Photocatalytic hydrogen autotrophic denitrification reactor

Abstract

The utility model discloses a kind of photocatalytic hydrogen autotrophic denitrification reactor, photocatalytic device includes light source and inner bag, inner bag is installed in reaction chamber along vertical direction and is arranged with the inner peripheral wall of reaction chamber interval, inner bag inside is the light passage arranged along vertical direction, light source is arranged at the top of inner bag and is arranged towards light passage;Wherein, inner bag is light-transmitting article, the bottom wall of inner bag is provided with first light reflection structure, reaction chamber is the inner peripheral wall provided with second light reflection structure.Light emitted by light source can be irradiated to first light reflection structure through light passage, after being reflected by first light reflection structure, irradiate to water body in reaction chamber through inner bag, the light that penetrates water body can be irradiated to second reaction structure on the inner peripheral wall of reaction chamber again, after being reflected or refracted by second reaction structure, irradiate back to water body in reaction chamber again, thereby can greatly improve light utilization, and then photocatalytic efficiency can be improved, improve the effect and efficiency of denitrification ammonia nitrogen removal.

Description

Technical Field

[0001] This utility model relates to the field of aquaculture technology, and in particular to a photocatalytic hydrogen autotrophic denitrification reactor. Background Technology

[0002] Traditional aquaculture typically uses chemical agents to treat ammonia nitrogen in the water. This method easily leads to chemical residues in the water, causing secondary pollution. These residues can also remain in the animals' bodies, affecting their development and harming their health. Therefore, hydrogen autotrophic denitrification technology is used to treat ammonia nitrogen in the water. This technology uses hydrogen as an electron donor and utilizes hydrogen autotrophic denitrifying bacteria to reduce nitrate nitrogen into harmless nitrogen gas. Compared to traditional chemical methods, hydrogen autotrophic denitrification technology has significant advantages such as not producing secondary pollution and producing clean, non-toxic reaction products.

[0003] To improve the nitrogen removal efficiency of hydrogen autotrophic denitrification, photocatalysis is often used to accelerate the denitrification reaction rate. However, existing photocatalytic hydrogen autotrophic denitrification reactors often suffer from low light energy utilization during operation. For example, improper light source arrangement, uneven illumination inside the reactor, or the generated light being directly lost without being effectively utilized result in poor photocatalytic performance, making it difficult to meet the requirements of high-efficiency denitrification. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a photocatalytic hydrogen autotrophic denitrification reactor, which can improve light utilization and thus improve photocatalytic efficiency.

[0005] A photocatalytic hydrogen autotrophic denitrification reactor according to a first aspect of the present invention includes: a shell having a reaction chamber; the side wall of the shell having an inlet channel and an outlet channel communicating with the reaction chamber; the outlet channel being located at the upper end of the reaction chamber; the side wall of the shell also having an inlet port and an outlet port communicating with the reaction chamber; the inlet port being used to connect to an external hydrogen source; and a photocatalytic device including a light source and an inner liner; the inner liner being installed vertically within the reaction chamber and spaced apart from the inner peripheral wall of the reaction chamber; the interior of the inner liner being a vertically arranged light channel; the light source being disposed at the top of the inner liner and facing the light channel; wherein the inner liner is a light-transmitting component; the bottom wall of the inner liner having a first reflective structure; and the reaction chamber having a second reflective structure on its inner peripheral wall.

[0006] The photocatalytic hydrogen autotrophic denitrification reactor according to the embodiments of this utility model has at least the following beneficial effects: The photocatalytic hydrogen autotrophic denitrification reactor of this embodiment introduces hydrogen gas through the air inlet and water through the water inlet, which mixes with the hydrogen gas. The light emitted by the light source can shine through the light channel onto the first reflective structure at the bottom. After being reflected by the first reflective structure, the light shines into the water in the reaction chamber through the inner tank. The light penetrating the water can shine again onto the second reaction structure on the periphery of the reaction chamber. After being reflected or refracted by the second reaction structure, the light shines back into the water in the reaction chamber. The second reflective structure can then repeatedly reflect or refract the light, allowing the light to repeatedly pass through the water in the reaction chamber. This greatly improves the light utilization rate, thereby improving the photocatalytic efficiency and the effect and efficiency of denitrification and ammonia nitrogen removal.

