134 results about "River quality" patented technology

The invention discloses a method for control and treatment of water pollution of a black and odorous river. The method includes following steps: S1, dividing key river reaches or control units; S2, calculating water environment characteristics, and determining water quality targets of the control units; S3, calculating the water environment capacity and pollution load accounting according to the water quality targets; S4, distributing the pollution load cutting amount to each control unit; and S5, performing overall treatment layout, establishing a river water quality process model, putting treatment information into the model, inspecting whether the water quality targets reach the standard, if not, repeating the steps of S1-S5 until the water quality reaches the standard, and if yes, applying the method to practical water pollution treatment of black and odorous rivers. According to the method, the problem of treatment of the black and odorous water body is accurately quantified, key chemical indexes which cause the water body to become black and odorous are extracted, the setting of each treatment project and the specific project amount can be guided through quantitative calculation, and the project management is more accurate and economic.

The invention discloses an analysis method for identifying main influence factors on water qualities of rivers flowing into the Tai Lake on the basis of a PSO (Particle Swarm Optimization) and SVM (Support Vector Machine) hybrid algorithm and belongs to the technical field of water quality monitoring. In the method, a PSO algorithm is combined with an SVM algorithm; the PSO algorithm is used for optimizing parameters c and g of the SVM algorithm so as to rapidly and efficiently determine global optimums of the c and the g; and based on the optimized c and g, the SVM algorithm predicts different water qualities by using masses of influence factors influencing the water qualities as eigenvectors and identifies and determines the main influence factors on the water qualities of the rivers flowing into the Tai Lake through the predictive rate. By the method, the main influence factors can be accurately identified from various influence factors influencing the water qualities so as to provide beneficial proofs for monitoring early-warning of the water qualities of the rivers.

The invention aims to provide a river water quality prediction method. The method includes the steps that a specific boundary of a to-be-predicted river is depicted; a .kml format file of the predicted river boundary is converted into a point; the WGS 1984 coordinates of the point are converted into coordinates with meter as the unit; the converted to-be-predicted river boundary point position coordinates are stored; grid division is carried out on the predicted river by using CVLGrid1.0 software, and the divided predicted river grid is exported; a grid file of the to-be-predicted river is imported into an EFDC-Explorer; on the basis of establishing a hydrodynamic model, a water quality model of the predicted river is established; real-time monitored flow and water quality data of the flow boundary of the predicted river are imported into the water quality model, the water quality distribution situation of the to-be-predicted river is simulated within a period of time, and water quality prediction of the to-be-predicted river is achieved. The method is unique, easy to operate and apply, accurate in prediction effect and beneficial to ecological environment protection of rivers, and has remarkable economic and social benefits.

The invention belongs to the technical field of an environment protection technology, and particularly relates to a method for repairing the water quality of river based on a system coupling mode. According to the method, a river bank vegetation belt system, a multifunctional pond system and a riverway bottomland micro-landform transforming system can be organically coupled with one another, so that a coupling match system can be formed. Compared with a single subsystem, the coupling match system is more complex in inner tissue and more reasonable in structure, and has the functions of strengthening the whole function of the system and amplifying the whole benefit of the system; and the water quality of the river, the structure of a river ecosystem, the quality of the biological habitat and the whole current situation of the biological environment can be effectively improved, and the physical, chemical and biological integrity of the river ecosystem can be enhanced, so that the methodis a river repairing mode 'which is near to the nature, multifunctional, high in benefit and sustainable'. The water resource can be sufficiently used, the economic benefit can be increased, and the contradiction between the environmental protection and the economic growth in the wide rural area can be effectively remitted.

The invention discloses a river water quality rapid monitoring system based on an unmanned aerial vehicle hyperspectral image. The river water quality rapid monitoring system comprises an unmanned aerial vehicle hyperspectral system, a hyperspectral water quality index inversion model and a hyperspectral water pollution monitoring system. River water body hyperspectral images are obtained throughaerial photography of an unmanned aerial vehicle carrying a micro hyperspectral instrument, and are processed into water body reflectivity images through an image preprocessing system; river water samples are collected and tested to obtain river water sample water quality, and meanwhile, each pollutant concentration water sample is prepared manually in a laboratory; characteristic waveband combinations are selected as related variables for different water quality indexes, and a model for inverting the water quality according to water body spectral information is established; and the unmanned aerial vehicle water body reflectivity images are imported into the water quality inversion model, and calculating is carried out to obtain a water quality index concentration distribution diagram. Thewater quality indexes which can be monitored comprise total phosphorus, ammonia nitrogen, chlorophyll a, COD, BOD5 and turbidity, thereby helping an environmental protection department to know the overall water quality condition and pollution distribution of a river; and the water quality monitoring cost of a water area per unit area is relatively low, and the monitoring efficiency is relativelyhigh.

