79 results about "Ground water quality" patented technology

The invention discloses a liquid sulphur collecting method suitable for a sulfur recovery device. Process gas of the sulphur recovery device enters a process gas condensate cooler to carry out gas-liquid separation; condensed and separated gas enters the next stage of reaction or condensate cooling system after a liquid sulphur catcher traps the liquid sulphur; the condensed liquid sulphur is collected by a liquid sulphur collector below the process gas condensate cooler; the collecting process is controlled by a process operation module; the collected liquid sulphur is directly delivered to a sealed liquid sulphur middle tank with pressure; the liquid sulphur is fed to a liquid sulphur treatment system after passing through a liquid sulphur degassing pump after gas-liquid secondary separation; and the separate gas is separated from the final stage of process gas condensate cooler and enters a tail gas treatment unit together with the tail gas which is further separated by a tail gas delivery tank. By adopting the technology, arrangement of a sulphur sealing tank, a sulphur sealing tank pond and a liquid sulphur pond is concealed; the technologic process is shortened; the investment on the equipment is reduced; and pollution of the liquid sulphur, the hydrogen sulfide and related treatment technologies on the soil, environment and ground water quality is partially removed.

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 relates to an online monitoring system of underground water and belongs to the field of environment monitoring devices and techniques. The online monitoring system of underground water comprise a power supply system, a data acquisition, transmission and display unit, an underground water quality monitoring unit, a ground meteorology monitoring unit and a central control system, wherein real-time data monitored by the underground water quality monitoring unit and the ground meteorology monitoring unit is displayed and then transmitted to the central control system through the data acquisition, transmission and display unit; the central control system performs artificial intelligent control and makes decisions; the power supply system adopts a wind, light, city grid triple power supply mode to supply power. According to the online monitoring system of underground water, the problem that electricity usage is difficult in remote areas; the power supply is fully automatic and intelligent; the purpose of fully automatic unmanned supervision is realized; a city grid is externally connected, so that instruments can still normally operate when solar energy and wind energy are insufficient; the water quality monitoring data can be extracted, transmitted, stored and processed and the monitoring, evaluation and prediction on quality of underground water are realized.

The invention discloses a water quality detection device and detection method. The water quality detection device comprises an in-water real-time detection device and a ground water quality analysis box; a plurality of detection probes are arranged on an installation plate; a waste fluid tube is arranged in a waste fluid tube groove; test tubes are arranged in test tube grooves; one end of a slideplate, which is far away from a change-over switch, is provided with a standby water storage barrel; a plurality of reagent needle tubes are embedded in a cross plate in a clamped manner; a toothed bar A is fixedly arranged between slide rods; a rotating rod is fixedly provided with a linkage gear in a manner that the linkage gear passes through the rotating rod; and one side of a center plate, which is close to the linkage gear, is fixedly provided with a toothed bar B. The water quality detection device provided by the invention can be used for carrying out in-water real-time detection andground chemical analysis detection on water bodies in different water layers, has functions such as multi-layer detection, automatic water storage and the like, and can automatically add different types and quantities of chemical reagents and automatically switch the detection of the next water layer after detection. The invention further discloses a detection method of the water quality detectiondevice. The detection method is simple to operate and worthy of popularization.

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 discloses a long-distance online detection method and a long-distance online measuring device for multiple parameters of underground water. A control signal is sent to an on-site measuring instrument through a remote control instrument to rouse the on-site measuring instrument; in the on-site measuring instrument, an underground water sample drawing and cleaning device is used for drawing underground water to be tested, an underground water quality multiparameter detection device is used for detecting the underground water to be tested, detection data are sent back to the remote control instrument through GSM (global system for mobile communication), finally, the underground water sample drawing and cleaning device is used for cleaning a water sample passage therein so as to perform detection of the underground water to be tested for next time, thereby realizing long-distance online detection for the multiple parameters of the underground water. The method and device can be used for performing long-distance detection on chemical oxygen demand in the underground water quality and on substances such as nitrate ions and chromium ions as well as turbidity degree in the underground water, the disadvantage that traditional chemical detection causes secondary pollution to the environment is avoided, the period of underground water quality detection is shortened, the technological process of the underground water quality detection is simplified, and the fast and efficient detection requirement is met.

