CN104237080B - Closed underground water solute migration simulation experimental device - Google Patents
Closed underground water solute migration simulation experimental device Download PDFInfo
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- CN104237080B CN104237080B CN201410432121.3A CN201410432121A CN104237080B CN 104237080 B CN104237080 B CN 104237080B CN 201410432121 A CN201410432121 A CN 201410432121A CN 104237080 B CN104237080 B CN 104237080B
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Abstract
The invention discloses a closed underground water solute migration simulation experimental device which comprises a liquid supply unit, a parallel experimental unit, a liquid waste recovery unit, a closed combined cabinet and a waste gas recovery unit, wherein the liquid supply unit provides a solution for the parallel experimental unit, and the flow of effluent or a water head can be controlled; the parallel experimental unit is used for an underground water solute migration simulation parallel experiment, and the experimental solute migration process is monitored through sampling; and the liquid waste recovery unit is used for recovering wastewater generated by the experiment. A closed space is formed by the closed combined cabinet, toxic volatile polluted solute gas is prevented from diffusing, the waste gas recovery unit is used for collecting volatile solutes in the experimental process, and atmospheric pollution is avoided. The experimental device disclosed by the invention is suitable for a simulation experiment of volatile or semi-volatile polluted solutes and has the characteristics of sustainability and high stability. Meanwhile, the experimental equipment is simplified, the experimental cost is saved, and the uniformity of the water head or flow conditions during the parallel experiment is guaranteed, so that comparative analysis of the parallel experiment results is facilitated.
Description
Technical field
The invention belongs to environmental engineering and agricultural engineering field, relate to a kind of sealed underground water-soluble matter Migration Simulation experimental provision particularly, be applicable to soil column leaching in underground water solute migration simulating chamber, can be used for volatility or the simulated experiment of half volatile pollution solute migration.
Background technology
Groundwater environment is relatively fragile, once pollution effect is serious, and the duration is long, difficulty of governance is large, especially all kinds of soluble pollutants (solute) is constantly moved with underground water, decays, adsorbs, resolves and is reacted to each other, and brings very large difficulty to underground water pollution control.Accurate assurance pollutes solute with the travel motion rule of underground water, all has very important significance to underground Water Environmental Pollution Control and Groundwater Resource Management.
At present, the main method of underground water solute migration research comprises water pumping experiment, Particle-beam Tracing experiment, numerical simulation and physical model experiment etc.Water pumping experiment for groundwater contamination Relatively centralized and the larger water-bearing zone of perviousness, extracts pollutant out floor treatment by groundwater abstraction, and arranges inspection well and carry out the transport conditions of monitoring pollution thing with ground water field.Water pumping experiment needs to carry out on existing contaminated site, is mainly used in underground water pollution control project, easily by the restriction of the conditions such as place, experiment condition and hydrogeology.Particle-beam Tracing experiment injects tracer agent in underground water, and to be shifted one's love condition with underground water transport by monitoring tracer agent particle, the characteristics of motion of solute with ground water field is polluted in research.Particle-beam Tracing experiment affects comparatively large by hydrogeological condition, and tracer agent price is relatively high, easily causes secondary pollution.Numerical simulation has efficient, convenient and visual advantage, therefore one of the main method of underground water solute migration research (Wei Heng is become, Xiao Hong wave. underground water solute migration modeling effort progress [J]. dirt band, 2013,06): 1582-1589), but the acquisition of the checking of numerical simulation result and calculating parameter needs to realize by field experiment or physical model experiment, and in solute migration process, a lot of chemical reaction and physical process do not have ready-made mathematical model to describe yet.Physical model experiment sets up the method for indoor model simulated field scale physical phenomenon or process, has advantage that is more directly perceived, convenient and operability, therefore also become one of requisite research means of underground water solute migration.Existing solute migration physical model experiment is mainly based on one dimension soil column leaching (Xinjiang Inst. of Ecology and Geography, Chinese Academy of Sciences, Beijing Ucsensor Technology Co., Ltd., a kind of soil solute migration simulation device for laboratory, CN201867407U [P/OL] .2011-06-15; Hohai University, a kind of simulator for transport of soil pollutant, CN103424341A [P/OL] .2013-12-04; Northeast Agricultural University, a kind of reaction unit of simulated soil organic pollutants, CN103760319A [P/OL] .2014-04-30), experimental provision mainly comprises feed flow part, experiment earth pillar and waste liquid recovery apparatus three parts, wherein feed flow part provides water source or pollution source, experiment earth pillar is the main carriers of solute migration process, and waste collecting device is for collecting excessive waste liquid and waste water.These experimental provisions are mostly for specific pollution solute design, and structure is simple and universality is not high, owing to lacking airtight protective device, cannot be applied to some volatility or half volatile toxic contaminants solute.
