69 results about "Aquatic environment" patented technology

This invention specifically relates to a biomimetic underwater robot body perception and autonomous obstacle avoidance method based on dual-path 1D-CNN, comprising: measuring the deformation data of the structure during water movement using digital image correlation equipment; deploying multiple flexible sensors in an array in areas of significant deformation to accurately acquire deformation signals; a central control unit monitoring the sensor signals in real time and performing collision detection using a lightweight dual-path 1D-CNN algorithm; when a collision signal is detected, the central control unit automatically issues control commands, which are converted into motor output parameters by a central pattern generator to change the robot's motion posture, enabling autonomous obstacle avoidance. This invention achieves real-time motion monitoring and highly robust, low-latency autonomous obstacle avoidance for biomimetic underwater robots in complex aquatic environments, providing an effective self-protection mechanism and improving its swimming safety and intelligence level.

This invention belongs to the field of SERS detection technology and relates to the application of an Ag / Bi4O5Br2 / Ni-Fe double hydroxide composite SERS substrate in the detection of CV in wastewater. First, a Bi4O5Br2 / Ni-Fe double hydroxide is prepared, and silver nanoparticles are loaded onto its surface using a liquid-phase chemical reduction method. This material combines the LSPR effect of silver nanoparticles with the interfacial coupling and multiple active sites of the Ni-Fe double hydroxide, enabling the regulation of interfacial charge transfer and enhancing molecular adsorption. Utilizing the excellent adsorption and enrichment properties of Bi4O5Br2, a highly efficient charge transport system is synergistically constructed from multiple components, improving the SERS chemical enhancement effect and amplifying the CV Raman signal. This invention overcomes the shortcomings of weak signals and insufficient stability of single substrates, achieving sensitive detection of trace CV in water. The substrate preparation process is simple, environmentally friendly, and highly practical, showing broad application prospects in the field of trace CV analysis in aquatic environments.

This invention provides a cobalt-based metal nitride nanozyme, its preparation method, and its applications. The cobalt-based metal nitride nanozyme provided by this invention is a cobalt-based nitride nanozyme Co4N-600 with a Co-N coordination structure. Experiments have shown that the nanozyme provided by this invention, when used as a catalyst in a PMS system for degrading organic matter, exhibits a high degradation rate and low toxicity of the degradation products, demonstrating great potential for application in complex aquatic environments. Furthermore, the nanozyme provided by this invention exhibits good stability and reproducibility, showing broad application prospects.

An integrated intelligent equipment for processing hairtail. It comprises a rack, a feeding port, an inclined filter screen, a self-adaptive clamping and conveying module, a belly-splitting and internal organs removing module, a fixed-length cutting module, a cold-chain temporary storage module and a controller. The integrated intelligent equipment for processing hairtail has the following beneficial effects: the belly-splitting and internal organs removing module uses a reference for double cutters in the same station, after the belly-splitting cutter splits the belly, the internal organs removing cutter effectively opens the incision and completely scrapes off the internal organs, and the qualified rate of the finished product reaches more than 98%, solving the problem of internal organs residue in the industry. The self-adaptive clamping and conveying module adopts a pure mechanical structure combined with a limiting block and a compression spring, which is a special self-adaptive solution with low cost, high reliability, and is suitable for the characteristics of long and easy deformation of hairtail, avoiding the instability and high cost of the vision system in the humid and complex aquatic environment, and having stronger practicality.

This invention discloses a method for the simultaneous preparation of micronized and stabilized zero-valent iron (ZVFe) based on ball milling with terephthalic acid, belonging to the field of groundwater pollution remediation materials. The method includes the following steps: 1) incorporating terephthalic acid into micron-sized ZVFe powder and mechanically ball milling it; 2) cleaning the material with a solvent and drying it to obtain micronized and stabilized ZVFe reducing material. This invention simultaneously achieves the micronization and stabilization of ZVFe. This method enhances the reducing activity, internal surface hydrophobicity, and electron selectivity of ZVFe materials, improves their reducing performance and electron selectivity for pollutants such as halogenated hydrocarbons and heavy metals, effectively inhibits the oxidative deactivation of ZVFe materials in the aquatic environment and the hydrogen evolution side reaction with water, enabling ZVFe materials to maintain high reducing activity stably in water for a long period. This invention solves the technical problems of poor stability and difficult storage of micronized ZVFe materials in water, which is beneficial for reducing material replacement frequency and resource consumption.

