AU2021101049A4 - Model device for pollutant dispersion in polluted soil - Google Patents
Model device for pollutant dispersion in polluted soil Download PDFInfo
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- AU2021101049A4 AU2021101049A4 AU2021101049A AU2021101049A AU2021101049A4 AU 2021101049 A4 AU2021101049 A4 AU 2021101049A4 AU 2021101049 A AU2021101049 A AU 2021101049A AU 2021101049 A AU2021101049 A AU 2021101049A AU 2021101049 A4 AU2021101049 A4 AU 2021101049A4
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- temperature
- box body
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- 239000002689 soil Substances 0.000 title claims abstract description 119
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 61
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 61
- 239000006185 dispersion Substances 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 142
- 238000012360 testing method Methods 0.000 claims abstract description 90
- 239000012267 brine Substances 0.000 claims description 57
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 54
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 24
- 239000006004 Quartz sand Substances 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 14
- 239000000523 sample Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 239000004576 sand Substances 0.000 claims description 9
- 239000008187 granular material Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 15
- 239000000243 solution Substances 0.000 description 12
- 238000002474 experimental method Methods 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000008014 freezing Effects 0.000 description 4
- 239000010865 sewage Substances 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000010257 thawing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000003900 soil pollution Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Immunology (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Dispersion Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention discloses a model device for pollutant dispersion in
polluted soil. Buffer layers are arranged at inner walls on two sides of a box body;
water inlets and water outlets are correspondingly connected to box walls on two
sides of the box body provided with the buffer layers one by one; one buffer layer
is connected with a water inlet pipe via corresponding water inlets; the other buffer
layer is connected with a water outlet pipe via corresponding water outlets; a valve
and a flowmeter are installed on the water inlet pipe; a plurality of water through
holes are uniformly formed in each buffer layer; a test cylinder is erected in the
box body, and a water flow space is respectively defined between the test cylinder
and the inner walls of the box body and between the test cylinder and the two
buffer layers; both ends of the test cylinder are opened; the test cylinder is filled
with polluted soil; meanwhile, a plurality of circulation holes are uniformly formed
in side walls of the test cylinder; and the two opened ends of the test cylinder are
blocked. The present invention discloses the model device for pollutant dispersion
in polluted soil, which can simulate an influence degree of external factors on
pollutant dispersion in the polluted soil, is simple and convenient, and saves labor.
Drawings of Description
22
221 222 223 224
141
101
24
2 1 13
110
23
FIG. 1
1
Description
Drawings of Description
22 221 222 223 224
101 24 2 1 13 141
110
23
FIG. 1
Description
Technical Field
The present invention relates to the technical field of models for simulating pollutant dispersion in polluted soil, and particularly relates to a model device for pollutant dispersion in polluted soil.
Background
With the development of science and technology, increasing convenience is brought to human life, but soil pollution is also brought. To well treat the soil pollution, influencing factors of pollutant dispersion in polluted soil shall be clearly known, so as to specifically treat the polluted soil. To master the influencing factors of pollutant dispersion in the polluted soil and master the influence degrees of the influencing factors on the pollutant dispersion in the polluted soil, in case of field observation, each testing device is difficult to be installed, and lots of labor shall be consumed. Therefore, how to provide a model device for pollutant dispersion in polluted soil is a problem that urgently needs to be solved by those skilled in the art.
