227 results about "Environment water" patented technology

The invention relates to the technical field of error correction, in particular to a water conservancy facility environment interference error correction method and device based on multi-dimensional data. The method comprises the following steps: collecting historical monitoring logs of water conservancy facilities, carrying out environmental disturbance event identification and multi-scale disturbance relevance mining, and constructing an environmental disturbance space-time relevance map; monitoring surrounding environment water monitoring parameters of the water conservancy facility, performing sequential response trend change analysis and dynamic response characteristic modeling, and constructing a facility environment personalized change response portrait; identifying a plurality of water body position monitoring data according to the surrounding environment water body monitoring parameters, and constructing a hydrodynamic full-field sensing graph; and performing nonlinear correlation analysis based on the hydrodynamic full-field perception graph and the personalized change response portrait of the facility environment, and constructing a digital twinborn model of the water conservancy facility under the water flowing condition. According to the invention, through dynamic error trend analysis and correction, the monitoring precision and monitoring stability of the water conservancy facility are improved.

The invention belongs to the technical field of environmental water quality pollution monitoring, and particularly relates to a drainage basin water environment monitoring and emergency pollution rapid tracing method and system based on water quality pollution detection, and the method comprises the following steps: constructing a multi-parameter cooperative monitoring model, and carrying out the training and deployment; through distributed sampling points and sampling stations, real-time data with verification marks and time-sharing data of watershed water environment water quality pollution detection are collected; mLP and LSTM / GRU models are adopted, EEM spectrum data and environment characteristics are fused, and multi-source heterogeneous data are fused and analyzed; whether an emergency pollution event occurs or not is automatically identified according to a preset condition, the pollution types and traceability results of water environment monitoring and emergency pollution are automatically output, manual further checking is carried out, and environmental law enforcement checking is carried out. According to the invention, drainage basin water environment pollution condition monitoring and emergency pollution rapid tracking and tracing can be completed in a large-range, low-cost and high-efficiency manner so as to support environment law enforcement.

The invention discloses a method and system for detecting trace organic pollutants in a water body, and relates to the field of environmental water body detection.The method comprises the steps that environmental parameters of a target water body sample to be detected are collected, and baseline spectral data of the target water body sample are obtained; determining disturbance operation parameters matched with the target water body sample, and applying micro-disturbance to the target water body sample according to the disturbance operation parameters to obtain disturbance response spectral data; performing time sequence differential analysis on the disturbance response spectral data and the baseline spectral data to obtain a disturbance response residual error spectrum, and identifying an optimal response characteristic wavelength from a characteristic response wavelength interval of the target trace organic pollutants based on the disturbance response residual error spectrum; and solving the concentration correction model according to the optimal response characteristic wavelength, the disturbance operation parameters and the environmental parameters to obtain the concentration of the target trace organic pollutants. Therefore, the detection sensitivity and the anti-interference capability of trace organic pollutants in the water body sample are improved.

The utility model relates to the technical field of water conservancy and hydropower construction, and discloses a multi-environment water quality detection device for water conservancy and hydropower construction, which comprises a tank body, a fixing ring is sleeved on the surface of the tank body, supporting plates are fixedly connected with two sides of the fixing ring in an axial symmetry manner, and a supporting block is fixedly connected with the top of one end of each supporting plate. The top of the supporting block is fixedly connected with a filtering assembly used for filtering sand and stones in water. According to the multi-environment water quality detection device for water conservancy and hydropower construction, through the arrangement of the stirring assembly, a water source enters the tank body after being filtered, and when a worker needs to detect the water source, a driving motor can be connected to an external power source in advance, so that the driving motor drives an annular blade to stir in the tank body through a rotating rod; pollutants in water can be uniformly distributed by stirring the sample water, so that the condition of water quality is reflected more accurately, the condition that the concentration of local pollutants is too high or too low is avoided, and the accuracy of water quality detection data is further improved.

