18 results about "Water scarcity" patented technology

The invention is applicable to the technical field of sunlight utilization and wastewater treatment, and provides a preparation method and application of a photo-thermal-photocatalytic solar interface evaporator. According to the method, alkalized polyacrylonitrile aerogel is used as a matrix framework, BiOI-Bi-Bi2O3 composite particles are used as main photo-thermal-photocatalytic functional materials, and the photo-thermal-photocatalytic solar interface evaporator is prepared. And the single layer of Ti < 3 > C < 2 > T < x > MXene is used as a synergistic photo-thermal and photo-photocatalytic auxiliary agent. According to the prepared composite aerogel, BiOI, Bi2O3 and Bi are combined to form a stable interface heterostructure, and meanwhile, full-wave-band efficient utilization of a solar spectrum is realized by utilizing single-layer Ti < 3 > C < 2 > T < x > MXene. The evaporator can be used for effectively treating a water source containing complex pollutants and synchronously realizing desalination and deep purification. The evaporator has remarkable effects in the aspects of improving the photo-thermal conversion efficiency, optimizing the evaporation process and the resource utilization rate, protecting the environment, saving energy and the like, and has wide application prospects in the aspects of water resource shortage and water environment pollution.

The application discloses an adaptive method for relieving double risks of water quality and water quantity of agriculture, and belongs to the technical field of water resource management.The method is based on a farmland soil nitrogen balance and hydrodynamics coupling model, quantifies a pollution emission list of subdivided sources in the growth process of specific crops, and simulates agricultural pollution dilution water quantity; a crop water requirement model is used to calculate irrigation water consumption of the specific crops in the whole growth period; a water resource loss evaluation module is established to evaluate potential agricultural yield reduction and economic loss caused by water resource shortage; a scenario library of water and fertilizer coordination strategies is constructed to compare the relieving effects of different adaptive strategies on water quantity depletion type and water quality pollution type water resource risks.The application solves the technical problem that it is difficult to simultaneously cope with water quantity risks and water quality risks to develop targeted adaptive strategies, can effectively relieve water resource pressure, improve the sustainability of agricultural production, realize optimal allocation of water resources, and further guarantee the health of an ecological system.

The invention discloses a liquid energetic material composed of non-dangerous chemical raw materials and a preparation method of the liquid energetic material, the liquid energetic material is formed by mixing an oxidizing agent concentrated solution and glycerin in proportion, and the oxidizing agent concentrated solution is obtained by mixing calcium ammonium nitrate, ammonium carbonate and water in proportion and then conducting filtration and vacuum concentration. According to the invention, the prior art is greatly improved, and the three raw materials are all non-dangerous chemicals, so that the traffic and storage safety in the long-time land and marine transportation process in the offshore oilfield operation can be greatly improved; the mode of obtaining the liquid energetic material on site is simple, and seamless butt joint operation with existing liquid gunpowder deflagration fracturing can be achieved; the influence of temperature on solubility is overcome, the composition proportion is moderate, the system can be completely dissolved after being prepared, the operation water adding amount is reduced by utilizing crystal water in the raw materials, and the preparation method is suitable for the environment in shortage of water resources.

The application discloses a kind of reservoir water resource optimal allocation method based on multi-stage multi-objective belonging to water resource management technical field, comprising the following steps: A, predict the water resource demand, water resource available quantity, social economy and other basic data in basin;B, with the maximum unit water resource utilization benefit as target, with reservoir water balance, irrigation and power generation water demand, salinity leaching and so on as constraint condition, construct water resource optimal allocation model;C, coupling fixed combination stochastic programming and fractional programming method is solved to model, according to the water resource shortage obtained under different probability level arrangement production to reach maximum unit allocation water benefit.The application fully considers the necessity of joint management of upstream hydropower generation and downstream agricultural irrigation in reservoir management system, reasonably allocates water resources, land resources and energy in the basin, obtains the maximum unit allocation water benefit, so as to relieve water contradiction and improve the utilization efficiency of resources.

