CN103115860B - Micro-nano air-bubble observation system and method in porous medium - Google Patents
Micro-nano air-bubble observation system and method in porous medium Download PDFInfo
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Abstract
The present invention proposes micro-nano air-bubble observation system and method in a kind of porous medium, wherein, this system comprises: model casing, the spherical shaped transparent resin material of simulation porous medium is filled with in model casing, model casing has water filling port, for injecting and holding the water body being rich in micro-nano bubble of simulated groundwater, and each of model casing uses different materials and color, improves the imaging definition of micro-nano bubble in porous medium pore water to greatest extent; Laser instrument, laser instrument is positioned at the top of model casing, for providing the sheet laser needed during observation; Camera and camera lens, camera and camera lens are positioned at the side of model casing, for observing micro-nano bubble in porous medium; Picture collection and processing module, picture collection and processing module are connected with camera, carry out the acquisition and processing of picture.The present invention has simple and feasible, the advantage that emulator is high, accuracy of observation is high.
Description
Technical field
The invention belongs to Hydraulic and Hydro-Power Engineering and field of environmental engineering, be specifically related to micro-nano air-bubble observation system and method in a kind of porous medium.
Background technology
Underground water is the water retained in the hole of the soil body (porous medium).Groundwater resource are important component parts of global water resources, and under the condition of China's surface water severe contamination, groundwater resource have extremely important effect for economy and social development.The much regional underground water of China suffers the pollution of toxic organics in various degree.Country " 12 " planning proposition " will strengthen environment protection ", solves " the outstanding environmental problem of the infringement such as soil pollution health of the masses ", " descending water prevention and cure of pollution intentinonally "." national pollution prevention plan (2011-the year two thousand twenty) " of issuing in October, 2011 is pointed out to want " preliminary containment quality of groundwater degradating trend ", " strengthen the supervision of priority industry industry groundwater environment ", " in a planned way accelerating to advance groundwater contamination reparation ".The development and application of the polluted underground water innovation recovery technique of environmental friendliness and efficient energy-saving is the important channel of Chinese national economy and social sustainable development.
Natural Attenuation method and bio-ventilation are the routine techniquess of organic contamination underground water in-situ immobilization.Natural Attenuation method is the biology, chemistry and the physical process that utilize nature to exist under suitable conditions, reduces pollutant load in soil and groundwater, toxicity, movability.Place natural degradation ability strong depend-ence environmental baseline, because oxygen supply condition is poor, the electron accepter of existence often cannot meet the requirement of microbial degradation reaction, and aerobic degradation effect is suppressed, and reaction rate is slow.Bio-ventilation carries out aeration by vacuum or pressurization to contaminated soil, the oxygen concentration in soil is increased, thus has promoted the activity of sample microorganism, improves the degradation efficiency of pollutant in soil.But air generally moves with the separated foam form of microchannel or millimeter-centimetre-sized particle diameter in underground water in bio-ventilation process, coverage is less, and oxygen supply effect is poor, and aerobic degradation ability is not not fully exerted, and thus repair is limited.
Micro-nano bubble refers to the general designation of micron and nanometer scale bubble in liquid, and its diameter is generally less than 60 μm, and micron bubble diameter is between 1-60 μm, and the diameter of nano bubble is then below 1 μm.In current water body, micro-nano bubble formation technology is full-fledged.In water body, millimeter-centimetre-sized macroscopic view bubble will rise rapidly, and break at water surface place under buoyancy; Micro-nano bubble is then because diameter is less, and in water body, the residence time is longer.Therefore micro-nano bubble can with ground water movement, and migration coverage is much larger than common blister.Due to the effect of water air interface tension force, bubble inner pressure is comparatively large, and its high-solvency can be the dissolved oxygen DO that water body provides high-load.Meanwhile, micro-nano bubble liquid-gas interface is electronegative, can interact with specific pollutant, and the free radical produced during micro-nano bubbles burst and vibration wave also can promote the removal of pollutant.
