93 results about "Groundwater sampling" patented technology

The simultaneous taking of water samples from the bottom of a column of water in the bed water above a water bed is of use for scientific investigation of the transition zone between the water bed and the water column lying above the same, for the determination of parameter gradients. Conventional bed water sampling devices with an arrangement of horizontally oriented sample containers at different water levels do not generally permit a non-invasive sampling. According to the invention, said ground water sampling device thus comprises central retainer rod (2) for the sample containers (3), which permanently rotate freely and easily in the bottom currents by means of a flow vane (6). All sample containers (3) comprise sealing devices (16) on both front surfaces (14, 15) and are flushed through with bed water originating from the corresponding level before the sampling. All sealing devices (16) are essentially instantaneously by means of a time-controlled actuator (10) which is mechanically activated by pushing up a trigger plate (8) after the adequately long placement of the ground water sampling device (1). High-resolution profiles of various parameters can thus be simply, precisely and reproducibly determined even in water of great depth, by means of said simple and robust bed water sampling device (1), which can be lowered by means of a simple steel cable (7).

The invention discloses a portable underground water fixed-depth sampling device, a sampling system and a sampling method, and belongs to the field of site pollution investigation and risk assessment.A moving blocking air bag is arranged; stagnant water at the upper end and the lower end of an underground water sampling probe in a well pipe is effectively blocked, an underground water sample at the depth where the sampling probe is located can be accurately collected, the problem that in the well washing sampling process of a traditional method, upper-layer water samples and lower-layer watersamples in the well pipe are mixed, and consequently sample dilution is caused is solved, and the concentration detection accuracy is improved. Underground water samples of different depths can be accurately collected in the same monitoring well, fixed-depth sampling is achieved, and the cost is obviously reduced. In addition, the stagnant water on the upper layer and the lower layer of the underground water sampling probe in the well pipe is effectively blocked, the well washing volume before sampling can be reduced, the sampling time is saved, the sampling efficiency is improved, the well washing wastewater generation amount is reduced, the sampling cost is further reduced, disturbance to underground water in the well pipe can be reduced, and the accuracy of detected concentration is guaranteed.

The invention belongs to the technical field of underground water sampling and particularly relates to an underground water depth-setting stratified sampling device and an underground water depth-setting stratified sampling method applicable to regions without wells. The underground water depth-setting stratified sampling device at least comprises a sampling mechanism, a connecting mechanism and an underground sample injection mechanism, wherein the sampling mechanism comprises a first sampling mechanism body, a second sampling mechanism body, a sampling bottle, a gas-phase check valve, a nested flow splitting mechanism, a ball valve and a wellhead fixing support seat, the underground sample injection mechanism comprises a first underground sample injection mechanism body and a second underground sample injection mechanism body, and the connecting mechanism comprises a first connecting rod and a second connecting rod. Compared with similar technical products, the underground water depth-setting stratified sampling device applicable to the regions without the wells has the advantages that the device is novel in structural design and improved in working performance, functions, precision, stability and durability substantially, integrates a high-precision stratified sampling function and an underground water level line fluctuation monitoring function and can be rapidly mounted in the regions without the wells.

A groundwater sampling and pumping device and system for withdrawing groundwater from a well of small size, not exceeding 1.5 inches I.D. The device includes a hollow outer housing having water inlet ports formed through a bottom thereof and a hollow inner housing sized to be positioned integrally within the outer housing and defining a water flow passage therebetween. An electric motor in the inner housing is connected to a water impeller operably positioned to draw groundwater into the water passage. The water passing upwardly through the water flow passage provides cooling for the motor. Preferably the housing is formed of a polymer material, and/or a metal, such as stainless steel.

The invention relates to a special method for sampling soil and groundwater from a typical petroleum hydrocarbon contaminated site. The method comprises the following main steps: (1) collecting historical data and conducting interviews and site surveys in an early stage to confirm whether a site is a typical petroleum hydrocarbon contaminated site; (2) conducting primary sampling survey on the site, and distributing points for sampling in the site according to potential sources of pollution so as to confirm whether soil suffers from other contamination such as heavy metal contamination; (3) conducting secondary sampling survey on the site, wherein soil sampling points and groundwater sampling points are determined; and (4) conducting tertiary sampling survey according to the results of secondary sampling survey, distributing denser points for sampling in a possible contamination area range of the contaminated site, wherein mainly soil sampling points are laid out. The method provided by the invention is specifically for a special contaminated site, i.e., the typical petroleum hydrocarbon contaminated site, puts an end to the current situation that no specific specification is prescribed for sampling methods for petroleum hydrocarbon contaminated sites, and provides an effective method for sampling in petroleum hydrocarbon contaminated sites.