The invention belongs to the technical field of industrial sewage treatment, and provides a multi-water-source coupling application method for wastewater reuse, which comprises the following steps: balancing municipal sewage multi-point introduction load, blending reclaimed water with new water, online cleaning and ultrafiltration during immersion, online cleaning of a reverse osmosis membrane and online sterilization of the reverse osmosis membrane. The application of the method relieves the restriction of water resource shortage on sustainable development of companies; meanwhile, the situations of shortage of urban water resources and serious water area pollution can be relieved, co-fusion development of cities and enterprises is achieved, a new sustainable development way is developed for green development of iron and steel enterprises and comprehensive utilization of water resources, and wide popularization prospects and profound social significance are achieved.

This application discloses a method and system for intelligent scheduling of irrigation pipe networks based on a hydraulic model. By constructing a hydraulic irrigation simulation model, it is possible to simulate the hydraulic behavior of the pipe network under different operating scenarios, thereby achieving accurate simulation and prediction of the hydraulic behavior within the irrigation pipe network. On this basis, based on the type of crops in the target area and their water requirements during their growth cycle, and with the goal of optimizing water supply quality, an optimization objective function for intelligent scheduling of the irrigation pipe network is established. Not only is the minimum absolute error between the actual irrigation volume and the theoretical water demand considered, but key conditions such as water supply constraints, head valve working pressure constraints, and pipeline pressure constraints are also incorporated to ensure the scientific nature and rationality of irrigation scheduling. Therefore, it can significantly improve irrigation efficiency, save water resources, promote the healthy growth of crops, and provide effective technical support for solving problems such as water resource shortages and poor irrigation management in modern agriculture.

The invention provides a regional water ecological bearing capacity evaluation method and system, and relates to the technical field of regional water ecological bearing capacity evaluation.A to-be-monitored region is divided into three core subsystems including a water resource utilization subsystem, a carbon sink capacity subsystem and an energy consumption subsystem, a multi-dimensional coupling matrix is constructed, the mutual relation between the subsystems is quantified, and the water ecological bearing capacity is evaluated. Therefore, complex feedback among water resources, carbon sink and energy is revealed, the linkage effect of water resource shortage on the vegetation carbon sequestration amount and energy production is simulated through a system dynamics model, historical data calibration and real-time monitoring data dynamic correction are combined, and the accuracy and timeliness of the model are ensured; setting a reference threshold value based on the historical bearing capacity, and dynamically adjusting through a correction formula to form a real-time bearing capacity threshold value; and finally, calculating a comprehensive coordination degree, comparing the comprehensive coordination degree with a dynamic bearing capacity threshold value, dividing bearing capacity grades, and triggering early warning when the bearing capacity is close to or exceeds the threshold value.

The utility model discloses a rainwater collecting and irrigating device for a loess plateau. The rainwater collecting and irrigating device mainly solves the problems of water and soil loss, water scarcity and agricultural irrigation in specific areas. Comprising a rainwater collecting shed, a power supply system, a filtering unit, a water storage tank, a micro water pump and a water dropper, wherein the rainwater collecting shed is connected with the water storage tank through a central pipeline, the micro water pump is mounted in the water storage tank, and a water outlet of the micro water pump is connected with the dripper through a bent water pipe extending to the ground; large-range coverage is formed in the loess plateau area through a rainwater collection greenhouse, and water and soil are kept after the greenhouse is made of a net-shaped water-permeable material to weaken the impact force of rainstorm; the collected rainwater is filtered and then collected to the water storage system; and meanwhile, a power supply system is arranged outside the device, so that integration and automation of the whole device are realized. According to the regional characteristics of the loess plateau area, the utilization rate of natural water resources in the loess plateau area can be effectively increased.

