Water purification device based on periphytic bioaugmentation for antibiotic removal from water

Abstract

This invention relates to the field of wastewater treatment technology, specifically to a water purification device based on periclump bio-enhanced removal of antibiotics from water. It includes a swirling channel, a solar-powered PV / T coupled photothermal catalytic module, a periclump bioreactor, and a membrane water separation component. The front end of the swirling channel is connected to an inlet pipe, and the top effluent is connected to the PV / T coupled photothermal catalytic reaction module via a pipe. A set of water passages is located between the solar cell and the flat-plate collector at the bottom of the swirling channel. Wastewater treated by photothermal catalysis enters the periclump bioreactor below through these water passages. The bottom effluent from the periclump bioreactor is discharged after passing through the membrane water separation component. This invention optimizes the photothermal catalytic process and thermal energy conversion efficiency through solar PV / T splitting technology, coupled with micro / nano bubble technology, enhanced periclump biotechnology, and membrane water separation technology, achieving efficient removal of antibiotics and synergistic control of microbial resistance genes, effectively reducing the formation and horizontal migration of resistance genes.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment, specifically relating to a water purification device for enhanced removal of antibiotics from water based on periclump organisms, particularly a water purification device for enhanced removal of antibiotics from rice-shrimp tail water at low temperatures based on the performance enhancement of periclump organisms. Background Technology

[0002] In integrated farming systems, excessive antibiotic use not only threatens the health of aquatic organisms and poses risks to the aquatic ecosystem, but also affects rice production, potentially threatening food security. When antibiotics enter the soil and water environment, they further enhance microbial resistance and accelerate their spread in the environment through horizontal gene transfer of antibiotic resistance genes (ARGs) between different bacterial populations, leading to stronger resistance in organisms and posing potential threats to agricultural aquatic biosafety, ecological health, and water environment safety. Resistance genes are genes that microorganisms acquire resistance to antibiotics through mechanisms such as gene mutation or horizontal gene transfer, and can be passed on to other microorganisms. The spread of these resistance genes can cause previously antibiotic-sensitive microorganisms to acquire resistance, leading to resistant strains and triggering a series of public health problems, threatening public health and the safety of food and drinking water.

[0003] In the past, the treatment of antibiotics in aquaculture has mostly employed a combination of chemical and biological methods, in which cyclohexane (a type of microbial organism) plays a crucial role as a highly efficient microbial regulation technology. Cyclohexane is a natural micro-ecosystem that grows at the water-soil interface, making significant contributions to the enrichment and removal of pollutants and is often regarded as a green, low-carbon, and highly efficient microbial regulation technology. Cyclohexane is a microbial aggregate that arises under specific aquatic environmental conditions. Its community structure is complex, its populations are abundant, its specific surface area is large, and it carries a negative charge. It is mainly dominated by photosynthetic autotrophic organisms, generally appears green, and is widely distributed on the surface of various substrates. Cyclohexane adsorbs antibiotics in concentrated water through its secreted extracellular polymeric substances (EPS), and then degrades the antibiotics through its own metabolism or aerobic reactions, breaking them down into carbon dioxide and water.

[0004] However, in winter or low-temperature environments, the Zhoucong bioreactor exhibits a lower bioreaction rate due to reduced enzyme activity, leading to inefficient or non-functional operation. Existing patent application 202410028107 combines photocatalytic degradation with biodegradation to address the issues of microbial enrichment and energy recycling under low-temperature conditions, but it neglects microbial functional considerations, such as the specificity in antibiotic treatment, particularly focusing on the resistance genes generated by microorganisms during antibiotic degradation and the resulting horizontal migration of these resistance genes. This horizontal migration may cause drawbacks. Therefore, overcoming the drawbacks of horizontal migration of microbial resistance genes and eliminating antibiotics and their resistance genes in the rice-shrimp water cycle system is crucial for the sustainable development of the rice-shrimp co-cultivation system. Effectively mediating and controlling the formation of microbial resistance genes is a prerequisite for enhancing the efficient removal of antibiotics using microbial (Zhoucong) treatment technology.

[0005] If periwinkle directly participates in antibiotic degradation, it can easily lead to the transfer of resistance genes within the periwinkle. Furthermore, the accumulation of recalcitrant antibiotics and toxic byproducts negatively impacts the periwinkle, reducing degradation efficiency. As an aerobic microbial aggregate, traditional aeration methods are not only unfavorable for the enrichment and growth of periwinkle but also consume a significant amount of energy. Summary of the Invention

[0006] Purpose of the invention: To address the problem of low efficiency in treating antibiotics under low-temperature conditions in existing technologies, this invention provides a water purification device based on enhanced performance of cyclohexane (a type of basalt plant) to remove antibiotics from rice-shrimp tail water. This device achieves efficient removal of antibiotics under low-temperature conditions while efficiently utilizing solar energy, thus achieving energy conservation and environmental protection.