The invention belongs to the fields of underground water sampling and detection, in particular to underground water sampling and detection integrated equipment and a use method thereof. Aiming at theproblem that the existing underground water sampling and detection equipment is inconvenient to sample and detect relatively deep underground water under the earth surface, the following scheme is proposed: the integrated equipment comprises a horizontal mounting table, a support frame is arranged at the bottom of the horizontal mounting table, fixing holes are formed in skirt sections of the support frame, fixing mechanisms are mounted in the fixing holes, a rotating hole is formed in the horizontal mounting table, a rotating cylinder with internal thread at the inner wall is rotationally mounted in the rotating hole, a plurality of threaded rods connected end to end are spirally matched in the rotating cylinder, a driving mechanism for driving the rotating cylinder to rotate is arrangedon the horizontal mounting table, and a guide slot arranged along a length direction is formed on the outside wall of each threaded rod. The integrated equipment is convenient to mount and fix, the continuous splicing of the threaded rod length can be performed according to the underground water depth needing to be collected, so that the relatively deep underground water under the earth surface can be conveniently sampled and detected.

Some embodiments of the present invention are related to devices and methods for sampling groundwater at multiple target depths, wherein each of the devices for sampling groundwater at multiple target depths comprises: a hammer part having a spring for generating inertia and a hammer connected to the spring; a sampling needle part having a needle integral with a impacting part impacted with the hammer; a guiding part for moving the sampling needle part in straight and downward direction; and a sampled water containing part having a sampled water container for collecting the sampled water through the needle.

According to a groundwater monitoring well device and a groundwater sampling method in the present invention, the groundwater monitoring well device comprises a plurality of cylindrical well casings and N filter pipes that are connected to each other. A plurality of rectangular partition plates uniformly arranged from the axis to the inner wall on the upper and lower ends of the well casing divides cylindrical space in the well casing into N closed and non-connected first fan-shaped channels. The filter pipe includes a pipe wall upper part, a pipe wall lower part, at least one filter layer wrapped on the pipe wall lower part and a water stop ring. A plurality of rectangular partition plates uniformly arranged from the axis to the inner wall on the upper and lower ends of a pipe body divides cylindrical space in the pipe body into N closed and non-connected second fan-shaped channels. A plurality of through holes arranged on the lower part of the pipe wall corresponding to one of the second fan-shaped channels constitutes a filter fan-shaped body with a closed bottom. The filter fan-shaped body communicates with the first fan-shaped channels and the second first fan-shaped channelscorresponding to the upper part. The water stop ring is made from a water expandable material.

The invention discloses a water filtering pipe, an underground water monitoring well device and a construction method. The water filtering pipe is arranged at the bottom of an underground water sampling well, and comprises a pipe body, at least one filtering layer and a water stopping ring; the pipe body is provided with an upper pipe wall part and a lower pipe wall part; a plurality of through holes are formed in the lower pipe wall part; the at least one filtering layer wraps the lower pipe wall part; the water stopping ring surrounds the upper pipe wall part; the sizes of the filtering holes in the filtering layer are smaller than those of the through holes; and the water stopping ring is made of a material which expands with water. As the water filtering pipe is arranged at the bottomof the underground water sampling well and is used for detecting the water quality of the underground water of a specific stratum; the water filtering pipe is provided with at least one filtering layer which wraps the pipe body and is used for filtering soil particles and suspended matters, so that the space between the water filtering pipe and the wall of the well is not filled with a filtering layer; therefore the materials are saved; the transportation labour cost is reduced; and moreover, the used underground water well is also removed very conveniently so as not to affect subsequent development work of a site.

