Closed microalgae culture treatment device for pollutant treatment and carbon sequestration

Abstract

The invention discloses a closed microalgae culture treatment device for pollutant treatment and carbon sequestration, and relates to the technical field of pollutant treatment.The closed microalgae culture treatment device is characterized in that a closed pipeline culture device in the prior art is modified, and adherent microalgae are cleaned by arranging a cylindrical sliding block in a tubular culture treatment unit; a plurality of annular air bags with adjustable expansion and contraction are arranged on the side wall of the cylindrical sliding block; an independent pipe body is arranged to be responsible for conveying a culture solution into the tubular culture treatment unit and outputting the culture solution from the tubular culture treatment unit; a channel for a culture solution to flow is formed in the cylindrical sliding block, and the culture solution is efficiently stirred in the moving process of the cylindrical sliding block; the closed microalgae culture treatment device for pollutant treatment and carbon sequestration has the technical effects that the cleaning strength of the closed microalgae culture treatment device for the pollutant treatment and the carbon sequestration is adjustable, the cleaning effect is stable, the microalgae culture solution is not easy to pollute during transfer, and the stirring efficiency of the microalgae solution is high.

Description

Technical Field

[0001] The present invention relates to the technical field of pollutant treatment, and in particular to a closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation. Background Art

[0002] In the prior art, the unique properties of supercritical water can be used to efficiently decompose and transform waste; the main component of the waste gas generated by the supercritical water treatment system is carbon dioxide, the main component of the waste water generated is some difficult-to-degrade organic matter, and the main component of the waste residue generated is metal salts; and microalgae have many advantages such as fast growth rate, strong carbon fixation ability, high photosynthesis efficiency, and high energy product yield. In the prior art, in order to meet the needs of carbon fixation and the cultivation of microalgae, the supercritical water treatment system is generally connected in series with the microalgae cultivation system, and the waste gas and wastewater obtained by the supercritical water treatment system are used to cultivate microalgae.

[0003] The devices mainly used in the microalgae cultivation system are open devices and closed devices; the open devices are mainly runway-type shallow water devices, curtain-type devices, etc. Although these devices have low investment costs, they are open, and the conditions for cultivating microalgae are uncontrollable and easily affected by weather, temperature, etc., which is not conducive to large-scale production and processing; the closed devices are mainly columnar devices, cube devices, spherical devices and pipeline devices; these devices can overcome the influence of external conditions, and can effectively control the scale, volume, specific surface area, and floor space, and can improve gas exchange and increase its utilization rate; However, during the cultivation process, since microalgae are photoautotrophic organisms, they are very sensitive to parameters such as temperature, pH value, dissolved oxygen, culture medium concentration, and light intensity during their growth process. Due to competition for nutrients and light, cells form a serious wall adhesion phenomenon, which weakens the light reaching the inside of the reactor, thereby affecting the growth and reproduction of the internal algae cells. In order to ensure the growth and reproduction of algae cells, the closed microalgae cultivation system needs to be cleaned regularly, and the maintenance cost and complexity are both high, which affects the continuity of the treatment, and thus brings a series of troubles and constraints to the actual treatment and cultivation work.

[0004] In order to ensure sufficient light during the cultivation of microalgae and meet the needs of convenient regular cleaning, the Chinese invention patent with the authorization announcement number CN101906380B discloses a closed pipeline cultivation device for bait microalgae and a microalgae pipeline cultivation method, which cleans the microalgae attached to the wall by scraping to ensure light, and relies on the introduction of carbon dioxide gas to stir the algae liquid to promote the growth and reproduction of microalgae;

[0005] Although the above scheme can achieve all-weather high-density cultivation of microalgae to a certain extent; however, due to its own structural limitations, the scraping of microalgae depends on the rubber ring that presses against the inner wall of the cylinder, and the scraping and cleaning force cannot be adjusted; and microalgae and other debris will accumulate on the rubber ring over time, resulting in the cleaning effect gradually deteriorating over time (poor effect stability) and easily scratching the cylinder wall, affecting the light input and thus affecting the overall service life of the device; and the algae liquid uses the same tube body to enter and exit the transparent pipe, which is easy to contaminate the treated microalgae culture liquid; in addition, the above scheme completely relies on the carbon dioxide output from the micropores on the air inlet pipe to float and stir the culture liquid for the stirring of the algae liquid, and the stirring efficiency is low and the effect is poor.

[0006] Therefore, there is a need for a closed microalgae cultivation and processing device for pollutant treatment and carbon fixation, which has adjustable cleaning force for adherent microalgae, stable cleaning effect, is not easy to be contaminated when the microalgae culture solution flows, and has high stirring efficiency and good effect for the algae solution. Summary of the invention

[0007] The embodiments of the present application provide a closed microalgae cultivation and processing device for pollutant treatment and carbon fixation, thereby solving the technical problems in the prior art that the closed pipeline cultivation device is limited by its own structure, the scraping and cleaning force for the wall-attached microalgae cannot be adjusted, the cleaning effect is poorly stable, the treated microalgae culture solution is easily contaminated, and the stirring efficiency for the microalgae is low; the closed microalgae cultivation and processing device for pollutant treatment and carbon fixation achieves the technical effects that the cleaning force for the wall-attached microalgae is adjustable, the cleaning effect is stable, the microalgae culture solution is not easily contaminated during transfer, and the stirring efficiency for the algae solution is high.