[0007] According to some embodiments of the present invention, the housing also has a heat dissipation chamber located above the reaction chamber, the inner liner extends upward and close to the heat dissipation chamber, the light source is installed in the heat dissipation chamber, and the top wall of the housing has a heat dissipation vent communicating with the heat dissipation chamber.

[0008] According to some embodiments of the present invention, the photocatalytic device further includes a lampshade, which covers the outer periphery of the light source from top to bottom, and the lower end of the lampshade is adjacent to or abuts the upper end of the inner liner, and the light source extends downward into the light channel.

[0009] According to some embodiments of the present invention, a cleaning device is movably sleeved on the outer periphery of the inner liner, the cleaning device abutting against the outer peripheral wall of the inner liner and capable of reciprocating relative to the inner liner in the vertical direction.

[0010] According to some embodiments of the present invention, a hydrogenation device is also installed inside the housing. The hydrogenation device is located at the bottom of the reaction chamber and is connected to the reaction chamber. The hydrogenation device is connected to the air inlet and can release hydrogen gas input from the air inlet into the reaction chamber.

[0011] According to some embodiments of the present invention, a nanobubble generator is also included, which is located on the outside of the housing and connected to the air inlet.

[0012] According to some embodiments of the present invention, the water inlet channel includes a first water inlet pipe and a second water inlet pipe that are interconnected. The first water inlet pipe is horizontally inserted through the side wall of the shell and located at the upper end of the reaction chamber. The second water inlet pipe is connected to the first water inlet pipe and extends vertically downward into the reaction chamber. The lower end of the second water inlet pipe is close to the bottom wall of the reaction chamber.

[0013] According to some embodiments of the present invention, the second water inlet pipe is disposed on one side of the inner liner, and a plurality of water pushing holes are provided on the peripheral wall of the second water inlet pipe. All the water pushing holes are arranged sequentially at intervals in the vertical direction and can drive the water flow to rotate and flow around the circumference of the reaction chamber.

[0014] According to some embodiments of the present invention, the top of the reaction chamber is further provided with an overflow weir, the overflow weir having an annular groove surrounding the outer periphery of the inner liner, the inner peripheral wall of the annular groove being spaced apart from the inner liner, the outer peripheral wall of the annular groove being connected to the inner peripheral wall of the reaction chamber, and the water outlet channel penetrating the peripheral wall of the shell and the outer peripheral wall of the annular groove, and communicating with the annular groove.

[0015] According to some embodiments of the present invention, a heat-insulating chamber is provided inside the shell and located on the outer periphery of the reaction chamber. The heat-insulating chamber is filled with heat-insulating cotton. The shell can also be detachably provided with a heat-insulating cover located on the outer periphery of the heat-insulating chamber.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of a photocatalytic hydrogen autotrophic denitrification reactor according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the photocatalytic hydrogen autotrophic denitrification reactor according to an embodiment of the present invention.

[0018] Figure label: Shell 100, reaction chamber 110, water inlet channel 120, first water inlet pipe 121, second water inlet pipe 122, water push hole 123, water outlet channel 130, air inlet 140, exhaust port 141, heat dissipation chamber 150, heat dissipation port 151, hydrogenation device 160, nano bubble generator 170, overflow weir 180, annular groove 181, heat preservation chamber 190, heat insulation cover 191; Light source 200, inner liner 210, light channel 211, first reflective structure 220, second reflective structure 230, lampshade 240, cleaning device 250. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Reference Figure 1 and Figure 2This invention provides a photocatalytic hydrogen autotrophic denitrification reactor, comprising a shell 100 and a photocatalytic device. The shell 100 has a reaction chamber 110. The side wall of the shell 100 is provided with a water inlet channel 120 and a water outlet channel 130 communicating with the reaction chamber 110. The water outlet channel 130 is located at the upper end of the reaction chamber 110. The side wall of the shell 100 also has an air inlet 140 and an air outlet 141 communicating with the reaction chamber 110. The air inlet 140 is used to connect to an external hydrogen source. The catalytic device includes a light source 200 and an inner liner 210. The inner liner 210 is installed vertically inside the reaction chamber 110 and is spaced apart from the inner peripheral wall of the reaction chamber 110. The interior of the inner liner 210 has a vertically arranged light channel 211. The light source 200 is located at the top of the inner liner 210 and is arranged facing the light channel 211. The inner liner 210 is a light-transmitting component. The bottom wall of the inner liner 210 is provided with a first reflective structure 220, and the inner peripheral wall of the reaction chamber 110 is provided with a second reflective structure 230.

