CN115448450A - Two-phase anaerobic fermentation device - Google Patents

Abstract

The invention discloses a two-phase anaerobic fermentation device, which relates to the technical field of anaerobic fermentation and comprises the following components: the wall plate, the aeration stirring rod I and the aeration stirring rod II are arranged on the wall plate; the feeding hole is connected with the cavity formed by the wall plates and the outside of the cavity; the discharge port is connected with a BOD sensor which is used for detecting the water quality of the discharge port; the cover plate covers a cavity formed by the wall plate, and is provided with an air hole which is connected with the flowmeter sensor through a pipeline; the gas storage tank is connected with the flowmeter sensor through a pipeline; one end of the aeration pump is connected with the gas storage tank, and the other end of the aeration pump is connected with the first aeration stirring rod and the second aeration stirring rod; the controller realizes the monitoring of the gas production rate, when the gas production rate is lower, the air pump is controlled to perform biogas backflow aeration, the internal circulation effect is enhanced, sludge particles in the inner part are expanded, the mass transfer is enhanced, the BOD sensor monitors the water quality condition of the outlet water in real time, and the aeration backflow is performed through the first aeration stirring rod and the second aeration stirring rod, so that the reaction rate is accelerated.

Description

A two-phase anaerobic fermentation device

technical field

The invention relates to the technical field of microbial anaerobic fermentation, in particular to a two-phase anaerobic fermentation device.

Background technique

Anaerobic biological treatment has the characteristics of low investment and recyclable energy, and is the main method for treating high-concentration organic wastewater. At present, the common reactors have their own advantages and disadvantages. For example, the internal circulation reactor can complete the corresponding cycle through its own anaerobic fermentation reaction without additional power drive. It is easy to cause unstable effluent water volume and relatively unstable effluent water quality. At the same time, when performing anaerobic fermentation with high solid concentration, stirring is required, but aeration and reflux alone cannot fully stir.

For example, the Chinese invention patent application with the notification number CN202111251697 discloses an anaerobic fermentation circulation device, including: a wall plate surrounded by a wall plate to form an internal cavity, and a circulation chamber 1 and a circulation chamber 2 are arranged in the cavity; The cavity formed by the feed port and the feed port is connected to the cavity formed by the wall plate and the outside of the cavity; the circulation chamber 1 includes: the air lift slot 1, the three-phase separator 1, one end of the three-phase separator 1 is connected to the air lift slot 1, and the descending chamber 1 , the upper side of the descending chamber is connected to the feed port, the anaerobic zone one, and the anaerobic zone one are connected to the lower side of the descending chamber; the partition one and the partition one are set under the circulation chamber one; the circulation chamber two and the circulation chamber one are horizontal Layout, circulation chamber 2 includes: three-phase separator 2, descending chamber 2, anaerobic zone 2, anaerobic zone 2 is connected to the lower side of descending chamber 2; discharge port, the cavity formed by the discharge port connecting the wall plate and the cavity External: cover plate, the cover plate covers the cavity formed by the wall plate, and the cover plate is provided with air holes, which cannot monitor the water quality of the effluent, cannot visually judge the reaction situation, and cannot carry out subsequent process treatment in time.

Contents of the invention

The purpose of the present invention is to provide a two-phase anaerobic fermentation device, which aims to solve the problem that the two-phase anaerobic fermentation device in the prior art only relies on the internal circulation of gas, and when the water quality of the influent is not stable, it is easy to cause unstable water output. , the water quality of the effluent is relatively unstable, and the follow-up process treatment cannot be carried out in time;

In order to achieve the above object, the present invention adopts the following technical solutions: a two-phase anaerobic fermentation device, comprising: a wall plate, surrounded by a wall plate to form an internal cavity, and a circulation chamber 1 and a circulation chamber 2 are arranged in the cavity. Room 1 and Circulation Room 2 are respectively equipped with aeration stirring rod 1 and aeration stirring rod 2; feeding port, the feeding port is connected to the cavity formed by the wall plate and the outside of the cavity; the discharging port is connected to the BOD sensor , the BOD sensor is used to detect the water quality of the outlet; the cover plate, the cover plate covers the cavity formed by the wall plate, and the cover plate is provided with air holes, and the air holes are connected to the flowmeter sensor through the pipeline; the gas storage tank, the gas storage tank is connected through the pipeline Flow meter sensor; aeration pump, one end of the aeration pump is connected to the air storage tank, the other end is connected to aeration stirring rod 1 and aeration stirring rod 2; controller, the controller is connected to the flow meter sensor, aeration pump and BOD sensor;