The present application relates to a kind of integrated joint deployment method of pan-basin water network system based on subsequent water source water supply. Including analysis is included in pan-basin water network system water transfer project and water supply project, construct integrated water network system;Pan-basin supply-demand relationship analysis is carried out in layers and grades, according to the composition and positional relationship of the pan-basin water network system Direct object and indirect object of subsequent water source water supply object are determined, and the water supply amount of each water supply object is determined;Pan-basin water network system integrated joint deployment model of subsequent water source water supply is constructed, and target function and constraint condition are set in layers and grades;Layered and graded scheduling rule system is formulated, and scheduling rules are formulated respectively;The pan-basin water network system integrated joint deployment model is optimized and solved based on the scheduling rule system, and the pan-basin water network system integrated joint deployment scheme is obtained.The present application realizes the further improvement of water resource shortage condition, and water resources are coordinated in a larger range and higher level pan-basin.

1. Name of the design product: Waterless ice freezing environment-friendly toilet. 2. Use of the design product: To solve the health needs in water resource shortage, ecologically sensitive areas, extreme climate, temporary sites, mobile scenarios. 3. Design points of the design product: In shape. 4. Pictures or photos best indicating the design points: Perspective view 1.

The utility model relates to the technical field of water treatment, and discloses a purification water maker utilizing air to make water, which comprises a casing, a compressor is mounted on one side in the casing, a source water tank is arranged on one side of the compressor, a water tank is arranged above the source water tank, the water tank is communicated with the source water tank through a connecting pipe, and a condenser is arranged at the upper end of the water tank. A turbine exhaust fan is arranged on one side of the condenser, a reverse osmosis filtering water purification assembly is installed in the machine shell, and a water pump is installed in the machine shell; according to the air water-making purification water-making machine, the mode of combining the compressor and the condenser is adopted, the condensation efficiency of water in air is improved, the water quality safety is ensured through the reverse osmosis filtering technology, the problem of shortage of water resources can be effectively solved, the utilization efficiency of the water resources is improved, and meanwhile it is ensured that drinking water is safe and reliable in quality; the water dispenser is compact in structure, easy and convenient to operate, energy-saving, environment-friendly and suitable for drinking water supply of families, offices and water-deficient areas.

The invention relates to the technical field of irrigation, in particular to an intensive high-pressure water-saving irrigation method, which integrates water resources through unified management, improves the utilization rate of the water resources, reduces the waste of the water resources and realizes reasonable utilization of the water resources. The relation between economic development and water resource utilization is coordinated, an optimal scheduling scheme of a water supply system and a small agricultural irrigation reservoir is formulated, and water resources are scientifically distributed. A fundamental way for solving the problem of water resource shortage is adopted, a small agricultural irrigation reservoir for combining electromechanical wells is used for irrigating the land, and a high-quality farmland is built. Strengthening of water resource management is an urgent need for promoting stable and fast economic development, the principle of sufficient water supply and water saving is implemented, the maintenance of the stable and fast economic development is taken as the primary task of current work, and the sustainable development of water resources is integrated.

The application provides a water resource shortage risk prediction method and device and electronic equipment, and relates to the technical field of water conservancy. The method comprises the following steps: acquiring a historical runoff sequence of a target river basin; determining a threshold runoff according to the historical runoff sequence; fitting the historical runoff sequence by using a generalized additivity GAMLSS model to determine a probability distribution function; and determining a first calculation result according to the probability distribution function, wherein the first calculation result represents a predicted value of the number of years from a calculation year to the first time when the runoff is lower than the threshold runoff. The embodiment of the application can predict the predicted value of the year of water resource shortage, thereby improving the evaluation effect of the water resource shortage risk.

The invention belongs to the technical field of rainwater treatment, and particularly relates to an ecological stone beach rainwater treatment structure with multi-stage energy dissipation and filtering functions, which comprises an ecological stone beach structure, and a rainwater collection hopper, a multi-stage energy dissipation layer, a composite filtering layer, an ecological purification layer and a drainage layer are arranged on one side of the ecological stone beach structure from top to bottom; mechanical linkage is driven through rainwater gravity, full-automatic cleaning of the filter screen is achieved, external power is not needed, the pain points that a filter screen of a traditional structure is prone to being blocked and manual cleaning is frequent are thoroughly solved, a three-stage system of multi-stage energy dissipation, composite filtering and ecological purification is adopted, the multi-stage energy dissipation layer reduces rainwater kinetic energy through gradient gravels and a perforated partition plate, and the energy dissipation efficiency is improved. The composite filter layer cooperatively intercepts pollutants, the ecological purification layer performs deep purification by virtue of a microbial carrier and aquatic plants, and effluent meets the water requirement of a landscape environment and can be directly recycled, so that the rainwater treatment efficiency and the long-term stability of the structure are improved, the operation and maintenance cost is reduced, and the pressure of water resource shortage is relieved.

