CN105334309B - A kind of heavy metal-polluted soil Transport And Transformation simulator - Google Patents
A kind of heavy metal-polluted soil Transport And Transformation simulator Download PDFInfo
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- CN105334309B CN105334309B CN201510708447.9A CN201510708447A CN105334309B CN 105334309 B CN105334309 B CN 105334309B CN 201510708447 A CN201510708447 A CN 201510708447A CN 105334309 B CN105334309 B CN 105334309B
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Abstract
The present invention relates to a kind of heavy metal-polluted soil Transport And Transformation simulator, including:Leaching column, liquid-storage system, multiple sets of collection detection unit and acquisition and control system are controlled the variation of soil water potential in leaching column by liquid-storage system, migrate and convert in the soil so as to fulfill heavy metal.The leaching liquor in leaching column is collected and detected by collecting detection unit, acquisition and control system can be acquired, store and control to leaching liquor parameter and soil parameters.Storage, collection, detection and the data of the simulator collection leaching liquor are collected in one, it is compact-sized, easy to operate, parameter optimization means are provided for the foundation of heavy metal in soil ion migration transformation model, shorten the test period, improve test accuracy, result of study is more scientific reliable, is the tool for carrying out the experimental studies such as soil heavy metal ion migration.
Description
Technical field
The present invention relates to environmental geotechnical technical field, more particularly to a kind of heavy metal-polluted soil Transport And Transformation simulation dress
It puts.
Background technology
It is shown according to the national Investigation of Soil Pollution bulletin that Chinese Ministry of Environmental Protection issues:National soil environment situation is not allowed totally to find pleasure in
It sees, some areas soil pollution is heavier, and arable soil environmental quality causes anxiety, and industry and mining discard ground soil environment outstanding problem.Entirely
The total exceeding standard rate of state's soil is 16.1%, wherein slightly, slightly, moderate and serious pollution point position ratio be respectively 11.2%,
2.3%th, 1.5% and 1.1%.Based on inorganic type, organic type takes second place pollution type, and compound pollution proportion is smaller, inorganic dirt
Dye exceeded digit of object accounts for the 82.8% of all super punctuation bits.Investigation result is shown:In China's soil pollution, heavy metal pollution
Occupy sizable ratio, and seriously polluted, be badly in need of administering.Therefore the migration conversion process of heavy metal ion in the soil is understood fully
The importance administered for contaminated soil is self-evident.
By the migration conversion process of field test research heavy metal in the soil, not only operation difficulty is big, cost consumption
It is more, and the test period is long, can not meet the urgency administered at this stage for contaminated soil, traditional soil huge sum of money at all
It is that the hole freely leaked is equipped with below earth pillar to belong to ion migration transformation experiment device, after soil water saturation, by heavy metal solution
Inject earth pillar in, start downwards leakage, under ooze the gravitational potential for fully relying on the soil water, progress is very slow, and test accuracy is poor, and
Heavy metal migrates downward into completely by gravitational potential, there is very big inhomogeneity, and experimental result is inaccurate.
Method of the prior art can only do the migration experiment of soil saturation water heavy metal, and the constraint of soil is broken away from by Free water
Start to migrate, lead to similar experimental result not science, and experimental period is long, the authenticity and accuracy of experiment can not be verified.
Invention content
A kind of heavy metal-polluted soil Transport And Transformation simulator provided by the invention, solves or part solves the prior art
In method can only do soil saturation water heavy metal migration experiment, lead to result of the test not science, experimental period is long, experiment it is true
The technical issues of reality and accuracy can not be verified, realizes that the test period is short, experimental error is small, measuring accuracy is high and can realize
The technique effect of the migration of heavy metal in the soil and conversion process dynamic monitoring.
