CN109297871A - A kind of device and its analogy method for simulating pesticide Transport And Transformation process in paddy water and soil system - Google Patents
A kind of device and its analogy method for simulating pesticide Transport And Transformation process in paddy water and soil system Download PDFInfo
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- CN109297871A CN109297871A CN201811427593.4A CN201811427593A CN109297871A CN 109297871 A CN109297871 A CN 109297871A CN 201811427593 A CN201811427593 A CN 201811427593A CN 109297871 A CN109297871 A CN 109297871A
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Abstract
The present invention provides a kind of devices of pesticide Transport And Transformation process in simulation paddy water and soil system, including water tank, pesticide migration experiment column, soil gap water collection system, filtrate collection system, Multi-layer supporting platform；Water tank and pesticide migration experiment column are placed in support platform, and pesticide migration experiment column is connected by hose connection device with water tank, is connected through a screw thread device and is connected with the cylindrical filter arrangement of filtrate collection system；The soil gap water collection system is made of soil gap hydromining collector and soil gap water collector, and soil gap hydromining collector side wall is equipped with Interstitial Water water inlet；The filtrate collection system further includes filtrate collection.The invention also discloses the analogy methods of above-mentioned apparatus.Transport And Transformation behavior of the present apparatus analog pesticide in paddy water and soil system " pour water → falling dry →... ... → pour water → fall and is dry " Hydrodynamic Process, experimental result is more accurate, is conducive to the accurate collection of pesticide in filtrate.
Description
Technical field
The present invention relates to a kind of experimental simulation devices of pesticide Transport And Transformation, belong to field of environment protection, and in particular to one
The device and its analogy method of pesticide Transport And Transformation process in kind simulation paddy water and soil system.
Background technique
China is a large agricultural country, and rice is the maximum cereal crops of China's cultivated area, and sown area accounts for about entirely
The 26.9% of state's foodstuff planting area.During paddy growth is cultivated, applying pesticides prevention and treatment disease pest and weed is to ensure that rice is steady
It produces, the important means of high yield and excellent production.But since most of pesticide has potential persistence, toxicity and biology tired
Product property, therefore pesticide also increasingly sharpens to the harm of environment and biology while bringing economic benefit to us.
After the applications of pesticide, pesticide molecule can run through settlement action and enter irrigation water layer, and then pass through diffusion, sedimentation
And suction-operated is stored in topsoil, the pesticide in subsequent topsoil can be moved with gap water sport to deep percolation
It moves, and then body of groundwater is polluted, potential threat is caused to ecological environment and human health.Therefore, paddy water and soil is studied
The Transport And Transformation behavior of pesticide can provide strong scientific basis for control soil pollution and controlling ecological environment in system.
Currently, the experimental provision of simulation pesticide Transport And Transformation behavior in paddy water and soil system is still very rare.It is existing
Device majority is more simple, and the Transport And Transformation simulation of pesticide is also inaccurate.Such as: being difficult in accurate simulation paddy water and soil system
The Hydrodynamic Process of " pour water → falling dry →... ... → pour water → fall and is dry "；Existing device is generally provided only with a pollutant and moves
Experiment column is moved, obtained experimental result is not accurate enough；Existing apparatus during the experiment, cannot accurately be layered soil sampling and gap
Water sample, experimental result are influenced by wall effect, and error is larger；Pesticide collects the disadvantages of not accurate enough in filtrate.
Summary of the invention
The object of the invention is that overcoming drawbacks described above, develop a kind of for simulating pesticide migration in paddy water and soil system
The device and its analogy method of conversion process, present apparatus analog pesticide paddy water and soil system " dry →... ... of pouring water → fall →
Pour water → fall and is dry " Transport And Transformation behavior in Hydrodynamic Process, the present apparatus is provided with three pesticides migration experiment columns as experiment
Group can be used as parallel laboratory test control group, and the experimental result made is more accurate, for hydrophilic/hydrophobic pesticide, cylindricality
It is separately filled with polypropylene filler/inertia high aluminium ball in filter device, is conducive to the accurate collection of pesticide in filtrate.