[0025] By employing the photocatalytic hydrogen autotrophic denitrification reactor of this embodiment, hydrogen gas is introduced through the air inlet 140 and water is introduced through the water inlet to mix with the hydrogen gas. The light emitted by the light source 200 can shine through the light channel 211 onto the first reflective structure 220 at the bottom. After being reflected by the first reflective structure 220, the light shines through the inner liner 210 onto the water in the reaction chamber 110. The light penetrating the water can shine again onto the second reaction structure on the inner peripheral wall of the reaction chamber 110. After being reflected or refracted by the second reaction structure, the light shines back into the water in the reaction chamber 110. Then, the second reflective structure 230 can repeatedly reflect or refract the light, so that the light repeatedly passes through the water in the reaction chamber 110, thereby greatly improving the light utilization rate, thereby improving the photocatalytic efficiency and the effect and efficiency of denitrification and ammonia nitrogen removal.

[0026] It is understood that the first reflective structure 220 can be a reflector or reflective film disposed on the bottom wall of the inner liner 210. Similarly, the second reflective structure 230 can be a reflector or reflective film disposed on the inner peripheral wall of the reaction chamber 110. This utility model does not specifically limit the specific reflective structure 220.

[0027] It is understood that the inner liner 210 is a light-transmitting component. Specifically, the inner liner 210 can be an acrylic component or a transparent PVC component, and this utility model does not make any specific limitation in this regard.

[0028] It is understood that the perimeter wall of the reaction chamber 110 can be made of acrylic or transparent PVC, and this utility model does not specifically limit this.

[0029] Reference Figure 1 and Figure 2In some embodiments, the housing 100 also has a heat dissipation chamber 150 located above the reaction chamber 110. The inner liner 210 extends upward and close to the heat dissipation chamber 150. The light source 200 is installed in the heat dissipation chamber 150. The top wall of the housing 100 has a heat dissipation vent 151 that communicates with the heat dissipation chamber 150, which can effectively dissipate heat from the light source 200, which helps to ensure the normal operation of the light source 200 and extend the service life of the light source 200.

[0030] Reference Figure 1 and Figure 2 In some embodiments, the photocatalytic device further includes a lampshade 240, which covers the outer periphery of the light source 200 from top to bottom, with the lower end of the lampshade 240 adjacent to or abutting the upper end of the inner liner 210. The light source 200 extends downward into the light channel 211. This allows the light emitted by the light source 200 to illuminate the light channel 211 as much as possible and be reflected into the water by the first reflective structure 220, thereby further improving the light utilization rate.

[0031] Reference Figure 1 and Figure 2 In some embodiments, a cleaning device 250 is movably fitted around the outer periphery of the inner liner 210. The cleaning device 250 abuts against the outer peripheral wall of the inner liner 210 and can reciprocate relative to the inner liner 210 in the vertical direction. During the movement, the cleaning device 250 can wipe and clean the dirt on the surface of the outer peripheral wall of the inner liner 210, thereby preventing the outer peripheral wall of the inner liner 210 from being affected by dirt and thus avoiding the impact on the transparency of the inner liner 210, which would affect the transmission and refraction of light. This allows light to pass through the inner liner 210 and irradiate the water, further improving the light utilization rate.

[0032] Understandably, referring to Figure 1 and Figure 2 In some embodiments, there are multiple cleaning devices 250 arranged sequentially in the vertical direction, thereby improving the cleaning efficiency of the inner liner 210.

[0033] Understandably, referring to Figure 1 and Figure 2 In some embodiments, the inner liner 210 has at least one guide rod arranged in a vertical direction on its outer periphery, and the cleaning device 250 is mounted on each guide rod and can move vertically along the guide rod. The guide rod can be a screw, and the cleaning device 250 is threaded onto each screw.