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

[0008] A water purification device based on periclump bio-enhanced removal of antibiotics from water includes a vortex channel, a solar-powered PV / T coupled photothermal catalytic module, a periclump bioreactor, and a membrane water separation component. The front end of the vortex channel is connected to an inlet pipe, and the top outlet water is connected to the solar-powered PV / T coupled photothermal catalytic module via a pipe. The periclump bioreactor is located below the solar-powered PV / T coupled photothermal catalytic module. A set of water passage holes is provided at the bottom of the solar-powered PV / T coupled photothermal catalytic module, through which wastewater treated by the solar-powered PV / T coupled photothermal catalytic module enters the periclump bioreactor below. The bottom outlet water of the periclump bioreactor is discharged after passing through the water separation component.

[0009] This invention combines a swirling channel, a solar-powered PV / T coupled photothermal catalytic module, and a periphery bioreactor. The rupture of micro- and nano-bubbles generates hydroxyl radicals, enhancing the photocatalytic process and activating antibiotic molecules. This produces transitional organic substances and small molecule intermediates, providing favorable conditions for periphery bioreactor antibiotic removal and reducing the risk of antibiotic resistance gene migration.

[0010] This invention utilizes a solar photovoltaic-thermal-catalytic linkage system with an internal photocatalyst coating and solar cells. It can divide sunlight into frequencies: visible light is used for photothermal heating and photovoltaic power generation, while ultraviolet light is used for photocatalysis. The photocatalyst is activated by ultraviolet light, catalyzing and activating antibiotic organic molecules, thus enhancing antibiotic bioavailability. A periphyte bioreactor enhances the enrichment capacity of periphyte organisms for activated antibiotic molecules. Simultaneously, secondary metabolites of periphyte organisms, such as reactive oxygen species (ROS), undergo further free radical coupling reactions with magnetic iron-based materials and activated antibiotic molecules. Based on a biochemical free radical chain reaction, activated antibiotics are treated, effectively reducing the formation and horizontal migration of resistance genes. A polymer membrane module, through physical interception and membrane chemical interface reactions, further removes antibiotics and their derivatives, while simultaneously intercepting periphyte organisms, preventing the loss of bacteria and algae from the periphyte.

[0011] Specifically, the swirling channel uses a polyurethane hydrocyclone with an inlet on the upper side, an overflow outlet at the top, and a sludge discharge outlet at the bottom. The inlet is connected to the inlet pipe at the front end, and an inlet pump is installed on the inlet pipe. The overflow outlet is connected to the solar-powered PV / T coupled photothermal catalytic module through a pipe. The high-speed centrifugal action of the swirling channel removes solid particles from the water and generates micro-nano bubbles.

[0012] In this invention, the swirling channel removes solid particles through high-speed centrifugation as water flows through, simultaneously generating micro- and nano-bubbles. When these bubbles burst, they release energy and generate a large number of hydroxyl radicals, enhancing the photocatalytic process, activating antibiotic molecules, and producing transitional organic substances and small molecule intermediates. This provides favorable conditions for antibiotic removal by *Zygophyllum commune*. The good solubility of the micro- and nano-bubbles maintains a certain dissolved oxygen concentration in the water, providing sufficient oxygen for *Zygophyllum commune*.

[0013] Specifically, the periclump bioreactor includes an insulated tank and a set of belt drive mechanisms disposed within the insulated tank. The belt drive mechanisms employ transparent belt attachment plates, on the surface of which periclump biofilms are formed. Driven by the belt drive mechanisms, the periclump biofilm moves along with the belt attachment plates, thereby driving the biofilm carrier with attached periclump biofilms to rotate in the water and achieve full contact with the water. All six sides of the insulated tank are covered by an insulation layer to maintain the tank temperature.

[0014] Furthermore, each of the belt drive mechanisms is equipped with a light source at its center, and the light generated by the light source can shine through the transparent belt attachment plate onto the peripheral biofilm.

[0015] Furthermore, each belt drive mechanism is connected to the others via a track, and the motor of the belt drive mechanism is connected to the solar-powered PV / T coupled photothermal catalytic module circuit. The electrical energy generated by the solar-powered PV / T coupled photothermal catalytic module provides power to the motor of the belt drive mechanism.