A portable groundwater sampling system utilizing an air pump in combination with a sampling tank, valves, and a pressure gauge to sample a liquid from a below ground surface monitoring well. The system includes a portable power supply for energizing the air pump and is mounted on wheels for mobility. The system also may include a flat work surface and storage container.

The invention provides a butt-joint one-well multilayer groundwater sampling system based on an electromagnet. The system comprises an inner tube, an outer tube and a sampler, wherein the outside of the outer tube is jointed with the well wall, a flower hole is formed in a position, corresponding to a underground aquifer, on the outer tube, the inner tube is arranged at the center in the outer tube and is aligned to the center of the outer tube, a discharged water interface is formed in a position, corresponding to the underground aquifer, on the inner tube, multiple groups of water isolation layers are arranged at positions opposite to the underground aquifer in a gap between the outer tube and the inner tube at intervals, the sampler comprises a sampling tube and a sampling joint, a sampling interface is formed in the lower side face of the sampling tube, the top of the sampling tube is connected with a sucking pump, and the sampling interface is configured with the discharged water interface. The butt-joint one-well multilayer groundwater sampling system provided by the invention is used for guaranteeing the validity of a water sample to the maximum degree, and is long in service life and convenient to operate.

The invention discloses a portable underground water sampling device and belongs to the technical field of underground water sampling. The sampling device comprises a water taking barrel (1) and a lifting rope (2) on the water taking barrel (1); a water inlet hole (13) is formed in the side wall of the bottom of the water taking barrel (1); two water stopping plates (10) are in hinged connection to the inner side wall of the water inlet hole (13) symmetrically; a reversed T-shaped limiting locking block (11) is arranged between the two water stopping plates (10) for controlling the two water stopping plates (10) to close, and iron sheets (9) are arranged on the end surfaces of the water stopping plates (10) opposite to the reversed T-shaped limiting locking block (11); two vertical chutes(16) are symmetrically formed in the inner wall of the water taking barrel (1) above the water stopping plates (10), a horizontal hollow rod (5) is arranged between the two chutes (16), and the horizontal hollow rod (5) is connected to a transparent floating ball (4) through a hose (17); and two magnets (22) are arranged in the bottom of the horizontal hollow rod (5). The portable underground water sampling device disclosed by the invention is simple in structure, convenient to operate and convenient to carry.

The invention discloses a static cone penetration test type underground water sampling method. The method is characterized in that the sampling method comprises the following steps: an outer sleeve is pressed into a position above a sampling depth of the soil, and soil in the outer sleeve is emptied; in the outer sleeve, a static cone penetration test type underground water sampler is pressed into the sampling depth, and the sampler is permitted to stand for collecting underground water. The method is advantageous in that the underground water sampling method is convenient and rapid to operate, pollution can be isolated, underground water sampling can be carried out at any designated sampling depth in maximum injection depth range, and direct contact to human is avoided.

The invention relates to an amphibious soil and underground water sampling apparatus. The apparatus comprises an amphibious excavator (1), a sampling drilling machine (2) and an operating platform (3), and the sampling drilling machine (2) and the operating platform (3) are an integral body, and are assembled on the chassis of the amphibious excavator (1); and the sampling drilling machine (2) is connected with the hydraulic system of the amphibious excavator (1) through a hydraulic pipeline (11), the amphibious excavator (1) has a walking device, and the drilling tool of the sampling drilling machine can be replaced as needed. The apparatus can work on land, and can also be effectively used in resource exploitation and environment treatment sampling work of desilt, wetland, marsh and beaches of rivers and lakes.

There are provided an apparatus and method for groundwater sampling, using a hydraulic coupler according to the present invention. In more particular, in the groundwater sampler which is positioned at multiple depths within a groundwater borehole to simultaneously take groundwater samples at the multiple depths, couplers are each connected to both ends of a water sampling pipe made of a metal pipe material. In case of positioning the sampler at a targeted depth, a socket and a plug forming each coupler are connected to each other, so that the both ends of the water sampling pipe-to lead groundwater to freely flow in/out. Thereafter, at the targeted depth, the sockets or plugs are permitted to be separated in the couplers at the both ends of the water sampling pipe by using a lift device, so that the both ends of the water sampling pipe are sealed to simultaneously taking groundwater samples at multiple depths.

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.

