CN114772719A

CN114772719A - Multistage fan blade staggered and partitioned efficient anaerobic reactor and treatment method thereof

Info

Publication number: CN114772719A
Application number: CN202210291284.9A
Authority: CN
Inventors: 戴若彬; 王志伟; 李胄彦; 王雪野
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-07-22
Anticipated expiration: 2042-03-23
Also published as: CN114772719B

Abstract

The invention discloses a multistage fan blade dislocation and partition efficient anaerobic reactor and a treatment method thereof. The water distribution area is provided with an inverted bell mouth-shaped water inlet pipe; the central gas collecting pipe is arranged in the center of the reaction area, the fan blade baffle plates are uniformly arranged in the vertical direction of the central gas collecting pipe, the adjacent fan blade baffle plates form a certain angle in the circumferential direction, the segmented collection of generated gas is realized, and staggered partitions are formed, the top of the central gas collecting pipe is connected to the double-cone-shaped gas collecting pipe and used for restraining the entrainment effect of gas gushes on muddy water, the bottom of the central gas collecting pipe is connected to the inverted-horn-shaped solid-liquid backflow pipe, and the separation area is provided with the inverted-horn-shaped three-phase separator and the sawtooth-shaped overflow weir. The invention adopts the four-stage fan blades and the central gas collecting pipe to realize the dislocation partition in the reactor, has the characteristics of high organic load, partition cooperation of functional microorganisms and gas production pre-collection, effectively prevents the phenomena of short liquid flow and washing out of the functional microorganisms, and ensures the long-term stable operation of the reactor, thereby realizing the low-consumption and high-efficiency treatment of high-concentration organic wastewater and the synchronous recovery of carbon resources.

Description

Multistage fan blade staggered and partitioned efficient anaerobic reactor and treatment method thereof

Technical Field

The invention particularly relates to a multistage fan blade dislocation and partition efficient anaerobic reactor and a treatment method thereof, belonging to the field of sewage treatment equipment.

Background

In recent years, the anaerobic biological treatment technology has been receiving increasing attention from the industry because it can convert organic matters in wastewater into biogas by anaerobic microorganisms under anaerobic conditions and synchronously realize sewage purification treatment. Compared with the traditional aerobic biological treatment technology, the anaerobic biological treatment technology has the advantages of high organic load, no need of aeration and oxygen supply, low residual sludge yield, capability of recycling carbon resources in wastewater and the like.

The main equipment carrier for anaerobic biological treatment is an anaerobic bioreactor, and the core of research and development is the high-efficiency separation of solid, liquid and gas phases so as to enrich high-concentration anaerobic functional microorganisms in the bioreactor and realize the high-efficiency degradation of pollutants. Currently, anaerobic reactors have been developed to the third generation, which are represented by Upflow Anaerobic Sludge Blanket (UASB), anaerobic Expanded Granular Sludge Blanket (EGSB), anaerobic internal circulation reactor (IC), etc., and have been greatly improved in gas-liquid-solid three-phase separation, sludge retention, etc., compared to the second generation anaerobic reactors. However, the UASB, EGSB, IC and other reactors rely too much on the separation action of the three-phase separator components, and when high-concentration organic wastewater is treated, the line of defense of the three-phase separator is easily broken by the serious sludge entrainment phenomenon caused by severe gas production, so that a large amount of key functional microorganisms are washed out, and the efficiency and the long-term operation stability of the anaerobic reactor are seriously restricted.