Summary
In view of this, the present invention provides a model device for pollutant dispersion in polluted soil, which can simulate an influence degree of external factors on pollutant dispersion in the polluted soil, is simple and convenient, and saveslabor. To achieve the above purpose, the present invention adopts the following technical solutions: The model device for pollutant dispersion in polluted soil includes:
Description
a box body, wherein buffer layers are arranged at inner walls on two sides of the box body; water inlets and water outlets are correspondingly connected to box walls on two sides of the box body provided with the buffer layers one by one; one buffer layer is connected with a water inlet pipe via corresponding water inlets; the other buffer layer is connected with a water outlet pipe via corresponding water outlets; valves and flowmeters are installed on the water inlet pipe and the water outlet pipe; and a plurality of water through holes are uniformly formed in each buffer layer; a test cylinder, wherein the test cylinder is erected in the box body; a water flow space is respectively defined between the test cylinder and the inner walls of the box body and between the test cylinder and the two buffer layers; both ends of the test cylinder are opened; the test cylinder is filled with polluted soil; meanwhile, a plurality of circulation holes are uniformly formed in side walls of the test cylinder; and the two opened ends of the test cylinder are blocked. In the present invention, the polluted soil is filled in the test cylinder. Since the plurality of circulation holes are formed in the side walls of the test cylinder, the polluted soil in the test cylinder can disperse out via the plurality of circulation holes. Therefore, when the valves are opened and the water flow is recorded by the flowmeters, external water is transported to the corresponding buffer layer by the water inlet pipe and then enters the water flow space via the plurality of water through holes on the buffer layer; meanwhile, the water in the water flow space can enter the buffer layer close to the water outlet pipe via the plurality of water through holes close to the water outlet pipe and then flows out of the water outlet pipe, thereby enabling the water to uniformly enter the polluted soil in the test cylinder. Therefore, the polluted soil in the test cylinder may disperse out along with the water flow via the circulation holes, then the polluted soil through which the water flow passes is taken out in layers or zones, and concentrations of pollutants in the polluted soil through which the water flow passes in each layer or each zone are tested by special instruments. Thus, the concentration of the pollutants in the corresponding polluted soil can be known at certain water flow
Description
velocity (when the water flow is recorded by the flowmeter, the flow velocity of the water can be calculated), i.e., the present invention can simulate the pollutant dispersion effect in the polluted soil at certain flow velocity of the water. The present invention is simple in structure and convenient to operate, and saves labor. Preferably, a plurality of temperature probes and a plurality of moisture sensors are embedded into the polluted soil; the plurality of temperature probes and the plurality of moisture sensors are embedded into the polluted soil at intervals along a central axis of the test cylinder; and the plurality of temperature probes and the plurality of moisture sensors are electrically connected with a controller and a display screen in sequence. The plurality of temperature probes in the present invention are embedded into the polluted soil at intervals along the central axis of the test cylinder and can be displayed by the display screen, so that changing conditions of a temperature field inside the polluted soil in a freezing-thawing environment can be simulated. Moreover, the plurality of moisture sensors in the present invention are embedded into the polluted soil at intervals along the central axis of the test cylinder and can be displayed by the display screen, so that water migration conditions inside the polluted soil in the freezing-thawing environment can be simulated. Thus, more accurate test conditions can be provided for simulating the pollutant dispersion in the polluted soil through the plurality of temperature probes and the plurality of moisture sensors in the present invention. Preferably, the two buffer layers are correspondingly arranged on two opposite side walls of the box body one by one. In the present invention, the two buffer layers are opposite to each other, so that the water flow may linearly circulate so as to increase the velocity of taking the polluted soil away by the water flow, thereby increasing working efficiency of the present invention. Moreover, the present invention can conform to characteristics of the water flow, thereby increasing the truth of simulation conditions in the present invention. Preferably, the box body is cuboid; and each buffer layer includes:
Description