Micro-nano bubble oxygen supply is effective, the duration long, coverage is large, can make up the limitation of conventional in situ recovery technique, promotes microbiological deterioration, repairs, have huge application prospect to organic contamination underground water.Therefore probe into the movement mechanism of micro-nano bubble in porous medium and there is Important Academic value and engineering practical value.But there is no relevant observational record technological means in prior art.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.For this reason, one object of the present invention be to propose one have simple and feasible, emulator is high, micro-nano air-bubble observation system in the medium of accuracy of observation much higher hole.Another object of the present invention be to propose one have simple and feasible, emulator is high, micro-nano air-bubble observation method in the medium of accuracy of observation much higher hole.
According to air-bubble observation system micro-nano in the porous medium of the embodiment of the present invention, comprise with lower part: model casing, the spherical shaped transparent resin material of simulation porous medium is filled with in described model casing, described model casing has water filling port, for injecting and holding the water body being rich in micro-nano bubble of simulated groundwater, and each of model casing uses different materials and color, improve the imaging definition of micro-nano bubble in porous medium pore water to greatest extent; Laser instrument, described laser instrument is positioned at the top of described model casing, for providing the light source needed during observation; Camera and camera lens, described camera and camera lens are positioned at the side of described model casing, for observing micro-nano bubble in porous medium; Picture collection and processing module, described picture collection and processing module are connected with described camera, carry out the acquisition and processing of picture.
Alternatively, also comprise: laser stent, described laser stent is used for laser instrument described in fixed support; And three-dimensional adjustable support, described three-dimensional adjustable support is used for camera and camera lens described in fixed support.
Alternatively, the index matching of described spherical shaped transparent resin material and water.
Alternatively, described spherical shaped transparent resin material mean grain size is 0.6-1.0mm, and interfacial charge character is mated with soil particle.
Alternatively, described model casing is rectangular parallelepiped, define is inspection surface close to described camera and camera lens, other faces are defined as background surfaces, left side wall, right side wall, bottom surface respectively, wherein said inspection surface uses ultra-clear glasses, other face uses organic glass, and described background surfaces smears into black, and white is smeared in described left side wall, right side wall and bottom surface.
Alternatively, described laser instrument also comprises: laser lens, and the light that described laser instrument sends is corrected to sheet by described laser lens, and the laser linewidth of described laser instrument is less than the depth of field of described camera.
Alternatively, described camera is the CCD camera of ISO, and the illumination of described camera imaging is more than or equal to 0.00002Lux; Described camera lens is industrial Zoom lens, can to the bubble imaging between 900 nanometers to 60 micron.
Alternatively, described picture collection and processing module adopt software, determine Adsorption law by observing bubble adsorption rate on the porous material, life period and whether there is adsorption/desorption phenomenon etc.; By analyzing the pixel size of bubble diagram picture and gray-scale value, determine the particle diameter of bubble in image; By multiple images taken continuously, the movement velocity of different bubble in computed image.
According to air-bubble observation method micro-nano in the porous medium of the embodiment of the present invention, micro-nano air-bubble observation system in the porous medium adopting the present invention to propose, comprise the following steps: S1. loads spherical shaped transparent resin material in described model casing, inject the water body being rich in micro-nano bubble; S2. adopt described laser instrument to be the illumination of described water body, adopt described camera and camera lens to observe micro-nano bubble in described porous medium pore water; And S3. picture collection and processing module control camera and camera lens gathers image and carries out analyzing and processing, obtain the characterization of adsorption of micro-nano bubble, domain size distribution and movement locus.
The invention provides grain diameter measurement and the movement observations system of micro-nano bubble in a kind of porous medium, realize measuring the particle diameter of bubble micro-nano in porous medium, absorption and kinetic characteristic by model casing, laser instrument, CCD camera, camera lens, three-dimensional adjustable support and image processing software.In porous medium of the present invention micro-nano air-bubble observation system and method at least tool have the following advantages:
1, the thought of the spherical transparent resin material simulation soil body is used.The refractive index of this material and water is basically identical, is therefore convenient to the adsorption effect directly being observed micro-nano bubble and this spheroidal material by optical observation system.This material mean grain size is 0.84mm, interfacial charge character and soil particle similar, therefore can simulate actual soil particle in nature.
2, the glass molds molding box of particular design is used to carry out the thought of micro-nano air-bubble observation in porous medium.The inspection surface of glass molds molding box uses the ultra-clear glasses that light transmission is good to make, and makes camera imaging clear.Other all uses organic glass material.Background surfaces smears into black, strengthens the contrast effect of bubble and background.White is all smeared in other organic glass face, strengthens the diffuse effect of micro-nano bubble in the porous medium of hole, improves micro-nano bubble brightness.The selection of material and color adds the imaging definition of micro-nano bubble to greatest extent.