According to the embodiment, the invention discloses a milk making control method of a food processing machine. The food processing machine comprises a motor, a crushing cup and a water tank, whereina heating device is arranged at the bottom of the crushing cup; a crushing blade is arranged in the crushing cup; the water tank is connected to the crushing cup via a pipeline; and a water pump is arranged in the pipeline. The method comprises the following steps: when the crushing cup is injected with water, directly pumping cold water in the water tank via the water pump and injecting the crushing cup with the cold water, and injecting the crushing cup with cold water in one or more times, wherein the water amount of the cold water which is injected for the first time is less than 600ml. According to the embodiment, the crushing cup is directly added with the cold water, and an instant heating device is avoided, so that machine cost is greatly reduced; and meanwhile, a problem that underground water, which is poor in quality, cannot be used for making milk is solved, and machine performance is improved.

The invention discloses a method for analyzing the groundwater infiltration amount of a sewage pipe network. The method includes the steps that groundwater in a service area of the sewage pipe networksystem in a monitoring area is taken and subjected to water quality characteristic factor concentration detection, and the water quality characteristic factor concentration of the groundwater in themonitoring area is amg / L; an upstream node and downstream node of any one sewage pipe segment to be monitored in the monitoring area are labeled as a JA and a JB respectively; flowmeters and automaticsamplers are installed at the JA and the JB respectively; sampling and water quality detection are separately carried out on the JA and the JB through the automatic samplers every half an hour, and water quality characteristic factors are detected as XA and XB respectively; corresponding instantaneous flow rates of the JA and JB which are obtained during sampling time according to monitoring dataof the flowmeters are QA and QB respectively; the groundwater infiltration amount Q of the sewage pipe segment to be monitored is calculated. The method adopts stable metal ions as the water qualitycharacteristic factors of the groundwater and solves the problems that the cost for segmental geophysical prospecting or detection of the water quality characteristic factors is high, the constructionis difficult, and there are large errors.

The invention relates to a comprehensive evaluation method of underground water, wherein the method includes steps of a, re-classifying the classification dividing value of seventeen water quality indexes such as manganese, fluoride, monoiodide and mercury in the underground water quality; b, selecting the water quality index participated in rating according to the testing index of the underground water sample, and substituting the testing result of the underground water sample and the classification dividing value of the selected water quality index participated in the evaluation to a membership function, and calculating and acquiring a fuzzy membership matrix; c, performing data conversion on a toxic index of the water quality index; d, according to the converted toxic index, the sample testing result, and the classification dividing value of the water quality index, calculating a weight matrix; e, coupling the fuzzy membership matrix with the weight matrix, and acquiring the evaluation result matrix and the evaluation grade of the underground water quality. The evaluation result fully considers about the risk of the human body health, and can comprehensively evaluate the underground water quality from the view of the human body health risk; the evaluation result can further objectively reflect the drinking safety.

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 provides a GRRM model-based groundwater environment risk evaluation method for a hydrogeological unit. The method comprises the steps of performing risk source assignment according to a risk source type based on spatial distribution of a risk source through a hydrogeological division risk evaluation unit; by taking groundwater quality, groundwater level and groundwater source area sensitivity as risk suffers, calculating risk suffer sensitivity; determining damage degrees of the risk source to a groundwater system and the risk suffers, and obtaining an exposure response coefficient; calculating a groundwater anti-pollution performance index by integrating weighted hydrogeological parameters; and obtaining a groundwater relative risk evaluation result through relative risk model calculation, and performing representation on a groundwater environment in combination with the groundwater relative risk evaluation result. By obtaining the risk source assigned value of the risk evaluation unit, the risk suffer sensitivity, the exposure response coefficient and the groundwater anti-pollution performance index, the groundwater relative risk evaluation result can be comprehensively, quickly and accurately calculated and analyzed, so that the reliability of groundwater relative risk evaluation is improved.

The invention relates to a filling and water-pumping double-well treating method for treating polluted underground water. The filling and water-pumping double-well treating method for treating the polluted underground water is characterized in that a non-point source pollution area is provided with a filling reaction material well (17) and a water-pumping well (18) so as to form a 'filling and water-pumping' double-well; a filtering tube (6) is arranged on a water containing layer of a well wall tube (3); the upper portion of the well wall tube (3) is a waterproof tube (12); and a medium combined material layer (2) is arranged on the periphery of the filtering tube (6) on the well wall tube (3). The thickness of medium combined materials is determined according to pollution concentration of the underground water and the effect of the medium combined materials; reducing agents are injected in two ends of the medium combined material layer (2); by the injected reducing agents, removed materials can be recycled; a water quality monitoring instrument can dynamically monitor the quality of the underground water in real time; and water can be pumped through a water-pumping tube. The problems that non-point source pollution is difficult to treat and the underground water cannot be used are solved. The double purposes of removing pollutants and supplying water can be achieved by a single well.

