Aeration device based on microbial fuel cell

Abstract

The invention discloses an aeration device based on a microbial fuel cell, and the aeration device comprises an aeration unit which comprises an aeration assembly which is arranged in a water body and is used for aerating a eutrophic water body, and a floating assembly which is arranged at the upper part of the aeration assembly and is used for hovering the aeration assembly in the eutrophic water body; the power generation unit comprises a blast assembly arranged at the lower end of the aeration assembly and used for supplying gas to the aeration assembly, and a power generation assembly arranged at the lower part of the blast assembly and used for supplying electric energy to the blast assembly. Organic matters in the water body enter the power generation assembly along with the water body, the power generation assembly directly converts chemical energy in the organic matters into electric energy and continuously supplies the electric energy to the air blowing assembly, and the air blowing assembly continuously blows air into the aeration assembly, so that the aeration assembly continuously aerates in the water body; and when the aeration position needs to be switched, the aeration device can be directly moved, so that the flexible position switching of the aeration device is realized.

Description

Technical Field

[0001] The invention relates to the technical field of water environment protection, in particular to an aeration device based on a microbial fuel cell. Background Art

[0002] Eutrophication of water bodies is a common problem faced by inland lakes and reservoirs around the world. In addition to strictly controlling the concentration of influent pollutants, increasing the aeration volume of lake water bodies can promote the decomposition of organic matter in the water body, provide the required oxygen for the growth of fish and other animals and plants, and enhance the activity of underwater ecological restoration systems. It is one of the important methods to control eutrophication of water bodies. Microbial fuel cells are a device that uses microorganisms to directly convert the chemical energy in organic matter into electrical energy. Microbial fuel cells can use organic matter in eutrophic water bodies, decompose these organic matter under the action of anode microorganisms and release electrons and protons. The electrons are transferred to the cathode through an external circuit to form an electric current;

[0003] Aeration devices in the prior art are mostly powered by solar energy or power grid. During operation, due to the line limitation of solar photovoltaic panels or power grid, an aeration pipe network needs to be fixedly laid in the water body of the lake. As a result, the aeration position of the lake cannot be flexibly switched, and there are certain aeration limitations. In addition, the electric energy of solar energy or power grid is constant, and the aeration volume cannot be adaptively changed according to the concentration change of organic matter (eutrophication degree) at different positions in the water body, resulting in insufficient aeration in some areas with heavy eutrophication.

[0004] Therefore, an aeration device based on microbial fuel cells is proposed to enhance the oxygen content of water bodies, alleviate eutrophication of water bodies, and improve the water quality of lakes.

[0005] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are the closest prior art. Summary of the invention

[0006] The object of the present invention is to provide an aeration device based on a microbial fuel cell to solve the problem that the aeration position of the aeration device in the prior art mentioned in the above background technology cannot be flexibly switched and the aeration amount cannot be adaptively changed according to the concentration changes of organic matter at different positions in the water body, resulting in insufficient aeration in some areas with severe eutrophication.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An aeration device based on a microbial fuel cell, comprising:

[0009] The aeration unit includes an aeration component placed in the water body for aerating the eutrophic water body, and a floating component arranged on the upper part of the aeration component for suspending the aeration component in the eutrophic water body;

[0010] The power generation unit comprises a blast assembly arranged at the lower end of the aeration assembly for supplying gas to the aeration assembly, and a power generation assembly arranged at the lower part of the blast assembly for supplying electric energy to the blast assembly.

[0011] Furthermore, the aeration assembly comprises:

[0012] A bearing plate, arranged at the upper end of the power generation assembly, wherein a shunt groove is arranged inside the bearing plate;

[0013] Vertical tubes, a plurality of which are provided at the upper end of the bearing plate;

[0014] A transverse tube fixedly connected to one side of the vertical tube;

[0015] The aeration head is arranged at the lower part of the transverse pipe, and a plurality of exhaust holes are arranged at the lower end of the aeration head for aerating the water body.

[0016] Furthermore, the lower end of the horizontal pipe is fixedly connected with a sinking pipe, the aeration head is fixedly connected to the lower end of the lower end pipe, and the aeration head, the sinking pipe, the horizontal pipe and the pipes inside the vertical pipe are all connected;

[0017] The sinking pipe, the horizontal pipe and the vertical pipe are connected in sequence to form an N shape.