3, laser instrument is used to provide high-power sheet light source, to illuminate the thought of micro-nano bubble in porous medium.The LASER Light Source of the 532nm that uses peak power to be 2W, and use eyeglass that its light is corrected to sheet at laser exit, illuminates a certain plane in porous medium, has concentrated laser energy and has avoided the appearance of bubble ghost phenomena.In addition, the live width controlling sheet laser, at below 1mm, makes live width be less than the camera depth of field, avoids the bubble outside the camera depth of field to be illuminated to cause to become the virtual image in CCD camera.
4, use the CCD camera of ISO and industrial Zoom lens, the bubble in porous medium is carried out to the thought of imaging.Micro-nano bubble diameter is little, poor to the reflecting effect of light, therefore except improving the brightness of bubble, also needs the CCD camera of high photosensitivity.Institute's use camera is minimum can carry out imaging when illumination 0.00002Lux to object.Can realize the bubble imaging between 900 nanometers to 60 micron with the use of Zoom lens.
5, three-dimensional adjustable support is used to put the thought of camera.By three-dimensional adjustable support, continuous, the fine adjustment to observation position can be realized, and accurate adjustment is carried out in focusing.
6, obtained image carries out characterization of adsorption analysis thought to micro-nano bubble is passed through.Adsorption law is determined by observing bubble adsorption rate on the porous material, life period and whether there is adsorption/desorption phenomenon etc.
7, image processing software is used to analyze bubble diagram picture, with the thought of the particle diameter and movement velocity that obtain bubble.By analyzing the pixel size of bubble diagram picture and gray-scale value, the particle diameter of bubble in image can be determined.By multiple images taken continuously, can the movement velocity of different bubble in computed image.
In sum, in porous medium of the present invention, micro-nano air-bubble observation system and method has simple and feasible, the advantage that emulator is high, accuracy of observation is high.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the schematic diagram of micro-nano air-bubble observation system in the porous medium of the embodiment of the present invention;
Fig. 2 is the schematic diagram of the spherical shaped transparent resin material of the present invention's specific embodiment;
Fig. 3 is the process flow diagram of micro-nano air-bubble observation method in the porous medium of the embodiment of the present invention;
Fig. 4 is the front schematic view of the model casing of the present invention's specific embodiment;
Fig. 5 is the schematic perspective view of the model casing of the present invention's specific embodiment.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature immediately below second feature and tiltedly below, or only represent that fisrt feature level height is less than second feature.
The present invention relates to a kind of system for air-bubble observation micro-nano in porous medium, the measurement of particle diameter, absorption and kinetic characteristic can be carried out 900 nanometers in water to the bubble of 60 microns.Realize measuring the particle diameter of bubble micro-nano in porous medium, absorption and kinetic characteristic by model casing, laser instrument, CCD camera, camera lens, three-dimensional adjustable support and image processing software.This system will be used for the research of micro-nano bubble property in porous medium, promotes China's water pollution control, for related science research provides experimental data.
As shown in Figure 1, according to air-bubble observation system micro-nano in the porous medium of the embodiment of the present invention, comprise with lower part: model casing 1, model casing 1 is filled with spherical shaped transparent resin material (as shown in Figure 2) to simulate porous medium (i.e. the soil body), and model casing 1 has water filling port, for injecting and holding the water body being rich in micro-nano bubble of simulated groundwater, and each of model casing 1 uses different materials and color, improves the imaging definition of micro-nano bubble in water body to greatest extent; Laser instrument 2, laser instrument 2 is positioned at the top of model casing 1, for providing the light source needed during observation; Camera 4 and camera lens 5, camera 4 and camera lens 5 are positioned at the side of model casing 1, for observing micro-nano bubble in porous medium; Picture collection and processing module 7, picture collection and processing module 7 are connected with camera 4, carry out the acquisition and processing of picture.
