Efficient reaction device for nitrogen removal of gaseous carbon source

Abstract

The utility model discloses an efficient reaction device for nitrogen removal of a gaseous carbon source. The efficient reaction device comprises a reaction kettle, a base, a stirring mechanism, a temperature control assembly and monitoring equipment, two first hinge seats are respectively mounted on two sides of the outer wall of the reaction kettle; the top of the reaction kettle is provided with a detection port and a sample inlet, and the bottom is provided with a discharge port; a stratified sampling assembly is mounted on the side wall of the reaction kettle; four second hinge seats are mounted on the top surface of the base, and electric push rods are hinged between the first hinge seats and the second hinge seats; the stirring mechanism comprises an electric shaft assembly, a first stirring assembly and a second stirring assembly; and the electric shaft assembly is rotationally connected into the reaction kettle. According to the utility model, the angle of the reaction kettle can be flexibly adjusted, the stirring range is expanded, the stirring efficiency is improved, and the gas-liquid-sludge three-phase mass transfer efficiency is accelerated, so that the activated sludge reaction rate is improved, the sewage denitrification efficiency is accelerated, the treatment period is shortened, and efficient denitrification of a gaseous carbon source is realized.

Description

Technical Field

[0001] This utility model relates to the field of wastewater biological treatment technology, and in particular to a high-efficiency reaction device for denitrification of gaseous carbon sources. Background Technology

[0002] Traditional wastewater treatment processes often face numerous limitations when treating nitrogen-containing wastewater. Nitrification, which occurs under aerobic conditions, relies heavily on aeration equipment to provide oxygen, accounting for over 50% of energy consumption. Denitrification requires an external carbon source (such as methanol or sodium acetate) as an electron donor, significantly increasing energy consumption and carbon source costs. Based on the future development requirements of wastewater treatment, methane produced during anaerobic digestion can be used as a carbon source for the subsequent denitrification stage to achieve energy cost savings.

[0003] Existing denitrification devices typically have fixed reaction vessels and rely solely on conventional stirrers for agitation. This results in limited stirring range, uneven mixing, and low solid-liquid mass transfer efficiency, leading to insufficient contact between activated sludge and substrate reactants, slow reaction rates, low wastewater treatment efficiency, and long treatment cycles. Furthermore, traditional stirring methods struggle to achieve thorough mixing of the gas, liquid, and solid phases, limiting the research and application of gaseous carbon source denitrification processes.

[0004] To this end, a highly efficient reaction device for denitrification of gaseous carbon sources is proposed, which uses methane produced during anaerobic digestion or added methane gas as a carbon source for denitrification to achieve highly efficient autotrophic denitrification. Utility Model Content

[0005] The purpose of this invention is to provide a highly efficient reaction device for denitrification of gaseous carbon sources, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a high-efficiency reaction device for denitrification of gaseous carbon sources, comprising:

[0007] The reactor has two first hinge seats installed on both sides of its outer wall; the top of the reactor has a detection port and a sample inlet, and the bottom has a discharge port; the side wall of the reactor is equipped with a layered sampling assembly.

[0008] The base has four second hinge seats mounted on its top surface, and an electric actuator is hinged between the first hinge seat and the second hinge seat.

[0009] A stirring mechanism, comprising an electric shaft assembly, a first stirring component, and a second stirring component; the electric shaft assembly is rotatably connected inside the reactor, the first stirring component and the second stirring component are both mounted on the electric shaft assembly, the first stirring component has several turbulent flow holes, and the second stirring component is inclined.

[0010] A temperature control assembly, which is installed on the reactor;

[0011] The monitoring device has its detection end extending into the reaction vessel through the detection port.

[0012] According to the present invention, a high-efficiency reaction device for denitrification of gaseous carbon sources is provided. The electric shaft assembly includes a drive motor and a stirring shaft. The drive motor is installed on the top of the reaction vessel. The output shaft of the drive motor is shaft-connected to the stirring shaft through a coupling. The stirring shaft is rotatably connected in the inner cavity of the reaction vessel.

[0013] According to the present invention, a high-efficiency reaction device for denitrification of gaseous carbon sources is provided, wherein the first stirring assembly includes a plurality of first blade groups, and the plurality of first blade groups are arranged at intervals from top to bottom along the outer wall of the stirring shaft.