[0008] The embodiment of the present application provides a closed microalgae cultivation and processing device for pollutant treatment and carbon fixation, including a basic inlet and outlet liquid pipe, a top pipe group, and a cultivation and processing unit;

[0009] The basic inlet and outlet liquid pipes are arranged horizontally, and there are two of them, which are used to input and output culture liquid to the culture processing unit respectively; the top pipe group is positioned at the top of the culture processing unit, and is used to transport carbon dioxide, water and nutrients into the culture processing unit;

[0010] The number of the culture processing units is multiple, they are columnar, arranged longitudinally and arranged in a row on the ground, and fixed on the ground by a fixing bracket;

[0011] The culture processing unit has a built-in multifunctional column, a lamp column shell and a column shifting assembly for driving the multifunctional column to move up and down; the lamp column shell is arranged longitudinally and has a built-in lamp column; the multifunctional column is provided with a through hole for the lamp column shell to penetrate, a through hole for the circulation of culture liquid, and a built-in pump air assembly; the side walls of the through hole for the lamp column shell to penetrate and the side walls of the multifunctional column are provided with elastic rubber hollow rings that are separately connected to the pump air assembly.

[0012] Furthermore, the culture processing unit comprises a bottom connection barrel, a closed tube, a top loading tube, and an upper closed cover; the bottom connection barrel is a hard barrel body with an open top;

[0013] The sealing tube is a hard tube made of transparent material, arranged longitudinally, and the bottom is fixed to the top of the bottom connection barrel;

[0014] The top-loading pipe is a hard pipe body, which plays a connecting role, is arranged longitudinally, and the bottom is fixed to the top of the closed pipe;

[0015] The upper closing cover is a hard plate body, which can be detachably fixed on the top of the top loading pipe to close the top of the top loading pipe; the upper closing cover is provided with a water inlet, a material adding port, an exhaust valve and an air inlet.

[0016] Further, the multifunctional column is cylindrical as a whole, and includes a column body, a pump gas assembly, a lamp cleaning ring and a jacket cleaning ring;

[0017] The column body is a hard cylinder, arranged longitudinally, and is provided with a first through hole for the lamp column shell to pass through, a liquid channel hole for the culture liquid to flow through, and an injection port;

[0018] The axial direction of the first through hole and the liquid channel hole is the same as the axial direction of the column body;

[0019] The injection port is positioned at the bottom of the column body and is connected to the pump gas assembly;

[0020] The pump gas assembly is a combination of an air pump, an air valve and an air delivery pipe, which is positioned inside the column body, and its gas inlet is connected to the air inlet through an air delivery hose;

[0021] The lamp cleaning ring is a hollow elastic rubber ring, the outer ring of which is fixed on the inner wall of the first through hole, and the inner space is connected to the pump air assembly;

[0022] The outer sleeve cleaning ring is an elastic rubber hollow ring, which is sleeved on the outer wall of the column body and the inner ring is fixed on the outer wall of the column body. The inner space is connected to the pump air component and expands and contracts under the control of the control unit;

[0023] The column displacement assembly is a winch structure.

[0024] Preferably, a hole-blocking expansion and contraction ring is positioned near the end of each of the liquid channel holes;

[0025] The hole plugging expansion and contraction ring is an elastic rubber hollow ring, the outer ring of which is fixed on the inner wall of the liquid channel hole, and the inner space is connected to the pump gas component, and expands and contracts under the control of the control unit;

[0026] During the lifting and lowering of the multifunctional column, the two hole-blocking expansion and contraction rings change their volumes successively or simultaneously, thereby changing the inlet and outlet diameters of the liquid channel holes and greatly increasing the turbulence.

[0027] Preferably, an extension tube is fixed at the bottom of the feed inlet;

[0028] A material-adding through hole and a material storage bin are positioned on the column body; the extension tube is a hard tube body arranged longitudinally;

[0029] The diameter of the material-adding through hole is larger than the diameter of the extension tube, and the axial direction is the same as the axial direction of the column body;

[0030] The positions near both ends of the feeding through hole are both provided with plugging hole expansion and contraction rings; the storage bin is located inside the column body and is used for temporarily storing nutrients;

[0031] The material adding through hole is communicated with the material storage bin and passes through the material storage bin.

[0032] Preferably, there are three outer sleeve cleaning rings, which are arranged in a row, with the side ring bodies located at the upper and lower ends and the middle ring body located in the middle; the middle ring body is densely covered with two rows of fine holes arranged in a ring shape; the two rows of fine holes are respectively facing the two side ring bodies when the middle ring body is in an expanded state; when the attached microalgae are cleaned normally, only the side ring bodies swell and touch the wall of the closed tube; when the outer sleeve cleaning ring needs to be cleaned, the side ring bodies are controlled to expand and contract frequently and the middle ring body is controlled to expand and spray airflow to assist the cleaning.

