Continuous flow aerobic granular sludge self-reflux reactor and method thereof

Abstract

The invention relates to the technical field of sewage treatment, in particular to a continuous flow aerobic granular sludge self-reflux reactor and a method thereof. Comprising a supporting part and a blocking part, the supporting part is used for supporting the blocking part and preventing water flow from dispersing, and the blocking part is located on the inner side of the supporting part and used for removing pollutants; the separating part comprises a separating plate which is fixed on the inner side of the supporting part and is used for separating the supporting part into a first cavity and a second cavity; the water flow through hole is located in one end of the partition plate and used for allowing water in the first cavity to enter the second cavity through the water flow through hole; the backflow hole is located in the other end of the partition plate. According to the continuous flow aerobic granular sludge self-reflux reactor and the method thereof provided by the invention, the settling zone, the aerobic zone and the anoxic zone can be combined through the supporting part and the blocking part, and water can be continuously fed and discharged in a self-reflux mode, so that the occupied area is saved, and the operation mode is flexible and simple.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and particularly relates to a continuous flow aerobic granular sludge self - reflux reactor and a method thereof. Background Art

[0002] At present, most sewage treatment plants use continuous flow sewage treatment processes, but the research on aerobic granular sludge technology based on continuous flow sewage treatment processes is insufficient.

[0003] The existing continuous flow aerobic granular sludge reactors have the following technical limitations:

[0004] (1) In the prior art, most are multiple reactors operating in series or separating the aeration zone from the sedimentation zone, which have a large floor area and high costs.

[0005] (2) In the prior art, there is insufficient research on how to construct an aerobic granular sludge reactor on the basis of existing continuous flow sewage treatment process structures.

[0006] (3) In the prior art, there is insufficient research on cultivating stable aerobic granular sludge in reactors. Most of the aerobic granular sludge cultivated in reactors is prone to disintegration and cannot meet the requirements of stable, synchronous and efficient nitrogen and phosphorus removal.

[0007] Therefore, a continuous flow aerobic granular sludge self - reflux reactor and a method thereof are designed to provide another technical solution to solve the above - mentioned technical problems. Summary of the Invention

[0008] Based on this, it is necessary to provide a continuous flow aerobic granular sludge self - reflux reactor and a method thereof for solving the technical problems raised in the above - mentioned background art.

[0009] In order to solve the above - mentioned technical problems, the present invention adopts the following technical solutions:

[0010] A continuous flow aerobic granular sludge self - reflux reactor includes a support part and a barrier part. The support part is used to support the barrier part to prevent the water flow from dispersing. The barrier part is located inside the support part and is used for removing pollutants.

[0011] The barrier part includes:

[0012] A partition plate, which is fixed inside the support part and is used to divide the support part into a first cavity and a second cavity;

[0013] A water flow through - hole, which is located inside one end of the partition plate and is used to allow the water inside the first cavity to enter the second cavity through the water flow through - hole;

[0014] The reflux hole is located inside the other end of the partition plate and at the top of the water flow hole, and is used to allow the water inside the second cavity to flow back into the first cavity through the reflux hole;

[0015] The first flow disturbing component is located inside the first cavity and is used to disturb the influent water entering through the influent pipe;

[0016] The second flow disturbing component is located inside the second cavity and is used to disturb the water entering the second cavity.

[0017] As a preferred embodiment of the continuous flow aerobic granular sludge self-reflux reactor provided by the present invention, the supporting part includes a bottom plate, a first blocking plate and a second blocking plate. Second blocking plates are fixed at both ends of the top of the bottom plate, and first blocking plates are fixed on both sides of the top of the bottom plate. The first blocking plate is fixed to the second blocking plate.

[0018] As a preferred embodiment of the continuous flow aerobic granular sludge self-reflux reactor provided by the present invention, an influent pipe and an effluent pipe are respectively fixed on both sides inside one end of the second blocking plate.

