A continuous flow aerobic granular sludge treatment device

Abstract

The present application belongs to the technical field of sewage treatment, and discloses a continuous flow aerobic granular sludge treatment device, which includes a pool A, a pool O, an aerobic granular sludge generating mechanism, a clear liquid discharge component and a reflux component, wherein the pool A constitutes an anaerobic pool, the pool O constitutes an aerobic pool, the pool O is arranged outside the pool A and extends along the circumference of the pool A, the bottom of the pool O is connected to the bottom of the pool A, the aerobic granular sludge generating mechanism is arranged inside the pool O and located at the outer edge of the pool O, a water inlet is arranged on the upper part of the aerobic granular sludge generating mechanism, the clear liquid discharge component has a water inlet end located inside the aerobic granular sludge generating mechanism and a drainage end extending to the outside of the pool O, the water inlet end is located above the water inlet, and the reflux component includes a first reflux pipe located in the pool O and connected to the aerobic granular sludge generating mechanism, and a second reflux pipe connected to the aerobic granular sludge generating mechanism and extending to the pool A.

Description

Technical Field

[0001] The present application belongs to the technical field of sewage treatment, and specifically relates to a continuous flow aerobic granular sludge treatment device. Background Art

[0002] At present, most sewage treatment plants use the activated sludge process, which has good treatment effect and simple operation. However, with the increasingly serious water resource problems and water pollution problems, the traditional activated sludge treatment process can no longer meet the existing emission standards. Therefore, aerobic granular sludge treatment process came into being. It is a granular sludge formed by self-generation and self-agglomeration of microorganisms under aerobic conditions. It has a compact structure, good sedimentation performance, good treatment effect, and can remove toxic and harmful substances while removing nitrogen and phosphorus. It has good application prospects.

[0003] Since the aerobic granular sludge treatment process requires the establishment of multiple treatment tanks, the area occupied by the aerobic granular sludge treatment process is relatively large; and there are blind spots, uneven flow rates and turbulence in the sewage flow, which in turn affect the growth of aerobic granular sludge, thus affecting the sewage treatment efficiency; at the same time, the construction cost of the supporting facilities required for the existing aerobic granular sludge treatment process is relatively high. Summary of the invention

[0004] The present application provides a continuous flow aerobic granular sludge treatment device to solve at least one of the above technical problems.

[0005] The technical solution adopted in this application is:

[0006] A continuous flow aerobic granular sludge treatment device, comprising:

[0007] A tank, wherein the A tank constitutes an anaerobic tank;

[0008] An O pool, wherein the O pool constitutes an aerobic pool, is disposed outside the A pool and extends along the circumference of the A pool, and the bottom of the O pool is connected to the bottom of the A pool, so that the sewage entering the A pool enters the O pool through the bottom of the A pool;

[0009] an aerobic granular sludge generating mechanism, the aerobic granular sludge generating mechanism is used to generate aerobic granular sludge and is arranged inside the O tank and located at the outer edge of the O tank, and a water inlet is arranged on the upper part of the aerobic granular sludge generating mechanism so that the sewage entering the O tank can enter the interior of the aerobic granular sludge generating mechanism through the water inlet;

[0010] A clear liquid discharge component, the clear liquid discharge component having a water inlet end located inside the aerobic granular sludge generating mechanism and a water discharge end extending to the outside of the O tank, the water inlet end being located above the water inlet, so that the clear liquid inside the aerobic granular sludge generating mechanism can be discharged through the clear liquid discharge component;

[0011] A reflux assembly, the reflux assembly comprising a first reflux pipe located in the O tank and connected to the aerobic granular sludge producing mechanism, and a second reflux pipe connected to the aerobic granular sludge producing mechanism and extending into the A tank, wherein the connection position between the first reflux pipe and the aerobic granular sludge producing mechanism is located above the connection position between the second reflux pipe and the aerobic granular sludge producing mechanism.

