CN218262148U

CN218262148U - Anaerobic reactor

Info

Publication number: CN218262148U
Application number: CN202222455275.7U
Authority: CN
Inventors: 樊星; 邢梦娇; 曾宪勇; 李佳琦; 何敏霞; 邓凯文; 谢勇
Original assignee: Everbright Envirotech China Ltd; Everbright Environmental Protection Research Institute Nanjing Co Ltd; Everbright Environmental Protection Technology Research Institute Shenzhen Co Ltd
Current assignee: Everbright Envirotech China Ltd; Everbright Environmental Protection Research Institute Nanjing Co Ltd; Everbright Environmental Protection Technology Research Institute Shenzhen Co Ltd
Priority date: 2022-09-16
Filing date: 2022-09-16
Publication date: 2023-01-10
Anticipated expiration: 2032-09-16

Abstract

The utility model discloses an anaerobic reactor, including the reactor body, the supreme being provided with in order is down followed to the reactor body: the water distribution area is an inverted cone, the bottom of the water distribution area is provided with a water inlet, and the water inlet is connected with a water inlet pipe; a reaction zone that is an elongated cylinder; an effluent zone comprising a cyclonic zone, an internal reflux zone and a three-phase separation zone. The utility model discloses an anaerobic reactor has solved current upflow anaerobic reactor and has appeared often behind the inoculation granule mud that the mud runs, mud piles up, produces the blind spot, goes out the not good problem of water quality in the three-phase separator.

Description

Anaerobic reactor

Technical Field

The utility model relates to a sewage treatment's technical field especially relates to an anaerobic reactor.

Background

The anaerobic reaction is one of the most common biochemical reactions in sewage treatment, and has the advantages of low energy consumption, good treatment effect, waste recycling and the like. The existing anaerobic reactors include a full-mixing anaerobic reactor, an anaerobic filter, an anaerobic fluidized bed, an upflow anaerobic reactor and the like. The upflow reactor combined granular sludge is an efficient anaerobic system, has the advantages of large impact load resistance, large gas production, good treatment effect and the like, and is widely applied. However, gas generated in the biochemical reaction process of the granular sludge can be wrapped in the granular cavity or attached to the surface of the granules, so that part of the granules float upwards along with bubbles, and the conventional three-phase separator has an unsatisfactory separation effect, so that the phenomena of sludge accumulation, dead zone generation, poor separation effect, sludge leakage from effluent and the like are caused in the separator. This patent provides a novel upflow anaerobic reactor for solving above-mentioned problem, sets up the whirl section in conventional upflow reactor, strengthens the disturbance before mud water gas three-phase gets into the separator, realizes better mud-water separation effect.

For example, patent CN202519088U proposes a spiral symmetric flow anaerobic reactor, which comprises a water distribution zone, a reaction zone and a three-phase separation zone, wherein the water distribution zone comprises a bottom plate and a lower column, the upper surface of the bottom plate is connected with the lower column, the reaction zone comprises a middle column, and the middle column comprises a cyclone reaction zone and a free space zone; the free airspace zone is internally provided with a return pipe, and the shell of the three-phase separation zone is respectively a cone, an upper column body and a cover plate from bottom to top, so that the three-phase separation zone has the advantages of uniform water distribution, difficulty in blockage, tendency to horizontal push flow state, high treatment efficiency, good liquid-solid mass transfer effect, strong organic load impact resistance, reduction of intermediate product inhibition, effective retention of granular sludge, recoverable alkalinity and the like. The most similar place of this patent and this application lies in all having set up a whirl reaction zone in rising flow reactor, but the purpose that this section was set up to two patents is different, and above-mentioned patent is for the water distribution is even, stable flow state, and this application is for solving the not good problem of three-phase separation effect, and the structure in two patent whirl areas is different.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an anaerobic reactor to the not enough of above-mentioned prior art.