[0033] Preferably, it also includes a resistance cloth;

[0034] The abutment cloth corresponds to the side ring body one by one, and is in the form of an annular sheet. Both ends can be detachably fixed on the side wall of the column body, and together with the side wall of the column body, it surrounds the side ring body; when the side ring body expands, the abutment cloth replaces the side ring body to abut the tube wall.

[0035] Preferably, there are multiple side ring bodies located on one side of the middle ring body, and each of them is individually connected to the pump air assembly;

[0036] A piece of abutment cloth covers all the side ring bodies on one side of the middle ring body; when in use, only one side ring body is controlled to expand and hold up the abutment cloth, so that one piece of abutment cloth has a plurality of annular areas that can adhere to the wall, thereby shortening the replacement cycle.

[0037] Preferably, it also includes a resisting cloth, an elastic connecting body and a pulling rod;

[0038] The abutment cloth corresponds to the side ring body one by one, and is in the form of a circular ring-shaped sheet, with its two ends respectively positioned on the elastic connecting body and the pulling rod, and together with the side wall of the column body, surrounds the side ring body; when the side ring body expands, the abutment cloth replaces the side ring body to abut against the tube wall;

[0039] The side wall of the column body is provided with a first annular groove and a second annular groove, which are arranged close to the side ring body and are respectively located on both sides of the side ring body, and are used to accommodate the elastic connecting body and the pulling rod respectively;

[0040] The elastic connector is an annular elastic sheet, one end of which is fixed to the bottom of the first annular groove, and the other end is fixed to one end of the abutting cloth, and is always in a stretched state;

[0041] The pulling rod is an electric telescopic rod, which is arranged horizontally, with one end fixed to the bottom of the second annular groove and the other end fixed to the other end of the contact cloth; one contact cloth corresponds to three or more pulling rods; the pulling rods located in the same groove are equidistant from each other and extend and retract synchronously.

[0042] Preferably, the abutment cloth is composed of a plurality of annular cloths of different materials, and the annular cloths of different materials have different scraping effects on the adherent microalgae. When in use, the abutment cloths of different materials can be replaced according to needs.

[0043] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0044] The closed pipe culture device in the prior art is modified, and the wall-adherent microalgae are cleaned by setting a cylindrical slider in the tubular culture processing unit, and a plurality of annular air bags with adjustable expansion and contraction are set on the side wall of the cylindrical slider; an independent tube body is set to be responsible for conveying culture solution to the tubular culture processing unit and outputting culture solution from the tubular culture processing unit; a channel for the circulation of culture solution is set on the cylindrical slider, and the culture solution is efficiently stirred during the movement of the cylindrical slider; the technical problems that the closed pipe culture device in the prior art is limited by its own structure, the scraping and cleaning force for the wall-adherent microalgae cannot be adjusted, the cleaning effect is poor in stability, the treated microalgae culture solution is easily contaminated, and the stirring efficiency of the microalgae is low are effectively solved; thereby achieving the technical effects that the closed microalgae culture processing device for pollutant treatment and carbon fixation has adjustable cleaning force for the wall-adherent microalgae, stable cleaning effect, microalgae culture solution is not easily contaminated during transfer, and the stirring efficiency of the algae solution is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the overall structure of the closed microalgae cultivation and processing device for pollutant treatment and carbon fixation in this application;

[0046] Figure 2 This is a schematic diagram of the appearance and structure of the closed microalgae cultivation and processing device for pollutant treatment and carbon fixation in this application;

[0047] Figure 3 This is a schematic diagram of the appearance structure of the culture processing unit;

[0048] Figure 4 It is a schematic diagram of the internal structure of the culture processing unit;

[0049] Figure 5 It is a schematic diagram of the local structure of the culture processing unit;

[0050] Figure 6 It is a schematic diagram of the positional relationship between the components of the culture processing unit;

[0051] Figure 7 A schematic diagram of the positional relationship between the upper closing cover and the multifunctional column;

[0052] Figure 8 It is a structural schematic diagram of a multifunctional column;

[0053] Fig. 9 It is a schematic diagram of the bottom structure of the multifunctional column;

[0054] Fig.10 This is a simplified diagram of the internal structure of the multifunctional column;

[0055] Fig.11 It is a schematic diagram of the positional relationship between the pump gas assembly and the side ring body;

[0056] Fig.12 It is a schematic diagram of the positional relationship among the column body, the elastic connector, the pulling rod and the resistance cloth;

[0057] Fig.13 This is a schematic diagram of the structure of the resistance cloth.

[0058] In the figure:

[0059] Horizontally placed liquid inlet pipe 001, horizontally placed liquid outlet pipe 002, top air inlet pipe 003, top water supply pipe 004, top supply pipe 005, fixed bracket 006, bottom connection barrel 100, closed pipe 200, top load pipe 300, upper closed cover 400, water inlet 410, feed port 420, extension pipe 430, exhaust valve 440, air inlet 450, air hose 460, lamp post housing 500, post body 610, first through hole 611, feed through hole 61 2. Storage bin 613, liquid channel hole 614, hose placement hole 615, gas nozzle 616, pump gas assembly 620, lamp cleaning ring 630, hole plugging expansion ring 640, orifice rotating rod 650, side ring body 661, resistance cloth 662, middle ring body 663, first annular groove 664, second annular groove 665, elastic connecting body 666, pulling rod 667, top reel 710, bottom reel 720, pulling rope 730, reel driving assembly 740. DETAILED DESCRIPTION

[0060] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0061] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0063] Embodiment 1

[0064] like Figure 1 and Figure 2 As shown, the closed microalgae cultivation and processing device for pollutant treatment and carbon fixation of the present application includes a basic inlet and outlet liquid pipe, a top pipe group, a cultivation and processing unit, a fixed bracket 006, a power component and a control unit.