In the above technical solution, the present invention connects the gas flow meter sensor through the stomata to realize the monitoring of gas production. When the gas production is low, the controller controls the aeration pump to perform biogas backflow aeration, thereby enhancing the internal circulation effect and realizing enhanced mass transfer. ;The BOD sensor is connected to the discharge port of the reactor, and the BOD sensor monitors the water quality of the effluent in real time. According to the comprehensive sewage discharge standard, when the BOD content of the water body is less than 20mg/L, the discharge port is controlled by the controller, and then at the feed port The feed continues to react, and the aeration and reflux effect is enhanced through the aeration stirring rod 1 and the aeration stirring rod 2 to speed up the reaction.

Further, according to the embodiment of the present invention, the circulation chamber 1 includes: a gas lift slot 1, a three-phase separator 1, the three-phase separator 1 is connected to the gas lift slot 1, a descending chamber 1, and the upper side of the descending chamber 1 is connected to the feed Anaerobic zone 1 and anaerobic zone 1 are connected to the lower side of the descending chamber; partition 1 and partition 1 are arranged below the circulation chamber 1; circulation chamber 2 and circulation chamber 1 are arranged horizontally, and the circulation chamber 2 includes: three-phase Separator 2, descending chamber 2, anaerobic zone 2, anaerobic zone 2 is connected to the lower side of descending chamber 2, circulation chamber 2 is provided with air lift joint 2, air lift joint 2 is connected to one end of three-phase separator 2, circulation chamber 2 There is also a partition 2, and the partition 2 and the partition 1 are distributed up and down; the partition 2 is arranged on the upper side of the descending chamber 2; the return slot 1 is formed between the three-phase separator 1 and the partition 1, and the return slot is set at one place There is a gas-blocking plate 1, and the gas-blocking plate 1 is arranged on the partition 1; a reflow slot 2 is formed between the three-phase separator 2 and the wall plate, and the gas-blocking plate 2 is arranged at the 2nd reflow slot, and the gas-blocking plate 2 is set on the wall board.

Further, according to an embodiment of the present invention, the aeration stirring rod 1 includes: stirring rod 1, aeration rod 1, stirring blade 1, aeration rod 2, and stirring blade 2. The air stirring rod-is connected to the bottom of the circulation chamber-by a rotary connection piece-rotatably.

Further, according to the embodiment of the present invention, the aeration stirring rod 2 includes: stirring rod 2, aeration rod 3, stirring blade 3, aeration rod 4, and stirring blade 4. The gas stirring rod 2 is rotatably connected to the bottom of the circulation chamber 2 through the rotatable connector 1.

Furthermore, according to the embodiment of the present invention, the first stirring blade is arranged above the first aeration rod, and the second stirring blade (196) is arranged above the second aeration rod.

Furthermore, according to the embodiment of the present invention, the third stirring blade is arranged above the third aeration rod, and the fourth stirring blade is arranged above the fourth aeration rod.

Furthermore, according to an embodiment of the present invention, at least 3 air holes are set on the first aeration rod, the first stirring blade is set to be inclined by 15°-75° relative to the horizontal position, and at least 3 air holes are set on the second aeration rod, The second stirring blade is set to be inclined at 15°-75° relative to the horizontal position.

Furthermore, according to an embodiment of the present invention, at least 3 air holes are set on the third aeration rod, the third stirring blade is set to be inclined at 15°-75° relative to the horizontal position, and at least 3 air holes are set on the fourth aeration rod, The four stirring blades are set to incline 15°-75° relative to the horizontal position.

Further, according to an embodiment of the present invention, the discharge port is also connected with a discharge water tank.

The invention realizes the monitoring of the gas production through the gas flow meter sensor. When the gas production is low, the controller controls the aeration pump to perform biogas backflow aeration, thereby enhancing the internal circulation effect and realizing enhanced mass transfer; the BOD sensor monitors the effluent water quality in real time When the BOD content of the water body is less than 20mg/L, the controller controls the discharge of the material at the discharge port, and then feeds the material at the feed port to continue the reaction; and through the aeration rod 1, aeration rod 2, aeration rod 3, The pores on the aeration rod 4 are aerated. When the gas passes through the first stirring blade, the second stirring blade, the third stirring blade and the fourth stirring blade, the first stirring blade, the second stirring blade, the third stirring blade and the fourth stirring blade are driven to rotate. The mechanical agitation driven by the airflow, combined with aeration and reflux, can also achieve sufficient agitation and speed up the reaction rate during anaerobic fermentation with high solid concentration.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural schematic diagram of a two-phase anaerobic fermentation device of the present invention.