This invention relates to a biological-ecological synergistic purification system for road runoff pollutants in municipal roads, belonging to the field of municipal road rainwater treatment technology. With the acceleration of urbanization, the pollution of natural water bodies by road runoff pollutants is becoming increasingly serious. This biological-ecological synergistic purification system uses a bar screen to intercept large particles and sludge, a biofilm reactor to degrade pollutants using a combined packing layer, an ecological filter to further purify the water using multi-layered filter media and plants, and an ultraviolet disinfection device to kill pathogens. Finally, the purified water is discharged into natural water bodies. It is mainly used to effectively purify road runoff pollutants in municipal roads and protect the natural aquatic environment.

A modular adjustable fixing device for an underwater acoustic transducer array includes a main support rod, a central structural component, a transducer fixing ring, and a sliding connector. One end of the main support rod is fixedly connected to the interior of the central structural component through three sets of square holes. The other end extends to form a Y-shaped array frame. The extended end of the main support rod is used to fix the transducer fixing ring, which is fixed to the main support rod by the sliding connector and suspended from the rear side of the central structural component. The sliding connector is slidably fitted onto the main support rod and positioned by fasteners, with its end connected to the transducer fixing ring. The central transducer fixing ring is fixed to the top of the central structural component. This invention allows for flexible adjustment of the baseline length of the underwater acoustic transducer array by adjusting the position of the sliding connector, meeting the acoustic testing requirements of different array models. Furthermore, its modular design facilitates easy disassembly and is suitable for stable fixing of transducer arrays in complex aquatic environments.

This invention belongs to the field of microbial technology and discloses a strain of *Citrobacter freundii* bacteriophage PRF337, its bacteriophage composition, and its applications. The *Citrobacter freundii* bacteriophage PRF337 was deposited on May 26, 2025, at the China General Microbiological Culture Collection Center (CGMCC), located at No. 3, Courtyard 1, Beichen West Road, Chaoyang District, Beijing, with accession number CGMCC No. 46489. The bacteriophage PRF337 exhibits broad-spectrum bactericidal activity against *Citrobacter freundii*, capable of lysing *Citrobacter freundii* strains containing different virulence genes and from different sources. It also possesses certain temperature and pH stability and can be used as an active ingredient in pharmaceutical preparations, environmental disinfectants, and water purifiers. It can effectively control *Citrobacter freundii* infection in aquatic animals such as fish and shrimp in aquaculture environments and can also be used for the purification of pathogens in aquatic environments. It is safe to use and effectively avoids the problems of antibiotic residues and pathogen resistance caused by antibiotic use.

This invention proposes a protective device and method for preventing the spread of pollutants in aquatic ecological environments, belonging to the field of ecological protection. The method includes the following steps: a water diversion channel is set up on one side of a river channel; anchor points are set up on the riverbank on the same side of the water diversion channel; a guide fluid is connected to the anchor points and allowed to float freely on the river surface; when the guide fluid is inclined at an acute angle relative to the river's flow direction, its end is anchored; the guide fluid is used to change the river's flow trajectory, causing floating debris in the water to bypass the water diversion channel. This invention uses a floating guide fluid placed obliquely on the bank, utilizing fluid dynamics principles to change the surface water flow trajectory, lifting floating debris from the inlet area of ​​the river flow rather than forcefully intercepting it. This results in minimal occupation of the river's cross-sectional area by the guide fluid, with the resulting water level rise only on the millimeter level, having almost no impact on upstream flood discharge and the water diversion capacity of the sluice gate, achieving the effect of diverting flow without obstructing water.