The invention relates to the field of water quality monitoring, in particular to a water area environment water quality on-line intelligent monitoring device and method, and the water area environment water quality on-line intelligent monitoring device comprises a shell, a defoaming mechanism and a monitoring mechanism; a water inlet and a water outlet are formed in the shell, and a water flow channel is formed in the shell; a water inlet valve is mounted at the water inlet; the defoaming mechanism comprises a negative pressure cylinder arranged in the shell and a piston assembly arranged in the negative pressure cylinder; the piston assembly moves upwards to suck the water flow channel to negative pressure, bubbles in water flow are promoted to be separated out, the pressure difference between the two sides of the water inlet valve is increased, and the water flow is promoted to enter the water flow channel through the water inlet valve. The opening threshold value of the water inlet valve is adjusted according to the gas amount in the water flow, so that new water flow enters from the water inlet valve when the piston assembly sucks the water flow channel till the absolute value of the negative pressure is large enough, and the separation effect of bubbles in the original water flow and the new water flow in the water flow channel is guaranteed. And the water quality monitoring accuracy of the monitoring mechanism is improved.

The invention belongs to the technical field of surveying and mapping, and provides a power transmission and transformation line environment water conservation information surveying and mapping system based on resolution optimization, and the system comprises a basic information obtaining module which is used for obtaining a remote sensing image of power transmission and transformation line environment water conservation through shooting by using a high-resolution satellite and combining with an unmanned aerial vehicle, and obtaining basic information; the information optimization module is used for performing partial content optimization on the basic information by using ground measurement equipment to obtain optimized basic information; and the surveying and mapping implementation module is used for drawing the ring water conservation information of the power transmission and transformation line based on the optimized basic information. According to the method, the remote sensing image of the power transmission and transformation line environment water conservation is shot by using the high-resolution satellite in combination with the unmanned aerial vehicle and the ground measurement equipment, and the power transmission and transformation line environment water conservation information is drawn based on the remote sensing image, so that the drawing quality of the power transmission and transformation line environment water conservation information can be improved; and data support is provided for whole-process management and control of power transmission and transformation project environment water conservation.

The invention provides a method for detecting PFAS based on a three-dimensional Ag / NiFe-LDHs surface enhanced Raman scattering substrate and ion pair extraction, and belongs to the technical field of PFAS detection.The method comprises the steps that firstly, the three-dimensional Ag / NiFe-LDHs SERS substrate is prepared, then ion pair extraction-dissociation treatment is conducted on a water sample to be detected, a detection solution is obtained, finally, the substrate is immersed in the detection solution for adsorption, and finally the detection solution is obtained. A spectrum is collected through a Raman spectrometer, and semi-quantitative detection of PFAS in a water sample is achieved according to the linear relation between the characteristic peak intensity and the PFAS molar concentration logarithm. According to the method, collaborative application of the three-dimensional Ag / NiFe-LDHs SERS substrate and an ion pair extraction technology and indirect detection of PFAS are realized, the detection difficulty that PFAS Raman signals are weak and are difficult to enrich is improved, the detection sensitivity and adaptability of PFAS in a water sample are improved, and an application foundation is laid for rapid monitoring of PFAS pollution of an environmental water body.

The invention relates to the technical field of water conservancy control, and discloses a water conservancy gate cooperative control method and system, and the method comprises the steps: fusing the real-time operation parameters and environmental hydrological parameters of a water conservancy gate, and obtaining a dynamic feature data set; identifying the interaction relationship between the water level and the flow velocity parameter, and constructing a hydraulic association network; determining a leading gate and an auxiliary gate based on the network edge weight, and generating an initial control instruction sequence; a control effect data set is formed by monitoring actual data and an operation state of opening degree adjustment; analyzing a control deviation between the control effect data set and an expected control target to correct an action time sequence and an opening parameter in the gate coordination rule to obtain an optimal control strategy; a gate cooperation rule in the optimization control strategy is fed back to the construction process of the hydraulic association network, and the judgment standards of the main gate and the auxiliary gate are updated; the cooperative control efficiency of the water conservancy gate can be improved.