In order to achieve the above purpose, the specific technical scheme of the anaerobic reactor is as follows:

the utility model provides an anaerobic reactor, includes the reactor body, the reactor body is from down up being provided with in order:

the water distribution area is an inverted cone, the bottom of the water distribution area is provided with a water inlet, and the water inlet is connected with a water inlet pipe;

a reaction zone that is an elongated cylinder;

the water outlet area is fixedly provided with a cyclone separator inside, the cyclone separator comprises a sleeve, a double-layer cyclone mechanism fixedly connected to the inner wall of the sleeve and a water inlet at the lower end of the sleeve, a cyclone area is formed inside the cyclone separator, an inner reflux area is formed outside the cyclone separator, a three-phase separator is arranged above the cyclone separator, the three-phase separator comprises a cylindrical barrel and a three-phase separator mud bucket connected to the lower end of the cylindrical barrel, the upper end of the cylindrical barrel is fixedly connected with the top of the reactor body, a water outlet weir is arranged outside the cylindrical barrel and used for water outlet of the reactor body, a three-phase separation area is formed in the area above the cyclone separator inside the reactor body, the three-phase separator divides the three-phase separation area into an inner part and an outer part, the side wall of the reactor body below the water outlet weir is provided with an outer circulation port, the outer circulation port is connected with an outer circulation pump through a pipeline, the other end of the outer circulation pump is connected with an outer return pipe, and the other end of the outer return pipe is communicated with the water inlet pipe.

Further, the height-diameter ratio of the reaction zone is 5-8.

Further, the sleeve is cylindrical, the double-layer rotational flow mechanism is composed of two layers of raised rotary vanes, 6 rotary vanes which are uniformly distributed are arranged on each layer, the rotary vanes rotate upwards along the inner wall of the sleeve, the starting end is a tip, the rotary vanes gradually widen along with the rotation, a smooth closing-up is formed to the tail end, and a water diversion groove is formed between every two adjacent rotary vanes.

Further, the water inlet is trumpet-shaped, and the sectional area of the bottom end of the water inlet is larger than that of the top end of the reaction zone.

Further, the included angle between the side wall of the water inlet and the horizontal line is 40-60 degrees.

Furthermore, the cyclone separator is fixed inside the water outlet area of the reactor body through two fixing strips, one end of each fixing strip is fixedly connected with the outer wall of the sleeve, and the other end of each fixing strip is fixedly connected with the inner wall of the reactor body.

Furthermore, the three-phase separator hopper is in a round table shape, and the included angle between the side wall of the three-phase separator hopper and the horizontal line is 40-60 degrees.

Compared with the prior art, the beneficial effects of the utility model are that:

the existing upflow anaerobic reactor has the defects of sludge leakage, sludge accumulation in a three-phase separator, dead zone generation, poor effluent quality and the like after granular sludge is inoculated. In this case, the water quality of the produced water in the anaerobic system is deteriorated, the sludge is lost, and the load is reduced.

The utility model provides a novel anaerobic reactor through add the whirl district in conventional anaerobic reactor, utilizes setting up of double-deck rotary vane to realize that the flow direction of rising rivers in this region changes. The water flow in the region rises along the rotation of the wall, centrifugal force is generated, the mud-water separation effect is effectively enhanced, wherein, the sludge particles with higher density are separated to the outer side and rise along the water flow, the gas rises at the center of the region due to lower density, the water flow in the cyclone region carries the sludge and bubbles to enter the three-phase separation region, and meanwhile, the cyclone flow direction can wash and disturb the suspended sludge in the sludge hopper, thereby further reducing the sludge accumulation phenomenon in the sludge hopper. The sludge from which the bubbles are separated flows back to the reaction zone through the arrangement of the inner reflux zone, and the effluent enters the outer area of the three-phase separation zone in a baffling manner and flows out through the effluent weir. The granular sludge which floats upwards is effectively refluxed in the reaction zone, the sludge amount of the system is saved, the sludge leakage phenomenon is reduced, and the reaction zone has the advantages of simple structure, good three-phase separation effect and no sludge leakage in discharged water.