[0012] By adopting the above technical scheme, when the continuous flow aerobic granular sludge treatment device in the present application is used, the sewage enters the A pool, and after the sewage entering the A pool is fully mixed with the aerobic granular sludge, it enters the O pool through the bottom of the A pool, and the sewage entering the O pool enters the interior of the aerobic granular sludge generating mechanism through the water inlet after aerobic treatment, and the larger particles entering the aerobic granular sludge generating mechanism are precipitated to the bottom of the aerobic granular sludge generating mechanism, while the smaller particles are precipitated in the middle and upper part of the aerobic granular sludge generating mechanism, and then the smaller particles enter the O pool through the first return pipe, so that the granular sludge proliferates rapidly in the O pool; the larger particles enter the A pool through the second return pipe for denitrification to remove COD and N-NH in the sewage. 4 , and part of the granular sludge undergoes secondary decomposition to form nuclei, thereby increasing the amount of aerobic granular sludge to improve the sewage treatment effect; the supernatant of the aerobic granular sludge production mechanism enters the subsequent sewage treatment unit through the clear liquid discharge component.

[0013] Since the O pool in the application is arranged around the A pool, the area occupied by the continuous flow aerobic granular sludge treatment device is greatly reduced, and the sewage enters the O pool from the bottom and enters the interior of the aerobic granular sludge production mechanism from the top, thereby increasing the flow route of the sewage, which is beneficial to the full contact between the aerobic granular sludge and oxygen, greatly improving the utilization rate of oxygen, so that the capacity of the O pool can be reduced to further reduce the construction cost, and at the same time reduce the aerobic air volume, so that the fan power required for the continuous flow aerobic granular sludge treatment device is reduced, thereby reducing the equipment investment cost and operating cost.

[0014] In addition, the continuous flow aerobic granular sludge treatment device in the present application adopts a radial flow method to avoid the blind area of ​​sewage flow, so that the flow rate of sewage is more uniform, the aerobic granular sludge is more dispersed, and the aerobic efficiency is higher. Aerobic granular sludge is transported to different aerobic zones of pool A and pool O according to particle size for reaction, which promotes the rapid growth of aerobic granular sludge and improves the denitrification capacity of the continuous flow aerobic granular sludge treatment device.

[0015] Optionally, the first reflux pipe has a first liquid outlet, and the first liquid outlet is located at the upper part of the O pool and faces upward;

[0016] And / or, the second reflux pipe has a second liquid outlet, and the second liquid outlet is located at the upper part of the A pool and faces upward.

[0017] By adopting the above technical solution, since the first liquid outlet is located at the upper part of the O tank and is arranged to face upward, the flow path of the aerobic granular sludge entering the O tank through the first reflux pipe in the O tank is increased, so as to further make the aerobic granular sludge fully contact with oxygen, so as to greatly improve the utilization rate of oxygen; at the same time, the sinking aerobic granular sludge forms a greater friction with the upstream sewage, which utilizes the formation and proliferation of aerobic granular sludge to further improve the treatment effect of sewage.

[0018] Since the second liquid outlet is located at the upper part of pool A and faces upward, the flow path of the aerobic granular sludge entering pool A through the second return pipe is increased in pool A, so as to further improve the denitrification removal of COD and N-NH 4 effect, and at the same time improve the secondary decomposition of aerobic granular sludge to form nuclei, so as to further increase the amount of aerobic granular sludge, thereby further improving the sewage treatment effect.

[0019] Optionally, the interior of the O pool has an inner area close to the A pool and an outer area away from the A pool, the first reflux pipe includes a first connecting section and a first liquid outlet section, the first connecting section is connected to the aerobic granular sludge producing mechanism, and the first liquid outlet section is located in the inner area.

[0020] By adopting the above technical solution, since the first liquid outlet section is located in the inner area, the distance between the first liquid outlet section and the water inlet is increased to ensure the flow path of the aerobic granular sludge flowing out through the first liquid outlet section in the O tank, and avoid the aerobic granular sludge flowing out through the first liquid outlet section directly entering the aerobic granular sludge generating mechanism through the water inlet under the action of the aerobic granular sludge flowing upward, thereby ensuring the proliferation effect of the aerobic granular sludge, so as to improve the treatment effect of the sewage. In addition, it can also avoid the occurrence of the flow blind area in the O tank to ensure the growth efficiency of the aerobic granular sludge.

[0021] Optionally, the pool A has a central area and a side area surrounding the central area, the second reflux pipe includes a second connecting section and a second liquid outlet section, the second connecting section is connected to the aerobic granular sludge producing mechanism and extends into the pool A, and the second liquid outlet section is located in the side area.

