CN117684953B - Visual detection equipment and detection method for non-aqueous phase liquid pollutants of underground water - Google Patents
Visual detection equipment and detection method for non-aqueous phase liquid pollutants of underground water Download PDFInfo
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- CN117684953B CN117684953B CN202311688535.8A CN202311688535A CN117684953B CN 117684953 B CN117684953 B CN 117684953B CN 202311688535 A CN202311688535 A CN 202311688535A CN 117684953 B CN117684953 B CN 117684953B
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- 239000008346 aqueous phase Substances 0.000 title claims abstract description 94
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 92
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 92
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 230000000007 visual effect Effects 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 238000001179 sorption measurement Methods 0.000 claims abstract description 117
- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 239000003673 groundwater Substances 0.000 claims abstract description 24
- 238000004891 communication Methods 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 39
- 239000000356 contaminant Substances 0.000 claims description 26
- 238000012544 monitoring process Methods 0.000 claims description 21
- 239000012071 phase Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 4
- 238000011179 visual inspection Methods 0.000 claims 8
- 238000007599 discharging Methods 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 description 8
- 229920000742 Cotton Polymers 0.000 description 6
- 238000011109 contamination Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
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- 239000013049 sediment Substances 0.000 description 1
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Abstract
The invention provides visual detection equipment and a visual detection method for groundwater non-aqueous phase liquid pollutants, wherein the detection equipment comprises a control device with a display screen and a drill rod device, and the control device is in communication connection with the drill rod device; the drill rod device comprises a shell, a depth sensor, a first photographing assembly, a film discharging assembly and a film collecting assembly, wherein the depth sensor, the first photographing assembly, the film discharging assembly and the film collecting assembly are arranged on the shell, the first photographing assembly is positioned at the bottom of the shell, and the photographing surface of the first photographing assembly faces downwards; an adsorption film is connected between the film outlet component and the film collecting component; during operation, the adsorption film is transmitted to the film receiving component through the film outlet component, and in the transmission process, the adsorption film passes through the lower part of the photographing surface of the first photographing component. The visual detection equipment and the visual detection method for the non-aqueous phase liquid pollutants of the underground water can detect whether the non-aqueous phase liquid pollutants exist or not, and the pollution degree and the pollution position of the non-aqueous phase liquid pollutants.
Description
Technical Field
The invention belongs to the technical field of environmental monitoring, and particularly relates to visual detection equipment and method for non-aqueous phase liquid pollutants of groundwater.
Background
Groundwater nonaqueous phase liquid pollutants widely exist in organic pollution sites, and are difficult to detect due to complex migration behaviors, so that the groundwater nonaqueous phase liquid pollutants become a great difficulty in the field of domestic and foreign pollution sites. Non-aqueous liquid contaminants are insoluble in water, non-aqueous liquid contaminants less dense than water generally accumulate on the surface of groundwater, and non-aqueous liquid contaminants more dense than water generally deposit at the bottom of a monitoring well. At present, a sampling detection method is conventionally adopted, and due to the existence of a visual field blind area, even if non-aqueous liquid exists in a monitoring well, the sampling equipment is likely to not reach the depth position of the non-aqueous liquid, namely, the sampling link is difficult to determine whether the non-aqueous liquid is collected or not, and non-aqueous liquid pollutants can be ignored, so that the severity of groundwater pollution is covered, and therefore, a real and objective result is difficult to be brought to a non-aqueous liquid pollution field by the conventional sampling detection method.
Disclosure of Invention
The invention aims to solve the technical problems that: the visual detection equipment and the visual detection method for the non-aqueous phase liquid pollutants of the underground water can detect whether the non-aqueous phase liquid pollutants exist or not, and the pollution degree and the pollution position of the non-aqueous phase liquid pollutants.
In order to solve the technical problems, the embodiment of the invention adopts the following technical scheme:
In a first aspect, an embodiment of the present invention provides a visual detection apparatus for groundwater non-aqueous phase liquid contaminants, including a control device with a display screen and a drill rod device, where the control device is in communication connection with the drill rod device; the drill rod device comprises a shell, a depth sensor, a first photographing assembly, a film discharging assembly and a film collecting assembly, wherein the depth sensor, the first photographing assembly, the film discharging assembly and the film collecting assembly are arranged on the shell, the first photographing assembly is positioned at the bottom of the shell, and the photographing surface of the first photographing assembly faces downwards; an adsorption film is connected between the film outlet component and the film collecting component; during operation, the adsorption film is transmitted to the film receiving component through the film outlet component, and in the transmission process, the adsorption film passes through the lower part of the photographing surface of the first photographing component.