a partition plate, wherein the partition plate is close to and parallel to one side wall of the box body and is erected in the box body; meanwhile, two sides of the partition plate are correspondingly connected to the two side walls of the box body perpendicular to the partition plate one by one so as to define a containing cavity; and moreover, the plurality of water through holes are uniformly formed in the partition plate. In the present invention, the containing cavity is formed between the partition plate and the side walls of the box body, and the plurality of water through holes are uniformly formed in the partition plate, so that water which is inputted into the water inlet pipe in a centralized manner can be dispersed in the containing cavity and enter the water flow space via the plurality of water through holes. In a similar way, the water in the water flow space is dispersed via the plurality of water through holes to enter the containing cavity close to the water outlet pipe and then is discharged via a water duct in a centralized manner. Therefore, the water can uniformly flow through all the polluted soil in the test cylinder; and the water is prevented from flowing through a certain local part of the polluted soil in the test cylinder in a centralized manner only, thereby increasing the truth of simulation conditions of pollutant dispersion in the polluted soil in the present invention. Preferably, the buffer layers further include: granule sand, wherein the granule sand is filled in the containing cavity. In the present invention, the granule sand is filled in the containing cavity, so that an effect of dispersing and buffering the water in the present invention can be further improved. Preferably, the granule sand is medium-coarse sand, thereby avoiding blocking water circulation. Preferably, a filter layer is fixed on one side face of the partition plate close to the test cylinder. In the present invention, by virtue of the filter layer, the water circulation is not affected (because a plurality of water through holes are formed in the filter layer); and the polluted soil dispersed from the test cylinder can be prevented from
Description
entering the containing cavity along with the water via the water through holes so as not to be discharged out of the box body via the water outlet pipe. Therefore, secondary pollution to the external environment caused by pollutants dispersed from the polluted soil can be avoided. Preferably, one opened end of the test cylinder is blocked by a cooling device; and the cooling device includes: a low-temperature plate, wherein the low-temperature plate covers one opened end of the test cylinder; a first cavity is formed inside the low-temperature plate; meanwhile, an inlet and an outlet connected with the first cavity are respectively formed in one side face of the low-temperature plate away from the test cylinder; the inlet is connected with a brine input pipe; and the outlet is connected with a brine output pipe; a brine tank, wherein the brine tank is filled with brine; the brine is at a temperature of minus 25-35°C; both the brine input pipe and the brine output pipe are connected into the brine tank; and control valves are installed on the brine input pipe and the brine output pipe. In the present invention, when the cooling device is started, a continuous cold end temperature can be provided for the polluted soil by the cooling device, so that the present invention can achieve effects of simulating dispersion rules of pollutants in the polluted soil at frozen soil and freezing temperatures, matching the polluted soil with the water flow and mastering the influence of the polluted soil on the pollutant dispersion under combined actions of the low temperature and the water flow. Specifically, in the present invention, the low-temperature plate is installed on the top of the test cylinder and externally connected with the brine input pipe and the brine output pipe; and both the brine input pipe and the brine output pipe are connected to the brine tank. Thus, a circulation loop is formed among the first cavity formed in the low-temperature plate, the brine input pipe, the brine output pipe and the brine tank. The brine tank contains low-temperature brine. In this way, a refrigerating cycle system may be formed on the top of the polluted soil; and the
Description
continuous cold end temperature may be provided by the low-temperature plate, thereby achieving the effect of simulating the dispersion rules of the pollutants in the polluted soil at the frozen soil and freezing temperature. Moreover, the brine is a commonly used refrigerant, is low in price and excellent in controllability and can achieve an expected cooling effect. Preferably, the other opened end of the test cylinder is blocked by a heating device; and the heating device includes: a high-temperature plate, wherein the high-temperature plate and the low-temperature plate cover the other opened end of the test cylinder opposite to each other; a second cavity is formed in the high-temperature plate; and a threading hole connected with the second cavity is formed in a side wall of the high-temperature plate; an electric heater, wherein the electric heater is embedded into the second cavity and connected with a wire; and the wire penetrates through the threading hole and is connected to a power supply. In the present invention, when the heating device is started, a continuous heat source temperature can be provided for the polluted soil by the heating device, so that dispersion conditions of the pollutants in the polluted soil at a high temperature can be simulated separately in the present invention. The heating