[0065] The basic inlet and outlet liquid pipes are horizontally placed hard pipes, and there are two of them. Both ends of the two pipes are provided with valve bodies (preferably solenoid valves controlled by a control unit) for controlling the on-off of the pipeline; the two basic inlet and outlet liquid pipes are respectively a horizontal inlet pipe 001 and a horizontal outlet pipe 002, both of which are connected to the culture treatment unit, and are respectively used to transport culture solution (i.e., contaminated water after supercritical water treatment) to the culture treatment unit and to transport algae solution (a mixture of culture solution and microalgae) out of the culture treatment unit.

[0066] Furthermore, the horizontal liquid inlet pipe 001 is connected to the bottom of the culture processing unit through a first connecting pipe, and the horizontal liquid outlet pipe 002 is connected to the bottom of the culture processing unit through a second connecting pipe. The first connecting pipe and the second connecting pipe are both provided with a valve body (preferably an electromagnetic valve controlled by a control unit) for controlling the opening and closing of the pipeline.

[0067] The top pipe group is a combination of multiple transport pipes, which is positioned at the top of the culture processing unit and connected to the culture processing unit, and is used to transport carbon dioxide, water and nutrients from the top of the culture processing unit into the culture processing unit (the nutrients are prior art, and vary depending on the type of microalgae cultured, so they are not described here).

[0068] Furthermore, the top pipe group includes a top air intake pipe 003, a top water replenishment pipe 004 and a top replenishment pipe 005; the top air intake pipe 003, the top water replenishment pipe 004 and the top replenishment pipe 005 are all connected to the interior of the culture processing unit, and are respectively used to transport carbon dioxide, water and some nutrients required for culturing microalgae into the culture processing unit.

[0069] like Figures 3 to 10 As shown, the number of the culture processing units is multiple, which are columnar, arranged longitudinally and arranged in a row on the ground, and fixed on the ground by a fixing bracket 006;

[0070] The fixed bracket 006 is a plate-shaped, rod-shaped or frame-shaped structure, and plays a role of bearing support;

[0071] The culture processing unit includes a bottom connection barrel 100, a closed tube 200, a top loading tube 300, an upper closed cover 400, a lamp post housing 500, a multifunctional post and a post shifting assembly for driving the multifunctional post to move up and down;

[0072] The bottom connection barrel 100 is a hard barrel body with an opening at the top, and the bottom is connected to the horizontal liquid inlet pipe 001 and the horizontal liquid outlet pipe 002 respectively through the first connecting pipe and the second connecting pipe;

[0073] The sealing tube 200 is a hard tube made of transparent material, arranged longitudinally, and the bottom is fixed to the top of the bottom connection barrel 100;

[0074] The top-loading pipe 300 is a hard pipe body, which plays a connecting role, is arranged longitudinally, and the bottom is fixed to the top of the closed pipe 200;

[0075] The upper closing cover 400 is a hard plate body, which can be detachably fixed on the top of the top loading tube 300 to close the top of the top loading tube 300; a water inlet 410, a material addition port 420, an exhaust valve 440 and an air inlet 450 are positioned on the upper closing cover 400; the water inlet 410 is connected to the top water replenishment pipe 004, the material addition port 420 is connected to the top replenishment pipe 005, and the air inlet 450 is connected to the top air intake pipe 003; the exhaust valve 440 is controlled by a control unit and is used to discharge oxygen in the culture processing unit (to avoid oxidative damage to algae cells caused by excessive dissolved oxygen).

[0076] The lamp post housing 500 is a hollow hard column made of transparent material, with a lamp post inside, which is arranged longitudinally, and its two ends are directly fixed on the inner bottom of the upper closing cover 400 and the bottom connecting barrel 100 or indirectly fixed on the top loading tube 300 and the bottom connecting barrel 100 through a bracket.

[0077] The multifunctional column is cylindrical in shape as a whole, and is slidably positioned in the closed tube 200, and plays the role of cleaning the microalgae attached to the wall and stirring the culture solution, and includes a column body 610, a pump gas component 620, a lamp cleaning ring 630 and a jacket cleaning ring;

[0078] The column body 610 is a hard cylinder, arranged longitudinally, and is provided with a first through hole 611 for the lamp column housing 500 to pass through, a liquid channel hole 614 for the culture liquid to flow through, and an injection port; the axial direction of the first through hole 611 and the liquid channel hole 614 is the same as the axial direction of the column body 610;

[0079] The injection port is located at the bottom of the column body 610 and is connected to the pump gas assembly 620 for injecting carbon dioxide gas downward;