To achieve the above object, in a kind of simulation paddy water and soil system of the invention pesticide Transport And Transformation process device,
It, which is mainly characterized by, collects system including water tank, pesticide migration experiment column, soil gap water collection system, filtrate
System, hose connection device, screw connection, support platform, the water tank and pesticide migration experiment column are placed in support
On platform, pesticide migration experiment column is connected by rubber hose with water tank, is connected through a screw thread device and cylindrical filter fills
Set connection, water tank leading flank bottom sets that there are three flowing water Valves side by side；Water and soil on the right side of the pesticide migration experiment column
Inlet valve is equipped at interface, right side is vertical to be evenly distributed with multiple pillar sample taps, the soil gap water collection system
Including multiple soil gap hydromining collectors and soil gap water collector, soil gap water collector is placed on soil gap hydromining
Below collector, the multiple soil gap hydromining collector is inserted to be migrated in experiment column in soil in pesticide, and bottom is moved across pesticide
Experiment column and cylindrical filter arrangement are moved, top sealing, bottom is equipped with tip water outlet, between side wall offers at different height
Gap water water inlet, and wrapped up with gauze, the filtrate collection system includes cylindrical filter arrangement and filtrate collection, filtrate
Collector is connected with liquid valve door set by cylindrical filter arrangement bottom right side, is placed on the downside of support platform bottom.
Preferably, the water tank is placed in support platform top layer, scale, water tank leading flank bottom are indicated on water tank
Portion is set there are three flowing water Valve, and three flowing water Valves pass through three pesticides arranged side by side on rubber hose and support platform bottom respectively
Migration experiment column is connected.
Preferably, the pesticide migration experiment column is placed in support platform bottom, it is set side by side on support platform bottom
Three identical pesticide migration experiment columns, pesticide migration test and indicate scale on column, and vertical every 5 cm of spacing in right side is uniformly distributed
There is pillar sample tap, pillar sample tap is used for soil sampling, and pesticide migration experiment column is opening design up and down, is consolidated at outlet at bottom
Surely there is a circular screen orifice plate, the radius of the circular screen orifice plate is 25cm, with a thickness of 1cm, pesticide migration experiment column right side water
Set inlet valve is connected by rubber hose with water tank at native interface, and bottom is connected through a screw thread device and cylindricality mistake
Filter device is fixedly connected, and contaminant transportation tests column wall and is equipped with helicitic texture, can effectively prevent short flow phenomenon.
Preferably, the soil gap water collection system includes that soil gap hydromining collector and soil gap water are collected
Device, multiple soil gap hydromining collectors are inserted to be migrated in experiment column in soil in pesticide, bottom pass through pesticide migration experiment column and
Cylindrical filter arrangement, top sealing, bottom is equipped with tip water outlet, between side wall offers at different height according to the actual situation
Gap water water inlet, and being wrapped up with gauze prevents soil entrance from Interstitial Water water inlet being caused to block, soil gap water collector
It is placed in immediately below soil gap hydromining collector, is equipped with multiple collection holes inside soil gap water collector, locating for internal gathering hole
Position and soil gap hydromining collector position correspond.
Preferably, the filtrate collection system includes cylindrical filter arrangement and filtrate collection, cylindrical filter arrangement bottom
Portion is furnished with multiple apertures, and hole diameter is more bigger than soil gap hydromining header diameter so that Interstitial Water collection tube passes through, for parent
The voidage of aqueous stain, filled polypropylene filler in cylindrical filter arrangement, filling is 1:8, for hydrophobic contaminant, column
Inertia high aluminium ball is filled in shape filter device, the voidage of filling is 1:9, and cylindrical filter arrangement bottom right side offers liquid valve
Door is connected with filtrate collection, and the volume of each filtrate collection is 500 mL.