device may be matched with the cooling device to form the dispersion conditions of the pollutants in the polluted soil under alternate cold and hot cycle conditions. The heating device may also be matched with the water flow to master the influence of the polluted soil on the pollutant dispersion under the combined actions of the high temperature and the water flow. Certainly, the heating device may be matched with the cooling device and the water flow simultaneously, to analyze a dispersion effect of the pollutants in the polluted soil under the joint conditions of the alternate cold and hot cycles and the water flow. Specifically, the high-temperature plate is installed at the bottom of the test cylinder, and the electric heater is installed in the high-temperature plate, so that the electric heater may achieve a heating effect when electrified. Thus, a fixed heat
Description
source temperature may be formed, so that the dispersion conditions of the pollutants in the polluted soil at the high temperature can be simulated in the present invention. Preferably, two quartz sand layers are respectively loaded in the test cylinder; one quartz sand layer is positioned between the polluted soil and the low-temperature plate; the other quartz sand layer is positioned between the polluted soil and the high-temperature plate; temperature sensors are embedded into the two quartz sand layers; and the two temperature sensors are electrically connected with the controller and the display screen in sequence. In the present invention, the quartz sand layers are arranged between the polluted soil and the low-temperature plate and between the polluted soil and the high-temperature plate, so that heat transfer efficiency of the low-temperature plate on the polluted soil may be increased by the quartz sand layers, and heat transfer efficiency of the high-temperature plate on the polluted soil may be increased by the quartz sand layers. Meanwhile, the temperature sensors are embedded into the two quartz sand layers, and numerical values in the two temperature sensors are controlled to be displayed on the display screen by the controller, so that an influencing temperature of the polluted soil can be reasonably controlled; and truth of the simulation conditions and accuracy of the simulation result are increased in the present invention. Through the above technical solutions, compared with the prior art, the present invention discloses the model device for pollutant dispersion in the polluted soil, which may achieve technical effects as follows: In the present invention, the polluted soil is put into the test cylinder. Since the plurality of circulation holes are formed in the side walls of the test cylinder, the polluted soil in the test cylinder can disperse out via the plurality of circulation holes. Therefore, when the valves are opened and the water flow is recorded by the flowmeters, external water is transported to the corresponding buffer layer by the water inlet pipe and then enters the water flow space via the plurality of water through holes on the buffer layer; meanwhile, the water in the water flow space can
Description
enter the buffer layer close to the water outlet pipe via the plurality of water through holes close to the water outlet pipe and then flows out of the water outlet pipe, thereby enabling the water to uniformly enter the polluted soil in the test cylinder. Therefore, the polluted soil in the test cylinder may disperse out along with the water flow via the circulation holes, then the polluted soil through which the water flow passes is taken out in layers or zones, and concentrations of pollutants in the polluted soil through which the water flow passes in each layer or each zone are tested by special instruments. Thus, the concentration of the pollutants in the corresponding polluted soil can be known at certain water flow velocity (when the water flow is recorded by the flowmeter, the water flow velocity can be calculated), i.e., the present invention can simulate the pollutant dispersion effect in the polluted soil at certain water flow velocity. The present invention is simple in structure and convenient to operate, and saveslabor.
Description of Drawings
To more clearly describe the technical solution in the embodiments of the present invention or in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be simply presented below. Apparently, the drawings in the following description are merely the embodiments of the present invention, and for those ordinary skilled in the art, other drawings can also be obtained according to the provided drawings without contributing creative labor. Fig. 1 is a structural diagram of a model device for pollutant dispersion in polluted soil in the present invention; and Fig. 2 is a structural diagram of a test cylinder in a model device for pollutant dispersion in polluted soil in the present invention. In figures, 1-box body; 11-buffer layer; 12-water inlet pipe; 13-water outlet pipe; 14-valve; 15-flowmeter; 110-water through hole; 2-test cylinder; 210-water
Description
flow space; 21-polluted soil; 22-cooling device; 23-heating device; 20-circulation hole; 111-partition plate; 101-containing cavity; 221-low-temperature plate; 222-brine input pipe; 223-brine output pipe; 224-brine tank; 231-high-temperature plate; 232-electric heater; 24-quartz sand layer; 241-temperature sensor.