This utility model discloses a novel shaftless pump-driven river algae experimental device, relating to the field of aquatic ecological simulation and early warning prediction technology. It includes an experimental water tank, a propulsion pump, and vortex-generating impellers. The experimental water tank has a ring-shaped structure, with a filling space at the bottom for filling with substrate and a water passage at the top. The propulsion pump is installed inside the experimental water tank to circulate the water within the passage. Multiple vortex-generating impellers are installed inside the experimental water tank to generate vortices in the water within the passage. This device can effectively simulate the hydrodynamics and aquatic environment of a real river in a closed loop, and is compatible with river ecological physics simulations based on water level differences. It offers advantages such as realistic simulation environment, minimal bubble turbulence, low background noise, and long-term algal survival friendliness, making it particularly suitable for experimental research on algae simulation, regulation, and early warning prediction.

This invention relates to the field of image recognition and discloses a method and system for monitoring aquatic environments based on image recognition. The method includes: data normalization of a multi-source image dataset to obtain a standardized image data sequence; feature deconstruction of the standardized image data sequence to obtain multi-scale feature data, and semantic category mapping to obtain environmental element identification result data; dynamic evolution analysis of the environmental element identification result data to obtain element-level spatiotemporal evolution trajectory data; network construction of the element-level spatiotemporal evolution trajectory data to obtain dynamic relationship graph data, and anomaly topology extraction of the dynamic relationship graph data to obtain environmental evolution feature data; dynamic risk assessment of the environmental evolution feature data to obtain comprehensive assessment data; and structured encapsulation of the comprehensive assessment data to obtain a comprehensive monitoring report. This invention can improve the monitoring efficiency of an image recognition-based aquatic environment monitoring method.

This invention discloses a multifunctional self-inflating live fish preservation and emergency rescue storage bag, belonging to the fields of daily storage, aquatic product transportation, and public safety emergency technology. Addressing industry pain points such as the limited functionality of existing equipment, the inability to readily carry rescue gear, the lack of lightweight drowning prevention equipment in primary and secondary schools, the reliance of traditional live fish bags on external devices, insufficient disclosure of technical solutions, and the lack of quantitative performance support, this invention employs a built-in negative pressure self-inflating capsule combined with a one-way pressure regulating valve and a roll-up buckle sealing structure. It defines complete material parameters, negative pressure parameters, pressure stabilization threshold, and buoyancy performance parameters, achieving integrated switching between three cross-domain functions: daily waterproof storage, long-term oxygen-preserving transportation of live fish without equipment, and emergency buoyancy rescue in aquatic environments. Actual testing shows that this invention improves inflation efficiency by over 85%, increases live fish survival time by 200%, reduces leakage rate to 0%, and provides stable buoyancy support for self-rescue by teenagers. This invention breaks through the functional and scenario limitations of existing technologies. The solution is complete, mass-producible, and reproducible. It can be carried by the general public, especially primary and secondary school students, on a regular basis. After its popularization, it can significantly reduce the risk of drowning accidents. It is in line with the policy orientation of campus drowning prevention and safety. It has significant industrial innovation value and social public safety value. It is highly creative, extremely practical, and has broad prospects for promotion.

This invention belongs to the field of water treatment technology, specifically relating to a trithiocyanate-coupled graphene oxide composite material, its preparation method, and its application. To more efficiently and selectively separate and enrich copper ions in wastewater, this invention provides a trithiocyanate-coupled graphene oxide composite material, obtained by covalently coupling trithiocyanate and graphene oxide through a nucleophilic substitution reaction. This composite material exhibits excellent adsorption and removal efficiency for copper ions in complex aqueous systems with both single and multiple components, while showing minimal adsorption of other metal ions such as gallium, silver, indium, cobalt, and neodymium. Furthermore, after multiple adsorption-desorption cycle tests, the composite material maintains a high metal ion removal rate, demonstrating excellent structural stability and regeneration performance. Therefore, this composite material holds promise for the selective separation and enrichment of copper ions in complex aquatic environments, possessing excellent prospects for industrial application.

A system for detecting electrical current in water includes a controller board and at least one sensor board communicatively coupled thereto. The controller may include a microcontroller configured to process signals, a display to show status information, at least one light-emitting diode to generate visual alerts, a siren for audible alerts, at least one button for user input, and a communication module to transmit data to a remote server. Each sensor board may include a tetrahedral electrode assembly configured for submersion in water to measure electrical current in three-dimensional space, a sensor microcontroller for processing measurements and generating wake-up signals, and galvanic isolation circuitry. A power management system may manage power from grid, solar, and battery sources, and a cable system may provide power and communication between the controller and sensor board.