[0019] As a preferred embodiment of the continuous flow aerobic granular sludge self-reflux reactor provided by the present invention, the first flow disturbing component includes a flow disturbing member, a third partition plate and a fourth partition plate. The fourth partition plate is fixed at the top of one side of the partition plate, the third partition plate is fixed at the top of one side of the partition plate and at one end of the fourth partition plate, and the flow disturbing member is installed at one end of the third partition plate away from the fourth partition plate on one side of the partition plate.

[0020] As a preferred embodiment of the continuous flow aerobic granular sludge self-reflux reactor provided by the present invention, the flow disturbing member includes a first partition plate and a second partition plate. The first partition plate is fixed at the top of one side of the partition plate, and the first partition plate is located at one end of the reflux hole close to the influent pipe. The second partition plate is fixed at one end of the first partition plate at the bottom of one side of the partition plate.

[0021] As a preferred embodiment of the continuous flow aerobic granular sludge self-reflux reactor provided by the present invention, an aerobic zone is formed between the third partition plate and the first partition plate inside the first cavity, and an anoxic zone is formed at one end of the first partition plate away from the third partition plate inside the first cavity.

[0022] As a preferred embodiment of the continuous-flow aerobic granular sludge self-return reactor provided by the present invention, the second flow-disturbing assembly includes a fifth partition plate, a sedimentation plate, and a sixth partition plate. The fifth partition plate and the sixth partition plate are respectively fixed at both ends of the reflux hole at the top of the other side of the partition plate. The sixth partition plate is located at one end of the fifth partition plate away from the flow-through groove. The sedimentation plate is inclined and fixed at the bottom of one side of the partition plate and at the bottom end of the fifth partition plate.

[0023] As a preferred embodiment of the continuous-flow aerobic granular sludge self-return reactor provided by the present invention, a flow-through groove is formed at the top end inside the fifth partition plate.

[0024] As a preferred embodiment of the continuous-flow aerobic granular sludge self-return reactor provided by the present invention, an aerobic zone is formed inside the second cavity between the fifth partition plate and the partition plate, an anoxic zone is formed at one end of the second cavity away from the fifth partition plate and inside the sixth partition plate, and a sedimentation zone is formed at one end of the second cavity away from the sixth partition plate and inside the fifth partition plate.

[0025] A method for using a continuous-flow aerobic granular sludge self-return reactor, which is used for any one of the above, comprises the following steps:

[0026] S1: Feed water enters the inside of the first cavity through the flow-through groove, and turbulences are formed by the first partition plate, the second partition plate, the third partition plate, and the fourth partition plate.

[0027] S2: The water flowing through the bottom of the fourth partition plate enters the inside of the second cavity through the water flow-through hole, and turbulences are formed by the sixth partition plate and the fifth partition plate.

[0028] S3: Through the sedimentation plate, the granular sediment in the water flow in the sedimentation zone inside the second cavity settles by its own weight and flows into the aerobic zone in the second cavity.

[0029] S4: Control aeration in the aerobic zone inside the second cavity, and realize the liquid level reflux between the second cavity and the first cavity through the reflux hole.

[0030] It can be seen without doubt that through the above technical solutions of the present application, the technical problems to be solved by the present application can surely be solved.

[0031] Meanwhile, through the above technical solutions, the present invention has at least the following beneficial effects:

[0032] A continuous-flow aerobic granular sludge self-recirculation reactor and method provided by the present invention can combine a sedimentation zone, an aerobic zone, and an anoxic zone through a support part and a barrier part, and can continuously inlet and outlet water through the self-recirculation method, thereby saving land, having a flexible and simple operation mode, and low investment cost; it conforms to the operation mode of an actual sewage treatment plant and is convenient for transformation; the sewage treatment effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0035] Figure 2 It is a side view of the present invention;

[0036] Figure 3 It is a schematic diagram of the structure of the second partition board of the present invention;