Detailed Description
The technical solution in embodiments of the present invention will be clearly and fully described below in combination with the drawings in the embodiments of present invention. Apparently, the described embodiments are merely part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those ordinary skilled in the art without contributing creative labor will belong to the protection scope of the present invention. Embodiments of the present invention disclose a model device for pollutant dispersion in polluted soil, including: a box body 1, wherein buffer layers 11 are arranged at inner walls on two sides of the box body 1; water inlets and water outlets are correspondingly connected to box walls on two sides of the box body 1 provided with the buffer layers 11 one by one; one buffer layer 11 is connected with a water inlet pipe 12 via corresponding water inlets; the other buffer layer 11 is connected with a water outlet pipe 13 via corresponding water outlets; valves 14 and flowmeters 15 are installed on the water inlet pipe 12 and the water outlet pipe 13; and a plurality of water through holes 110 are uniformly formed in each buffer layer 11; a test cylinder 2, wherein the test cylinder 2 is erected in the box body 1; a water flow space 210 is respectively defined between the test cylinder and the inner walls of the box body 1 and between the test cylinder and the two buffer layers 11; both ends of the test cylinder 2 are opened; the test cylinder 2 is filled with polluted soil 21; meanwhile, a plurality of circulation holes 20 are uniformly
Description
formed in side walls of the test cylinder 2; and the two opened ends of the test cylinder 2 are blocked. To further optimize the above technical solution, a plurality of temperature probes and a plurality of moisture sensors are embedded into the polluted soil 21; the plurality of temperature probes and the plurality of moisture sensors are embedded into the polluted soil 21 at intervals along a central axis of the test cylinder 2; and the plurality of temperature probes and the plurality of moisture sensors are electrically connected with a controller and a display screen in sequence. To further optimize the above technical solution, the two buffer layers 11 are correspondingly arranged on two opposite side walls of the box body 1 one by one. To further optimize the above technical solution, the box body 1 is cuboid; and each buffer layer 11 includes: a partition plate 111, wherein the partition plate 111 is close to and parallel to one side wall of the box body 1 and is erected in the box body 1; meanwhile, two sides of the partition plate 111 are correspondingly connected to the two side walls of the box body 1 perpendicular to the partition plate 111 one by one so as to define a containing cavity 101); and moreover, the plurality of water through holes 110 are uniformly formed in the partition plate 111. To further optimize the above technical solution, the buffer layers 11 further include: granule sand, wherein the granule sand is filled in the containing cavity 101. To further optimize the above technical solution, a filter layer is fixed on one side face of the partition plate 111 close to the test cylinder 2. To further optimize the above technical solution, one opened end of the test cylinder 2 is blocked by a cooling device 22; and the cooling device 22 includes: a low-temperature plate 221, wherein the low-temperature plate 221 covers one opened end of the test cylinder 2; a first cavity is formed inside the low-temperature plate 221; meanwhile, an inlet and an outlet connected with the first cavity are respectively formed in one side face of the low-temperature plate
Description
221 away from the test cylinder 2; the inlet is connected with a brine input pipe 222; and the outlet is connected with a brine output pipe 223; a brine tank 224, wherein the brine tank 224 is filled with brine; the brine is at a temperature of minus 25-35°C; both the brine input pipe 222 and the brine output pipe 223 are connected into the brine tank 224; and control valves are installed on the brine input pipe 222 and the brine output pipe 223. To further optimize the above technical solution, the other opened end of the test cylinder 2 is blocked by a heating device 23; and the heating device 23 includes: a high-temperature plate 231, wherein the high-temperature plate 231 and the low-temperature plate 221 cover the other opened end of the test cylinder 2 opposite to each other; a second cavity is formed in the high-temperature plate 231; and a threading hole connected with the second cavity is formed in a side wall of the high-temperature plate 231; an electric heater 232, wherein the electric heater 232 is embedded into the second cavity and connected with a wire; and the wire penetrates through the threading hole and is connected to a power supply. To further optimize the above technical solution, two quartz sand layers 24 are respectively loaded in the test cylinder 2; one quartz sand layer 24 is positioned between the polluted soil 21 and the low-temperature plate 221; the other quartz sand layer 24 is positioned between the polluted soil 21 and the high-temperature plate 231; temperature sensors 241 are embedded into the two quartz sand layers 24; and the two temperature sensors 241 are electrically connected with the controller and the display screen in sequence. Embodiment 1 The embodiment of the present invention discloses a model device for pollutant dispersion in polluted soil, to simulate an effect of a pollutant dispersion rate at certain flow velocity. The operating principle is as follows:
Description
The valve 14 is opened, and water flow is recorded by a flowmeter 15 (water flow velocity can be calculated), so that external water is transported to the containing cavity 101 formed between the corresponding partition plate 111 and side walls of the box body 1 via the water inlet pipe 12 for dispersing. The dispersed water flow enters the water flow space 210 via a plurality of water through holes 110 formed in the partition plate 111, and thus the water in the water flow space 210 enters a test cylinder 2 via a plurality of circulation holes 20 formed in side walls of the test cylinder 2 and flows through polluted soil 21 in the test cylinder 2, so that the polluted soil 21 in the test cylinder 2 enters the water flow space 210 along with the water flow via the plurality of circulation holes 20. Then, formed sewage enters the containing cavity 101 close to a water outlet pipe 13 via the water through holes 110 close to the water outlet pipe 13 and then is discharged into a sewage collection tank (the water outlet pipe 13 is connected with the sewage collection tank) by the water outlet pipe 13 (to enable the water to enter from the water inlet pipe 12 and flow out of the water outlet pipe 13, one end of the box body 1 close to the water inlet pipe 12 may be higher than one end close to the water outlet pipe 13), thereby avoiding secondary pollution to the external environment caused by the pollutants in the sewage (to well avoid leakage of the polluted soil, the filter layer may be fixed on one side face of the partition plate 111 close to the test cylinder 2, so that pollution impurities are reserved in the box body 1). After the experiment is ended, the test cylinder 2 is taken out; various structures are removed; the polluted soil may be taken in layers and zones and numbered in sequence; concentrations of various pollutants in numbered soil are monitored by special instruments; and predetermined flow velocity can be realized by controlling the flow rate of the water. The water flows through the polluted soil 21 at a constant speed via the plurality of circulation holes 20 in the side walls of the test cylinder 2, so that an effect of simulating a pollutant dispersion rate at
Description
certain flow velocity can be achieved. Through data arrangement (i.e., different water flow velocities in multiple experiments serve as data of an axis x, and the concentrations of the pollutants in multiple parts of polluted soil corresponding to multiple water flow velocities one by one serve as data of an axis y), dispersion conditions of the pollutants in the entire polluted soil along with the water flow can be obtained. Embodiment 2: Effect of simulating pollutant dispersion rules in soil mass at frozen soil and freezing temperatures. The operating principle is as follows: In the present invention, the low-temperature plate 221 is installed on the top of the test cylinder and externally connected with the brine input pipe 222 and the brine output pipe 223; and both the brine input pipe 222 and the brine output pipe 223 are connected to the brine tank 224. Then, a control valve is opened; a circulation loop is formed among the first cavity formed in the low-temperature plate 221, the brine input pipe 222, the brine output pipe 223 and the brine tank 224. The brine tank 224 contains low-temperature brine. In this way, a refrigerating cycle system may be formed on the top of the polluted soil 21; and a continuous cold end temperature may be provided by the low-temperature plate 221. After the experiment is ended, the test cylinder 2 is taken out; various structures are removed; the polluted soil may be taken in layers and zones and numbered in sequence; concentrations of various pollutants in numbered soil are monitored by special instruments; the continuous cold end temperature is provided in combination with the low-temperature plate 221; and by virtue of data arrangement, the pollutant dispersion rules in the polluted soil at the frozen soil and freezing temperatures can be simulated. Embodiment 3: Embodiment 3 is a combination of embodiment 2 and embodiment 1, to master an influence effect of the polluted soil 21 on the pollutant dispersion under combined actions of the low temperature and water flow.