[0022] By adopting the above technical solution, the sewage in pool A flows obliquely from the central area to the side area, which may result in a flow blind area above the side area. The second liquid outlet section is arranged in the side area so that the sewage above the side area can flow, thereby avoiding the occurrence of a flow blind area in the side area, thereby improving the denitrification removal of COD and N-NH 4 effect, while improving the secondary decomposition of aerobic granular sludge to form nuclei.

[0023] Optionally, the clear liquid discharge assembly includes a water outlet tank body disposed inside the aerobic granular sludge generating mechanism and a water outlet pipe connected to the water outlet tank body, and the water outlet pipe extends to the outside of the O tank.

[0024] By adopting the above technical solution, the supernatant located above the aerobic granular sludge generating mechanism enters the water outlet tank body, and the supernatant entering the water outlet tank body enters the subsequent sewage treatment unit through the water outlet pipe to realize the discharge of the supernatant.

[0025] Optionally, the water inlet is arranged on a side of the aerobic granular sludge producing mechanism close to the A tank, and the water outlet trough is located on a side of the aerobic granular sludge producing mechanism away from the A tank.

[0026] By adopting the above technical scheme, since the water inlet is arranged on the side of the aerobic granular sludge producing mechanism close to pool A, and the water outlet tank body is located on the side of the aerobic granular sludge producing mechanism away from pool A, the distance between the water inlet and the water outlet tank body is increased, so as to minimize the impact of the sewage entering the aerobic granular sludge producing mechanism through the water inlet on the supernatant, so as to avoid the situation where the sewage is discharged from the aerobic granular sludge producing mechanism through the water outlet tank body, thereby improving the sewage treatment effect.

[0027] Optionally, a plurality of aerobic granular sludge generating mechanisms are arranged along the circumference of the O tank, and the water outlet tank body is extended along the circumference of the O tank to penetrate the plurality of aerobic granular sludge generating mechanisms.

[0028] By adopting the above technical scheme, since a plurality of aerobic granular sludge producing mechanisms are arranged along the circumference of the O tank, the production efficiency of aerobic granular sludge is improved, so as to improve the treatment efficiency of sewage; and the water outlet trough body is extended along the circumference of the O tank to penetrate the plurality of aerobic granular sludge producing mechanisms, so that the plurality of aerobic granular sludge producing mechanisms share one water outlet trough body, so as to reduce the number of water outlet pipes, thereby reducing the cost of the continuous flow aerobic granular sludge treatment device, and at the same time can also increase the stability of the water outlet trough body.

[0029] Optionally, the top of the water outlet trough body is open to form a clear liquid inlet of the water outlet trough body, and the top of the water outlet trough body is slidably connected to a floating resistance structure that can float up and down following the liquid surface.

[0030] By adopting the above-mentioned technical scheme, since the top of the water outlet trough body is slidably connected with a floating resistance structure that can float up and down following the liquid surface, the floating resistance structure can block the particles in the aerobic granular sludge producing mechanism, so as to prevent the particles inside the aerobic granular sludge producing mechanism from entering the water outlet trough body through the clear liquid inlet, thereby improving the sewage treatment effect.

[0031] Optionally, a sludge screener is provided in the aerobic granular sludge generating mechanism, and the first return pipe and the second return pipe are both connected to the sludge screener.

[0032] By adopting the above technical scheme, since a sludge screener is provided in the aerobic granular sludge producing mechanism, the situation where the aerobic granular sludge is too large in particle size and hollow inside and floats and loses can be avoided. At the same time, the particle size uniformity of the aerobic granular sludge is ensured, and the growth rate of the aerobic granular sludge is accelerated, thereby improving the sewage treatment effect.

[0033] Optionally, it also includes a water inlet pipe, which is located above the A pool and the O pool, and the water outlet end of the water inlet pipe is located directly above the A pool.

[0034] By adopting the above technical solution, since the outlet end of the water inlet pipe is located directly above pool A, the sewage can enter pool A from the top of pool A, thereby increasing the flow path of the sewage and improving the full contact between the aerobic granular sludge and the sewage, thereby improving the treatment effect of the sewage.

