33 results about "River health" patented technology

The invention provides a method for determining a dynamic water quality target of an urban river section, which belongs to the field of water environment treatment. The method provided by the invention comprises the steps that a an indicator framework system which affects the determining of the water quality target of the urban river section is established; b an analytic hierarchy process is usedto judge the importance of indicators and analyze and calculate the weights of the indicators; c graded quantitative evaluation is carried out individual evaluation indicators; and d a weighted average method is used to calculate the comprehensive score of an indicator set to determine high, medium and low water quality target levels. According to the invention, a conventional method for determining the water quality target of an urban river based on functional requirements is optimized; a watershed manager can formulate the water quality target of the river according to hydrological and hydraulic conditions, water quality conditions, functional needs and other different characteristics of the river, so that the target determination is more reasonable and feasible; and the method can be used by urban river health evaluation, ecological evaluation, water environment carrying capacity evaluation and other evaluations for reference, and has good versatility.

The invention discloses a river health assessment system, comprising a monitoring device, a terminal device and a server; the monitoring device comprises a fish and a chip; the chip comprises a detection unit and a communication unit; the detection unit is used for detecting positioning data and water quality data; the detection unit is used for generating corresponding color data according to thewater quality data; the server comprises an image display module, a communication module and a control scheme module; the image display module is used for generating image data of a polluted area marked on a map according to the positioning data and the color data; the control scheme module is used for generating a control scheme according to pollution level data and controlling the starting andstopping of a control terminal; and the terminal device comprises a water hardness regulating device, a ph value regulating device, an oxygen feeding device and a display. The chip is injected into the body of the fish, the water quality data of a river is monitored by virtue of the characteristics of random walking wide coverage range of the fish, and a polluted position is determined and precisely treated, so that the pollution treatment efficiency is increased.

The invention provides a river health evaluation method and evaluation device. The method comprises the following steps: collecting the hydrological parameters of a to-be-evaluated river in set time periods, wherein the hydrological parameters comprise the flow rates and water temperature of the river, the amounts of precipitation and air temperature; subjecting the flow rate and the precipitationamount in a first time period to fitting so as to obtain a first fitting coefficient; subjecting the flow rate and the precipitation amount in a second time period to fitting so as to obtain a secondfitting coefficient; subjecting the water temperature and the air temperature in the first time period to fitting so as to obtain a third fitting coefficient; subjecting the water temperature and theair temperature in the second time period to fitting so as to obtain a fourth fitting coefficient; determining the flow rate variation coefficient of the to-be-evaluated river in the set time periodsaccording to the first fitting coefficient and the second fitting coefficient; determining the water temperature variation coefficient of the to-be-evaluated river in the set time periods according to the third fitting coefficient and the fourth fitting coefficient; and evaluating the health level of the to-be-evaluated river according to the flow rate variation coefficient and the water temperature variation coefficient. The river health evaluation method and evaluation device of the invention can evaluate the health level of a dam-free river.

The invention relates to a method for evaluating the environmental flow of river water-reduced reaches based on the P / R value of benthic microorganisms. First, the P / R value of the benthic microbial community of the river is analyzed and measured, and then the P / R value of benthic microorganisms is reduced according to the flow gradient and the P / R of benthic microorganisms is determined. The response relationship between the P / R values ​​of benthic microorganisms and the flow rate was established, and then the threshold relationship between the P / R value of benthic microorganisms and flow changes was sought, and the river health status and flow reduction range were set accordingly. corresponding relationship. Combined with the health assessment criteria based on the microbial P / R value, an assessment method of environmental flow that can characterize the ecological health of the river is finally formed. Advantages: the method of the invention is novel and unique, rapid in evaluation, and can be measured on site. It is an environmental flow calculation method based on functional requirements, has universal adaptability to various special river habitats, and can promote the healthy development of river ecosystems under hydropower development. .

