A device for in-situ treatment of algae

Abstract

The present invention discloses an algae in-situ treatment device, including a cyanobacteria collection barrel, an inner shell, an electrode module, and an aeration module. The inner shell is arranged in the cyanobacteria collection barrel, and the inner shell includes an inner shell shell and a water outlet channel. The inner shell shell is fixedly connected to the inner wall of the cyanobacteria collection barrel through a connecting rod, and the water outlet channel is arranged at the top of the inner shell shell. The electrode module is arranged on the inner shell, and the electrode module includes an electrode plate and a gasket. A gasket is arranged between each electrode plate and the inner shell. The aeration module includes an air inlet pipe and an aeration pipe. The air inlet pipe runs through the cyanobacteria collection barrel, and the aeration pipe is arranged on the air inlet pipe in the cyanobacteria collection barrel. The device of the present invention can generate ions through electrolysis of the electrode module to form a flocculent gel, sweep and capture the algae in the water to form flocculation precipitation, and form bubbles in the water body through the airflow of the aeration pipe to disperse and escape, thereby improving the flocculation effect, and the device structure is relatively simple, easy to operate, and does not consume a lot of manpower and material resources.

Description

Technical Field

[0001] The present invention relates to the field of water environment management, and in particular to an algae in-situ treatment device. Background Art

[0002] Blue algae is an important problem in the current lake management. With the increase of lake eutrophication, many lakes in my country will have a large outbreak of blue algae blooms in summer, leading to environmental deterioration. Blue algae blooms are mainly produced in eutrophic water bodies. Their formation is the result of the combined effects of many environmental factors such as the physiological characteristics of blue algae, temperature, light, nutrients, other organisms, etc.

[0003] The control and treatment of cyanobacteria include two major approaches: pollution source control and cyanobacteria treatment. Pollution source control includes external and internal source control. If the internal and external sources can be intercepted, the cyanobacteria treatment effect will be significant. However, in actual projects, it is often difficult to completely intercept the internal and external sources, or it is very costly. Therefore, it is particularly important to suppress and treat cyanobacteria during the flourishing and outbreak periods. In-situ treatment refers to the method of treating pollutants in the polluted area. Compared with removing pollutants from the polluted area, the in-situ treatment method can maintain the vitality of the water body, while strengthening the self-purification function and maintaining a stable ecological balance.

[0004] At present, common in-situ treatment methods for cyanobacteria include physical engineering methods, physical and chemical methods, and biological methods. Physical engineering methods include the use of cyanobacteria enclosures to intercept, the use of mechanical collection and filtration ships, and artificial floating cleaning; physical and chemical methods include the use of flocculation and sedimentation, oxidant killing, etc.; biological methods include the use of biological agents and biological control.

[0005] However, the above-mentioned control methods currently have corresponding defects: physical engineering methods use mechanical or manual collection, which is time-consuming and labor-intensive, and the effect is relatively limited; physical and chemical methods use chemical flocculation and sedimentation, which requires precise control of the dosage, the application process is complicated, and there is a certain risk of water pollution; although the biological bacteria agents used in biological methods are environmentally friendly, their action process is slow and they are easily affected by other pollution factors in the water, making the control efficiency difficult to guarantee. Summary of the invention

[0006] In view of the defects in the prior art, the technical problem solved by the present invention is: for the in-situ treatment of cyanobacteria in lakes, how to improve the removal effect of cyanobacteria and make the structure and operation of the treatment device relatively simple to save manpower and machinery investment.

[0007] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0008] An algae in-situ treatment device includes a cyanobacteria collection barrel, an inner shell, an electrode module, and an aeration module. The inner shell is arranged in the cyanobacteria collection barrel, and the inner shell includes an inner shell body and a water outlet channel. The inner shell body is fixedly connected to the inner wall of the cyanobacteria collection barrel through a connecting rod, and the water outlet channel is arranged on the top of the inner shell body. The electrode module is arranged on the inner shell, and the electrode module includes an electrode plate and a gasket. A fixed point is arranged on the electrode plate, and a gasket is arranged between each electrode plate and the inner shell. The aeration module includes an air inlet pipe and an aeration pipe. The air inlet pipe runs through the cyanobacteria collection barrel, and the aeration pipe is arranged on the air inlet pipe in the cyanobacteria collection barrel.

