79 results about "Ground water quality" patented technology

The invention provides a comprehensive underground water quality early warning method. The method comprises the steps that underground water quality situation early warning is conducted on the basis of monitored underground water quality situation data by adopting an improved Nemerow comprehensive evaluation index method, underground water quality trend early warning is conducted by adopting an underground water flow model and a solute transport model which are built through Visual MODFLOW software, and a water quality situation early warning result and a water quality trend early warning result are superposed through a matrix method to determine the comprehensive underground water quality early warning degree. According to the method, comprehensive underground water quality early warning can be effectively conducted, and a reliable scientific basis is provided for the government department to develop underground water pollution prevention work.

The invention discloses a free-float-type underground water quality online intelligent monitoring device which comprises a lifting support, a float device, a fixed pulley block, a counterweight disc, a control box, a cable location card and a power distribution box. An interaction fixed pulley block is arranged at the top of the lifting support, and a three-point-type lifting rope is arranged on the float device and is connected with the counterweight disc through the interaction fixed pulley bock. The fixed pulley block can be adjusted automatically and manually. The device adopts the simple dynamic balancing principle, and is simple in manufacture, small in occupation, capable of being disassembled and assembled quickly and high in practicability. A support installation mode is adopted to replace the station house type device installation mode, and a probe adopts the free float type probe, so that pollution substances in underground water including light non-aqueous liquid LNAPLs can be monitored accurately and timely in real time. Unattended operation is achieved, a sensor is not affected by external environment, the analyzing process is safe, accurate and reliable, a pollution source can be found favorably as early as possible, and the pollution source can be achieved. The online intelligent monitoring device can achieve well social benefit, environment benefit and economical benefit.

The invention provides an intelligent groundwater monitoring system and method for shale gas development, and the system comprises groundwater monitoring equipment and background monitoring equipment,wherein the groundwater monitoring equipment is integrated with a water level sensor, a PH value sensor, a conductivity sensor and a degree of mineralization sensor; the groundwater monitoring equipment is configured to collect the water level, PH value, conductivity and degree of mineralization of the groundwater in a shale gas development area, and transmit the data to the background monitoringequipment; and the background monitoring equipment is configured to obtain a water quality pollution probability curve by fitting according to the historical key index parameters, historical production information, historical groundwater water quality pollution accident information, key index parameters of groundwater and the current working condition information, and analyze the water quality pollution condition of groundwater according to the water quality pollution probability curve. The groundwater monitoring equipment adopted by the solution is integrated with the water level sensor, thePH value sensor, the conductivity sensor and the degree of mineralization sensor, and solves the technical defect of single parameter of the existing groundwater monitoring equipment.

The invention discloses an underground water quality analysis and evaluation system and method based on the Internet of Things. The method comprises the steps that lead, selenium and arsenic water quality monitoring data of underground water and basic hydrogeological information of a target aquifer are acquired through the Internet of Things; establishing a comparison and selection model of the key indexes; constructing a hydrogeological comprehensive model, evaluating and predicting the regional groundwater quality in combination with the comparison and selection model and the water quality monitoring data, determining the regional groundwater quality type, and performing early warning according to a water quality management target; and rendering the regional groundwater quality analysisand evaluation result by combining the regional groundwater quality analysis and evaluation result and a visualization technology to form a dynamic groundwater quality evaluation effect picture, and displaying the dynamic groundwater quality evaluation effect picture on terminal equipment. According to the invention, information can be obtained in time under the condition of limited information, so that groundwater quality evaluation is accurate, quick, predictive and early-warning, and dynamic rendering display is carried out on the regional groundwater quality condition by coupling with a visualization technology.

The invention discloses a water quality monitoring, analyzing and processing system based on big data analysis. The system comprises an underground water monitoring area division module, a monitoringpoint arrangement module, a monitoring point sampling module, a manual input module, a standard database, a monitoring point parameter acquisition module, a water quality parameter analysis module, asoil parameter analysis module, a management server, a regional underground water flow rate acquisition module, a regional underground water content statistics module and a display terminal. Accordingto the invention, water quality parameters of underground water and soil parameters around the underground water are comprehensively detected, and the detected water quality parameters and soil parameters are analyzed in combination with the water quality parameter analysis module and the soil parameter analysis module, so that underground water quality comprehensive pollution coefficients corresponding to all water level depths are subjected to statistics, the defect that an existing groundwater quality monitoring method cannot accurately reflect the comprehensive pollution condition of groundwater is overcome, the groundwater monitoring efficiency and accuracy are improved, and the groundwater quality detection requirement is met.

The invention discloses a comprehensive evaluation method for the multi-index normal cloud of the water quality of underground water. The method comprises the following steps that: 1: according to main factors which influence the water quality of the underground water, combining with the combined action of physical ingredients, chemical ingredients and biological ingredients in a water body to establish an evaluation index system of the water quality of the underground water; 2: on the basis of the current situation of the water quality of the underground water in China, an underground water quality standard in China and the highest requirements of the water quality of domestic drinking water and industrial and agricultural water, carrying out underground water quality classification, and determining the evaluation level of the water quality of the underground water; 3: adopting a clustering weight method to determine the weight of each risk evaluation index; 4: carrying out calculation to determine cloud model digital features of the water quality evaluation of the underground water of different levels, and generating a cloud model of which the evaluation factor belongs to a certain stability level by virtue of a normal cloud generator; and 5: reading the actual measurement data of a sample to be evaluated, combining with each evaluation index membership certainty degree and weight obtained by calculation, and evaluating the water quality level of the underground water by a level corresponding to the maximum value of a comprehensive certainty degree.

The invention relates to an underground water monitoring well used for a refuse landfill and a construction method of the underground water monitoring well. The underground water monitoring well usedfor the refuse landfill comprises a well pipe, the well pipe is vertically arranged and sequentially comprises a solid wall pipe and a perforated pipe from top to bottom, and the solid wall pipe is fixedly connected with the perforated pipe. A top end cap and a bottom end cap are arranged at the upper and lower ends of the well pipe correspondingly, the top end cap is movably connected with the top of the solid wall pipe, and the bottom end cap is fixedly connected with the perforated pipe. The well pipe is buried underground except for the rest of the top end of the well pipe exposed at the ground, and the underground part of the well pipe is covered with a bentonite clay section, a security clay section, a clay closed section and a graded crushed stone section correspondingly from top tobottom. A concrete wellhead sleeves thebentonite clay section, a protective shell is fixedly arranged at the top of the concrete wellhead, the top end of the well pipe is located in the protective shell, and a cover plate is hinged to the top of the protective shell. The underground water monitoring well used for the refuse landfill and the construction method thereof can provide groundwater sampling monitoring to the periphery of the refuse landfill, surface water entering into the well through shallow soil aeration zone, causing the groundwater quality to change, and seriously affecting themonitoring result of the groundwater quality are avoided.

The invention provides an underground water quality monitoring system. The underground water quality monitoring system comprises a data acquisition module, a data transmission module and a data processing module, the data acquisition module is used for acquiring water quality parameters of underground water and transmitting the water quality parameters to the data transmission module; the data transmission module is used for transmitting the water quality parameters to the data processing module; the data processing module is used for judging whether the water quality parameters are abnormal or not, and if the water quality parameters are abnormal, the data processing module gives an alarm prompt. The water quality of the underground water is monitored through the data acquisition module,the water quality of the underground water can be monitored in real time, and the abnormity of the water quality can be found in time.