A method of pesticide Transport And Transformation process in simulation paddy water and soil system, it is characterised in that: use above-mentioned one
The device of pesticide Transport And Transformation process in kind simulation paddy water and soil system, comprising the following steps:
The first step is filled the water into water tank: water body injection needed for experiment is placed in the water tank of support platform top layer；
Second step is inserted into soil gap hydromining collector: soil gap hydromining collector is passed through set by cylindrical filter arrangement bottom
Aperture, being lined with rubber pad around aperture prevents the leak of cylindrical filter arrangement bottom；
Third step fills filler into cylindrical filter arrangement: being directed to hydrophily pollutant, poly- third is filled into cylindrical filter arrangement
Alkene filler, the voidage of filling are 1:8；For hydrophobic contaminant, it is filled with inertia high aluminium ball into cylindrical filter arrangement, fills out
The voidage filled is 1:9；
4th step, the soil sample that homogenizes needed for being packed into experiment: after the soil sample for being used to test is homogenized, uniform paving filling pesticide
In migration experiment column；
5th step simulates paddy water and soil system: the water-in and water-out valve at rubber hose both ends is opened, from water tank to pesticide
Water layer is irrigated in injection in migration experiment column；Water layer is irrigated every time to fall dry and then poured water next time naturally, and so on,
To simulate paddy water and soil system Hydrodynamic Process；
6th step, the sampling and test of soil sample, gap water sample: during simulating paddy water and soil system, soil sample can be from pesticide
The vertical pillar sample tap of migration experiment column, which is layered, to be taken out, and gap water sample can be from soil gap hydromining collection bottom of the tube soil gap
Water collector is collected；All sampling operations can carry out in different time nodes, then detect and analyze pesticide in soil sample and
Concentration and content in the water sample of gap；
The sampling and test of deep percolation liquid: 7th step is flowed out with filtrate collection collection from cylindrical filter arrangement liquid outlet
Deep percolation liquid then detects and analyzes pesticide concentration and concentration in deep percolation liquid.
Advantages of the present invention and effect:
First, the present invention " a kind of device for simulating pesticide Transport And Transformation process in paddy water and soil system " realizes paddy water and soil system
The simulation of feature hydrodynamic force situation in system；Three pesticide migration experiment columns are set as experimental group, this keeps experimental result more quasi-
Really；Pesticide migration experiment column can be layered soil sampling；
Second, according to the actual situation, more soil gap hydromining collectors are set, and different soils Interstitial Water collection tube side wall is according to reality
The difference of border situation offers Interstitial Water water inlet at different height and takes gap water sample, it can be achieved that being layered, and utilizes soil gap
The method of hydromining collector acquisition soil gap water can effectively eliminate wall effect；
Third is separately filled with polypropylene filler/inertia high aluminium ball for hydrophilic/hydrophobic pesticide in cylindrical filter arrangement,
Pesticide loss as caused by suction-operated in infitration process in filtrate is considerably reduced, the standard of pesticide in filtrate is conducive to
Acknowledgement collection；
4th, the present apparatus is placed on Multi-layer supporting platform, and up-down structure is compact clearly demarcated, easy to remove, and each environmental factor: such as:
The empirical factors such as temperature, illumination are controllable, thus, it has good value for applications.
Detailed description of the invention
Attached drawing 1 --- structure of the invention schematic illustration.
Soil gap hydromining collector schematic diagram in attached drawing 2 --- attached drawing 1.
The corresponding component names of each label are as follows in figure:
1 water tank, 2 flowing water Valves, 3 hose connection devices, 4 inlet valves, 5 pesticides migration experiment column, the sampling of 6 pillars
Mouthful, 7 soil gap hydromining collectors, 8 Interstitial Water water inlets, 9 cylindrical filter arrangements, 10 liquid valve doors, 11 filtrate collections,
12 soil gap water collectors, 13 soil gap water collection hole, 14 screw connections, 15 Multi-layer supporting platforms, 160,000
To wheel.
Specific embodiment
The present invention provides a kind of device for simulating pesticide Transport And Transformation process in paddy water and soil system.The present apparatus is arranged three
Pesticide migration experiment column is connected by rubber hose with water tank as experimental group, pesticide migration experiment column, and bottom passes through spiral shell
Line attachment device is fixedly connected with cylindrical filter arrangement.Injection in experiment column, which is migrated, to pesticide from water tank irrigates water layer, etc.
Water layer fall naturally it is dry after, pour water again, and so on, with realize in paddy water and soil system " pour water → falling dry →... ... → pour water
→ fall it is dry " Hydrodynamic Process.Experiment column different height is migrated using soil gap hydromining collector acquisition gap water sample, in pesticide
The pillar sample tap layering soil sampling at place collects deep percolation liquid using cylindrical filter arrangement, by analyzing these samples taken,
Further determine that Spatio-temporal Distribution and response mechanism of the pesticide in overlying water layer, soil, Interstitial Water.
Further description is done to the present invention with reference to the accompanying drawing.