As a further improvement of the embodiment of the present invention, the adsorption film completely covers the photographing surface of the first photographing assembly.
As a further improvement of the embodiment of the invention, the two sides of the photographing surface of the first photographing assembly are provided with the first fixed transmission parts, and the adsorption film is attached to the photographing surface of the first photographing assembly for transmission under the action of the first fixed transmission parts.
As a further improvement of the embodiment of the invention, a second fixed transmission piece is also arranged between the film outlet component and the first photographic component, and the adsorption film is attached to the shell for transmission under the action of the second fixed transmission piece.
As a further improvement of the embodiment of the invention, the inlet of the membrane collecting assembly is provided with an oil absorbing piece for collecting non-aqueous phase liquid pollutants on the adsorption membrane.
As a further improvement of the embodiment of the invention, the shell is also provided with a second photographing component, and the photographing surface of the second photographing component is positioned on the side surface of the shell; in the transmission direction of the adsorption film, the photographing surface of the second photographing assembly is positioned between the photographing surface of the first photographing assembly and the film collecting assembly.
As a further improvement of the embodiment of the invention, the two sides of the photographing surface of the second photographing assembly are provided with the first fixed transmission parts, and the adsorption film is attached to the photographing surface of the second photographing assembly for transmission under the action of the first fixed transmission parts.
As a further improvement of the embodiment of the invention, a second fixed transmission piece is also arranged between the photographing surface of the first photographing component and the photographing surface of the second photographing component, and the adsorption film is attached to the shell for transmission under the action of the second fixed transmission piece.
In a second aspect, the embodiment of the invention also provides a visual detection method for the non-aqueous phase liquid pollutants of the underground water, which adopts the visual detection equipment for the non-aqueous phase liquid pollutants of the underground water; the method comprises the following steps:
Step 10, placing the drill rod device into the monitoring well from the wellhead of the monitoring well, and controlling the drill rod device to gradually descend; the depth sensor transmits the measured real-time depth data to the control device;
Step 20, when the drill rod device approaches the surface of the underground water, the membrane collecting assembly starts to work, and the adsorption membrane is driven to be transmitted to the membrane collecting assembly from the membrane outlet assembly; the first shooting assembly starts to work, and shot images are transmitted to the control device for display;
Step 30, when the drill rod device moves downwards to a position where non-aqueous phase liquid pollutant pollutes, the non-aqueous phase liquid pollutant is adsorbed on the lower surface of the adsorption film, and the first photographic component shoots an image with the non-aqueous phase liquid pollutant along with the adsorption film passing through the photographic surface of the first photographic component, and the display screen of the control device displays the image shot by the first photographic component, so that whether the non-aqueous phase liquid pollutant exists or not can be obtained; according to the color depth of the non-aqueous phase liquid pollutant in the image, the pollution degree of the non-aqueous phase liquid pollutant can be obtained; combining real-time depth data measured by the depth sensor, the pollution position of the non-aqueous phase liquid pollutant can be obtained;
step 40, the adsorption film adsorbed with the non-aqueous phase liquid pollutant is transmitted to the film receiving assembly, and the new adsorption film is continuously transmitted to the film receiving assembly from the film outlet assembly, so that the first photographing assembly is not affected to perform real-time photographing.
As a further improvement of the embodiment of the invention, the adsorption film is always attached to the surface of the shell when being transported between the film outlet component and the photographing surface of the first photographing component, so as to prevent non-aqueous phase liquid pollutants from being adsorbed to the inner side surface of the adsorption film and being transported to the photographing surface of the first photographing component along with the adsorption film; when the adsorption film passes through the photographing surface of the first photographing assembly, the adsorption film always adheres to the surface of the photographing surface of the first photographing assembly, so that non-aqueous phase liquid pollutants are prevented from entering the photographing surface of the first photographing assembly.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) The invention adopts the drill rod device to detect in the monitoring well, uses the first shooting assembly to shoot downwards, and displays on the control device in real time; by arranging the continuously updated adsorption film below the photographing surface of the first photographing assembly, non-aqueous phase liquid pollutants can be adsorbed on the lower surface of the adsorption film and are transmitted along with the adsorption film, and the first photographing assembly can photograph the non-aqueous phase liquid pollutants and can not be adsorbed on the photographing surface of the first photographing assembly to influence the subsequent photographing result; therefore, in the gradual descending process of the drill rod device, whether non-aqueous phase liquid pollutants exist or not can be obtained through the image displayed by the control device; according to the color depth of the non-aqueous phase liquid pollutant in the image, the pollution degree of the non-aqueous phase liquid pollutant can be obtained; combining real-time depth data measured by the depth sensor, a contamination location of the non-aqueous liquid contaminant can be obtained.