Alternatively, also comprise: laser stent 3, laser stent 3 is for fixed support laser instrument 2; And three-dimensional adjustable support 6, three-dimensional adjustable support 6 is for fixed support camera 4 and camera lens 5.Camera 4 and camera lens 5 are placed on three-dimensional adjustable support 6, continuous, the fine adjustment to observation position and focal length can be realized.
Alternatively, the refractive index of this spherical shaped transparent resin material and water is basically identical, is convenient to the adsorption effect directly being observed micro-nano bubble and this spheroidal material by optical observation system.This spherical shaped transparent resin material mean grain size is 0.6-1.0mm, be preferably 0.84mm, interfacial charge character and soil particle similar, therefore can simulate actual soil particle in nature.
Alternatively, model casing 1 is rectangular parallelepiped, as shown in Figure 4 and Figure 5, bottom model casing and sidewall have inlet respectively, diameter 4mm, the position of inlet is as shown in the figure.Model casing 1 has five faces, and definition is inspection surface 8 wherein close to camera 4 and camera lens 5, and other faces are defined as background surfaces 9, left side wall 10, right side wall 11, bottom surface 12 respectively.Wherein inspection surface 8 uses ultra-clear glasses, and other face uses organic glass.Background surfaces 9 smears into black, and white is smeared in left side wall 10, right side wall 11 and bottom surface 12.Background surfaces 9 smears into black, strengthens the contrast effect of bubble and background.White is all smeared in other organic glass face, strengthens the diffuse effect of micro-nano bubble in porous medium, improves micro-nano bubble brightness.The material of model casing 1 and the selection of color add the imaging definition of micro-nano bubble in porous medium to greatest extent.
Alternatively, laser instrument 2 also comprises: laser lens, and the light that laser instrument 1 sends is corrected to sheet by laser lens, and the laser linewidth of laser instrument 1 is less than the depth of field of camera.In one embodiment of the invention, use the laser instrument 1 of the 532nm that peak power is 2W, and use eyeglass that its light is corrected to sheet at laser exit, illuminate a certain plane in water body, instead of whole water body, concentrate laser energy and avoided the appearance of bubble ghost phenomena.In addition, the live width controlling sheet laser, at below 1mm, makes live width be less than the camera depth of field, avoids the bubble outside the camera depth of field to be illuminated to cause to become the virtual image on camera.
Alternatively, camera be the CCD camera of ISO, the minimal illumination of camera imaging is less than or equal to 0.00002Lux.The CCD camera (minimal illumination 0.00002Lux still can imaging) of ISO is used to coordinate industrial Zoom lens, to observe the bubble between 900 nanometers to 60 micron.
Picture collection and processing module 7 are generally the example, in hardware such as workstation, computer and occur, the picture of shooting can use image processing software carry out the computing of particle diameter, absorption and kinetic characteristic by it.Particularly, by analyzing the pixel size of bubble diagram picture and gray-scale value, the particle diameter of bubble in image can be determined.By multiple images taken continuously, can the movement velocity of different bubble in computed image.In addition, Adsorption law can also be determined by observing bubble adsorption rate on the porous material, life period and whether there is adsorption/desorption phenomenon etc.
As shown in Figure 3, according to air-bubble observation method micro-nano in the porous medium of the embodiment of the present invention, micro-nano air-bubble observation system in the porous medium adopting the present invention to propose, comprise the following steps: S1. loads spherical shaped transparent resin material in model casing, inject the water body being rich in micro-nano bubble, to simulate the underground water in the soil body; S2. adopt laser instrument to be water body illumination, adopt the micro-nano bubble in camera and camera lens observation porous medium pore water; And S3. picture collection and processing module control camera and camera lens gathers image and carries out analyzing and processing, obtain the characterization of adsorption of micro-nano bubble, domain size distribution and movement locus.
To sum up, in porous medium of the present invention, the core concept of micro-nano air-bubble observation system and method is: use glass molds molding box to inject micro-nano air-bubble, wherein the inspection surface of glass molds molding box uses the ultra-clear glasses that light transmission is good to make, and other all uses organic glass.Background surfaces smears into black, and white is all smeared in other organic glass face, strengthens the diffuse effect of micro-nano bubble in porous medium.Use laser instrument to provide high power sheet light source, illuminate the micro-nano bubble in water body, use the CCD camera of ISO to coordinate industrial Zoom lens, to observe the bubble between 900 nanometers to 60 micron.Camera and camera lens are placed on three-dimensional adjustable support, realize the adjustment of observation position and focal length.Image processing software is used to carry out the computing of particle diameter, absorption and kinetic characteristic in the picture of shooting.