[0018] Furthermore, the floating assembly comprises:

[0019] Two groups of fixed blocks are respectively fixedly connected on both sides of the bearing plate;

[0020] A pull rope, fixedly connected to the upper end of the fixed block;

[0021] There are two groups of floating blocks, which are respectively fixedly connected to the upper ends of the pull ropes corresponding to the two groups of fixed blocks. The interior of the floating blocks is hollow and is used to float on the surface of the water.

[0022] Furthermore, the power generation component includes:

[0023] A box body is arranged at the lower end of the carrying plate, and an anode tank and a cathode tank are respectively arranged inside the box body;

[0024] A proton exchange membrane is arranged inside the box and between the anode tank and the cathode tank;

[0025] an anode plate, arranged inside the anode tank;

[0026] A cathode plate, arranged inside the cathode tank;

[0027] The conductive wire is connected between the anode tank and the cathode tank, and the upper part of the conductive wire passes through the inside of the box to the outside.

[0028] Furthermore, water inlet holes and water outlet holes are provided on both sides of the box body corresponding to the cathode tank and the anode tank from top to bottom, so as to continuously replace the water in the cathode tank and the anode tank;

[0029] A first fan is provided inside the water outlet hole for discharging water from the cathode tank and the anode tank.

[0030] Furthermore, the air blowing assembly comprises:

[0031] A blast sleeve, the bottom of which is fixedly connected to the upper end of the box body through a cushion block;

[0032] A driving motor is installed inside the blowing sleeve, and the driving motor is electrically connected to the conductive wire;

[0033] a second fan, connected to the driving end of the driving motor, for blowing air to the aeration assembly;

[0034] An air inlet pipe is connected to the side of the cushion block, an upper air inlet of the air inlet pipe is higher than the upper end of the floating component, and a hole is provided inside the cushion block for connecting the air outlet of the air inlet pipe with the air inlet of the blowing sleeve.

[0035] Furthermore, the box is located at the upper end of the cathode tank and is fixedly connected with an air supply pipe;

[0036] The air inlet at the upper end of the air supply pipe is higher than the upper end of the floating assembly;

[0037] The air outlet at the lower end of the air supply pipe is close to one side of the cathode plate, and is used to provide an oxygen environment near the cathode plate.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The present invention places an aeration component from above a water body into a water body that needs to be aerated. After being placed into the water body, the aeration component and the power generation unit sink into the water body and suspend in the middle of the water body under the buoyancy between the floating component and the water body. At this time, organic matter in the water body enters the power generation component with the water body. The power generation component directly converts the chemical energy in the organic matter into electrical energy and continuously supplies the air blowing component. The air blowing component continuously blows wind into the aeration component, so that the aeration component continuously aerates the water body. Since the aeration device is suspended in the water body, when the aeration position needs to be switched, the aeration device can be directly moved, thereby realizing that the aeration device can flexibly switch positions. In addition, the organic matter concentrations corresponding to different positions in the water body are different. The higher the concentration, the more power generation per unit time of the power generation component, and the greater the wind blown by the air blowing component, so that the aeration amount can be adaptively changed according to the change in the organic matter concentration in the water body. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 This is a schematic diagram of the internal structure of the aeration unit of the present invention;

[0042] Figure 3 This is a diagram showing the coordination relationship between the power generation unit and the aeration unit of the present invention;

[0043] Figure 4 This is a schematic diagram of the internal structure of the aeration assembly of the present invention;

[0044] Figure 5 This is a schematic diagram of the internal structure of the air blast assembly of the present invention;

[0045] Figure 6 It is a working schematic diagram of the power generation unit of the present invention.

[0046] Figure numerals: 1, power generation unit; 11, power generation assembly; 111, box; 112, anode tank; 113, cathode tank; 114, proton exchange membrane; 115, water inlet; 116, water outlet; 117, first fan; 12, air blowing assembly; 121, air blowing sleeve; 122, conductive wire; 123, anode plate; 124, cathode plate; 125, cushion block; 126, second fan; 1261, drive motor; 127, air inlet pipe; 2, aeration unit; 21, aeration assembly; 211, bearing plate; 2111, diversion trough; 212, vertical pipe; 213, horizontal pipe; 214, sinking pipe; 215, aeration head; 2151, exhaust hole; 216, air supply pipe; 22, floating assembly; 221, fixing block; 222, pull rope; 223, floating block. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] See also Figure 1-6 , the present invention provides a technical solution:

[0049] An aeration device based on a microbial fuel cell, comprising:

[0050] The aeration unit 2 includes an aeration assembly 21 placed in the water body for aerating the eutrophic water body, and a floating assembly 22 provided on the upper part of the aeration assembly 21 for suspending the aeration assembly 21 in the eutrophic water body;

[0051] The power generation unit 1 includes a blast assembly 12 disposed at the lower end of the aeration assembly 21 for supplying gas to the aeration assembly 21 , and a power generation assembly 11 disposed at the lower part of the blast assembly 12 for supplying electric energy to the blast assembly 12 .