Fig. 2 is a schematic structural view of the aeration stirring rod 1 of a two-phase anaerobic fermentation device of the present invention.

Fig. 3 is a schematic structural view of the aeration stirring bar 2 of a two-phase anaerobic fermentation device of the present invention.

In the attached picture

1. Feed inlet 2. Gas slot 1 3. Three-phase separator 1

4. Descent chamber 1 5. Anaerobic zone 1 6. Air blocking plate 1

7. Partition one 8. Partition two 9. Gas joint two

10. Three-phase separator two 11. Falling chamber two 12. Anaerobic zone two

13. Air blocking plate 2 14. Outlet 15. Air hole

16. Flow meter sensor 17. Air storage tank 18. Aeration pump

19. Aeration stirring rod 1 20. Aeration stirring rod 2 21. BOD sensor

22. Discharging water tank 23. Controller 191. Stirring rod 1

192. Rotary connector 1 193. Aeration rod 1 194. Stirring blade 1

195. Aeration rod 2 196. Stirring blade 2 201. Stirring rod 2

202. Rotary connector 2 203. Aeration rod 3 204. Stirring blade 3

205. Aeration rod 4 206. Stirring blade 4

detailed description

In order to clearly and completely describe the purpose, technical solution, and advantages of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the present invention, rather than all embodiments, and are only used to explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. All other embodiments obtained under the premise of creative work all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom" ", "side", "vertical", "horizontal" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the It should not be construed as limiting the invention that a device or element must have a particular orientation, be constructed, and operate in a particular orientation.

For purposes of simplicity and illustration, the principles of the embodiments are mainly described with reference to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. However obvious it is. To those of ordinary skill in the art, the embodiments may in practice not be limited to these specific details. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring the embodiments. In addition, all the embodiments can be used in combination with each other.

As shown in Figure 1, the present embodiment discloses a two-phase anaerobic fermentation device, comprising: a wall plate, the wall plate surrounds and forms an internal cavity, and a circulation chamber 1 and a circulation chamber are arranged in the cavity Two, the circulation chamber one and the circulation chamber two are respectively provided with an aeration stirring rod one 19 and an aeration stirring rod two 20; a feed port 1, the feed port 1 is connected to the cavity formed by the wall plate With the outside of the cavity; the discharge port 14, the discharge port 14 is connected to the BOD sensor 21, and the BOD sensor 21 is used to detect the water quality of the discharge port 14; the cover plate, the cover plate covers the wall plate Formed cavity, the cover plate is provided with an air hole 15, the air hole 15 is connected to the flow meter sensor 16 through a pipeline; an air storage tank 17, and the air storage tank 17 is connected to the flow meter sensor 16 through a pipeline; an aeration pump 18 , one end of the aeration pump 18 is connected to the air storage tank 17, and the other end is connected to the aeration stirring rod one 19 and the aeration stirring rod two 20; the controller 23, the controller 23 is connected to the flow rate meter sensor 16, the aeration pump 18 and the BOD sensor 21.

Specifically, the circulation chamber one includes: air lift slot one 2, a three-phase separator one 3, one end of the three phase separator one 3 is connected to the air lift slot one 2, a descending chamber one 4, and the descending chamber The upper side of -4 communicates with the feed port 1, the anaerobic zone -5, and the anaerobic zone -5 communicates with the lower side of the descending chamber -4; the separator -7, the separator -7 is arranged in the circulation chamber Below one; said circulation chamber two and said circulation chamber one are arranged horizontally, said circulation chamber two comprises: three-phase separator two 10, descending chamber two 11, anaerobic zone two 12, said anaerobic zone two 12 communicates with the lower side of the second descending chamber 11, the second circulation chamber is provided with an air lift slot two 9, and the second air lift slot 9 is connected to one end of the three-phase separator two 10, and the second circulation chamber is also provided with There is a partition two 8, and the partition two 8 and the partition one 7 are distributed up and down; the partition two 8 is arranged on the upper side of the descending chamber two 11; the three-phase separator one 3 is connected to the A reflow slot 1 is formed between the partitions 7, and a gas baffle 6 is arranged at one of the reflux slots, and the gas baffle 6 is arranged on the partition 7; the three-phase separator 2 A second reflow slot is formed between 10 and the wall plate, and a second gas blocking plate 13 is arranged at the second reflow slot, and the second gas blocking plate 13 is arranged on the wall plate.