The invention relates to a flooding basin water network system integrated joint allocation method based on subsequent water source water supplement. Comprising the following steps: analyzing a water transfer project and a water replenishing project brought into a flooding basin water network system, and constructing an integrated water network system; performing flooding basin supply-demand relationship analysis in a layered and graded manner, determining direct objects and indirect objects of subsequent water source water replenishing objects according to the composition and position relationship of the flooding basin water network system, and determining the water replenishing amount of each water replenishing object; constructing a flooding basin water network system integrated joint deployment model of subsequent water source water supplement, and setting an objective function and constraint conditions in a layered and graded manner; formulating a scheduling rule system in a layered and graded manner, and formulating scheduling rules respectively; and based on the scheduling rule system, carrying out optimization solution on the integrated and combined deployment model of the flooding basin water network system to obtain an integrated and combined deployment scheme of the flooding basin water network system. According to the method, the water resource shortage condition is further improved, and water resources are cooperatively allocated in a wider range and a higher level in a flooding basin.

The present disclosure discloses a method of reducing regional water scarcity risk. The method includes obtaining the water scarcity probability of each region, and obtaining the water scarcity risk of each sector in each region calculated based on the water resource dependence of each sector in each region and combining the water scarcity probability of each region; according to the water scarcity risk of each sector and based on a multi-regional input-output model, constructing a hidden water scarcity risk transfer matrix; based on the structural path analysis and the hidden water scarcity risk transfer matrix, identifying the critical transmission path of the hidden water scarcity risk, and constructing a hidden water scarcity risk transmission network; identifying a critical intermediate node in the hidden water scarcity risk transmission network based on the betweenness centrality algorithm

The utility model discloses cement plant process water treatment desalted water equipment which comprises a box-shaped main body, a heat conducting plate is obliquely and fixedly arranged on the surface of the inner side of the main body, the heat conducting plate divides the interior of the main body into a preheating box on the upper side and an evaporation box on the lower side, and a water inlet pipe is arranged on the upper surface of the preheating box. A conduit is arranged at the lower part of the side surface of the preheating box close to the lowest end of the heat-conducting plate, and the other end of the conduit is communicated with the highest end of the side surface of the evaporation box close to the heat-conducting plate; a heating device is installed in the evaporation box, and a liquid collecting hopper is installed on the side surface of the evaporation box close to the lowest end of the heat conduction plate and communicated with a water drainage pipe. The equipment can relieve the shortage of water resources, directly utilizes local brackish water resources in water-deficient areas, reduces the dependence on fresh water resources, and is particularly suitable for arid areas such as northwest and North China. Meanwhile, pollution to soil and underground water caused by direct discharge of high-salinity water can be reduced, and the environmental protection policy requirements are met.

The invention relates to an environment-friendly and energy-saving water supply and drainage cyclic utilization method. The method comprises the following steps: collecting rainwater, domestic sewage and industrial recoverable wastewater into a raw water collection tank; large-particle impurities in raw water are removed through the grating and the filter screen; introducing the preliminarily filtered water into a biological reaction tank; carrying out deep purification by adopting a membrane separation technology and an adsorption process; detecting water quality indexes of the purified water, adding chemical agents according to purposes, and blending to corresponding standards; and recycling the reclaimed water reaching the standard. The system has the beneficial effects that through cyclic utilization, the utilization rate of water resources is greatly increased, exploitation of fresh water resources is reduced, and the problem of shortage of urban water resources is effectively relieved.