528 results about "River water" patented technology

The invention discloses a lightweight optical flow neural network method for river velocity measurement, and the method comprises the steps: collecting a dynamic monitoring image of a water area surface flow field, calculating an approximate optical flow field through combining with a DeepFlow optical flow algorithm, and generating an optical flow label; an improved lightweight ConvFFN-Flow optical flow estimation model is built, and the model comprises a feature extraction module, a 4D related structure body module, a GRU optical flow residual error iteration module and an up-sampling module; by introducing a ConvFFN module, the model parameter scale and the calculation amount are reduced, and the optical flow prediction precision is kept; and based on pixel coordinates of front and rear frames of images of the optical flow field data, obtaining corresponding positions in a real three-dimensional space, calculating an actual displacement amount, and deducing to obtain a real flow velocity vector size and a flow direction of the water body surface. The method still has stable and high-precision optical flow estimation capability when being used for processing scenes such as fine river water surface texture and complex flow state change, and meanwhile, the calculation overhead and the storage demand are remarkably reduced.

The utility model discloses a multi-filtering-form multifunctional sewage blocking treatment system for a riverway, which comprises a group of soft enclosures which are sequentially arranged along the riverway to form a plurality of independent water purification areas, floating plants and ecological plant floating beds are arranged in the soft enclosures, and a vertical bank slope automatic liftable river water body filtering device is arranged between the soft enclosures. According to the system disclosed by the utility model, through the innovative design of the filter cloth and the application of a plurality of soft enclosures, step-by-step filtration and regional division of a water body are realized, and the filtration efficiency is improved. Meanwhile, the system adopts a hydrophilic high polymer material and a super-hydrophobic high polymer material, and combines biological filtration and physical filtration, so that the water quality is effectively purified. The system is further provided with an in-situ functional treatment area, and the water treatment efficiency and effect are improved by planting aquatic plants and adding functional filler.

The invention discloses a Yellow River water conservancy project real-time monitoring system based on edge computing, and particularly relates to the technical field of cloud computing. The system constructs a flow state characteristic interval by collecting water and sediment data; loading an algorithm component based on flow state characteristics, and changing a master control pointer by using atomization operation to realize calculation power logic hot switching; analyzing a difference value between the instantaneous torque of the motor and the no-load reference to obtain a sediment deposition resistance torque; mapping the resistance moment to a digital shadow table to extract a gain compensation parameter; and resetting controller parameters and modulating the pulse width signal according to the compensation coefficient, and outputting a driving voltage to control the gate. Through the edge end algorithm hot switching technology, the problems that a traditional system is difficult to adapt to the variable water and sediment working conditions of the Yellow River and logic updating shutdown are solved, and monitoring continuity is guaranteed. The defect of power mismatching of a single driving mode is overcome, motor overload and mechanical jamming are prevented, gate control accuracy and operation stability are greatly improved, and the service life of equipment is greatly prolonged.

The invention discloses a polluted river water nitrogen and phosphorus removal efficiency evaluation system and method based on element analysis, and relates to the technical field of sewage treatment evaluation. An algae growth dynamic model is trained, and the future growth dynamic state of algae is obtained according to future water body data and future environment driving data; the method comprises the following steps: analyzing the interference influence of interference ion concentration on sensor measurement according to future water body data, dynamically simulating the attachment rate and biofilm thickness of algae on the surface of a sensor probe according to future growth of the algae, analyzing the attachment influence of the algae on sensor measurement, and correcting the measurement precision of the sensor according to the interference influence and the attachment influence. According to the corrected sensor data, whether the nitrogen and phosphorus removal efficiency of the polluted river water meets the removal standard or not is evaluated, real-time correction of the sensor data is achieved through interference ion concentration analysis and dynamic simulation of biological adhesion influence, and the accuracy of monitoring data and the scientificity of pollution treatment efficiency evaluation are effectively improved.

