlet, respectively. There is an air inlet gap between the air outlet of the rotating tube and one sealed end of the inner tube. The air inlet of the rotating tube passes through the other sealed end of the inner tube and the corresponding sealing component. The rotating tube is fixedly connected to the sealed end of the inner tube through which it passes. The rotating tube is rotatably connected to the sealing component through which it passes. The sealing component of the aeration tube near the end of the rotating tube is detachably connected to the air outlet of the air injection tube.

[0010] Furthermore, the sealing component includes a sleeve, one end of which is detachably connected to a sealing plate, and the sleeve forms a columnar movable cavity and a columnar connecting cavity from the sealing plate to the other end, respectively. The inner wall of the columnar connecting cavity is provided with internal threads, and the outer walls at both ends of the outer tube are provided with internal threads.

[0011] Furthermore, both ends of the inner tube extend into the cylindrical movable cavity of the sleeve, and bearings are installed on the outer wall of the inner tube within the cylindrical movable cavity.

[0012] Furthermore, the connecting groove extends spirally along the length of the inner tube.

[0013] Furthermore, the aeration hole group includes aeration holes evenly arranged along the circumference of the outer pipe, and a sealing ring is provided on the outer side of each aeration hole group. The sealing ring is sleeved on the outer side of the outer pipe. The sealing ring has a first position covering the outer side of the aeration hole group to seal the aeration hole group and a second position between adjacent aeration hole groups to release the sealing of the aeration hole group.

[0014] Furthermore, an elastic driving component is provided in the sleeve at the end of the outer tube away from the air injection tube. The elastic driving component includes a movable ring that is axially slidably disposed in a cylindrical movable cavity. The inner wall of the movable ring is tightly attached to the inner wall of the cylindrical movable cavity. An abutting ring that abuts against the outer ring of the bearing is provided on the side of the movable ring close to the inner tube. A return spring is provided between the side of the movable ring away from the inner tube and the sealing plate.

[0015] The elastic drive component also includes a movable shaft that axially penetrates the center of the sealing plate. The movable shaft is slidably sealed with the sealing plate, and one end of the movable shaft inside the cylindrical movable cavity is fixedly connected to the movable ring through a fixed rod. Pull rods are evenly arranged along the circumferential direction on the outer side of the movable shaft outside the cylindrical movable cavity. The pull rods are fixedly connected to the sealing rings on the outer side of the outer tube. The pull rods are fixedly connected to the movable shaft through connectors.

[0016] Furthermore, the aeration holes are strip-shaped and extend along the length of the outer tube.

[0017] Furthermore, a fixing ring is provided on the outer pipe between adjacent aeration hole groups. When the sealing ring is in the first position, one end of the sealing ring abuts against the fixing ring, and the end of the sealing ring away from the fixing ring is connected to a sealing rubber tube. The end of the sealing rubber tube away from the sealing ring is fixedly connected to the outer wall of the outer pipe.

[0018] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0019] This invention uses gas to drive the inner tube to rotate, which in turn causes the air discharged from the outer tube to change continuously along the circumference of the outer tube. The constantly changing gas impacts the organic particles at the bottom of the sedimentation tank, causing the organic matter to float up, thereby increasing the probability of organic particles coming into contact with microorganisms and improving the decomposition efficiency of organic matter.

[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the invention. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

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

[0023] Figure 2 This is a schematic diagram of the aeration tube assembly structure in Embodiment 1 of the present invention;

[0024] Figure 3 This is a schematic cross-sectional view of the aeration pipe in Embodiment 1 of the present invention;

[0025] Figure 4 This is a schematic diagram of the sealing component structure according to Embodiment 1 of the present invention;

[0026] Figure 5 This is a schematic diagram of the inner tube structure of Embodiment 1 of the present invention;

[0027] Figure 6 This is a cross-sectional structural diagram of Embodiment 2 of the present invention;

[0028] Figure 7 yes Figure 6 A schematic diagram of the partial structure at point A;

[0029] Figure 8 This is a schematic diagram of the inner tube structure of Embodiment 2 of the present invention.

