106 results about "Surface water quality" patented technology

The invention relates to a water quality sampling robot for full-automatic surface water, which comprises a hull, a driving device, a control device and a sampling device, wherein the control device comprises a navigation device, a central processing unit and a communication module; the sampling device comprises a weather and water quality monitoring sensor, an underwater sensor and a sampling pipe retractable device; the navigation device comprises a GPS satellite positioning sensor, an electronic compass and an acceleration sensor; the navigation device is electrically connected with the central processing unit and the communication module; the communication module is connected with a base station through a wireless signal; the hull is provided with a radar, a laser ranging sensor obstacle avoiding device, a fixing agent dripping device and an insulation box; and the control device is electrically connected with the driving device and the sampling device to realize automatic sampling and automatic navigation on the hull. The water quality sampling robot has the advantages of small volume, light weight, adoption of electric drive and no pollution emission; and compared with large-scale sampling vessels, the water quality sampling robot not only saves energy consumption and labor power, but also reduces cost and use threshold.

The invention discloses an autonomous navigation type surface water quality sampling and real-time monitoring water level robot. The autonomous navigation type surface water quality sampling and real-time monitoring water level robot comprises a ship body, a power system, a master control system, a navigation system, a communication system, a sampling monitoring system and a propelling system, wherein the power system, the master control system, the navigation system, the communication system, the sampling monitoring system and the propelling system are arranged on the ship body; the navigation system comprises an electronic compass, a GPS (global positioning system), an ultrasonic obstacle-avoiding sensor and a camera, and the navigation system is connected with the master control system; and the sampling monitoring system comprises a water sampling swing rod which is arranged on a steering engine, the water sampling swing rod controls the water sampling depth and is connected with one end of a water sampling pipeline, the other end of the water sampling pipeline is shunted into all sampling bottles from a peristaltic pump to a pinch valve, all sampling bottles are arranged in a heat preservation box, a water quality sensor connected with the master control system is arranged on the water sampling swing rod, and the propulsion mode of the propelling system adopts an externally-mounted double-direct-current motor and a screw propeller. The autonomous navigation type surface water quality sampling and real-time monitoring water level robot has small volume and light weight, can be carried conveniently, can be operated simply, is free of pollution, and can realize sampling monitoring to an area where a person cannot reach.

The invention discloses a surface water quality evaluation method based on combined weight, which includes the following steps, firstly selecting water quality indexes to build a water quality evaluation system, then adopting the subjective weighting method, the analytical hierarchy process, the objective weighting method and the super-standard weighted method to obtain three groups of weight vectors of the water quality indexes, and adopting the weight synthesis method based on the ideal point method for weight synthesis, so as to confirm the combined weight of the water quality indexes; taking the water quality indexes as evidences, calculating the basic trust distribution of the evidences to various water quality types, and then performing evidence synthesis based on the evidence additive synthesis rule of the combined weight; and selecting the water quality type with the highest trust degree as the water quality evaluation type as per the evidence synthesis result, and analyzing the variation trend of water quality as per the variation of trust degree of various water quality types. The surface water quality evaluation method provided by the invention integrates the influence of various water quality indexes to determine the water quality type, is objective and reasonable in evaluation results, and can be used for analyzing variation trend of water quality at the same time.

The invention discloses an ecological corridor for removing nitrogen and phosphorus of micro-polluted river water and a construction method thereof, which belong to the field of river water pollution treatment. The ecological corridor is positioned in a pond with an area of over 4,000m<2>; two or more parallel flow guide dams are formed along the length direction of the pond; adjacent flow guide dams are opposite to each other; the length of the flow guide dam is at least three fourths the length of the pond; a flow guide corridor is formed between the flow guide dam and a shore side and between the flow guide dams; floating plants or a fixed ecological floating bed is arranged in the flow guide corridor; and the water surface coverage of the ecological floating bed is 10 to 20 percent. The flow guide corridor is constructed by establishing the flow guide dam and the ecological corridor is constructed by arranging the ecological floating bed. The water quality index of most of the micro-polluted river water treated by the ecological corridor can reach and exceed the IV-V class standard in the national surface water quality standard (GB2002-3838). The purified water body finally flows out through an overflow outlet at the rear end of the system and used for fishery, landscapes, agricultural irrigation water and the like.