(2) The invention uses the second photographic component to shoot sideways and displays in real time on the control device; by arranging the continuously updated adsorption film on the photographing surface of the second photographing assembly, the non-aqueous phase liquid pollutants can be adsorbed on the lower surface of the adsorption film and transported along with the adsorption film, and the second photographing assembly can photograph the non-aqueous phase liquid pollutants and can not be adsorbed on the photographing surface of the second photographing assembly to influence the subsequent photographing result; the first photographic component can be assisted to detect the pollution condition of the non-aqueous phase liquid pollutant, and the phenomena of blockage, damage and the like at the position of the filter tube of the monitoring well and at the joint of the filter tube and the pipeline can be detected.
Drawings
FIG. 1 is a schematic structural diagram of a visual detection device for groundwater nonaqueous phase liquid pollutants according to an embodiment of the invention;
fig. 2 is an external view schematically showing the control device in fig. 1.
In the figure: the control device 1, the display screen 101, the power start button 102, the power pause button 103, the light source intensity button 104, the photographing button 105, the video button 106, the lens direction adjusting button 107, the switching button 108, the display button 109, the drill pipe device 2, the casing 21, the depth sensor 22, the first photographing assembly 23, the out-film assembly 24, the film collecting assembly 25, the adsorption film 26, the first fixed transmission member 27, the second fixed transmission member 28, the oil absorbing member 29, and the second photographing assembly 210.
Detailed Description
The following describes the technical scheme of the invention in detail.
The embodiment of the invention provides visual detection equipment for groundwater non-aqueous phase liquid pollutants, which is shown in fig. 1 and comprises a control device 1 and a drill rod device 2. The control device 1 and the drill rod device 2 are in communication connection, wired connection can be established through a cable, and wireless connection can be established through WIFI, bluetooth and the like. The drill rod device 2 is used for being put into a monitoring well for detection, and the control device 1 is used for controlling the drill rod device 2 and receiving data obtained by the drill rod device 1.
In this embodiment, the drill rod assembly 2 includes a housing 21 and a depth sensor 22, a first camera assembly 23, a film take-out assembly 24 and a film take-up assembly 25 mounted on the housing 21. The depth sensor 22 is used to measure the depth of the drill pipe lowering and to transmit the measured real-time depth data to the control device. The first photographing assembly 23 is located at the bottom of the housing 21, and the photographing surface of the first photographing assembly 23 faces downwards, so as to photograph the water body image downwards and transmit the water body image to the control device 1 for display. An adsorption film 26 is connected between the membrane outlet assembly 24 and the membrane collecting assembly 25. The membrane outlet assembly 24 and the membrane collecting assembly 25 are respectively detachably arranged on two opposite side walls of the shell, so that the membrane outlet assembly and the membrane collecting assembly are convenient to replace. Specifically, the film collecting assembly 25 includes a first box, a first reel and a motor, the first box is a closed box, and an opening through which the adsorption film passes is provided at the bottom of the first box. The first scroll rotates and sets up in first box, and the motor is connected with first scroll transmission. The membrane outlet assembly 24 comprises a second box body and a second reel, the second box body is a closed box body, and an opening for the adsorption membrane to pass through is formed in the bottom of the second box body, so that groundwater and pollutants are prevented from entering and polluting the adsorption membrane. The second reel is rotatably arranged in the second box body. The adsorption film 26 is wound around the second reel, and one end of the adsorption film is connected to the first reel through the lower side of the photographing surface of the first photographing unit 23. When the film collecting assembly 25 works, the motor of the film collecting assembly 25 works, the first reel is driven to rotate to collect the adsorption film, so that the second reel is driven to rotate through the adsorption film, the adsorption film is released, and the adsorption film is transmitted to the film collecting assembly 25 from the film outlet assembly 24. During the transport, the adsorption film 26 passes under the photographing surface of the first photographing element 23.
