Spiral-flow type anaerobic reactor

Abstract

The invention relates to a spiral-flow type anaerobic reactor which comprises a tower body and a three-phase separator, wastewater uniformly rises in the tower body and passes through the three-phase separator, bubbles with sludge in the wastewater impact guide vanes, the sludge is precipitated downwards, and due to the fact that the included angle between the blade surface of each guide vane and the horizontal plane is larger than 0, the spiral-flow type anaerobic reactor has guidance quality; water flow flows along the guide vanes to form rising rotational flow in the tower body, sludge rapidly rotates along with the water flow, and due to the action of centrifugal force, part of the sludge entering the upper layer area along the water flow gathers towards the first opening in the center of the rotational flow, is guided to enter the sludge guide part and settles into the lower layer area in the tower body to complete settling. Clear water and gas are diffused all around, rise to the upper layer area in the tower body and overflow out of the tower body through the water outlet, the flow state in the tower is in an ascending rotational flow state by arranging the mud guide part and the guide vanes, the flow speed is high, the bubble impact area is increased, and the separation effect of the three-phase separator is enhanced. When water in the anaerobic reactor overflows to the water outlet, the entrained sludge amount is small, and the working efficiency of the anaerobic reactor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of anaerobic reactors, in particular to a cyclone anaerobic reactor. Background Art

[0002] The three-phase separator used in the existing cyclone anaerobic reactor includes a folded plate guide blade, an air chamber and an exhaust port. When the three-phase separator is working, the bubbles carrying sludge hit the bottom groove body of the folded plate guide blade, causing the sludge to be degassed and settle downward, and the gas enters the top air chamber along the extension direction of the groove of the folded plate guide blade and is discharged through the exhaust port. The liquid enters the tower above the three-phase separator along the gap between the folded plate guide blades. Since the flow state in the tower is basically an upward flow state and the flow rate is slow, some bubbles carrying sludge cannot hit the groove body at the bottom of the folded plate guide blade for degassing, and thus enter the tower above the three-phase separator together with the liquid, resulting in poor separation effect of the three-phase separator. When the water in the anaerobic reactor overflows to the outlet, it carries sludge, and the working efficiency of the anaerobic reactor is low.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0004] In view of the deficiencies in the prior art, the embodiments of the present invention disclose a cyclone anaerobic reactor to solve the problems of poor separation effect of the three-phase separator, sludge entrained when the water in the anaerobic reactor overflows to the outlet, and low working efficiency of the anaerobic reactor.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The cyclone anaerobic reactor comprises a tower body and a three-phase separator, wherein the top of the tower body has a water outlet, the bottom of the tower body has a water inlet, and there are a plurality of three-phase separators, which are fixedly arranged inside the tower body. The three-phase separator is fixedly arranged inside the tower body, and the three-phase separator comprises a plurality of guide blades and a mud guide portion, wherein the mud guide portion has a first opening and a second opening, and the mud guide portion communicates an upper region with a lower region, wherein a first end of the guide blade is fixedly connected to the outside of the mud guide portion and an angle between the blade surface of the guide blade and a horizontal plane is greater than 0, and a second end of the guide blade is fixedly connected to the inner wall of the tower body, and a plurality of the guide blades are radially spaced along the outside of the mud guide portion.

[0007] A further technical solution is that the mud guide portion is a hollow frustum, the first opening is located at the top end of the mud guide portion, the second opening is located at the bottom end of the mud guide portion, and the inner diameter of the first opening is greater than the inner diameter of the second opening.

[0008] A further technical solution is that there are four three-phase separators, and the four three-phase separators divide the interior of the tower body, which is divided into a primary separation zone, a secondary separation zone, a tertiary separation zone, a quaternary separation zone and a water purification zone from bottom to top.

[0009] A further technical solution is that the three-phase separator at the top of the primary separation zone is provided with a guide pipe, and the top of the guide pipe is connected to the second opening.

[0010] A further technical solution is that a reflection cone is suspended at the bottom of the guide tube, the reflection cone is conical, and the tip of the reflection cone faces the bottom pipe opening of the guide tube.

[0011] A further technical solution is that the side of the guide pipe is connected to the return pipe, the return pipe extends out of the inner wall of the tower body and is connected to the output end of the pump body, and a suction pipe is provided in the four-stage separation area, and the second end of the suction pipe extends out of the inner wall of the tower body and is connected to the input end of the pump body.

