CN219079235U

CN219079235U - External circulation anaerobic reactor

Info

Publication number: CN219079235U
Application number: CN202223488041.9U
Authority: CN
Inventors: 于晓禹; 鹿东生; 王小菊
Original assignee: Shandong Lanlvqing Environmental Protection Technology Co ltd
Current assignee: Shandong Lanlvqing Environmental Protection Technology Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-26
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses an external circulation anaerobic reactor, which comprises a reactor, wherein a water distribution device, a first-stage three-phase separator and a second-stage three-phase separator are sequentially arranged in the reactor from bottom to top, a gas-liquid separator is fixedly arranged at the top of the reactor, the first-stage three-phase separator and the second-stage three-phase separator are respectively connected with the gas-liquid separator through a first-stage biogas pipe and a second-stage biogas pipe, the gas-liquid separator is communicated with the bottom of the reactor through a return pipe, the water distribution device comprises a plurality of water distribution pipes, a plurality of spiral shells with water wheels arranged in the water distribution pipes in a staggered manner are arranged on the water distribution pipes, stirring paddles are arranged on the water wheels through rotating shafts, a water inlet of each spiral shell is detachably connected with a water outlet of the water distribution pipe, and a circulating water port of the reactor 1 is connected with a circulating pump through a first circulating pipe and the lower part of the reactor through a second circulating pipe. The utility model has simple structure, can stir the sludge sunk at the bottom without external power, and avoids deposition.

Description

External circulation anaerobic reactor

Technical Field

The utility model relates to the technical field of sewage treatment equipment, in particular to an external circulation anaerobic reactor.

Background

The external circulation anaerobic reactor is developed on the basis of an up-flow anaerobic sludge bed, adopts an external circulation system and a granular sludge technology, is an improved type of a traditional expanded granular sludge bed reactor, and belongs to an efficient anaerobic reactor. The sewage enters from the bottom, is mixed with the sludge for reaction, and then is separated in three phases at the upper part. The existing partial external circulation anaerobic reactor is easy to cause sludge accumulation or blockage of water distribution holes at the bottom. The Chinese patent application with the publication number of CN114455698A discloses an external circulation type efficient multistage anaerobic reactor, which comprises a main body device, wherein an anaerobic reaction tank is arranged in the main body device, a water distribution component is arranged on the bottom surface of the inner wall of the anaerobic reaction tank, a first three-stage separator is arranged above the water distribution component, the external heat insulation component is fixedly connected with the outer wall of the anaerobic reaction tank, a fluidized bed reaction chamber is arranged in the anaerobic reaction tank, water distribution is sprayed out through a drainage through hole and a water distribution outlet hole on a rotary hollow wing sheet, uniform water distribution at the bottom of the anaerobic reaction tank is realized by rotation, and local sludge deposition is avoided. However, the water distribution component of the device has a complex and precise structure and high cost, and the use reliability is affected by the complex structure.

Disclosure of Invention

The utility model provides an external circulation anaerobic reactor for overcoming the defects in the prior art.

The utility model is realized by the following technical scheme:

the utility model provides an outer circulation anaerobic reactor, includes the reactor, water distribution device, one-level three-phase separator, second grade three-phase separator are installed in proper order from bottom to top to the inside of reactor, the top fixed mounting of reactor has gas-liquid separator, one-level three-phase separator, second grade three-phase separator are connected with gas-liquid separator through one-level biogas pipe and second grade biogas pipe respectively, gas-liquid separator communicates with the reactor bottom through the back flow, water distribution device includes a plurality of water distribution pipes, the spiral case that a plurality of internal distributions of water distribution are installed on the water distribution pipe in a staggered manner, stirring paddle is installed through the pivot to the water wheel, the water inlet and the delivery port of water distribution pipe are dismantled and are connected, the circulating water gap of reactor is connected with the circulating pump through first circulating pipe, the circulating pump is connected with the lower part of reactor through the second circulating pipe.

The spiral case still with the first end fixed connection of dead lever, the second end of dead lever is with installing the checkpoint fixed connection on the water distribution pipe.

The reactor is internally provided with a mixing pipe, the mixing pipe is positioned below the primary three-phase separator and comprises a lower bell mouth section, an equal-diameter section and an upper bell mouth section which are sequentially and fixedly installed together, and the water outlet end of the second circulating pipe extends into the equal-diameter section from the lower bell mouth section.

And a heating pipe section is arranged on the first circulating water pipe.

The heating pipe section comprises an outer pipe body sleeved on the first circulating water pipe, and an electric heating component is arranged between the outer pipe body and the first circulating water pipe.

The top fixed mounting of outer body has the third flange, fixed mounting has the fourth flange that matches with the third flange on the first circulating water pipe, the bottom fixed mounting of outer body has the first flange, still includes a second flange that matches with the first flange, the middle part of second flange is equipped with an internal thread hole, be equipped with on the first circulating water pipe with internal thread hole assorted external screw thread.

