An algae-bacteria symbiotic overflow weir-type water purification device

Abstract

The algae-fungus symbiotic overflow weir type water purification device provided by the application comprises a symbiotic barrel for culturing algae-fungus symbiotic bodies and performing preliminary water purification by using the algae-fungus symbiotic bodies obtained through cultivation; a first circulating barrel for performing secondary purification on the water purified preliminarily; and a second circulating barrel for performing final purification on the water purified secondarily, wherein the symbiotic barrel and the second circulating barrel are both provided with a water outlet with a triangular overflow weir structure; the device can form a multiple purification mode of biological purification combined with hydraulic mixing and physical interception of microalgae, microorganisms and algae-fungus symbiosis, the removal efficiency of pollutants in the water is doubled, and the operation cost is further reduced.

Description

Technical Field

[0001] This invention belongs to the field of algae-bacteria symbiotic water purification technology, specifically relating to an algae-bacteria symbiotic overflow weir-type water purification device. Background Technology

[0002] Currently, excessive levels of nitrogen and phosphorus in lakes and reservoirs easily induce rapid phytoplankton growth, leading to eutrophication and damaging the aquatic ecosystem. This seriously threatens the growth of aquatic organisms and the safe use of water resources. Conventional treatment methods, such as physicochemical methods, are generally used to treat water bodies of varying sizes, including lakes, reservoirs, and rivers. While these methods can bring water quality up to standard, they only address the symptoms, not the root cause, and are insufficient for maintaining good water quality in the long term. Furthermore, the addition of chemicals may cause secondary pollution.

[0003] Currently, water pollution treatment primarily relies on aeration technology. This increases dissolved oxygen levels, promoting the decomposition of organic matter by aquatic microorganisms and thus improving water purification. Mechanical agitation is also widely used, effectively disrupting the formation of a pollutant diffusion layer, ensuring uniform distribution, and improving oxygen mass transfer and microbial purification efficiency. However, these methods suffer from drawbacks: high energy consumption leading to high treatment costs, which is not conducive to long-term water body maintenance and purification. Furthermore, they exhibit low utilization rates of microbial resources and low efficiency in purifying inorganic substances such as nitrogen and phosphorus. Therefore, developing a highly efficient, green, and sustainable water pollution treatment technology and equipment is urgently needed.

[0004] Natural water bodies contain abundant microalgae resources, which are green, single-celled organisms capable of photosynthesis and are highly effective at purifying inorganic pollutants, primarily nitrogen and phosphorus, from water. Furthermore, some indigenous microorganisms exhibit remarkable purification effects in water pollution control; without human intervention, it is difficult to achieve the self-purification requirements of water bodies. How to utilize the combined advantages of microalgae and microorganisms to achieve efficient water purification has become a current research hotspot. Algae-microbe co-culture technology holds promise for enabling the two types of organisms to achieve symbiosis and thus efficiently promote the rapid removal of pollutants from water bodies. However, promoting the efficient proliferation of target microalgae in polluted water bodies is the main challenge hindering the successful symbiotic relationship between them and aquatic microorganisms. Summary of the Invention

[0005] The purpose of this invention is to provide an algae-bacteria symbiotic overflow weir-type water purification device, which solves the shortcomings of existing water purification methods, such as poor effect and high cost.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] The present invention provides an algae-bacteria symbiotic overflow weir-type water purification device, comprising:

[0008] A symbiotic tank used for cultivating algae-bacteria symbiotics and for preliminary water purification using the cultivated algae-bacteria symbiotics;

[0009] The first circulation tank is used for secondary purification of water that has undergone preliminary purification.

[0010] The second circulation tank is used for the final purification of the water after secondary purification.

[0011] The symbiotic tank and the second circulation tank are both equipped with outlets with triangular overflow weir structures.

[0012] Preferably, the symbiotic tank is a cylindrical structure with one end sealed and the other end open. The open end of the symbiotic tank is the water outlet, and the bottom of the inner cavity of the symbiotic tank is provided with a water inlet. A one-way water inlet valve is installed at the water inlet. Micro-nano aeration components are evenly distributed at the bottom of the inner cavity of the symbiotic tank. A light component is provided on the upper outer wall of the symbiotic tank along its circumference.