[0009] Preferably, the blue algae collection barrel comprises a barrel body and an emptying pipe, the emptying pipe runs through the bottom of the barrel body, and an openable and closable baffle is arranged inside the emptying pipe.

[0010] Preferably, a collecting port is provided on the outer side of the top of the barrel body, and the mouth wall of the collecting port is inclined outward relative to the cylinder wall of the barrel body, and the inclination angle range is: 120° to 150°.

[0011] Preferably, the barrel body is equipped with a float or a floating block, the material of the float or the floating block is high-density polyethylene, and is fixedly connected to the barrel body by a latch.

[0012] Preferably, the shape of the inner shell body is cylindrical, the diameter of the cylinder is smaller than the barrel body, the top and bottom of the inner shell body are open, and the top opening is used as the air outlet of the aeration module.

[0013] Preferably, the top opening of the inner shell body is optionally equipped with a mask.

[0014] Preferably, the bottom of the inner shell body is equipped with a screen, and the mesh number of the screen should not exceed 10 meshes.

[0015] Preferably, the electric control module is arranged outside the cyanobacteria collection barrel, and includes a controller and a power supply. The power supply is connected to the controller through a circuit line, and the controller is connected to a fixed point of the electrode plate through a circuit line. A timing relay is arranged in the controller.

[0016] Preferably, the air inlet pipe arranged outside the blue algae collection barrel is connected to the blower through an air inlet duct.

[0017] Preferably, the shape of the electrode plate is an arc, and the angle range of the arc is 120° to 150°.

[0018] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0019] 1. The inner shell, electrode module and aeration module of the in-situ removal device of the blue algae of the present invention can be used in conjunction with each other. The electrode module generates [Fe3+][OH-] plasma through electrolysis to form a flocculent gel, sweeps and captures the blue algae in the water to form flocculation precipitation, separates the algae and water, and disperses the airflow in the water body in the form of bubbles through the aeration pipe of the aeration module, promotes the collision between particles, and improves the flocculation effect. Compared with the conventional flocculation and sedimentation method using chemical flocculants, the flocculation and sedimentation effect of the device on blue algae is better, and it is friendly to the water environment and is not easy to cause secondary pollution. Compared with the method of using biological algaecides, the effect of removing blue algae by the device is stable, will not be weakened by impurities or hydraulic changes in the water body, and has a fast onset of effect, and does not require a long period of biological adaptation and growth;

[0020] 2. The structure of the cyanobacteria in-situ removal device of the present invention is an integrated cyanobacteria collection barrel, inner shell, electrode module and aeration module. Compared with the physical engineering means of using cyanobacteria enclosure interception and mechanical collection and filtration boats, the overall structure of the device is relatively simple and small in size, and will not occupy a large amount of usable space. It is also easy to operate and will not consume a lot of manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of an algae in-situ treatment device according to an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the appearance of an algae in-situ treatment device according to an embodiment of the present invention;

[0024] Figure 3 A schematic cross-sectional structure diagram of an algae in-situ treatment device according to an embodiment of the present invention.

[0025] In the figure: 1-cyanobacteria collection barrel; 11-barrel body; 111-collection port; 12-emptying pipe; 2-inner shell; 21-inner shell shell; 22-water outlet channel; 3-electrode module; 31-electrode plate; 32-gasket; 33-fixing point; 4-aeration module; 41-aeration pipe; 42-inlet pipe; 5-electronic control module; 51-controller; 52-power supply. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0027] like Figure 1 As shown, an algae in-situ treatment device provided by an embodiment of the present invention realizes algae-water separation through the combined action of electrolysis and flotation, and its device structure includes a cyanobacteria collection barrel 1, a hollow inner shell 2, an electrode module 3, and an aeration module 4.

[0028] The inner shell 2 is arranged inside the cyanobacteria collection barrel 1, and the inner shell 2 includes an inner shell body 21 and a water outlet channel 22. The inner shell body 21 is fixedly connected to the inner wall of the cyanobacteria collection barrel 1 through a connecting rod, and the water outlet channel 22 is arranged at the top outer edge of the inner shell body 21, and the position of the water outlet channel 22 should be 3 to 5 cm higher than the collection port 111, so as to drain water outward without hindering the water inlet of the collection port 111.