As shown in fig. 2, the control device 1 is provided with a display screen 101, a power start button 102, a power pause button 103, a light source intensity button 104, a photographing button 105, a video button 106, a lens direction adjustment button 107, and a display button 109. The power start button 102 and the power pause button 103 respectively control the start and pause of the motor of the film receiving assembly 25, the light source intensity button 104 controls the photographing intensity of the first photographing assembly 23, the photographing button 105 and the video recording button 106 control the photographing and video recording functions of the first photographing assembly 23, the lens direction adjusting button 107 controls the photographing direction of the first photographing assembly 23, and the display button 109 controls the display screen 101 to display the image photographed by the first photographing assembly 23 and the depth data measured by the depth sensor 22.
The drill rod device 2 is adopted to detect in a monitoring well, and the first photographing assembly 23 is used for photographing downwards and displaying on the control device 1 in real time. By arranging the continuously updated adsorption film 26 below the photographing surface of the first photographing assembly 23, the photographing of the water body image by the first photographing assembly 23 is not affected, if the nonaqueous phase liquid pollutant exists, the nonaqueous phase liquid pollutant can be adsorbed on the lower surface of the adsorption film and is transmitted along with the adsorption film, the first photographing assembly can photograph the nonaqueous phase liquid pollutant, and in addition, the nonaqueous phase liquid pollutant can not be adsorbed on the photographing surface of the first photographing assembly to affect the subsequent photographing result. During the gradual descent of the drill rod device 2, the images displayed by the control device 1 can be used for judging whether non-aqueous phase liquid pollutants exist; according to the color depth of the non-aqueous phase liquid pollutant in the image, the pollution degree of the non-aqueous phase liquid pollutant can be obtained; combining real-time depth data measured by the depth sensor, a contamination location of the non-aqueous liquid contaminant can be obtained.
Preferably, the width of the adsorption film 26 is larger than the diameter of the photographing surface of the first photographing assembly 23, so that the photographing surface of the first photographing assembly 23 can be completely covered, and the subsequent photographing can be effectively prevented from being affected by the non-aqueous phase liquid contaminant adhered to the photographing surface of the first photographing assembly 23.
Preferably, the first fixing and transmitting member 27 is disposed at both sides of the photographing surface of the first photographing assembly 23. The first stationary transmission member 27 includes a first bracket and a first roller mounted on the first bracket. Specifically, the first support includes two first branches that set up on photographic face frame, and two first branches symmetry set up in the transmission membrane both sides, and the top of two first branches is connected through first pivot, and first gyro wheel is installed in first pivot. The height of the first support is less than 5mm, the first roller presses the adsorption film on the photographing surface of the first photographing assembly, and the adsorption film is attached to the photographing surface of the first photographing assembly to move. The first fixed transmission piece 27 can play a limiting role on the adsorption film 26, prevent the adsorption film from deviating in the long-time use process, enable the adsorption film 26 to be attached to the photographing surface of the first photographing assembly for transmission, prevent gaps between the adsorption film and the photographing surface of the first photographing assembly, and further effectively prevent non-aqueous phase liquid pollutants from entering the space between the adsorption film 26 and the photographing surface and being attached to the photographing surface to affect subsequent photographing.
Preferably, a second fixed transmission member 28 is disposed between the film discharging assembly 24 and the first photographing assembly 23. The second stationary transport member 28 includes a second bracket and a second roller mounted on the second bracket. Specifically, the second support includes two second branches that set up on the casing, and two second branches symmetry set up in the transmission membrane both sides, and the top of two second branches is connected through the second pivot, and the second gyro wheel is installed in the second pivot. The height of the second support is less than 5mm, the second roller presses the adsorption film on the shell, and the adsorption film is attached to the surface of the shell to move. The second fixing and transporting member 28 makes the adsorbing film 26 come out from the film discharging assembly 24 and then be transported to the photographing surface of the first photographing assembly, so as to prevent the non-aqueous phase liquid contaminant from being adhered to the inner surface of the adsorbing film 26, and then being adhered to the photographing surface when being transported to the first photographing assembly 23, thereby affecting the subsequent photographing.