[0013] Preferably, the micro-nano aeration component includes an aeration pump and micro-nano aeration heads, wherein multiple micro-nano aeration heads are provided, and the multiple micro-nano aeration heads are evenly distributed at the bottom of the inner cavity of the symbiotic tank; the air inlets of the multiple micro-nano aeration heads are connected to the aeration pump.

[0014] Preferably, the symbiotic tank is provided with an overflow component for driving water overflow.

[0015] Preferably, the overflow assembly includes a hydraulic telescopic assembly, a piston disc, and a vent pipe. The hydraulic telescopic assembly is installed at the outlet of the symbiotic tank, and its output end is fixed at the center of the piston disc. The piston disc is slidably installed in the inner cavity of the symbiotic tank. The vent pipe is fixed on the outer wall of the symbiotic tank, with its outlet located in the inner cavity of the symbiotic tank and below the piston disc. The inlet of the vent pipe is connected to the atmosphere.

[0016] Preferably, the piston disc has multiple openings evenly distributed on it, and a one-way check valve is installed at each opening.

[0017] Preferably, the first circulation tank is a closed cavity, and the upper end of the first circulation tank is provided with an inlet that communicates with the outlet of the symbiotic tank; multiple guide plates are provided in the inner cavity of the first circulation tank, and the multiple guide plates are arranged alternately to form an S-shaped flow channel; and an outlet is provided at the bottom of the first circulation tank.

[0018] Preferably, a water inlet grille is provided at the water inlet of the first circulation tank.

[0019] Preferably, the second circulation tank is a cylindrical structure with one end closed and the other end open, with an inlet at the bottom and an outlet at the open end.

[0020] Preferably, the symbiotic tank is also equipped with a scraping assembly for removing algal residue.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This invention provides an algae-bacterial symbiotic overflow weir-type water purification device. Microalgae, which readily co-cultivate with microorganisms in the target water area, are placed in a symbiotic tank and co-cultivated with the water in the tank to form an algae-bacterial symbiosis. This symbiotic symbiosis is used for initial water purification, followed by preliminary interception of pollutants using a triangular overflow weir at its outlet. A first circulation tank then performs secondary purification on the purified water, and finally, a triangular overflow weir at the outlet of a second circulation tank further intercepts and purifies floating particulate matter, resulting in compliant water. This device can form a multi-stage purification mode that integrates biological purification, hydraulic mixing, and physical interception, combining microalgae, microorganisms, and algae-bacterial symbiosis. This doubles the efficiency of pollutant removal from the water while further reducing operating costs.

[0023] Furthermore, the water purified by the symbiotic tank overflows into the inlet grille at the top of the first circulation tank through the overflow drop channel. Under the action of the guide plate inside the first circulation tank, the water flows from the top of the circulation tank, passes through the baffle, and then flows out downwards. The entire process of purifying the water is relatively long, which is conducive to the aggregation of small particulate matter in the water to achieve further purification.

[0024] Furthermore, the water inside the symbiotic tank overflows outward through the triangular overflow weir along the outer edge of the tank to purify the water quality. Algae, bacteria, and other floating matter gather near the triangular weir. The algae and bacteria are removed and collected by the mechanical scraping component in a circular motion. The collected algae and bacteria symbiont can be used as a water purifier for continued use, or it can be used for biomass resource conversion.

[0025] Furthermore, the micro-nano aeration system is adjusted by water quality detection feedback to release microbubbles into the symbiotic tank to achieve rapid collection of algae and bacteria symbionts. Then, the hydraulic telescopic component is used to push the mixed water in the symbiotic tank upward. During the contraction of the hydraulic telescopic component, the one-way check valve on the piston disc closes and moves upward to ensure a good interception effect in the overflow. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the purification device of the present invention;

[0027] Figure 2 This is a front view of the purification device;

[0028] Figure 3 This is a top view of the purification device;