The invention discloses a simulation test device and a test method for grassed swales. The device comprises a runoff generating device, a runoff flowing device, a runoff collecting device and a monitoring device, wherein the runoff flowing device comprises a V-shaped slot and an angle adjusting structure for adjusting included angles between the longitudinal slope of the V-shaped slot and the twoside faces of the V-shaped slot; the two side faces of the V-shaped slot are provided with a plurality of sampling holes; the bottom of the V-shaped slot is provided with a supporting structure; the V-shaped slot is filled with soil; and the surface of the soil is provided with a surface treatment layer. Testing water with different contaminant concentrations is prepared and different hydraulic loads and flow rates are set according to the purposes of the tests; and the influence of different earth surface measures on the utilization efficiency of the grassed swales and the runoff contaminantregulation can be known from the observation of soil moisture and the monitoring of surface water quality and contaminant concentration of soil solution. Thus the device and the method have great significance for water conservation and municipal rainfall runoff contamination.

The invention provides a three-dimensional layered water quality monitoring method and a three-dimensional layered water quality monitoring system. The method comprises the following steps of collecting water quality information of each measurement point, calculating mean square deviation of water quality parameters of each measurement point in real time, and collecting positions underwater according to the mean square deviation value; automatically controlling the underwater collection speed according to the water-level fluctuation speed; and collecting water quality information at different underwater depths according to the mean square deviation of water quality information, measurement points with water-level fluctuation selective adaptability and underwater speed, and establishing water body information in a layered manner. The system comprises a lifting execution device, an underwater collection device arranged on the lifting execution device, and an overwater control device respectively connected with the lifting execution device and the underwater collection device. The method and the system are capable of automatically and accurately monitoring ocean water quality or surface water quality, intelligently controlling the collection depth, speed and interval, accurately, effectively and automatically dividing each water layer along the direction, and providing accurate and reliable data guarantee for water quality research.

The invention discloses a tailing-based cementing material and a preparation method thereof. The method comprises the following steps: drying a tailing raw material, and sequentially carrying out mechanical ball-milling activation treatment, thermal activation treatment and chemical agent activation treatment to obtain the tailing-based cementing material. According to the method, tailings are activated through a mechanical activation, thermal activation and chemical activation combined excitation method, the potential volcanic ash activity is utilized, the cementing material with better cementing performance is obtained, the maximum compressive strength of the solidified gel material can reach 10 MPa, the solidified gel material completely meets the underground filling technology, the solidified leachate meets the surface water quality IV type water standard, the method is simple in tailing treatment process, safe and free of pollution, and a brand-new thought can be provided for comprehensive utilization and resourceful treatment of tailings.

The invention discloses an ecological water diversion method for treating the water environment of the Binjiang water body. The method comprises the following steps: step 1, defining a watershed rangeas a research range; step 2, carrying out synchronous monitoring on the field hydrology-water quality; step 3, carrying out the generalization of a sewage discharge port; step 4, constructing a waterenvironment mathematical model, wherein the water environment mathematical model comprises a hydrodynamic model and a convection diffusion model; step 5, verifying the rate of the model; step 6, setting an improvement scheme; step 7, performing discussion and analysis on an obtained calculation result. According to the invention, based on the standard-reaching requirement of the water quality ofthe surface water, the water quality of the surface water is predicted based on the joint measures of the sewage interception for a small part of the directly discharged sewage and the ecological water supplement in the near future. Meanwhile, in the far future, the water quality of the surface water is predicted based on the sewage interception for most of the directly discharged sewage. In the near future, the directly discharged sewage of a certain proportion is connected into a sewage treatment system through a sewage connecting pipe. Meanwhile, the water quality of the surface water is enabled to reach the standard by combining the ecological water diversion means of the Binjiang water body. In the far future, most of the directly discharged sewage is directly connected into the sewage treatment system through deepening treatment. As a result, the water quality of the surface water can reach the standard.