[0014] Each first blade group includes several rectangular blades circumferentially mounted on the outer wall of the stirring shaft, and several turbulent flow holes are provided on the rectangular blades.

[0015] According to the present invention, a high-efficiency reaction device for denitrification of gaseous carbon sources is provided, wherein the second stirring assembly includes a plurality of second blade groups, which are arranged at intervals from top to bottom along the outer wall of the stirring shaft; the plurality of second blade groups and the plurality of first blade groups are arranged alternately.

[0016] Each group of the second blades includes several stirring blades circumferentially mounted on the outer wall of the stirring shaft, and the stirring blades are inclined.

[0017] According to the present invention, a high-efficiency reaction device for denitrification of gaseous carbon sources is provided. The temperature control component includes a heat-insulating jacket installed on the side wall of the reaction vessel, a heating element installed inside the heat-insulating jacket, and a temperature controller installed on the base. The temperature controller is electrically connected to the heating element.

[0018] According to the present invention, a high-efficiency reaction device for denitrification of gaseous carbon sources is provided, wherein the layered sampling component includes a first sampling port, a second sampling port and a third sampling port arranged sequentially from top to bottom, and the first sampling port, the second sampling port and the third sampling port are installed at intervals on the side wall of the reaction vessel.

[0019] According to the present invention, a high-efficiency reaction device for denitrification of gaseous carbon sources is provided, wherein a number of legs are installed at the bottom of the base, and anti-slip pads are installed at the bottom of the legs.

[0020] The present invention discloses the following technical effects:

[0021] This invention achieves flexible adjustment of the reactor angle through an electric actuator. Under the action of the stirring mechanism, the material in the reactor is evenly distributed, ensuring uniform material contact. The electric shaft assembly drives the first and second stirring components to rotate, creating complex and effective fluid motion within the reactor. The turbulent flow holes generate more turbulence and eddies during stirring, enhancing the mixing effect between activated sludge and culture medium (wastewater), ensuring uniform sludge-water mixing. The inclined second stirring component further expands the stirring range, eliminates dead zones, and greatly improves stirring efficiency. Uniform sludge-water mixing helps functional microorganisms to fully contact the substrate, accelerating the reaction rate, thereby significantly improving the efficiency of wastewater treatment, shortening the treatment cycle, and enhancing the denitrification effect of gaseous carbon sources.

[0022] This invention, by installing a layered sampling component on the side wall of the reactor, can extract activated sludge samples at different depths inside the reactor. Through monitoring equipment, key parameters inside the reactor can be monitored, making it easier for operators to understand the environmental conditions inside the reactor and perform corresponding operations, ensuring that the reaction always takes place under optimal conditions, thereby guaranteeing the quality and stability of wastewater treatment.

[0023] This invention uses a temperature control component to regulate and stabilize the temperature inside the reactor within the optimal range, providing a stable and suitable growth environment for microorganisms, effectively ensuring their activity and metabolic function, and thus improving the denitrification effect and stability of gaseous carbon sources. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the reaction vessel in this utility model;

[0027] Figure 3 This is a schematic diagram of the stirring mechanism in this utility model.

[0028] The components are as follows: 1. Reactor; 2. First hinge seat; 3. Detection port; 4. Sample inlet; 5. Discharge port; 6. Base; 7. Second hinge seat; 8. Electric actuator; 9. Drive motor; 10. Stirring shaft; 11. Rectangular blade; 12. Turbulent flow hole; 13. Stirring blade; 14. Insulation jacket; 15. First sampling port; 16. Second sampling port; 17. Third sampling port; 18. Support leg. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figures 1-3 This utility model provides a high-efficiency reaction device for denitrification of gaseous carbon sources, comprising:

[0032] The reactor 1 has two first hinge seats 2 installed on both sides of its outer wall; the top of the reactor 1 is provided with a detection port 3 and a sample inlet 4, and the bottom is provided with a discharge port 5; the side wall of the reactor 1 is equipped with a layered sampling component; the sample inlet 4 is used for sample introduction and methane gas introduction; the reactor 1 is connected to a titanium alloy microporous aerator with a pore size of 80μm and a pore spacing of 2mm, forming a microbubble group with a diameter of 1-2mm. The aeration equipment increases the contact area between the methane gas and the sludge mixture in the reactor 1, thereby increasing the methane mass transfer rate;

[0033] The base 6 has four second hinge seats 7 mounted on its top surface, and an electric actuator 8 is hinged between the first hinge seat 2 and the second hinge seat 7.