One of the ideas for solving the problems is to collect gas in advance through the reaction zone of the anaerobic reactor so as to realize gas-liquid-solid three-phase pre-separation. Meanwhile, the inner member for collecting gas in advance also plays a role of dividing functional zones, so that anaerobic functional flora plays respective roles in respective regions, and the regions are efficiently cooperated with each other, thereby constructing an efficient and stable fourth-generation anaerobic bioreactor system. According to the invention, the reaction zone of the anaerobic reactor is provided with the multistage fan blades and the central gas collecting pipe, the function division is carried out on the reaction zone based on the anaerobic digestion four-stage theory, and the three phases are collected to the gas collecting pipe by utilizing the flow guiding effect of the fan blades on the gas-liquid-solid three phases, and then the three phases are separated by utilizing the density difference, so that the phenomenon that functional microorganisms are lost when the reactor is used for treating high-concentration organic wastewater is effectively prevented.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a multistage fan blade dislocation and partition efficient anaerobic reactor and a treatment method thereof. The reactor is divided into a water distribution area, a reaction area, a free airspace area and a three-phase separation area from bottom to top, four-level fan blades and a central gas collecting pipe are adopted in the reaction area to realize dislocation partition, so that the reactor has the characteristics of high organic load, functional microorganism partition cooperation, gas production pre-collection and the like, the phenomena of liquid short flow, functional microorganism washout and the like are effectively prevented, and the low-consumption and high-efficiency treatment and synchronous carbon resource recovery of high-concentration organic wastewater can be realized.

In order to realize the technical purpose, the technical scheme of the invention is as follows:

the utility model provides a high-efficient anaerobic reactor of multistage flabellum dislocation subregion which characterized in that: the reactor comprises a water distribution area, a reaction area, a free airspace area and a three-phase separation area from bottom to top; the water distribution area comprises an inverted bell-mouth-shaped water inlet pipe and a sludge discharge pipe, and the inverted bell-mouth-shaped water inlet pipe extends to the central position from the left side wall; the sludge discharge pipe is arranged on the right side wall, the reaction zone comprises a central gas collecting pipe and a fan blade baffle, the fan blade baffle comprises a first fan blade baffle, a second fan blade baffle, a third fan blade baffle and a fourth fan blade baffle, the first fan blade baffle, the second fan blade baffle, the third fan blade baffle and the fourth fan blade baffle are arranged in a staggered mode and form a certain angle in the circumferential direction, and the fan blade baffle and the outer wall of the central gas collecting pipe are installed in an inclined downward direction at an angle; the first fan blade baffle, the second fan blade baffle, the third fan blade baffle and the fourth fan blade baffle are respectively and sequentially provided with a first gas collecting hole, a second gas collecting hole, a third gas collecting hole and a fourth gas collecting hole at the joint with the central gas collecting pipe; the free airspace area comprises a return pipe, and the outer end opening of the return pipe is connected with a lower inverted-bell-mouth-shaped water inlet pipe; the three-phase separation zone comprises an inverted horn mouth-shaped three-phase separator and a zigzag overflow weir; the zigzag overflow weir is arranged on the wall of the reactor in the middle of the three-phase separation zone, the water outlet pipe is arranged on the left side of the wall of the reactor, and the zigzag overflow weir is connected with the water outlet pipe; the upper end part of the central gas collecting pipe is provided with a double-cone gas collecting pipe, the upper end of the three-phase separator is provided with a top cover, the double-cone gas collecting pipe is communicated with the inverted-horn-shaped three-phase separator through a fifth gas collecting hole, and the lower end of the central gas collecting pipe is connected with an inverted-horn-shaped solid-liquid return pipe; and the top end of the double-cone gas collecting pipe is provided with an exhaust hole.

Further, the height ratio of the water distribution area (I), the reaction area (II), the free airspace area (III) and the three-phase separation area (IV) is 1: (2-4): (1-2): (1.5-2).

Furthermore, the reaction zone (II) is cylindrical, and the height-diameter ratio is (5-10): 1.

furthermore, the fan blade baffle is surrounded by a fan-shaped curved baffle and a triangular baffle from two straight edges to the wall of the central pipe, the fan blade baffle is obliquely and downwards arranged on the outer wall of the central gas collecting pipe, the curved baffle and the wall of the central gas collecting pipe form an included angle of 45-60 degrees, and the included angle of the projection of the two straight edges of the curved baffle on a reference horizontal plane is 100-120 degrees.