[0080] The pump gas assembly 620 is a combination of an air pump, an air valve and an air delivery pipe, and is positioned inside the column body 610, and its gas inlet port is connected to the air inlet 450 through the air delivery hose 460;

[0081] The lamp cleaning ring 630 is an elastic rubber hollow ring, the outer ring of which is fixed on the inner wall of the first through hole 611, and the inner space is connected to the pump air assembly 620, and expands and contracts under the control of the control unit; when it is necessary to clean the microalgae attached to the lamp post housing 500, the lamp cleaning ring 630 is controlled to expand and contact the lamp post housing 500;

[0082] The outer sleeve cleaning ring is an elastic rubber hollow ring, which is sleeved on the outer wall of the column body 610 and the inner ring is fixed on the outer wall of the column body 610. The internal space is connected to the pump air component 620 and expands and contracts under the control of the control unit. When it is necessary to clean the wall-adhering microalgae on the closed tube 200, the outer sleeve cleaning ring is controlled to expand and contact the inner wall of the closed tube 200. After the outer sleeve cleaning ring has been used for a period of time, its expansion and contraction are controlled to make it shake and then shake off the debris adhered to it, thereby ensuring the stability of the cleaning effect.

[0083] Preferably, there are multiple outer sleeve cleaning rings.

[0084] The column shifting assembly is used to drive the multifunctional column to slide up and down, and is preferably a winch structure.

[0085] Furthermore, the column shifting assembly includes a top reel 710, a bottom reel 720, a pulling rope 730 and a reel driving assembly 740; the top reel 710 and the bottom reel 720 are respectively positioned on the top loading tube 300 and the bottom connecting barrel 100; one end of the pulling rope 730 is wound around and positioned on the top reel 710, and the other end is wound around and positioned on the bottom reel 720, and is located in the space surrounded by the closed tube 200, passes through the multifunctional column and is fixed on the multifunctional column; the reel driving assembly 740 is used to drive the top reel 710 and the bottom reel 720 to operate, and is a motor structure.

[0086] Preferably, in order to reduce costs, one motor can be used to drive the operation of the plurality of top reels 710 and bottom reels 720 through chain transmission or the like.

[0087] Preferably, a power transmission line is tied to or built into the pulling rope 730 .

[0088] Furthermore, a hose placement hole 615 is provided at the top of the column body 610. The hose placement hole 615 is a circular hole with a length of more than 0.7 times the axial length of the column body 610. It is used to accommodate the gas hose 460 when the multifunctional column moves upward; the bottom end of the gas hose 460 is fixed to the inner bottom of the hose placement hole 615.

[0089] Preferably, in order to further disperse the airflow ejected from the ejection port and thus more efficiently complete the cultivation of microalgae, a gas nozzle 616 is fixed to the ejection port; the gas nozzle 616 ejects the gas from the gas pump assembly 620 in an umbrella shape.

[0090] Preferably, in order to more fully stir the algae liquid during the movement of the multifunctional column, thereby increasing the turbulence in the algae liquid and allowing the injected carbon dioxide to be more fully integrated into the algae liquid; a hole-blocking expansion and contraction ring 640 is positioned near the end of the liquid channel hole 614; the hole-blocking expansion and contraction ring 640 is an elastic rubber hollow ring, the outer ring of which is fixed on the inner wall of the liquid channel hole 614, and the internal space is connected to the pump air assembly 620, and expands and contracts under the control of the control unit; during the lifting and lowering movement of the multifunctional column, the two hole-blocking expansion and contraction rings 640 change their own volumes successively or simultaneously, thereby changing the inlet and outlet diameters of the liquid channel hole 614, thereby greatly increasing the turbulence.

[0091] Further, such as Fig. 9 As shown, a rotating block is positioned at the bottom of the multifunctional column, and the rotating block is a cylindrical block, which rotates under the drive of a motor; a horizontal orifice rotating rod 650 is fixed on the side wall of the rotating block; the orifice rotating rod 650 is a hard rod body, which is arranged near the bottom opening of the liquid channel hole 614; during the movement of the multifunctional column, the rotating block rotates to drive the orifice rotating rod 650 to rotate, thereby further increasing the turbulence.

[0092] Preferably, a plurality of iron beads are fixed on the inner ring of the hole plugging expansion and contraction ring 640 near the hole mouth rotating rod 650. The hole mouth rotating rod 650 is a rod body made of a magnetic material. When the hole mouth rotating rod 650 rotates, it drives the hole plugging expansion and contraction ring 640 to deform and further increase the turbulence.