[0029] The electrode module 3 is arranged on the inner shell 21 (the inner cavity space of the inner shell 21 is used as the space for the electric flocculation reaction). The electrode module 3 includes two electrode plates 31 and a plurality of gaskets 32. The electrode plates 31 are arranged on the inner wall of the inner shell 21. The top of the electrode plates 31 is provided with a fixing point 33 that penetrates the plate body, which is used to fix the electrode plates 31 on the inner shell 2 and connect the electric control module 5 using a fixing assembly. A gasket 32 ​​is arranged between each electrode plate 31 and the inner shell 2 to prevent the electrode plates 31 from being completely in contact with the inner shell 21 and causing an electrical accident. The electrode module 3 is used for electrolysis to generate [Fe3 + ][OH - ] plasma to form flocculent gel, which sweeps and captures the blue algae in the water to form flocculation precipitation and separate the algae from the water.

[0030] The aeration module 4 includes an air inlet pipe 42 and an aeration pipe 41. The air inlet pipe 42 is installed on the cyanobacteria collection barrel 1. A part of the air inlet pipe 42 is installed outside the cyanobacteria collection barrel 1, and the other part is installed in the bottom space of the cyanobacteria collection barrel 1. The aeration pipe 41 is installed on the air inlet pipe 42 in the cyanobacteria collection barrel 1, and is used to disperse the air flow in the water in the form of bubbles, promote the collision between particles, and improve the flocculation effect. At the same time, the setting of the aeration pipe 41 can promote the formation of air-driven water flow in the cyanobacteria collection barrel 1, so as to drive the algae-containing water body before treatment to enter the cyanobacteria collection barrel 1, and the water body with flocculated sediment after treatment is discharged from the cyanobacteria collection barrel 1, so as to achieve a circulating flow state of water body inside and outside the barrel.

[0031] The effects of the above structural design are:

[0032] 1. The inner shell 2, electrode module 3 and aeration module 4 of the in-situ removal device of blue algae of the present invention can be used in conjunction with each other. The electrode module 3 generates [Fe3+][OH-] plasma through electrolysis to form a flocculent gel, sweeps and captures blue algae in the water to form flocculation precipitation, separates algae and water, and disperses the airflow in the water body in the form of bubbles through the aeration pipe 41 of the aeration module 4, promotes collision between particles, and improves the flocculation effect. Compared with the conventional flocculation and sedimentation method using chemical flocculants, the flocculation and sedimentation effect of the device on blue algae is better, and it is friendly to the water environment and is not easy to cause secondary pollution. Compared with the method of using biological algaecides, the effect of removing blue algae by the device is stable, will not be weakened by impurities or hydraulic changes in the water body, and has a fast onset of effect, and does not require a long period of biological adaptation and growth;

[0033] 2. The structure of the cyanobacteria in-situ removal device of the present invention is an integrated cyanobacteria collection barrel 1, an inner shell 2, an electrode module 3, an aeration module 4 and an electric control module 5 arranged outside the cyanobacteria collection barrel 1. Compared with the physical engineering means of using cyanobacteria enclosure interception and mechanical collection and filtering boats, the overall structure of the device is relatively simple and small in size, does not occupy a large amount of use space, is easy to operate, and does not consume a lot of manpower and material resources.

[0034] Furthermore, the cyanobacteria collection barrel 1 includes a barrel body 11 and an emptying pipe 12. The shape of the barrel body 11 is cylindrical, the top of the barrel body 11 is open, and the bottom of the barrel body 11 is closed. The shape of the bottom of the barrel body 11 can be flat or conical. If a conical bottom is selected, the taper should not exceed 10°. The emptying pipe 12 runs through the bottom of the barrel body 11, and a baffle for opening and closing is provided in the emptying pipe 12. The emptying pipe 12 is provided to empty the remaining water in the barrel body 11 when the device is used up or suspended for maintenance.

[0035] Furthermore, a collecting port 111 is provided on the outer side of the top of the barrel body 11, which is used to allow the algae-containing water to enter the barrel body 11. The mouth wall of the collecting port 111 is inclined outward relative to the cylindrical wall of the barrel body 11, and the inclination angle range can be selected as: 120°~150°. The purpose of forming the corresponding inclination angle is to form a certain guiding effect, so that the algae-containing water can smoothly enter the barrel body 11 at a certain flow rate.

[0036] Furthermore, a float or a floating block is optionally installed on the surface of the barrel body 11 of the cyanobacteria collection barrel 1. The material of the float or the floating block is plastic, specifically HDPE (high-density polyethylene), and is connected to the barrel body 11 by a latch, so that the collection port 111 of the cyanobacteria collection barrel 1 is flush with the water surface before use, so as to facilitate the algae-containing water to enter the barrel body 11.