[0035] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0036] 1. The continuous flow aerobic granular sludge treatment device in the present application includes a pool A, a pool O, an aerobic granular sludge generating mechanism, a clear liquid discharge component and a reflux component. Pool A constitutes an anaerobic pool, and pool O constitutes an aerobic pool. Pool O is arranged outside pool A and extends along the circumference of pool A. The bottom of pool O is connected to the bottom of pool A so that the sewage entering pool A enters pool O through the bottom of pool A, thereby greatly reducing the area occupied by the continuous flow aerobic granular sludge treatment device. The sewage enters pool O from the bottom and enters the interior of the aerobic granular sludge generating mechanism from the top, thereby increasing the flow route of the sewage, which is beneficial to the full contact between the aerobic granular sludge and oxygen, greatly improving the utilization rate of oxygen, so as to reduce the capacity of pool O, further reduce the construction cost, and reduce the aerobic air volume, so that the fan power required for the continuous flow aerobic granular sludge treatment device is reduced, reducing the equipment investment cost and operating cost; the aerobic granular sludge generating mechanism is used to generate aerobic granular sludge particles and The aerobic granular sludge generating mechanism is arranged inside the O pool and at the outer edge of the O pool. A water inlet is arranged on the upper part of the aerobic granular sludge generating mechanism, so that the sewage entering the O pool can enter the interior of the aerobic granular sludge generating mechanism through the water inlet. The clear liquid discharge component has a water inlet end located inside the aerobic granular sludge generating mechanism and a drainage end extending to the outside of the O pool. The water inlet end is located above the water inlet, so that the clear liquid inside the aerobic granular sludge generating mechanism can be discharged through the clear liquid discharge component; the reflux component includes a first reflux pipe located in the O pool and connected to the aerobic granular sludge generating mechanism, and a second reflux pipe connected to the aerobic granular sludge generating mechanism and extending to the A pool. The connection position of the first reflux pipe and the aerobic granular sludge generating mechanism is located above the connection position of the second reflux pipe and the aerobic granular sludge generating mechanism. The continuous flow aerobic granular sludge treatment device in the present application adopts a radial flow method to avoid the flow blind area of ​​the sewage, so that the water flow velocity of the sewage is more uniform, the aerobic granular sludge is more dispersed, and the aerobic efficiency is higher. Aerobic granular sludge is transported to different aerobic zones of pool A and pool O for reaction according to particle size, which promotes the rapid growth of aerobic granular sludge and improves the denitrification capacity of the continuous flow aerobic granular sludge treatment device.

[0037] 2. The first return pipe in the present application has a first liquid outlet, which is located at the upper part of the O tank and faces upward, thereby increasing the flow path of the aerobic granular sludge entering the O tank through the first return pipe in the O tank, so as to further make the aerobic granular sludge fully contact with oxygen, thereby greatly improving the utilization rate of oxygen; at the same time, the sinking aerobic granular sludge forms a greater friction with the sewage going up, which is beneficial to the formation and proliferation of aerobic granular sludge, thereby further improving the treatment effect of sewage; the second return pipe has a second liquid outlet, which is located at the upper part of the A tank and faces upward, thereby increasing the flow path of the aerobic granular sludge entering the A tank through the second return pipe in the A tank, thereby further improving the denitrification removal of COD and N-NH 4 effect, and at the same time improve the secondary decomposition of aerobic granular sludge to form nuclei, so as to further increase the amount of aerobic granular sludge, thereby further improving the sewage treatment effect.

[0038] 3. The O pool in the present application has an inner area close to the A pool and an outer area away from the A pool. The first reflux pipe includes a first connecting section and a first liquid outlet section. The first connecting section is connected to the aerobic granular sludge generating mechanism. The first liquid outlet section is located in the inner area, thereby increasing the distance between the first liquid outlet section and the water inlet to ensure the flow path of the aerobic granular sludge flowing out through the first liquid outlet section in the O pool, and avoiding the aerobic granular sludge flowing out through the first liquid outlet section directly entering the aerobic granular sludge generating mechanism through the water inlet under the action of the upward flowing aerobic granular sludge, thereby ensuring the proliferation effect of the aerobic granular sludge, so as to improve the treatment effect of the sewage. In addition, it can also avoid the occurrence of a flow blind area in the O pool to ensure the growth efficiency of the aerobic granular sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0040] Figure 1 This is a schematic structural diagram of a continuous flow aerobic granular sludge treatment device according to one embodiment of the present application;

[0041] Figure 2 This is a schematic structural diagram of another perspective of the continuous flow aerobic granular sludge treatment device according to one embodiment of the present application, wherein the dotted arrow in the figure indicates the flow direction of the sewage;

[0042] Figure 3 It is a structural schematic diagram of the aerobic granular sludge producing mechanism described in one implementation mode of the present application.