The present invention provides a kind of heavy metal-polluted soil Transport And Transformation simulator, including:
Leaching column, outside are sealing structure, and inside sets accommodating space;The first inlet is opened up at the top of the leaching column
And exhaust outlet, the different detection mouth of multiple vertical heights is offered all over the body, and bottom opens up the second inlet and the detection mouth;
Liquid-storage system, the liquid-storage system include:Distilled water storage tank, the first peristaltic pump, heavy metal solution holding vessel and
Second peristaltic pump;The distilled water storage tank connects second inlet by pipeline;First peristaltic pump is arranged on institute
It states on the pipeline between distilled water storage tank and the leaching column;The heavy metal solution holding vessel connects described by pipeline
One inlet;Second peristaltic pump is arranged on the pipeline between the heavy metal solution holding vessel and the leaching column;
Multiple sets of collection detection unit, quantity are identical with the quantity of the detection mouth;The collection detection unit includes:Sampling
Tank, sampling pipe, soil conductivity sensor and soil pH sensor;The detection of the leaching column is stretched into one end of the sampling pipe
Mouthful, the other end connects the sample can;The soil conductivity sensor and soil pH sensor are arranged in the leaching column,
It is arranged close to the sampling pipe;PH electrodes, conductivity electrode, oxidation-reduction potential electrode and a huge sum of money are provided in the sample can
Belong to electrode;
Acquisition and control system, the acquisition and control system include:Multiple data collectors and data set
Hop controller;Multiple data collectors correspond to more set collection detection units;The data collector and pH electricity
Pole, conductivity electrode, oxidation-reduction potential electrode and the heavy metal electrode are connected by conducting wire;The data acquisition system controller
It is electrically connected with the soil conductivity sensor, the soil pH sensor and multiple data collectors;
Wherein, when carrying out simulation test, soil is filled in the accommodating space and forms earth pillar, the top of the earth pillar
Set gradually permeable filter membrane, permeable rock layer and glass bead layer respectively with lower section;The glass bead layer above the earth pillar is close to
The top inner wall of the leaching column;The glass bead layer below the earth pillar is close to the bottom interior wall of the leaching column;It is described
Simulation test can simulate migration and conversion process of the heavy metal ion in saturated soil, can also simulate heavy metal ion non-full
With the migration in soil and conversion process.
Preferably, the leaching column includes:Leaching wall, head cover, bottom cover and two sealing rings;
The leaching wall is the hollow cylinder of open at both ends, and the both ends of the leaching wall extend outward setting width respectively
The ring flat-plate of degree;
The head cover is fixedly connected by bolt with the ring flat-plate at the top of the leaching wall;
The bottom cover is fixedly connected by bolt with the ring flat-plate of the leaching wall bottom;The bottom and bottom of the bottom cover
Seat is fixedly connected;
The sealing ring is in circular ring shape;One of them described sealing ring is fixed between the head cover and leaching wall, another
A sealing ring is fixed between the bottom cover and leaching wall;
Wherein, the leaching wall, head cover integrally form the hollow cylinder of sealing with the bottom cover;The head cover offers
First inlet and the exhaust outlet;The leaching wall offers the different detection mouth of multiple vertical heights;It is described
Bottom cover offers second inlet and the detection mouth.
Preferably, the leaching wall, head cover and bottom cover all use transparent pvc material.
Preferably, the liquid-storage system further includes:Adjustable air compressor machine, pressure gauge, partial pressure valve, first flowmeter and second
Flowmeter;
The adjustable air compressor machine is connected by tracheae with the partial pressure valve;
The pressure gauge is arranged on the tracheae between the adjustable air compressor machine and partial pressure valve;
There are two gas vent, one of them described gas vent passes through tracheae and the distilled water for the partial pressure valve setting
Storage tank connects, another described gas vent is connected by tracheae with the heavy metal solution holding vessel;
The first flowmeter is arranged on the pipeline between first peristaltic pump and the leaching column;
The second flowmeter is arranged on the pipeline between second peristaltic pump and the leaching column.
Preferably, the collection detection unit further includes:Fixator, filter, solenoid valve and third flowmeter;
The fixator is fixedly connected with the leaching column, and the sampling pipe can be fixed on to the inspection of the leaching column
Survey mouth;
The filter, solenoid valve and third flowmeter are successively set on the sampling pipe;The filter is close to institute
State leaching column;
The soil conductivity sensor and soil pH sensor are located at same level height with the corresponding sampling pipe.
