CN104535716B - Device for simulating motion transfer of charcoal in soil system - Google Patents
Device for simulating motion transfer of charcoal in soil system Download PDFInfo
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- CN104535716B CN104535716B CN201410721416.2A CN201410721416A CN104535716B CN 104535716 B CN104535716 B CN 104535716B CN 201410721416 A CN201410721416 A CN 201410721416A CN 104535716 B CN104535716 B CN 104535716B
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Abstract
The invention relates to a device for simulating motion transfer of charcoal in a soil system, which comprises an original pool, a water pump, a pH equalizing tank, a stirring device, a simulated soil column and an automatic part collector. The original pool comprises a solution injection bottle and a conduit; the pH equalizing tank comprises a pH electrode, a pH meter, charcoal particles; the stirring device comprises a magneton and the stirring device; valves are arranged at upper and lower ends of the simulated soil column, an air outlet is arranged at top, a silica gel pad is arranged in flange plates at upper and lower ends, the porous filter panels are respectively placed at upper and lower position of a filling medium; the automatic part collector comprises an outlet pipe, a timing rotating disk and a liquid outlet collection container; a water inlet of the pH equalizing tank is connected to the original pool, the water inlet of the stirring device is connected to the water outlet of the pH equalizing tank, the water inlet of the simulated soil column is connected to the water outlet of the stirring device, and the water outlet of the simulated soil column is connected to the automatic part collector. The device for simulating motion transfer of charcoal enables real-time acquisition of distribution condition of charcoal concentration on time and space as well as real-time change of output liquid volume, and has the characteristics of high automation degree, high accuracy, less volume of experiment apparatus, less interference factor and easily controlled condition.
Description
Technical field
The invention belongs to environmental technology field, it is related to a kind of charcoal and moves in soil system the analog of migration.
Background technology
Warming with global climate, the control of greenhouse gases is extremely urgent, and how fast and effeciently fixing empty
Carbon dioxide in gas is the significant challenge that carbon sequestration strategy faces.Traditional Carbon fixation method is mainly passed through to plant vegetation by carbon admittedly
In biomass or the soil organism, but this technology is not effective for a long time, the carbon dioxide in the air for the plant
Absorption be limited after all, after many years, vegetation may reach carbon saturation, lose continue absorbing carbon dioxide energy
Power.In addition, these vegetation once carry out oxy combustion, the carbon originally wherein fixed can be discharged in the air again, from Carbon cycle
Angle for, be not finally reached the purpose of carbon emission reduction.
In recent years, using the biomass pyrolytics such as trees, grass, agricultural crop straw, feces of livestock and poultry produce a kind of rich in carbon
By-product charcoal carries out the fixation of carbon, and its carbon sequestration effect is compared more traditional Carbon fixation method and is greatly improved.With
When, preserve very fast due to charcoal to the transfer of carbon in biomass, has very high biochemistry and heat stability, can protect for a long time
It is stored in and be not mineralized in environment it is considered to be fixing a kind of permanently effective method of carbon dioxide in air.Except carbon sequestration
Effect, charcoal can be organic with enriched, improves soil fertility, improves crop yield.And charcoal have larger
Specific surface area and microcellular structure, surface functional group enriches, and has the effect of absorption to various pollutant.
And motion migration in soil for the charcoal, return and become and biological effectiveness not only affects stablizing of charcoal itself
Property, and can affect charcoal absorption pollutant (as heavy metal, organic pollution polycyclic aromatic hydrocarbon/PBDE etc.) and
The motion migration of nutrient substance (as n, p, k, ca etc.) and edaphon, therefore research charcoal is in soil filled media
In motion migration and deposition releasing mechanism seem extremely important.Move in actual soil environment migration with regard to charcoal at present
Research also little, in traditional soil column leaching, the complicated property of soil matrix makes to change research field and is much restricted；And
In earth pillar, the real motion conditions of charcoal granule also cannot be observed.And charcoal simulating lab test moves as research charcoal
Move one of mode of experiment, there is compared with field trial process is simple, technically reliable, experimental provision small volume, interference factor
Less, the features such as condition is easy to control and become the first-selection of scholar's research outside Current Domestic, therefore charcoal migration experiment research
It is highly desirable to.Due to charcoal move migration in soil environment and deposition releasing mechanism research be one with test combine tight
Close emerging cross discipline, will obtain compellent achievement must be tested using special instrument, and domestic having no shows
The complete sets of instrument becoming can use, and this restrict the development of charcoal migration mechanism research in soil.
Therefore, designer in view of the foregoing, develop a kind of charcoal move in soil system migration simulation dress
Put.