That is to say, this patent sets up the whirl upcomer to current upflow anaerobic reactor three-phase separation effect is poor, go out the shortcoming that the water runs mud to set up the dual return-flow system of internal reflux, external reflux, can effectively improve above-mentioned problem, applicable in multiple anaerobic reaction, like methanogen, anammox bacterium etc. have impact load resistance big, the treatment effect good, advantage such as three-phase separation effect is good, specifically as follows:

1. set up the whirl and rise the section, set up through bellied vane angle of the inner wall, distance, quantity etc. and realize that the whirl of rivers rises, utilize centrifugal force separation granule mud and bubble, make the great mud of density rise along the section of thick bamboo wall, the bubble that density is little rises at the center, realizes mud-water separation.

2. The top three-phase separator intercepts the rising water flow of the rotational flow, reduces water outlet disturbance, returns sludge particles to the lower part of the reactor through an internal reflux area, and effectively relieves the sludge running phenomenon outside a gas discharge system generated by top communicated atmosphere or a gas absorption device.

3. The outlet of the outer reflux pipe is connected with the water inlet pipe, so that on one hand, the ascending flow speed is improved by utilizing the outer reflux flow, conditions are provided for forming granular sludge, and simultaneously, the mass transfer effects of diluting inlet water, stirring bottom sludge and homogenizing a system are achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a cyclone separator of the present invention;

FIG. 3 is a top view of the cyclone separator of the present invention;

FIG. 4 is a bottom view of the cyclone separator of the present invention;

FIG. 5 is a schematic view of the cyclone separator of the present invention fixed to a reactor body;

the symbols in the figure illustrate: 1. a reactor body; 2. a swirl zone; 3. an internal reflux zone; 4. a three-phase separator hopper; 5. a three-phase separation zone; 6. an effluent weir; 7. a fixing strip; 8. a cyclone separator; 9. an external circulation pump; 10. a water inlet; 11. a sleeve; 12. a double-layer rotational flow mechanism; 13. a water inlet; 14. a water distribution area; 15. a reaction zone; 16. a water outlet area.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the anaerobic reactor of the present invention will be described in detail with reference to the accompanying drawings and the preferred embodiments.

In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. The specific dimensions used in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.

Example 1:

referring to fig. 1-5, the present invention provides a technical solution: the utility model provides an anaerobic reactor, includes reactor body 1, reactor body 1 is from up being provided with in order down:

the water distribution area 14 is an inverted cone, the bottom of the water distribution area is provided with a water inlet 10, and the water inlet 10 is connected with a water inlet pipe;

a reaction zone 15 which is a slender cylinder and is internally provided with a sludge bed mainly in a granular sludge form;

a water outlet area 16, wherein a cyclone separator 8 is fixed in the water outlet area, the cyclone separator 8 comprises a sleeve 11, a double-layer cyclone mechanism 12 fixedly connected to the inner wall of the sleeve 11 and a water inlet 13 at the lower end of the sleeve 11, a cyclone area 2 is formed inside the cyclone separator 8, an internal reflux area 3 is formed outside the cyclone separator 8, a three-phase separator is arranged above the cyclone separator 8, the three-phase separator comprises a cylindrical barrel and a three-phase separator hopper 4 connected to the lower end of the cylindrical barrel, the upper end of the cylindrical barrel is fixedly connected with the top of the reactor body 1, the upper end of the cylindrical barrel is communicated with an atmosphere or gas collecting device, the gas generated by the reactor is discharged to the atmosphere or gas collecting device, and the inside of the cylindrical barrel is subjected to mud-water-gas three-phase separation; the outer part of the cylindrical barrel is provided with a water outlet weir 6 for discharging water from the reactor body 1, the area of the inner part of the reactor body 1 above the cyclone separator 8 forms a three-phase separation area 5, the three-phase separation area 5 is divided into an inner part and an outer part by the three-phase separator, the side wall of the reactor body 1 below the water outlet weir 6 is provided with an external circulation port, the external circulation port is connected with an external circulation pump 9 through a pipeline, the other end of the external circulation pump 9 is connected with an external return pipe, the other end of the external return pipe is communicated with a water inlet pipe, and the external circulation flow rate is about providing an ascending flow rate of 4-8m/h for a reaction area 15 of the reactor; the total volume of the effluent zone 16 is 25% to 35% of the total reactor volume.