[0016] Specifically, the solar-powered frequency-splitting PV / T coupled photothermal catalytic module is a box-shaped structure located above the Zhoucong bioreactor. The solar-powered frequency-splitting PV / T coupled photothermal catalytic module includes a photocatalyst coating, heating wires, a flat-plate collector, and solar cells. The photocatalyst coating is uniformly applied to the top inner surface of the solar-powered frequency-splitting PV / T coupled photothermal catalytic module box. The flat-plate collector and solar cells are sequentially and alternately arranged at the bottom of the solar-powered frequency-splitting PV / T coupled photothermal catalytic module box, with the two arranged in an alternating pattern without obstructing each other, and water passage holes are provided within them. The heating wires are disposed inside the solar-powered frequency-splitting PV / T coupled photothermal catalytic module box and are powered by the solar cells.

[0017] In this invention, visible and near-infrared light are stored and converted by a flat-plate solar collector, while the water is heated. Ultraviolet light, under the action of a photocatalyst, excites electrons, activating the photocatalyst and generating a simultaneous photothermal catalytic reaction at the catalyst interface. Simultaneously, it undergoes an interfacial multiphase reaction with magnetic iron-based compounds, further activating antibiotic molecules. The catalytically activated antibiotics then interact with functionally enhanced peritrichous organisms through a chemobiological process. These functionally enhanced peritrichous organisms utilize novel gene-editing bioengineering techniques to strengthen their photosynthetic capacity, enhance carbon capture, increase the production of extracellular polymeric substances (EPS) and reactive oxygen species (ROS), thereby strengthening their growth activity and the production of secondary metabolites, ultimately activating antibiotics through ROS-induced activation. The magnetic material helps to enhance dipole interactions in the local microenvironment, inducing Fenton-like reactions and further enhancing the degradation of pollutants by the peritrichous organisms.

[0018] Furthermore, the photocatalyst coating is composed of graphene, titanium dioxide, and magnetic Fe3O4 in a mass ratio of approximately 1:(15~25):(1.0~1.5).

[0019] Furthermore, the solar cells are embedded in the bottom of the solar-powered PV / T coupled photothermal catalytic module housing, with each cell electrically connected and immersed in water. They convert light energy into electrical energy through the photoelectric effect for storage and power the electrical equipment in the water purification device.

[0020] Specifically, the water separation component includes an external discharge pipe, a polymer separation membrane, a water quality sensor, and a circulating water pipe; the external discharge pipe is connected to the outlet of the Zhoucong bioreactor, and the polymer separation membrane is disposed at the outlet of the Zhoucong bioreactor; one end of the circulating water pipe is connected to the external discharge pipe, and the other end is connected to the solar-powered PV / T coupled photothermal catalytic module; the water quality sensor is located at the inlet of the external discharge pipe; an outlet valve is provided at the outlet of the external discharge pipe; a check valve and a circulating water pump are provided at the inlet of the circulating water pipe to control substandard wastewater to be reintroduced into the solar-powered PV / T coupled photothermal catalytic module for further reaction.

[0021] Furthermore, the bottom of the insulated box is equipped with a sludge plate for regularly cleaning the sludge that settles at the bottom of the box. Beneficial effects

[0022] (1) This invention integrates a swirling channel, composite nanophotothermal catalysis technology, and enhanced peri-bacterial biological function, aiming to improve the processing efficiency and accuracy under low-temperature conditions. By combining PVT to efficiently utilize and convert solar energy, the visible and ultraviolet light regions are divided and utilized through the spectral splitting effect of nano-semiconductor materials. The large number of hydroxyl radicals generated when micro-nano bubbles break and the ultraviolet-excited graphene@titanium dioxide@magnetic Fe3O4 composite material are used to enhance the photocatalytic process. Through the functionally enhanced peri-bacterial biological water purification reactor, the efficient removal of antibiotics under low-temperature conditions is achieved, while the solar energy is efficiently utilized, achieving the purpose of energy saving and environmental protection.

[0023] (2) The present invention combines a solar photovoltaic-thermal system with a periphery biological reaction zone to transfer a large amount of heat energy generated during photothermal-photovoltaic conversion to the water body. This solves the problems of the increasing surface temperature of flat plate collectors and solar cells due to heat generation, which leads to a decrease in photothermal-photovoltaic conversion efficiency; and the problems of low biological activity and low treatment efficiency of periphery organisms in low-temperature environments. This water purification device can overcome the challenges of low-temperature environments without external energy input, effectively utilize solar energy, and activate antibiotic molecules through chemical-biological coupling and linkage regulation based on the chemical transition state theory. It then degrades antibiotics and their derivatives through enhanced periphery organisms, and achieves risk regulation of microorganisms based on process control, mediating the formation of microbial resistance genes and achieving efficient removal of antibiotics from rice-shrimp tail water.