Content of the invention
The purpose of the present invention is for existing technological deficiency, provide a kind of charcoal move in soil system migration
Analog, in order to carry out the related experiment of charcoal migration.Solve to study charcoal motion migration and deposition release indoors
Mechanism problem, test the conclusion that obtains can be used as being applied to the theoretical foundation that soil environment is repaired to charcoal.
The present invention is to solve above-mentioned technical problem, employs the following technical solutions:
A kind of charcoal move in soil system migration analog it is characterised in that: include former pond, water pump,
Ph regulating reservoir, agitating device, Simulated soil columns and automatic fraction collector, wherein:
Described former pond includes solution injection bottle and conduit；Described ph regulating reservoir includes ph electrode, ph meter, charcoal
Grain, in described ph electrode insertion ph regulating reservoir, and ph electrode is connected with ph meter；Described agitating device includes magneton, described magneton
In agitating device, above described agitating device, place charcoal；Simulated soil columns described in described Simulated soil columns are column shape container,
It is filled with filled media, the upper and lower ends of column shape container are provided with ring flange, and top is provided with venthole, upper and lower ends method in it
The built-in silicagel pad of blue disk, places porous filter plate respectively at the upper and lower position of filled media；Described automatic fraction collector includes
Water pipe, timing rotating disk and eluate collection container；
The water inlet of described ph regulating reservoir is connected with the outlet of former pond by water pump, and the water inlet of agitating device passes through
Water pump is connected with the outlet of ph regulating reservoir, and the water inlet of Simulated soil columns is connected with the outlet of agitating device by peristaltic pump,
The outlet of Simulated soil columns is connected with automatic fraction collector by water pump.
In the present invention, described solution injection bottle is provided with two, respectively deionized water injection bottle, high concentration salt solutions note
Enter bottle；Wherein deionized water injection bottle is connected with the bottom of former pond by water pump, and high concentration salt solutions injection bottle passes through water pump
It is connected with the top of former pond.
In the present invention, described solution injection bottle is geneva bottle.
In the present invention, described ph regulating reservoir is placed in advance in the charcoal granule of 300-400 mesh being sieving through, and is then injected into former
The saline solution in pond, after Glass rod hand operated mixing, is finally putting into ph electrode regulating solution ph.
In the present invention, in described agitating device magneton whole experiment process be constantly in constant speed stirring state it is ensured that
Charcoal even particulate dispersion is in solution.
In the present invention, described Simulated soil columns place porous filter plate, for ensureing the uniform in whole cross section of Inlet and outlet water
Distribution；Simulated soil columns water inlet and outlet flow velocity is controlled to be 0.5ml/min.
In the present invention, described Simulated soil columns material adopts lucite, high 10cm, internal diameter 1.2cm；Described filled media is
The quartz sand of 20-30 mesh.
In the present invention, the timing rotating disk of described automatic fraction collector is to rotate once every 2min；Eluate collection container
For 100 5ml test tubes.
In the present invention, described water pump 8 is passage digital display peristaltic pump.Described conduit, water inlet pipe, outlet pipe are all silica gel tube.
The present invention adopts above technical scheme compared with prior art, has following technical effect that
(1) former pond can provide variable concentrations to enter the instantaneous switching of aqueous solution, and the change in flow of water inlet and water outlet all can be led to
Cross peristaltic pump to adjust；
(2) regulation different phase can be counted by ph and enter aqueous solution real-time change situation；
(3) continuing magnetic force stirring can avoid the sedimentation of charcoal it is ensured that to enter particle water dispersed in the solution；
(4) porous filter plate of the top and the bottom of Simulated soil columns can ensure the uniformity of Inlet and outlet water, and can prevent filled media
Blocking pipeline；The built-in silicagel pad of ring flange of top and the bottom, good seal performance, leak can be prevented；
(5) water sample, high degree of automation can be gathered out by automatic fraction collector is timing automatic
(6) this plant area area is little, operating is simple and convenient to operate, easily realize automatization, easy care, and small investment is permissible
For the indoor migration experiment of dissimilar charcoal different saturation in different soil properties, obtain data accuracy height, be soil
Earth Particles transport and the advanced means of deposition releasing mechanism research aspect technically reliable.
Brief description
Fig. 1 is the breakthrough curve (ph=6) of charcoal under the conditions of different ionic strength in embodiment 2；
Fig. 2 is the overall recovery of biological carbon under different experimental conditions in embodiment 2 and embodiment 3；
Fig. 3 is the breakthrough curve (ionic strength is 0mm) of charcoal under the conditions of different ph in embodiment 3；
Fig. 4 is the indoor simulation device of the charcoal migration of present invention design；
Fig. 5 is the Simulated soil columns structure chart of present invention design；
In figure label: 1. former pond；2 water pumps；3.ph regulating reservoir；4. agitating device；5. automatic fraction collector；6. mould
Intend earth pillar；7. silicagel pad；8. porous filtering version；9. quartz sand；10. ring flange.