[0037] Figure 4 It is a schematic diagram of the structure of the sedimentation plate of the present invention;

[0038] Figure 5 It is the first schematic diagram of the pollutant removal performance of the present invention;

[0039] Figure 6 It is the second schematic diagram of the pollutant removal performance of the present invention;

[0040] Figure 7 It is the third schematic diagram of the pollutant removal performance of the present invention;

[0041] Figure 8 It is the fourth schematic diagram of the pollutant removal performance of the present invention;

[0042] Figure 9 It is a particle size diagram of the present invention;

[0043] Figure 10 It is a particle diagram of the present invention on the 1st day;

[0044] Figure 11 It is a particle diagram of the present invention on the 86th day;

[0045] Figure 12 It is a particle diagram of the present invention on the 160th day.

[0046] In the figure: 1, bottom plate; 2, first baffle plate; 3, second baffle plate; 4, water inlet pipe; 5, water outlet pipe; 6, partition plate; 7, water flow hole; 8, return hole; 9, first partition board; 10, second partition board; 11, third partition board; 12, fourth partition board; 13, fifth partition board; 14, flow channel; 15, sedimentation plate; 16, sixth partition board. Specific implementation mode

[0047] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0048] In order to enable those skilled in the art of this technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0049] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments can be combined with each other.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0051] Embodiment 1

[0052] Refer to Figures 1-4 , a continuous flow aerobic granular sludge self-return reactor, comprising a support part and a barrier part. The support part is used to support the barrier part to prevent water flow from dispersing. The barrier part is located inside the support part and is used for removing pollutants;

[0053] The support part includes a bottom plate 1, a first baffle plate 2 and a second baffle plate 3. Both ends of the top of the bottom plate 1 are fixed with a second baffle plate 3, and both sides of the top of the bottom plate 1 are fixed with a first baffle plate 2. The first baffle plate 2 is fixed to the second baffle plate 3, so that the sludge mixture can flow inside the support part composed of the bottom plate 1, the first baffle plate 2 and the second baffle plate 3. On both sides inside one end of the second baffle plate 3, a water inlet pipe 4 and a water outlet pipe 5 are respectively fixed. Thus, water enters the inside of the support part through the water inlet pipe 4 and is discharged through the water outlet pipe 5 after flowing through;

[0054] In this embodiment, a water pump is fixed at one end of the water inlet pipe 4 away from the second baffle plate 3, and the input end of the water pump is located in the water inlet bucket, so that water can be input into the inside of the support part through the water pump and the water inlet pipe 4.

[0055] The barrier part includes:

[0056] The partition plate 6 is fixed inside the support part and is used to divide the support part into a first cavity and a second cavity;

[0057] The water flow through hole 7 is located inside one end of the partition plate 6 and is used to allow the water inside the first cavity to enter the second cavity through the water flow through hole 7;

[0058] The return hole 8 is located inside the other end of the partition plate 6 and on top of the water flow through hole 7, and is used to allow the water inside the second cavity to return to the first cavity through the return hole 8;

[0059] The first flow disturbing assembly is located inside the first cavity and is used to disturb the incoming water entering through the water inlet pipe 4;

[0060] The first flow disturbing assembly includes a flow disturbing member, a third partition plate 11 and a fourth partition plate 12. The fourth partition plate 12 is fixed to the top of one side of the partition plate 6, and the third partition plate 11 is fixed to the top of one side of the partition plate 6 and at one end of the fourth partition plate 12, so that the water can only enter the second cavity through the water flow through hole 7 after flowing through the bottoms of the third partition plate 11 and the fourth partition plate 12. A flow disturbing member is installed at one side of the partition plate 6 and at the end of the third partition plate 11 away from the fourth partition plate 12, so that the water entering the first cavity through the water inlet pipe 4 can flow through the bottom of the third partition plate 11 after being disturbed by the flow disturbing member;

