723 results about "Sample water" patented technology

The invention provides an experimental apparatus for simulation research on water quality and quantity of biotical retained elements under an artificial rainfall condition. The experimental apparatus comprises a rainwater storage tank, a water pump, an aqueduct, a supporting frame, a water quantity regulation tank, a valve, a water outlet pipe, a spray head, rainfall holes, a porous water distribution plate, an experimental soil bin, a small sampling perforated pipe and a large sampling perforated pipe, wherein the lower outlet of the rainwater storage tank is connected with a water inlet of the water pump; a water outlet of the water pump is communicated with the water quantity regulation tank arranged on the supporting frame through the aqueduct; the outlet of the water quantity regulation tank is provided with the valve and connected with the spray head through the water outlet pipe; the porous water distribution plate which is provided with a plurality of rainfall holes is arranged under the spray head and above the experimental soil bin; and the small sampling perforated pipe is positioned on the central part of the experimental soil bin, while the large sampling perforated pipe is positioned on the lower part of the experimental soil bin. The experimental apparatus for the water quality and quantity simulation research on the biotical retained elements under the artificial rainfall condition has a simple structure, can regulate rainfall intensity and uniformity, and realize water sampling of soil in different time and different structural space, and has an application prospect in the field of environment engineering and ecological engineering.

The invention discloses a radial basis function (RBF) neural network parameter self-optimizing-based multi-step prediction method for water quality. The method comprises the following steps of: first storing the data of each monitoring station into a database of a local server by using the remote transmission of an online water quality monitoring instrument; then performing normalization processing on a water quality sample sequence, calculating an autocorrelation coefficient to determine an input variable of an RBF neural network, and converting sample data into a standard dynamic sequence data format trained and predicted by the RBF neutral network; next searching for and determining an optimal value of a spreading coefficient spread of the RBF neural network by utilizing a differential evolution algorithm and taking a relative standard error as a target function to obtain an optimal prediction model; and finally sampling water quality data in real time, performing multi-step prediction by using the obtained optimal prediction model and adopting a single-point iteration method, and evaluating a water quality prediction result to realize an early warning function. The water quality can be intelligently warned.

The invention discloses a gas absorption and desorption experimental device with controllable coal sample moisture content. The experimental device comprises an inflation system, a vacuum degassing system, a constant temperature system, a gas absorption and desorption measuring system and a coal sample water injection system. Meanwhile, the invention also discloses a gas absorption and desorption experimental method with controllable coal sample moisture content. According to the device and method, a change rule of moisture content change on gas absorption and desorption performance influence of coal is researched by changing the moisture content of the coal sample through the coal sample water injection system, the change rule of the coal gas absorption and desorption performance before and after taking coal seam water injection and hydraulic cutting measures can be well reflected, the device and method contribute to treating coal and gas outburst disasters occurring in mines and effectively performing gas extraction, the device is simple in structure, the operating method is simple, the operating steps are simple and convenient, and the using effect is good.

The invention relates to a water sampling device, in particular to a different-depth water sampling device for treating industrial wastewater, and aims at adjusting the sampling depth according to different requirement and synchronously sampling from different places. For solving technical problems, the invention provides the different-depth water sampling device for treating industrial wastewater, and the device comprises a mounting rack and the like, wherein sampling mechanisms are uniformly arranged on the mounting rack; adjusting mechanisms which are matched with the sampling mechanisms are arranged on the mounting rack. According to the device, the sampling mechanisms are arranged and used for synchronously sampling water through a plurality of sampling pipes, which facilitates the work of workers; the adjusting mechanisms are arranged and used for conveniently adjusting the height of the sampling pipes, so that the sewage under different depth in the same place can be synchronously sampled.