[0024] (3) This invention combines a swirling channel, solar photovoltaic photothermal energy, photocatalytic degradation, and a periphyll bioreactor. The rupture of micro-nano bubbles generates hydroxyl radicals, enhancing the photocatalytic process and activating antibiotic molecules, producing transitional organic matter and small molecule intermediates. This provides favorable conditions for periphyll bioreactors to remove antibiotics and reduces the risk of antibiotic resistance gene migration. By setting a swirling channel at the front end of the device, the excellent water solubility of micro-nano bubbles provides oxygen for periphyll bioreactor growth, avoiding the negative impact of direct aeration on periphyll bioreactor enrichment. The central light source of the conveying device can uniformly irradiate the attachment plate at 360°, solving the problem of uneven light irradiation and avoiding damage to periphyll bioreactors from ultraviolet rays in sunlight, thus promoting the growth and uniform enrichment of the periphyll biofilm.

[0025] (4) The graphene@titanium dioxide@magnetic Fe3O4 composite photothermal catalytic material of this invention improves the utilization rate of solar energy and photocatalytic efficiency. Especially under low temperature conditions, this material can absorb solar energy more effectively and improve the photothermal and photoelectric conversion efficiency. At the same time, the hydroxyl radicals generated when the micro-nano bubbles break further enhance the photocatalytic process, directly acting on antibiotics and helping to catalytically activate organic molecules, further generating transitional organic substances and small molecule intermediates. The metabolites EPS and secondary metabolites ROS of Cynomorium spp. react with activated antibiotic molecules through a free radical chain reaction, further degrading intermediate organic substances and small molecule antibiotic derivatives. In this process, active small molecules can be absorbed, enriched, or even biodegraded by Cynomorium spp., providing nutrients to Cynomorium spp. while reducing the risk of horizontal transfer of resistance genes.

[0026] (5) The device of this invention takes into account both environmental friendliness and energy efficiency. It makes full use of micro-nano bubble oxygen supply and free radical generation, ultraviolet photocatalysis, photothermal coordination of nano-photothermal catalytic materials, and gene editing-enhanced Zhoucong biotechnology, providing a multi-technology linkage mechanism aimed at strengthening chemical free radical linkage. It fully complements the advantages of each component, not only effectively removing antibiotics and reducing the risk of horizontal transfer of Zhoucong biotechnology resistance genes, but also significantly improving the overall degradation efficiency of the reactor. At the same time, both photocatalytic degradation and biodegradation are environmentally friendly treatment methods. The entire device does not require external energy and can achieve harmless and efficient treatment of antibiotic wastewater. Attached Figure Description

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention as described above or otherwise will become clearer.

[0028] Figure 1 This is a schematic diagram of the overall structure of the water purification device of the present invention.

[0029] Figure 2 This is a schematic diagram of the vortex-type channel in the water purification device of the present invention.

[0030] Figure 3 This is a top view schematic diagram of the battery and collector in the solar-powered PV / T coupled photothermal catalytic module of the present invention.

[0031] Figure 4 This is a schematic diagram of the transmission device in the Zhou Cong bioreactor of the present invention.

[0032] Figure 5 This is a schematic diagram of the membrane water separation component in the Zhou Cong bioreactor of the present invention.

[0033] Figure 6 This is a flowchart illustrating the wastewater treatment process of the water purification device of the present invention.

[0034] The reference numerals in the attached drawings represent: 1-inlet pipe, 2-inlet pump, 3-vortex channel, 4-photocatalyst coating, 5-heating wire, 6-flat plate collector, 7-solar cell, 8-belt drive device, 9-track, 10-light source, 11-belt attachment plate, 12-insulation box, 13-sludge plate, 14-polymer separation membrane, 15-water quality sensor, 16-external discharge pipe, 17-circulating water pump, 18-check valve, 19-outlet valve, 20-circulating water pipe, 21-inlet, 22-overflow port, 23-sludge discharge port. Detailed Implementation

[0035] The present invention can be better understood from the following embodiments.