Preferably, the heavy metal solution holding vessel, soil conductivity sensor, soil pH sensor, filter, electricity
Magnet valve, third flowmeter, pH electrodes, conductivity electrode, oxidation-reduction potential electrode, heavy metal electrode and sample can are using resistance to
Acid and alkali corrosion material.
Preferably, the simulator includes 5 sets of collection detection units and 5 data collectors;
The whole body of the leaching column offers the different detection mouth of 4 vertical heights, and bottom opens up 1 detection
Mouthful;The vertical spacing of each detection mouth is setting value;
5 sets of sampling pipes collected in detection unit connect respectively with 5 detection mouths;
5 data collectors are separately positioned on 5 sample cans;
Wherein, the data collector can receive the corresponding pH electrodes, conductivity electrode, oxidation-reduction potential electrode
And the electric signal that the heavy metal electrode is sent, and generate corresponding informance.
Preferably, the acquisition and control system further includes:Data terminal;
The data terminal is computer;The data terminal is electrically connected with the data acquisition system controller;
Wherein, the data acquisition system controller can receive and store the information that the data collector is sent;The data
Terminal can show and handle described information.
Heavy metal-polluted soil Transport And Transformation simulator provided by the invention controls the soil water in leaching column by liquid-storage system
The variation of gesture passes through heavy metal solution collection of multiple collection detection units to leaching column at different height and parameter detecting, soil
Earth conductivity sensor and soil pH sensor detect the conductivity of soil in real time and pH, pH electrode, conductivity electrode, oxidation are gone back
Former current potential electrode, heavy metal electrode can detect pH, conductivity, oxidation-reduction potential, the heavy metal concentration of leaching liquor, data in real time
Acquisition can be acquired and store to the information of heavy metal solution parameter and soil parameters with control system, so as to fulfill heavy metal
Ion migrates the rapid scan with conversion process in the soil.Therefore, the storage of the simulator collection solution, collection, detection and
Data are collected in one, compact-sized, easy to operate, and parameter is provided for soil heavy metal ion migration and transformation model foundation
Optimization means shorten the test period, improve test accuracy, and result of study is more scientific reliable, are to carry out heavy metal-polluted soil to move
The tool of the experimental studies such as shifting and conversion can realize heavy metal in soil migration and real-time, the efficient and monitoring of conversion process.
Description of the drawings
Fig. 1 is the configuration diagram of heavy metal-polluted soil Transport And Transformation simulator provided in an embodiment of the present invention.
The component that attached figure label represents is followed successively by:1 adjustable air compressor machine, 2 pressure gauges, 3 partial pressure valves, 4 distilled water storage tanks,
5 first peristaltic pumps, 6 first flowmeters, 7 heavy metal solution storage tanks, 8 second peristaltic pumps, 9 second flowmeters, 10 first feed liquors
Mouth, 11 head covers, 12 exhaust outlets, 13 sealing rings, 14 beades, 15 bolts, 16 permeable rock layers, 17 permeable filter membranes, 18 soil conductivities
Rate sensor, 19 soil pH sensors, 20 leaching walls, 21 bottom covers, 22 pedestals, 23 second inlets, 24 fixators, 25 filterings
Device, 26 solenoid valves, 27 third flowmeters, 28pH electrodes, 29 conductivity electrodes, 30 oxidation-reduction potential electrodes, 31 heavy metals electricity
Pole, 32 sample cans, 33 data collectors, 34 data acquisition system controllers, 35 data terminals.
Specific embodiment
The present invention is explained in further detail below in conjunction with the accompanying drawings:
The embodiment of the present application provides a kind of heavy metal-polluted soil Transport And Transformation simulator, solves or part solves now
There is the method in technology that can only do the migration experiment of soil saturation water heavy metal, lead to result of the test not science, the test period is long, examination
The technical issues of authenticity and accuracy tested can not be verified, by setting leaching column, liquid-storage system, multiple sets of collection detection unit
And acquisition and control system;Realize that the test period is short, test error is small, measuring accuracy is high and heavy metal can be realized in soil
The technique effect of migration and conversion process dynamic monitoring in earth.
The embodiment of the present application provides a kind of heavy metal-polluted soil Transport And Transformation simulator, including:Leaching column, liquid storage system
System, multiple sets of collection detection unit and acquisition and control system 34.