Furthermore, the straight edges on the same side of the adjacent fan blade baffles are distributed in a staggered manner at an angle of 90-110 degrees in the circumferential direction, the angle of the staggered distribution is smaller than the included angle of the projection of the two straight edges of the curved surface baffles on the reference horizontal plane, and the adjacent fan blade baffles have the same distance in the vertical direction.

Further, the bottom end of the double-cone gas collecting pipe is higher than the top end of the zigzag overflow weir, and the length ratio of the maximum pipe diameter of the double-cone gas collecting pipe to the pipe diameter of the central gas collecting pipe is (1.5-3): 1, the included angle between the lower conical bus of the double-conical gas collecting pipe and the wall of the central gas collecting pipe is 30-45 degrees.

Further, the inverted-horn-mouth-shaped solid-liquid backflow pipe is connected with the bottom of the central gas collecting pipe and is in a circular-truncated-cone shape, the bottom surface and the top surface are not provided with baffles, and the ratio of the diameter of the bottom surface to the diameter of the top surface is (1.5-3): 1.

further, the treatment method of the multistage fan blade dislocation partition efficient anaerobic reactor comprises the following steps:

s1: organic wastewater enters the water distribution area through the inverted-bell-mouth-shaped water inlet pipe and then enters the bottom of the reaction area, gas generated in the first stage is mainly collected by the first fan blade baffle and enters the central gas collecting pipe through the first gas collecting hole, the organic wastewater then rises and passes through the first fan blade baffle, gas generated in the second stage is mainly collected by the second fan blade baffle and enters the central gas collecting pipe through the second gas collecting hole, the organic wastewater then rises and passes through the second fan blade baffle, and gas generated in the third stage is mainly collected by the third fan blade baffle and enters the central gas collecting pipe through the third gas collecting hole;

s2: the organic wastewater then rises through the third fan blade baffle, and the fourth-stage gas generation is mainly collected by the fourth fan blade baffle and enters the central gas collecting pipe through the fourth gas collecting hole; organic wastewater rises through a fourth fan blade baffle and then enters a free airspace area, sludge and part of sewage flow back to the bottom through a return pipe for regulating and controlling the rising flow rate and flux, the other part of wastewater enters a three-phase separation area, gas generated in the fifth stage is mainly directly collected by an inverted horn mouth-shaped three-phase separator, and the gas generated in the fifth stage escapes from the liquid level, enters a double-cone gas collecting pipe through a fifth gas collecting hole and is finally discharged through an exhaust pipe;

s3: the clean water separated by the inverted-bell-mouth-shaped three-phase separator is discharged through a water outlet pipe through a zigzag overflow weir, the gas entering the central gas collecting pipe in the reaction area is converged, the gas and the liquid are further separated by the double-cone gas collecting pipe and then discharged through an exhaust pipe, and the solid-liquid mixture in the central gas collecting pipe is discharged through an inverted-bell-mouth-shaped solid-liquid return pipe at the bottom, flows back to the bottom of the reaction area and forms cooperative flow guide with the inverted-bell-mouth-shaped water inlet pipe.

As can be seen from the above description, the present invention has the following advantages:

1. the reactor reaction zone of the reactor adopts multistage fan blades which are arranged in a staggered mode, the function division is carried out on the reaction zone, four core functions of hydrolysis, acidification, acetic acid production and methane production in an anaerobic digestion four-stage theory are effectively corresponded, the effective enrichment of key functional microorganisms in each zone is favorably realized, and the microorganisms respectively play roles in the functional zones and efficiently cooperate among the functional zones.