[0036] Combination Figure 1 As shown, this invention relates to a water purification device for enhanced removal of antibiotics from water based on cyclone bioreactors, comprising a vortex channel 3, a solar-powered PV / T coupled photothermal catalytic module, a cyclone bioreactor, and a water separation component. The front end of the vortex channel 3 is connected to an inlet pipe 1, and the top outlet water is connected to the solar-powered PV / T coupled photothermal catalytic module through a pipe. The cyclone bioreactor is located below the solar-powered PV / T coupled photothermal catalytic module, and a set of water passage holes are provided at the bottom of the solar-powered PV / T coupled photothermal catalytic module. Wastewater treated by the solar-powered PV / T coupled photothermal catalytic module enters the cyclone bioreactor below through the water passage holes. The bottom outlet water of the cyclone bioreactor is discharged after passing through the water separation component.

[0037] By combining a swirling channel, solar photovoltaic photothermal technology, photocatalytic degradation, and a periphery bioreactor, the photocatalytic process is enhanced by the generation of hydroxyl radicals through the rupture of micro-nano bubbles. This activates antibiotic molecules, producing transitional organic substances and small molecule intermediates, providing favorable conditions for periphery bioreactor removal of antibiotics and reducing the risk of antibiotic resistance gene migration.

[0038] The solar photovoltaic-photothermal-catalytic linkage system incorporates a photocatalyst coating and solar cells. It can divide sunlight into frequencies: visible light is used for photothermal heating and photovoltaic power generation, while ultraviolet light is used for photocatalysis. The photocatalyst is activated by ultraviolet light, catalyzing and activating antibiotic organic molecules, thus enhancing antibiotic bioavailability. A periphyte bioreactor enhances the enrichment capacity of periphyte organisms for activated antibiotic molecules. Simultaneously, the secondary metabolites of periphyte organisms, such as reactive oxygen species (ROS), undergo further free radical coupling reactions with magnetic iron-based materials and activated antibiotic molecules. Based on a biochemical free radical chain reaction, the activated antibiotics are treated, effectively reducing the formation and horizontal migration of resistance genes. A polymer membrane module, through physical interception and membrane chemical interface reactions, further removes antibiotics and their derivatives, while simultaneously intercepting periphyte organisms, preventing the loss of bacteria and algae from the periphyte.

[0039] Combination Figure 2 In some embodiments, the swirling channel 3 is a polyurethane hydrocyclone with an inlet 21 on its upper side, an overflow port 22 on its top, and a sludge discharge port 23 at its bottom. The inlet 21 is connected to the inlet pipe 1 at the front end, and an inlet pump 2 is installed on the inlet pipe 1. The overflow port 22 is connected to the solar-powered PV / T coupled photothermal catalytic module through a pipe. The high-speed centrifugal action of the swirling channel 3 is used to remove solid particles from the water and generate micro-nano bubbles at the same time.

[0040] In this invention, the swirling channel removes solid particles through high-speed centrifugation as water flows through, simultaneously generating micro- and nano-bubbles. When these bubbles burst, they release energy and generate a large number of hydroxyl radicals, enhancing the photocatalytic process, activating antibiotic molecules, and producing transitional organic substances and small molecule intermediates. This provides favorable conditions for antibiotic removal by *Zygophyllum commune*. The good solubility of the micro- and nano-bubbles maintains a certain dissolved oxygen concentration in the water, providing sufficient oxygen for *Zygophyllum commune*.

[0041] Combination Figure 1In some embodiments, the periclump bioreactor includes an insulated tank 12 and a set of belt drive mechanisms 8 disposed within the insulated tank 12. The belt drive mechanism 8 uses a transparent belt attachment plate 11, the surface of which is covered with a periclump biofilm. The belt drive mechanism 8 drives the periclump biofilm to move along with the belt attachment plate 11, thereby driving the biofilm carrier with attached periclump biofilm to rotate in the water and make full contact with the water. All six sides of the insulated tank 12 are covered by an insulation layer to maintain the tank temperature.

[0042] In some embodiments, each of the belt drive mechanisms 8 is provided with a light source 10 at its center, and the light generated by the light source 10 can pass through the transparent belt attachment plate 11 and irradiate the periphery biofilm.

[0043] Combination Figure 4 In some embodiments, the belt drive mechanisms 8 are sequentially driven by the track 9, and the motor of the belt drive mechanism 8 is connected to the circuit of the solar PV / T coupled photothermal catalytic module. The electrical energy generated by the solar PV / T coupled photothermal catalytic module provides power to the motor of the belt drive mechanism 8.