The invention discloses a river and lake bottom sludge pollutant flux test method and a river and a device based on a diffusion theory. The method comprises the following steps of: A, acquiring a bottom sludge sample; B, putting the bottom sludge into a base of an experimental device, and enabling the sludge surface to be horizontal; C, slowly injecting water to a column port along a column wall; D, injecting running water into the experimental device without the bottom sludge; E, standing for a certain time; F, measuring the pollutant concentration of the taken water sample; G, calculating a degrading coefficient of the pollutant in the water; H, calculating an initial concentration value of the bottom sludge water; and I, calculating a pollutant exchange flux of a water-sludge interface. A base plate is fixed at the bottom of a constant-temperature water tank; a base wall is arranged on the base plate; a lower flange disk is arranged on the upper part of the base wall; an upper flange disk is arranged at one end of a column body; and an upper flange disk fixing bolt flange hole is formed in the upper flange disk. The method is feasible, and is convenient to operate; the experimental device has a rational and simple structure; operations of accommodating deposits, sampling water samples and the like are extremely convenient; and outstanding economic benefit is achieved.

The invention provides an air-ground-space integrated hyperspectral water quality monitoring and analyzing method. The method comprises the following steps of: S1, acquiring of water quality monitoring data: including hyperspectral data acquisition and water body sample data acquisition; S2, water quality monitoring data processing: performing data processing on the acquired multi-source water quality monitoring data; S3, establishment of a water quality parameter inversion model: establishing a water quality parameter inversion model according to the multi-source hyperspectral monitoring data, and modeling the water quality parameters through the inversion model based on artificial intelligence; and S4, water quality parameter inversion analysis. The beneficial effects of the air-ground-space integrated hyperspectral water quality monitoring and analyzing method are that: the method can meet the requirement of large-range water quality monitoring, can reflect the distribution and change conditions of the water quality in space and time, can make up defects that water surface sampling is singly adopted, can find pollution source distribution and migration characteristics and influence ranges of pollutants which are difficult to reveal by some conventional methods, can provide a basis for scientifically monitoring the water environment, and has the remarkable characteristics ofhigh dynamic, low cost and macroscopicity.

A method for preparing chemical modified electrode of carbon paste Bi membrane includes mixing and grinding carbon powder and modifier as well as hydrophobic organic solvent to be carbon paste, packing prepared carbon paste in electrode tube with copper screw bar in proper size to form carbon paste electrode, placing formed carbon paste electrode into sample solution containing with Bi ion and carrying out constant-potential deposit to obtain chemical modified electrode of carbon paste Bi membrane.

The present method provides a single-phase technique in which an ionic strength adjuster and a water insoluble dye are added to a sample of an aqueous solution containing an unknown quantity of a known surfactant. Even at surfactant concentrations well below the critical micelle concentration (CMC) of the aqueous sample, the addition of an ionic strength adjuster induces the surfactant to form micelles. These micelles absorb the water insoluble dye, thereby imparting a known color to the aqueous sample being tested. The color intensity of the treated aqueous sample is directly related to the concentration of the surfactant in the sample and, through the use of calibration curves prepared from samples of know concentration, can be used to determine the surfactant concentration.

The pollutant-in-water enrichment and extraction method based on functional nano fiber comprises: with electronic-spinning technology, adding or not the functional material, or using post-process fiber surface, manufacturing fiber; preparing members with different diameter and thickness to match with proper fitting. This invention can improve interactive force between fiber and target, reduces balance time, and fit to instrumental analysis.

The invention discloses a mini-flow or storm radial flow self-gathering system to gather and gauge random time step flow sample at direct pattern, which comprises the following parts: pumping, dividing and gathering structures, wherein the pumping structure contains pump in the dam detecting well of mini-flow outlet and floating control stroke switch; the diving structure contains motor, stroke switch, time-delay relay J, diving control disk controlled by torsion bar switch on the lower frame; the gathering structure contains dividing disk on the frame, which contains dividing groove; each opening of dividing groove connects the water gathering cup under the groove. The invention simplifies the structure and saves the power and cost, which is more fitful for field sample test and data gathering.