The invention belongs to the technical field of water environment protection, and particularly relates to a multi-estuary medium and small watershed water quality standard-reaching dynamic water supplementing amount prediction method. The method comprises the following steps: analyzing pollution characteristics of medium and small rivers, and selecting key control indexes; based on EXCEL software,establishing a multi-reach basin high-precision dynamic water quality prediction model with a one-dimensional water quality model and a complete mixing model coupled, and calibrating model parametersaccording to online monitoring data and manual monitoring data; and predicting the water supplementing time and the water supplementing amount. According to the method, the online data and the waterquality prediction models of two pollutants are used for mutual verification, so that the accuracy of the models is improved. According to a quantitative response relationship between the river waterquality and the water replenishing amount established by the method, dynamic matching between a current water quality situation and the optimal water replenishing amount can be realized, and the problems of water resource waste or incapability of meeting the water quality standard, incapability of meeting the requirements of environmental managers and the like caused by non-real-time updating of the water replenishing amount are solved.

The invention discloses a river-oriented multi-unmanned aerial vehicle water quality sampling and monitoring path optimization method. According to the method, an objective function and constraint conditions are constructed for specific problems of river water quality sampling and monitoring, and the shortest total length of monitoring paths of all unmanned aerial vehicles and optimization of the number of the unmanned aerial vehicles are considered in the objective function; the specific constraint conditions comprise endurance time limitation of a single unmanned aerial vehicle, limitation of the number of sampling vertical lines on hovering time, limitation of the number of sampling points on the sampling vertical lines on the hovering time, limitation of pollutant types monitored by the sampling points on the hovering time, and difference limitation of flight and hovering unit energy consumption of the unmanned aerial vehicle, and limitation of unmanned aerial vehicle takeoff and landing bases distributed on left and right banks of river. Then the planning model is optimized by adopting the multi-filial-generation discrete cuckoo algorithm. According to the method, an optimal multi-unmanned aerial vehicle water quality sampling and monitoring path can be quickly calculated for a specific river water area environment.

The embodiment of the invention provides a water quality simulation method for river basins. The method comprises the following steps: dividing a river basin into a plurality of sub-basins, and acquiring data of each sub-basin in a specified time range; Taking the rainfall capacity and the potential evaporation capacity of each sub-basin as first input parameters, determining the effective rainfall capacity of each sub-basin through a nonlinear module of the hydrological model, taking the effective rainfall capacity of each sub-basin as second input parameters, and determining the non-point source runoff of each sub-basin through the linear module of the hydrological model; And taking the non-point source runoff volume, the temperature, the water quality detection value and the river hydrological data of each sub-basin as third input parameters, and obtaining a water quality simulation result of the river basin through a water quality analysis model. The embodiment of the invention further provides a water quality simulation system for the river basin. According to the embodiment of the invention, the influence of non-point source pollution on river water quality is considered in water quality simulation, and the accuracy of water quality prediction is improved.

A river water quality mobile supervision system comprises a river water quality monitoring point, a monitoring terminal device, a communication network module and a monitoring center station, the river water quality monitoring point is in communication connection with the monitoring terminal device, and the monitoring terminal device is in communication connection with the monitoring center station through the communication network module; and physical and chemical parameters related to water quality are collected by water quality sensors at river water quality monitoring points and are transmitted to monitoring terminal equipment through communication interfaces of the monitors. According to the invention, on-line monitoring is carried out on riverway water quality; the monitoring data comprises seven parameters of pH, total phosphorus, dissolved oxygen, conductivity, turbidity, UV-COD and ammonia nitrogen; data is finally transmitted to the monitoring center station through a GPRS / 4Gnetwork, so that the river water quality can be evaluated, whether the river is polluted or not and the property and degree of pollutants can be determined, effective measures can be taken in time, the river water quality can be monitored in real time, and the accuracy of river water quality monitoring is guaranteed.

The invention relates to water quality detection equipment for water conservancy, in particular to river water quality detection and sampling equipment for water conservancy projects. The technical problem of the invention is to provide river water quality detection and sampling equipment for water conservancy projects, which can sample water of different depths and improve the accuracy of river water detection. The river water quality detection and sampling equipment for water conservancy projects comprises a bottom plate, a collection box, a support plate, a piston cylinder, a first one-wayvalve, a water delivery pipe, a spray head, a second one-way valve, a hose, a piston block, a first bearing seat and the like, wherein the collection box is placed on the right side of the bottom plate; the support plate is connected to the middle part of the upper side of the bottom plate; the piston cylinder is connected to the lower part of left side of the support plate; and and the first one-way valve is connected to the right part of the lower side of the piston cylinder. A filter screen of the river water quality detection and sampling equipment provided by the invention penetrates intodifferent depths in a river, and can sample river water of different depths, thereby improving the detection accuracy of river water; and the arrangement of a ratchet wheel and a cone block can indirectly sample river water.