The outside of leaching column is sealing structure, and inside sets accommodating space;The first inlet 10 is opened up at the top of leaching column
And exhaust outlet 12, the different detection mouth of multiple vertical heights is offered all over the body, and bottom opens up the second inlet 23 and detection mouth.
Liquid-storage system includes:Distilled water storage tank 4, the first peristaltic pump 5,7 and second peristaltic pump of heavy metal solution holding vessel
8;Distilled water storage tank 4 connects the second inlet 23 by pipeline;First peristaltic pump 5 is arranged on distilled water storage tank 4 and leaching
On pipeline between column;Heavy metal solution holding vessel 7 connects the first inlet 10 by pipeline;Second peristaltic pump 8 is arranged on weight
On pipeline between metallic solution holding vessel 7 and leaching column.
Multiple sets of collection detection unit, quantity are identical with the quantity of detection mouth;Detection unit is collected to include:Sample can 32 is adopted
Sample pipe, soil conductivity sensor 18 and soil pH sensor 19;The detection mouth of leaching column, the other end are stretched into one end of sampling pipe
Connect sample can 32;Soil conductivity sensor 18 and soil pH sensor 19 are arranged in leaching column, are arranged close to sampling pipe;
PH electrodes 28, conductivity electrode 29, oxidation-reduction potential electrode 30 and heavy metal electrode 31 are provided in sample can 32.
Acquisition and control system includes:Multiple data collectors 33 and data acquisition system controller 34;Multiple data are adopted
Storage 33 corresponds to multiple sets of collection detection unit;Data collector 33 and pH electrodes 28, conductivity electrode 29, oxidation-reduction potential electricity
Pole 30 and heavy metal electrode 31 are connected by conducting wire;Data acquisition system controller 34 is passed with soil conductivity sensor 18, soil pH
Sensor 19 and multiple data collectors 33 are electrically connected.
Wherein, when carrying out simulation test, soil is filled in accommodating space and forms earth pillar, divided above and below earth pillar
Permeable filter membrane 17, permeable rock layer 16 and glass bead layer 14 are not set gradually;Glass bead layer 14 above earth pillar is close to leaching column
Top inner wall;Glass bead layer 14 below earth pillar is close to the bottom interior wall of leaching column;Simulation test can simulate heavy metal ion and exist
Migration and conversion process in saturated soil can also simulate migration and conversion process of the heavy metal ion in unsaturated soil.
Further, which includes:Leaching wall 20, head cover 11, bottom cover 21 and two sealing rings 13;Leaching wall 20 is
The hollow cylinder of open at both ends, the both ends of leaching wall 20 extend outward the ring flat-plate of setting width respectively;Head cover 11 passes through spiral shell
Bolt 15 is fixedly connected with the ring flat-plate at 20 top of leaching wall;Bottom cover 21 is fixed by bolt 15 and the ring flat-plate of 20 bottom of leaching wall to be connected
It connects;The bottom of bottom cover 21 is fixedly connected with pedestal 22;Sealing ring 13 is in circular ring shape;One of sealing ring 13 is fixed on head cover 11
Between leaching wall 20, another sealing ring 13 is fixed between bottom cover 21 and leaching wall 20.
Wherein, leaching wall 20, head cover 11 and the hollow cylinder of the whole composition sealing of bottom cover 21;Head cover 11 offers first
Inlet 10 and exhaust outlet 12;Leaching wall 20 offers the different detection mouth of multiple vertical heights;Bottom cover 21 offer second into
Liquid mouth 23 and detection mouth.As a kind of preferred embodiment, leaching wall 20, head cover 11 and bottom cover 21 all use transparent polychlorostyrene second
Alkene material.
Further, which further includes:Adjustable air compressor machine 1, pressure gauge 2, partial pressure valve 3, first flowmeter 6 and
Two flowmeters 9;Adjustable air compressor machine 1 is connected by tracheae with partial pressure valve 3;Pressure gauge 2 is arranged on adjustable air compressor machine 1 and partial pressure valve 3
Between tracheae on;For the setting of partial pressure valve 3 there are two gas vent, one of gas vent passes through tracheae and distilled water storage tank
4 connections, another gas vent are connected by tracheae with heavy metal solution holding vessel 7;First flowmeter 6 is arranged on the first wriggling
On pipeline between pump 5 and leaching column;Second flowmeter 9 is arranged on the pipeline between the second peristaltic pump 8 and leaching column.