The invention, which relates to the technical field of water resource management, discloses a block chain-based watershed environment water volume allocation system comprising a data acquisition module for acquiring real-time data; the risk assessment module is used for calculating a decoupling risk index; the self-adaptive regulation and control module is used for generating an initial regulation and control vector in combination with multiple factors; the safety verification layer is used for determining an optimal regulation and control vector; and the intelligent contract execution module executes corresponding regulation and control according to the risk level to form an automatic closed loop from sensing to execution. According to the method, multi-source heterogeneous data are integrated through a block chain technology, and a credible shared drainage basin database is constructed; a decoupling risk index is dynamically calculated, and conflicts between market transactions and ecological safety are accurately quantified; prospective regulation and control are realized by combining deep reinforcement learning with meteorological prediction; a differential strategy is executed based on a hierarchical intelligent contract, a closed loop from sensing, decision making to execution is formed, dynamic and accurate management of drainage basin water resources is achieved, and market and ecological requirements are balanced.

The utility model provides an environmental water quality sampling device, which belongs to the technical field of environmental detection and is provided with a top plate, a driving disc and a driven disc are rotatably connected onto the top plate, and a mounting disc positioned below the driven disc is fixedly mounted in the middle of the driven disc through a connecting rod; a plurality of mounting grooves are formed in the mounting disc at equal intervals along the circumference of the mounting disc, a plurality of strip-shaped grooves corresponding to the mounting grooves are formed in the driven disc, and a driving column is fixedly mounted on the driving disc and is in sliding connection with the strip-shaped grooves; sampling devices are mounted on the mounting grooves, water taking cavities are formed in the sampling devices, water inlet pipelines are fixedly mounted at the upper ends of the outer walls of the sampling devices, water outlet pipelines are fixedly mounted at the lower ends of the outer walls of the sampling devices, and the water inlet pipelines and the water outlet pipelines are communicated with the water taking cavities. The utility model solves the technical problems that the detection sample obtained at the same position is single, and if the sampled water is polluted by mistake after sampling, the detection result is inaccurate.

The invention relates to the technical field of geological disaster monitoring, in particular to a geological disaster real-time monitoring platform and method based on intelligent AI. The method comprises the following steps: acquiring multi-source monitoring data; analyzing the multi-source monitoring data, and determining the stability of the soil body; determining soil body characteristic parameters based on soil body stability; obtaining environmental hydrological data, and determining a geologic structure dynamic response mode according to the environmental hydrological data; and determining a geological disaster risk level according to the soil body characteristic parameters and the geological structure dynamic response mode. Soil body characteristic parameters are determined, quantitative indexes of building specificity are provided, and customized risk assessment is supported. The method comprises the following steps: acquiring environmental hydrological data, determining a dynamic response mode of a geologic structure according to the environmental hydrological data, capturing real-time behavior characteristics of the geologic structure under environmental change, and identifying a weak area of the geologic structure. And according to the soil body characteristic parameters and the geological structure dynamic response mode, determining the geological disaster risk level, realizing building level early warning, and quantifying the risk evolution rate.

Methods and kits are provided for detecting and quantifying a PFAS compound or a mixture of PFAS compounds in a sample. The method includes the steps of providing a complex of a cyclodextrin and an indicator molecule, contacting the complex with the sample and measuring a parameter of the indicator molecule. The parameter is correlated with an extent of displacement of the reporter molecule from the cyclodextrin and binding of the PFAS compound to the cyclodextrin. This indicates the presence and quantity of the PFAS compound in the sample. The method is useful for monitoring samples such as environmental water samples. The kits include assay solutions for performing the methods and may also include solid-phase extraction matrices for pre-treatment of samples.