2. The reactor of the invention collects the produced gas in sections through the fan blade baffle and the central gas collecting pipe, thereby avoiding the phenomena of short flow and sludge leakage caused by the fact that the produced gas directly rises from the bottom and carries sewage or sludge, ensuring the retention time of the sewage in the reactor and effectively retaining anaerobic microorganisms. The top of the central gas collecting pipe is connected with the double-cone gas collecting pipe, so that the gas surge phenomenon possibly occurring in the central gas collecting pipe can be effectively prevented when gas is produced violently. The bottom of the central gas collecting pipe is provided with an inverted-trumpet-shaped solid-liquid return pipe, so that solid and liquid can flow back to the bottom of the reaction zone through the inverted-trumpet-shaped solid-liquid return pipe and form cooperative diversion with the inverted-trumpet-shaped water inlet pipe, the returned solid-liquid mixture and inlet water are effectively mixed, self circulation of liquid in the reactor is realized, and the impact load resistance of the reactor is improved.

3. The reactor realizes the partition of microorganism functions, sectional collection of produced gas and liquid internal circulation by staggered arrangement of the multistage fan blades, realizes the effective retention of functional microorganisms of the reactor, is favorable for long-term stable operation of the reactor when treating high-concentration organic wastewater, is also favorable for retaining core functional microorganisms, and realizes the high-efficiency treatment of refractory organic matters in the wastewater.

Drawings

FIG. 1 is a schematic view of the structure of a reactor according to the present invention;

FIG. 2 is a schematic view of a partial structure of a reaction zone according to the present invention;

fig. 3 is a schematic diagram of a double-cone gas header structure according to the present invention.

Reference numerals:

1. the water distribution device comprises an inverted bell-mouthed water inlet pipe, 2. a first fan blade baffle, 3. a second fan blade baffle, 4. a third fan blade baffle, 5. a fourth fan blade baffle, 6. a first gas collecting hole, 7. a second gas collecting hole, 8. a third gas collecting hole, 9. a fourth gas collecting hole, 10. a central gas collecting pipe, 11. a return pipe, 12. a sludge discharge pipe/vent pipe, 13. a bottom plate, 14. an inverted bell-mouthed three-phase separator, 15. a zigzag overflow weir, 16. a water outlet pipe, 17. a double-cone gas collecting pipe, 18. a fifth gas collecting hole, 19. an inverted bell-mouthed solid-liquid return pipe, 20. a top cover, 21. an exhaust pipe, 22. an inspection port 23. a first sampling port, 24. a second sampling port, 25. a third sampling port, 26. a fourth sampling port, I. a water distribution area, II. a reaction area, III. a free area, IV. a separation area.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and further, the features of the present invention will be explained, but the claims of the present invention are not limited in any way. In addition, based on the content of the invention, various changes or modifications of the invention can be made by those skilled in the art, and the equivalents thereof can be covered by the protection scope of the invention.

As shown in figure 1, the reactor of the invention is divided into a water distribution area (I), a reaction area (II), a free airspace area (III) and a three-phase separation area (IV) from bottom to top; the water distribution area (I) is provided with an inverted bell-mouth-shaped water inlet pipe (1) extending from the side wall to the center, and the bottom of the water distribution area is provided with a sludge discharge pipe/an emptying pipe (12) close to the bottom plate (13); the central gas collecting pipe (10) is arranged in the reaction area (II) from top to bottom, fan blade baffles are uniformly arranged in the vertical direction of the central gas collecting pipe and comprise a first fan blade baffle (2), a second fan blade baffle (3), a third fan blade baffle (4) and a fourth fan blade baffle (5), adjacent fan blade baffles form a certain angle in the circumferential direction, and each fan blade baffle is obliquely arranged on the outer wall of the central gas collecting pipe downwards at a certain angle; a first gas collecting hole (6), a second gas collecting hole (7), a third gas collecting hole (8) and a fourth gas collecting hole (9) are sequentially formed in the wall of the central gas collecting pipe in a space between the central gas collecting pipe and each fan blade baffle; the free airspace zone (III) is provided with a return pipe (11) which is connected with the lower inverted-bell-mouth-shaped water inlet pipe (1); the three-phase separation zone (IV) is provided with an inverted horn mouth-shaped three-phase separator (14); the middle part of the three-phase separation zone (IV) is provided with a sawtooth overflow weir (15) along the wall of the reactor and is connected with a water outlet pipe (16) arranged at one side of the reactor; the central gas collecting pipe (10) is arranged at the lower end of the top cover (20) through a double-cone gas collecting pipe (17) and is communicated with the inverted-bell-mouth-shaped three-phase separator (14) through a fifth gas collecting hole (18); the top end of the reactor is provided with an exhaust hole (21).