Further, detection unit is collected to further include:Fixator 24, filter 25, solenoid valve 26 and third flowmeter 27;
Fixator 24 is fixedly connected with leaching column, and sampling pipe can be fixed on to the detection mouth of leaching column;Filter 25, solenoid valve 26 and
Three flowmeters 27 are successively set on sampling pipe;Filter 25 is close to leaching column;Soil conductivity sensor 18 and soil pH pass
Sensor 19 is located at same level height with corresponding sampling pipe.
As a kind of preferred embodiment, heavy metal solution holding vessel 7, the second peristaltic pump 8, second flowmeter 9, soil electricity
Conductivity sensor 18, soil pH sensor 19, filter 25, solenoid valve 26, third flowmeter 27, pH electrodes 28, electro conductivity
Pole 29, oxidation-reduction potential electrode 30, heavy metal electrode 31 and sample can 32 use acid-alkali-corrosive-resisting material.
As a kind of preferred embodiment, simulator includes 5 sets and collects detection unit and 5 data collectors 33;Leaching
The whole body of dissolved pillar offers 4 different detection mouths of vertical height, and bottom opens up 1 detection mouth;Each detection mouth it is vertical between
Away from for setting value;5 sets of sampling pipes collected in detection unit connect respectively with 5 detection mouths;5 data collectors 33 are set respectively
It puts on 5 sample cans 32;Wherein, data collector 33 can receive corresponding pH electrodes 28, conductivity electrode 29, redox
The electric signal that potential electrode 30 and heavy metal electrode 31 are sent, and generate corresponding informance.
Further, which further includes:Data terminal 35;Data terminal 35 is computer;Data
Terminal 35 is electrically connected with data acquisition system controller 34;Wherein, data acquisition system controller 34 can receive and store data collector
33 information sent;Data terminal 35 can show and handle information.
The operation principle of heavy metal-polluted soil Transport And Transformation simulator provided with reference to specific embodiment the application
And the operation characteristic of all parts is described in detail:
During work, the lower end of leaching wall 20 is fixedly connected with the bolt 15 of bottom cover 21 first, sealing ring 13 is tightly attached to leaching
Between molten 20 lower end of wall and pedestal 22, tiling glass bead layer 14, permeable rock layer 16 are placed in glass bead layer 14 in bottom cover 21, will
Permeable filter membrane 17 is tightly attached in permeable rock layer 16, and soil is packed into leaching wall 20, permeable filter membrane is put successively on soil top
The upper end of head cover 11 with leaching wall 20, is then fixedly connected by the 17th, permeable rock layer 16 and glass bead layer 14 with bolt, sealing ring 13
Be tightly attached between 20 upper end of leaching wall and head cover 11, by heavy metal solution pipeline and distillation waterpipe respectively with the first inlet 10
It is connected with the second inlet 23.