As shown in Figs. 1-2, in a kind of simulation paddy water and soil system of the invention pesticide Transport And Transformation process device, including
Water tank 1, pesticide migration experiment column 5, soil gap hydromining collector 7, soil gap water collector 12, cylindrical filter arrangement 9,
Filtrate collection 11, hose connection device 3, screw connection 14, Multi-layer supporting platform 15.The water tank 1 is placed in
The top layer of Multi-layer supporting platform 15,1 leading flank bottom of water tank offer flowing water Valve 2, and flowing water Valve 2 is connected by hose
Device 3 migrates inlet valve 4 at experiment 5 water and soil interface of column with pesticide and is connected, by going out at opening and closing 3 both ends of hose connection device
Penstock 2, inlet valve 4 can migrate injection in experiment column 5 to pesticide from water tank 1 and irrigate water layer；Water layer is irrigated every time certainly
It so falls dry and then is poured water next time, and so on, to simulate paddy water and soil system Hydrodynamic Process.
In the present invention, 5 vertical every 5 cm of spacing in right side of pesticide migration experiment column is evenly distributed with pillar sample tap
6, it is layered soil sampling at experiment 5 different height of column by migrating in pesticide, to further determine that the when space division of pesticide in the soil
Cloth feature and transformation rule；Pesticide migration about 5 column of experiment is opening design, is equipped with inlet valve 4 at water and soil interface, leads to
It crosses hose connection device 3 to be connected with water tank 1, migrates injection in experiment column 5 to pesticide from water tank 1 and irrigate water layer, often
Secondary irrigation water layer falls dry naturally and then is poured water next time, and so on, come simulate in paddy water and soil system " pour water →
Dry →... ... → pouring water → is fallen to fall dry " Hydrodynamic Process；Bottom is connected through a screw thread device 14 and cylindrical filter arrangement 9 is fixed
Connection, pesticide migration experiment 5 inner wall of column are equipped with helicitic texture, can effectively prevent short flow phenomenon.
In the present invention, the soil gap water collection system includes that soil gap hydromining collector 7 and soil gap water are received
Storage 12 seals at the top of soil gap hydromining collector 7, and tip water outlet is arranged at bottom, and side wall is according to the actual situation in different height
Place offers Interstitial Water water inlet 8, and being wrapped up with gauze prevents soil entrance from Interstitial Water water inlet 8 being caused to block, soil
Interstitial Water collection tube 7 is inserted to be migrated in experiment column 5 in soil in pesticide, and bottom passes through pesticide migration experiment column 5 and cylindrical filter
Device 9；Soil gap water collector 12 is placed in immediately below soil gap hydromining collector 7, is set inside soil gap water collector 12
There are multiple collection holes 13,13 present position of internal gathering hole and 7 water outlet position of soil gap hydromining collector correspond.
In the present invention, the filtrate collection system includes cylindrical filter arrangement 9 and filtrate collection 11, cylindrical filter dress
It sets 9 tops and is connected through a screw thread the migration of device 14 and pesticide and tests 5 bottom of column and be fixedly connected, for hydrophily pesticide, cylindricality mistake
Filled polypropylene filler in device 9 is filtered, for hydrophobic pesticidal, is filled with inertia high aluminium ball in cylindrical filter arrangement 9, filler is filled out
The porosity filled is 1:9；9 bottom of cylindrical filter arrangement is equipped with the aperture passed through for soil gap hydromining collector 7, pads around aperture
There is rubber pad, to prevent 9 bottom leak of cylindrical filter arrangement；9 bottom right side of cylindrical filter arrangement is equipped with liquid valve door 10 and filter
Collection 11 is connected, and the volume of each filtrate collection 11 is 500 mL, is equipped at four support legs of support platform 15
Universal wheel 16 facilitates the movement and placement of whole device.
In the present invention, a kind of device for simulating pesticide Transport And Transformation process in paddy water and soil system, comprising the following steps:
The first step is filled the water into water tank 1: water body injection needed for experiment is placed in the water supply of 15 top layer of Multi-layer supporting platform
In water tank 1.
Second step is inserted into soil gap hydromining collector 7: soil gap hydromining collector 7 is passed through 9 bottom of cylindrical filter arrangement
Set aperture, being lined with rubber pad around aperture prevents 11 bottom leak of cylindrical filter arrangement.