[0043] Reference numerals:

[0044] 1. A tank; 2. O tank; 3. aerobic granular sludge generating mechanism; 31. sludge screener; 4. clear liquid discharge assembly; 41. outlet tank body; 42. outlet pipe; 5. reflux assembly; 51. first reflux pipe; 52. second reflux pipe; 6. inlet pipe. DETAILED DESCRIPTION

[0045] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0046] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0047] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0048] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] In the present application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0050] Reference Figures 1 to 3 , discloses a continuous flow aerobic granular sludge treatment device, which includes an A pool 1, an O pool 2, an aerobic granular sludge generating mechanism 3, a clear liquid discharge component 4 and a reflux component 5, wherein the A pool 1 constitutes an anaerobic pool; the O pool 2 constitutes an aerobic pool, the O pool 2 is arranged outside the A pool 1 and extends along the circumference of the A pool 1, the bottom of the O pool 2 is connected with the bottom of the A pool 1, so that the sewage entering the A pool 1 enters the O pool 2 through the bottom of the A pool 1; the aerobic granular sludge generating mechanism 3 is used to generate aerobic granular sludge and is arranged inside the O pool 2 and located at the outer edge of the O pool 2, and the upper part of the aerobic granular sludge generating mechanism 3 is provided with a water inlet, so that the sewage entering the O pool 2 can pass through the water inlet Enter the interior of the aerobic granular sludge generating mechanism 3; the clear liquid discharge component 4 has a water inlet end located inside the aerobic granular sludge generating mechanism 3 and a discharge end extending to the outside of the O tank 2, and the water inlet end is located above the water inlet, so that the clear liquid inside the aerobic granular sludge generating mechanism 3 can be discharged through the clear liquid discharge component 4; the reflux component 5 includes a first reflux pipe 51 located in the O tank 2 and connected to the aerobic granular sludge generating mechanism 3 and a second reflux pipe 52 connected to the aerobic granular sludge generating mechanism 3 and extending to the A tank 1, and the connecting position of the first reflux pipe 51 and the aerobic granular sludge generating mechanism 3 is located above the connecting position of the second reflux pipe 52 and the aerobic granular sludge generating mechanism 3.

[0051] Specifically, when the continuous flow aerobic granular sludge treatment device of the present application is used, the sewage enters the A pool 1, and after the sewage entering the A pool 1 is fully mixed with the aerobic granular sludge, it enters the O pool 2 through the bottom of the A pool 1, and the sewage entering the O pool 2 enters the aerobic granular sludge generating mechanism 3 through the water inlet after aerobic treatment. The larger particles entering the aerobic granular sludge generating mechanism 3 are precipitated to the bottom of the aerobic granular sludge generating mechanism 3, while the smaller particles are precipitated in the middle and upper part of the aerobic granular sludge generating mechanism 3, and then the smaller particles enter the O pool 2 through the first return pipe 51, so that the granular sludge proliferates rapidly in the O pool 2; the larger particles enter the A pool 1 through the second return pipe 52 for denitrification to remove COD and N-NH in the sewage. 4 , and part of the granular sludge undergoes secondary decomposition to form nuclei, thereby increasing the amount of aerobic granular sludge to improve the sewage treatment effect; the supernatant of the aerobic granular sludge generating mechanism 3 enters the subsequent sewage treatment unit through the supernatant discharge component 4.

[0052] Since the O pool 2 in the application is arranged around the A pool 1, the area occupied by the continuous flow aerobic granular sludge treatment device is greatly reduced, and the sewage enters the O pool 2 from the bottom and enters the interior of the aerobic granular sludge generating mechanism 3 from the top, thereby increasing the flow path of the sewage, which is beneficial to the full contact between the aerobic granular sludge and oxygen, greatly improving the utilization rate of oxygen, so that the capacity of the O pool 2 can be reduced to further reduce the construction cost, and at the same time reduce the aerobic air volume, so that the fan power required for the continuous flow aerobic granular sludge treatment device is reduced, thereby reducing the equipment investment cost and operating cost.