The height ratio of the water distribution zone (I), the reaction zone (II), the free airspace zone (III) and the three-phase separation zone (IV) is 1: 4: 2: and 2, ensuring that the efficiency of each functional area is fully exerted. Wherein, the water distribution area occupies the total height 1/9, too low can reduce the water distribution uniformity, and too high increases the construction cost; the reaction zone occupies the total height 4/9, so that the sufficient contact time of the anaerobic microorganisms and the sewage is ensured; the free airspace zone occupies the total height 2/9 and is used as the extension of the reaction zone, thereby playing the role of preliminary solid-liquid separation and preventing the anaerobic sludge bed from being overhigh; the three-phase separation zone occupies the total height 2/9, ensures sufficient three-phase separation effect, and avoids the phenomena of washout, short flow, insufficient gas collection and the like.

The reaction zone (II) is cylindrical, and the height-diameter ratio is 8: 1.

the fan blade baffle is formed by a fan-shaped curved baffle and a triangular baffle from two straight edges to the wall of the central pipe, the fan blade baffle is obliquely and downwards arranged on the outer wall of the central gas collecting pipe, the curved baffle and the wall of the central gas collecting pipe form an included angle of 45 degrees, and the included angle of the two straight edges of the curved baffle projected on a reference horizontal plane is 120 degrees. The included angle of 45 degrees effectively ensures that the methane bubbles rise along the inner side of the baffle and are collected into the central pipe; the included angle of 120 degrees is set for the area of a single baffle, material cost and processing cost are unnecessarily increased when the included angle is too large, and the whole circumference cannot be completely covered by all the baffles when the included angle is too small.

As a preferred scheme, straight edges on the same side of the adjacent fan blade baffles are distributed at 90 degrees in the circumferential direction, the staggered distribution angle is smaller than a 120-degree included angle of two straight edges of the curved surface baffle projected on a reference horizontal plane, and the adjacent fan blade baffles are identical in vertical distance, so that the cross section of the reaction zone can be completely covered after the projections of the fan blade baffles on the reference horizontal plane are mutually superposed, and effective gas pre-collection is realized.

The bottom end of the double-cone gas collecting pipe is higher than the top end of the zigzag overflow weir, and the length ratio of the maximum pipe diameter of the double-cone gas collecting pipe to the pipe diameter of the central gas collecting pipe is 3: 1, the included angle between the lower conical generatrix of the double-conical gas collecting pipe and the wall of the central gas collecting pipe is 30 degrees, so as to prevent short flow and effluent quality deterioration caused by gas surge.

The inverted-horn-mouth-shaped solid-liquid backflow pipe is connected with the bottom of the central gas collecting pipe and is in a round table shape, the bottom surface and the top surface are not provided with baffles, and the ratio of the diameter of the bottom surface to the diameter of the top surface is 2: 1. so that the anaerobic sludge entering the central gas collecting pipe uniformly flows back to the bottom of the reactor.