Further, the ratio of the height to the diameter of the reaction zone 15 is 5 to 8.

Further, the sleeve 11 is cylindrical, the double-layer rotational flow mechanism 12 is composed of two layers of raised rotary vanes, each layer is provided with 6 rotary vanes which are uniformly distributed, the rotary vanes rotate along the direction of water flow, namely, the rotary vanes rotate upwards along the inner wall of the sleeve 11, the starting end is a tip, the rotary vanes gradually widen along with the rotary vanes, a smooth closing-up is formed to the tail end, a water diversion groove is formed between two adjacent rotary vanes, and the rotary vanes play a role in guiding water to enable the ascending water flow to rise in a rotational flow manner; each layer of the rotational flow mechanism realizes rotational flow effect through the rotating vanes protruding from the inner wall; the outer part of the cyclone separator 8 is an internal reflux area 3, and the granular sludge stripped of bubbles by the cyclone separator 8 and the three-phase separator falls back to the reaction area.

Further, the water inlet 13 is formed in a trumpet shape, and a sectional area of a bottom end of the water inlet 13 is larger than a sectional area of a top end of the reaction region 15.

Further, the side wall of the water inlet 13 forms an angle of 40 to 60 degrees with the horizontal line.

Further, the cyclone separator 8 is fixed inside the water outlet zone 16 of the reactor body 1 through two fixing strips 7, one end of each fixing strip 7 is fixedly connected with the outer wall of the sleeve 11, and the other end of each fixing strip 7 is fixedly connected with the inner wall of the reactor body 1.

Further, the three-phase separator mud bucket 4 is in a round table shape, is an inlet for solid-liquid-gas three phases to enter the three-phase separator, and is also a starting point for granular sludge to start to flow back, an included angle between the side wall of the three-phase separator mud bucket 4 and a horizontal line is 40-60 degrees, and the sectional area of the bottom end of the three-phase separator mud bucket 4 is larger than the circular sectional area of the top end of the inner reflux area 3.

The working principle is as follows:

this patent provides an improved anaerobic reactor, is applicable to the sewage treatment process of anaerobism granular sludge, also is applicable to granular sludge's cultivation simultaneously. The anaerobic reactor refers to a container for performing biochemical reactions using microorganisms under anaerobic conditions. The granular sludge is granular microorganism sludge used for sewage purification treatment in the field of water treatment.