The invention belongs to the technical field of groundwater monitoring and particularly relates to a groundwater layered monitoring well suitable for multiple aquifers. The groundwater layered monitoring well suitable for multiple aquifers includes: a single-hole multi-layer shaft frame, a single-hole multi-layer sampling subsystem for sampling from the single-hole multi-layer shaft frame, and a single-hole multi-layer monitoring subsystem for monitoring the sampling information of the single-hole multi-layer sampling subsystem. The groundwater layered monitoring well reduces a cost, efficiently and practically realizes single-hole multi-layer monitoring of multiple aquifers of groundwater, satisfies the technical requirements on the domestic groundwater quality in-situ high-precision long-term sequence monitoring and single-hole multi-layer monitoring and well serves evaluation and protection of groundwater resources.

The invention discloses a water level and quality jointly controlled drain device of a farmland underground drain pipe, relates to a water level and quality jointly controlled drain device of a gate of a farmland underground drain pipe, and belongs to the technical field of agricultural soil and water engineering. The upper end of a floating ball device is provided with a spring piece control device which is connected with a water quality detection device, and the lower end of the floating ball device is connected with the gate which is provided with an underground pipe transversely, and the height of the gate is greater than that of the underground pipe. The water level and quality jointly controlled drain device can control the underground water level according the growth needs of crops, and control the automatic opening of the gate and drainage volume according to the water level and quality of underground water of a farmland, thereby ensuring that a soil reservoir can give a full play to a water storage and discharge function, implementing underground water management and preventing widespread pollution due to nitrogen and phosphorus loss in the farmland. The drain device has the advantages of realizing the multi-target control of farmland drainage, reducing agricultural non-point source pollution, along with simple structure and easy popularization.

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 system and method for taking and reusing water from a riverway supplemented with recycling water, belonging to the technical field of water pollution treatment. The system adopts a method of combining a reoxygenation-type shore filter with a nanofiltration membrane, and takes water from the riverway supplemented with recycling water; and after being purified, the water can be reused as various types of non-direct drinking water. Recycling water entering the riverway satisfies the IV class water requirement (TN<10mg / L) of environmental quality standard for surface water (GB3838-2002). The method comprises the following steps: arranging the reoxygenation-type shore filter along the shore of the riverway; removing parts of soluble organic matters, ammonia nitrogen and the like in river water by the degradation action of microorganisms; and causing shore filtered water to enter a two-level nanofiltration system to remove most organic matters, nitrate nitrogen, inorganic salt and the like remained in the water. Nanofiltration effluent can satisfy the water quality standard requirement of thee-class ground water and can be used for urban landscapes, irrigation, virescence, various purposes in city, process water and the like.

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 provides a membrane processing system for ground water containing excessive ferro manganese ions and a method thereof. The invention is characterized in that the membrane processing system comprises an aeration pond and a membrane assembly, wherein the membrane assembly is arranged inside the aeration pond, and an inner cavity of the membrane assembly is communicated with a suction pump positioned outside the aeration pond through a water outlet pipeline. The excessive ferro manganese ions in the ground water mean that the ferric ions or manganese ions or both contained in the water are incapable of meeting the indexes of GB5749-2006 Sanitary Standard for Drinking Water. The ground water treated by the system and method has stable water quality and exceeds the indexes of GB5749-2006 Sanitary Standard for Drinking Water. The system and the method are suitable for areas where the ferro and manganese content in the ground water is high and water treatment reclamation areas. The system and the method are worthy of generalization and application.