[0044] Combination Figure 3 In some embodiments, the solar-powered PV / T coupled photothermal catalytic module is a box-shaped structure located above the Zhoucong bioreactor. The solar-powered PV / T coupled photothermal catalytic module includes a photocatalyst coating 4, a heating wire 5, a flat-plate collector 6, and a solar cell 7. The photocatalyst coating 4 is uniformly coated on the top inner surface of the solar-powered PV / T coupled photothermal catalytic module box. The flat-plate collector 6 and the solar cell 7 are sequentially and alternately arranged at the bottom of the solar-powered PV / T coupled photothermal catalytic module box, with the two arranged in an alternating pattern without obstructing each other, and water passage holes are provided within them. The heating wire 5 is disposed inside the solar-powered PV / T coupled photothermal catalytic module box and is powered by the solar cell 7.

[0045] In this invention, visible and near-infrared light are stored and converted by a flat-plate solar collector, while the water is heated. Ultraviolet light, under the action of a photocatalyst, excites electrons, activating the photocatalyst and generating a simultaneous photothermal catalytic reaction at the catalyst interface. Simultaneously, it undergoes an interfacial multiphase reaction with magnetic iron-based compounds, further activating antibiotic molecules. The catalytically activated antibiotics then interact with functionally enhanced peritrichous organisms through a chemobiological process. These functionally enhanced peritrichous organisms utilize novel gene-editing bioengineering techniques to strengthen their photosynthetic capacity, enhance carbon capture, increase the production of extracellular polymeric substances (EPS) and reactive oxygen species (ROS), thereby strengthening their growth activity and the production of secondary metabolites, ultimately activating antibiotics through ROS-induced activation. The magnetic material helps to enhance dipole interactions in the local microenvironment, inducing Fenton-like reactions and further enhancing the degradation of pollutants by the peritrichous organisms.

[0046] In some embodiments, the photocatalyst coating 4 is composed of graphene, titanium dioxide, and magnetic Fe3O4 in a mass ratio of approximately 1:(15~25):(1.0~1.5).

[0047] In some embodiments, the solar cell 7 is embedded in the bottom of the solar PV / T coupled photothermal catalytic module housing, with each cell electrically connected and immersed in water. It converts light energy into electrical energy through the photoelectric effect for storage and supplies power to the electrical equipment in the water purification device.

[0048] In some embodiments, the water separation assembly includes an external discharge pipe 16, a polymer separation membrane 14, a water quality sensor 15, and a circulating water pipe 20; the external discharge pipe 16 is connected to the outlet of the circulatory bioreactor, and the polymer separation membrane 14 is disposed at the outlet of the circulatory bioreactor; one end of the circulating water pipe 20 is connected to the external discharge pipe 16, and the other end is connected to the solar-powered PV / T coupled photothermal catalytic module; the water quality sensor 15 is located at the inlet of the external discharge pipe 16; an outlet valve 19 is disposed at the outlet of the external discharge pipe 16; a check valve 18 and a circulating water pump 17 are disposed at the inlet of the circulating water pipe 20 to control substandard wastewater to be reintroduced into the solar-powered PV / T coupled photothermal catalytic module for further reaction.

[0049] Combination Figure 5 The polymer separation membrane 14 of the present invention comprises a three-layer membrane structure, namely polytetrafluoroethylene, polyamide and polyurethane, with molecular weight cutoffs of approximately 10,000, 5,000 and 10,000 Da, respectively.

[0050] In some embodiments, the bottom of the insulated box 12 is provided with a sludge plate 13 for regularly cleaning the sludge deposited at the bottom of the box.

[0051] Combination Figure 6 The process for removing antibiotics from rice-shrimp tail water according to this invention is as follows:

[0052] Continuous water flows through inlet pipe 1 and enters cyclone channel 3 (polyurethane FX-250 hydrocyclone) through inlet 21 under the action of inlet pump 2. Under high-speed centrifugal force, energy is released through local bubble rupture. More than 90% of solid pollutants are removed from the water within cyclone channel 3, aeration is achieved, and a certain dissolved oxygen concentration is maintained.

[0053] Wastewater discharged from the swirl channel 3 enters the solar-powered PV / T coupled photothermal catalytic module through the overflow port 22. A photocatalyst coating 4 is arranged above the photocatalytic reactor. Organic wastewater containing antibiotics is initially decomposed under photocatalysis. The reaction zone of the solar-powered PV / T coupled photothermal catalytic module has a volume of approximately 0.5 m³. 90% of the ultraviolet light in sunlight is absorbed by the photocatalyst, the majority of infrared light is absorbed and converted by the flat plate collector 6, and visible light is used for the spectral response of the solar cell 7. During this process, the photocatalyst coating 4 excites photoelectrons to generate current and undergoes a photocatalytic reaction, degrading pollutants. The flat plate collector 6 absorbs and converts solar energy to heat the water to approximately 25°C. The flow of the water carries away heat, promoting efficient heat transfer. The solar cell 7 powers other electrical equipment in the water purification device, including heating wires 5, a transmission device 8 in the periphery bioreactor, and a light source 10. Due to the increased water temperature, the polluted water reaches the optimal growth temperature of the periphery bioreactor (around 25°C), maximizing the efficiency of the periphery bioreactor.