[0034] The stirring mechanism includes an electric shaft assembly, a first stirring component, and a second stirring component. The electric shaft assembly is rotatably connected inside the reactor 1. Both the first stirring component and the second stirring component are mounted on the electric shaft assembly. The first stirring component has several turbulent flow holes 12. The second stirring component is inclined.

[0035] Temperature control assembly, which is installed on reactor 1;

[0036] The monitoring equipment has its probe end inserted into the reactor 1 through the detection port 3. The monitoring equipment includes a pH sensor, a temperature sensor, a dissolved oxygen sensor, etc., and is used to detect the pH value, temperature, and dissolved oxygen data inside the reactor.

[0037] In this embodiment, the reactor 1 uses a precision-machined flange connection and a high-quality sealing ring to ensure that there is no gas leakage during the operation of the device; the detection port 3, the sample inlet 4, and the outlet 5 are all equipped with special sealing joints to effectively prevent external air from seeping in and internal gas from escaping, thereby achieving good sealing performance and oxygen-free performance, providing stable anaerobic conditions for anaerobic microorganisms. Before the reaction starts, the reactor 1 is replaced with an inert gas (nitrogen or argon) to remove residual oxygen, and then an appropriate amount of methane is introduced. Good sealing performance can also prevent leakage of gaseous carbon source and improve gas mass transfer effect.

[0038] This invention uses an electric shaft assembly to drive the first and second stirring components to rotate, creating complex and effective fluid motion within the reactor. The turbulent flow holes 12 generate more turbulence and eddies during stirring, effectively accelerating mass transfer between microorganisms, wastewater, and gaseous materials under anaerobic conditions, ensuring uniform mixing of the three phases. The inclined second stirring component further expands the stirring range, eliminates dead zones, greatly improves stirring efficiency, and accelerates the reaction rate, thereby significantly improving the efficiency of wastewater treatment, shortening the treatment cycle, and enhancing the denitrification effect of gaseous carbon sources. The efficient gas mass transfer and uniform mud-water mixing conditions provide sufficient substrate and a suitable growth environment for microorganisms. The enriched functional microorganisms, methanogenic bacteria (Methylomonas and Methylocystis), can efficiently oxidize methane, producing metabolites (such as methanol and acetic acid). These metabolites are further utilized by denitrifying bacteria (such as methyl-trophic denitrifying bacteria and ordinary denitrifying bacteria) to carry out heterotrophic denitrification reactions, reducing nitrate nitrogen to nitrogen gas, thus achieving efficient denitrification.

[0039] This invention achieves flexible adjustment of the angle of the reactor 1 by extending and retracting the electric push rod 8. Under the action of the stirring mechanism, the material in the reactor 1 is evenly distributed, so that the material is in uniform contact.

[0040] This invention, by installing a layered sampling component on the side wall of reactor 1, can extract activated sludge samples at different depths inside the reactor. Through monitoring equipment, key parameters inside reactor 1 can be monitored, making it easier for operators to understand the environmental conditions inside the reactor and perform corresponding operations, ensuring that the reaction always takes place under optimal conditions, thereby guaranteeing the quality and stability of wastewater treatment.

[0041] This invention uses a temperature control component to regulate and stabilize the temperature inside the reactor 1 within the optimal range, providing a stable and suitable growth environment for microorganisms, effectively ensuring their activity and metabolic function, and thus improving the denitrification effect and stability of gaseous carbon sources.