Third step fills filler into cylindrical filter arrangement 9: being directed to hydrophily pollutant, fills out into cylindrical filter arrangement 9
Polypropylene filler is filled, the voidage of filling is 1:8；It is high filled with inertia into cylindrical filter arrangement 9 for hydrophobic contaminant
Aluminium ball, the voidage of filling are 1:9；
4th step, the soil sample that homogenizes needed for being packed into experiment: after the soil sample for being used to test is homogenized, uniform paving filling pesticide
In migration experiment column 5；
5th step simulates paddy water and soil system: flowing water Valve 2, water inlet 4 at opening 3 both ends of rubber hose, from water tank 1
It is middle to migrate injection irrigation water layer in experiment column 5 to pesticide, water layer is irrigated every time to be fallen dry and then poured water naturally next time,
And so on, the Hydrodynamic Process of " pour water → falling dry →... ... → pour water → fall and is dry " simulated in paddy water and soil system；
6th step, the sampling and test of soil sample, gap water sample: during simulating paddy water and soil system, soil sample can be from pesticide
The vertical pillar sample tap 6 of migration experiment column 5, which is layered, to be taken out, and gap water sample can be from 7 bottom soil of soil gap hydromining collector
Gap water collector 12 is collected；All sampling operations can carry out in different time nodes, then detect and analyze pesticide and exist
Soil sample and concentration and content in the water sample of gap；
The sampling and test of deep percolation liquid: 7th step is collected from 9 liquid outlet of cylindrical filter arrangement with filtrate collection 11 and is flowed out
Deep percolation liquid, then detect and analyze pesticide concentration and concentration in deep percolation liquid.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. the device of pesticide Transport And Transformation process in a kind of simulation paddy water and soil system, it is characterised in that: described device includes supplying
Water tank (1), pesticide migration experiment column (5), soil gap water collection system, filtrate collection system, hose connection device (3),
Screw connection (14), Multi-layer supporting platform (15)；
The water tank (1) and pesticide migration experiment column (5) are placed on Multi-layer supporting platform (16), water tank (1) position
It is migrated above experiment column (5) in pesticide；Inlet valve (4) are equipped at each pesticide migration experiment column (5) side water and soil interface,
Pesticide migration experiment column (5) is connected by corresponding inlet valve (4), hose connection device (3) with water tank (1),
Column (5) side is vertical is evenly distributed with several pillar sample taps (6) for pesticide migration experiment；
The soil gap water collection system includes several soil gap hydromining collectors (7) and soil gap water collector
(12), several described soil gap hydromining collectors (7) are inserted migrates in experiment column (5) interior soil in pesticide, soil gap water
Collection tube (7) bottom passes through pesticide migration experiment column (5) and cylindrical filter arrangement (9), and soil gap hydromining collector (7) top is close
Envelope, soil gap hydromining collector (7) bottom are equipped with water outlet, set respectively on the side wall of several soil gap hydromining collectors (7)
There are Interstitial Water water inlet (8), Interstitial Water water inlet (8) height of several soil gap hydromining collectors (7) is different；Soil gap
Water collector (12) is placed below soil gap hydromining collector (7)；
The filtrate collection system includes several cylindrical filter arrangements (9) and several filtrate collections (11), cylindrical filter
Device (9) is connected through a screw thread device (14) and migrates the connection of experiment column (5) bottom with corresponding pesticide, and filtrate collection (11) is used
In the deep percolation liquid that collection is flowed out from corresponding cylindrical filter arrangement (9) liquid valve door (10).
2. the device of pesticide Transport And Transformation process, special in a kind of simulation paddy water and soil system according to claim 1
Sign is: the water tank (1) is placed in Multi-layer supporting platform (15) top layer, and water tank indicates scale, water tank on (1)
(1) leading flank bottom is set there are three flowing water Valve (2), three flowing water Valves (2) respectively by corresponding rubber hose and
Corresponding pesticide migration experiment column (5) is connected.
3. the device of pesticide Transport And Transformation process, special in a kind of simulation paddy water and soil system according to claim 2
Sign is: pesticide migration experiment column (5) is placed in Multi-layer supporting platform (15) bottom, on Multi-layer supporting platform bottom (15) simultaneously
There are three the migrations of identical pesticide to test column (5) for column setting, indicates scale, each pesticide on each pesticide migration experiment column (5)
Migration experiment vertical every 5 cm of spacing in column (5) side is uniformly distributed the pillar sample tap (6), and pillar sample tap (6) is for taking
Soil sample；
Pesticide migration experiment column (5) is opening design up and down, is fixed with a circle at pesticide migration experiment column (5) outlet at bottom
The radius of shape sieve tray, the circular screen orifice plate is 25cm, with a thickness of 1cm；
The setting inlet valve (4), inlet valve (4) are located at water and soil interface on the right side of each pesticide migration experiment column (5)
Above the top pillar sample tap (6), valve (4) passes through corresponding flowing water Valve (2) phase in rubber hose and water tank (1)
Even；
Each contaminant transportation experiment column (5) inner wall is equipped with helicitic texture.