The invention discloses a flood inundation range dynamic simulation method and system based on multi-source data fusion. The method comprises the following steps: S1, collecting multi-source original data of a to-be-simulated target drainage basin; s2, extracting an initial submerging range grid according to the multi-source original data; s3, according to the initial submerging range grid, generating a river channel-beach area coupled section terrain file; s4, obtaining the dynamic water level process of each downstream section according to the section topographic file and the weather forecast rainfall field; and S5, obtaining a dynamic simulation result of the flood inundation range according to the dynamic water level process. According to the invention, through continuous driving of the distributed hydrological model and the one-dimensional hydrodynamic model, full-chain simulation from rainfall forecast to submerging dynamic state is realized, so that the submerging range can be updated in real time along with meteorological conditions and riverway water levels.

The invention discloses a real-time simulation and prediction system for river water flow based on digital twinning, and the system comprises the following modules: a multi-source data synchronous collection module which is used for constructing a core hydrological data flow; the data preprocessing module is used for outputting a core driving data stream; the hydrodynamic digital twinning construction module is used for establishing a water level difference driven twinning model; the real-time simulation and assimilation calibration module is used for performing real-time calculation by taking the core driving data flow as a boundary condition and outputting a real-time simulation twin body; the intelligent rolling prediction module is used for generating a multi-section prediction sequence by utilizing an improved Seq2Seq-Attention model based on the real-time simulated twinborn body and the core driving data stream; and the visualization and early warning output module is used for presenting the prediction result and triggering early warning. According to the method, a physical mechanism and a data model are fused, and through dynamic calibration and self-adaptive prediction, the precision, the stability and the prediction period of river flow prediction are remarkably improved.

The invention discloses a low-flow-speed river microorganism and aquatic plant cooperated water environment purification method, and belongs to the technical field of water environment purification. According to the invention, the problems of high cost, easy secondary pollution and the like in the prior art are solved, the adjustment strategies generated in S2 and S3 are comprehensively analyzed and optimized through a fusion algorithm, the strategy weight is dynamically adjusted according to the importance and emergency degree of the water quality index, and the comprehensive adjustment strategy is executed by means of a cooperative control platform; the system can quickly respond to the water quality change, can more accurately adjust the putting amount and putting frequency of a microbial agent, and optimizes the working condition of a micropump and the planting configuration of aquatic plants, so that the water quality purification efficiency is remarkably improved, and the river water quality is quickly improved; by optimizing the planting configuration of the aquatic plants and maintaining the efficient root system-biological membrane electroactive symbiotic purification effect, balance and stability of a water body ecological system are promoted, and continuous optimization of the whole purification process is ensured.

The invention discloses a river management-oriented multi-parameter water quality intelligent prediction method and a river management-oriented multi-parameter water quality intelligent prediction system, relates to the technical field of environment monitoring and artificial intelligence, and particularly discloses a water quality intelligent prediction system and a water quality intelligent prediction method. According to the system, original water quality monitoring data is cleaned and repaired through the missing value filling module, so that the data integrity is ensured; performing deep feature extraction and fusion on the multi-parameter water quality data by using a convolutional neural network (CNN) to generate high-dimensional feature mapping; then, a bidirectional long-short-term memory network (Bi-LSTM) model is adopted to carry out forward and backward bidirectional learning on the extracted time sequence features, and a complex dynamic rule and a long-term dependency relationship of water quality parameter changes are accurately captured; and finally, an optimized loss function module is introduced to minimize a training error, so that the prediction accuracy is further improved. According to the method, the problems of insufficient precision, high model calculation complexity and weak multi-parameter collaborative prediction capability caused by data missing in the existing river water quality prediction technology are solved.