[0042] This invention utilizes a titanium alloy microporous aerator and a stirring system to uniformly disperse methane in the sludge as tiny bubbles, improving gas utilization efficiency. Simultaneously, the device maintains the methane concentration in the sludge, ensuring sufficient gas for microbial reaction. Multiple sealing measures ensure an anaerobic environment within the reactor, preventing methane leakage and oxygen ingress, providing a stable living environment for anaerobic microorganisms. Specific microorganisms are cultivated within the device, enabling them to efficiently utilize methane for denitrification, converting nitrate nitrogen into harmless nitrogen gas. Furthermore, the device design facilitates the transfer and utilization of microbial metabolites, enhancing reaction efficiency. Equipped with an intelligent control system, this invention monitors and adjusts reaction conditions in real time, ensuring stable reaction progress. Through optimized gas mass transfer, maintenance of an anaerobic environment, promotion of microbial synergy, and intelligent control and safety features, it achieves efficient and stable treatment of gaseous carbon source denitrification.

[0043] Further optimization of the scheme: the electric shaft assembly includes a drive motor 9 and a stirring shaft 10. The drive motor 9 is installed on the top of the reactor 1, and the output shaft of the drive motor 9 is connected to the stirring shaft 10 through a coupling. The stirring shaft 10 is rotatably connected in the inner cavity of the reactor 1.

[0044] The scheme is further optimized so that the first stirring component includes several first blade groups, which are arranged at intervals from top to bottom along the outer wall of the stirring shaft 10.

[0045] Each first blade group includes several rectangular blades 11 circumferentially mounted on the outer wall of the stirring shaft 10, and several turbulent flow holes 12 are provided on the rectangular blades 11.

[0046] The scheme is further optimized so that the second stirring component includes several second blade groups, which are arranged at intervals from top to bottom along the outer wall of the stirring shaft 10; the several second blade groups are arranged alternately with several first blade groups.

[0047] Each second blade group includes several stirring blades 13 circumferentially mounted on the outer wall of the stirring shaft 10, and the stirring blades 13 are inclined.

[0048] When the device is started, the external power supply supplies power to the drive motor 9, and the output shaft of the drive motor 9 starts to rotate, thereby rotating the first stirring component and the second stirring component, realizing effective stirring of the material in the reactor 1, and creating good mixing conditions for the denitrification reaction of gaseous carbon source.

[0049] During rotation, the rectangular blades 11 push the surrounding materials, generating a certain fluid shear force and initiating initial mixing. As the materials pass through the turbulent flow holes 12 on the rectangular blades 11, the change in hole diameter alters the local flow velocity and pressure, generating turbulence and eddies. These turbulence and eddies further break up the laminar flow state of the materials, enhancing mutual diffusion and mixing. The inclined stirring blades 13 generate fluid motion in different directions during rotation, expanding the stirring range and effectively eliminating dead zones. Simultaneously, the alternating arrangement of the second and first blade groups creates more complex and varied fluid motion during stirring. Combined with the electric actuator 8 adjusting the position of the reactor, this further enhances the mixing effect. As a result, it ensures that all materials in the reactor 1 are fully stirred, effectively accelerating the mass transfer of the three-phase materials of microorganisms, sewage and gas under anaerobic conditions, ensuring uniform mixing of the three-phase materials, eliminating dead zones in stirring, greatly improving stirring efficiency and gas utilization, accelerating the reaction rate, and providing sufficient substrate and a suitable growth environment for microorganisms; methanogenic bacteria (such as Methylomonas and Methylocystis) can efficiently oxidize methane and produce metabolites (such as methanol and acetic acid), which are further utilized by denitrifying bacteria (such as methyl-trophic denitrifying bacteria and ordinary denitrifying bacteria) to carry out heterotrophic denitrification reactions, reducing nitrate nitrogen to nitrogen gas, thereby achieving efficient denitrification.

[0050] The solution is further optimized. The temperature control component includes an insulation jacket 14 installed on the side wall of the reactor 1. A heating element is installed inside the insulation jacket 14. A temperature controller is installed on the base 6. The temperature controller is electrically connected to the heating element.

[0051] The temperature controller activates the heating element, which generates heat. This heat is transferred to the material inside the reactor 1 through the insulation jacket 14, gradually increasing the material's temperature. The insulation jacket 14 effectively reduces heat loss, ensuring that the temperature inside the reactor 1 remains stable within the optimal range. This provides a stable and suitable growth environment for methanogenic and denitrifying bacteria, protecting their activity and metabolic functions, thereby improving the efficiency and stability of denitrification from gaseous carbon sources.