As shown in Figure 2, the aeration stirring rod one 19 includes: stirring rod one 191, aeration rod one 193, stirring blade one 194, aeration rod two 195, stirring blade two 196, the bottom of the stirring rod one 191 A rotating connection part 192 is provided, and the aeration stirring rod 19 is rotatably connected to the bottom of the circulation chamber 1 through the rotating connecting part 191 .

Specifically, the first stirring blade 194 is disposed above the first aeration rod 193 , and the second stirring blade 196 is disposed above the second aeration rod 195 .

More specifically, at least 3 air holes are set on the aeration rod one 193, and the agitation blade one 194 is set to be inclined at 15°-75° relative to the horizontal position, such as specifically set at 45°, the aeration rod one At least 3 air holes are set on the second 195, and the second stirring blade 196 is set to be inclined at 15°-75° relative to the horizontal position, such as specifically set to 45°; the air holes on the first aeration rod 193 are set to be more The smaller the distance between the air holes away from the stirring rod-191, the larger the air holes farther away from the stirring rod-191 are. , the more the stirring blade one 194 is away from the stirring rod one 191, the greater the force; the air holes on the aeration rod two 195 are set to be farther away from the stirring rod one 191. The larger the pores, the larger and denser the air bubbles are the farther away from the stirring rod one 191 when the aeration pump is working. When the bubbles rise to the stirring blade two 196, the farther the stirring blade two 196 is away from the stirring rod one 191, the greater the force will be. It can drive the first stirring blade 194 and the second stirring blade 196 to rotate and stir more efficiently, and cooperate with the aeration and backflow of air bubbles to achieve the effect of fully stirring the circulation chamber one.

As shown in Figure 3, the aeration stirring rod two 20 includes: stirring rod two 201, aeration rod three 203, stirring blade three 204, aeration rod four 205, stirring blade four 206, the bottom of the stirring rod two 201 A second rotary connection 202 is provided, and the second aeration stirring rod 20 is rotatably connected to the bottom of the second circulation chamber through the first rotary connection 201 .

Specifically, the third stirring blade 204 is disposed above the third aeration rod 203 , and the fourth stirring blade 206 is disposed above the fourth aeration rod 205 .

More specifically, at least 3 air holes are provided on the third aeration rod 203, and the third stirring blade 204 is set to be inclined at 15°-75° relative to the horizontal position, such as specifically set at 45°, the aeration rod three At least 3 air holes are set on four 205, and the stirring blade four 206 is set to be inclined 15°-75° relative to the horizontal position, such as specifically set to 45°; the air holes on the aeration rod three 203 are set to be farther away The smaller the distance between the air holes of the stirring rod two 201, the larger the air holes are the farther away from the stirring rod two 201. When the aeration pump is working, the farther away from the stirring rod two 201, the larger and denser the air bubbles will be. When the air bubbles rise to the three stirring blades 204 , the farther the stirring blade three 204 is away from the stirring rod two 201, the greater the force is; the air holes on the aeration rod four 205 are set to be farther away from the stirring rod two 201, the smaller the distance between the pores is, and the farther away from the stirring rod two 201 The bigger the stomata, the bigger and denser the air bubbles are the farther away from the stirring rod 201 when the aeration pump is working. More efficiently drive the third stirring blade 204 and the fourth stirring blade 206 to rotate and stir, cooperate with the aeration and reflux of air bubbles, and achieve the effect of fully stirring the second circulation chamber.

In the fermentation process, carbon layers can also be set on stirring blades one 194, stirring blades two 196, stirring blades three 204, and stirring blades four 206, and use the carbon layer as a conductor material to intervene between the anaerobic oxidizing bacteria and the methane bacteria. Electron transfer enables the electrons produced by Geobacter to decompose organic matter to be directly used by methanogens to reduce carbon dioxide to methane, increase methane production and sludge decomposition speed, improve sludge treatment efficiency, and save investment.

Although the illustrative specific embodiments of the present invention have been described above, so that those skilled in the art can understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as each As long as the changes are within the spirit and scope of the present invention defined and determined by the appended claims, all inventions and creations utilizing the concept of the present invention are included in the protection list.