Description
Embodiment 4: Pollutant dispersion conditions in the soil mass at a high temperature are simulated. The operating principle is as follows: the high-temperature plate 231 is installed at the bottom of the test cylinder 2, and the electric heater 232 is installed in the high-temperature plate 231, so that the electric heater 232 may achieve a heating effect when electrified. Thus, a fixed heat source temperature may be formed. After the experiment is ended, the test cylinder 2 is taken out; various structures are removed; the polluted soil may be taken in layers and zones and numbered in sequence; concentrations of various pollutants in numbered soil are monitored by special instruments; the continuous heat source temperature is provided in combination with the high-temperature plate 231; and by virtue of data arrangement, the pollutant dispersion conditions in the polluted soil at the high temperature can be simulated. Embodiment 5: Embodiment 5 is a combination of embodiment 4 and embodiment 2, to form pollutant dispersion conditions in the polluted soil under alternate cold and hot cycle conditions. Embodiment 6: Embodiment 6 is a combination of embodiment 5 and embodiment 3, to master the pollutant dispersion effect in the polluted soil under joint conditions of alternate cold and hot cycles and water flow. Embodiment 7: On the basis of embodiments 1-6, the plurality of temperature probes in the present invention are embedded into the polluted soil at intervals along a central axis of the test cylinder 2 and can be displayed by the display screen, so that changing conditions of a temperature field inside the polluted soil in a freezing-thawing environment can be simulated. Moreover, a plurality of moisture sensors in the present invention are embedded into the polluted soil at intervals along the central axis of the test cylinder 2 and can be displayed by the display screen, so that water migration conditions inside the polluted soil in the
Description
freezing-thawing environment can be simulated. Therefore, more accurate test conditions can be provided for simulating the pollutant dispersion in the polluted soil through the plurality of temperature probes and the plurality of moisture sensors in the present invention. Each embodiment in the description is described in a progressive way. The difference of each embodiment from each other is the focus of explanation. The same and similar parts among all of the embodiments can be referred to each other. For the device disclosed by the embodiments, because the device corresponds to a method disclosed by the embodiments, the device is simply described. Refer to the description of the method part for the related part. The above description of the disclosed embodiments enables those skilled in the art to realize or use the present invention. Many modifications to these embodiments will be apparent to those skilled in the art. The general principle defined herein can be realized in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principle and novel features disclosed herein.
Claims (9)
1. A model device for pollutant dispersion in polluted soil, comprising: a box body (1), wherein buffer layers (11) are arranged at inner walls on two sides of the box body (1); water inlets and water outlets are correspondingly connected to box walls on two sides of the box body (1) provided with the buffer layers (11) one by one; one buffer layer (11) is connected with a water inlet pipe (12) via corresponding water inlets; the other buffer layer (11) is connected with a water outlet pipe (13) via corresponding water outlets; valves (14) and flowmeters (15) are installed on the water inlet pipe (12) and the water outlet pipe (13); and a plurality of water through holes (110) are uniformly formed in each buffer layer (11); a test cylinder (2), wherein the test cylinder (2) is erected in the box body (1); a water flow space (210) is respectively defined between the test cylinder and the inner walls of the box body (1) and between the test cylinder and the two buffer layers (11); both ends of the test cylinder (2) are opened; the test cylinder (2) is filled with polluted soil (21); meanwhile, a plurality of circulation holes (20) are uniformly formed in side walls of the test cylinder (2); and the two opened ends of the test cylinder (2) are blocked.
2. The model device for pollutant dispersion in polluted soil according to claim 1, wherein a plurality of temperature probes and a plurality of moisture sensors are embedded into the polluted soil (21); the plurality of temperature probes and the plurality of moisture sensors are embedded into the polluted soil (21) at intervals along a central axis of the test cylinder (2); and the plurality of temperature probes and the plurality of moisture sensors are electrically connected with a controller and a display screen in sequence.
3. The model device for pollutant dispersion in polluted soil according to claim 2, wherein the two buffer layers (11) are correspondingly arranged on two opposite side walls of the box body (1) one by one.