Log-on data acquires and control system, and to electrically activating, air pressure through pressure gauge 2 and is divided adjustable air compressor machine 1 by pipeline
Pressure valve 3 is respectively applied in distillation water store tank 4 and heavy metal solution holding vessel 7, if simulation heavy metal ion is in saturated soil
Migration and conversion process in earth start the first peristaltic pump 5, and the first peristaltic pump 5 extracts distilled water from distillation water store tank 4 out,
First flowmeter 6 controls the flow of distilled water, and distilled water is entered by the second inlet 23 in leaching column by pipeline, distilled water
In distillation water store tank 4 under the action of air pressure, the soil that goes from bottom to top in leaching column carries out saturation, and the air in soil leads to
Exhaust pipe discharge is crossed, if migration and conversion process of the simulation heavy metal ion in unsaturated soil, then starts second and wriggles
Pump 8, the second peristaltic pump 8 extracts heavy metal solution from heavy metal solution holding vessel 7 out, and second flowmeter 9 controls heavy metal solution
Flow, heavy metal solution by pipeline by the first inlet 10 enter leaching column in soil in, heavy metal solution weight
In metallic solution holding vessel 7 under the action of air pressure, soil is penetrated into from top to bottom, starts and collects detection unit, collects detection unit
The soil liquid of respective heights is collected respectively, and the soil liquid enters sample can by filter 25, solenoid valve 26, third flowmeter 27
In 32, filter 25 removes the impurity in solution, and third flowmeter 27 measures the volume of solution, pH electrodes 28 in sample can 32,
Conductivity electrode 29, oxidation-reduction potential electrode 30, heavy metal electrode 31 detect the pH of solution, conductivity, redox respectively
The concentration of current potential, heavy metal, soil conductivity sensor 18, soil pH sensor 19 detect the conductance of soil in leaching column respectively
Rate and pH, the data collector 33 on the top of sample can 32 acquire the detection data of the collection detection unit respectively, and data pass through
Data acquisition system controller 34 is reached in computer.
Heavy metal-polluted soil Transport And Transformation simulator provided by the invention controls the soil water in leaching column by liquid-storage system
The variation of gesture, adjustable air compressor machine 1 can make heavy metal solution and distilled water keep certain pressure, so as to accelerate solution in leaching column
Under ooze, pass through it is multiple collect detection units at different height leaching column heavy metal solution collect and parameter detecting, filtering
Device 25 can remove the impurity in leaching liquor, improve test accuracy, and soil conductivity sensor 18 and soil pH sensor 19 are real-time
The conductivity and pH, pH electrode 28, conductivity electrode 29, oxidation-reduction potential electrode 30, heavy metal electrode 31 for detecting soil can
PH, conductivity, oxidation-reduction potential, the heavy metal concentration of detection leaching liquor in real time, acquisition and control system can be to a huge sum of moneys
The information for belonging to solution parameter and soil parameters is acquired and stores, and migrates and converts in the soil so as to fulfill heavy metal ion
The rapid scan of process.Therefore, storage, collection, detection and the data of the simulator collection solution are collected in one, and structure is tight
It gathers, is easy to operate, providing parameter optimization means for soil heavy metal ion migration and transformation model foundation, shorten experiment week
Phase improves test accuracy, and result of study is more scientific reliable, is the work for carrying out the experimental studies such as heavy metal-polluted soil migration and conversion
Tool can realize heavy metal in soil migration and real-time, the efficient and monitoring of conversion process.
Above-described specific embodiment has carried out the purpose of the present invention, technical solution and advantageous effect further
It is described in detail, it should be understood that the foregoing is merely the specific embodiment of the present invention, is not limited to this hair
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection domain within.
Claims (4)
1. a kind of heavy metal-polluted soil Transport And Transformation simulator, which is characterized in that the simulator includes:
Leaching column, outside are sealing structure, and inside sets accommodating space;The leaching column includes:Leaching wall, head cover, bottom cover and
Two sealing rings;The leaching wall is the hollow cylinder of open at both ends, and the both ends of the leaching wall extend outward respectively to be set
The ring flat-plate of fixed width degree;The head cover is fixedly connected by bolt with the ring flat-plate at the top of the leaching wall;The bottom cover passes through
Bolt is fixedly connected with the ring flat-plate of the leaching wall bottom;The bottom of the bottom cover is fixedly connected with pedestal;The sealing
Circle is in circular ring shape;One of them described sealing ring is fixed between the head cover and leaching wall, another described sealing ring is fixed
Between the bottom cover and leaching wall;Wherein, the leaching wall, head cover integrally form the hollow cylinder of sealing with the bottom cover