The invention relates to a method for evaluating the environmental flow of a water-reduced section of a river based on the carbon metabolism rate. First, the carbon metabolism capacity of the microbial community in the river sediment is analyzed and measured, and then the response relationship between the flow gradient reduction and the microbial carbon metabolism rate is determined. , establishes the rate of microbial carbon metabolism k Quantify the relationship with the flow, and then construct the microbial carbon metabolism rate k The threshold relationship between the flow and the flow, according to which the corresponding relationship between the river health and the flow reduction range is set. Combined with the health assessment criteria based on the rate of microbial carbon metabolism, an environmental flow assessment method for the health of source rivers is finally formed. Advantages: The method of the invention is novel and unique, and the evaluation is fast. It is an environmental flow calculation method based on functional requirements, which can effectively solve the problem of evaluating the environmental flow of rivers in source areas with special habitats, and promote the healthy development of river ecosystems under hydropower development.

The present disclosure relates to a watershed-based river health evaluation method and device. The method includes: obtaining index data of multiple evaluation indicators of river health in the watershed within a preset time period; The probability function distribution of the value; according to the probability function distribution of the value of each evaluation index, calculate the information entropy value corresponding to the evaluation index; use the preset correction algorithm to correct the information entropy value to obtain the corrected information entropy value; calculate according to the corrected information entropy value of each evaluation index and the number of evaluation indexes, and obtain the information entropy weight corresponding to the evaluation index; according to the corrected information entropy value of each evaluation index and the corresponding information entropy weight, calculate The river health index of the basin; analyze the river health index and evaluate the development trend of river health. Through this technical solution, the river health index is obtained through entropy weight analysis and calculation, which provides a scientific basis for the decision-making of river basin system governance.

The invention discloses a river ecosystem health monitoring and evaluation method and system. The method comprises the following steps: collecting river ecological indicators according to a predetermined time, constructing an ecological index matrix; constructing a river health evaluation module based on a river biological environment adaptability curve; Construct a pressure-state-response model; based on the ecological index matrix, and through the river health evaluation module and the pressure-state-response model, calculate the health value of the river ecosystem. The technical scheme of the invention can solve the problem of heavy collection workload and difficult collection in some areas. Through the intelligent collection system and method, the workload of collection can be greatly reduced, and the efficiency of collection, monitoring and evaluation can be improved.

The invention discloses an in-situ real-time intelligent biological detection device for protecting the river health. The device comprises an electronic cabin, a sampler mounted below the electronic cabin, and a sampling net mounted below the sampler, wherein a river water power and water quality information real-time acquisition device is mounted above the electronic cabin; a storage battery, a motor, a high-pressure pump, a microprocessor and a data memory card are mounted in the electronic cabin; a high-pressure water gun connected with the high-pressure pump is mounted on the inner wall of the sampler; an image identification system controlled by a microprocessor is mounted at the top of the sampler; the bottom of the sampler is in an open structure and is connected with the sampling net through a traction rope; the sampling net comprises a side net capable of stretching and contracting up and down and a turnable bottom net nested at the bottom of the side net. The invention further discloses an in-situ real-time intelligent biological detection method for protecting the river health, and the variety, the number and the size information of indicator organisms on an in-situ riverbed of a river can be continuously, automatically and intelligently detected on the premise of not destroying a river bottom substrate ecological environment.

The invention discloses a bottom protection soft mattress with disk-shaped concrete blocks tied. The bottom protection soft mattress with the disk-shaped concrete blocks tied comprises a mattress pad and pressure carriers; the pressure carriers are the disk-shaped concrete blocks; hollow circular truncated cone structures are adopted for the disk-shaped concrete blocks; the side wall inclination angle of each hollow circular truncated cone structure is smaller than or equal to 45 degrees; tying bar penetrating holes are formed in the side walls of the hollow circular truncated cone structures; and the disk-shaped concrete blocks are tied and connected to the mattress pad through tying bars. According to the bottom protection soft mattress with the disk-shaped concrete blocks tied, the disk-shaped concrete blocks with the hollow structures are adopted as the pressure carriers, in the using period, nearby the bottom protection soft mattress with the disk-shaped concrete blocks tied, because of the turbulent flow effect and the hollow structures of the disk-shaped concrete blocks, silt in suspension movement easily enters the pressure carriers to be accumulated, a good flowing speed gradient and a good silt environment are created in the pressure carriers, a natural shelter is provided for aquatic organisms, the local ecological environment can be effectively improved, and biodiversity and river health are facilitated; and meanwhile, engineering materials can be saved through the bottom protection soft mattress with the disk-shaped concrete blocks tied, and higher anti-lifting stability and higher anti-sliding stability are achieved.