The invention provides a cyclic extraction type groundwater quality detection equipment system. The system comprises an extraction pipe, a self-priming pump, a water inlet pipe, a water tank, a watertank outlet pipe and a water return pipe, wherein the lower end of the extraction pipe extends into a sampling well; an inlet of the self-priming pump is connected with the upper end of the extractionpipe; the water inlet pipe is connected with an outlet of the self-priming pump; a water inlet of the water tank is communicated with the water inlet pipe, and a plurality of water quality parametersensors with different indexes are distributed in the water tank; the water tank outlet pipe is communicated with a water outlet of the water tank; the upper end of the water return pipe is connectedwith the water tank outlet pipe, and the lower end extends into the position, below the groundwater level and close to the water surface, of the sampling well. A water sample is extracted from the bottom of the sampling well, water quality is detected by detection equipment on the ground, meanwhile, the water sample is not reserved, the extracted groundwater is reinjected into the upper water level layer of the same sampling well in real time, groundwater sampling is facilitated for a technician while groundwater quality is monitored on line, disturbance to quality of sampling water from the well bottom is reduced to the greatest extent, and water level in the well is guaranteed.

The invention provides an administrative region groundwater environment risk assessment method based on a GRRM model. The method comprises steps: a risk assessment unit is divided according to an administrative region, and the risk source pressure density of the risk assessment unit is calculated; with the groundwater quality and the groundwater supply ability as risk receptors, the risk receptor sensitivity is calculated; the damage degree of the risk source to the groundwater system and the risk receptor is determined, and an exposure response coefficient is obtained; a hydrogeological parameter is weighted comprehensively to calculate a groundwater anti-pollution performance index; and through a relative risk model, the groundwater relative risk assessment result is calculated and obtained, and in combination with the groundwater relative risk assessment result, the groundwater environment is characterized. Through acquiring the risk source pressure density of the risk assessment unit, the risk receptor sensitivity, the exposure response coefficient and the groundwater anti-pollution performance index, the groundwater relative risk assessment result can be calculated and analyzed comprehensively, quickly and accurately, and the reliability of the groundwater relative risk assessment can be improved.

The invention provides a multi-parameter integrated continuous online monitoring system for water quality of underwater. The monitoring system comprises a large barrel fixed on a support, a small barrel is disposed in the large barrel, and the support is provided with a plurality of wheels at the bottom. The large barrel is provided with a water outlet at the bottom, and the small barrel is provided with a water inlet at the bottom. The top of the small barrel is open, top of the small barrel is provided with a barrel cover, and a dissolved oxygen electrode, a conductive electrode, a pH electrode and an ORP (oxidation-reduction potential) electrode penetrate through the barrel cover to extend into the small barrel respectively. Water flow enters from the water inlet at the bottom of the small barrel, overflows from the top of the small barrel and flows out of the water outlet at the bottom of the large barrel. By the design of a flow-through pool of the small barrel sleeved by the large barrel, the electrodes are stretched into the small barrel through the barrel cover of the large barrel, and accordingly water quality to be detected is isolated from the outside so as to reflect truth of water quality. The whole system is designed in a demountable 'handcart' type, so that the monitoring system can move conveniently and flexibly, the handcart can be demounted to conveniently move, and motion operation is facilitated for a user according to the environment.

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.

A mobile type modular unit for emergency treatment of organic pollutants containing underground water comprises a coagulating sedimentation unit system, a coagulating air flotation unit system, a middle adjustment system, an aeration stripping unit system, a chemical oxidation unit system, a chemical preparation and feeding system, a control system and a container loading system and is characterized in that different proper physical and chemical combination processes in a module can be flexibly selected through regulation of the control system according to the water quality and the type of organic pollutants in different kinds of underground water, so that polluted underground water pumped out of the ground can be subjected to emergency treatment, and the unit systems as well as related communication pipelines and equipment are all mounted in a mobile type container loading system. The modular unit can be moved flexibly, is high in adaptability, easy to operate and high in automation degree, can be rapidly dispatched in areas where underground water is encountered with organic pollution suddenly and can also be used for treatment of surface water in an accident site and industrial waste water, and the underground water pollution emergency treatment capacity of the chemical industry is improved.

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 discloses a preparation method of a hemicellulose / chitosan nano TiO2 hybrid material and application of the material in heavy metal adsorption. The method comprises the steps as follows: nano TiO2 modified by sodium dodecyl sulfate and chitosan are dispersed in a dilute acetic acid solution, and chitosan / nano TiO2 emulsion is obtained after sufficient dissolution; then moderate hemicellulose is added in the emulsion to obtain hemicellulose / chitosan nano TiO2 emulsion, and a reflux reaction is performed at the temperature of 100 DEG C for 30-60 min to obtain beige gel; the gel is further subjected to a thermo-crosslinking reaction for 6-9 hours under the condition of ordinary pressure and the temperature of 40 DEG C; and after freeze drying, the hemicellulose / chitosan nano TiO2 hybrid material is obtained. The material prepared by the method has a good absorbing effect on the heavy metals such as Cu, Cr, Hg, Ni and Cd, an absorbing action on trace amount of ClO4 in water, and wide application prospect in the field of sewage treatment, in particular to groundwater water quality purification.