The invention discloses a confocal laser microscope detection method for micro-plastic surface biofilm components and biomass, and belongs to the field of micro-plastic pollution monitoring. The method comprises the following steps: carrying out stratified sampling and polymer component identification on micro-plastic in an environmental water body; the method comprises the following steps: marking algae, blue-green algae, bacteria and extracellular polymeric substances in a biological membrane through specific fluorescent staining, carrying out high-resolution three-dimensional imaging by utilizing a confocal laser microscope, and realizing batch quantitative analysis of each component of the biological membrane by adopting ImageJ software. The technical problems that an existing detection method is insufficient in parameter dimension, evaluation result deviation is caused only based on partial component quantification, and the influence of the overall structure of the biological membrane on the micro-plastic migration behavior cannot be truly reflected are solved. According to the method, the biomass and spatial distribution of each component of the biological membrane can be comprehensively and accurately quantified, the accuracy of analyzing the vertical migration mechanism of the micro-plastic is improved, and multi-dimensional data support is provided for ecological risk assessment.

The present invention belongs to the technical field of analysis and detection, and specifically relates to a method and system for rapid detection of iron ions in environmental water. The method of the present invention comprises the following steps: step 1, treating a water sample to be detected with a chemical color development system, causing the chemical color development system to change color, and taking a picture of the chemical color development system; step 2, segmenting a region of interest from the picture; step 3, calculating the change value of each component in the RGB color space and the HSI color space in the region of interest; step 4, using the change value of at least two components obtained in step 3 as a feature, analyzing the content of iron ions in the water sample to be detected by a multivariate regression equation model. The present invention has significant advantages such as low cost, simple operation, high detection efficiency, and strong anti-interference ability, and is suitable for detecting Fe ions in natural water bodies. 3+ The rapid detection of concentration has a good application prospect.

The invention discloses a method for enriching and extracting free glutamic acid from an environmental water body and / or sediment. The method combines freeze drying, mechanical grinding, chemical extraction, cation exchange resin purification and low-temperature concentration. According to the method, the extraction efficiency, the yield and the purity of the free glutamic acid can be remarkably improved, sample background interference and glutamic acid degradation are avoided, and glutamic acid can be separated from other amino acids possibly existing in a sample, so that the purpose of enrichment extraction is achieved. Meanwhile, the method is easy and convenient to operate, efficient in extraction, capable of being used for on-site rapid treatment, wide in raw material source, low in cost and wide in application prospect in the field of environment analysis and ecological monitoring.

The utility model relates to an enhanced denitrification device for a microbial electrolysis constructed wetland. The enhanced denitrification device comprises a constructed wetland system, an electrolysis system and an intelligent control system, the constructed wetland system comprises a water distribution area and a constructed wetland reaction area; a water inlet device is arranged in the water distribution area, and the water distribution area is communicated with the constructed wetland reaction area through the water inlet device; wherein an electrolysis system and an intelligent control system are also arranged in the constructed wetland reaction zone. The device has the advantages that the removal of pollutants, mainly nitrogen, of the constructed wetland is enhanced by mainly utilizing external voltage in the electrolysis system 2, and the water inlet flow, the external voltage and the distance between the electrodes can be adjusted according to the intelligent control system 3, so that the surface hydraulic load of the constructed wetland and the current intensity in the wetland are controlled; and the two systems cooperate to enhance the removal of pollutants, especially nitrogen, of the constructed wetland, so that the pollutants in water are efficiently removed, the water quality of discharged wastewater is improved, and the environmental water quality is improved.

The invention discloses a magnetic limited phosphorus-doped photocatalyst as well as a preparation method and application thereof, and belongs to the field of functional materials for pretreatment of environmental chemical pollutants. The preparation method comprises the following steps: preparing magnetic Fe3O4.TiO2 by adopting a microwave method, and introducing a C18 modified carbon framework material and phosphate ions by taking the magnetic Fe3O4.TiO2 as a matrix to prepare the magnetic limited-access phosphorus-doped photocatalyst. The magnetic limited phosphorus-doped photocatalyst disclosed by the invention has the ultrahigh saturated adsorption capacity of a C18 modified carbon framework material, the instantaneous solid-liquid separation capacity and the efficient photocatalytic degradation capacity of nano titanium dioxide modified magnetic ferroferric oxide and the synergistic photocatalytic performance of phosphate; the problem that a traditional photocatalyst is poor in adsorption capacity is fundamentally solved, and the photocatalyst has more advantages in the aspects of adsorption removal and photocatalytic degradation of bisphenol organic pollutants in an environmental water sample.