The invention discloses a response analysis method for surface water quality to a climate change. The method is characterized by comprising the following steps of: 1, prediction of a future climate change factor change trend, 2, building and calibration of an SWAT model, 3, calculation of total nitrogen and total phosphorus, and 4, a response of the surface water quality to the climate change. Compared with the prior art, the method based on future climate prediction, the SWAT hydrological model and statistical analysis simulates influences on the surface water quality change by climate change factors such as temperature and rainfall through setting different temperature change scenes and rainfall change scenes, simulation study on the water quality influences by the climate change is developed with the SWAT hydrological model as a basis, a response relation between the climate change and the water quality change is built, and response analysis of the surface water quality to the climate change can be carried out. The method of the invention can be widely applied to response study on the surface water quality to the climate change, particularly response analysis of the surface water quality in Hetao areas to the climate change.

The invention discloses a reservoir water supply safety risk evaluation method based on reservoir inflow and water quality combined probability analysis. The invention relates to the field of surface water environment risk evaluation and research. The method comprises the following steps: (1) acquiring reservoir inflow water quality multi-year data, judging the change tendency of water quality and water quantity, and determining reservoir main pollutants and water change typical seasons; (2) determining edge probability distribution of the water quality and the water quantity respectively, and determining a water quality and water quantity combined probability function by adopting a Frank Copula model; (3) performing screen setting on the water quality and the water quantity of each section of the reservoir according to the surface water quality standard and a reservoir water supply quantity parameter, calculating the negative scene occurrence probability in the typical seasons by utilizing the combined probability function, and realizing risk evaluation on the reservoir water supply safety. The invention provides the method based on reservoir inflow and water quality combined probability analysis, the negative scene occurrence probability is determined, risk evaluation on reservoir water supply safety is realized, and scientific basis is provided for solving the problem of reservoir water supply safety.

The invention relates to a determination method for the maximum allowable input quantity of a nitrorgenous fertilizer in a watershed scale. The method comprises the following steps: (1) selecting a typical research region; (2) constructing a model of non-point source pollution of the typical research region and carrying out simulation verification; (3) establishing a response relationship between the input quantity of the nitrorgenous fertilizer and the output concentration of the nitrorgenous fertilizer; (4) affirmatively ensuring a safe total nitrogen concentration limiting value of quality of surface water in a target research region according to environmental planning and environmental partitioning water quality demands of the target research region; and (5) determining the maximum allowable input quantity of the nitrorgenous fertilizer of the target research region. The method provided by the invention has a very good application prospect in the technical field of prevention and control management of agricultural non-point source pollution in the watershed scale.

The invention provides an urban surface water quality analysis method. The method comprises the first step of presetting a water quality monitoring strategy and determining a monitoring site of surface water in each city according to the water quality monitoring strategy; the second step of detecting dissolved oxygen, chemical oxygen demand, ammonia and nitrogen and total phosphorus contained in unit volume water at each monitoring site and using four detection results as water quality data of the monitoring site; the third step of summarizing the water quality data of the monitoring site of each city and analyzing the water quality data of each city through a Nemerow index method to obtain a water pollution index of the city. According to the method, it is only needed to monitor the four indexes of dissolved oxygen, chemical oxygen demand, ammonia and nitrogen and total phosphorus in the urban surface water, and then the pollution conditions of the urban surface water can be evaluated. The urban surface water quality analysis method has a unified standard and is high in operability.