The invention discloses a water environment pollution monitoring method and system based on data analysis, and belongs to the technical field of pollution monitoring. The system comprises an environment monitoring module, an influence analysis module, an abnormity identification module and a visualization and storage module. The environment monitoring module collects a GIS map and historical records and collects monitoring indexes and hydrological indexes of a river water body through monitoring equipment. The influence analysis module marks the position of each monitoring device on the GIS map, analyzes the upstream and downstream relationship and sets a relative time difference; establishing an influence relation chain for each monitoring index, and calculating an influence coefficient between the monitoring devices; the anomaly recognition module takes the monitoring indexes currently collected by the monitoring devices as measured values, calculates predicted values according to the influence relation chain, calculates anomaly indexes of the monitoring devices in combination with influence coefficients and divides anomaly regions; and the visualization and storage module displays the position of each abnormal area, prompts a worker to check each abnormal area one by one according to an abnormal index in an inverted order, and stores the collected index data into a historical record.

The invention discloses a river water quality inversion and health evaluation method and system based on satellite remote sensing, terminal equipment and a medium, and relates to the technical field of environment remote sensing monitoring. The method comprises the following steps: acquiring a time-space matched multispectral remote sensing image and ground actually measured water quality parameter data set of a research area; preprocessing the image and extracting a water body area image; constructing a data sample set based on the water body area image and the water quality parameter data set; establishing a plurality of inversion models for each water quality parameter, and selecting an optimal inversion model through performance verification; and calculating a comprehensive health index and a health level of the river in the water body area through objective weight determination. According to the method, the problems of low monitoring efficiency, insufficient inversion precision and high evaluation subjectivity in the prior art are solved, efficient and accurate inversion and objective health evaluation of large-range river water quality are realized, and decision support is provided for environment management.

The invention relates to the technical field of water resource management and environmental governance, and discloses a digital twinning-based river water conservancy scheduling and water pollution collaborative governance system, which comprises a predictive digital twinning module, a digital twinning module, a digital twinning module and a digital twinning module, predicting the available purified water amount, the water environment capacity and the hydrodynamic potential energy value of key nodes in one or more time units of the river channel in the future; the right token module is used for generating a standardized tradable water right token, a pollution right token and a water power potential energy token; and the futures trading module is used for providing a trading platform for a plurality of interested parties in the drainage basin and can carry out futures trading on the water right token, the pollution right token and the hydrodynamic potential energy token. According to the invention, through digital twinborn prediction, right certification and futures trading, dynamic marketization configuration of water right and pollution right is realized, multi-target values of reservoir power generation, downstream water supply and the like are coordinated, and the pollution discharge cost can reflect the space environment risk.

The invention discloses a river water level inversion method taking altimeter footprint heterogeneity into consideration. The method comprises the following steps: acquiring an observation waveform of an SAR altimeter; space geometric parameters are calculated through footprint gridding and observation geometric modeling; constructing a water distribution scene based on the water mask and the river network, and classifying the water into a main river channel, a flood area and an adjacent isolated water body; electromagnetic scattering numerical integration is carried out based on the differentiated surface roughness parameters, and a simulated echo waveform is generated; waveform retracking and parameter inversion are realized through coarse grid search and local optimization solution; calculating an absolute water level and carrying out geophysical correction; performing multi-index quality control based on the interpretation rate of the analog waveform and the residual whitening degree; and finally outputting a water level product. According to the method, the defects of insufficient inversion precision and robustness of an existing method in a complex earth surface mixed scene are overcome, and the accuracy, reliability and physical interpretability of inland river water level monitoring are remarkably improved.

According to the river gate dispatching and flow field visualization method, the river gate dispatching and flow field visualization equipment and the medium, the lockage flow curve is predicted through the one-dimensional hydrodynamic model, the executable discharge flow is obtained through the dispatching cycle averaging, and the gate opening calculation accuracy is improved by combining the lockage formula corrected by historical data; a dynamic target water level regulation and control demand is accurately adapted, and a closed-loop mechanism of'discharged flow prediction-gate scheduling scheme distribution-scheme evaluation and correction-final decision display 'is constructed. Virtual-real mapping of the gate operation state is realized by adopting an alternative implicit ADI algorithm and a two-dimensional hydrodynamic model of an OpenMP parallelization calculation technology, upstream and downstream flow fields and water level fields after a scheduling scheme is implemented can be quickly simulated and evaluated, a severe flow state can be found and adjusted in time, potential safety hazards such as water flow disorder and scouring are avoided, and the service life of the gate is prolonged. Gate scheduling is converted from experience dependence to data and model driven scientific decision, and powerful technical support is provided for river water conservancy project management.