[0029] In the diagram: 1-Symbiotic tank, 2-First circulation tank, 3-Second circulation tank, 3-1-Inlet grille, 4-Outlet, 5-Detection probe device, 5-1-Second water quality detection probe, 5-2-First water quality detection probe, 5-3-Bottom chlorophyll fluorescence probe, 5-4-Top chlorophyll fluorescence probe, 6-Firming scraper, 6-1-Pump, 7-Hydraulic telescopic assembly, 7-1-One-way check valve, 8-Micro-nano aeration head, 8-1-Aeration pump, 9-One-way inlet valve, 10-Ventilation pipe, 11-Lighting assembly, 12-Solar power supply assembly, 13-Fixed anchor, 14-Thruster, 15-Guide plate, 16-Outlet hole, 17-Control unit. Detailed Implementation

[0030] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0031] Before operation, information on the microorganisms in the water to be treated was collected, and microalgae that were easily co-cultured were selected for testing, demonstrating a high feasibility in promoting and forming an algae-bacterial symbiosis. Utilizing the special features of this device, such as the micro-nano aeration device, suitable light ratio, triangular overflow weir, and guide plates, the device efficiently promotes rapid growth of microalgae and enables co-culture with microorganisms in the water. Simultaneously, it significantly improves the collection of excess scum from algae and bacteria and enhances water purification. During operation, this device forms a multi-stage purification mode combining biological purification with hydraulic mixing and physical interception, integrating microalgae, microorganisms, and algae-bacterial symbiosis, doubling the removal efficiency of pollutants in the water. The addition of solar charging further reduces operating costs. Simultaneously, microalgae biomass can be recovered for various resource utilizations. The algae-bacterial mixture produced in this process can be used as raw material for the symbiosis for recycling, further achieving the goal of green and sustainable water purification.

[0032] Example 1

[0033] like Figure 1 The algae-bacteria symbiotic overflow weir-type water purification device provided in this embodiment mainly includes a symbiotic tank 1, a first circulation tank 2, and a second circulation tank 3, wherein:

[0034] A symbiotic tank used for cultivating algae-bacteria symbiotics and for preliminary water purification using the cultivated algae-bacteria symbiotics;

[0035] The first circulation tank is used for secondary purification of water that has undergone preliminary purification.

[0036] The second circulation tank is used for the final purification of the water after secondary purification.

[0037] The symbiotic tank and the second circulation tank are both equipped with outlets with triangular overflow weir structures.

[0038] Example 2

[0039] Based on Example 1, this example provides an algae-bacteria symbiotic overflow weir-type water purification device, wherein the first circulation tank 2 is placed in the inner cavity of the second circulation tank 3, and the symbiotic tank 1 is placed in the inner cavity of the first circulation tank 2; the first circulation tank 2, the second circulation tank 3 and the symbiotic tank 1 are arranged coaxially.

[0040] Example 3

[0041] Based on Example 1, this example provides an algae-bacteria symbiotic overflow weir-type water purification device, wherein the symbiotic tank 1 is a cylindrical structure with one end sealed and the other end open; the open end of the symbiotic tank is the water outlet 4.

[0042] The symbiotic tank has two symmetrically arranged water inlets at the bottom of its inner cavity, and each water inlet is equipped with a one-way water inlet valve.

[0043] The bottom of the inner cavity of the symbiotic tank is evenly distributed with micro-nano aeration components; a lighting component is arranged along the circumference of the upper outer wall of the symbiotic tank.

[0044] Example 4

[0045] Based on Example 3, this example provides an algae-bacteria symbiotic overflow weir-type water purification device. The micro-nano aeration component includes an aeration pump and micro-nano aeration heads. Multiple micro-nano aeration heads are provided and are evenly distributed at the bottom of the inner cavity of the symbiotic tank. The air inlets of the multiple micro-nano aeration heads are connected to the aeration pump.

[0046] Example 5

[0047] Based on Example 1, this example provides an algae-bacteria symbiotic overflow weir-type water purification device, wherein the symbiotic tank is equipped with an overflow component for driving water overflow.

