Multistage self-circulation anaerobic digestion reactor

Abstract

The utility model relates to the technical field of anaerobic digestion reaction, and discloses a multi-stage self-circulation anaerobic digestion reactor which comprises a reaction cylinder, an input pipe is fixedly connected to the upper surface of the reaction cylinder, a partition plate is fixedly connected to the inner wall of the reaction cylinder, a first-stage reaction chamber, a second-stage reaction chamber and a third-stage reaction chamber are arranged in the reaction cylinder, and the first-stage reaction chamber, the second-stage reaction chamber and the third-stage reaction chamber are arranged in the reaction cylinder. A motor is arranged on the upper surface of the reaction cylinder, a stirring assembly is arranged at the output end of the motor, the stirring assembly is used for promoting full contact between microorganisms and wastewater and comprises a rotating column, the interior of the rotating column is fixedly connected to the output end of the motor, and stirring blades are fixedly connected to the outer wall of the rotating column. According to the utility model, through the arrangement of the stirring mechanism, microorganisms are in full contact with wastewater, so that full reaction of the wastewater in the reaction chamber is effectively ensured, the reaction efficiency of the wastewater is further improved, and meanwhile, through the arrangement of the drainage plate, full reaction of the wastewater in the reaction chamber is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to anaerobic digestion reaction technical field especially relates to a multistage self -circulation anaerobic digestion reactor. BACKGROUND

[0002] Multistage self -circulation anaerobic digestion reactor has important application in wastewater treatment etc. field, it mainly through the effect of anaerobic microorganism, the organic matter in wastewater is decomposed and converted to reach the purpose of reducing pollutant content, realizes resource recovery etc., in practical application, the performance of reactor directly influences wastewater treatment effect and efficiency, therefore constantly improves and optimizes the structure and function of reactor to be very important.

[0003] Traditional anaerobic digestion reactor mainly relies on the natural flow of wastewater in the reactor, in this case, after wastewater enters the reactor, by the gravity and the natural diffusion of water flow slowly flows in the reaction chamber, microorganism is naturally distributed in wastewater and carries out the decomposition and conversion of organic matter, but due to lack of active stirring intervention, the mixing of microorganism and wastewater mainly relies on molecular diffusion and weak disturbance of water flow, which makes their contact relatively random and insufficient.

[0004] The lack of stirring structure in the prior art anaerobic digestion reactor makes microorganism and wastewater cannot fully contact, leading to limited reaction efficiency, in anaerobic digestion reaction, microorganism needs to fully contact with organic matter in wastewater to carry out decomposition and conversion efficiently, however, natural flow and diffusion mode cannot ensure that microorganism is uniformly distributed in wastewater, so that part of organic matter cannot be acted on by microorganism in time, prolongs the reaction required time, reduces the overall processing efficiency and finally affects the long-term stable operation of reactor and wastewater treatment capacity. UTILITY MODEL CONTENT

[0005] In order to make up for the above insufficient, the utility model provides a multistage self -circulation anaerobic digestion reactor, aims at improving the problem that microorganism and wastewater cannot fully contact in the prior art anaerobic digestion reactor due to lack of stirring structure, and further leading to limited reaction efficiency.

[0006] To achieve the above object, the utility model provides the following technical scheme: A multistage self -circulation anaerobic digestion reactor, including the reaction cylinder, the input pipe is fixedly connected on the reaction cylinder upper surface, the reaction cylinder inner wall is fixedly connected with the partition board, the inside of reaction cylinder is provided with first -stage reaction chamber, second -stage reaction chamber and third -stage reaction chamber, the reaction cylinder upper surface is provided with motor, motor output is provided with agitating component, the agitating component is used for promoting the sufficient contact of microorganism and wastewater, the agitating component includes the rotary column, the rotary column inside fixedly connected in the motor output, the rotary column outer wall is fixedly connected with the stirring vane, the rotary column outer wall is fixedly connected with the connecting strip, one side of the connecting strip outer wall is fixedly connected with the scraper.