The utility model has the following technical effects:

the utility model has simple structure, water in the water distribution pipes enters the spiral case to impact the water wheel, so that the water wheel rotates, thereby driving the stirring blade to rotate, stirring the sludge sunk at the bottom, avoiding deposition, and each water distribution pipe is provided with a plurality of water distribution components in a staggered way, thus being capable of covering the bottom of the whole reactor, having better anti-settling agent effect and needing no additional power. The reactor is internally provided with a mixing pipe, sewage at the lower part of the reactor is circulated under the action of a circulating pump, so that the mixing with sludge is quickened, and meanwhile, the sludge deposition is prevented.

Drawings

The utility model is further described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic structural diagram of the water distribution device.

Fig. 3 is a schematic diagram of the structure at B in fig. 1.

Fig. 4 is a schematic diagram of the structure at a in fig. 1.

In the figure, a 1-reactor, a 2-water distribution device, a 3-mixing pipe, a 4-return pipe, a 5-first-stage three-phase separator, a 6-first-stage biogas pipe, a 7-second-stage three-phase separator, an 8-second-stage biogas pipe, a 9-gas-liquid separator, a 10-gas outlet, a 11-water outlet, a 12-water circulation port, a 13-heating pipe section, a 14-first water circulation pipe, a 15-circulation pump, a 16-second circulation pipe, a 17-water distribution component, a 18-water distribution pipe, a 19-fixed rod, a 20-stirring blade, a 21-volute, a 22-pipe joint, a 23-water outlet, a 24-water inlet, a 25-gate, a 26-outer pipe body, a 27-electric heating component, a 28-first flange, a 29-second flange, a 30-first bolt, a 31-third flange, a 32-second bolt and a 33-fourth flange.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "mounted" on another element, it can be directly or indirectly connected to the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the utility model, "a number" means one or more than one; the meaning of "a plurality of" is two or more, unless specifically defined otherwise. The "fixed connection" may be a bolted connection, welded, interference fit, integrally formed, or the like, as is known in the art. As long as the fixed connection can be realized, the corresponding components can normally function.

Fig. 1 to 4 show an embodiment of the present utility model. The embodiment provides an external circulation anaerobic reactor, which comprises a reactor 1, wherein a water distribution device 2, a primary three-phase separator 5 and a secondary three-phase separator 7 are sequentially arranged in the reactor 1 from bottom to top. The top of the reactor 1 is fixedly provided with a gas-liquid separator 9, and the primary three-phase separator 5 and the secondary three-phase separator 7 are respectively connected with the gas-liquid separator 9 through a primary biogas pipe 6 and a secondary biogas pipe 8. The gas-liquid separator 9 is communicated with the bottom of the reactor 1 through a return pipe 4.

The water distribution device 2 comprises a plurality of water distribution pipes 18 which are respectively connected with a water inlet pipe, and a plurality of water distribution components 17 are arranged on two sides of each water distribution pipe 18 in a staggered manner. The water distribution assembly 17 comprises a volute 21 internally provided with a water wheel, a rotating shaft is fixedly arranged on the water wheel, and stirring blades 20 are fixedly arranged at the bottom of the rotating shaft. The water inlet 24 of the volute 21 is connected with the water outlet 23 of the water distribution pipe 18 through the pipe joint 22, wherein the outer wall of the water inlet 24 is tangential with the outer wall of the volute 21.

The spiral case 21 is also fixedly connected with the first end of the fixing rod 19, and the second end of the fixing rod 19 is fixedly connected with the checkpoint 25 installed on the water distribution pipe 18 for keeping the stability of the water distribution assembly 17.

The side wall of the reactor 1 is provided with a circulating water port 12, the circulating water port 12 is connected with the water inlet end of a circulating pump 15 through a first circulating water pipe 14, and the water outlet end of the circulating pump 15 is connected with a mixing pipe 3 fixedly arranged in the reactor 1 through a second circulating pipe 16. The mixing pipe 3 is positioned below the primary three-phase separator 5 and comprises a lower bell mouth section, an equal-diameter section and an upper bell mouth section which are fixedly installed together in sequence, and the water outlet end of the second circulating pipe 16 extends into the equal-diameter section from the lower bell mouth section, and the equal-diameter section is fixedly connected with the inner wall of the reactor 1 through a connecting rod. Wherein the circulating water gap 12 is positioned between the first-stage three-phase separator 5 and the second-stage three-phase separator 7.

The first circulating water pipe 14 is provided with a heating pipe section 13 which comprises an outer pipe body 26 sleeved on the first circulating water pipe 14, and an electric heating component 27 is arranged between the outer pipe body 26 and the first circulating water pipe 14. Specifically, a third flange 31 is fixedly installed on the top of the outer pipe 26, a fourth flange 33 matched with the third flange 31 is fixedly installed on the first circulating water pipe 14, the fourth flange 33 is connected with the third flange 31 through a second bolt 32, and a second nut is installed on the second bolt 32.