As a preferred example, the inlet of the membrane collecting assembly 25 is provided with an oil absorbing member 29. Specifically, the oil absorbing member 29 includes a box body, a film outlet slit and a film inlet slit through which the adsorption film passes are respectively provided at the top and bottom ends of the box body, an oil absorbing cotton is provided between the film outlet slit and the film inlet slit in the box body, and a strip slit through which the adsorption film passes is provided in the oil absorbing cotton. The box body of the oil absorbing member 29 is detachably mounted at the bottom of the first box body of the membrane collecting assembly 25, and the membrane outlet gap is opposite to the opening of the membrane collecting assembly 25. The adsorption film with the non-aqueous phase liquid pollutant is conveyed to the lower part of the oil absorbing piece 29 after passing through the photographing surface of the first photographing assembly 23, the adsorption film enters the box body from the film inlet gap and passes through the long strip gap of the oil absorbing cotton, the non-aqueous phase liquid pollutant on the adsorption film is absorbed by the oil absorbing cotton and is collected in the box body, at the moment, no non-aqueous phase liquid pollutant or only a little non-aqueous phase liquid pollutant remains on the adsorption film, the adsorption film enters the film collecting assembly from the film outlet gap and the opening of the film collecting assembly 25, and the adsorption film is wound on the first reel. The non-aqueous phase liquid pollutant on the adsorption film can be effectively prevented from being brought to the lower layer to pollute the underground water of the lower layer in the descending process of the drill rod.
Preferably, the housing 21 is further provided with a second photographing assembly 210, and the photographing surface of the second photographing assembly 210 is located at the side of the housing. In the transport direction of the adsorption film 26, the photographing surface of the second photographing element 210 is located between the photographing surface of the first photographing element and the film receiving element 25. After the adsorption film is output from the film outlet component, the adsorption film passes through the photographing surface of the first photographing component 23, passes through the photographing surface of the second photographing component 210, and finally enters the film collecting component.
The embodiment of the invention uses the second photographing assembly to photograph sideways and displays the photographed sideways on the control device in real time. The adsorption film is transported on the photographing surface of the second photographing assembly, namely, the adsorption film is continuously updated, the non-aqueous phase liquid pollutants are adsorbed on the lower surface of the adsorption film and transported along with the adsorption film, the second photographing assembly can photograph the non-aqueous phase liquid pollutants, and the non-aqueous phase liquid pollutants are not adsorbed on the photographing surface of the second photographing assembly to influence the subsequent photographing result. The second photographic assembly shoots side images, so that the first photographic assembly can be assisted to detect the pollution condition of non-aqueous phase liquid pollutants, and the phenomena of blockage, breakage and the like at the position of a filter tube of a monitoring well and at the joint of the filter tube and a pipeline can be detected.
Preferably, the first fixing and transmitting member 27 is disposed at both sides of the photographing surface of the second photographing assembly. The first stationary transmission member 27 includes a first bracket on which the first roller is mounted and a second roller. Specifically, the first support includes two first branches that set up on photographic face frame, and two first branches symmetry set up in the transmission membrane both sides, and the top of two first branches is connected through first pivot, and first gyro wheel is installed in first pivot. The height of the first support is less than 5mm, the first roller presses the adsorption film on the photographing surface of the second photographing assembly, and the adsorption film is attached to the photographing surface of the second photographing assembly to move. The first fixed transmission piece 27 can play a limiting role on the adsorption film 26, prevent the adsorption film from deviating in the long-time use process, enable the adsorption film 26 to be attached to the photographing surface of the second photographing assembly for transmission, prevent gaps between the adsorption film 26 and the photographing surface of the second photographing assembly, and further effectively prevent non-aqueous phase liquid pollutants from entering the space between the adsorption film 26 and the photographing surface and being attached to the photographing surface to affect subsequent photographing.