The application discloses a complex environment water level monitoring system and method based on heterogeneous light field cooperation, which is characterized in that: a water gauge image is segmented from a water gauge point cloud and a joint external parameter; the water gauge image is further segmented after image enhancement, and the tilted water gauge is corrected; the intensity of the water gauge point cloud is accumulated, and the water level line is obtained through the maximum gradient method; the corrected water gauge image is detected by using a target detection algorithm to detect digital characters, the character recognition algorithm is used to perform OCR recognition on the detected digital characters, and the water level value is calculated according to the digital characters, the water level line and the water gauge image. Through the combination of laser radar and visible light field, the reflection characteristics of different materials are utilized, so that the water level in the complex environment of a river channel, a reservoir and a coast can be monitored in real time. The interference of floating objects and weather factors on water level detection is effectively avoided, and the accuracy and robustness of water level monitoring are significantly improved.

The utility model discloses a water supply selectable water inlet valve structure and a fire fighting truck thereof, and belongs to the technical field of fire fighting equipment. Comprising a valve body, and a group of valve body water inlet connectors and a valve body water outlet connector are formed in the side portion of the valve body. The valve cover is hermetically fixed with the upper opening of the valve body; the valve mechanism is arranged in the valve body cavity, the bottom of the valve mechanism is pivotally supported on the bottom wall of the valve body cavity, the middle part is matched with one side, facing the valve body cavity, of the valve body water inlet interface, and the top is matched with the valve cover; the valve position pivoting switching mechanism is matched with the top of the valve mechanism and is characterized in that the group of valve body water inlet interfaces comprises a water tank left connecting pipe interface formed on the left side of the valve body, a water tank right connecting pipe interface formed on the right side of the valve body, an external environment water source hose left connecting port formed at the left end of the front side of the valve body and an external environment water source hose right connecting port formed at the right end of the front side of the valve body; the valve body water outlet connector is formed in the middle of the rear side of the valve body. The system has the advantages that water in the water tank and external environment such as pond and lake water are shared, and water in the water tank is saved; and the requirement for sufficient water supply on a fire-extinguishing site is met.

This invention belongs to the field of analytical detection technology and relates to a method for detecting estradiol using a combination of organometallic framework enrichment and enzyme-linked immunosorbent assay (ELISA). A magnetic organometallic framework solid-phase extractant is used to enrich estradiol in the sample, followed by detection of the enriched estradiol using ELISA. The magnetic organometallic framework solid-phase extractant is prepared by subjecting mercaptoacetic acid-modified Fe3O4 particles, zirconium salt, and 2-amino-terephthalic acid to a solvothermal reaction at 110–130°C for 22–26 hours. The detection method provided by this invention has advantages such as short detection time, high sensitivity, good specificity, and high accuracy, thereby enabling the detection of trace amounts of estradiol in environmental water samples.

The invention belongs to the technical field of toxicity tests, and discloses a method for evaluating zebra fish developmental toxicity by single or combined use of fluopyram and tebuconazole. The method is simple, efficient and accurate, through a combined toxicity test and a single pesticide test, reference data is conveniently increased according to the influence of different environments and different medicaments on animals, the influence of pesticides on zebra fish development is calculated according to the death rate and the median lethal concentration of zebra fish embryos, the data is reasonably analyzed and processed, and the method is suitable for popularization and application. The problems that related evaluation standards formulated by depending on a single effect are not accurate and cannot truly reflect the change of the real environment quality are avoided, the environmental risk of effectively evaluating the pollutants in the environmental water body is improved, and an environmental threshold value safer for aquatic organisms is formulated conveniently.