The invention discloses a surface water quality index prediction method and device based on a graph neural network. The method comprises the following steps: collecting and preprocessing water quality index monitoring data and weather data; contructing a station diagram based on geographic position data and hydrological data of a surface water quality index monitoring station, and performing parameter optimization on a water quality index prediction network composed of a diagram convolutional neural network, a sequence codec constructed based on LSTM and a multi-layer perceptron according to preprocessed water quality index monitoring data, weather data and the station diagram; after parameter optimization is finished, taking the water quality index prediction network with determined parameters as a water quality index prediction model; and utilizing the water quality index prediction model to realize water quality index prediction based on the preprocessed water quality index monitoring data and weather data. According to the method, the surface water quality index is predicted by combining a graph convolutional neural network and a sequence codec architecture, and the method has a wide application prospect in the fields of sanitation and health, environmental governance and the like.

The invention relates to a regional water environment intelligent management and control system based on a big data analysis strategy. The system comprises a big data analysis module, comprehensive GIS map module, the system comprises a distributed integrated sewage treatment facility module, a village and town center sewage treatment plant module, a water ecological treatment facility module, a surface water environment quality module, an operation strategy module, an expert diagnosis module, and a comprehensive management module, a production report module, a production monitoring module anda work order circulation module which serve user system management. A remote intelligent management mode is adopted. According to the invention, distributed sewage treatment facilities and water ecological purification facilities in one area can be remotely and intelligently controlled; meanwhile, the purification facilities and the real-time surface water quality of the area are operated in an associated mode, efficient and stable operation of the purification facilities in the area is supported through an operation strategy formed through several-year big data accumulation analysis and an expert diagnosis platform, prediction is conducted in time, and risk management and control are achieved.

The invention discloses an LCD (liquid crystal display) industrial wastewater advanced treatment technology. The LCD (liquid crystal display) industrial wastewater advanced treatment technology mainly comprises the following steps: carrying out pretreatment on LCD industrial wastewater by adopting a traditional water treatment technique; then putting the LCD industrial wastewater into a hydrolysis acidification pool so as to improve the biodegradability of wastewater; then guiding supernate into an ozone high-level oxidation reactor after the treatment by a BNR (Biological nutrient removal) unit, and removing low-concentration degradation-resistant organics in wastewater; and then, enabling yielding water of the ozone high-level oxidation reactor to flow through a BAF (biological aerated filter), an efficient settling pond, a micro filter chamber and a disinfecting tank. Degradation-resistant pollutants in the LCD industrial wastewater are decomposed so as to achieve the aim of water purification. The technology disclosed by the invention not only can be used for reducing the treatment and investment costs and the occupied areas, but also can be used for treating pollutants which cannot be removed by a traditional technology and performing advanced treatment on the LCD industrial wastewater; the water quality indexes of yielding water after treatment meet the IV-type surface water quality requirement of surface water environmental quality standards GB3838-2002, thus realizing harmless treatment and recycling of the industrial wastewater.

The invention relates to an in-situ water quality purification device. A water quality purification and repair technology mainly targets at urban inland rivers and small and medium-sized rivers in rural areas.The in-situ waterquality purification device comprises a float bowl, an elastic permeable frame, and a permeable pile fiber filter cloth, filler (honeycomb semi-soft filler or fiber-type softfiller), an aerator pipe buckle, a weight iron chain, a positioning ring, a floating block, and a plant system, the in-situ water quality purification device mainly targets at deteriorationand eutrophication of water quality in the urban inland rivers and the small and medium-sized rivers in the rural areas to provide a treatment technology for achieving surface water quality standards. The outstanding features and significant progress of the in-situ water quality purification device are mainly that the in-situ water quality purification effect can be greatly improved; seasonal water level change is not influential; the problem of underwater aerator pipe laying can be effectively solved; the fiber pile filter cloth is used for filtering and absorbing suspended particles in water, and thetransparency of a water body is greatly improved.