The invention discloses a river water level video image non-contact measurement method and system, and relates to the technical field of hydrological image processing. Comprising the following steps: acquiring a monitoring video frame sequence and physical elevation data of preset feature points; extracting the pixel coordinates of the feature points of the current frame to solve a dynamic homography matrix; extracting water and land boundary candidate edges of the current frame under each scale, and outputting optimal water line pixel coordinates and detection confidence; motion vectors are extracted from continuous frame time sequence differences, and floating object interference is eliminated according to translation features; mapping the interference-removed water level coordinates into an observation water level elevation through a dynamic homography matrix, and calculating a change rate of the observation water level elevation and a correction value at a previous moment; and judging whether the change rate is in a preset hydrological change rate interval, if so, smoothly outputting a final water level value according to the confidence coefficient, otherwise, extrapolating and correcting the water level value and reversely adjusting the next frame of edge search area. According to the invention, self-adaptive and high-robustness non-contact measurement of the river water level in a complex environment is realized.

The invention provides reclaimed water utilization equipment for water resource management, which comprises a U-shaped regeneration channel, a connecting strip is transversely arranged on the upper part of the U-shaped regeneration channel close to the inlet end of the U-shaped regeneration channel, a plurality of blocking strips are downwards arranged on the connecting strip, and a horizontal connecting plate is horizontally arranged on one side of the blocking strips in the U-shaped regeneration channel. The lower end of the horizontal connecting plate is connected with a plurality of connecting ropes, and each connecting rope is provided with a plurality of biological fillers; a biological floating bed is arranged above the horizontal connecting plate in the U-shaped regeneration channel, a plurality of planting holes downwards penetrate through the biological floating bed, a detachable planting cup is arranged in each planting hole, an opening is formed in the lower end of each planting cup, and the side wall of each planting cup is of a net-shaped structure. According to the invention, a plurality of stable water quality purification technologies are adopted, and inferior river water is converted into available regenerated water resources.

The application discloses an integrated sewage and water system intelligent management and control system and method, an electronic device and a medium, and applies to the intelligent management and control technical field of urban sewage and water systems. The system provided by the application comprises a sewage treatment plant intelligent management and control system, a sewage pipe network monitoring system, an inland river water quality intelligent monitoring system and a comprehensive management and control center. The sewage treatment plant intelligent management and control system, the sewage pipe network monitoring system and the inland river water quality intelligent monitoring system are connected with the comprehensive management and control center, and send self data analysis conditions to the comprehensive management and control center; the comprehensive management and control center monitors and controls the operation of the sewage treatment plant intelligent management and control system, the sewage pipe network monitoring system and the inland river water quality intelligent monitoring system according to the data analysis conditions. The system provided by the application can receive operation data of different parts of the urban sewage and water systems, and controls operation parameters of different systems according to the data conditions, so that the systems at different stages can realize data exchange according to the comprehensive management and control center.

The utility model provides a real-time height measuring device for a bridge, and belongs to the technical field of bridges. The real-time height measuring device for the bridge comprises a supporting arm, a cylindrical plastic body is installed at the top of the supporting arm through a fixing bolt, the surface of the cylindrical plastic body is sleeved with a ring-shaped floater, a cylindrical plastic shell is installed at the top of the ring-shaped floater, and a fork-shaped supporting frame is installed on the inner wall of the cylindrical plastic shell. The utility model discloses a river water level measuring device which comprises a circular plastic partition plate, a laser receiving film and a height measuring mechanism, the laser receiving film is mounted at the top of the circular plastic partition plate, and a miniature laser transmitter is embedded in the top of the laser receiving film. The height measuring mechanism is used for accurately measuring the real-time bridge clearance height, the real-time wave height can be calculated by subtracting the real-time bridge clearance height from the bridge height cardinal number, the corresponding bridge clearance height is calculated, and high-precision real-time bridge height measurement is achieved.