This invention discloses a low-altitude remote sensing multi-dimensional visual analysis and intelligent decision-making platform for complex aquatic environments. It includes a visualization platform system, an inspection system, an AI detection system, a plant protection system, and a water quality management system. The visualization platform system serves as the data interaction hub, responsible for data visualization, data management, and data storage. The inspection system is equipped with drones and various sensor devices to achieve all-weather patrols of the water area. The AI ​​detection system analyzes the collected data using a deep learning model, providing auxiliary decision-making and yield prediction. The plant protection system utilizes drone technology to perform pest and disease control, fertilization, and pollination operations. This low-altitude remote sensing multi-dimensional visual analysis and intelligent decision-making platform for complex aquatic environments, with its visualization platform system, inspection system, AI detection system, plant protection system, and water quality management system, covers the entire process of inspection, monitoring, decision-making, plant protection, and harvesting, reducing manpower input and lowering unit area costs.

This invention relates to the field of razor clam aquaculture technology and discloses an air flotation sorting device for juvenile razor clam shells. The device includes a sorting box, which is a rectangular box structure with an open top. Side limiting plates are fixedly installed on the inner walls of the left and right sides of the sorting box. A layered screening mechanism is movably installed inside the sorting box corresponding to the inner side of the side limiting plates. The highest point of the side limiting plates is flush with the highest point of the layered screening mechanism after installation. In this invention, the sorting box stores water, and the entire sorting process for juvenile razor clam shells is completed in an aquatic environment, eliminating the problem of dehydration damage. This design aligns with the aquatic survival characteristics of juvenile razor clam shells, significantly improving the survival rate of sorted juvenile razor clam shells. It solves the problems of traditional sorting methods that result in detachment from the water and low survival rates. The device uses microporous ceramic aeration plates to generate fine and uniform microbubbles, which gently agitate the water, creating a gentle flow without hard impacts. This is suitable for thin-shelled juvenile razor clam shells, reducing the breakage rate of juvenile razor clam shells from the source.

This invention discloses a detachable hydroponic leek cultivation device for turtle ponds, belonging to the field of hydroponic devices. It includes several freely detachable and combinable floating boards, with detachable protective plates installed on the outer sides of the floating boards. The floating boards can be disassembled and reassembled, offering flexible use. The detachable protective plates at the outer edges of the floating boards prevent turtles from climbing in and eating the leeks. The leeks can absorb high levels of nitrogen, phosphorus, and other nutrients from the turtle farming water, removing eutrophic substances. The leek roots release oxalic acid and other organic acids, sulfides, and flavonoids, inhibiting pathogenic microorganisms in the aquatic environment and reducing the incidence of turtle diseases. This invention can not only be used for hydroponic leeks but also for cultivating other suitable hydroponic medicinal herbs and vegetables, and can be reused repeatedly.

The present application relates to the technical field of new energy comprehensive utilization, in particular to a geothermal photovoltaic hybrid power generation system for water environment, which comprises a floating platform, a support plate arranged above the floating platform, a support frame arranged on the support plate, and a photovoltaic panel installed on the support frame; a maintenance cabin is arranged below the floating platform, a maintenance opening is formed on one side of the maintenance cabin, and an openable maintenance cover is arranged at the maintenance opening; a sealing ring is arranged between the maintenance cover and the maintenance opening; a guide rail is arranged inside the maintenance cabin, a coil pipe frame is arranged in the maintenance cabin and can be pulled and moved along the guide rail, and heat exchange coil pipes are arranged on the coil pipe frame; a second mounting plate is arranged on the other side of the maintenance cabin, a joint pipe is arranged on the second mounting plate, and the joint pipe is communicated with a water supply pipe and a return water pipe; the water supply pipe and the return water pipe are used for being communicated with a geothermal heat exchange loop; and a flushing interface is arranged on the maintenance cabin and communicated with the inside of the maintenance cabin.

A method for preventing metal corrosion in water systems is provided, which minimizes the use of phosphorus compounds or metal salt compounds that contribute to eutrophication or water toxicity, thus reducing their impact on the aquatic environment, and is applicable to a wide range of water qualities. This invention provides a method for preventing metal corrosion in water systems using: a copolymer of (meth)acrylic acid monomer and a sulfonic acid-containing monomer, and an organic acid compound with an organic acid corrosion resistance index of 4 or higher.