[0037] Furthermore, the shape of the inner shell body 21 is selected to be cylindrical, the diameter of the cylinder is smaller than the barrel body 11, the top and bottom of the inner shell body 21 are open, and the top opening is used as the air outlet of the aeration module 4 (under the air drive action of the aeration pipe 41, bubbles will only emerge from the opening at the top of the inner shell body 21, and will not affect the inflow process of the algae-containing water body between the inner shell body 2 and the inner wall of the barrel body 11).

[0038] Furthermore, the opening at the top of the inner shell body 21 can be optionally equipped with a mask to block the falling objects from above the device and ensure the gas discharge efficiency of the opening used as the outlet of the aeration module 4. The shape of the mask can be a solid plate or a mesh, and is not limited to the above shape on the basis of ensuring that the masking area does not exceed 1 / 3 of the opening area and has a certain shielding effect.

[0039] Furthermore, a screen can be optionally provided in the space at the bottom of the inner shell body 21. The mesh number of the screen should not exceed 10. The purpose of setting a screen with a certain mesh number is to screen out floating objects in the algae-containing water body, but it will not affect the algae that need to enter the inner shell body 21 for in-situ removal.

[0040] Furthermore, the electric control module 5 is arranged outside the cyanobacteria collection barrel 1, and the electric control module 5 includes a controller 51 and a power supply 52. ​​The power supply 52 is connected to the controller 51 through a circuit line, and the controller 51 is connected to the top of the electrode plate 31 of the electrode module 3 through a circuit line, so that the power supply 52 can supply power to the controller 51 and the electrode plate 31 at the same time. A timing relay is arranged in the controller 51 for inverting the positive and negative poles at a fixed time, and the inversion period is selected to be 5-10 minutes. The power supply 52 selects a DC regulated power supply 52, and the voltage amplitude range is selected to be 10 to 30V.

[0041] Furthermore, the air inlet pipe 42 of the aeration module 4 arranged outside the cyanobacteria collection barrel 1 can be connected to the blower through the air inlet pipe. Through the operation of the blower, the aeration module 4 obtains the air flow source. Too much or too little air flow will affect the formation of flocs. In this embodiment, the air flow range of the blower is selected to be 5-10L / min.

[0042] Furthermore, the shape of the electrode plate 31 is selected to be an arc shape so that it can be closely set with the inner shell body 21, and the angle range of the arc is selected to be 120°~150°, so as to ensure that the electric flocculation reaction of the two electrode plates 31 can fully cover the inner cavity space of the inner shell 2 and carry out more thorough flocculation and sedimentation of the algae. In this embodiment, the material of the electrode plate 31 can be cast iron or stainless steel, with a thickness range of 2~5cm.

[0043] From the above structural design points, it can be seen that the use process of the algae in-situ treatment device of the present invention is as follows:

[0044] This device is suitable for lakes in the stage of blue algae outbreak or water environment with high algae density;

[0045] Step 1: Install a float or a floating block on the barrel body 11 of the blue algae collection barrel 1, and connect the blower to the air inlet pipe on the barrel body 11 through the air inlet pipe, connect the circuit line of the power supply 52 to the controller 51, and connect the controller 51 to the fixed point 33 of the electrode plate 31 through another circuit line;

[0046] Step 2: float the blue algae collection barrel 1 connected with the air inlet pipe and the circuit line on the water surface through a float or a floating block, and keep the collection port 111 flush with the horizontal plane;

[0047] Step 3: Turn on the power supply 52 and the blower, the voltage is 10-30V, the electrodes are inverted every 5-10min, the air flow rate is 5-10L / min, and the device is powered and supplied with air. At this time, the aeration pipe 41 in the aeration module 4 of the device starts aeration, and the algae-containing water at the collection port 111 begins to enter the barrel body 11 from the channel between the inner shell 2 and the barrel body 11 and contacts the aeration pipe 41. As the water level in the barrel body 11 continues to rise, the algae-containing water contacts the powered The electrode plate 31 collides with the iron-containing colloid produced by the electrode plate 31 to form floccules. Under the flotation effect of the bubbles generated in the aeration pipe 41, the formation of flocculation precipitation is accelerated, and the flocculated and settled water flows out of the water outlet channel 22 to the outside of the barrel 11 and settles to the bottom of the water, or the water outlet channel 22 is connected to a farther place through a hose to promote the return of algae in a larger area. Under the air drive effect of the aeration module 4, a circulating flow state is formed in the barrel 11, so that the device can continue to work continuously;