[0052] It should be noted that: the present invention places the aeration component 21 from above the water body into the water body that needs to be aerated. After being placed in the water body, the aeration component 21 and the power generation unit 1 sink into the water body and hover in the middle of the water body under the buoyancy between the floating component 22 and the water body. At this time, the organic matter in the water body enters the power generation component 11 with the water body. The power generation component 11 directly converts the chemical energy in the organic matter into electrical energy and continuously supplies the air blowing component 12. The air blowing component 12 continuously blows wind into the aeration component 21, so that the aeration component 21 continuously aerates the water body. Since the aeration device is suspended in the water body, when the aeration position needs to be switched, the aeration device can be directly moved, thereby realizing that the aeration device can flexibly switch positions. In addition, the organic matter concentrations corresponding to different positions in the water body are different. The higher the concentration, the more power generation per unit time of the power generation component 11, and the greater the wind blown by the air blowing component 12, so that the aeration amount can be adaptively changed according to the change in the organic matter concentration in the water body.

[0053] As an improvement, Figure 1-2 As shown, the aeration assembly 21 includes:

[0054] A carrier plate 211 is disposed on the upper end of the power generation assembly 11, and a shunt groove 2111 is disposed inside the carrier plate 211;

[0055] A plurality of vertical tubes 212 are provided at the upper end of the bearing plate 211;

[0056] A horizontal tube 213, fixedly connected to one side of the vertical tube 212;

[0057] The aeration head 215 is disposed at the lower portion of the transverse pipe 213 , and a plurality of exhaust holes 2151 are disposed at the lower end of the aeration head 215 for aerating the water body.

[0058] Further, such as Figure 2 As shown, the lower end of the horizontal pipe 213 is fixedly connected to the sinking pipe 214, and the aeration head 215 is fixedly connected to the lower end of the lower end pipe. The aeration head 215, the sinking pipe 214, the horizontal pipe 213 and the pipes inside the vertical pipe 212 are all connected;

[0059] The sinking pipe 214, the horizontal pipe 213, and the vertical pipe 212 are sequentially connected to form an n shape.

[0060] As an improvement, Figure 1 As shown, the floating assembly 22 includes:

[0061] Two groups of fixing blocks 221 are fixedly connected to both sides of the carrying plate 211;

[0062] A pull rope 222, fixedly connected to the upper end of the fixing block 221;

[0063] There are two groups of floating blocks 223, which are respectively fixedly connected to the upper ends of the pull ropes 222 corresponding to the two groups of fixed blocks 221. The floating blocks 223 are hollow inside and are used to float on the surface of the water.

[0064] Further, such as Figure 3 As shown, the power generation component 11 includes:

[0065] The box body 111 is disposed at the lower end of the carrying plate 211, and an anode tank 112 and a cathode tank 113 are respectively disposed inside the box body 111;

[0066] The proton exchange membrane 114 is disposed inside the box 111 and between the anode tank 112 and the cathode tank 113;

[0067] An anode plate 123 is disposed inside the anode tank 112;

[0068] A cathode plate 124 is disposed inside the cathode tank 113;

[0069] The conductive wire 122 is connected between the anode tank 112 and the cathode tank 113 , and the upper portion of the conductive wire 122 passes through the inside of the box body 111 to the outside.

[0070] Furthermore, the box 111 and the two sides corresponding to the cathode tank 113 and the anode tank 112 are penetrated from top to bottom with water inlet holes 115 and water outlet holes 116 for continuously replacing the water in the cathode tank 113 and the anode tank 112;

[0071] A first fan 117 is provided inside the water outlet 116 to discharge water from the cathode tank 113 and the anode tank 112;

[0072] A motor is provided on one side of the first fan 117 for driving the first fan 117 to rotate. The electric energy of the motor can be supplied by the conductive wire 122 or by a separate external battery with waterproof material.