The operation mode of the invention is as follows:

organic wastewater enters the water distribution area through the inverted bell-mouth-shaped water inlet pipe 1 and then enters the bottom of the reaction area, and gas generated at the stage is mainly collected by the first fan blade baffle 2 and enters the central gas collecting pipe 10 through the first gas collecting hole 6. After the organic wastewater rises and passes through the first fan blade baffle 2, the gas generated at this stage is mainly collected by the second fan blade baffle 3 and enters the central gas collecting pipe 10 through the second gas collecting hole 7. After the organic wastewater rises through the second fan baffle 3, the gas generated at this stage is mainly collected by the third fan baffle 4 and enters the central gas collecting pipe 10 through the third gas collecting hole 8. After the organic wastewater rises through the third blade baffle 4, the produced gas at this stage is mainly collected by the fourth blade baffle 5 and enters the central gas collecting pipe 10 through the fourth gas collecting hole 9. The arrangement of the fan blade baffles realizes gas collection, and simultaneously anaerobic sludge and sewage are wrapped by bubbles, and an independent circulating flow field reaction area is formed below each fan blade baffle, so that the advanced treatment of the sewage is promoted. Organic wastewater rises through the fourth fan blade baffle 5 and then enters a free airspace area, sludge and part of sewage flow back to the bottom through the return pipe 11 for regulating and controlling the rising flow rate and flux, the other part of wastewater enters a three-phase separation area, gas generated in the stage is mainly directly collected by the inverted-horn-shaped three-phase separator 14, and the gas generated in the stage escapes from the liquid level, enters the double-cone-shaped gas collecting pipe 17 through the fifth gas collecting hole 18 and is finally discharged through the exhaust pipe 21. The clean water separated by the inverted bell-mouth-shaped three-phase separator 14 is discharged through a water outlet pipe 16 by a zigzag overflow weir 15. The gas entering the central gas collecting pipe 10 in the reaction zone is converged, further gas and liquid are separated by the double-cone gas collecting pipe 17 and then discharged by the exhaust pipe 21, and the solid-liquid mixture in the central gas collecting pipe 10 is discharged by the inverted-bell-mouth-shaped solid-liquid return pipe 19 at the bottom and flows back to the bottom of the reaction zone to form cooperative diversion with the inverted-bell-mouth-shaped water inlet pipe 1.

Claims

1. The utility model provides a high-efficient anaerobic reactor of multistage flabellum dislocation subregion which characterized in that: the reactor comprises a water distribution area, a reaction area, a free airspace area and a three-phase separation area from bottom to top; the water distribution area comprises an inverted bell-mouth-shaped water inlet pipe and a sludge discharge pipe, and the inverted bell-mouth-shaped water inlet pipe extends to the central position from the left side wall; the sludge discharge pipe is arranged on the right side wall, the reaction zone comprises a central gas collecting pipe and a fan blade baffle, the fan blade baffle comprises a first fan blade baffle, a second fan blade baffle, a third fan blade baffle and a fourth fan blade baffle, the first fan blade baffle, the second fan blade baffle, the third fan blade baffle and the fourth fan blade baffle are arranged in a staggered mode and form a certain angle in the circumferential direction, and the fan blade baffles and the outer wall of the central gas collecting pipe are installed in an inclined downward direction at an angle; a first gas collecting hole, a second gas collecting hole, a third gas collecting hole and a fourth gas collecting hole are sequentially formed at the joints of the first fan blade baffle, the second fan blade baffle, the third fan blade baffle and the fourth fan blade baffle and the central gas collecting pipe respectively; the free airspace area comprises a return pipe, and the outer end opening of the return pipe is connected with a lower inverted-bell-mouth-shaped water inlet pipe; the three-phase separation zone comprises an inverted horn mouth-shaped three-phase separator and a zigzag overflow weir; the zigzag overflow weir is arranged on the wall of the reactor in the middle of the three-phase separation zone, the water outlet pipe is arranged on the left side of the wall of the reactor, and the zigzag overflow weir is connected with the water outlet pipe; the upper end part of the central gas collecting pipe is provided with a double-cone gas collecting pipe, the upper end of the three-phase separator is provided with a top cover, the double-cone gas collecting pipe is communicated with the inverted-horn-shaped three-phase separator through a fifth gas collecting hole, and the lower end of the central gas collecting pipe is connected with an inverted-horn-shaped solid-liquid backflow pipe; and the top end of the double-cone gas collecting pipe is provided with an exhaust hole.