[0034] Reference Figure 1 and Figure 2In some embodiments, a hydrogenation device 160 is also installed inside the housing 100. The hydrogenation device 160 is located at the bottom of the reaction chamber 110 and is connected to the reaction chamber 110. The hydrogenation device 160 is connected to the air inlet 140 and can release the hydrogen gas input from the air inlet 140 into the reaction chamber 110. This facilitates the full mixing of water and hydrogen gas, which is beneficial to improving the ammonia nitrogen removal effect on the water.

[0035] Reference Figure 1 and Figure 2 In some embodiments, the photocatalytic hydrogen autotrophic denitrification reactor further includes a nanobubble generator 170, which is located on the outside of the shell 100 and connected to the air inlet 140, thereby... Reference Figure 1 and Figure 2 In some embodiments, after the nanobubble generator 170 passes through the air inlet 140 to the hydrogenation device 160, it can fully mix hydrogen with water to form foam, thereby greatly improving the denitrification reaction rate and the ammonia nitrogen removal effect of the water.

[0036] Reference Figure 1 and Figure 2 In some embodiments, the water inlet channel 120 includes a first water inlet pipe 121 and a second water inlet pipe 122 that are interconnected. The first water inlet pipe 121 is horizontally inserted through the side wall of the housing 100 and located at the upper end of the reaction chamber 110. The second water inlet pipe 122 is connected to the first water inlet pipe 121 and extends vertically downward into the reaction chamber 110. The lower end of the second water inlet pipe 122 is close to the bottom wall of the reaction chamber 110. This allows water to be introduced to the bottom of the reaction chamber 110. The water gradually rises in the reaction chamber 110 to the water outlet channel 130 and is then discharged from the water outlet channel 130. This structure can prolong the residence time of the water in the reaction chamber 110, allowing the water to fully contact hydrogen during the rising process, and light can also repeatedly pass through the water, thereby greatly improving the denitrification efficiency of the water.

[0037] Reference Figure 1 and Figure 2 In some embodiments, the second water inlet pipe 122 is disposed on one side of the inner liner 210. The peripheral wall of the second water inlet pipe 122 is provided with a plurality of water pushing holes 123. All the water pushing holes 123 are arranged in sequence at intervals in the vertical direction and can drive the water flow to rotate and flow around the circumference of the reaction chamber 110. This can extend the flow path of the water in the reaction chamber 110 and allow the water to fully contact with hydrogen. Light can also repeatedly pass through the water, which greatly improves the denitrification effect of the water.

[0038] Reference Figure 1 and Figure 2In some embodiments, an overflow weir 180 is also provided on the top of the reaction chamber 110. The overflow weir 180 has an annular groove 181 surrounding the outer periphery of the inner liner 210. The inner peripheral wall of the annular groove 181 is spaced apart from the inner liner 210, and the outer peripheral wall of the annular groove 181 is connected to the inner peripheral wall of the reaction chamber 110. The water outlet channel 130 passes through the peripheral wall of the shell 100 and the outer peripheral wall of the annular groove 181 and is connected to the annular groove 181. Thus, when the water gradually rises in the reaction chamber 110, it can flow into the annular groove 181 of the overflow weir 180 through the gap between the overflow weir 180 and the inner liner 210, and then be discharged from the water outlet channel 130.

[0039] Reference Figure 1 and Figure 2 In some embodiments, the shell 100 is provided with a heat insulation chamber 190 located on the outer periphery of the reaction chamber 110. The heat insulation chamber 190 is filled with heat insulation cotton. The shell 100 can also be detachably provided with a heat insulation cover 191 located on the outer periphery of the heat insulation chamber 190, thereby keeping the reaction chamber 110 warm and facilitating the efficient denitrification reaction in the reaction chamber 110.

[0040] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof can be combined with each other unless otherwise specified.