[0052] The scheme is further optimized. The stratified sampling component includes a first sampling port 15, a second sampling port 16, and a third sampling port 17 arranged sequentially from top to bottom. The first sampling port 15, the second sampling port 16, and the third sampling port 17 are installed alternately on the side wall of the reactor 1. The material in the upper part of the reactor 1 is sampled through the first sampling port 15. The middle and lower parts are sampled through the second sampling port 16 or the third sampling port 17.

[0053] The design is further optimized by installing several support legs 18 at the bottom of the base 6, with anti-slip pads installed at the bottom of the support legs 18. The support legs 18 prevent the reactor 1 from directly contacting the ground, reducing the impact of ground moisture and dust on the reactor 1. When the reaction device is placed on the ground, the anti-slip pads are in close contact with the ground, increasing the friction between the support legs 18 and the ground, effectively preventing the reaction device from sliding or shifting due to vibrations caused by stirring, electric actuator adjustment, etc. during operation, thus ensuring the stability of the reaction device.

[0054] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A high-efficiency reaction device for denitrification of a gaseous carbon source, characterized by, include: The reactor (1) has two first hinge seats (2) installed on both sides of its outer wall; the top of the reactor (1) is provided with a detection port (3) and a sample inlet (4), and the bottom is provided with a discharge port (5); the side wall of the reactor (1) is equipped with a layered sampling assembly; The base (6) has four second hinge seats (7) mounted on its top surface, and an electric actuator (8) is hinged between the first hinge seat (2) and the second hinge seat (7). The stirring mechanism includes an electric shaft assembly, a first stirring component, and a second stirring component; the electric shaft assembly is rotatably connected inside the reactor (1), and both the first stirring component and the second stirring component are mounted on the electric shaft assembly. The first stirring component has several turbulent flow holes (12), and the second stirring component is inclined. Temperature control assembly, the temperature control assembly being installed on the reactor (1); The monitoring device has its detection end extending into the reaction vessel (1) through the detection port (3).

2. The high-efficiency reaction device for denitrification of gaseous carbon source according to claim 1, characterized in that: The electric shaft assembly includes a drive motor (9) and a stirring shaft (10). The drive motor (9) is mounted on the top of the reactor (1). The output shaft of the drive motor (9) is connected to the stirring shaft (10) via a coupling. The stirring shaft (10) is rotatably connected in the inner cavity of the reactor (1).

3. The high-efficiency reaction device for denitrification of gaseous carbon sources according to claim 2, characterized in that: The first stirring assembly includes a plurality of first blade groups, which are arranged at intervals from top to bottom along the outer wall of the stirring shaft (10); Each first blade group includes several rectangular blades (11) circumferentially mounted on the outer wall of the stirring shaft (10), and several turbulent flow holes (12) are provided on the rectangular blades (11).

4. The high-efficiency reaction device for denitrification of gaseous carbon sources according to claim 3, characterized in that: The second stirring assembly includes a plurality of second blade groups, which are arranged at intervals from top to bottom along the outer wall of the stirring shaft (10); the plurality of second blade groups and the plurality of first blade groups are arranged alternately. Each second blade group includes several stirring blades (13) circumferentially mounted on the outer wall of the stirring shaft (10), and the stirring blades (13) are inclined.

5. The high-efficiency reaction device for denitrification of gaseous carbon sources according to claim 1, characterized in that: The temperature control assembly includes a heat insulation jacket (14) installed on the side wall of the reactor (1), a heating element is installed inside the heat insulation jacket (14), and a temperature controller is installed on the base (6), which is electrically connected to the heating element.

6. The high-efficiency reaction device for denitrification of gaseous carbon sources according to claim 1, characterized in that: The stratified sampling assembly includes a first sampling port (15), a second sampling port (16), and a third sampling port (17) arranged sequentially from top to bottom. The first sampling port (15), the second sampling port (16), and the third sampling port (17) are installed at intervals on the side wall of the reactor (1).

7. The high-efficiency reaction device for denitrification of gaseous carbon sources according to claim 1, characterized in that: The base (6) has several legs (18) installed at its bottom, and the bottom of the legs (18) is equipped with anti-slip pads.

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