4. the device of pesticide Transport And Transformation process, special in a kind of simulation paddy water and soil system according to claim 1
Sign is: soil gap hydromining collector (7) the bottom water outlet is prong structure, the gap of soil gap hydromining collector (7)
Water water inlet (8) is wrapped up with gauze.
5. the device of pesticide Transport And Transformation process, special in a kind of simulation paddy water and soil system according to claim 1
Sign is: the soil gap water collector (12) is placed in immediately below soil gap hydromining collector (7), soil gap water collector
(12) internal each and every one to be collected hole (13) equipped with several, internal gathering hole (13) present position and soil gap hydromining collector (7) position
Set one-to-one correspondence.
6. the device of pesticide Transport And Transformation process, special in a kind of simulation paddy water and soil system according to claim 1
Sign is: cylindrical filter arrangement (9) bottom is furnished with multiple apertures, and hole diameter is than soil gap hydromining collector (7) diameter
It is bigger so that Interstitial Water collection tube passes through；
For hydrophily pollutant, the interior filled polypropylene filler of cylindrical filter arrangement (9), the voidage of filling is 1:8；
For hydrophobic contaminant, inertia high aluminium ball is filled in cylindrical filter arrangement (9), the voidage of filling is 1:9；
Cylindrical filter arrangement bottom right side offers liquid valve door (10).
7. the device of pesticide Transport And Transformation process, special in a kind of simulation paddy water and soil system according to claim 1
Sign is: the volume of each filtrate collection (11) is 500 mL.
8. a kind of method of pesticide Transport And Transformation process in simulation paddy water and soil system, it is characterised in that: the method is using power
Benefit requires the device of pesticide Transport And Transformation process in simulation paddy water and soil system described in any one of 1-7, comprising the following steps:
The first step, to water filling in water tank (1): water body injection needed for experiment is placed in Multi-layer supporting platform (15) top layer
In water tank (1)；
Second step is inserted into soil gap hydromining collector (7): soil gap hydromining collector (7) is passed through cylindrical filter arrangement (9) bottom
Aperture set by portion, being lined with rubber pad around aperture prevents cylindrical filter arrangement (9) bottom leak；
Third step fills filler into cylindrical filter arrangement (9): being directed to hydrophily pollutant, fills out into cylindrical filter arrangement (9)
Polypropylene filler is filled, the voidage of filling is 1:8；For hydrophobic contaminant, inertia is filled with into cylindrical filter arrangement (9)
High aluminium ball, the voidage of filling are 1:9；
4th step, the soil sample that homogenizes needed for being packed into experiment: after the soil sample for being used to test is homogenized, uniform paving filling pesticide
In migration experiment column (5)；
5th step simulates paddy water and soil system: the valve at hose connection device (3) both ends is opened, from water tank (1) to agriculture
Water layer is irrigated in injection in medicine migration experiment column (5)；It irrigates water layer every time to fall dry and then poured water next time naturally, so
Back and forth, to simulate paddy water and soil system Hydrodynamic Process；
6th step, the sampling and test of soil sample, gap water sample: during simulating paddy water and soil system, soil sample can be from pesticide
The vertical pillar sample tap (6) of migration experiment column (5), which is layered, to be taken out, and gap water sample can be from soil gap hydromining collector (7) bottom
It is collected with soil gap water collector (12)；All sampling operations can carry out in different time nodes, then detect and divide
Analyse concentration and content of the pesticide in soil sample and gap water sample；
The sampling and test of deep percolation liquid: 7th step is collected with filtrate collection (11) from cylindrical filter arrangement (9) liquid valve
The deep percolation liquid of door (10) outflow, then detects and analyzes pesticide concentration and concentration in deep percolation liquid.
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| CN109975511A (en) * | 2019-03-26 | 2019-07-05 | 清华大学 | Simulate the experimental provision and its experimental method that micro- plastics migrate in the soil |
| CN113092313A (en) * | 2021-03-16 | 2021-07-09 | 湖北工业大学 | Composite pollution heavy metal ion migration test device with loading function |
| CN113588209A (en) * | 2021-07-30 | 2021-11-02 | 交通运输部天津水运工程科学研究所 | Experimental device and method for phosphorus flux water tank in river |
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