[0048] Step 4: After the device has been running for a period of time, the algae density of the algae-containing water body around the device is reduced to below a certain value, or too many floating objects screened out on the screen in the device have hindered the flow of the water body, or the device needs to be repaired, turn off the power supply 52 and the blower switch, retract or move the blue algae collection barrel 1 floating in the water body to another water body, and empty the remaining water in the barrel through the drain pipe 12 to clean the screen, maintain the device, or settle and remove another water body with a larger algae density.

[0049] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0050] It should be noted that, in this application, relational terms such as "first" and "second" 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. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0051] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An algae in-situ treatment device, comprising a cyanobacteria collection barrel (1), an inner shell (2), an electrode module (3), and an aeration module (4), characterized in that: The inner shell (2) is arranged in the blue algae collection barrel (1), and the inner shell (2) comprises an inner shell body (21) and a water outlet channel (22). The inner shell body (21) is fixedly connected to the inner wall of the blue algae collection barrel (1) via a connecting rod, and the water outlet channel (22) is arranged at the top of the inner shell body (21) and is used to discharge the treated water to the outside. The electrode module (3) is arranged on the inner shell (2) and is used for generating ions by electrolysis to form a flocculent gel, sweeping and capturing blue algae in water to form flocculated sediments. The electrode module (3) comprises an electrode plate (31) and a gasket (32). A fixing point (33) is arranged on the electrode plate (31). A gasket (32) is arranged between each electrode plate (31) and the inner shell (2). The aeration module (4) comprises an air inlet pipe (42) and an aeration pipe (41), wherein the air inlet pipe (42) passes through the blue algae collection barrel (1), and the aeration pipe (41) is arranged on the air inlet pipe (42) in the blue algae collection barrel (1) to promote the formation of an air-driven water flow in the blue algae collection barrel (1) to achieve a water circulation flow state inside and outside the barrel; The blue algae collection barrel (1) comprises a barrel body (11) and an emptying pipe (12), wherein the emptying pipe (12) runs through the bottom of the barrel body (11), and an openable and closable baffle is arranged in the emptying pipe (12) for emptying the remaining water in the barrel body (11); The top outer side of the barrel body (11) is provided with a collecting port (111) for collecting algae-containing water and entering the barrel body (11). The mouth wall of the collecting port (111) is inclined outward relative to the cylinder wall of the barrel body (11), and the inclination angle range is: 120° to 150°; The top of the barrel (11) is open; The shape of the inner shell body (21) is cylindrical, the diameter of the cylinder is smaller than the barrel body (11), the top and bottom of the inner shell body (21) are open, and the top opening is used as the air outlet of the aeration module (4).

2. The algae in-situ treatment device according to claim 1, characterized in that: The barrel body (11) is optionally provided with a buoy or a floating block, the material of which is high-density polyethylene and is fixedly connected to the barrel body (11) by means of a latch, so as to allow the blue algae collection barrel (1) to float on the water surface.

3. The algae in-situ treatment device according to claim 1, characterized in that: The top opening of the inner shell (21) is optionally equipped with a shielding member for blocking objects falling from above the device.

4. The algae in-situ treatment device according to claim 1, characterized in that: The bottom of the inner shell (21) is optionally equipped with a screen, the mesh number of which should not exceed 10, for screening out some floating objects in the algae-containing water body.

5. The algae in-situ treatment device according to claim 1, characterized in that: The electric control module (5) is arranged outside the cyanobacteria collection barrel (1), and comprises a controller (51) and a power supply (52). The power supply (52) is connected to the controller (51) via a circuit line, and the controller (51) is connected to a fixed point (33) of the electrode plate (31) via a circuit line. A timing relay is arranged in the controller (51) for inverting the positive and negative poles of the power supply (52) at a fixed time.

6. The algae in-situ treatment device according to claim 1, characterized in that: The air inlet pipe (42) arranged outside the blue algae collection barrel (1) is connected to the blower through an air inlet duct, and is used to provide air flow for the aeration module (4).

7. The algae in-situ treatment device according to claim 1, characterized in that: The shape of the electrode plate (31) is an arc shape, and the angle range of the arc is 120° to 150°.

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