Specifically, a water inlet 10 is arranged at the bottom of the reactor body 1, sewage is mixed and diluted with external circulation backflow water in a water inlet pipe connected with the water inlet 10 of the reactor body 1 and enters the reactor together, the sewage passes through a granular sludge layer of the reaction zone 15, the granular sludge is sludge strain which is directionally cultured, for example, the granular sludge in the methanogenic anaerobic reactor is methanogenic bacteria, and the granular sludge in the anaerobic ammonia oxidation reactor is anaerobic ammonia oxidation bacteria. Pollutants are degraded by the granular sludge to generate gas, then water flow rises together with the granular sludge and generated bubbles to enter the cyclone area 2, cyclone flow of the water flow is realized through the drainage effect of the two layers of the rotary vanes, the granular sludge and the bubbles are effectively separated by utilizing centrifugal force, the granular sludge with relatively high density rises along the wall of the cylinder, the bubbles with low density rise in the center, and the separation of a solid phase and a gas phase is realized. The rivers carry dirty mud and bubble and continue to rise to three-phase separation zone 5, because the cross-sectional area grow, the rivers velocity of flow diminishes, further increases the rivers disturbance, peels off the bubble that does not separate out from granular sludge, and the bubble rises to three-phase separator mud bucket 4 in, discharges to atmosphere or gaseous absorbing device through three-phase separator's cylinder. The granular sludge, after being degassed in the triphase separator hopper 4, is deflected downward through the internal reflux zone 3 and falls into the reaction zone 15 of the reactor. The water phase separated by mud and gas enters the effluent area 16, part of the water phase overflows to the effluent weir 6, and the effluent is discharged to other reaction units. Part of the effluent flows back to the water inlet 10 through the external circulating pump 9, and the purposes of diluting the reactor inlet water and increasing the ascending flow rate are achieved.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. An anaerobic reactor, characterized in that: including reactor body (1), reactor body (1) is from up being provided with in order down:

the water distribution area (14) is an inverted cone, the bottom of the water distribution area is provided with a water inlet (10), and the water inlet (10) is connected with a water inlet pipe;

a reaction zone (15) which is cylindrical;

the reactor comprises a water outlet area (16), a cyclone separator (8) is fixed inside the water outlet area, the cyclone separator (8) comprises a sleeve (11), a double-layer cyclone mechanism (12) fixedly connected to the inner wall of the sleeve (11) and a water inlet (13) at the lower end of the sleeve (11), a cyclone area (2) is formed inside the cyclone separator (8), an inner backflow area (3) is formed outside the cyclone separator (8), a three-phase separator is arranged above the cyclone separator (8), the three-phase separator comprises a cylindrical barrel and a three-phase separator mud bucket (4) connected to the lower end of the cylindrical barrel, the upper end of the cylindrical barrel is fixedly connected with the top of the reactor body (1), a water outlet weir (6) is arranged outside the cylindrical barrel and used for discharging water from the reactor body (1), a three-phase separation area (5) is formed above the cyclone separator (8) inside the reactor body (1), the three-phase separator separates the three-phase separation area (5) into an inner part and an outer part, an outer circulation opening is formed in the side wall of the reactor body (1) below the water outlet weir (6), the outer circulation opening is connected with an outer backflow pipe (9), and the other end of the outer circulation pump (9) is communicated with an outer circulation pump.

2. An anaerobic reactor according to claim 1, characterized in that the height to diameter ratio of the reaction zone (15) is between 5 and 8.

3. An anaerobic reactor according to claim 1, characterized in that the sleeve (11) is cylindrical, the double-layer swirl mechanism (12) consists of two layers of raised vanes, each layer is provided with 6 vanes which are evenly distributed, the vanes rotate upwards along the inner wall of the sleeve (11), the starting end is a pointed end, the vanes gradually widen with the rotation, the tail end forms a smooth closing-up, and a water diversion groove is formed between two adjacent vanes.

4. An anaerobic reactor according to claim 1, characterized in that the water inlet (13) is trumpet shaped, the cross-sectional area of the bottom end of the water inlet (13) being larger than the cross-sectional area of the top end of the reaction zone (15).

5. An anaerobic reactor according to claim 4, characterized in that the side walls of the water inlets (13) are angled from the horizontal at an angle of 40 to 60 degrees.

6. An anaerobic reactor according to claim 1, characterized in that the cyclone separator (8) is fixed inside the water outlet zone (16) of the reactor body (1) by two fixing strips (7), one end of the fixing strip (7) being fixedly connected with the outer wall of the sleeve (11) and the other end being fixedly connected with the inner wall of the reactor body (1).

7. An anaerobic reactor according to claim 1, characterized in that the three-phase separator hopper (4) is in the shape of a circular truncated cone, and the side wall of the three-phase separator hopper (4) forms an angle of 40 to 60 degrees with the horizontal.