[0012] A further technical solution is that a first end of the water suction pipe is provided with an annular pipeline, the annular pipeline is connected to the water suction pipe, and a plurality of water suction ports are opened on the inner wall surface of the annular pipeline.

[0013] A further technical solution is that a bracket is provided on the inner wall of the tower body of the fourth-stage separation zone, and the bracket is located at the bottom end of the annular pipeline and fixes the annular pipeline.

[0014] A further technical solution is that the water inlet is provided with a water distribution pipe, and the water distribution pipe is provided with a plurality of water distribution holes at intervals.

[0015] A further technical solution is that an overflow trough is provided at the top of the tower body, a plurality of overflow holes are provided at intervals on the side wall of the overflow trough, and the water outlet connects the overflow trough and the tower body.

[0016] The beneficial effects of the embodiments of the present invention are as follows:

[0017] (I) The cyclone anaerobic reactor includes a tower body and a three-phase separator. The three-phase separator is fixed inside the tower body. The three-phase separator includes a plurality of guide blades and a mud guide part. Wastewater continuously enters the tower body from the water inlet. The wastewater rises evenly in the tower body and passes through the three-phase separator. Bubbles with sludge in the wastewater hit the guide blades, causing the bubbles to burst and the sludge to settle downward. Since the angle between the blade surface of the guide blade and the horizontal plane is greater than 0, it has a guiding property. The water flows along the guide blades to form an ascending vortex in the tower body. The sludge rotates rapidly with the water flow. Since the probability of bubbles hitting the guide blades is increased in the cyclone state, the sludge gathers in the cyclone state. The center enhances the collision between the granular sludge, makes it easier to remove the bubbles in the sludge, makes the unseparated bubbles collide, separate and settle, and enhances the separation effect of the three-phase separator; at the same time, due to the action of centrifugal force, part of the sludge entering the upper area along the water flow is gathered to the first opening of the cyclone center and guided into the sludge guide part, and settles from the second opening to the lower area of ​​the tower body to complete the sedimentation, and the clean water and gas are dispersed around and rise to the upper area of ​​the tower body and overflow out of the tower body through the outlet, reducing the contact between the separated sludge and the clean water and gas. When the water in the anaerobic reactor overflows to the outlet, the amount of sludge entrained is small, thereby improving the working efficiency of the anaerobic reactor.

[0018] (ii) Furthermore, the plate surfaces of the two guide blades are partially overlapped, and the shallow sedimentation principle is applied to form a very shallow sedimentation zone between the two parallel guide blades, so that the treated water and the settled sludge move against each other and separate in the shallow sedimentation layer, shortening the sedimentation time by shortening the particle sedimentation distance, thereby improving the treatment efficiency of the three-phase separator.

[0019] (III) Furthermore, the side of the guide pipe is connected to the return pipe, and the return pipe extends out of the inner wall of the tower body to be connected to the output end of the pump body. A suction pipe is provided in the fourth-stage separation area, and the second end of the suction pipe extends out of the inner wall of the tower body to be connected to the input end of the pump body. The pump body draws liquid from the fourth-stage separation area through the suction pipe, and the liquid is output to the return pipe through the pump body. The liquid passes through the return pipe and the pipe opening at the bottom of the guide pipe in turn and enters the primary separation area. Since the liquid is drawn by the pump body, the liquid flow rate is accelerated, and the liquid enters the primary separation area from the pipe opening at the bottom of the guide pipe, which accelerates the liquid flow rate rising in the tower body, thereby further accelerating the water flow rate passing through the three-phase separator, accelerating the rotation speed of the vortex, increasing the centrifugal force of the vortex, and improving the separation effect of the three-phase separator.

[0020] (iv) Furthermore, a reflection cone is suspended at the bottom of the guide pipe. The reflection cone is conical in shape, and the tip of the reflection cone faces the bottom pipe opening of the guide pipe. After the sludge in the guide pipe flows out from the bottom pipe opening of the guide pipe, it hits the tip of the reflection cone, and the sludge is scattered along the surface of the reflection cone, so that the sludge is evenly settled in the sludge area at the bottom of the tower body, preventing the sludge from being deposited at the center point of the bottom of the tower body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the internal structure of the cyclone anaerobic reactor of the present invention.

[0022] Figure 2 It is a schematic diagram of the main structure of the three-phase separator in the cyclone anaerobic reactor of the present invention.