[0048] The overflow assembly includes a hydraulic telescopic assembly 7, a piston disc, and a vent pipe 10, wherein:

[0049] The symbiotic barrel is also equipped with a bracket at its open end, and a hydraulic telescopic component 7 is mounted on the bracket. The output end of the hydraulic telescopic component 7 is fixed on the piston disc.

[0050] The piston disc is installed in the inner cavity of the symbiotic barrel 1 and is slidably connected to the inner wall of the symbiotic barrel 1.

[0051] A vent pipe 10 is also installed on the outer wall of the symbiotic barrel 1. The vent outlet of the vent pipe 10 is located in the inner cavity of the symbiotic barrel 1 and below the piston disc.

[0052] The piston disc has multiple openings, and a one-way check valve 7-1 is installed at each opening.

[0053] Example 6

[0054] Based on Example 1, this example provides an algae-bacteria symbiotic overflow weir-type water purification device, wherein the symbiotic tank 1 is also equipped with an algae scraping component.

[0055] The algae scraping assembly includes a slag scraper and an algae slag collection tank, wherein:

[0056] The slag scraper includes a fixed slag scraper 6 and a movable slag scraper, wherein the fixed slag scraper and the movable slag scraper are hinged together.

[0057] A pump 6-1 is installed on the fixed slag scraper, with the pump's inlet located at the outlet of the symbiotic tank and the pump's outlet located inside the algae slag collection tank.

[0058] Example 7

[0059] Based on Example 1, this example provides an algae-bacteria symbiotic overflow weir-type water purification device. The first circulation tank is a closed cavity, and the upper end of the first circulation tank is provided with an inlet that communicates with the outlet of the symbiotic tank. An inlet grille is provided at the inlet.

[0060] The first circulation tank has multiple guide plates inside its cavity, which are arranged alternately to form an S-shaped flow channel; the bottom of the first circulation tank has a water outlet.

[0061] Example 8

[0062] Based on Example 1, this example provides an algae-bacteria symbiotic overflow weir-type water purification device. The second circulation tank is a cylindrical structure with one end closed and the other end open. The bottom of the second circulation tank is provided with a water inlet, and the open end of the second circulation tank is a water outlet.

[0063] Example 9

[0064] Based on Example 1, this example provides an algae-bacteria symbiotic overflow weir-type water purification device, which further includes:

[0065] A data acquisition unit used to collect water quality and chlorophyll data of the target water body;

[0066] A control unit that uses collected water quality and chlorophyll data to control the micro-nano aeration components, overflow components, and sludge scraping components.

[0067] Example 10

[0068] Based on Example 9, this example provides an algae-bacteria symbiotic overflow weir-type water purification device. The data acquisition unit includes two water quality detection probes and two chlorophyll fluorescence probes, wherein:

[0069] The two water quality detection probes are the first water quality detection probe 5-2 installed on the top of the inner wall of the symbiotic tank and the second water quality detection probe 5-1 installed on the bottom of the outer side of the symbiotic tank.

[0070] Both chlorophyll fluorescence probes are arranged in the inner cavity of the symbiotic barrel, and are positioned above and below the piston plate, respectively, namely the bottom chlorophyll fluorescence probe 5-3 and the top chlorophyll fluorescence probe 5-4.

[0071] Example 11

[0072] Based on Example 9, this example provides an algae-bacteria symbiotic overflow weir-type water purification device, which also includes a solar power supply component 12. The power output terminal of the solar power supply component 12 is connected to the control unit, the micro-nano aeration component, the sludge scraping component, and the lighting component, respectively.

[0073] Example 13

[0074] Based on Example 1, this example provides an algae-bacteria symbiotic overflow weir-type water purification device, wherein the bottom of the second circulation tank is also provided with multiple evenly distributed propellers 14.

[0075] Example 14

[0076] Based on Example 1, this example provides an algae-bacteria symbiotic overflow weir-type water purification device, wherein a fixed anchor 13 is also provided at the bottom of the second circulation tank.

[0077] Example 15

[0078] like Figures 1 to 3 As shown, the method of using an algae-bacteria symbiotic overflow weir-type water purification device provided in this embodiment includes the following steps:

[0079] Initial stage:

[0080] The piston disc is placed at the bottom of the symbiotic barrel cavity and above the vent outlet of the vent pipe;

[0081] The included angle between the movable scraper and the fixed scraper is 0°.