An autonomous underwater device includes one or more receiver arrays. Each receiver array includes a plurality of receiver elements, and each receiver element is configured to generate a signal responsive to detecting sound energy in an aquatic environment. The autonomous underwater device also includes one or more processors coupled to the one or more receiver arrays and configured to receive signals from the receiver elements, to generate input data based on the received signals, and to provide the input data to an on-board machine learning model to generate model output data. The model output data includes sonar image data based on the sound energy, a label associated with the sonar image data, or both.

A method, computer program product, and computer system for assessing carbon sequestration contribution of a nature-based asset located in a water environment are provided. The method includes obtaining a meta descriptor of the nature-based asset and a meta descriptor of a region of the water environment in which the asset is located; mapping a size of the nature-based asset; accessing data of a monitored physical property of the asset in the water environment based on the meta descriptor of the asset; accessing data of a monitored carbon concentration in the region of the water environment based on the meta descriptor of the region; accessing data of monitored physical, chemical, and biological properties of the water environment based on the meta descriptor of the region; and applying a model to the accessed data to assign a carbon sequestration contribution per unit of measurement of the nature-based asset.

This invention discloses a hydrogel-modified membrane and its preparation method. The preparation method of the hydrogel-modified membrane is as follows: under light-protected inert atmosphere, tert-butylaminoethyl methacrylate, vinylpyridine, and a photoinitiator are added to water and mixed to obtain a premixed solution. The premixed solution is then irradiated with low-intensity ultraviolet light to obtain a grafting modification solution. A polypropylene microporous membrane is then immersed in the grafting modification solution and irradiated with high-intensity ultraviolet light before the membrane is removed. The modified polypropylene microporous membrane is then washed with an organic solvent and water to obtain the hydrogel-modified membrane. This invention effectively solves the problem of easy degradation of tert-butylaminoethyl methacrylate in water after ultraviolet irradiation by utilizing a prepolymerization reaction, making tert-butylaminoethyl methacrylate applicable to the preparation of hydrophilic gel layers. The modified polypropylene microporous membrane prepared by this invention has high water flux and a small water contact angle, significantly improving the hydrophilicity of the polypropylene microporous membrane and expanding the application range of polypropylene membrane materials in aquatic environments.

System and method for estimating aquatic environment-originating biofilm biomass on a coating of an object. The method includes obtaining one or more digital images of a fouled portion of the coating on the object and determining from each of the one or more images a respective reflectance value for the portion of the coating. The method includes determining on the basis of the one or more reflectance values a value of a spectral index representative of biomass and calculating a biomass pigment surface area density on the basis of the spectral index, SI, and one or more calibration values determined for a reference coating. The method includes compensating the calculated biomass pigment surface area density for the reflectance of the coating of the object by applying a compensation associated with the difference of the reflectance of the coating of the object relative to the reference coating.

This application discloses a robot adapted to complex aquatic environments, including a frame, and further comprising: an elliptical plate mounted on the frame; two windows spaced apart on the elliptical plate; two first thrusters spaced apart on the frame, facing the windows; multiple second thrusters spaced apart on the frame; a pressure-resistant chamber mounted on the frame; and a battery pack housed within the pressure-resistant chamber. The open frame structure significantly reduces the surface area facing the current, allowing strong and complex water flows to pass through the frame rather than impacting it entirely. This reduces lateral resistance by 30% compared to a fully enclosed structure, enhancing its anti-current maneuverability. The use of two first thrusters and four second thrusters as the robot's power system instantly generates lateral thrust to resist drift, enabling the robot to maintain both agility and stability in complex water environments such as strong currents, surges, and narrow passages.