[0093] Preferably, Figure 8As shown, in order to ensure that the nutrients added from the feed port 420 can be more fully and quickly mixed into the culture solution; an extension tube 430 is fixed to the bottom of the feed port 420; a feed through hole 612 and a storage bin 613 are positioned on the column body 610; the extension tube 430 is a hard tube body arranged longitudinally; the diameter of the feed through hole 612 is larger than the diameter of the extension tube 430, and the axial direction is the same as the axial direction of the column body 610; plugging expansion and contraction rings 640 are positioned near both ends of the feed through hole 612; the storage bin 613 is located in the column body 610 and is used for temporarily storing nutrients; the feed through hole 612 is connected to the storage bin 613 and penetrates the storage bin 613; under normal circumstances, the bottom of the feed through hole 612 is sealed by the plugging expansion and contraction ring 640 Closed; when nutrients are about to be injected, first control the multifunctional column to move upward so that the extension tube 430 is inserted into the feed through hole 612, and then control the hole plugging expansion and contraction ring 640 at the bottom of the feed through hole 612 to retract to leave a small hole (with a diameter less than 1 cm) for the discharge of the culture medium; then control the hole plugging expansion and contraction ring 640 at the top of the feed through hole 612 to expand and resist the extension tube 430; thereafter control the top replenishing tube 005 to fill the culture processing unit with nutrients and inject them into the storage bin 613; thereafter control the multifunctional column to move downward, control the hole plugging expansion and contraction ring 640 at the top of the feed through hole 612 to expand and leave a small hole; then control the multifunctional column to move up and down frequently, and during the movement, the nutrients in the feed through hole 612 and the storage bin 613 gradually flow out and quickly mix into the culture medium.

[0094] Preferably, in order to improve the cleaning efficiency of the outer sleeve cleaning ring during expansion and contraction self-cleaning, as Figure 8 As shown, there are three outer sleeve cleaning rings, which are arranged in a row, with the side ring bodies 661 located at the upper and lower ends and the middle ring body 663 located in the middle; the middle ring body 663 is densely covered with two rows of fine holes arranged in a ring shape; the two rows of fine holes are respectively oriented towards the two side ring bodies 661 when the middle ring body 663 is in an expanded state; when the attached microalgae are cleaned normally, only the side ring bodies 661 are expanded to contact the wall of the closed tube 200; when the outer sleeve cleaning ring needs to be cleaned, the side ring bodies 661 are controlled to expand and contract frequently and the middle ring body 663 is controlled to expand and spray airflow to assist the cleaning.

[0095] Preferably, the structure of the lamp cleaning ring 630 on the first through hole 611 is also the same as the structure of the outer sleeve cleaning ring on the column body 610 (both include a side ring body 661 and a middle ring body 663).

[0096] Preferably, all the outer jacket cleaning rings and the lamp cleaning ring 630 are elastic rubber sheets fixed at both ends.

[0097] The power assembly is used to provide power for the operation of various components of the closed microalgae cultivation and processing device for pollutant treatment and carbon fixation in this application, and the control unit plays a role in controlling the coordinated operation of various components of the closed microalgae cultivation and processing device for pollutant treatment and carbon fixation. Both are prior arts and will not be described in detail here.

[0098] Preferably, the control unit is a combination of a programmable logic controller and control buttons.

[0099] When the closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation according to the embodiment of the present application is used; microalgae inoculation is required only when the culture solution (treated polluted water) is injected into the cultivation and treatment unit for the first time, and the microalgae retained in the cultivation and treatment unit can be used for microalgae cultivation in the subsequent cultivation process; after the culture solution is introduced into the cultivation and treatment unit, the multifunctional column is regularly moved up and down to assist in mixing the culture solution; the top pipe group transports carbon dioxide, water and nutrients from the top of the cultivation and treatment unit into the cultivation and treatment unit in a timely and quantitative manner; when it is necessary to clean the microalgae attached to the wall, the outer jacket cleaning ring and the lamp cleaning ring 630 are controlled to expand and then the multifunctional column is controlled to move to achieve the scraping of the microalgae attached to the wall; the lamp cleaning ring 630 and the outer jacket cleaning ring are regularly controlled to expand and contract frequently to shake off the sticking debris.

[0100] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0101] The invention solves the technical problems that the scraping and cleaning force of the microalgae attached to the wall in the closed pipe culture device in the prior art cannot be adjusted due to its own structure, the cleaning effect is poorly stable, the microalgae culture solution after treatment is easily contaminated, and the stirring efficiency of the microalgae is low; the closed microalgae culture and treatment device for pollutant treatment and carbon fixation has the technical effects of adjustable cleaning force for the microalgae attached to the wall, stable cleaning effect, and low contamination during transfer of the microalgae culture solution, and high stirring efficiency for the algae solution. Microalgae culture realizes pollutant treatment and carbon fixation.

[0102] Embodiment 2

[0103] Considering that there are usually particles in the microalgae culture solution (treated polluted water), the side ring body 661 is prone to wear after contacting the particles for a long time, and it is inconvenient to open the culture processing unit to replace and maintain the side ring body 661; therefore, in order to solve the above problem, the embodiment of the present application adds a contact cloth 662 on the basis of the above embodiment to replace the side ring body 661 to contact the tube wall; specifically:

[0104] The abutment cloth 662 corresponds to the side ring body 661 one by one, and is preferably made of cotton cloth in the form of a circular ring sheet. Both ends of the abutment cloth can be detachably fixed on the side wall of the column body 610, and together with the side wall of the column body 610, it surrounds the side ring body 661; when the side ring body 661 expands, the abutment cloth 662 replaces the side ring body 661 to abut against the tube wall.