Claims

1. A photocatalytic hydrogen autotrophic denitrification reactor, characterized in that, include: The shell (100) has a reaction chamber (110). The side wall of the shell (100) is provided with a water inlet channel (120) and a water outlet channel (130) connected to the reaction chamber (110). The water outlet channel (130) is located at the upper end of the reaction chamber (110). The side wall of the shell (100) is also provided with an air inlet (140) and an exhaust port (141) connected to the reaction chamber (110). The air inlet (140) is used to connect to an external hydrogen source. A photocatalytic device includes a light source (200) and an inner liner (210). The inner liner (210) is installed vertically inside a reaction chamber (110) and is spaced apart from the inner peripheral wall of the reaction chamber (110). The interior of the inner liner (210) is a light channel (211) arranged vertically. The light source (200) is located at the top of the inner liner (210) and is arranged facing the light channel (211). The inner liner (210) is a light-transmitting component, and the bottom wall of the inner liner (210) is provided with a first reflective structure (220), while the inner peripheral wall of the reaction chamber (110) is provided with a second reflective structure (230).

2. The photocatalytic hydrogen autotrophic denitrification reactor according to claim 1, characterized in that, The housing (100) also has a heat dissipation chamber (150) located above the reaction chamber (110). The inner liner (210) extends upward and close to the heat dissipation chamber (150). The light source (200) is installed in the heat dissipation chamber (150). The top wall of the housing (100) has a heat dissipation vent (151) that communicates with the heat dissipation chamber (150).

3. The photocatalytic hydrogen autotrophic denitrification reactor according to claim 2, characterized in that, The photocatalytic device also includes a lampshade (240), which covers the outer periphery of the light source (200) from top to bottom, and the lower end of the lampshade (240) is close to or abuts the upper end of the inner liner (210), and the light source (200) extends downward into the light channel (211).

4. The photocatalytic hydrogen autotrophic denitrification reactor according to claim 1, characterized in that, A cleaning device (250) is movably fitted around the outer periphery of the inner liner (210). The cleaning device (250) abuts against the outer peripheral wall of the inner liner (210) and can reciprocate relative to the inner liner (210) in the vertical direction.

5. The photocatalytic hydrogen autotrophic denitrification reactor according to claim 1, characterized in that, The housing (100) is also equipped with a hydrogenation device (160), which is located at the bottom of the reaction chamber (110) and connected to the reaction chamber (110). The hydrogenation device (160) is connected to the air inlet (140) and can release the hydrogen gas input from the air inlet (140) into the reaction chamber (110).

6. The photocatalytic hydrogen autotrophic denitrification reactor according to claim 5, characterized in that, It also includes a nanobubble generator (170), which is located outside the housing (100) and communicates with the air inlet (140).

7. The photocatalytic hydrogen autotrophic denitrification reactor according to claim 1, characterized in that, The water inlet channel (120) includes a first water inlet pipe (121) and a second water inlet pipe (122) that are interconnected. The first water inlet pipe (121) is horizontally inserted through the side wall of the housing (100) and located at the upper end of the reaction chamber (110). The second water inlet pipe (122) is connected to the first water inlet pipe (121) and extends vertically downward into the reaction chamber (110). The lower end of the second water inlet pipe (122) is close to the bottom wall of the reaction chamber (110).

8. The photocatalytic hydrogen autotrophic denitrification reactor according to claim 7, characterized in that, The second water inlet pipe (122) is located on one side of the inner liner (210). The peripheral wall of the second water inlet pipe (122) is provided with a plurality of water pushing holes (123). All the water pushing holes (123) are arranged in sequence at intervals in the vertical direction and can drive the water flow to rotate and flow around the circumference of the reaction chamber (110).

9. The photocatalytic hydrogen autotrophic denitrification reactor according to claim 1, characterized in that, The top of the reaction chamber (110) is also provided with an overflow weir (180), the overflow weir (180) has an annular groove (181) surrounding the outer periphery of the inner liner (210), the inner peripheral wall of the annular groove (181) is spaced apart from the inner liner (210), the outer peripheral wall of the annular groove (181) is connected to the inner peripheral wall of the reaction chamber (110), the water outlet channel (130) penetrates the peripheral wall of the shell (100) and the outer peripheral wall of the annular groove (181), and is connected to the annular groove (181).

10. The photocatalytic hydrogen autotrophic denitrification reactor according to claim 1, characterized in that, The shell (100) is provided with a heat insulation chamber (190) located on the outer periphery of the reaction chamber (110). The heat insulation chamber (190) is filled with heat insulation cotton. The shell (100) can also be detachably provided with a heat insulation cover (191) located on the outer periphery of the heat insulation chamber (190).

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