Specific embodiment
With reference to the accompanying drawings and examples technical scheme is described further:
Embodiment 1: referring to Fig. 4, a kind of charcoal of the present invention moves the analog of migration in soil system,
Including former pond 1, water pump 2, ph regulating reservoir 3, agitating device 4, automatic fraction collector 5, Simulated soil columns 6.
Specific implementation step is as follows: the water inlet of ph regulating reservoir 3 is connected with former pond 1 by water pump 2, agitating device 4
Water inlet is connected with the outlet of ph regulating reservoir 3 by water pump 2, and the water inlet of Simulated soil columns 6 passes through peristaltic pump and agitating device 4
Outlet be connected, charcoal granule aaerosol solution is injected in the filled media of Simulated soil columns 6, the going out of final Simulated soil columns 6
The mouth of a river is connected with automatic fraction collector 5 by peristaltic pump, can set sampling routine, realizes different time Real-time Collection sample.
The solution injection bottle setting of former pond 1 is made up of two geneva bottles, respectively deionized water injection bottle, high concentration salt solutions injection
Bottle；Wherein deionized water injection bottle is connected with the bottom of former pond by water pump, high concentration salt solutions injection bottle by water pump and
The top of former pond is connected.Ph regulating reservoir is placed in advance in the charcoal granule of 300-400 mesh being sieving through, and is then injected into former pond
Saline solution, after Glass rod hand operated mixing, with ph count cooperation ph buffer solution adjust solution ph.
Participate in Fig. 5, Simulated soil columns 5 are Organic glass column, high 10cm, internal diameter 1.2cm.Bottom flange dish 10, silicagel pad 7,
Ring flange 10, porous filter plate 8 be successively after installation, by quartz sand 9 compaction in layers of 20-30 mesh, using wet method dress post.As
Unsaturated test need to be carried out, open bottom valve so that clear water from top to bottom constant head flows out, fill complete upper back according to
Secondary put into porous filter plate, ring flange, silicagel pad, ring flange.
Embodiment 2
Using embodiment 1 described device, laboratory test is carried out using Chinese medicines group 20-30 mesh quartz sand, to identical
Grain thing concentration, different ionic strength, the charcoal particle solution of different ph values have carried out migration test, and wherein charcoal granule is
300-400 mesh wheat straw biologic charcoal, water inlet charcoal granule initial concentration is 0.4g/l, ionic strength is followed successively by 0,1,
20mm, ph value is followed successively by 4,6,9, and Inlet and outlet water is 0.5ml/min even velocity of flow, and Simulated soil columns are saturation system, and porosity is
0.42.
In former pond 1 raw water be followed successively by 0,0.001,0.02mol/l nacl saline solution, with peristaltic pump 2 by saline solution at the uniform velocity
In injection ph regulating reservoir 3, continue 35min.Weighing in a certain amount of charcoal addition ph regulating reservoir (controls charcoal molten after mixing
Liquid initial absorbance is 0.7 about, and conversion concentration is about 0.4g/l), adjust charcoal saline solution ph to 6 with ph buffer, then
By peristaltic pump 2, charcoal solution is injected in Simulated soil columns 6 with 0.5ml/min, continue 70min.Then use peristaltic pump 2 by phase
At the uniform velocity inject from former pond 1 in ph regulating reservoir 3 with saline solution, adjust charcoal saline solution ph to 6 with ph buffer, then with compacted
Dynamic pump 2 injects, with the flow velocity of 0.5ml/min, the elution experiments carrying out charcoal granule in Simulated soil columns, continues 120min.Experiment
During every 2min collect a water outlet water sample, determine the concentration of organism in water charcoal granule.After continuous stream experiment end of run,
Quartz sand in Simulated soil columns 6 is highly averagely divided into 5 parts by 2cm, is washed with deionized mensure absorption in quartz sand
Charcoal amount.As depicted in figs. 1 and 2, MaterialBalance Computation result shows that this invention device charcoal reclaims to experimental result
Rate is more than 75% it was demonstrated that this device can be used to study motion migration in soil filled media for the charcoal and deposition release.
Solution is at the uniform velocity injected ph with peristaltic pump 2 and adjusts by embodiment 3: in former pond, raw water is the saline solution of 1mmol/lnacl
In section pond, adjust ph to 4,6,9 with ph buffer, experimental procedure is with embodiment 2.Experimental result is as shown in Figures 2 and 3.