Claims (9)

1. A two-phase anaerobic fermentation device, characterized in that, comprising: A wall plate, the wall plate surrounds and forms an internal cavity, and a circulation chamber 1 and a circulation chamber 2 are arranged in the cavity, and the circulation chamber 1 and the circulation chamber 2 are respectively provided with an aeration stirring rod 1 ( 19), aeration stirring rod two (20); A feed port (1), the feed port (1) connecting the cavity formed by the wall plate and the outside of the cavity; A discharge port (14), the discharge port (14) is connected to a BOD sensor (21), and the BOD sensor (21) is used to detect the water quality of the discharge port (14); A cover plate, the cover plate covers the cavity formed by the wall plate, the cover plate is provided with an air hole (15), and the air hole (15) is connected to the flow meter sensor (16) through a pipeline; Gas storage tank (17), described gas storage tank (17) is connected flow meter sensor (16) by pipeline; An aeration pump (18), one end of the aeration pump (18) is connected to the air storage tank (17), and the other end is connected to the aeration stirring rod one (19) and the aeration stirring rod two (20) ; A controller (23), the controller (23) is connected to the flow meter sensor (16), the aeration pump (18) and the BOD sensor (21). 2. A kind of two-phase anaerobic fermentation device according to claim 1, it is characterized in that, described circulation room one comprises: air lift slot one (2), three-phase separator one (3), described three-phase One end of the separator one (3) is connected to the air lift slot one (2), the descending chamber one (4), the upper side of the descending chamber one (4) is connected to the feed inlet (1), and the anaerobic zone one ( 5), the anaerobic zone one (5) communicates with the lower side of the descending chamber one (4); partition one (7), and the partition one (7) is arranged below the circulation chamber one; The circulation chamber two and the circulation chamber one are horizontally arranged, and the circulation chamber two comprises: three-phase separator two (10), descending chamber two (11), anaerobic zone two (12), the anaerobic Zone two (12) communicates with the lower side of the descending chamber two (11), and the circulation chamber two is provided with an air lift slot two (9), and the air lift slot two (9) is connected to the three-phase separator two ( 10), the circulation chamber two is also provided with two partitions (8), and the two partitions (8) and the one (7) of the partition are distributed up and down; the two partitions (8) are arranged On the upper side of the descending chamber two (11); A reflow slot 1 is formed between the three-phase separator one (3) and the partition plate one (7), and a gas choke plate 1 (6) is provided at one of the reflux slots, and the gas baffle plate 1 (6) ) is set on the partition one (7); A reflow slot two is formed between the three-phase separator two (10) and the wall plate, and a gas choke plate two (13) is arranged at the two reflow slots, and the gas choke plate two (13) is arranged on the on the siding. 3. A kind of two-phase anaerobic fermentation device according to claim 1, is characterized in that, described aeration stirring rod one (19) comprises: stirring rod one (191), aeration rod one (193), stirring Blade one (194), aeration rod two (195), stirring blade two (196), the bottom of the stirring rod one (191) is provided with a rotating connector one (192), and the aeration stirring rod one (19) It is rotatably connected to the bottom of the circulation chamber 1 through the rotatable connector 1 (191). 4. A kind of two-phase anaerobic fermentation device according to claim 1, is characterized in that, described aeration stirring bar two (20) comprises: stirring bar two (201), aeration bar three (203), stirring Blade three (204), aeration rod four (205), stirring blade four (206), the bottom of the stirring rod two (201) is provided with a rotating connector two (202), and the aeration stirring rod two (20) It is rotatably connected to the bottom of the circulation chamber 2 through the rotatable connector 1 (201). 5. A kind of two-phase anaerobic fermentation device according to claim 3, characterized in that, said stirring blade one (194) is arranged above said aeration rod one (193), and said stirring blade two (196) ) is arranged above the aeration rod two (195). 6. A kind of two-phase anaerobic fermentation device according to claim 4, characterized in that, said stirring blade three (204) is arranged above said aeration rod three (203), said stirring blade four (206) ) is arranged above the aeration bar four (205). 7. A two-phase anaerobic fermentation device according to claim 5, characterized in that at least 3 air holes are set on said aeration rod one (193), and said stirring blade one (194) is set to be relatively It is inclined at 15°-75° at the horizontal position, at least 3 air holes are arranged on the second aeration rod (195), and the second stirring blade (196) is set at an inclination of 15°-75° relative to the horizontal position. 8. A two-phase anaerobic fermentation device according to claim 6, characterized in that at least 3 air holes are set on the three aeration rods (203), and the three stirring blades (204) are set to be relatively It is inclined at 15°-75° at the horizontal position, at least 3 air holes are arranged on the four aeration rods (205), and the four stirring blades (206) are set at an inclination of 15°-75° relative to the horizontal position. 9. A two-phase anaerobic fermentation device according to claim 1, characterized in that, the discharge port (14) is also connected with a discharge water tank (22).

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