The invention discloses a method for online automatic detection of permanganate index in water. The method comprises the following steps: preparing a used reagent; finishing calibration of a standardcurve, and verifying the accuracy and repeatability of online automatic detection equipment and glucose test; manually testing different types of surface water and standard solutions thereof in a laboratory according to a national standard method to obtain permanganate indexes in the surface water; testing the corresponding surface water and the standard solution thereof by online automatic detection equipment to obtain absorbance; enabling the online automatic detection equipment to calculate permanganate indexes in different types of surface water according to the standard curve; and comparing a laboratory method with an automatic calculation method, calculating a relative error, and judging whether the relative error is within a standard requirement range. By using the method provided by the invention, the accuracy and repeatability of the online automatic detection equipment are good, the glucose test and the adding standard recovery rate meet the requirements, and the method has great significance for environmental protection in the field of online monitoring of surface water quality.

The invention relates to a multilayer bevel-plate sedimentation device with a variable interval and a variable flow direction, belonging to the field of water treatment. In the multilayer bevel-plate sedimentation device, bevel-plate components with different intervals are arranged in layers; the number of layers is three or more than three; the intervals of the bevel-plate components at a bottom layer are maximum; the intervals of the bevel-plate components at middle layers are gradually reduced from bottom to top; the intervals of the bevel-plate components at a top layer are minimum; an included angle between each layer of the bevel-plate components and a horizontal plane is 60-degree; the bevel-plate components at two adjacent layers are arranged along opposite directions; and the bevel-plate components at each layer are same in height within a scope of 300-500mm. The multilayer bevel-plate sedimentation device is excellent in draining effect, is capable of smoothly disposing spoil and avoiding blocking and is high in adaptability for various water qualities of surface water. A draining effect is below 2NTU. The multilayer bevel-plate sedimentation device is suitable for the field of water treatment.

The invention discloses a surface water quality monitoring result characterization method and a surface water quality monitoring result characterization system. The surface water quality monitoring result characterization system comprises a data platform and a server; the data platform is used for receiving a data acquisition instruction of the server and sending section basic information to the server; the server is used for sending a data obtaining instruction to obtain section basic information and processing the section basic information to obtain spatial data, and the spatial data comprises area bottom surface data, river surface data, lake and reservoir surface data, lake and reservoir label data, river label data and administrative division label data; and a water quality characterization result map is generated by using the spatial data and the water quality evaluation result data, wherein the water quality characterization result map comprises a river label, a lake and reservoir label, an administrative division label, rendered river surface data, rendered lake and reservoir surface data and regional bottom surface data from top to bottom. The invention has the technical effects that water quality rendering is performed on the spatial data, and the overall water quality condition of the river/lake and reservoir with the section is reflected.

The invention discloses an urban black and odorous water body identification method based on conventional water quality parameters. The method comprises the following steps of acquiring conventional water quality detection parameters of a water body, performing standardized calculation on the concentration of the conventional water quality detection parameters of the water body to obtain standardized water quality detection parameters, according to the standardized water quality detection parameters, obtaining a water body black and odorous grade of the corresponding water quality detection time period, establishing a factor analysis model, wherein the factor analysis model comprises blackening common factors and odor common factors, establishing a water body identification decision-making tree model through the blackening common factor and the odor common factor, and then judging the black and odor condition of the water body through the water body identification decision-making tree model to obtain an identification result. According to the method, an existing surface water quality monitoring system is fully utilized, black and odorous water body distinguishing is achieved on the premise that cost is not increased, and the method has high feasibility and economical efficiency and can be widely applied and popularized.

The invention provides an Aquamats ecological ditch sewage treatment device. The domestic sewage is treated by a partition water inflow-type D-A<2>O sewage treatment device; the effluent quality after the treatment can reach between the first-class A standard of municipal wastewater discharge standard and the V type of surface water quality; on the basis, the effluent is further treated by an Aquamats ecological ditch reactor; after the treatment, the effluent quality can stably reach the IV-type water quality standard of surface water quality. The device provided by the invention does not increase the floor area, realizes a relatively good sewage treatment effect in the condition of slightly increasing the capital investment, achieves an aim of direct discharge or recycling, and has a board prospect in market popularization and application.