[0061] The flow disturbing member includes a first partition plate 9 and a second partition plate 10. The first partition plate 9 is fixed to the top of one side of the partition plate 6, and the first partition plate 9 is located at one end of the return hole 8 close to the water inlet pipe 4, so that the water entering through the water inlet pipe 4 can only flow through the gap between the bottom of the first partition plate 9 and the bottom plate 1. The second partition plate 10 is fixed to the bottom of one side of the partition plate 6 and at one end of the first partition plate 9, so that the water flowing through the bottom of the first partition plate 9 can only continue to flow through the top of the second partition plate 10;

[0062] Preferably, an aerobic zone is formed between the third partition plate 11 and the first partition plate 9 inside the first cavity, and an anoxic zone is formed at one end of the first partition plate 9 away from the third partition plate 11 inside the first cavity.

[0063] In this embodiment, the number of the flow disturbing members is two groups. In other embodiments, it can be set according to needs, so that the water flow can be made smooth through the disturbance of the flow disturbing members.

[0064] The second flow disturbing assembly is located inside the second cavity and is used to disturb the water entering the second cavity.

[0065] The second spoiler assembly includes a fifth partition plate 13, a sedimentation plate 15 and a sixth partition plate 16. The fifth partition plate 13 and the sixth partition plate 16 are respectively fixed at both ends of the reflux hole 8 at the top on the other side of the partition plate 6. The sixth partition plate 16 is located at one end of the fifth partition plate 13 away from the flow-through groove 14. Thus, after water flows through the water flow through-hole 7 into the interior of the second cavity, it enters between the fifth partition plate 13 and the sixth partition plate 16 through the bottom of the sixth partition plate 16. When the water level is relatively high, it flows back into the interior of the first cavity through the reflux hole 8. A flow-through groove 14 is formed at the top end inside the fifth partition plate 13. The bottom end of the flow-through groove 14 is located at the bottom of the reflux hole 8, and the top end of the flow-through groove 14 is located at the top of the reflux hole 8. A sedimentation plate 15 is obliquely fixed at the bottom on one side of the partition plate 6 and at the bottom end of the fifth partition plate 13, which can allow the sludge to precipitate by its own weight and the inclination of the sedimentation plate 15.

[0066] Preferably, an aerobic zone is formed between the fifth partition plate 13 and the partition plate 6 inside the second cavity, an anoxic zone is formed at one end of the sixth partition plate 16 away from the fifth partition plate 13 inside the second cavity, and a sedimentation zone is formed at one end of the fifth partition plate 13 away from the sixth partition plate 16 inside the second cavity.

[0067] In this embodiment, it further includes an existing timing control system, so that the aeration time can be automatically controlled through the timing control system.

[0068] The usage process of a continuous flow aerobic granular sludge self-reflux reactor and its method provided by the present invention is as follows: When in use, let the influent enter the interior of the first cavity through the influent pipeline 4, and then let the water flow through the spoilers of the first partition plate 9, the second partition plate 10, the third partition plate 11 and the fourth partition plate 12, and then flow into the interior of the second cavity through the water flow through-hole 7. Inside the second cavity, due to the liquid level difference, it enters the aerobic zone inside the second cavity through the bottom of the sixth partition plate 16, and let the water flow through the flow-through groove 14 and the bottom of the fifth partition plate 13 into the sedimentation zone. At the same time, let the sludge, inside the sedimentation zone, sink downward due to its own weight, and the larger particles precipitate and flow back to the aerobic zone inside the second cavity through the inclination of the sedimentation plate 15. At the same time, due to the bubbles generated by the aeration rising in the aerobic zone inside the second cavity causing the liquid level to rise. At this time, the liquid level difference between the aerobic zone and the anoxic zone inside the first cavity promotes the self-reflux of the sludge, making it flow back to the anoxic zone inside the first cavity. At the same time, the liquid level in the aerobic zone chambers in the first cavity also rises due to the bubbles generated by the aeration rising, and thus, between it and the second cavity, the self-circulation of the sludge is promoted through the liquid level difference, forming an internal circulation of granular sludge. Furthermore, a differential pressure drive system is adopted to avoid the damage of the peristaltic pump to AGS, and the post-positioned anoxic tank and aerobic tank improve the removal efficiency of pollutants.