[0023] In the figure:

[0024] 1. Tower body; 11. Water outlet; 12. Water inlet; 13. Primary separation zone; 14. Secondary separation zone; 15. Tertiary separation zone; 16. Quaternary separation zone; 17. Water purification zone; 2. Three-phase separator; 21. Guide vane; 22. Mud guide; 23. First opening; 24. Second opening; 3. Guide pipe; 4. Reflection cone; 5. Return pipe; 6. Pump body; 7. Suction pipe; 71. Annular pipeline; 72. Bracket; 8. Water distribution pipe; 81. Water distribution hole; 9. Overflow trough; 91. Overflow hole. DETAILED DESCRIPTION

[0025] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0026] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0027] Example:

[0028] Figure 1 It is a schematic diagram of the internal structure of the cyclone anaerobic reactor of the present invention. Figure 2 Schematic diagram of the main structure of the three-phase separator in the cyclone anaerobic reactor of the present invention. Figures 1-2As shown, the cyclone anaerobic reactor includes a tower body 1 and a three-phase separator 2, the tower body 1 has a cylindrical inner cavity, the top of the tower body 1 has a water outlet 11, the bottom of the tower body 1 has a water inlet 12, the three-phase separator 2 has a plurality of, the three-phase separator 2 is fixedly arranged inside the tower body 1, the three-phase separator 2 includes a plurality of guide blades 21 and a mud guide portion 22, the mud guide portion 22 has a first opening 23 and a second opening 24. Exemplarily, the mud guide portion 22 is a hollow truncated cone, the first opening 23 is located at the top of the mud guide portion 22, the second opening 24 is located at the bottom of the mud guide portion 22, and the inner diameter of the first opening 23 is greater than the inner diameter of the second opening 24. The mud guide portion 22 connects the upper area with the lower area, the first end of the guide blade 21 is fixedly connected to the outer side of the mud guide portion 22 and the angle between the blade surface of the guide blade 21 and the horizontal plane is 50°, the second end of the guide blade 21 is fixedly connected to the inner wall of the tower body 1, and a plurality of guide blades 21 are radially arranged along the outer side of the mud guide portion 22. The plate surface of two guide blades 21 partially overlaps. By applying the principle of shallow sedimentation, a very shallow sedimentation area is formed between the two parallel guide blades 21, so that the treated water and the settled sludge move and separate relative to each other in the shallow sedimentation layer, and the sedimentation time is shortened by shortening the particle sedimentation distance, thereby improving the treatment efficiency of the three-phase separator 2.

[0029] like Figure 1 As shown, further, there are four three-phase separators 2, and the four three-phase separators 2 separate the interior of the tower body 1, which are divided into a primary separation zone 13, a secondary separation zone 14, a tertiary separation zone 15, a quaternary separation zone 16 and a water purification zone 17 from bottom to top.

[0030] like Figure 1 As shown, further, the three-phase separator 2 at the top of the primary separation zone 13 is provided with a guide pipe 3, and the top of the guide pipe 3 is connected to the second opening 24. Due to the centrifugal force, the sludge in the secondary separation zone 14 gathers toward the mud guide part 22, and the sludge passes through the first opening 23, the second opening 24 and the guide pipe 3 in turn and settles to the sludge area at the bottom of the tower body 1, preventing the sludge in the secondary separation zone 14 from settling along the mud guide part 22 to the primary separation zone 13. As the water flow continues to swirl and rise to the secondary separation zone 14, the separation effect of the three-phase separator 2 is improved.

[0031] like Figure 1 As shown, further, a reflection cone 4 is suspended at the bottom of the guide pipe 3, and the reflection cone 4 is conical, with the tip of the reflection cone 4 facing the bottom pipe opening of the guide pipe 3. After the sludge in the guide pipe 3 flows out from the bottom pipe opening of the guide pipe 3, it hits the tip of the reflection cone 4, and the sludge is scattered along the surface of the reflection cone 4, so that the sludge is evenly settled in the sludge area at the bottom of the tower body 1, preventing the sludge from being deposited at the center point of the bottom of the tower body 1.