[0105] like Fig.11 As shown, in order to further reduce the maintenance frequency, there are multiple side ring bodies 661 located on one side of the intermediate ring body 663, all of which are individually connected to the pump air assembly 620; a piece of resistance cloth 662 covers all the side ring bodies 661 on one side of the intermediate ring body 663; when in use, only one side ring body 661 is controlled to expand and resist to support the resistance cloth 662, so that one piece of resistance cloth 662 has multiple annular areas that can adhere to the wall, thereby extending the replacement cycle.

[0106] Embodiment 3

[0107] In order to further extend the service life of the device and reduce the maintenance frequency, the embodiment of the present application optimizes and improves the structure of the column body 610 on the basis of the first embodiment, and adds a resistance cloth 662, an elastic connector 666 and a pulling rod 667; specifically:

[0108] like Fig.12 As shown, the abutment cloth 662 corresponds one-to-one with the side ring body 661, and is preferably made of cotton cloth in the form of a circular ring-shaped sheet, with its two ends respectively positioned on the elastic connector 666 and the pulling rod 667, and together with the side wall of the column body 610, surrounds the side ring body 661; when the side ring body 661 expands, the abutment cloth 662 replaces the side ring body 661 to abut against the tube wall.

[0109] The side wall of the column body 610 is provided with a first annular groove 664 and a second annular groove 665, which are arranged close to the side ring body 661 and are respectively located on both sides of the side ring body 661, and are used to accommodate the elastic connecting body 666 and the pulling rod 667 respectively;

[0110] The elastic connector 666 is an annular elastic sheet, one end of which is fixed to the bottom of the first annular groove 664, and the other end is fixed to one end of the abutting cloth 662, and is always in a stretched state;

[0111] The pulling rod 667 is an electric telescopic rod, which is arranged horizontally, with one end fixed to the bottom of the second annular groove 665, and the other end fixed to the other end of the abutment cloth 662; one abutment cloth 662 corresponds to three or more pulling rods 667; the pulling rods 667 in the same groove are spaced equally from each other and are telescopically synchronized;

[0112] After the abutment cloth 662 has been used for a period of time, the dragging rod 667 is controlled to change its length so as to move the abutment cloth 662 and extend the service life of the abutment cloth 662 .

[0113] like Fig.13 As shown, preferably, the resisting cloth 662 is composed of a plurality of ring-shaped cloths of different materials (polyester, yarn, etc.) spliced ​​together, and the ring-shaped cloths of different materials have different scraping effects on the adherent microalgae; when in use, the resisting tube wall of different materials can be replaced according to needs.

[0114] Preferably, during use, the abutment cloth 662 can be frequently moved when the middle ring body 663 sprays air, thereby obtaining a better cleaning effect on the abutment cloth 662 .

[0115] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A closed microalgae cultivation and processing device for pollutant treatment and carbon fixation, characterized in that: It includes basic inlet and outlet liquid pipes, top pipe group, and culture processing unit; The basic inlet and outlet liquid pipes are arranged horizontally, and there are two of them, which are used to input and output culture liquid to the culture processing unit respectively; the top pipe group is positioned at the top of the culture processing unit, and is used to transport carbon dioxide, water and nutrients into the culture processing unit; The number of the culture processing units is multiple, they are columnar, arranged longitudinally and arranged in a row on the ground, and fixed on the ground by a fixing bracket (006); The culture processing unit has a built-in multifunctional column, a lamp column housing (500) and a column shifting assembly for driving the multifunctional column to move up and down; the lamp column housing (500) is arranged longitudinally and has a built-in lamp column; The multifunctional column is provided with a through hole for the lamp column shell (500) to penetrate, a through hole for the circulation of culture fluid, and a built-in pump air component (620); the side walls of the through hole for the lamp column shell (500) to penetrate and the side walls of the multifunctional column are both provided with elastic rubber hollow rings that are independently connected to the pump air component (620).

2. The closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation according to claim 1, characterized in that: The culture processing unit comprises a bottom connection barrel (100), a sealing tube (200), a top loading tube (300), and an upper sealing cover (400); the bottom connection barrel (100) is a hard barrel body with an opening at the top; The sealing tube (200) is a hard tube made of a transparent material, arranged longitudinally, and its bottom is fixed to the top of the bottom connection barrel (100); The top-loading pipe (300) is a hard pipe body, which plays a connecting role, is arranged longitudinally, and the bottom is fixed to the top of the closed pipe (200); the upper closed cover (400) is a hard plate body, which can be detachably fixed to the top of the top-loading pipe (300) to close the top of the top-loading pipe (300); the upper closed cover (400) is provided with a water inlet (410), a material addition port (420), an exhaust valve (440) and an air inlet (450).

3. The closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation according to claim 1, characterized in that: The multifunctional column is cylindrical in shape as a whole, and comprises a column body (610), a pump gas assembly (620), a lamp cleaning ring (630) and a jacket cleaning ring; The column body (610) is a hard cylinder, arranged longitudinally, and provided with a first through hole (611) for the lamp column housing (500) to pass through, a liquid channel hole (614) for the culture liquid to flow through, and a spray port; The axial direction of the first through hole (611) and the liquid channel hole (614) is the same as the axial direction of the column body (610); The injection port is located at the bottom of the column body (610) and is connected to the pump gas assembly (620); The pump gas assembly (620) is a combination of an air pump, an air valve and an air delivery pipe, and is positioned inside the column body (610), and its gas inlet is connected to the air inlet (450) through a gas delivery hose (460); The lamp cleaning ring (630) is a hollow elastic rubber ring, the outer ring of which is fixed on the inner wall of the first through hole (611), and the inner space of which is connected to the pump air assembly (620); The outer sleeve cleaning ring is an elastic rubber hollow ring, which is sleeved on the outer wall of the column body (610) and the inner ring is fixed on the outer wall of the column body (610). The inner space is connected to the pump air component (620) and expands and contracts under the control of the control unit; The column displacement assembly is a winch structure.