The present invention aims to treat hay fever by providing water from which pollen (an allergen) has been removed using the pollen treatment facility C of the present invention. [Solution] In a water treatment system consisting of a water tower B, a water treatment plant D, a sand filtration area E, and a water distribution reservoir F, a pollen treatment facility is provided to remove pollen from the river water 1 supplied to the water treatment plant D.

The invention discloses a specific primer group, a kit and a method for detecting double photosynthetic bacteria, and relates to the technical field of microbiological detection. The specific primer group is designed based on a conserved region of a photosynthetic reaction center L subunit gene (pufL) of rhodopseudomonas and ectothiorhodospirillum, the conservative property is greater than or equal to 99%, the similarity rate is greater than or equal to 98.5%, specific amplification of target bacteria can be realized, and cross amplification interference is avoided. The matched kit comprises the primer group, 2 * SYBR Green qPCR Master Mix, a positive control component, a negative control component and the like, and the detection method realizes rapid and sensitive detection of the two photosynthetic bacteria by optimizing sample pretreatment, PCR amplification conditions and result interpretation standards. The detection specificity is high, the sensitivity is high (the lowest detection limit reaches 10 < 2 > cfu / mL level), the detection period is short (1-2 hours), the applicability is wide, the method can be used for detecting various samples such as river water, aquaculture water and microbial inoculum fermentation liquor, one set of primers can detect two target bacteria at the same time, the detection cost and the operation complexity are reduced, and the method is suitable for aquaculture environment monitoring and microbial inoculum application quality control.

The utility model discloses a water flow intelligent regulation and control device for water conservancy facilities belongs to water conservancy engineering technical field, including the water dike, the fixed plate is fixedly connected with the water dike inner wall, and the fixed plate is fixedly connected with the main gate component between two, and one of fixed plate top is provided with the regulation and control mechanism, the vice gate is provided in the main gate component, the water dike top fixedly connected with the mounting bracket, the mounting bracket top is provided with the drive mechanism, the vice gate is driven and moves up and down through the drive mechanism, the inside of water dike is provided with the water level monitoring mechanism, the one side of mounting bracket is provided with the controller, the utility model discloses the cooperation of the main gate component and the vice gate that are set up can realize multiple water flow regulation and control mode, can according to different river water flow demand, accurate regulation flow and water level, and the staff is convenient to manage and operate, and the work efficiency is improved.

The utility model belongs to the technical field of agricultural irrigation, and particularly relates to a water pump lowering device for a river slope, which comprises a frame body, a guide frame body and a bearing sliding frame body, and the bearing sliding frame body is connected to the guide frame body in a sliding mode and can slide along the guide frame body in a reciprocating mode. The bearing sliding frame body is used for bearing and limiting a water pump, the guide frame body comprises a plurality of unit frames, the unit frames are detachably connected in sequence to form the guide frame body, and the bearing sliding frame body is connected with a rope. And the bearing sliding frame body is used for bearing and limiting the water pump, so that the water pump can be lowered into river water by only one person, the water pump is convenient to mount and dismount, the operation is very convenient, and manpower and physical strength are saved.