[0073] Among them, Figure 3-5 As shown, the air blowing assembly 12 includes:

[0074] A blast sleeve 121, the bottom of which is fixedly connected to the upper end of the box body 111 through a cushion block 125, and the upper end opening of the blast sleeve 121 is communicated with the diversion slot 2111;

[0075] A driving motor 1261 is installed inside the blowing sleeve 121, and the driving motor 1261 is electrically connected to the conductive wire 122;

[0076] A second fan 126, connected to the driving end of the driving motor 1261, for blowing air to the aeration assembly 21;

[0077] The air inlet pipe 127 is connected to the side of the cushion block 125 , and the upper air inlet of the air inlet pipe 127 is higher than the upper end of the floating component 22 . The cushion block 125 is provided with a hole inside for connecting the air outlet of the air inlet pipe 127 with the air inlet of the blowing sleeve 121 .

[0078] In addition, if Figure 3 As shown, the box body 111 is located at the upper end of the cathode tank 113 and is fixedly connected with an air supply pipe 216;

[0079] The air inlet at the upper end of the air supply pipe 216 is higher than the upper end of the floating assembly 22;

[0080] The lower end air outlet of the air supply pipe 216 is close to the cathode plate 124 and is used to provide an oxygen environment near the cathode plate 124;

[0081] Preferably, the air inlet end of the air supply pipe 216 is connected to an air pump, which is not shown in the figure.

[0082] It should be noted that: in the specific implementation process of the present invention, Figure 1As shown, the aeration device is placed in a water body that needs to be aerated. At this time, the power generation unit 1 and the aeration assembly 21 are completely submerged in the water body and under the buoyancy of the water surface on the floating block 223, the floating block 223 generates a pulling force on the fixed block 221 through the pull rope 222, so that the power generation unit 1 and the aeration assembly 21 are suspended in the water body, and the air supply pipe 216 and the air inlet end of the air inlet pipe 127 are both located above the water surface;

[0083] like Figure 3-6 As shown, when the box 111 is suspended inside the water body, the water with organic matter flows through the water inlet hole 115 and the water outlet hole 116 into the anode tank 112 and the cathode tank 113 respectively and submerges the anode plate 123 and the cathode plate 124. At this time, air is sent to the cathode plate 124 through the air supply pipe 216, so that the cathode plate 124 is in an aerobic environment, and the anode plate 123 is in an anaerobic environment. In the anaerobic environment of the anode plate 123, the organic matter in the water is decomposed by the microorganisms and releases electrons and protons. The electrons are effectively transferred between the biological components and the anode by the conductive wire 122 and are transmitted through the external circuit. The oxygen is transferred to the cathode to form a current, and the protons are transferred to the cathode through the proton exchange membrane 114. The oxygen obtains electrons at the cathode and is reduced to combine with the protons to form water. In this process, the current passes through the conductive wire 122, and supplies electric energy to the driving motor 1261, so that the driving motor 1261 drives the second fan 126 to rotate continuously. Under the rotation of the second fan 126, the air passes through the air inlet pipe 127, the cushion block 125, the air blowing sleeve 121, the diverter 2111, the vertical pipe 212, the horizontal pipe 213, the aeration head 215 in sequence, and is finally blown out into the water body through the exhaust hole 2151, completing the aeration of the water body.

[0084] like Figure 3 As shown, in the present invention, during the power generation process in the cathode tank 113 and the anode tank 112, in order to gradually reduce the organic matter concentration in the cathode tank 113 and the anode tank 112, the motor on one side of the first fan 117 is started, so that the motor drives the first fan 117 to rotate, and the first fan 117 pumps out the water in the cathode tank 113 and the anode tank 112. At the same time, the water outside the box body 111 continuously enters the box body 111 from the water inlet hole 115, and the water in the cathode tank 113 and the anode tank 112 is continuously replaced, ensuring that the box body 111 The organic matter concentration in the water body 11 is consistent with the organic matter concentration in the water body outside the box 111. When the box 111 is switched to a different position in the water body, the higher the organic matter concentration in the corresponding water body area, the more intense the decomposition of the organic matter in the box 111, the greater the power supply of the conductive wire 122 to the drive motor 1261, and the faster the blowing speed of the second fan 126, so that the aeration amount can be adaptively changed according to the change of the organic matter concentration at different positions in the water body, avoiding the phenomenon of insufficient aeration in areas with heavy eutrophication;

[0085] like Figure 2 As shown, the present invention connects the vertical pipe 212, the horizontal pipe 213, and the sinking pipe 214 in sequence in an n shape to ensure that the aeration assembly 21 is submerged in the water body, and the water flow does not flow upward from the sinking pipe 214 through the horizontal pipe 213 and the vertical pipe 212 to the diverter trough 2111, thereby preventing the water flow from entering the diverter trough 2111 and causing obstruction to the air blowing work.