4. The model device for pollutant dispersion in polluted soil according to claim 3, wherein the box body (1) is cuboid; and each buffer layer (11) comprises:
Claims
a partition plate (111), wherein the partition plate (111) is close to and parallel to one side wall of the box body (1) and is erected in the box body (1); meanwhile, two sides of the partition plate (111) are correspondingly connected to the two side walls of the box body (1) perpendicular to the partition plate (111) one by one so as to define a containing cavity (101); and moreover, the plurality of water through holes (110) are uniformly formed in the partition plate (111).
5. The model device for pollutant dispersion in polluted soil according to claim 4, wherein the buffer layers (11) further comprise: granule sand, wherein the granule sand is filled in the containing cavity (101).
6. The model device for pollutant dispersion in polluted soil according to claim 4, wherein a filter layer is fixed on one side face of the partition plate (111) close to the test cylinder (2).
7. The model device for pollutant dispersion in polluted soil according to claim 6, wherein one opened end of the test cylinder (2) is blocked by a cooling device (22); and the cooling device (22) comprises: a low-temperature plate (221), wherein the low-temperature plate (221) covers one opened end of the test cylinder (2); a first cavity is formed inside the low-temperature plate (221); meanwhile, an inlet and an outlet connected with the first cavity are respectively formed in one side face of the low-temperature plate (221) away from the test cylinder (2); the inlet is connected with a brine input pipe (222); and the outlet is connected with a brine output pipe (223); a brine tank (224), wherein the brine tank (224) is filled with brine; the brine is at a temperature of minus 25-35°C; both the brine input pipe (222) and the brine output pipe (223) are connected into the brine tank (224); and control valves are installed on the brine input pipe (222) and the brine output pipe (223).
8. The model device for pollutant dispersion in polluted soil according to claim 7, wherein the other opened end of the test cylinder (2) is blocked by a heating device (23); and the heating device (23) comprises: a high-temperature plate (231), wherein the high-temperature plate (231) and the low-temperature plate (221) cover the other opened end of the test cylinder (2)
Claims
opposite to each other; a second cavity is formed in the high-temperature plate (231); and a threading hole connected with the second cavity is formed in a side wall of the high-temperature plate (231); an electric heater (232), wherein the electric heater (232) is embedded into the second cavity and connected with a wire; and the wire penetrates through the threading hole and is connected to a power supply.
9. The model device for pollutant dispersion in polluted soil according to any one of claims 2-8, wherein two quartz sand layers (24) are respectively loaded in the test cylinder (2); one quartz sand layer (24) is positioned between the polluted soil (21) and the low-temperature plate (221); the other quartz sand layer (24) is positioned between the polluted soil (21) and the high-temperature plate (231); temperature sensors (241) are embedded into the two quartz sand layers (24); and the two temperature sensors (241) are electrically connected with the controller and the display screen in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021101049A AU2021101049A4 (en) | 2021-02-26 | 2021-02-26 | Model device for pollutant dispersion in polluted soil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021101049A AU2021101049A4 (en) | 2021-02-26 | 2021-02-26 | Model device for pollutant dispersion in polluted soil |
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| Publication Number | Publication Date |
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| AU2021101049A4 true AU2021101049A4 (en) | 2021-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| AU2021101049A Ceased AU2021101049A4 (en) | 2021-02-26 | 2021-02-26 | Model device for pollutant dispersion in polluted soil |
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| AU (1) | AU2021101049A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114755393A (en) * | 2022-04-29 | 2022-07-15 | 内蒙古师范大学 | Simulation device for migration and diffusion of micro plastic in soil |
-
2021
- 2021-02-26 AU AU2021101049A patent/AU2021101049A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114755393A (en) * | 2022-04-29 | 2022-07-15 | 内蒙古师范大学 | Simulation device for migration and diffusion of micro plastic in soil |
| CN114755393B (en) * | 2022-04-29 | 2023-08-04 | 内蒙古师范大学 | Micro-plastic migration and diffusion simulation device in soil |
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