The invention discloses a water quality COD detection method and an apparatus based on LED multi-feature wavelength. Light sources of N LED lamps with different characteristic wavelengths along a circumference direction are fixed, in an equal interval, on a front surface of a rotating disk; positioning teeth corresponding to the positions of the N LED lamps are arranged on a side surface of the rotating disk along the circumference direction; a convergent tube is arranged in front of the rotating disk, and a light source entrance is arranged on a rear end of the convergent tube; a first focusing mirror, a colorimetric ware containing water to be measured, a second focusing mirror and a photodiode are successively arranged with intervals right in front of the convergent tube; the colorimetric ware is arranged in a rectangular notch of a colorimetric ware rack; the photodiode converses a received optical signal into an electric signal, and amplifies and sends the electric signal to a one-chip microcomputer; an absorption light intensity of a sample to be measured at a first characteristic wavelength is measured, and absorbance is calculated out; the operations are repeated, and absorbance values at N characteristic wavelengths are put into a BP nerve network model; and a COD value of the water to be measured is calculated out, so as to realize rapid, accurate on-line measurement on the water quality COD value.

The invention relates to a water sampling device for farming water quality monitoring. The water sampling device comprises a peristaltic pump (8) and a water quality sensor (9), wherein the front end of the peristaltic pump is connected with a hose (2), the rear end of the peristaltic pump is connected with the water quality sensor (9), the front end of the hose can extends to the inside of a to-be-monitored water area, the peristaltic pump (8) is provided with a driver, a corresponding control module is arranged in an external computer, and the flow rate and velocity of the peristaltic pump (8) are controlled by using an external computer (12) through the control module, so that the peristaltic pump (8) meets the requirements of the water quality sensor (9) on flow velocity and flow rate. By using the water sampling device for farming water quality monitoring disclosed by the invention, the sampling flow rate and the sampling flow velocity can be automatically controlled, and the original water in the water quality sensor and a pump body can be accurately and rapidly discharged so as to meet the requirements of the water quality sensor on flow rate and flow velocity, thereby greatly improving the accuracy and rapidness of monitoring.

The invention discloses a convenient apparatus for sampling water bodies having different depths from underground/surface water, and a method thereof. The apparatus comprises a telescopic connecting rod, and the bottom of the telescopic connecting rod is provided with a plurality of detachable sampling bottles; a reel is arranged at the fixed end at the top of the telescopic connecting rod, and a wheel skidding fixed device is arranged at the extension end at the bottom of the telescopic connecting rod; a plurality of rails are respectively arranged on the reel and the wheel skidding fixed device, a lifting rope is wound on every rail, and the quantity of the lifting ropes is same to that of the sampling bottles; and the top of every sampling bottle is provided with a sampling bottle cap and a check valve device, and the bottom of the lifting ropes are respectively connected with the check valves. The sampling apparatus is placed in the water, the lifting ropes corresponding to the sampling bottles are respectively stretched, and the corresponding check valve devices are opened to collect the water bodies. The apparatus and the method have the advantages of manpower saving, great reduction of the interference of disturbance of the water bodies, caused by repeated water collection in the sampling process, to the components of the water bodies, and provision of a strong technical foundation for the water environment investigation work.

The invention discloses a hydration degree measurement method for cement-based materials based on nuclear magnetic resonance, which belongs to the technical field of cement material measurement. The hydration degree measurement method disclosed by the invention adopts a nuclear magnetic resonance technique to test nuclear magnetic signals of the cement-based materials at different ages; a relation between transverse relaxation time and the nuclear magnetic signals is obtained by inverse analysis; furthermore, a ratio of nuclear magnetic semaphores of left and right peaks is taken as a nuclear magnetic signal ratio of gel pore water and capillary pore water, and then the hydration degree of the cement-based materials to be detected at the age is solved according to a Powers model. Compared with traditional methods including a muffle furnace method and the like, the hydration degree measurement method disclosed by the invention is a nondestructive testing method, can reduce operation steps of a test greatly and shorten a testing period greatly, and can be used for monitoring samples continuously so as to ensure that the errors of test results are small; meanwhile, the method disclosed by the invention does not need to calibrate nuclear magnetic resonance semaphores and sample water content and directly adopts the ratio of the nuclear magnetic semaphores of the left and right peaks, namely a microstructure factor, as a parameter to represent the hydration degree, and therefore, measurement procedures and errors are reduced.