[0086] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0087] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aeration device based on a microbial fuel cell, characterized in that: include: An aeration unit (2) comprises an aeration component (21) placed in a water body for aerating the eutrophic water body, and a floating component (22) arranged on the upper part of the aeration component (21) for suspending the aeration component (21) in the eutrophic water body; The power generation unit (1) comprises a blast assembly (12) disposed at the lower end of an aeration assembly (21) for supplying gas to the aeration assembly (21), and a power generation assembly (11) disposed at the lower part of the blast assembly (12) for supplying electric energy to the blast assembly (12).

2. The aeration device based on a microbial fuel cell according to claim 1, characterized in that: The aeration assembly (21) comprises: A bearing plate (211) is arranged at the upper end of the power generation component (11), and a shunt groove (2111) is arranged inside the bearing plate (211); A plurality of vertical tubes (212) are provided on the upper end of the bearing plate (211); A transverse tube (213) fixedly connected to one side of the vertical tube (212); The aeration head (215) is arranged at the lower part of the transverse pipe (213), and a plurality of exhaust holes (2151) are arranged at the lower end of the aeration head (215) for aerating the water body.

3. An aeration device based on a microbial fuel cell according to claim 2, characterized in that: The lower end of the transverse tube (213) is fixedly connected to a sinking tube (214), the aeration head (215) is fixedly connected to the lower end of the lower tube, and the pipelines inside the aeration head (215), the sinking tube (214), the transverse tube (213) and the vertical tube (212) are all interconnected; The sinking pipe (214), the horizontal pipe (213), and the vertical pipe (212) are sequentially connected to form an n-shape.

4. The aeration device based on a microbial fuel cell according to claim 2, characterized in that: The floating assembly (22) comprises: Two groups of fixed blocks (221) are respectively fixedly connected on both sides of the carrying plate (211); A pull rope (222) fixedly connected to the upper end of the fixing block (221); The floating blocks (223) are provided in two groups and are respectively fixedly connected to the upper ends of the pull ropes (222) corresponding to the two groups of the fixed blocks (221); the inside of the floating blocks (223) is hollow and is used to float on the surface of the water body.

5. The aeration device based on a microbial fuel cell according to claim 2, characterized in that: The power generation component (11) comprises: A box body (111) is arranged at the lower end of the carrying plate (211), and an anode tank (112) and a cathode tank (113) are respectively arranged inside the box body (111); A proton exchange membrane (114) is disposed inside the box (111) and between the anode tank (112) and the cathode tank (113); an anode plate (123), arranged inside the anode tank (112); A cathode plate (124) is disposed inside the cathode tank (113); The conductive wire (122) is connected between the anode tank (112) and the cathode tank (113), and the upper portion of the conductive wire (122) passes through the inside of the box (111) to the outside.

6. The aeration device based on a microbial fuel cell according to claim 5, characterized in that: Water inlet holes (115) and water outlet holes (116) are provided on both sides of the box (111) corresponding to the cathode tank (113) and the anode tank (112) from top to bottom, so as to continuously replace the water in the cathode tank (113) and the anode tank (112); A first fan (117) is provided inside the water outlet hole (116) for discharging water from the cathode tank (113) and the anode tank (112).

7. The aeration device based on a microbial fuel cell according to claim 5, characterized in that: The air blowing assembly (12) comprises: A blast sleeve (121), the bottom of which is fixedly connected to the upper end of the box body (111) via a cushion block (125); A driving motor (1261) is installed inside the blowing sleeve (121), and the driving motor (1261) is electrically connected to the conductive wire (122); A second fan (126), connected to the driving end of the driving motor (1261), for blowing air to the aeration assembly (21); An air inlet pipe (127) is connected to the side of the cushion block (125); an air inlet at the upper end of the air inlet pipe (127) is higher than the upper end of the floating assembly (22); and a hole is provided inside the cushion block (125) for connecting the air outlet of the air inlet pipe (127) with the air inlet of the air blowing sleeve (121).

8. The aeration device based on a microbial fuel cell according to claim 5, characterized in that: The box body (111) is located at the upper end of the cathode tank (113) and is fixedly connected with an air supply pipe (216); The air inlet at the upper end of the air supply pipe (216) is higher than the upper end of the floating assembly (22); The air outlet at the lower end of the air supply pipe (216) is close to one side of the cathode plate (124) and is used to provide an oxygen environment near the cathode plate (124).

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