[0069] Embodiment 2

[0070] On the basis of the above-mentioned First Embodiment, its usage method is disclosed as follows:

[0071] S1: Let the influent enter the interior of the first cavity through the flow-through groove 14, and form a turbulent flow through the first partition 9, the second partition 10, the third partition 11 and the fourth partition 12;

[0072] S2: The water flow flowing through the bottom of the fourth partition 12 enters the interior of the second cavity through the water flow through-hole 7, and forms a turbulent flow through the sixth partition 16 and the fifth partition 13;

[0073] S3: Through the sedimentation plate 15, the particulate sediment in the water flow in the sedimentation area inside the second cavity precipitates by its own weight and flows into the aerobic area in the second cavity;

[0074] S4: Control the aeration in the aerobic area inside the second cavity, and realize the liquid level reflux between the second cavity and the first cavity through the reflux hole 8.

[0075] Third Embodiment

[0076] Reference Figures 5-12 , on the basis of the above-mentioned Second Embodiment, the usage performance of the continuous-flow aerobic granular sludge self-reflux reactor is disclosed.

[0077] Aerobic granular sludge: Aerobic granular sludge has been successfully cultivated, and aerobic granular sludge with a size greater than 200 μm accounts for 68%.

[0078] Pollutant removal performance:

[0079] Reference Figure 5 , on the first day, the COD removal rate was 55.95%, and it gradually increased. On the 30th day, it increased to 90.96%. After the 30th day, it tended to be stable, and the removal rate remained between 90% and 93%.

[0080] Reference Figure 6 , on the first day, the NH4 + -N removal rate was 41.29%, and it gradually increased. On the 54th day, it increased to about 90.80%. After the 54th day, it tended to be stable, and the removal rate remained between 90% and 96%.

[0081] Reference Figure 7 , on the first day, the TN removal rate was 34.41%, and it gradually increased. On the 54th day, it increased to about 77.07%. After the 54th day, it tended to be stable, and the removal rate remained between 77% and 82%.

[0082] Reference Figure 8 , on the first day, the TP removal rate was 36.79%, and it gradually increased. On the 48th day, it increased to about 90.13%. After the 48th day, it tended to be stable, and the removal rate remained between 92% and 96%.

[0083] Reference Figure 9 discloses a continuous-flow aerobic granular sludge self-recirculation reactor, showing the particle size ratio during use.

[0084] Reference Figures 10-12 discloses the continuous-flow aerobic granular sludge self-recirculation reactor of the present invention, showing schematic diagrams of the particles on the 1st day, the 86th day, and the 160th day during use.

[0085] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A continuous flow aerobic granular sludge self-recirculation reactor, characterized in that: It comprises a supporting part and a blocking part, wherein the supporting part is used to support the blocking part to prevent the water flow from dispersing, and the blocking part is located inside the supporting part and is used to remove pollutants; The barrier portion comprises: A partition plate (6) is located and fixed on the inner side of the support portion, and is used to separate the support portion into a first cavity and a second cavity; A water flow hole (7) is located inside one end of the partition plate (6) and is used to allow water inside the first cavity to pass through the water flow hole (7) and enter the second cavity; A reflux hole (8) is located inside the other end of the partition plate (6) and at the top of the water flow hole (7), and is used to allow the water inside the second cavity to flow back into the first cavity through the reflux hole (8); A first flow disturbance component, located inside the first cavity, and used to disturb the inlet water entering through the water inlet pipe (4); The second spoiler assembly is located inside the second cavity and is used for spoiling the water entering the second cavity.