Body;The head cover offers the first inlet and exhaust outlet;The leaching wall offers the different detection mouth of multiple vertical heights;
The bottom cover offers the second inlet and detection mouth;
Liquid-storage system, the liquid-storage system include:Distilled water storage tank, the first peristaltic pump, heavy metal solution holding vessel and second
Peristaltic pump;The distilled water storage tank connects second inlet by pipeline;First peristaltic pump is arranged on the steaming
On pipeline between distilled water storage tank and the leaching column;The heavy metal solution holding vessel by pipeline connect described first into
Liquid mouth;Second peristaltic pump is arranged on the pipeline between the heavy metal solution holding vessel and the leaching column;The storage
Liquid system further includes:Pressure gauge, first flowmeter, second flowmeter, adjustable air compressor machine and partial pressure valve;The first flowmeter is set
It puts on the pipeline between first peristaltic pump and the leaching column;The second flowmeter is arranged on second peristaltic pump
On pipeline between the leaching column;The adjustable air compressor machine is connected by tracheae with the partial pressure valve;The pressure gauge is set
It puts on the tracheae between the adjustable air compressor machine and the partial pressure valve;The partial pressure valve is set there are two gas vent, wherein
One gas vent is connected by tracheae with the distilled water storage tank, another described gas vent passes through tracheae and institute
State the connection of heavy metal solution holding vessel;
Multiple sets of collection detection unit, quantity are identical with the quantity of the detection mouth;The collection detection unit includes:Sample can,
Sampling pipe, soil conductivity sensor and soil pH sensor;The detection mouth of the leaching column is stretched into one end of the sampling pipe,
The other end connects the sample can;The soil conductivity sensor and soil pH sensor are arranged in the leaching column, are leaned on
The nearly sampling pipe arrangement;PH electrodes, conductivity electrode, oxidation-reduction potential electrode and heavy metal are provided in the sample can
Electrode;The collection detection unit further includes:Fixator, filter, solenoid valve and third flowmeter;The fixator with it is described
Leaching column is fixedly connected, and the sampling pipe can be fixed on to the detection mouth of the leaching column;The filter, solenoid valve and
Third flowmeter is successively set on the sampling pipe;The filter is close to the leaching column;The soil conductivity sensing
Device and soil pH sensor are located at same level height with the corresponding sampling pipe;
Acquisition and control system, the acquisition and control system include:Multiple data collectors and data acquisition system control
Device processed;Multiple data collectors correspond to more set collection detection units;The data collector and the pH electrodes, electricity
Conductance electrode, oxidation-reduction potential electrode and the heavy metal electrode are connected by conducting wire;The data acquisition system controller and institute
Soil conductivity sensor, the soil pH sensor and multiple data collectors is stated to be electrically connected;The data acquisition
It is further included with control system:Data terminal;The data terminal is computer;The data terminal and the data acquisition system controller
It is electrically connected;Wherein, the data acquisition system controller can receive and store the information that the data collector is sent;The data
Terminal can show and handle described information;
Wherein, when carrying out simulation test, soil is filled in the accommodating space and forms earth pillar, the top of the earth pillar is under
Side sets gradually permeable filter membrane, permeable rock layer and glass bead layer respectively;The glass bead layer above the earth pillar is close to described
The top inner wall of leaching column;The glass bead layer below the earth pillar is close to the bottom interior wall of the leaching column;The simulation
Experiment can simulate migration and conversion process of the heavy metal ion in saturated soil, can also simulate heavy metal ion in unsaturated soil
Migration and conversion process in earth.
2. simulator as described in claim 1, which is characterized in that
The leaching wall, head cover and bottom cover all use transparent pvc material.
3. simulator as described in claim 1, which is characterized in that
The heavy metal solution holding vessel, soil conductivity sensor, soil pH sensor, filter, solenoid valve, third flow
Meter, pH electrodes, conductivity electrode, oxidation-reduction potential electrode, heavy metal electrode and sample can use acid-alkali-corrosive-resisting material.
4. simulator as described in claim 1, which is characterized in that
The simulator includes 5 sets of collection detection units and 5 data collectors;
The whole body of the leaching column offers the different detection mouth of 4 vertical heights, and bottom opens up 1 detection mouth;
The vertical spacing of each detection mouth is setting value;
5 sets of sampling pipes collected in detection unit connect respectively with 5 detection mouths;
5 data collectors are separately positioned on 5 sample cans;
Wherein, the data collector can receive the corresponding pH electrodes, conductivity electrode, oxidation-reduction potential electrode and institute
The electric signal of heavy metal electrode transmission is stated, and generates corresponding informance.
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