The invention belongs to the technical field of environmental hydraulics, and relates to a carbon transportation characteristic research method and device under reservoir dispatching operation and computer equipment, and the method comprises the steps: constructing a reservoir three-dimensional carbon transportation monitoring network, and obtaining the basic data of a carbon transportation process; based on the basic data, constructing a hydrodynamic force-water quality coupling model for simulating the carbon transportation process, and verifying the hydrodynamic force-water quality coupling model by using monitoring data; quantifying scheduling operation characteristics, and extracting scheduling characteristic parameters influencing carbon transportation; establishing a carbon flux accounting model considering the scheduling influence, and quantifying the influence of scheduling on carbon income and expenditure; establishing a quantitative relationship between the carbon transport characteristic parameters and the scheduling characteristic parameters; and scheduling optimization evaluation is carried out based on carbon environment constraints, a carbon target is incorporated into a scheduling optimization system, and a low-carbon scheduling scheme is proposed. The method has systematicness and dynamics, realizes quantitative evaluation of carbon transportation, and has practicability; the method can be popularized to other types of water body carbon cycle research, and has expansibility.

The invention discloses a solid fluorescent material based on a tetraphenylethylene derivative and application of the solid fluorescent material in water content detection. On the basis of the special structure and functional design of a hydrogen bond organic framework, the spatial distribution and interaction mode of structural solvents (such as dimethyl sulfoxide and DMSO) and adsorption solvents (such as methanol, water and acetone) in the framework are accurately controlled, and on the premise that the integrity of a crystal structure is kept, the preparation method is simple and easy to implement. And reversible exchange and real-time optical monitoring of solvent molecules in the pore channels are realized. The material can generate obvious fluorescence color change (467-602nm) along with the change of the environmental water content, and has the advantages of high response speed, high sensitivity, good thermal stability and good recycling performance.

This invention belongs to the field of microbial technology and discloses the application of *Lactobacillus plantarum* P101 in the adsorption and removal of nanoplastics in environmental water. The *Lactobacillus plantarum* P101 strain is deposited at the China Center for Type Culture Collection (CCTCC), accession number CCTCC NO: M 2021108, deposit date January 19, 2021. This strain exhibits an adsorption rate of ≥85% for nanoplastics with a particle size of 100-1000 nm. The strain was isolated from fermented sauerkraut. The *Lactobacillus plantarum* P101 provided by this invention demonstrates significant adsorption capacity for nanoplastics in both live and inactivated states, which is of great significance for the environmental remediation of nanoplastics.

The invention is applicable to the technical field of colorimetric detection, and provides a bisphenol A colorimetric detection method based on copper-based nano enzyme. The copper-based nano-enzyme with laccase-like activity is prepared in an alkaline water phase system through a one-step method by taking low-price natural plant protein-zein as a ligand, divalent soluble copper salt as a metal precursor and hydroxylamine and the like as a reducing agent. The copper-based nano enzyme is superior to natural laccase in the aspects of catalytic activity, substrate affinity and stability, and bisphenol A can be catalyzed to be oxidized to generate quinone compounds; the quinone compound is further subjected to a coupling reaction with 4-aminoantipyrine, and a red product with a remarkable characteristic absorption peak at the wavelength of 510 nm is generated. The quantitative analysis of bisphenol A can be realized by measuring the absorbance of the system at 510nm. The method has the advantages of high sensitivity, low detection cost, simplicity and convenience in operation and the like, and is suitable for rapid detection of bisphenol A in drinking water and environmental water.