Preferably, a second fixed transmission member 28 is disposed between the photographing surface of the first photographing element 23 and the photographing surface of the second photographing element 210. The second stationary transport member 28 includes a second bracket and a second roller mounted on the second bracket. Specifically, the second support includes two second branches that set up on the casing, and two second branches symmetry set up in the transmission membrane both sides, and the top of two second branches is connected through the second pivot, and the second gyro wheel is installed in the second pivot. The height of the second support is less than 5mm, the second roller presses the adsorption film on the shell, and the adsorption film is attached to the surface of the shell to move. The second fixing and conveying member 28 makes the adsorbing film 26 pass through the photographing surface of the first photographing assembly and then continuously adhere to the housing for conveying until the adsorbing film is conveyed to the photographing surface of the second photographing assembly, and no gap exists between the adsorbing film 26 and the housing, so that the non-aqueous phase liquid contaminant is prevented from being stained on the inner side surface of the adsorbing film 26, and then is stained on the photographing surface when conveyed to the second photographing assembly, and the subsequent photographing is affected.
The working process of the visual detection device for the non-aqueous phase liquid pollutants of the groundwater in the preferred embodiment is as follows:
the drill rod device 2 is put into the monitoring well from the wellhead of the monitoring well, and the drill rod device 2 is controlled to gradually descend. The depth sensor 22 transmits the measured depth data to the control device 1, and the real-time depth of the drill rod device 2 is displayed on the display screen of the control device 1.
When the drill rod device 2 approaches the underground water level, the power starting button 102 of the control device 1 is operated to control the motor of the membrane collecting assembly 25 to start, the first reel is driven to rotate to collect the adsorption membrane, the second reel is driven to rotate, the adsorption membrane is released, and the adsorption membrane is transmitted from the membrane outlet assembly 24 to the membrane collecting assembly 25. The photographing button 105 or the video recording button 106 is operated to control the first photographing assembly 23 and the second photographing assembly 210 to start photographing and video recording functions, the first photographing assembly 23 photographs an image below the drill pipe device, the second photographing assembly 210 photographs an image of a side surface of the drill pipe device, and the first photographing assembly 23 and the second photographing assembly 210 transmit the photographed image to the control device. The switching button 108 of the control device 1 is operated to control the display screen to switch and display the image photographed by the first photographing module 23 or the second photographing module 210.
When the drill rod device 2 moves down to the position where the non-aqueous phase liquid pollutant is polluted, the non-aqueous phase liquid pollutant is adsorbed on the lower surface of the adsorption film, and the first photography component 23 and the second photography component 210 shoot images with the non-aqueous phase liquid pollutant along with the adsorption film passing through the photography surfaces of the first photography component 23 and the second photography component 210, and the images are displayed in the display screen of the control device, so that whether the non-aqueous phase liquid pollutant is polluted or not can be seen. The pollution degree of the non-aqueous phase liquid pollutant can be obtained according to the color shade of the non-aqueous phase liquid pollutant in the image. In combination with the real-time depth data measured by the depth sensor 22, the contamination location of the non-aqueous liquid contaminant can be obtained. The adsorption film with the non-aqueous phase liquid pollutant adsorbed thereon is conveyed to the film collecting assembly 25, enters the box body from the film inlet gap of the oil absorbing member 29 and passes through the strip gap of the oil absorbing cotton, the non-aqueous phase liquid pollutant on the adsorption film is adsorbed by the oil absorbing cotton and is collected in the box body, at the moment, no non-aqueous phase liquid pollutant or only a little non-aqueous phase liquid pollutant remains on the adsorption film, enters the film collecting assembly from the film outlet gap and the opening of the film collecting assembly 25, and is wound on the first reel. The new adsorption film is continuously transmitted from the film outlet assembly 24 to the film collecting assembly 25, and the first photographing assembly 23 and the second photographing assembly 210 perform real-time photographing.
The drill rod device 2 slowly moves down in the monitoring well, images of the lower side of the drill rod device are shot through the first shooting component 23, images of the side face of the drill rod device are shot through the second shooting component 210, the images are displayed on the display screen, whether the monitoring well bottom is covered by sediment, silt and other substances or not can be determined, the well construction structure and the specific well construction depth of the monitoring well are monitored, and whether the filter tube position of the monitoring well, the joint of the filter tube and the pipeline and the like are blocked or damaged or not is determined.
The embodiment of the invention also provides a visual detection method for the groundwater non-aqueous phase liquid pollutants, and the visual detection equipment for the groundwater non-aqueous phase liquid pollutants is adopted. The detection method comprises the following steps:
step 10, the drill rod device 2 is put into the monitoring well from the wellhead of the monitoring well, and the drill rod device 2 is controlled to gradually descend. The depth sensor 22 transmits the measured real-time depth data to the control device 1.