The invention discloses a biological reaction well group and an underground water in-situ reinforced biological reaction wall and an arrangement method thereof. The biological reaction well groups areonly distributed at the boundary of the groundwater pollution range to be controlled and near the boundary of the groundwater pollution range. The first row of the biological reaction well group is distributed along the boundary line of the underground water pollution range to be controlled. The second row of the biological reaction well group is arranged towards the inner side of the boundary ofthe groundwater pollution range and is distributed on a perpendicular bisector which takes a connecting line of any two adjacent biological reaction wells in the first row as a bottom edge. The biological bacteria diffuse in the biological reaction well group at the boundary of the groundwater pollution range to form a closed biological reaction wall, carbon, nitrogen, phosphorus and other nutrient substances are regulated and controlled through the biological reaction well to continuously operate and maintain the biological reaction wall, and the purpose of controlling the groundwater pollution range not to be enlarged can be achieved without repairing the groundwater quality in a large range. The implementation method is simple, and the cost is controlled.

The invention relates to a dissolved oxygen online monitoring method and an adopted sensor. The method and the sensor are characterized in that the method and the sensor are based on an oxygen molecule specific sensitive membrane. High-power blue-light-emission LED is adopted as an excitation light source for exciting the sensitive membrane to produce fluorescence with a certain wavelength; signal acquisition is carried out through light filtering and photoelectric tube photoelectric signal conversion. Oxygen concentration in water is proportional to the intensity of detected fluorescence signals. Through optical fiber transmission and fluorescence intensity spectroscopic measurement, the concentration of dissolved oxygen in water can be determined. The specific molecule sensitive membrane is a ruthenium complex. Central wavelength of the fluorescence with a certain wavelength is 590nm. The wavelength of the high-power blue-light-emission LED is 473nm. According to the established online monitoring sensor, LED is adopted as a light source, such that repeated measurements and continuous measurements can be carried out. The oxygen sensitive membrane has high tolerance, high interference resistance, and long service life. The sensor is suitable for water body long-time continuous monitoring, and has wide application prospect in surface water and underground water quality monitoring.

The invention discloses a groundwater quality monitoring technology for monitoring the ecological environment quality of a county. The groundwater quality monitoring technology comprises a first supporting base, a clamping strip, a water quality monitor, a contact terminal placing frame and a chute, wherein a second supporting base is arranged above the first supporting base, and the contact terminal placing frame is fixedly welded with the right side of a second gear; a protective cover is arranged above a working table, and the inner wall of a rotating rod is fixedly welded with a threaded rod. Through the arrangement of a balance rod, a limit rod, a connecting rod, a connecting sleeve and a shock absorbing spring, in the process that the second supporting base bears the downward pressure, the second supporting base slowly slides down, so that the clamping strip can play a fixing and supporting role, thereby firmly fixing the second supporting base to a certain place under the actionof no external pressure and gravity; meanwhile, the second supporting base can be determined to stay at a certain position according to the weight of the external pressure, and the connecting rod cantransmit the acting force to the shock absorbing spring in the process that the connecting rod bears the downward acting force.

The invention discloses in-situ remediation equipment for organically contaminated soil and underground water. The in-situ remediation equipment comprises a central control system, an air compressionsystem, an ozone generation system, a gas distribution system, a reagent dissolving preparing system, an injection well system and a monitoring well system. Free radicals generated by the remediationequipment comprise OH* and SO4<->*, more types of organic matters can be oxidized, the reaction duration time is longer, and no secondary pollution is caused by an adopted oxidizing agent; sodium persulfate can be activated by reaction of hydrogen peroxide and ozone, so that additional activation conditions are avoided, and the economical benefit is improved; high-pressure air can promote transmission of chemicals, the influence radius is effectively increased, and blockage of the injection well is avoided. In addition, the in-situ remediation equipment is further provided with the monitoringwell system, the underground water quality and pollutant concentration can be monitored in real time, and a basis is provided for change of the agent adding amount. Automatic control over medicament transmission and real-time feedback of water quality and pollutant data are achieved, and meanwhile organic pollution in soil and underground water is remediated.

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.