[0054] By arranging water passages between the solar cell 7 and the flat plate collector 6, the periphytes attached to the belt drive device 8 in the periphyte bioreactor can be prevented from being washed away due to the large flow rate and high velocity. Therefore, the water flow through the evenly arranged water passages reduces the water velocity, minimizing the impact on the periphytes, while ensuring the water falls evenly into the tank, maximizing contact with the periphytes. To ensure effective removal of pollutants in the 0.5 m³ bioreactor, the water pump flow rate is controlled, and the initial hydraulic retention time is set at two days.

[0055] A water quality sensor 15 (AMT-W400 multi-parameter water quality sensor, capable of simultaneously measuring dissolved oxygen, pH, turbidity, ammonia nitrogen, COD, conductivity, and liquid level) is installed at the outlet of the Zhou Cong bioreactor and electrically connected to the inlet pump 2. When the water level in the tank is higher than the maximum water level of the water quality sensor 15, the inlet pump 2 stops working; when the treated water flows out and the water level in the tank is lower than the set minimum water level, the inlet pump 2 starts working and pumps water into the vortex channel 3. At the same time, the water quality sensor 15 can also measure the temperature inside the tank. When the temperature is below 20℃ and it is nighttime, when solar heating of the water is not possible, the solar cell 7 provides power, and the heating wire 5 assists in raising the water temperature.

[0056] Four belt drive devices 8 are installed in the water tank, arranged in pairs and connected by a track 9. Each belt drive device 8 is driven clockwise by an internal motor and contains two light sources 10 with a light intensity of approximately 4000 lux, providing illumination for the growth of the attached periphytes. The belt drive device 8 uses a transparent belt attachment plate 11 for attaching the periphytes, which are arranged on the plate and rotate clockwise with the device. This rotation allows the periphytes to have as much contact with the receiving water in the tank as possible, thus improving water purification capacity. A polymer separation membrane 14 is installed between the outlet of the periphyte bioreactor and the inlet of the discharge pipe 16 for filtration. Wastewater passes through the membrane 14 and enters the discharge pipe 16. The outlet of the discharge pipe 16 discharges wastewater to the outside through an outlet valve 19. The water purification device also includes a circulating water pipe 20, one end of which is connected to an external discharge pipe 16 via a check valve 18, with the connection point located downstream of the polymer separation membrane 14. The other end is connected to a solar-powered PV / T coupled photothermal catalytic module. The device also includes a water quality sensor 15, located at the outlet of the polymer separation membrane 14. During operation, the water quality sensor 15 performs the following functions:

[0057] 1. When the water quality sensor 15 detects that the water quality meets the requirements (e.g., NH3-N≤ 5.0 mg / L, DO≥2 mg / L, turbidity≤10NTU, etc.), the outlet valve 19 opens, the check valve 18 closes, the inlet pump 2 continues to work, the inlet flow rate is the same as the outlet flow rate, and the whole is in a balanced state.

[0058] 2. When the water quality sensor 15 detects that the water quality does not meet the requirements, the outlet valve 19 closes, the check valve 18 opens, and the circulating water pump 17 operates. Wastewater flows back through the circulating water pipe 20 to the solar-powered PV / T coupled photothermal catalytic module for re-reaction. When the water level in the tank is higher than the set maximum level (exceeding the top of the inlet pipe), the inlet pipe 1 valve closes, and the inlet pump 2 stops operating, resulting in a closed-loop water circulation within the tank. When the water quality meets the standards, the outlet valve 19 opens, the check valve 18 closes, and the circulating water pump 17 stops. Water flows out, and when the water level in the tank falls below the set minimum level (not submerging the entire transmission device), the inlet valve 1 opens, and the inlet pump 2 starts, continuing operation.