[0030] In the picture:

[0031] 1-Box body; 11-Grate filter tank; 12-Anaerobic tank; 13-Aerobic tank; 14-Membrane bioreactor; 15-Clear liquid storage tank; 2-Aeration pipe; 22-Outer pipe; 221-Aeration hole group; 2211-Aeration hole; 23-Inner pipe; 231-Connecting groove; 24-Rotating pipe; 241-Spiral channel; 242-Air inlet end; 243-Air outlet end; 25-Sealing component; 251-Sleeve; 252-Sealing plate; 253-Columnar movable cavity; 254-Columnar connecting cavity; 3-Bearing; 4-Sealing ring; 5-Elastic drive component; 51-Moving ring; 52-Abutting ring; 53-Reset spring; 54-Moving shaft; 55-Tie rod; 6-Fixing ring; 7-Sealing rubber tube. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] Example 1, please refer to Figures 1-8 This invention provides an integrated wastewater treatment device, including a housing 1. From left to right, the housing 1 comprises a bar screen filter 11, an anaerobic tank 12, an aerobic tank 13, a membrane bioreactor 14, and a clarified liquid storage tank 15. The bar screen filter 11, anaerobic tank 12, aerobic tank 13, membrane bioreactor 14, and clarified liquid storage tank 15 are connected by a pump set (not shown). During operation, wastewater first enters the bar screen filter 11, where the screen removes large suspended solids and impurities. It then enters the anoxic tank for preliminary hydrolysis to improve the biodegradability of the wastewater. Next, the pump set introduces the wastewater into the aerobic tank 13, where a blower aerates the water. Under the action of aerobic microorganisms, the COD in the water is decomposed. Simultaneously, ammonia nitrogen is converted to nitrate nitrogen by nitrifying bacteria. Finally, the wastewater enters the membrane bioreactor 14 for solid-liquid separation, reducing the suspended solids content and achieving sludge-water separation. The effluent is then discharged into the clarified liquid storage tank 15. The above are all existing technologies, and their working principles will not be elaborated on here.

[0034] The present invention aims to solve the problem that during the aeration process in the aerobic tank 13, organic particles deposited in the angled area between the perimeter of the aeration pipe 2 and the bottom of the tank are difficult to be stirred up by aeration, thus affecting the decomposition efficiency of organic matter.

[0035] An aeration pipe group is provided in the aerobic tank 13; the aeration pipe group includes a number of aeration pipes 2 evenly arranged along the width direction of the aerobic tank 13 at the bottom of the aerobic tank 13 and an air injection pipe connected to one end of the number of aeration pipes 2. The number of aeration pipes 2 are parallel to each other and arranged along the length direction of the aerobic tank 13. One end of the air injection pipe is sealed and the air inlet of the air injection pipe extends to connect with a blower.

[0036] The aeration pipe 2 includes an outer pipe 22, an inner pipe 23 and a rotating pipe 24 arranged coaxially from the outside to the inside. Both ends of the outer pipe 22 are provided with sealing components 25 to form a sealed chamber inside the outer pipe 22. Aeration hole groups 221 are evenly arranged and penetrated along the length direction on the outer wall of the outer pipe 22.

[0037] The outer wall of the inner tube 23 is tightly attached to the inner wall of the outer tube 22, and both ends of the inner tube 23 are sealed. A connecting groove 231 extending along the length direction is provided through the inner tube 23.

[0038] Both ends of the rotating tube 24 are open, and several spiral channels 241 are evenly arranged in the circumferential direction inside the rotating tube 24. There is an annular gap between the rotating tube 24 and the inner tube 23. The two ends of the rotating tube 24 are the air inlet end 242 and the air outlet end 243, respectively. There is an air inlet gap between the air outlet end 243 of the rotating tube 24 and one end of the sealed end of the inner tube 23. The air inlet end 242 of the rotating tube 24 passes through the other end of the sealed end of the inner tube 23 and the corresponding sealing member 25. The rotating tube 24 is fixedly connected to the sealed end of the inner tube 23 through which it passes. The rotating tube 24 is rotatably connected to the sealing member 25 through which it passes. The sealing member 25 of the aeration tube 2 near the end of the rotating tube 24 is detachably connected to the air outlet of the air injection tube.

[0039] During use, the blower injects air into the air injection pipe, which then guides the air into the aeration pipe 2 for aeration. As the gas enters and exits the aeration pipe 2, it enters the rotating pipe 24 through the air inlet 242. Since the rotating pipe 24 has several spiral channels 241, the gas will drive the rotating pipe 24 to rotate as it flows axially along the rotating pipe 24. At this time, the rotating pipe 24 will drive the inner pipe 23 to rotate in the cavity of the outer pipe 22, and connect with the aeration hole group 221 on the outer pipe 22 in sequence through the connecting groove 231. This causes the air discharged from the outer pipe 22 to change continuously along the circumference of the outer pipe 22. The constantly changing gas will impact the organic matter particles at the bottom of the sedimentation tank, causing the organic matter to float up, thereby increasing the probability of contact between the organic matter particles and microorganisms, which is beneficial to improving the decomposition efficiency of organic matter.