This invention relates to the field of wastewater purification and discloses a replaceable-filler ecological filter dam for wastewater purification. This ecological filter dam consists of an upstream dam body, a downstream dam body, and a filtration zone located between them. The filtration zone sequentially comprises a gravel filling layer, an activated carbon filling layer, a porous filler ball filling layer, and a plant layer. The dam body is constructed of robust and corrosion-resistant materials, and its unique slope design effectively regulates water flow. The replaceable-filler design allows for easy replacement of each layer of filler via inspection ports on both sides of the dam body, ensuring long-term stable purification efficiency. The aquatic plant roots in the plant layer stabilize the filter media, absorb nutrients, and simultaneously increase oxygen through photosynthesis. This ecological filter dam can efficiently remove organic matter, nitrogen, phosphorus, and other impurities from wastewater, which is of great significance for improving the aquatic environment and controlling water pollution, providing an innovative and practical solution for wastewater treatment.

This invention specifically relates to a hydrophilic oleophobic coating, an oleophobic coating layer, and their applications constructed by preparing multi-layered composite micro / nano fillers. The oleophobic coating of this invention includes at least a composite filler, which is a micro / nano filler with a particle size of 15-80 μm, obtained by etching micron-sized fillers, followed by hydrophilic macromolecular deposition, composite with nano-sized fillers, and then crushing. This composite filler possesses a multi-layered micro / nano structure, which forms multi-level protection. This multi-level protection ensures that the coating formed by the coating retains a suitable microstructure even after mechanical damage, thus maintaining its oleophobic effect in aquatic environments and significantly enhancing the coating's resistance to mechanical damage.

This invention discloses a visual detection method for the surface condition of underwater structures in aquatic environments containing interfering objects. The method includes the following steps: First, a visualized optical flow map is obtained through self-supervised learning optical flow technology and preprocessed. A threshold is determined using the Otsu method to segment the background and foreground. A novel inter-frame difference method based on adjacent frame alignment is used to further search for small-sized underwater interfering objects. STTN is used to recover the regions occluded by underwater interfering objects in the current frame. Then, PVTv2 is used as the backbone to extract the feature pyramid of the input image, while AGFE and MFCA are integrated to improve the efficiency of underwater structure defect detection. Finally, a loss function is defined to supervise the defect detection network, allowing for better selection of optimal parameters based on the output results. This invention provides high accuracy and strong environmental adaptability for detecting the surface condition of underwater structures in aquatic environments containing interfering objects, improving both detection efficiency and accuracy.

This invention discloses a method for detecting copper ion concentration based on a hydrogel-coated PMPCF-MZI sensor and a fluorescence colorimetric dual-sensor. The detection device consists of a broadband light source, a single-mode optical fiber, a polarization controller, a flow cell, a PMPCF-MZI sensor, and a spectrometer. In the fiber optic detection path, light emitted from the broadband light source passes through the polarization controller and is input to the hydrogel-coated PMPCF-MZI, transforming into interference peaks of specific wavelengths. These peaks are displayed on the spectrometer. The hydrogel's volume and refractive index change after adsorbing copper ions, manifesting as a shift in the interference spectrum on the spectrometer. By comparing the relationship between different copper ion concentrations and the interference spectrum shift, rapid, accurate, and trace detection of copper ions in the aquatic environment is achieved. In the fluorescence detection path, the fluorescent detection solution is mixed with the test solution and irradiated with an ultraviolet lamp, inducing a change in fluorescence intensity, achieving visual qualitative detection. This invention employs a dual-system collaborative design, combining advantages such as simple structure, low detection limit, fast response time, easy operation, and high visualization. It has significant practical value and promising application prospects for rapid copper ion detection in the future.

This invention relates to an aminosilane-modified ZnAl-LDH adsorbent, its preparation method, and its application. The adsorbent is prepared by surface functionalization grafting modification of 3-aminopropyltriethoxysilane (APTES) with zinc-aluminum layered bimetallic hydroxide (ZnAl-LDH) as the matrix. The preparation method includes: pre-hydrolyzing APTES in an ethanol solution with acetic acid as a catalyst, then adding the prepared ZnAl-LDH powder and stirring thoroughly to carry out the modification reaction. After washing and drying, the modified APTES-ZnAl-LDH is obtained. Compared with existing technologies, the preparation method of this invention is simple and the conditions are mild. The obtained adsorbent exhibits excellent removal performance for perfluorinated compounds (PFAS) of different chain lengths, and has broad application prospects in the field of PFAS pollution treatment in aquatic environments.