In porous medium of the present invention, at least tool of micro-nano air-bubble observation system and method has the following advantages:
1, the thought of the spherical transparent resin material simulation soil body is used.The refractive index of this material and water is basically identical, is therefore convenient to the adsorption effect directly being observed micro-nano bubble and this spheroidal material by optical observation system.This material mean grain size is 0.84mm, interfacial charge character and soil particle similar, therefore can simulate actual soil particle in nature.
2, the glass molds molding box of particular design is used to carry out the thought of micro-nano air-bubble observation in porous medium.The inspection surface of glass molds molding box uses the ultra-clear glasses that light transmission is good to make, and makes camera imaging clear.Other all uses organic glass material.Background surfaces smears into black, strengthens the contrast effect of bubble and background.White is all smeared in other organic glass face, strengthens the diffuse effect of micro-nano bubble in the porous medium of hole, improves micro-nano bubble brightness.The selection of material and color adds the imaging definition of micro-nano bubble to greatest extent.
3, laser instrument is used to provide high-power sheet light source, to illuminate the thought of micro-nano bubble in porous medium.The LASER Light Source of the 532nm that uses peak power to be 2W, and use eyeglass that its light is corrected to sheet at laser exit, illuminates a certain plane in porous medium, has concentrated laser energy and has avoided the appearance of bubble ghost phenomena.In addition, the live width controlling sheet laser, at below 1mm, makes live width be less than the camera depth of field, avoids the bubble outside the camera depth of field to be illuminated to cause to become the virtual image in CCD camera.
4, use the CCD camera of ISO and industrial Zoom lens, the bubble in porous medium is carried out to the thought of imaging.Micro-nano bubble diameter is little, poor to the reflecting effect of light, therefore except improving the brightness of bubble, also needs the CCD camera of high photosensitivity.Institute's use camera is minimum can carry out imaging when illumination 0.00002Lux to object.Can realize the bubble imaging between 900 nanometers to 60 micron with the use of Zoom lens.
5, three-dimensional adjustable support is used to put the thought of camera.By three-dimensional adjustable support, continuous, the fine adjustment to observation position can be realized, and accurate adjustment is carried out in focusing.
6, obtained image carries out characterization of adsorption analysis thought to micro-nano bubble is passed through.Adsorption law is determined by observing bubble adsorption rate on the porous material, life period and whether there is adsorption/desorption phenomenon etc.
7, image processing software is used to analyze bubble diagram picture, with the thought of the particle diameter and movement velocity that obtain bubble.By analyzing the pixel size of bubble diagram picture and gray-scale value, the particle diameter of bubble in image can be determined.By multiple images taken continuously, can the movement velocity of different bubble in computed image.
In sum, in porous medium of the present invention, micro-nano air-bubble observation system and method has simple and feasible, the advantage that emulator is high, accuracy of observation is high.
It should be noted that, describe and can be understood in process flow diagram or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.
Claims (4)
1. a micro-nano air-bubble observation system in porous medium, is characterized in that, comprise with lower part:
Model casing, the spherical shaped transparent resin material of simulation porous medium is filled with in described model casing, wherein, the index matching of described spherical shaped transparent resin material and water, described spherical shaped transparent resin material mean grain size is 0.6-1.0mm, described spherical shaped transparent resin material mates with the interfacial charge character of soil particle, described model casing has water filling port, for injecting and holding the water body being rich in micro-nano bubble of simulated groundwater, and each of model casing uses different materials and color, improve the imaging definition of micro-nano bubble in porous medium pore water to greatest extent;
Laser instrument, described laser instrument is positioned at the top of described model casing, for providing the light source needed during observation, wherein, described laser instrument comprises laser lens, the light that described laser instrument sends is corrected to sheet by described laser lens, and the laser linewidth of described laser instrument is less than the depth of field of described camera;
Camera and camera lens, described camera and camera lens are positioned at the side of described model casing, and for observing micro-nano bubble in porous medium, described camera is the CCD camera of ISO, and the illumination of described camera imaging is more than or equal to 0.00002Lux; Described camera lens is industrial Zoom lens, can to the bubble imaging between 900 nanometers to 60 micron;
Picture collection and processing module, described picture collection and processing module are connected with described camera, carry out the acquisition and processing of picture, described picture collection and processing module adopt software, determine Adsorption law by observing bubble adsorption rate on the porous material, life period and whether there is adsorption/desorption phenomenon etc.; By analyzing the pixel size of bubble diagram picture and gray-scale value, determine the particle diameter of bubble in image; By multiple images taken continuously, the movement velocity of different bubble in computed image.