[0082] Purification phase:

[0083] Place the purification device in the target water area; replenish water into the symbiotic tank through the inlet, and control the opening and closing of the one-way inlet valve using the first water quality detection probe.

[0084] Select microalgae that can easily coexist with microorganisms in the target water body;

[0085] After setting the parameters corresponding to the micro-nano aeration components and the lighting components, the microalgae and the target water body are co-cultured in the symbiotic tank for a certain period of time to obtain the algae-bacteria symbiosis.

[0086] At night or in the absence of light, the micro-nano aeration components will perform intermittent aeration, once every 3 hours, for 5 seconds each time, with a total aeration volume of 3L. This mainly involves disturbing and providing dissolved oxygen to promote the rapid growth of algae and bacteria.

[0087] During the day or under sunlight, the micro-nano aeration components will perform intermittent aeration, once every 3 hours, with an aeration duration of 1 second and an aeration volume of 0.6L. The main function is to disturb and promote the mixing of algae, bacteria and water.

[0088] When the water quality meets the standards, the aeration pump will be activated to continuously aerate and lift the water.

[0089] The water in the symbiotic tank is purified using an algae-bacteria symbiotic system, and the water quality in the symbiotic tank is monitored in real time using the first water quality detection probe 5-2.

[0090] Once the water quality in the symbiotic tank meets the standards, the control unit controls the aeration pump to release micro-bubbles into the symbiotic tank using micro-nano aeration heads. The micro-bubbles pass through the one-way check valve on the piston plate, which plays a role in the rapid air flotation and upward movement of the algae and bacteria symbiotic organism.

[0091] Chlorophyll fluorescence probe 5-4 placed on top of the symbiotic tank was used to detect chlorophyll at the water outlet in real time.

[0092] When the detected chlorophyll reaches the set value, the hydraulic telescopic component drives the piston disc to move upward, while the air pipe inflates the bottom of the symbiotic barrel to eliminate the negative pressure.

[0093] As the piston disc rises, it pulls the water and algae-bacteria symbiont upwards together. The algae-bacteria symbiont in the symbiont tank concentrates near the water surface at the outlet of the symbiont tank, while the water overflows from the triangular overflow weir outlet, and the algae-bacteria symbiont is intercepted. When the piston disc reaches the set height, it stops moving (in this embodiment, the set height of the piston disc is 10cm from the outlet of the symbiont tank). At this time, the movable scraper moves along the water surface, reducing the angle between the movable scraper and the fixed scraper, in order to collect the algae-bacteria symbiont at the outlet. Then, the pump is used to collect the algae-bacteria symbiont into the algae residue collection tank.

[0094] The pump stops working once the detected chlorophyll level reaches the set value.

[0095] The hydraulic telescopic assembly is activated to move downwards. At the same time, the one-way water inlet valve at the bottom of the symbiotic tank is opened. The incoming water can be fully mixed with the remaining liquid through the one-way check valve on the piston plate to carry out the next stage of water purification. At this time, the previously collected algae and bacteria symbiotic body is mixed with the water to be tested to continue purification.

[0096] Due to the action of the hydraulic telescopic components and piston disc, the water in the symbiotic tank overflows from the outlet, while the algae-bacteria symbiotic organism is intercepted by the triangular overflow weir.

[0097] The overflowing water enters the first circulation tank, while the algae and bacteria symbiotic organisms or other impurities that overflow with the water are intercepted again by the inlet grille.

[0098] Because of the guide plate installed in the first circulation tank, the water flow channel in the first circulation tank has an S-shaped structure. This flow channel enhances hydraulic mixing, improves the aggregation of large particles, and thus further purifies the water.

[0099] Then, the water enters the second circulation tank through the bottom outlet. Because the outlet of the second circulation tank is equipped with a triangular overflow weir, the water undergoes final purification.