2. The efficient anaerobic reactor with multistage fan blades staggered and partitioned as claimed in claim 1, wherein: the height ratio of the water distribution area, the reaction area, the free airspace area and the three-phase separation area is 1: (2-4): (1-2): (1.5-2).

3. The multi-stage fan blade malposed and partitioned efficient anaerobic reactor according to claim 1, wherein: the reaction zone is cylindrical, and the height-diameter ratio is (5-10): 1.

4. the multi-stage fan blade malposed and partitioned efficient anaerobic reactor according to claim 1, wherein: the fan blade baffle comprises a curved surface baffle and two side triangular baffles, the two side triangular baffles are connected with the curved surface baffle, the fan-shaped baffle is obliquely and downwards installed on the outer wall of the central gas collecting pipe, the curved surface baffle and the wall of the central gas collecting pipe form an included angle of 45-60 degrees, and the included angle of two straight sides of the curved surface baffle projected on a reference horizontal plane is 100-120 degrees.

5. The multi-stage fan blade malposed and partitioned efficient anaerobic reactor according to claim 1, wherein: straight sides on the same side of the adjacent fan blade baffles are distributed in a staggered mode at an angle of 90-110 degrees in the circumferential direction, the staggered distribution angle needs to be smaller than the included angle of the two straight sides of the curved surface baffles in projection on a reference horizontal plane, and the adjacent fan blade baffles are identical in distance in the vertical direction.

6. The multi-stage fan blade malposed and partitioned efficient anaerobic reactor according to claim 1, wherein: the bottom end of the double-cone gas collecting pipe is higher than the top end of the zigzag overflow weir, and the length ratio of the maximum pipe diameter of the double-cone gas collecting pipe to the pipe diameter of the central gas collecting pipe is (1.5-3): 1, the included angle between the lower conical bus of the double-conical gas collecting pipe and the wall of the central gas collecting pipe is 30-45 degrees.

7. The multi-stage fan blade malposed and partitioned efficient anaerobic reactor according to claim 1, wherein: the inverted-horn-shaped solid-liquid backflow pipe is connected with the bottom of the central gas collecting pipe and is in a round table shape, the bottom surface and the top surface are not provided with baffles, and the ratio of the diameter of the bottom surface to the diameter of the top surface is (1.5-3): 1.

8. the treatment method of the high-efficiency anaerobic reactor utilizing the multistage fan blade dislocation zone as claimed in any one of claims 1 to 7, which is characterized by comprising the following steps:

s1: organic waste water enters the water distribution area through the inverted-horn-shaped water inlet pipe and then enters the bottom of the reaction area, gas generated in the first stage is mainly collected by the first fan blade baffle and enters the central gas collecting pipe through the first gas collecting hole, the organic waste water then rises and passes through the first fan blade baffle, gas generated in the second stage is mainly collected by the second fan blade baffle and enters the central gas collecting pipe through the second gas collecting hole, the organic waste water then rises and passes through the second fan blade baffle, and the gas generated in the third stage is mainly collected by the third fan blade baffle and enters the central gas collecting pipe through the third gas collecting hole;

s2: the organic wastewater then rises through the third fan blade baffle, and the fourth-stage gas generation is mainly collected by the fourth fan blade baffle and enters the central gas collecting pipe through the fourth gas collecting hole; organic wastewater rises and enters a free airspace zone after passing through a fourth fan blade baffle, sludge and partial sewage flow back to the bottom through a return pipe for regulating and controlling the rising flow rate and flux, the other part of wastewater enters a three-phase separation zone, gas generated in the fifth stage is mainly directly collected by an inverted-bell-mouth-shaped three-phase separator, and the gas generated in the fifth stage flows out of the liquid level, enters a double-cone-shaped gas collecting pipe through a fifth gas collecting hole and is finally discharged through an exhaust pipe;