2. micro-nano air-bubble observation system in porous medium as claimed in claim 1, is characterized in that, also comprise:
Laser stent, described laser stent is used for laser instrument described in fixed support; And
Three-dimensional adjustable support, described three-dimensional adjustable support is used for camera and camera lens described in fixed support.
3. micro-nano air-bubble observation system in porous medium as claimed in claim 1, it is characterized in that, described model casing is rectangular parallelepiped, define is inspection surface close to described camera and camera lens, other faces are defined as background surfaces, left side wall, right side wall, bottom surface respectively, and wherein said inspection surface uses ultra-clear glasses, and other face uses organic glass, described background surfaces smears into black, and white is smeared in described left side wall, right side wall and bottom surface.
4. a micro-nano air-bubble observation method in porous medium, is characterized in that, adopts micro-nano air-bubble observation system in the porous medium as described in any one of claim 1-3, comprises the following steps:
S1. in described model casing, load spherical shaped transparent resin material, inject the water body being rich in micro-nano bubble;
S2. adopt described laser instrument to be the illumination of described water body, adopt described camera and camera lens to observe micro-nano bubble in described porous medium pore water; And
S3. picture collection and processing module control camera and camera lens gathers image and carries out analyzing and processing, obtain the characterization of adsorption of micro-nano bubble, domain size distribution and movement locus,
Wherein, the index matching of described spherical shaped transparent resin material and water, described spherical shaped transparent resin material mean grain size is 0.6-1.0mm, and described spherical shaped transparent resin material mates with the interfacial charge character of soil particle,
Wherein, described laser instrument comprises laser lens, and the light that described laser instrument sends is corrected to sheet by described laser lens, and the laser linewidth of described laser instrument is less than the depth of field of described camera.
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| CN105572020B (en) * | 2016-01-19 | 2018-05-22 | 西南交通大学 | A kind of nano-particle method of counting |
| CN107505240B (en) * | 2017-10-11 | 2019-10-29 | 华能澜沧江水电股份有限公司 | Under hypobaric in water body gas core NATURAL DISTRIBUTION observation device and method |
| CN108680477B (en) * | 2018-01-12 | 2024-04-12 | 浙江大学 | Piping test device and method based on laser test technology and transparent soil visualization |
| CN108984980B (en) * | 2018-09-03 | 2023-05-26 | 中建材玻璃新材料研究院集团有限公司 | Method for calculating rising rate of bubbles in glass clarification process |
| CN110260945B (en) * | 2019-07-09 | 2020-11-03 | 北京大学 | Total reflection type gas-liquid interface flow display method and gas-liquid interface position identification method |
| CN112345412A (en) * | 2020-10-23 | 2021-02-09 | 大连理工大学 | Nano bubble diffusion coefficient in-situ measurement method |
| CN113358527A (en) * | 2021-05-31 | 2021-09-07 | 北京石油化工学院 | System and method for measuring particle size of micro-bubbles in gas-liquid two-phase flow |
| CN113884275B (en) * | 2021-09-13 | 2022-08-23 | 浙江大学 | Device and method for observing vortex structure in porous medium transition flow |
| CN114324076B (en) * | 2022-03-10 | 2022-05-31 | 西南交通大学 | Grading rubble basic unit granule migration measuring device that permeates water |
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| CN102004070B (en) * | 2009-09-01 | 2013-08-14 | 杭州绿洁水务科技有限公司 | Detection system of particles in liquid |
| CN102109453A (en) * | 2009-12-29 | 2011-06-29 | 涂婉 | Micro-bubble property microscopic test and measurement integrated device |
| JP2011247748A (en) * | 2010-05-27 | 2011-12-08 | Nikuni Corp | Bubble observation method and device thereof |
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