Provided are low flow groundwater fluid sampling systems and related methods of collecting fluid samples, including a low flow pump, flow cell, waste container and a communication device in communication with those components. In this manner, the low flow pump may be controlled to ensure a desired constant flow-rate is achieved, and a remote operator may monitor the status of fluid being pumped to the flow cell with the communication device, such as with a portable electronic device, including a smart phone. The system may alert the operator that fluid is ready to be collected for sampling, including at an off-site laboratory. Particularly useful applications are for monitoring groundwater quality and contamination.

The invention discloses a pneumatically protected anti-impurity groundwater sampling and detecting device, which comprises a mounting plate, a bobbin, a water inlet hose, a water collecting head and adetecting structure, wherein a mounting hole passes through the central part of the mounting plate; an air outlet pipe and a liquid outlet pipe are symmetrically connected with the two ends of the bobbin the water inlet hose is wound around the bobbin; one end of the water inlet hose is in communication with the bobbin; the water inlet hose is in communication with the water collecting head at the end away from the bobbin; and the bobbin is rotated by the air outlet pipe and the liquid outlet pipe which pass through to the side wall of the mounting hole and are rotatably connected. The watercollecting head is opened or closed pneumatically during the sinking process of the water collecting head, thereby preventing the blockage of sludge impurities in the water from affecting the collection of a water sample and improving the collection precision. The water inlet hose is driven by a motor to be wound or released so as to control the lifting and lowering of the water collecting head, thereby contributing to the control of the depth of water collection to achieve water collection at any depth.

The invention provides an underground water sampling method. The method comprises the following steps: pumping underground water from a monitoring well at a first flow rate by using a water pump, acquiring the liquid level height of the underground water in real time, determining the descending height value of the underground water level according to the underground water level height; when the descending height value of the liquid level of the underground water is equal to a first height value, pumping the underground water from the monitoring well at a second flow rate by utilizing the watersuction pump, and when the liquid level of the underground water is in a balanced state, pumping the underground water by using the water pump, and taking the underground water pumped at the moment as an underground water sample. According to the method, the representative underground water in the monitoring well can be pumped in a mode of changing the flow rate, so that the sampling time of theunderground water is saved, and the sampling efficiency of the underground water is improved.

The invention discloses a deep-well groundwater sampling device, comprising a sampling water tank, wherein balance weights are symmetrically arranged on the circumferential outer wall of the samplingwater tank and are in sleeve connection with the sampling water tank; a water inlet cover is arranged on the bottom of the sampling water tank; a protection cover is arranged on the top of the sampling water tank; a water inlet pipe is arranged between the water inlet cover and the protection cover and located at the circumferential outer side of the sampling water tank; an air outlet is formed inthe top of the protection cover; an inflow water hopper is arranged in the top of the inner cavity of the sampling water tank; air guiding ports are formed in the left and right side walls of the inflow water hopper; and a drain pipe is arranged on the bottom of the sampling water tank. The deep-well groundwater sampling device of the invention is reasonable in structural design; on the one hand,electrically-controlled pneumatic rods and an airbag act together to make the sampling water to keep away from the side wall of a deep well, so the possibility of collision between the sampling watertank and the wall of the deep well is lowered during water sampling; and on the other hand, the airbag and the electronically-controlled pneumatic rods can be contracted when not in use, which facilitates transporting and carrying of the deep-well groundwater sampling device.

The invention discloses a vehicular movable soil contamination robot sampling detection restoration car which comprises a chassis, an air guide sleeve, a generator set, a power control system, an airintake and exhaust noise reduction system, a crank-type lifting illumination lamp, a soil contamination control detection equipment room, a sound attenuated enclosure, a soil underground water sampling restoration integrated robot, a hydraulic automobile lifting tail plate, hydraulic support legs and a turnover step ladder. Compared with the prior art, the vehicular movable soil contamination robot sampling detection restoration car has the advantages that direct push continuous closed undisturbed soil sampling and soil restoration can be realized, Chinese soil restoration equipment and construction cost are greatly reduced, labor intensity is reduced, working efficiency is improved, and the car is widely applicable to industries such as soil survey, in-situ soil restoration, soil contamination emergency treatment and geological exploration and can be operated in high-strength, low-temperature and adverse environments with dust storm.