The invention discloses an indirect competitive enzyme-linked immunosorbent assay (ELISA) for measuring heavy metal mercury, belonging to a method for measuring heavy metal mercury in an environment water sample. The method comprises the following steps: taking a monoclonal antibody for specially identifying mercury-chelating agent EDTA compound Hg-EDTA as the base, coating the coated antigen mercury-chelating agent-albumen on a 96-hole ELISA plate; incubating at 4 DEG C over night and then sealing by phosphate buffer solution PBS including 1% of gelatin, after washing the ELISA plate, addinga mixing solution of the specificity mercury monoclonal antibody and samples to be measured, incubating at 37 DEG C and then washing the plate, adding an ELISA secondary antibody, incubating at 37 DEGC, adding an enzyme reaction substrate after washing the plate, and adding a reaction stop solution for stopping the reaction after the incubation, and then measuring the absorbance value of each hole by an ELISA reader; obtaining a standard competitive inhibit curve, then executing Logit transition on the curve, and drawing the standard curve of the mercury in the sample to carry out the quantitative analysis. The method is suitable for the measurement of trace mercury in an environment water sample, simultaneously provides the technical support for the fast scene measurement of heavy metalpollution emergency in order to remedy the pollution accident and go back to work in time.

A method and apparatus for performing water based mud-filtrate contamination monitoring in real time through evaluation of downhole water sampling.

The invention relates to a sampling device, in particular to a sampling device for sewage water quality detection, and aims to provide a sampling device for sewage water quality detection, which can go deep into water to sample water at different depths, is easy for extracting sewage and has high sewage detection stability and high accuracy. Aiming to solve the technical problem, the sampling device for sewage water quality detection comprises a telescopic rod, a handle, guide sleeves, first pulleys, bearing seats, a revolving shaft, wire spools and the like, wherein the right end of the telescopic rod is connected with the handle; the top and the bottom of the left end of each segment of telescopic rod are connected with the guide sleeves; the first pulleys are arranged on the top and at the bottom of the telescopic rod at the leftmost end; the bearing seats are arranged on the top and the bottom of the telescopic rod at the rightmost end. By adopting the sampling device, water at different depths can be sampled by going deep into water, and the effects of easiness in sewage extraction, high sewage detection stability and high accuracy are achieved.

The invention discloses an automatic satellite synchronization surface layer columnar water sample collection system and an automatic satellite synchronization surface layer columnar water sample collection device. The automatic collection system comprises a cloud detection module, an overlay analysis module, a command generation module, a short message receiving-transmitting module, a short message controller, a micro electric windlass and a sampling device, wherein the short message controller receives a sampling command short message to drive the micro electric windlass, and the micro electric windlass drives the sampling device to sample water; the sampling device comprises a sampler and a hoisting mechanism. By adopting the automatic satellite synchronization surface layer columnar water sample collection system, the automatic sampling is realized; the sampling device is simple in structure and few in moving parts, has no precise element, is sealed in an elastic film torsion manner and is low in cost, reliable in action, easy to maintain and suitable for long-time field guard and multi-point installation and layout; the pollution of lake water for the sampler can be avoided, the interference of the sampler for planktons on the surface layer of the water also can be avoided, and the reliability of a sample can be improved.

The method includes following steps: to filter and clear alge in water by sand to reduce quantity of suspended substances and microcap frustule in water; next is plant absorbing process, a section of organic substances and microcystim are absorbed and decomposed by sandy soil plate which hygrophytes are planted on; the third is to further get rid of suspended substances and microcap frustule in water by active carbon adsorbing installation; the fourth is ozone process by blowing in high-density ozone containing air; the fifth is to detect content of microcystim in drinking water processed by method of high-effective liquid phase chromtograph detection.

A BOD on-line detector of sensor type is prepared as transferring sample in filter element of sampling unit A to sample cup of measuring unit C through sampling pump, connecting microbiological membrane transducer of measuring unit C to electrode interface of controlling unit B, applying instrument software to directly calculate out BOD of sample based on measurement signals of microbiological membrane transducer through signal collector and signal amplifier.