[0007] Further, the input pipe is fixedly connected with a filter screen inside, and the filter screen is used for preliminary filtering of industrial wastewater.

[0008] Further, the reaction cylinder is fixedly connected with a flow guide pipe inside, and the flow guide pipe is provided with a control valve inside.

[0009] Further, the partition board is fixedly connected with a drainage plate inside, and the drainage plate is located below the flow guide pipe.

[0010] Further, the reaction cylinder is provided with an output hole inside, and the output hole is used for discharging wastewater into the next reaction chamber.

[0011] Further, the control valve is used for controlling the output of the flow guide pipe.

[0012] Further, the reaction cylinder is provided with a water pump outside, and the water pump is fixedly connected with a connecting pipe at the output end outside.

[0013] Further, the connecting pipe is fixedly connected inside the reaction cylinder.

[0014] The utility model has the advantages of:

[0015] 1、 in the utility model, the rotary column can rotate with the stirring vane and the scraper through the motor, so that the wastewater can be stirred through the stirring vane, the microorganism is fully contacted with the wastewater, the reaction is promoted, the scraper can scrape off the dirt produced by acidification reaction in the inner wall of the reaction cylinder while further stirring the wastewater, the dirt accumulation affecting the reaction is effectively prevented, the wastewater can be fully reacted in the reaction chamber, and the efficiency of wastewater reaction is further improved.

[0016] 2、 The utility model discloses, through the setting of filter screen, can carry out primary filtration to industrial wastewater, and remove big granule impurity, be favorable for the follow -up reaction's progress, provide the primary guarantee for ensuring wastewater treatment effect, simultaneously through the setting of drainage plate, can change the flowing direction of wastewater in the reaction chamber, make wastewater can evenly distribute in the reaction chamber, guarantee that wastewater can fully react in the reaction chamber, further improve the processing effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A three-dimensional structure schematic diagram of a multistage self-circulation anaerobic digestion reactor is provided for the utility model;

[0018] Figure 2 A reaction cylinder partial structure schematic diagram of a multistage self-circulation anaerobic digestion reactor is provided for the utility model;

[0019] Figure 3 A scraper partial structure schematic diagram of a multistage self-circulation anaerobic digestion reactor is provided for the utility model;

[0020] Figure 4 An output hole partial structure schematic diagram of a multistage self-circulation anaerobic digestion reactor is provided for the utility model.

[0021] LEGEND:

[0022] 1, reaction cylinder;2, input pipe;3, connecting pipe;4, water pump;5, motor;6, first stage reaction chamber;7, filter screen;8, partition plate;9, rotating column;10, connecting strip;11, scraper;12, control valve;13, stirring vane;14, second stage reaction chamber;15, third stage reaction chamber;16, draft tube;17, drainage plate;18, output hole. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] REFERENCE Figure 1 - Figure 3This utility model provides an embodiment of a multi-stage self-circulating anaerobic digester, comprising a reaction cylinder 1, an input pipe 2 fixedly connected to the upper surface of the reaction cylinder 1, a partition plate 8 fixedly connected to the inner wall of the reaction cylinder 1, and a first-stage reaction chamber 6, a second-stage reaction chamber 14, and a third-stage reaction chamber 15 arranged inside the reaction cylinder 1. In the first-stage reaction chamber 6, the hydrolysis and acidification reaction mainly takes place. Anaerobic microorganisms inside the reaction chamber can decompose large-molecule organic matter in wastewater into small-molecule substances. A motor 5 is arranged on the upper surface of the reaction cylinder 1, and an agitator is arranged at the output end of the motor 5. The agitation component is used to promote sufficient contact between microorganisms and wastewater. The agitation component includes a rotating column 9, with the output end of a motor 5 fixedly connected inside the rotating column 9. A stirring blade 13 is fixedly connected to the outer wall of the rotating column 9. To promote sufficient contact between microorganisms and wastewater, the motor 5 can be started, causing the rotating column 9 to rotate, which in turn drives the stirring blade 13 on its outer wall to rotate, thereby agitating the wastewater and ensuring sufficient contact between microorganisms and wastewater to promote the reaction. A connecting strip 10 is fixedly connected to the outer wall of the rotating column 9, and a scraper 1 is fixedly connected to one side of the outer wall of the connecting strip 10. 1. Simultaneously, the connecting strip 10 drives the scraper 11 to rotate. The rotation of the scraper 11 further agitates the wastewater and also scrapes off the scale generated by the acidification reaction on the inner wall of the reaction cylinder 1, preventing scale accumulation from affecting the reaction. A diversion plate 17 is fixedly connected inside the partition plate 8, and the diversion plate 17 is located below the guide pipe 16. A water pump 4 is installed on the outer wall of the reaction cylinder 1, and a connecting pipe 3 is fixedly connected to the output end of the water pump 4. During the reaction, the water pump 4 can circulate and extract the wastewater in the reaction cylinder 1 through the connecting pipe 3, so that the wastewater forms a circulation between the reaction chambers. The flow further improves reaction efficiency and treatment effect. After the hydrolysis and acidification reaction is completed in the first-stage reaction chamber 6, the wastewater is discharged into the second-stage reaction chamber 14 through the outlet hole 18 by the control valve 12. In the second-stage reaction chamber 14, anaerobic microorganisms continue to decompose and transform the organic matter in the wastewater. After the reaction is completed in the second-stage reaction chamber 14, the wastewater enters the third-stage reaction chamber 15 through the corresponding channel. The third-stage reaction chamber 15 carries out the final deep treatment to ensure that the organic matter in the wastewater is fully degraded and meets the discharge standards or the requirements for further treatment.

[0025] Reference Figure 2 - Figure 4The input pipe 2 is fixedly connected with a filter screen 7 inside, which can preliminarily filter the industrial wastewater entering the reaction cylinder 1, effectively removing large-particle impurities in the wastewater, thereby reducing the burden of the subsequent treatment process. The reaction cylinder 1 is also fixedly connected with a flow guide pipe 16 inside, which is equipped with a control valve 12 inside. Meanwhile, the reaction cylinder 1 is provided with an output hole 18, which plays a key role in discharging the wastewater into the next reaction chamber. The control valve 12 is responsible for precisely controlling the wastewater output of the flow guide pipe 16. In addition, the drain plate 17 arranged in the reaction cylinder 1 also plays an important role. When the wastewater passes through the control valve 12 and flows out of the output hole 18, the wastewater will first fall on the drain plate 17, and then the flow direction of the wastewater will change under the guidance of the drain plate 17, and then gradually move along the drain plate 17 to the output hole 18, and finally smoothly discharge into the next reaction chamber through the output hole 18. In this way, the distribution of the wastewater in the reaction chamber will be more uniform, which is of great significance to ensure that the wastewater can fully react in the reaction chamber, and provides strong support for the efficient and stable operation of the entire wastewater treatment process.

[0026] Working principle: The industrial wastewater enters the reaction cylinder 1 through the input pipe 2. The filter screen 7 inside the reaction cylinder 1 preliminarily filters the wastewater, removing large-particle impurities. At this time, the pretreated wastewater uniformly enters the first-stage reaction chamber 6 through the input pipe 2. In the first-stage reaction chamber 6, hydrolysis acidification reaction is mainly carried out. The anaerobic microorganisms inside the reaction chamber can decompose large-molecular organic matter in the wastewater into small-molecular substances. In order to promote the full contact between the microorganisms and the wastewater, the motor 5 can be started to drive the rotating column 9 to rotate, thereby driving the stirring blades 13 on the outer wall of the rotating column 9 to rotate, so as to stir the wastewater and make the microorganisms fully contact with the wastewater, promoting the reaction. At the same time, the connecting strip 10 drives the scraper 11 to rotate, which can further stir the wastewater and also scrape off the dirt generated by the acidification reaction on the inner wall of the reaction cylinder 1, preventing the accumulation of dirt from affecting the reaction.