[0100] After purification:

[0101] The water quality is detected using a second outer water quality probe until the water quality of the current target water area meets the standards. After that, the purification device is moved to a water area with higher levels of pollutants for further purification.

[0102] In this device, ensuring stable operation is achieved primarily through its dimensional design: a large base diameter and a relatively small height, resulting in a lower center of gravity. Secondly, a constant volume of liquid remains at the bottom of the device during operation, further enhancing stability. Additionally, a fixed anchor at the center of the bottom provides additional weight, significantly improving stability. During purification, this anchor remains anchored to the bottom of the water, minimizing disturbance and ensuring normal operation.

[0103] In this embodiment, the symbiotic tank is 1.5m high and 1.2m in diameter; the first circulation tank is 1.2m high and 1.5m in diameter; the second circulation tank is 1m high and 1.8m in diameter. The walls of the three tanks are all 20mm thick and are made of organic transparent glass.

[0104] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. An algae-bacteria symbiotic overflow weir type water body purification device, characterized in that, The application relates to a symbiotic barrel for cultivating algal-bacterial symbiont and carrying out preliminary water purification by using the cultivated algal-bacterial symbiont. The application relates to a first circulating barrel for carrying out secondary purification on the preliminarily purified water. The application relates to a second circulating barrel for carrying out final purification on the secondarily purified water. The application relates to a water outlet provided with a triangular overflow weir structure on the symbiotic barrel and the second circulating barrel. The application relates to an overflow assembly for driving water overflow on the symbiotic barrel. The overflow assembly comprises a hydraulic telescopic assembly, a piston disc and an air pipe, wherein the hydraulic telescopic assembly is installed at the water outlet of the symbiotic barrel, the output end of the hydraulic telescopic assembly is fixed at the center position of the piston disc, the piston disc is slidingly installed in the inner cavity of the symbiotic barrel, the air pipe is fixed on the outer wall of the symbiotic barrel, the water outlet of the air pipe is arranged in the inner cavity of the symbiotic barrel and below the piston disc, and the water inlet of the air pipe is communicated with the atmosphere. The piston disc is uniformly provided with a plurality of openings, and a one-way check valve is arranged at each opening. The symbiotic barrel is a barrel structure with one end sealed and one end opened, the opened end of the symbiotic barrel is the water outlet, the inner cavity bottom of the symbiotic barrel is provided with a water inlet, a one-way water inlet valve is arranged at the water inlet, the inner cavity bottom of the symbiotic barrel is uniformly provided with a micro-nano aeration assembly, and a light assembly is arranged on the upper outer wall of the symbiotic barrel along the circumferential direction.

2. The algal-bacterial symbiosis overflow weir type water body purification device according to claim 1, characterized in that, The micro-nano aeration assembly comprises an aeration pump and a plurality of micro-nano aeration heads, the micro-nano aeration heads are uniformly arranged at the inner cavity bottom of the symbiotic barrel, and the air inlets of the micro-nano aeration heads are connected with the aeration pump.

3. The algal-microbial symbiosis overflow weir type water body purification device according to claim 2, characterized in that, The first circulating barrel is a closed cavity, the upper end of the first circulating barrel is provided with a water inlet communicated with the water outlet of the symbiotic barrel, a plurality of guide plates are arranged in the inner cavity of the first circulating barrel, the plurality of guide plates are alternately arranged to form an S-shaped flow channel, and the bottom of the first circulating barrel is provided with a water outlet.

4. The algal-microbial symbiosis overflow weir type water body purification device according to claim 1, characterized in that, A water inlet grille is arranged at the water inlet of the first circulating barrel.

5. The algal-microbial symbiosis overflow weir type water body purification device according to claim 4, characterized in that, The second circulating barrel is a barrel structure with one end sealed and one end opened, the bottom of the second circulating barrel is provided with a water inlet, and the opened end of the second circulating barrel is the water outlet.

6. The algal-microbial symbiosis overflow weir type water body purification device according to claim 1, characterized in that, The symbiotic barrel is further provided with a slag removing assembly for removing algal residue.

7. The algal-microbial symbiosis overflow weir type water body purification device according to claim 1, characterized in that, ​

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