This invention relates to the field of water quality data monitoring methods, specifically to a remote real-time monitoring system and method for water quality chemical parameters. The method includes: deploying multiple distributed monitoring nodes at a river monitoring section; the distributed monitoring nodes collect water quality chemical parameter data in real time at a set frequency, preprocess the data locally, and store it in a cache; the distributed monitoring nodes analyze the real-time collected data to determine whether abnormal fluctuations occur; when abnormal fluctuations in water quality chemical parameters are detected and preset trigger conditions are met, the distributed monitoring nodes upload raw high-precision data packets for a period of time before and after the trigger time to a cloud server; the cloud server receives the abnormal data packets, stores them, performs secondary verification, and triggers an early warning; this invention achieves low-power, low-cost, real-time, and accurate monitoring of river water quality chemical parameters, and can improve the real-time performance of emergency response during water quality monitoring.

The invention provides a surface water-underground water integrated simulation method and system coupled with a glacier module, the method is based on an extended SWAT-GL model, rainfall, accumulated snow melt water and glacier melt water are jointly used as daily effective rainfall input, infiltration supply and river water level are transmitted to MODFLOW through a daily interface, and the water level of the MODFLOW is effectively simulated. And simulating underground water head change and surface water-underground water exchange capacity by utilizing a three-dimensional underground water flow equation, and feeding back a result to SWAT-GL river water balance, thereby realizing bidirectional dynamic coupling of the glacier-accumulated snow-surface-underground water whole process. The system breaks through the limitation that glacier mass balance and groundwater dynamics are difficult to depict synchronously in cold region simulation, can reveal a supply and regulation mechanism of glacier melt water to a groundwater system under the driving of climate change under a fine time scale, and remarkably improves the simulation capability of a cold region water circulation key process.

The utility model discloses an assembly type cofferdam, relates to the technical field of cofferdams, and aims to solve the problems that when silt is poured between two metal baffles, a large amount of dust is raised by the silt, the surrounding environment of a river channel is influenced, and the environmental protection effect is influenced. According to the technical scheme, the device is characterized by comprising a plurality of guide columns and baffles spliced with each other, the guide columns and the baffles are detachably connected, a plurality of supporting rods are detachably connected to the guide columns, a working platform is detachably connected to the supporting rods, cavities are formed in the baffles, water conveying pipes are fixedly connected into the cavities, and one ends of the water conveying pipes penetrate through the baffles to the outside. When the cofferdam is constructed, river water can be poured into the cavity through the baffle and the cavity in the baffle, so that the weight of the baffle is increased, the stability of the baffle is improved, the baffle is prevented from being washed away by a riverway, the river water is poured into the baffle, a large amount of dust cannot be generated, the surrounding environment of the riverway is prevented from being influenced, and the environmental protection effect is improved.

The application provides a multi-stage reverse electrodialysis device system and a power generation method thereof, which utilizes the salt difference energy of concentrated seawater. The device system comprises a concentrated seawater tank, n-stage river water tanks, n-stage electrolyte tanks and n-stage reverse electrodialysis membrane stacks connected in series, and n is greater than or equal to 2. The concentrated seawater tank is connected to the first-stage reverse electrodialysis membrane stack. The i-stage river water tank and the i-stage electrolyte tank are independently connected to the i-stage reverse electrodialysis membrane stack, and 1 is less than or equal to i and is less than or equal to n. The power generation method comprises the following steps: (1) introducing the concentrated seawater, the river water and the electrolyte into the concentrated seawater tank, the n-stage river water tanks and the n-stage electrolyte tanks respectively; (2) setting the flow rates of the concentrated seawater, the river water and the electrolyte, and starting the n-stage reverse electrodialysis membrane stacks to generate power. The device system provided by the application effectively utilizes the salt difference energy and reduces the salinity of the concentrated seawater, realizes the standard discharge of the concentrated seawater, meets the green and environmental protection resource utilization requirements and is conducive to large-scale popularization and application.

A water distribution regulation method for reclaimed waterway landscape environment based on algae risk control, comprising: according to the water source characteristics of seasonal river landscape environment water and the hydraulic characteristics of river water, based on the algae growth curve of indicative algae species, controlling algae risk with nitrogen-phosphorus ratio and water replacement rate as control indicators; based on the nitrogen-phosphorus ratio and water replacement rate, constructing a joint regulation model for water-quantity and water-quality of the river incorporating reclaimed water; based on the joint regulation model, optimizing the nitrogen-phosphorus ratio of the river water environment with the indicative algae species; based on the optimized nitrogen-phosphorus ratio, optimizing the joint regulation model; and utilizing the optimized joint regulation model to perform joint regulation of water quantity and water quality.