Claims (8)
1. a kind of charcoal move in soil system migration analog it is characterised in that: include former pond, water pump, ph
Regulating reservoir, agitating device, Simulated soil columns and automatic fraction collector, wherein:
Described former pond includes solution injection bottle and conduit；Described ph regulating reservoir includes ph electrode, ph meter, charcoal granule, institute
State in ph electrode insertion ph regulating reservoir, and ph electrode is connected with ph meter；Described agitating device includes magneton, and described magneton is located at and stirs
Mix in device, above described agitating device, place charcoal；Described Simulated soil columns are column shape container, be filled with filling and be situated between in it
Matter, the upper and lower ends of column shape container are provided with ring flange, and top is provided with venthole, the built-in silicagel pad of upper and lower ends ring flange,
Place porous filter plate at the upper and lower position of filled media respectively；Described automatic fraction collector include outlet pipe, timing rotating disk and
Eluate collection container；Described charcoal granule is the charcoal granule of 300-400 mesh；Described Simulated soil columns material adopts organic glass
Glass, high 10cm, internal diameter 1.2cm；Described filled media is the quartz sand of 20-30 mesh；The ph value controlling ph regulating reservoir is 6 or 9；
The water inlet of described ph regulating reservoir is connected with the outlet of former pond by water pump, and the water inlet of agitating device passes through water pump
It is connected with the outlet of ph regulating reservoir, the water inlet of Simulated soil columns is connected with the outlet of agitating device by peristaltic pump, simulation
The outlet of earth pillar is connected with automatic fraction collector by water pump.
2. a kind of charcoal according to claim 1 move in soil system migration analog it is characterised in that:
Described solution injection bottle is provided with two, respectively deionized water injection bottle, high concentration salt solutions injection bottle；Wherein deionized water
Injection bottle is connected with the bottom of former pond by water pump, and high concentration salt solutions inject the top phase that bottle passes through water pump and former pond
Even.
3. a kind of charcoal according to claim 1 and 2 moves the analog of migration in soil system, and its feature exists
In: described solution injection bottle is geneva bottle.
4. a kind of charcoal according to claim 2 move in soil system migration analog it is characterised in that:
Described ph regulating reservoir is placed in advance in the charcoal granule of 300-400 mesh being sieving through, and is then injected into the saline solution of former pond, glass
After excellent hand operated mixing, it is finally putting into ph electrode regulating solution ph.
5. a kind of charcoal according to claim 1 move in soil system migration analog it is characterised in that:
In described agitating device, magneton is constantly in the state of constant speed stirring it is ensured that charcoal even particulate dispersion is in molten in whole process
In liquid.
6. a kind of charcoal according to claim 1 move in soil system migration analog it is characterised in that:
Described Simulated soil columns place porous filter plate, for ensureing being uniformly distributed in whole cross section of Inlet and outlet water；Control Simulated soil columns
Water inlet and outlet flow velocity are 0.5ml/min.
7. a kind of charcoal according to claim 1 move in soil system migration analog it is characterised in that:
The timing rotating disk of described automatic fraction collector is to rotate once every 2min；Eluate collection container is 100 5ml test tubes.
8. a kind of charcoal according to claim 1 move in soil system migration analog it is characterised in that:
Described water pump is passage digital display peristaltic pump.
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| CN201410721416.2A CN104535716B (en) | 2014-12-03 | 2014-12-03 | Device for simulating motion transfer of charcoal in soil system |
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| CN201410721416.2A CN104535716B (en) | 2014-12-03 | 2014-12-03 | Device for simulating motion transfer of charcoal in soil system |
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| CN105259234B (en) * | 2015-11-06 | 2017-09-19 | 江西农业大学 | Sensing electrode preparation method based on pond pine charcoal |
| CN106018693B (en) * | 2016-05-30 | 2018-01-19 | 中国科学院地理科学与资源研究所 | A kind of method analyzed charcoal and be applicable the crop growth stage |
| CN109092879A (en) * | 2018-07-18 | 2018-12-28 | 东华大学 | A kind of simulator improving methane emission reduction in landfill yard earthing using charcoal |
| CN110967279A (en) * | 2018-09-29 | 2020-04-07 | 天津大学 | Experimental device and experimental method for simulating migration and transformation behaviors of pollutants in near seawater-sediments and application of experimental device and experimental method |
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| CN102721799B (en) * | 2012-06-15 | 2015-11-25 | 安徽理工大学 | A kind of column simulation experimental provision for reclaimed minesoils and flyash substrate |
| CN103837449B (en) * | 2014-01-13 | 2016-08-17 | 华东理工大学 | Volatile organic contaminant Transport And Transformation analog and application in subsoil water |
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