[0040] In a specific embodiment of the present invention, the sealing component 25 includes a sleeve 251, one end of which is detachably connected to a sealing plate 252. The sleeve 251 forms a columnar movable cavity 253 and a columnar connecting cavity 254 from the sealing plate 252 to the other end, respectively. The inner wall of the columnar connecting cavity 254 is provided with internal threads, and the outer walls at both ends of the outer tube 22 are also provided with internal threads. Based on the above design, it is convenient to assemble the inner tube 23 and the rotating tube 24 into the outer tube 22, and the outer tube 22 can be directly replaced after corrosion and damage, reducing costs.

[0041] In a specific embodiment of the present invention, both ends of the inner tube 23 extend into the cylindrical movable cavity 253 of the sleeve 251, and bearings 3 are installed on the outer wall of the inner tube 23 within the cylindrical movable cavity 253. Based on the above design, the inner tube 23 can rely on the bearings 3 at both ends to enable the rotating tube 24 and the inner tube 23 to rotate smoothly within the outer tube 22.

[0042] In a specific embodiment of the present invention, the connecting groove 231 extends spirally along the length of the inner tube 23. Based on the above design, it is ensured that during the continuous rotation of the inner tube 23, at least a portion of the connecting groove 231 overlaps with the aeration hole group 221 of the outer tube 22.

[0043] Example 2, based on Example 1, includes aeration holes 221 evenly arranged along the circumference of the outer tube 22. Each aeration hole group 221 has a sealing ring 4 on its outer side. The sealing ring 4 is sleeved on the outer side of the outer tube 22. The sealing ring 4 has a first position covering the outside of the aeration hole group 221 to seal it, and a second position between adjacent aeration hole groups 221 to release the seal. Based on this design, during aeration, the sealing ring 4 moves to the second position, where it is positioned between adjacent aeration hole groups 221, allowing gas to exit from the aeration holes 2211 of each group for aeration. When not in use, the sealing ring 4 moves to the first position, sealing each aeration hole group 221 to prevent impurities from clogging the aeration holes 2211.

[0044] In a specific embodiment of the present invention, an elastic driving member 5 is provided inside the sleeve 251 at the end of the outer tube 22 away from the air injection pipe. The elastic driving member 5 includes a movable ring 51 axially slidably disposed in a cylindrical movable cavity 253. The inner wall of the movable ring 51 is tightly attached to the inner wall of the cylindrical movable cavity 253, and an abutment ring 52 that abuts the outer ring of the bearing 3 is axially extended on the side of the movable ring 51 near the inner tube 23. A return spring 53 is provided between the side of the movable ring 51 away from the inner tube 23 and the sealing plate 252. The elastic drive component 5 also includes a movable shaft 54 ​​that axially penetrates the center of the sealing plate 252. The movable shaft 54 ​​is in sliding sealing fit with the sealing plate 252, and one end of the movable shaft 54 ​​inside the cylindrical movable cavity 253 is fixedly connected to the movable ring 51 through a fixed rod. Pull rods 55 are evenly arranged along the circumferential direction on the outer side of the movable shaft 54 ​​outside the cylindrical movable cavity 253. The pull rods 55 are fixedly connected to the sealing ring 4 on the outer side of the outer tube 22. The pull rods 55 are fixedly connected to the movable shaft 54 ​​through a connector.

[0045] Based on the above design, when the blower stops working, under the action of the return spring 53, the contact ring 52 of the movable ring 51 pushes the inner tube 23 to move towards the air injection pipe end inside the outer tube 22. At this time, the movable ring 51 can move the pull rod 55 through the movable shaft 54, thereby moving the sealing ring 4 to the first position and completing the sealing of the aeration hole group 221. When the blower is working, the gas enters the inner tube 23 through the rotating tube 24. At this time, since the sealing ring 4 seals the aeration hole group 221, the gas will push the inner tube 23 to move, causing the movable ring 51 to move away from the air injection pipe end and squeeze the return spring 53. During this process, the movable shaft 54 ​​can move the sealing ring 4 to the second position through the pull rod 55.

[0046] It should be noted that the present invention can make the sealing ring 4 move continuously on one side of the outer tube 22 by repeatedly injecting air intermittently, thereby removing impurities on the outer tube 22 through the sealing ring 4.

[0047] In a specific embodiment of the present invention, the aeration hole 2211 is strip-shaped and extends along the length of the outer tube 22. Based on the above design, during use, the air injection volume can be adjusted by adjusting the power of the blower, which in turn adjusts the compression of the return spring 53, thereby adjusting the distance the sealing ring 4 moves, i.e., the overlap between the sealing ring 4 and the aeration hole 2211, thus completing the adjustment of the diameter of the aeration hole 2211.