[0059] This invention provides a concept and method for a water purification device based on periwinkle-enhanced removal of antibiotics from water. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A water purification device based on periwinkle-enhanced removal of antibiotics from water, characterized in that, The system includes a swirling channel (3), a solar-powered PV / T coupled photothermal catalytic module, a periphery bioreactor, and a membrane water separation component. The front end of the swirling channel (3) is connected to the inlet pipe (1), and the top outlet water is connected to the solar-powered PV / T coupled photothermal catalytic module through a pipe. The periphery bioreactor is located below the solar-powered PV / T coupled photothermal catalytic module. The bottom of the solar-powered PV / T coupled photothermal catalytic module is provided with a set of water passage holes. Wastewater treated by the solar-powered PV / T coupled photothermal catalytic module enters the periphery bioreactor below through the water passage holes. The bottom outlet water of the periphery bioreactor is discharged after passing through the membrane water separation component. The periphery bioreactor includes an insulated box (12) and a set of belt drive mechanisms (8) disposed in the insulated box (12). The belt drive mechanism (8) adopts a transparent belt attachment plate (11). A periphery biofilm is formed on the surface of the transparent belt attachment plate (11), and the periphery biofilm is driven by the belt drive mechanism (8) to move together with the belt attachment plate (11). Each of the belt drive mechanisms (8) is provided with a light source (10) at its center. The light generated by the light source (10) can pass through the transparent belt attachment plate (11) and irradiate the periphery biofilm. The swirling channel (3) is a polyurethane hydrocyclone with an inlet (21) on its upper side, an overflow port (22) on its top, and a sludge discharge port (23) at its bottom. The inlet (21) is connected to the inlet pipe (1) at the front end, and an inlet pump (2) is installed on the inlet pipe (1). The overflow port (22) is connected to the solar PV / T coupled photothermal catalytic module through a pipe. The high-speed centrifugal effect of the swirling channel (3) is used to remove solid particles in the water and generate micro-nano bubbles at the same time. The solar-powered PV / T coupled photothermal catalytic module is a box-shaped structure located above the Zhou Cong bioreactor. The solar-powered PV / T coupled photothermal catalytic module includes a photocatalyst coating (4), a heating wire (5), a flat plate collector (6), and a solar cell (7). The photocatalyst coating (4) is uniformly coated on the top inner surface of the solar-powered PV / T coupled photothermal catalytic module box. The flat plate collector (6) and the solar cell (7) are arranged alternately at the bottom of the solar-powered PV / T coupled photothermal catalytic module box, with the two arranged in an alternating manner, without obstructing each other, and with water passage holes. The heating wire (5) is located inside the solar-powered PV / T coupled photothermal catalytic module box and is powered by the solar cell (7).

2. The water purification device for antibiotic removal from water based on periwinkle bio-enhanced methods according to claim 1, characterized in that, Each belt drive mechanism (8) is driven sequentially by a track (9), and the motor of the belt drive mechanism (8) is connected to the circuit of the solar PV / T coupled photothermal catalytic module. The electrical energy generated by the solar PV / T coupled photothermal catalytic module provides power to the motor of the belt drive mechanism (8).

3. The water purification device for antibiotic removal from water based on periwinkle bio-enhanced methods according to claim 1, characterized in that, The photocatalyst coating (4) is composed of graphene, titanium dioxide and magnetic Fe3O4 in a mass ratio of 1:(15~25):(1.0~1.5).

4. The water purification device for antibiotic removal from water based on periwinkle bio-enhanced methods according to claim 1, characterized in that, The solar cell (7) is embedded in the bottom of the solar PV / T coupled photothermal catalytic module box, and the cells are electrically connected. It is immersed in water and converts light energy into electrical energy through photoelectric effect for storage, and supplies power to the electrical equipment in the water purification device.

5. The water purification device for antibiotic removal from water based on periwinkle bio-enhanced methods according to claim 1, characterized in that, The water separation assembly includes an external discharge pipe (16), a polymer separation membrane (14), a water quality sensor (15), and a circulating water pipe (20); the external discharge pipe (16) is connected to the outlet of the Zhoucong bioreactor, and the polymer separation membrane (14) is located at the outlet of the Zhoucong bioreactor; one end of the circulating water pipe (20) is connected to the external discharge pipe (16), and the other end is connected to the solar PV / T coupled photothermal catalytic module; the water quality sensor (15) is located at the inlet of the external discharge pipe (16); an outlet valve (19) is provided at the outlet of the external discharge pipe (16); a check valve (18) and a circulating water pump (17) are provided at the inlet of the circulating water pipe (20).

6. The water purification device for antibiotic removal from water based on periwinkle bio-enhanced methods according to claim 1, characterized in that, The bottom of the insulated box (12) is provided with a sludge plate (13).

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