4. The closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation according to claim 3, characterized in that: A hole-blocking expansion and contraction ring (640) is positioned near the end of each of the liquid channel holes (614); The hole-blocking expansion and contraction ring (640) is an elastic rubber hollow ring, the outer ring of which is fixed on the inner wall of the liquid channel hole (614), and the inner space is connected to the pump air component (620), and expands and contracts under the control of the control unit; During the lifting and lowering process of the multifunctional column, the two hole-blocking expansion and contraction rings (640) change their volumes successively or simultaneously, thereby changing the inlet and outlet diameters of the liquid channel hole (614) and greatly increasing the turbulence.

5. The closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation according to claim 4, characterized in that: An extension tube (430) is fixed to the bottom of the feed inlet (420); A material-adding through hole (612) and a material storage bin (613) are positioned on the column body (610); the extension tube (430) is a hard tube body arranged longitudinally; The diameter of the material-adding through hole (612) is larger than the diameter of the extension tube (430), and the axial direction is the same as the axial direction of the column body (610); Hole plugging expansion and contraction rings (640) are positioned near both ends of the feed through hole (612); the storage bin (613) is located inside the column body (610) and is used for temporarily storing nutrients; The material adding through hole (612) is in communication with the material storage bin (613) and penetrates the material storage bin (613).

6. The closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation according to any one of claims 1 to 5, characterized in that: There are three outer sleeve cleaning rings, which are arranged in a row. The side ring bodies (661) are located at the upper and lower ends, and the middle ring body (663) is located in the middle. The middle ring body (663) is densely covered with two rows of fine holes arranged in a ring shape. The two rows of fine holes are respectively oriented toward the two side ring bodies (661) when the middle ring body (663) is in an expanded state. When the attached microalgae are cleaned normally, only the side ring bodies (661) expand and contact the wall of the closed tube (200). When the outer sleeve cleaning ring needs to be cleaned, the side ring bodies (661) are controlled to expand and contract frequently, and the middle ring body (663) is controlled to expand and spray airflow to assist the cleaning process.

7. The closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation according to claim 6, characterized in that: Also included is a resistance cloth (662); The abutment cloth (662) corresponds to the side ring body (661) one by one, and is in the form of a circular ring sheet, and both ends of which can be detachably fixed on the side wall of the column body (610), and together with the side wall of the column body (610), surround the side ring body (661); when the side ring body (661) expands, the abutment cloth (662) replaces the side ring body (661) to abut against the tube wall.

8. The closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation according to claim 6, characterized in that: There are a plurality of side ring bodies (661) located on one side of the middle ring body (663), each of which is individually connected to the pump air assembly (620); a piece of resistance cloth (662) covers all the side ring bodies (661) on one side of the middle ring body (663); when in use, only one side ring body (661) is controlled to expand and resist to support the resistance cloth (662), so that a piece of resistance cloth (662) has multiple annular areas that can adhere to the wall, thereby extending the replacement cycle.

9. The closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation according to claim 6, characterized in that: It also includes a resisting cloth (662), an elastic connecting body (666) and a pulling rod (667); The abutment cloth (662) corresponds to the side ring body (661) one by one, and is in the form of a circular ring sheet, with two ends respectively positioned on the elastic connection body (666) and the pulling rod (667), and together with the side wall of the column body (610), surrounds the side ring body (661); when the side ring body (661) expands, the abutment cloth (662) replaces the side ring body (661) to abut against the tube wall; The side wall of the column body (610) is provided with a first annular groove (664) and a second annular groove (665), which are arranged close to the side ring body (661) and are respectively located on both sides of the side ring body (661), and are respectively used to accommodate the elastic connecting body (666) and the pulling rod (667); The elastic connecting body (666) is an annular elastic sheet, one end of which is fixed to the bottom of the first annular groove (664), and the other end is fixed to one end of the abutting cloth (662), and is always in a stretched state; The pulling rod (667) is an electric telescopic rod, which is arranged horizontally, with one end fixed to the bottom of the second annular groove (665) and the other end fixed to the other end of the abutment cloth (662); one abutment cloth (662) corresponds to three or more pulling rods (667); the pulling rods (667) located in the same groove are spaced equally from each other and are telescopically moved synchronously.

10. The closed microalgae cultivation and treatment device for pollutant treatment and carbon fixation according to claim 9, characterized in that: The abutment cloth (662) is formed by splicing and assembling a plurality of annular cloths of different materials, and the annular cloths of different materials have different scraping effects on the microalgae attached to the wall; when in use, the abutment cloths of different materials can be replaced according to needs.

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