[0032] like Figure 1As shown, further, the side of the guide pipe 3 is connected to the reflux pipe 5, and the reflux pipe 5 extends out of the inner wall of the tower body 1 to connect to the output end of the pump body 6. A suction pipe 7 is provided in the four-stage separation area 16, and the second end of the suction pipe 7 extends out of the inner wall of the tower body 1 to connect to the input end of the pump body 6. The pump body 6 extracts liquid from the four-stage separation area 16 through the suction pipe 7, and the liquid is output to the reflux pipe 5 through the pump body 6. The liquid passes through the reflux pipe 5 and the pipe opening at the bottom of the guide pipe 3 in turn and enters the primary separation area 13. Since the liquid is extracted by the pump body 6, the liquid flow rate is accelerated, and the liquid enters the primary separation area 13 from the pipe opening at the bottom of the guide pipe 3, which accelerates the rising liquid flow rate in the tower body 1, thereby further accelerating the water flow rate passing through the three-phase separator 2, accelerating the rotation speed of the vortex, increasing the centrifugal force of the vortex, and improving the separation effect of the three-phase separator 2.

[0033] like Figure 1 As shown, further, a first end of the water suction pipe 7 is provided with an annular pipeline 71, the annular pipeline 71 is connected to the water suction pipe 7, and a plurality of water suction ports are provided on the inner wall of the annular pipeline 71, thereby expanding the area of ​​water drawn by the pump body 6 from the water suction pipe 7. Exemplarily, a bracket 72 is provided on the inner wall of the tower body 1 of the four-stage separation zone 16, and the bracket 72 is located at the bottom end of the annular pipeline 71 and fixedly supports the annular pipeline 71.

[0034] like Figure 1 As shown, further, the water inlet 12 is provided with a water distribution pipe 8, and the water distribution pipe 8 is provided with a plurality of water distribution holes 81 at intervals. After the water to be treated enters from the water inlet 12, it enters the primary separation area 13 from the water distribution holes 81 on the water distribution pipe 8, so that the water to be treated enters the tower body 1 evenly.

[0035] like Figure 1 As shown, further, an overflow groove 9 is provided at the top of the tower body 1, and a plurality of overflow holes 91 are spaced apart on the side wall of the overflow groove 9. The water outlet 11 connects the overflow groove 9 with the outside of the tower body 1. When the water level in the clean water area 17 reaches the height of the overflow hole 91, the clean water enters the overflow groove 9 from the overflow hole 91, and the clean water flows into the water outlet 11 along the overflow groove 9 and is discharged from the tower body 1. The overflow groove 9 and the overflow hole 91 are provided to achieve uniform discharge of the clean water.

[0036] When this embodiment is working:

[0037] The sewage to be treated is continuously introduced into the water inlet 12, and the sewage is evenly distributed in the tower body 1 through the water distribution holes 81 on the water distribution pipe 8. The sewage in the primary separation zone 13 continuously rises and passes through the three-phase separator 2. The bubbles with sludge in the wastewater hit the guide blades 21, the bubbles burst, and the sludge settles downward. The water flows along the guide blades 21 to form an ascending vortex in the tower body 1. The sludge rotates rapidly with the water flow. The sludge entering the secondary separation zone 14 along the water flow gathers toward the first opening 23 at the center of the vortex and is guided into the mud guide part 22, and enters the guide pipe 3 from the second opening 24. After the sludge flows out from the bottom pipe opening of the guide pipe 3, it hits the tip of the reflection cone 4, and the sludge is scattered along the surface of the reflection cone 4. , and evenly settles at the bottom of the first separation zone. The water in the secondary separation zone 14 enters the tertiary separation zone 15 and the quaternary separation zone 16 in an ascending vortex state to complete multi-stage separation. The pump body 6 is turned on. The pump body 6 extracts liquid from the quaternary separation zone 16 through the annular pipeline 71 and the water suction pipe 7. The liquid is output to the reflux pipe 5 through the pump body 6. The liquid enters the primary separation zone 13 through the reflux pipe 5 and the pipe opening at the bottom of the guide pipe 3 in turn to accelerate the overall liquid rising speed in the tower body 1. The liquid continues to rise and enters the clean water zone 17. When the water level in the clean water zone 17 reaches the height of the overflow hole 91, the clean water enters the overflow trough 9 from the overflow hole 91, and the clean water flows into the water outlet 11 along the overflow trough 9 and is discharged from the tower body 1.