In step 20, when the drill rod device 2 approaches the surface of groundwater, the membrane collecting assembly 25 starts to work, and the adsorption membrane 26 is driven to be transmitted to the membrane collecting assembly 25 by the membrane outlet assembly 24. The first photographing module 23 starts to operate and transmits the photographed image to the control device to display.
In step 30, when the drill rod device 2 moves down to the position where the non-aqueous phase liquid pollutant is polluted, the non-aqueous phase liquid pollutant is adsorbed on the lower surface of the adsorption film, and as the adsorption film passes through the photographing surface of the first photographing assembly 23, the first photographing assembly 23 photographs an image with the non-aqueous phase liquid pollutant, and the display screen of the control device displays the image photographed by the first photographing assembly, so that whether the non-aqueous phase liquid pollutant is polluted or not can be seen. The pollution degree of the non-aqueous phase liquid pollutant can be obtained according to the color shade of the non-aqueous phase liquid pollutant in the image. In combination with the real-time depth data measured by the depth sensor 22, the contamination location of the non-aqueous liquid contaminant can be obtained.
Step 40, the adsorption film with the non-aqueous phase liquid contaminant adsorbed thereon is transferred to the film collecting assembly 25, and the new adsorption film is continuously transferred from the film outlet assembly 24 to the film collecting assembly 25 without affecting the real-time photographing performed by the first photographing assembly 23.
Preferably, the absorbent membrane 26 always conforms to the housing surface during transport between the exit membrane assembly 24 and the imaging surface of the first imaging assembly, preventing non-aqueous liquid contaminants from being absorbed onto the inside surface of the absorbent membrane 26 and transported with the absorbent membrane onto the imaging surface of the first imaging assembly. When the adsorption film 26 passes through the photographing surface of the first photographing element, it always adheres to the surface of the photographing surface of the first photographing element, preventing non-aqueous phase liquid contaminants from entering the photographing surface of the first photographing element.
The method of the embodiment of the invention adopts the drill rod device 2 to detect in the monitoring well, and uses the first photographing assembly 23 to photograph downwards and display on the control device 1 in real time. By arranging the continuously updated adsorption film 26 below the photographing surface of the first photographing assembly 23, the photographing of the water body image by the first photographing assembly 23 is not affected, if the nonaqueous phase liquid pollutant exists, the nonaqueous phase liquid pollutant can be adsorbed on the lower surface of the adsorption film and is transmitted along with the adsorption film, the first photographing assembly can photograph the nonaqueous phase liquid pollutant, and in addition, the nonaqueous phase liquid pollutant can not be adsorbed on the photographing surface of the first photographing assembly to affect the subsequent photographing result. So that during the gradual lowering of the drill rod device 2, it can be seen from the images displayed by the control device 1 whether non-aqueous liquid contaminants are present; according to the color depth of the non-aqueous phase liquid pollutant in the image, the pollution degree of the non-aqueous phase liquid pollutant can be obtained; combining real-time depth data measured by the depth sensor, a contamination location of the non-aqueous liquid contaminant can be obtained.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the specific embodiments described above, and that the above specific embodiments and descriptions are provided for further illustration of the principles of the present invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The visual detection equipment for the non-aqueous phase liquid pollutants of the underground water is characterized by comprising a control device (1) with a display screen and a drill rod device (2), wherein the control device (1) is in communication connection with the drill rod device (2); the drill rod device (2) comprises a shell (21) and a depth sensor (22), a first photographing assembly (23), a film outlet assembly (24) and a film collecting assembly (25) which are arranged on the shell (21), wherein the first photographing assembly (23) is positioned at the bottom of the shell (21), and the photographing surface of the first photographing assembly (23) faces downwards; an adsorption film (26) is connected between the film outlet assembly (24) and the film collecting assembly (25); during operation, the adsorption film (26) is conveyed to the film collecting assembly (25) through the film outlet assembly (24), and in the conveying process, the adsorption film (26) passes through the lower part of the photographing surface of the first photographing assembly (23).
2. The apparatus for visual inspection of liquid contaminants in groundwater phase according to claim 1 characterized in that said adsorption film (26) covers entirely the photographic face of the first photographic assembly (23).