[0048] In a specific embodiment of the present invention, a fixing ring 6 is provided on the outer pipe 22 between adjacent aeration hole groups 221. When the sealing ring 4 is in the first position, one end abuts against the fixing ring 6, and the end of the sealing ring 4 away from the fixing ring 6 is connected to a sealing rubber tube 7. The end of the sealing rubber tube 7 away from the sealing ring 4 is fixedly connected to the outer wall of the outer pipe 22. Based on the above design, the sealing effect of the sealing ring 4 on the aeration holes 2211 can be improved.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An integrated wastewater treatment device, comprising a tank, wherein the tank comprises, from left to right, a bar screen filter, an anaerobic tank, an aerobic tank, a membrane bioreactor, and a clear liquid storage tank; the bar screen filter, anaerobic tank, aerobic tank, membrane bioreactor, and clear liquid storage tank are connected by a pump set; Its features are, The aerobic tank is equipped with an aeration pipe group; the aeration pipe group includes several aeration pipes evenly arranged along the width of the aerobic tank at the bottom of the aerobic tank and an air injection pipe connected to one end of the several aeration pipes. The several aeration pipes are parallel to each other and arranged along the length of the aerobic tank. One end of the air injection pipe is sealed and the air inlet of the air injection pipe extends to connect with a blower. The aeration pipe includes an outer pipe, an inner pipe, and a rotating pipe arranged coaxially from the outside to the inside. Both ends of the outer pipe are provided with sealing components to form a sealed chamber inside the outer pipe. Aeration holes are evenly arranged and penetrated along the length of the outer wall of the outer pipe. The outer wall of the inner tube is tightly attached to the inner wall of the outer tube, and both ends of the inner tube are sealed. A connecting groove extending along the length of the inner tube is provided through the inner tube. Both ends of the rotating tube are open, and several spiral channels are evenly arranged along the circumference inside the rotating tube. There is an annular gap between the rotating tube and the inner tube. The two ends of the rotating tube are the air inlet and the air outlet, respectively. There is an air inlet gap between the air outlet of the rotating tube and one sealed end of the inner tube. The air inlet of the rotating tube passes through the other sealed end of the inner tube and the corresponding sealing component. The rotating tube is fixedly connected to the sealed end of the inner tube through which it passes. The rotating tube is rotatably connected to the sealing component through which it passes. The sealing component of the aeration tube near the end of the rotating tube is detachably connected to the air outlet of the air injection tube. Both ends of the inner tube extend into the cylindrical movable cavity of the sleeve, and bearings are installed on the outer wall of the inner tube inside the cylindrical movable cavity. The aeration hole group includes aeration holes evenly arranged along the circumference of the outer tube. Each aeration hole group has a sealing ring on its outer side. The sealing ring is sleeved on the outer side of the outer tube. The sealing ring has a first position that covers the outer side of the aeration hole group to seal the aeration hole group and a second position that is between adjacent aeration hole groups to release the sealing of the aeration hole group. An elastic drive component is provided inside the sleeve at the end of the outer tube away from the air injection tube. The elastic drive component includes a movable ring that is axially slidably disposed in a cylindrical movable cavity. The inner wall of the movable ring is tightly attached to the inner wall of the cylindrical movable cavity. An abutting ring that abuts against the outer ring of the bearing is provided on the side of the movable ring close to the inner tube. A return spring is provided between the side of the movable ring away from the inner tube and the sealing plate. The elastic drive component also includes a movable shaft that axially penetrates the center of the sealing plate. The movable shaft is slidably sealed with the sealing plate, and one end of the movable shaft inside the cylindrical movable cavity is fixedly connected to the movable ring through a fixed rod. Pull rods are evenly arranged along the circumferential direction on the outer side of the movable shaft outside the cylindrical movable cavity. The pull rods are fixedly connected to the sealing rings on the outer side of the outer tube. The pull rods are fixedly connected to the movable shaft through connectors.

2. The integrated sewage treatment equipment according to claim 1, characterized in that, The sealing component includes a sleeve, one end of which is detachably connected to a sealing plate, and the sleeve forms a columnar movable cavity and a columnar connecting cavity from the sealing plate to the other end, respectively. The inner wall of the columnar connecting cavity is provided with internal threads, and the outer walls at both ends of the outer tube are provided with internal threads.

3. The integrated sewage treatment equipment according to claim 1, characterized in that, The connecting groove extends spirally along the length of the inner tube.

4. The integrated sewage treatment equipment according to claim 1, characterized in that, The aeration holes are strip-shaped and extend along the length of the outer tube.

5. The integrated sewage treatment equipment according to claim 1, characterized in that, A fixing ring is provided on the outer pipe between adjacent aeration hole groups. When the sealing ring is in the first position, one end of the sealing ring abuts against the fixing ring, and the end of the sealing ring away from the fixing ring is connected to a sealing rubber tube. The end of the sealing rubber tube away from the sealing ring is fixedly connected to the outer wall of the outer pipe.

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