[0053] In addition, the continuous flow aerobic granular sludge treatment device in the present application adopts a radial flow method to avoid the flow blind area of ​​sewage, making the flow velocity of sewage more uniform, the aerobic granular sludge more dispersed, and the aerobic efficiency higher. The aerobic granular sludge is transported to different aerobic zones of pool A 1 and pool O 2 according to the particle size for reaction, which promotes the rapid growth of aerobic granular sludge and improves the denitrification capacity of the continuous flow aerobic granular sludge treatment device.

[0054] Better, refer to Figure 1 , Pool A 1 and Pool O 2 share the pool wall to reduce the cost of the continuous aerobic granular sludge treatment device.

[0055] In a preferred embodiment, referring to Figure 2 The first return pipe 51 has a first liquid outlet, which is located at the upper part of the O tank 2 and is arranged to face upward, thereby increasing the flow path of the aerobic granular sludge entering the O tank 2 through the first return pipe 51 in the O tank 2, so as to further make the aerobic granular sludge fully contact with oxygen, so as to greatly improve the utilization rate of oxygen; at the same time, the sinking aerobic granular sludge forms a greater friction with the upward sewage, which is conducive to the formation and proliferation of aerobic granular sludge, so as to further improve the treatment effect of sewage.

[0056] In a preferred embodiment, referring to Figure 2 The second return pipe 52 has a second liquid outlet, which is located at the upper part of the A tank 1 and is arranged upward, thereby increasing the flow path of the aerobic granular sludge entering the A tank 1 through the second return pipe 52 in the A tank 1, so as to further improve the denitrification removal of COD and N-NH 4 effect, and at the same time improve the secondary decomposition of aerobic granular sludge to form nuclei, so as to further increase the amount of aerobic granular sludge, thereby further improving the sewage treatment effect.

[0057] In a preferred embodiment, referring to Figure 2The O pool 2 has an inner area close to the A pool 1 and an outer area away from the A pool 1. The first reflux pipe 51 includes a first connecting section and a first liquid outlet section. The first connecting section is connected to the aerobic granular sludge generating mechanism 3. The first liquid outlet section is located in the inner area, thereby increasing the distance between the first liquid outlet section and the water inlet to ensure the flow path of the aerobic granular sludge flowing out through the first liquid outlet section in the O pool 2, and avoiding the aerobic granular sludge flowing out through the first liquid outlet section directly entering the aerobic granular sludge generating mechanism 3 through the water inlet under the action of the aerobic granular sludge flowing upward, thereby ensuring the proliferation effect of the aerobic granular sludge, so as to improve the treatment effect of the sewage. In addition, it can also avoid the occurrence of a flow blind area in the O pool 2 to ensure the growth efficiency of the aerobic granular sludge.

[0058] It can be understood that the end of the first liquid outlet section forms the first liquid outlet.

[0059] Preferably, the first liquid outlet section is extended upward in the vertical direction so that the first liquid outlet is oriented away from the bottom of the O pool 2.

[0060] In a preferred embodiment, referring to Figure 2 Pool A 1 has a central area and a side area surrounding the central area. The second reflux pipe 52 includes a second connecting section and a second liquid outlet section. The second connecting section is connected to the aerobic granular sludge generating mechanism 3 and extends into pool A 1. The second liquid outlet section is located in the side area.

[0061] Specifically, the sewage in pool A 1 flows obliquely from the central area toward the side area, which may result in a flow blind area above the side area. The second liquid outlet section is arranged at the side area so that the sewage above the side area can flow, thereby avoiding the occurrence of a flow blind area in the side area, thereby improving the denitrification removal of COD and N-NH 4 effect, while improving the secondary decomposition of aerobic granular sludge to form nuclei.

[0062] It can be understood that the end of the second liquid outlet section forms a second liquid outlet, and the second connecting section is located at the bottom of the first connecting section, so that the connecting position of the first return pipe 51 and the aerobic granular sludge producing mechanism 3 is located above the connecting position of the second return pipe 52 and the aerobic granular sludge producing mechanism 3.

[0063] Preferably, the second liquid outlet section is extended upward in the vertical direction so that the second liquid outlet is oriented away from the bottom of pool A 1 .