The bottom of the outer pipe 26 is fixedly provided with a first flange 28, and further comprises a second flange 29 matched with the first flange 28, an internal threaded hole is formed in the middle of the second flange 29, external threads matched with the internal threaded hole are formed on the first circulating water pipe 14, the second flange 29 is screwed on the first circulating water pipe 14 and connected with the first flange 28 through a first bolt 30, and a first nut is mounted on the first bolt 30.

The gas-liquid separator 9 is provided with a gas outlet 10, the reactor 1 is also provided with a water outlet 11, and the water outlet 11 is positioned above the two-stage three-phase separator 7.

The lower part of the reactor 1 is provided with a temperature sensor located below the primary three-phase separator 5. The whole device is controlled by a controller.

The side wall of the reactor 1 is of a sandwich structure, and the inside is filled with heat-insulating materials.

When the sewage treatment device is used, sewage enters the water distribution pipe 18 from the water inlet pipe and then enters the water distribution assembly, the water wheel is impacted to rotate, the water wheel drives the stirring blade 20 to rotate, the sludge at the bottom of the reactor 1 is stirred, deposition is prevented, and the mixing of the sludge and the sewage is accelerated. Most of organic matters in the sewage are decomposed below the first-stage three-phase separator 5, three-phase separation is completed at the first-stage three-phase separator 5 along with the rising of the sewage, most of sludge is trapped, and the generated methane gas enters the gas-liquid separator 9. The residual organic matters in the sewage are trapped by the sludge after being deeply treated between the first-stage three-phase separator 5 and the second-stage three-phase separator 7, methane enters the gas-liquid separator 9, and the treated sewage is discharged from the water outlet 11. Part of sewage and sludge are pumped into the mixing pipe 3 by the circulating pump 15, water flow is sprayed out from the second circulating pipe 16, the flow speed is high in the constant diameter section, negative pressure is formed, sewage below the reactor is sucked in from the lower bell mouth section, and the sewage is sprayed out from the upper bell mouth section, so that mixing is rapidly completed. When the temperature in the reactor 1 is too low, the controller starts the electric heating part to heat the circulating water, so that the inside of the reactor 1 is kept at a relatively proper temperature. The water or the like generated in the gas-liquid separator 9 is returned to the bottom of the reactor 1 through the return pipe 4.

Claims

1. The utility model provides an outer circulation anaerobic reactor, includes reactor (1), water distribution device (2), one-level three-phase separator (5), second grade three-phase separator (7) are installed in proper order from bottom to top to the inside of reactor (1), the top fixed mounting of reactor (1) has gas-liquid separator (9), one-level three-phase separator (5), second grade three-phase separator (7) are connected with gas-liquid separator (9) through one-level biogas pipe (6) and second grade biogas pipe (8) respectively, gas-liquid separator (9) are through back flow (4) and reactor (1) bottom intercommunication, its characterized in that: the water distribution device (2) comprises a plurality of water distribution pipes (18), a plurality of spiral cases (21) with water wheels installed inside are installed on the water distribution pipes (18) in a staggered mode, stirring paddles (20) are installed on the water wheels through rotating shafts, a water inlet (24) of each spiral case (21) is detachably connected with a water outlet (23) of each water distribution pipe (18), a circulating water port (12) of the reactor (1) is connected with a circulating pump (15) through a first circulating water pipe (14), and the circulating pump (15) is connected with the lower portion of the reactor (1) through a second circulating pipe (16).

2. The external circulation anaerobic reactor according to claim 1, wherein: the volute (21) is fixedly connected with the first end of the fixing rod (19), and the second end of the fixing rod (19) is fixedly connected with the checkpoint (25) arranged on the water distribution pipe (18).

3. The external circulation anaerobic reactor according to claim 1 or 2, wherein: the reactor is characterized in that a mixing pipe (3) is further arranged in the reactor (1), the mixing pipe (3) is positioned below the primary three-phase separator (5) and comprises a lower bell mouth section, an equal-diameter section and an upper bell mouth section which are sequentially and fixedly arranged together, and the water outlet end of the second circulating pipe (16) extends into the equal-diameter section from the lower bell mouth section.

4. An external circulation anaerobic reactor according to claim 3, wherein: the first circulating water pipe (14) is provided with a heating pipe section (13).

5. The external circulation anaerobic reactor according to claim 4, wherein: the heating pipe section (13) comprises an outer pipe body (26) sleeved on the first circulating water pipe (14), and an electric heating component (27) is arranged between the outer pipe body (26) and the first circulating water pipe (14).

6. The external circulation anaerobic reactor according to claim 5, wherein: the top fixed mounting of outer body (26) has third flange (31), fixed mounting has fourth flange (33) with third flange (31) matching on first circulating water pipe (14), the bottom fixed mounting of outer body (26) has first flange (28), still includes a second flange (29) with first flange (28) matching, the middle part of second flange (29) is equipped with an internal thread hole, be equipped with on first circulating water pipe (14) with internal thread hole assorted external screw thread.