The invention discloses an ecological space water allocation strategy optimization method and system, and relates to the technical field of ecological water. Comprising the following steps: collecting and preprocessing an infrared spectrogram of a plant with known chlorophyll content, and establishing a neural network model to predict the chlorophyll content. Dividing the ecological space of the to-be-distributed water source into a plurality of sub-regions, randomly selecting plants, collecting an infrared spectrogram, and inputting the infrared spectrogram into the prediction model to obtain a chlorophyll content prediction value. Calculating a plant water demand influence index according to the chlorophyll content and the plant growth characteristic parameters, and obtaining soil characteristic parameters to calculate a soil water source preservation coefficient. The method comprises the following steps: acquiring environment characteristic parameters, calculating an environment water supply influence index, generating a water supply demand index by combining a soil water source preservation coefficient and a plant water demand influence index, comparing the water supply demand index with a water supply demand threshold range, generating a corresponding water use allocation strategy, and improving the overall health of an ecological system and the growth efficiency of plants.

The invention discloses a preparation method and application of an all-solid-state ion selective microelectrode, and belongs to the field of ion selective electrodes. A composite material with the mass ratio of super-hydrophobic carbon nanotubes to CoWSe2 being 3: 1 is used as an ion-electron transduction layer material for constructing the all-solid-state ion selective microelectrode, and a nitrate ion selective polymer film or a hydrogen ion selective polymer film is respectively dispensed on the surface of the transduction layer; and drying to obtain the all-solid-state nitrate ion selective microelectrode or all-solid-state hydrogen ion selective microelectrode. According to the method disclosed by the invention, the all-solid-state ion selective microelectrode can more effectively inhibit the formation of a water layer, so that the microelectrode has better potential stability and longer service life when being applied to the detection of ions in an environmental water body sample.

The invention discloses a deep sea environment water-guided laser cutting device and method. The deep sea environment water-guided laser cutting device comprises a spray head device, a drainage cover device, a self-circulation pressurizing device, a laser generating device and a mobile positioning system. The nozzle device is provided with an annular water channel to stabilize water jet; the drainage cover coaxially sleeves the outer side of the spray head, and a local dry cavity is formed through gas injection; the self-circulation pressurizing device is used for extracting seawater and pressurizing and conveying the seawater; the laser generating device calibrates a laser focus through the calibration lens cone and the optical lens, and coaxial coupling of the water jet and the laser beam is achieved. The deep sea cutting precision and efficiency are improved, environmental interference is reduced, and the method is suitable for underwater high-precision machining.

The invention provides a solid-phase extraction system suitable for screening unknown pollutants in an environmental water sample, which comprises three sample bottles arranged on an oscillator (6), a sample injection interface kit (9), a sample injection needle kit (10), a multi-way valve I (11), a multi-way valve II (19), an injection pump (20), a sample loading needle kit (22) and three solid-phase extraction columns, the neutral extract receiving pipe (32), the acid extract receiving pipe (33), the alkaline extract receiving pipe (34) and the flow guide frame (31) are arranged on the receiving pipe frame (35) and are respectively used for receiving extracts of a solid-phase extraction column, the guide rail (36) is used for moving the flow guide frame (31) and the receiving pipe frame (35), and the flow guide pipe I (27), the flow guide pipe II (28), the water sample flow guide groove (29) and the organic solvent flow guide groove (30) are arranged on the flow guide frame (31). The invention also provides a solid-phase extraction method applicable to screening of unknown pollutants in an environmental water sample, which is realized by adopting the system.

The invention relates to the field of water quality monitoring, and discloses a float-type environmental water quality monitoring device which comprises a floating block, a filter separation net is arranged at the bottom of the floating block, a plurality of water quality detection elements are arranged at the bottom of the floating block, the filter separation net is used for protecting the water quality detection elements, and the water quality detection elements are used for detecting the water quality condition. An air suction cutting device is arranged in the floating block; a cutting piece in the air suction cutting device ascends and descends to cut aquatic plants on the surface of the filtering separation net, aquatic plant root systems attached to the surfaces of the filtering separation net and the water quality detection element are reduced, and therefore the detection accuracy is improved, and errors are reduced; a second round block is driven by a cleaning part in the anti-adhesion device to clean the surface of the water quality detection element, and adhered objects on the water quality detection element are taken away through bubbles, so that the accuracy and the use precision are improved.