[0064] The present application does not specifically limit the structure of the clear liquid discharge assembly 4. Preferably, refer to Figures 1 to 3The clear liquid discharge assembly 4 includes a water outlet tank body 41 disposed inside the aerobic granular sludge generating mechanism 3 and a water outlet pipe 42 connected to the water outlet tank body 41 , and the water outlet pipe 42 extends to the outside of the O tank 2 .

[0065] Specifically, the supernatant above the aerobic granular sludge generating mechanism 3 enters the water outlet tank body 41 , and the supernatant entering the water outlet tank body 41 enters the subsequent sewage treatment unit through the water outlet pipe 42 to discharge the supernatant.

[0066] Further, see Figure 2 The water inlet is arranged on the side of the aerobic granular sludge producing mechanism 3 close to the A tank 1, and the water outlet trough body 41 is located on the side of the aerobic granular sludge producing mechanism 3 away from the A tank 1, thereby increasing the distance between the water inlet and the water outlet trough body 41, so as to minimize the influence of the sewage entering the aerobic granular sludge producing mechanism 3 through the water inlet on the supernatant, so as to avoid the sewage from being discharged from the aerobic granular sludge producing mechanism 3 through the water outlet trough body 41, thereby improving the treatment effect of the sewage.

[0067] Further, see Figure 1 A plurality of aerobic granular sludge generating mechanisms 3 are arranged along the circumference of the O tank 2, thereby improving the efficiency of generating aerobic granular sludge and improving the efficiency of sewage treatment. The water outlet trough body 41 is extended along the circumference of the O tank 2 to penetrate the plurality of aerobic granular sludge generating mechanisms 3, so that the plurality of aerobic granular sludge generating mechanisms 3 share one water outlet trough body 41, so as to reduce the number of water outlet pipes 42, thereby reducing the cost of the continuous flow aerobic granular sludge treatment device, and at the same time increasing the stability of the water outlet trough body 41.

[0068] Furthermore, the top of the water outlet trough body 41 is open to form a clear liquid inlet of the water outlet trough body 41, and the top of the water outlet trough body 41 is slidably connected with a floating resistance structure that can float up and down following the liquid surface, so that the floating resistance structure can block the particles in the aerobic granular sludge producing mechanism 3 to prevent the particles inside the aerobic granular sludge producing mechanism 3 from entering the water outlet trough body 41 through the clear liquid inlet, thereby improving the sewage treatment effect.

[0069] The present application does not specifically limit the floating resistance structure. Preferably, the floating resistance structure is a wall structure made of foam material, so that the floating resistance structure can float up and down following the change of the liquid level inside the aerobic granular sludge generating mechanism 3, so as to block the particles and prevent the particles from following the supernatant into the water outlet tank body 41. In other implementation examples, the floating resistance structure can also be a wall structure made of other low-density materials.

[0070] In other embodiments, the clear liquid discharge component 4 may also eliminate the water outlet tank 41 , that is, the clear liquid discharge component 4 only includes the water outlet pipe 42 , so that the supernatant is directly discharged through the water outlet pipe 42 .

[0071] In a preferred embodiment, referring to Figure 3 The aerobic granular sludge generating mechanism 3 is provided with a sludge screener 31, and the first return pipe 51 and the second return pipe 52 are both connected to the sludge screener 31, thereby avoiding the situation where the aerobic granular sludge particle size is too large and the interior is hollow and floats and loses, while ensuring the particle size uniformity of the aerobic granular sludge, and accelerating the growth rate of the aerobic granular sludge, thereby improving the treatment effect of sewage.

[0072] In a preferred embodiment, referring to Figure 1 and Figure 2 The continuous flow aerobic granular sludge treatment device also includes an inlet pipe 6, which is located above the A pool 1 and the O pool 2, and the outlet end of the inlet pipe 6 is located directly above the A pool 1, thereby enabling the sewage to enter the A pool 1 from the top of the A pool 1, thereby increasing the flow path of the sewage, improving the full contact between the aerobic granular sludge and the sewage, and improving the treatment effect of the sewage.