[0038] In this embodiment, wastewater continuously enters the tower body 1 from the water inlet 12, and the wastewater rises uniformly in the tower body 1 and passes through the three-phase separator 2. The bubbles with sludge in the wastewater hit the guide blades 21, causing the bubbles to burst and the sludge to settle downward. Since the angle between the blade surface of the guide blade 21 and the horizontal plane is greater than 0, it has a guiding property. The water flows along the guide blades 21 to form an ascending vortex in the tower body 1, and the sludge rotates rapidly with the water flow. Since the probability of bubbles hitting the guide blades 21 is increased in the vortex state, and the sludge gathers in the vortex state, the collision between the granular sludge is enhanced, making it easier to get out of the sludge. The bubbles are separated, so that the bubbles that have not been separated collide with each other, separate and settle, thereby enhancing the separation effect of the three-phase separator 2; at the same time, due to the action of centrifugal force, part of the sludge that enters the upper area along the water flow is gathered toward the first opening 23 in the center of the cyclone and guided into the sludge guide part 22, and settles from the second opening 24 to the lower area in the tower body 1 to complete the sedimentation, and the clean water and gas are dispersed around and rise to the upper area in the tower body 1 and overflow out of the tower body 1 through the water outlet 11, thereby reducing the contact between the separated sludge and the clean water and gas, and the amount of sludge entrained when the water in the anaerobic reactor overflows to the water outlet 11 is small, thereby improving the working efficiency of the anaerobic reactor.

[0039] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. Cyclone anaerobic reactor, characterized in that: include: A tower body (1), wherein the top end of the tower body (1) is provided with a water outlet (11), and the bottom end of the tower body (1) is provided with a water inlet (12); A plurality of three-phase separators (2) are provided. The three-phase separators (2) are fixedly arranged inside the tower body (1). The three-phase separators (2) include a plurality of guide blades (21) and a mud guide portion (22). The mud guide portion (22) has a first opening (23) and a second opening (24). The mud guide portion (22) communicates an upper layer area with a lower layer area. A first end of the guide blade (21) is fixedly connected to the outside of the mud guide portion (22) and an angle between the blade surface of the guide blade (21) and a horizontal plane is greater than 0. A second end of the guide blade (21) is fixedly connected to the inner wall of the tower body (1). The plurality of guide blades (21) are radially spaced along the outside of the mud guide portion (22).

2. The cyclone anaerobic reactor according to claim 1, characterized in that: The mud guide portion (22) is in the shape of a hollow truncated cone, the first opening (23) is located at the top end of the mud guide portion (22), the second opening (24) is located at the bottom end of the mud guide portion (22), and the inner diameter of the first opening (23) is greater than the inner diameter of the second opening (24).

3. The cyclone anaerobic reactor according to claim 1, characterized in that: The three-phase separators (2) are four in number, and the four three-phase separators (2) separate the interior of the tower body (1), and are divided into a primary separation zone (13), a secondary separation zone (14), a tertiary separation zone (15), a quaternary separation zone (16) and a water purification zone (17) from bottom to top.

4. The cyclone anaerobic reactor according to claim 3, characterized in that: The three-phase separator (2) at the top of the primary separation zone (13) is provided with a flow guide pipe (3), and the top of the flow guide pipe (3) is connected to the second opening (24).

5. The cyclone anaerobic reactor according to claim 4, characterized in that: A reflection cone (4) is suspended at the bottom of the flow guide pipe (3); the reflection cone (4) is conical, and the tip of the reflection cone (4) faces the bottom pipe opening of the flow guide pipe (3).

6. The cyclone anaerobic reactor according to claim 4, characterized in that: The side of the flow guide pipe (3) is connected to a return pipe (5), and the return pipe (5) extends out of the inner wall of the tower body (1) and is connected to the output end of the pump body (6). A water suction pipe (7) is provided in the fourth-stage separation zone (16), and the second end of the water suction pipe (7) extends out of the inner wall of the tower body (1) and is connected to the input end of the pump body (6).

7. The cyclone anaerobic reactor according to claim 6, characterized in that: The first end of the water suction pipe (7) is provided with an annular pipeline (71), the annular pipeline (71) is connected to the water suction pipe (7), and a plurality of water suction ports are provided inside the annular pipeline (71).

8. The cyclone anaerobic reactor according to claim 7, characterized in that: A bracket (72) is provided on the inner wall of the tower body (1) of the fourth-stage separation zone (16); the bracket (72) is located at the bottom end of the annular pipeline (71) and fixes the annular pipeline (71).

9. The cyclone anaerobic reactor according to claim 1, characterized in that: The water inlet (12) is provided with a water distribution pipe (8), and a plurality of water distribution holes (81) are provided at intervals on the water distribution pipe (8).

10. The cyclone anaerobic reactor according to claim 1, characterized in that: An overflow trough (9) is provided at the top of the tower body (1), a plurality of overflow holes (91) are spaced apart on the side wall of the overflow trough (9), and the water outlet (11) connects the overflow trough (9) with the outside of the tower body (1).

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