1. The name of the design product: water purifier (JY181-09). 2. The use of the design product: for filtering river water outdoors. 3. The design points of the design product: in the shape, pattern and combination of the product design. 4. The picture or photo that best indicates the design points: Design 1 perspective view. 5. Design 1 is designated as the basic design.

The present application relates to a kind of sealing gasket structure, including ring groove, split ring, sealing ring and sealing ring pressure ring;The thickness of split ring is less than the width of ring groove, split ring is installed at the groove bottom of ring groove, and is made of multiple sections, and split ring is abutted on the groove wall of ring groove.There is limiting portion for limiting split ring to move outward on the groove wall abutting with split ring;Sealing ring is abutted on the groove wall with limiting portion, the bottom of sealing ring is abutted on split ring, and the top is overflowed from the slot opening of ring groove;The two sides of the bottom of sealing ring pressure ring are respectively abutted on split ring and the groove wall away from limiting portion, and the middle part of sealing ring pressure ring is pressed on sealing ring and split ring.In addition, a special gate valve for Yellow River water is also provided.The above-mentioned sealing gasket structure and special gate valve for Yellow River water, split ring and sealing ring pressure ring are fixed, so that sealing ring can be firmly installed in valve seat ring groove, and is clamped and fixed by limiting portion located on the side wall of ring groove, to realize the quick and convenient disassembly of sealing gasket structure, and low use cost.

The utility model relates to the technical field of overwater salvaging devices, in particular to an inland river overwater salvaging grabbing device which comprises a holding rod frame, the holding rod frame comprises an outer frame and a holding frame, the holding frame is installed in the outer frame in a sliding mode, a fixing pipe is fixedly installed at the lower end of the outer frame, an extending pipe is installed at the lower end of the fixing pipe in a sliding mode, and the extending pipe is connected with the fixing pipe. Locking bolts for locking the extension pipe are arranged on the two sides of the fixing pipe, and a center shell is fixedly installed at the lower end of the extension pipe. By arranging the slidable holding frame, an operator can conveniently adjust the holding position, through cooperation of a fixed pipe and an extension pipe and arrangement of a locking bolt, the length of the device can be adjusted according to actual fishing requirements, and the device adapts to fishing operation of different depths. And the multiple clamping claws and the driving frame are installed on the center shell, synchronous clamping of the objects can be achieved, and the fishing efficiency is improved.

The invention provides a river water pollution treatment device, which belongs to the technical field of environmental pollution abatement, and comprises a pretreatment water diversion cylinder, an adjustable buffer water delivery assembly is arranged on the inner side of the pretreatment water diversion cylinder, and the lower part of one end far away from a water inlet is connected with a sediment trapping cylinder; a conical filter cylinder is arranged on the inner side of the sediment trapping cylinder and is communicated with the rear side of the filter plate in the pretreatment water guide cylinder through an intercommunication guide pipe. The rear side of the filter plate is connected with the bottom of a deep treatment box through a water delivery pump; a detachable sealing top cover and a purified water outflow pipe are arranged at the top of the box. A biological membrane reaction assembly and an ultraviolet lamp disinfection assembly are arranged in the deep treatment box, and the biological membrane reaction assembly depends on a rotatable carrier frame and utilizes attached microorganisms to degrade organic matters and nitrogen and phosphorus nutritive salts, so that efficient purification is realized. According to the invention, stable, efficient and integrated treatment of the polluted water body of the riverway is realized through the synergistic effect of self-adaptive buffer water inlet, efficient sedimentation and filtration, rotary biofilm degradation and ultraviolet disinfection.