3. The visual inspection apparatus for groundwater non-aqueous phase liquid contaminant according to claim 1, wherein the two sides of the photographing surface of the first photographing assembly (23) are provided with first fixing and transmitting members (27), and the adsorption film (26) is attached to the photographing surface of the first photographing assembly (23) for transmission under the action of the first fixing and transmitting members (27).
4. A visual inspection apparatus for non-aqueous phase liquid contaminants in groundwater according to claim 3, characterized in that a second fixed transmission member (28) is arranged between said film outlet assembly (24) and said first photographing assembly (23), and said adsorption film (26) is attached to the housing for transmission under the action of said second fixed transmission member (28).
5. The visual inspection device for non-aqueous phase liquid contaminants in groundwater according to claim 1, wherein an oil absorbing member (29) is provided at an inlet of said membrane collecting assembly (25) for collecting non-aqueous phase liquid contaminants on the adsorption membrane (26).
6. The visual inspection apparatus for non-aqueous phase liquid contaminants in groundwater according to claim 1, characterized in that said housing (21) is further provided with a second photographing assembly (210), a photographing surface of the second photographing assembly (210) being located at a side of the housing; in the transport direction of the adsorption film (26), the photographing surface of the second photographing element (210) is located between the photographing surface of the first photographing element and the film collecting element (25).
7. The visual inspection apparatus for groundwater non-aqueous phase liquid contaminants according to claim 6, wherein two sides of the photographing surface of the second photographing assembly are provided with first fixing and transmitting members (27), and the adsorption film (26) is attached to the photographing surface of the second photographing assembly for transmission under the action of the first fixing and transmitting members (27).
8. The visual inspection apparatus for groundwater non-aqueous phase liquid contaminant according to claim 7, wherein a second fixed transmission member (28) is disposed between the photographing surface of the first photographing assembly (23) and the photographing surface of the second photographing assembly (210), and the adsorption film (26) is attached to the housing for transmission under the action of the second fixed transmission member (28).
9. A visual detection method of groundwater non-aqueous phase liquid pollutants, which is characterized in that the visual detection device of groundwater non-aqueous phase liquid pollutants is adopted according to any one of claims 1 to 8; the method comprises the following steps:
Step 10, placing the drill rod device (2) into the monitoring well from the wellhead of the monitoring well, and controlling the drill rod device (2) to gradually descend; the depth sensor (22) transmits the measured real-time depth data to the control device (1);
step 20, when the drill rod device (2) approaches the ground water level, the film collecting assembly (25) starts to work, and the adsorption film (26) is driven to be transmitted to the film collecting assembly (25) from the film outlet assembly (24) through the photographing surface of the first photographing assembly (23); the first shooting assembly (23) starts working, and the shot image is transmitted to the control device for display;
Step 30, when the drill rod device (2) moves downwards to a position where non-aqueous phase liquid pollutant pollutes, the non-aqueous phase liquid pollutant is adsorbed on the lower surface of the adsorption film, the first photography component (23) photographs to obtain an image with the non-aqueous phase liquid pollutant along with the adsorption film passing through the photography surface of the first photography component (23), and the display screen of the control device displays the image photographed by the first photography component, so that whether the non-aqueous phase liquid pollutant exists or not can be obtained; according to the color depth of the non-aqueous phase liquid pollutant in the image, the pollution degree of the non-aqueous phase liquid pollutant can be obtained; combining real-time depth data measured by the depth sensor (22) to obtain a pollution position of the non-aqueous phase liquid pollutant;
Step 40, the adsorption film adsorbed with the non-aqueous phase liquid pollutant is transmitted to the film collecting component (25), and the new adsorption film is continuously transmitted to the film collecting component (25) from the film outlet component (24), so that the first photographing component (23) is not affected to perform real-time photographing.
10. The visual inspection method of groundwater non-aqueous phase liquid contaminant according to claim 9, wherein the adsorption film (26) always contacts the housing surface when being transported between the film-out assembly (24) and the photographing surface of the first photographing assembly, preventing the non-aqueous phase liquid contaminant from being adsorbed to the inner side surface of the adsorption film (26) and being transported to the photographing surface of the first photographing assembly along with the adsorption film; when the adsorption film (26) passes through the photographing surface of the first photographing assembly, the adsorption film always clings to the surface of the photographing surface of the first photographing assembly, and non-aqueous phase liquid pollutants are prevented from entering the photographing surface of the first photographing assembly.
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