[0027] After the hydrolysis acidification reaction is completed in the first-stage reaction chamber 6, the wastewater can be discharged into the second-stage reaction chamber 14 through the output hole 18 by the control valve 12. In the second-stage reaction chamber 14, the anaerobic microorganisms continue to decompose and convert the organic matter in the wastewater. After the reaction is completed in the second-stage reaction chamber 14, the wastewater enters the third-stage reaction chamber 15 through the corresponding channel, where the last deep treatment is carried out to ensure that the organic matter in the wastewater is fully degraded to meet the discharge standard or further processing requirements. During the reaction process, the water pump 4 can circulate and extract the wastewater in the reaction cylinder 1 through the connecting pipe 3, so as to form a circulating flow between the reaction chambers, further improving the reaction efficiency and treatment effect.

[0028] Through the setting of the flow guide plate 17, when the wastewater passes through the control valve 12 through the output hole 18, the wastewater will fall on the flow guide plate 17, and then the flow direction of the wastewater in the reaction chamber can be changed through the flow guide plate 17, and then through the output hole 18, the wastewater can be discharged into the next reaction chamber, so that it is more evenly distributed in the reaction chamber, effectively ensuring that the wastewater can be fully reacted in the reaction chamber.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A multistage self-circulating anaerobic digestion reactor comprising a reactor drum (1), characterized in that: The upper surface of the reaction cylinder (1) is fixedly connected with an input pipe (2), the inner wall of the reaction cylinder (1) is fixedly connected with a partition plate (8), the inside of the reaction cylinder (1) is provided with a first-stage reaction chamber (6), a second-stage reaction chamber (14) and a third-stage reaction chamber (15), the upper surface of the reaction cylinder (1) is provided with a motor (5), the output end of the motor (5) is provided with an agitating assembly, and the agitating assembly is used for promoting the sufficient contact between microorganisms and wastewater. The agitating assembly comprises a rotating column (9), the rotating column (9) is fixedly connected with the output end of the motor (5) internally, the outer wall of the rotating column (9) is fixedly connected with stirring blades (13), the outer wall of the rotating column (9) is fixedly connected with a connecting strip (10), and one side of the outer wall of the connecting strip (10) is fixedly connected with a scraper (11).

2. A multi-stage self-circulation anaerobic digestion reactor according to claim 1, characterized in that: The input pipe (2) is fixedly connected with a filter screen (7) internally, and the filter screen (7) is used for preliminarily filtering industrial wastewater.

3. A multi-stage self-circulating anaerobic digestion reactor according to claim 2, characterized in that: The inside of the reaction cylinder (1) is fixedly connected with a flow guide pipe (16), and the flow guide pipe (16) is provided with a control valve (12) internally.

4. A multi-stage self-circulation anaerobic digestion reactor according to claim 3, characterized in that: The inside of the partition plate (8) is fixedly connected with a flow guide plate (17), and the flow guide plate (17) is located below the flow guide pipe (16).

5. The multi-stage self-circulation anaerobic digestion reactor according to claim 1, characterized in that: The inside of the reaction cylinder (1) is provided with an output hole (18), and the output hole (18) is used for discharging wastewater into a next reaction chamber.

6. A multi-stage self-circulating anaerobic digestion reactor according to claim 3, characterized in that: The control valve (12) is used for controlling the output of the flow guide pipe (16).

7. The multi-stage self-circulation anaerobic digestion reactor according to claim 1, characterized in that: The outer wall of the reaction cylinder (1) is provided with a water pump (4), and the output end of the outer wall of the water pump (4) is fixedly connected with a connecting pipe (3).

8. A multi-stage self-circulating anaerobic digestion reactor according to claim 7, characterized in that: The connecting pipe (3) is fixedly connected with the inside of the reaction cylinder (1).

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