[0073] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0074] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0075] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A continuous flow aerobic granular sludge treatment device, characterized in that: include: Tank A (1), wherein Tank A (1) constitutes an anaerobic tank; An O pool (2), the O pool (2) constituting an aerobic pool, the O pool (2) being arranged outside the A pool (1) and extending along the circumference of the A pool (1), the bottom of the O pool (2) being connected to the bottom of the A pool (1), so that sewage entering the A pool (1) enters the O pool (2) via the bottom of the A pool (1); an aerobic granular sludge generating mechanism (3), the aerobic granular sludge generating mechanism (3) being used to generate aerobic granular sludge and being arranged inside the O tank (2) and located at the outer edge of the O tank (2), the upper portion of the aerobic granular sludge generating mechanism (3) being provided with a water inlet so that sewage entering the O tank (2) can enter the interior of the aerobic granular sludge generating mechanism (3) through the water inlet; a clear liquid discharge component (4), the clear liquid discharge component (4) comprising a water inlet end located inside the aerobic granular sludge generating mechanism (3) and a water discharge end extending to the outside of the O tank (2), the water inlet end being located above the water inlet so that the clear liquid inside the aerobic granular sludge generating mechanism (3) is discharged through the clear liquid discharge component (4); A return assembly (5), the return assembly (5) comprising a first return pipe (51) located in the O tank (2) and connected to the aerobic granular sludge generating mechanism (3), and a second return pipe (52) connected to the aerobic granular sludge generating mechanism (3) and extending into the A tank (1), wherein a connection position between the first return pipe (51) and the aerobic granular sludge generating mechanism (3) is located above a connection position between the second return pipe (52) and the aerobic granular sludge generating mechanism (3); The clear liquid discharge assembly (4) comprises a water outlet tank body (41) disposed inside the aerobic granular sludge generating mechanism (3) and a water outlet pipe (42) connected to the water outlet tank body (41), wherein the water outlet pipe (42) extends to the outside of the O tank (2); The top of the water outlet trough body (41) is open to form a clear liquid inlet of the water outlet trough body (41), and the top of the water outlet trough body (41) is slidably connected to a floating resistance structure capable of floating up and down following the liquid surface, and the floating resistance structure can block the particles in the aerobic granular sludge generating mechanism (3) to prevent the particles inside the aerobic granular sludge generating mechanism (3) from entering the water outlet trough body (41) through the clear liquid inlet.

2. A continuous flow aerobic granular sludge treatment device according to claim 1, characterized in that: The first reflux pipe (51) has a first liquid outlet, the first liquid outlet is located at the upper part of the O pool (2) and faces upward; And / or, the second reflux pipe (52) has a second liquid outlet, and the second liquid outlet is located at the upper part of the A tank (1) and faces upward.

3. The continuous flow aerobic granular sludge treatment device according to claim 1, characterized in that: The O tank (2) has an inner area close to the A tank (1) and an outer area away from the A tank (1); the first reflux pipe (51) comprises a first connecting section and a first liquid outlet section; the first connecting section is connected to the aerobic granular sludge generating mechanism (3); and the first liquid outlet section is located in the inner area.

4. The continuous flow aerobic granular sludge treatment device according to claim 1, characterized in that: The A tank (1) has a central area and a side area surrounding the central area. The second reflux pipe (52) comprises a second connecting section and a second liquid outlet section. The second connecting section is connected to the aerobic granular sludge generating mechanism (3) and extends into the A tank (1). The second liquid outlet section is located in the side area.

5. The continuous flow aerobic granular sludge treatment device according to claim 1, characterized in that: The water inlet is arranged on a side of the aerobic granular sludge generating mechanism (3) close to the A tank (1), and the water outlet tank body (41) is located on a side of the aerobic granular sludge generating mechanism (3) away from the A tank (1).

6. The continuous flow aerobic granular sludge treatment device according to claim 1, characterized in that: A plurality of aerobic granular sludge generating mechanisms (3) are arranged along the circumference of the O tank (2), and the water outlet tank body (41) is extended along the circumference of the O tank (2) to penetrate the plurality of aerobic granular sludge generating mechanisms (3).

7. The continuous flow aerobic granular sludge treatment device according to claim 1, characterized in that: The aerobic granular sludge generating mechanism (3) is provided with a sludge screener (31), and the first return pipe (51) and the second return pipe (52) are both connected to the sludge screener (31).

8. The continuous flow aerobic granular sludge treatment device according to claim 1, characterized in that: It also comprises a water inlet pipe (6), the water inlet pipe (6) being located above the A pool (1) and the O pool (2), and the water outlet end of the water inlet pipe (6) being located directly above the A pool (1).

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