2. The continuous flow aerobic granular sludge self-recirculation reactor according to claim 1, characterized in that: The support portion comprises a base plate (1), a first blocking plate (2) and a second blocking plate (3); the second blocking plates (3) are fixed to both ends of the top of the base plate (1); the first blocking plates (2) are fixed to both sides of the top of the base plate (1); and the first blocking plate (2) is fixed to the second blocking plate (3).

3. The continuous flow aerobic granular sludge self-recirculation reactor according to claim 2, characterized in that: A water inlet pipe (4) and a water outlet pipe (5) are respectively fixed on both sides of the interior of one end of the second blocking plate (3).

4. The continuous flow aerobic granular sludge self-recirculation reactor according to claim 1, characterized in that: The first spoiler assembly comprises a spoiler, a third partition (11) and a fourth partition (12); the fourth partition (12) is fixed to the top of one side of the partition (6); the third partition (11) is fixed to the top of one side of the partition (6) and at one end of the fourth partition (12); and the spoiler is installed on one side of the partition (6) and at one end of the third partition (11) away from the fourth partition (12).

5. The continuous flow aerobic granular sludge self-recirculation reactor according to claim 4, characterized in that: The spoiler comprises a first partition plate (9) and a second partition plate (10); the first partition plate (9) is fixed to the top of one side of the partition plate (6), and the first partition plate (9) is located at one end of the return hole (8) close to the water inlet pipe (4); the second partition plate (10) is fixed to the bottom of one side of the partition plate (6) and located at one end of the first partition plate (9).

6. The continuous flow aerobic granular sludge self-recirculation reactor according to claim 5, characterized in that: An aerobic zone is formed inside the first cavity and between the third partition (11) and the first partition (9), and an anoxic zone is formed inside the first cavity and at an end of the first partition (9) away from the third partition (11).

7. The continuous flow aerobic granular sludge self-recirculation reactor according to claim 1, characterized in that: The second spoiler assembly comprises a fifth baffle (13), a sedimentation plate (15) and a sixth baffle (16); the fifth baffle (13) and the sixth baffle (16) are respectively fixed at the top of the other side of the baffle (6) and at both ends of the reflux hole (8); the sixth baffle (16) is located at the end of the fifth baffle (13) away from the circulation groove (14); and the sedimentation plate (15) is obliquely fixed at the bottom of one side of the baffle (6) and at the bottom end of the fifth baffle (13).

8. The continuous flow aerobic granular sludge self-recirculation reactor according to claim 7, characterized in that: A flow groove (14) is provided at the top end of the fifth partition plate (13).

9. The continuous flow aerobic granular sludge self-recirculation reactor according to claim 7, characterized in that: An aerobic zone is formed inside the second cavity and between the fifth partition (13) and the partition plate (6), an anoxic zone is formed inside the second cavity and at one end of the sixth partition (16) away from the fifth partition (13), and a sedimentation zone is formed inside the second cavity and at one end of the fifth partition (13) away from the sixth partition (16).

10. A method for using a continuous flow aerobic granular sludge self-recirculation reactor, used for the continuous flow aerobic granular sludge self-recirculation reactor according to any one of claims 1 to 9, characterized in that: Here are the steps: S1: the influent water enters the first cavity through the circulation groove (14), and forms a turbulent flow through the first partition plate (9), the second partition plate (10), the third partition plate (11) and the fourth partition plate (12); S2: The water flowing through the bottom of the fourth partition (12) enters the second cavity through the water flow hole (7) and forms a turbulent flow through the sixth partition (16) and the fifth partition (13); S3: Through the sedimentation plate (15), the granular sediment in the water flow in the sedimentation zone inside the second cavity is allowed to settle by self-weight and flow into the aerobic zone in the second cavity; S4: Control the aeration of the aerobic zone inside the second cavity, and realize the liquid surface reflux inside the second cavity and the first cavity through the reflux hole (8).

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