Summary of the invention
Goal of the invention: for solving problems of the prior art, the invention provides a kind of sealed underground water-soluble matter Migration Simulation experimental provision, can be used for the experiment of underground water solute migration indoor soil-column, be applicable to the simulated experiment of volatility or half volatile pollution solute, there is sustainable and feature that is good stability, simplify experimental facilities simultaneously, saved experimental cost, when ensureing parallel laboratory test, the unitarity of head or flow condition is conducive to the comparative analysis of parallel laboratory test result simultaneously.
Technical scheme: for realizing above-mentioned technical purpose, the present invention proposes a kind of sealed underground water-soluble matter Migration Simulation experimental provision, comprise liquid-supply unit, parallel laboratory test unit, devil liquor recovery unit, closed composition cabinet and waste heat recovery unit, described liquid-supply unit, parallel laboratory test unit are connected successively with devil liquor recovery unit and are arranged at the inside of described closed composition cabinet, described closed composition cabinet is connected with described waste heat recovery unit, wherein:
Described liquid-supply unit comprises filter gas cylinder, supplying bottle, feed flow isocon and one group of flow controller, and described filter gas cylinder is connected with described supplying bottle by wireway; Described supplying bottle is connected with feed flow isocon; Described feed flow isocon and flow controller are connected;
Described parallel laboratory test unit comprises experiment earth pillar, plexiglass box and sampling plug, described experiment earth pillar is filled in described plexiglass box, the surface of described plexiglass box is located at by described sampling plug, and inner through plexiglass box sidewall loading test earth pillar; Wherein, the number of the experiment earth pillar of parallel laboratory test unit can regulate as required, and a point number for feed flow isocon also can regulate as required, thus realizes the separating liquid from supplying bottle in each experiment earth pillar of parallel laboratory test unit.
Described closed composition cabinet comprises a closed shell, and the inside of described shell is separated into for liquid chamber, analog sample room and three, waste liquid locker room part, is respectively used to place liquid-supply unit, parallel laboratory test unit and devil liquor recovery unit; Wherein, the described inside for liquid chamber is provided with height, the dismountable lifting platform for adjusting supplying bottle.
Described waste heat recovery unit comprises vent fan and activated charcoal, and described activated charcoal one end is connected with described vent fan, and the other end is connected with exhaust outlet; Described vent fan is connected with the outer wall of described closed composition cabinet.Wherein vent fan effect is extracted out by the air in closed composition cabinet, and activated charcoal is used for the solute molecule scattered in absorbed air, and the air after process is discharged in air through exhaust outlet.
Particularly, upward, bottleneck is provided with the first rubber stopper to the bottleneck of described filter gas cylinder, embeds the first draft tube and escape pipe in described first rubber stopper, and the entrance of described first draft tube is connected with activated charcoal bag, and the bottom of filter gas cylinder is stretched in outlet.Described activated charcoal bag, for removing the impurity in air, injects certain density solution (during solution non-volatility, available water replaces) for controlling the vapor liquid equilibrium of volatility organic solute in filter gas cylinder.
The number of described supplying bottle is two, and down, bottleneck is provided with the second rubber stopper to each supplying bottle bottleneck, embeds the second draft tube and drain pipe in described second rubber stopper; The bottle basal surface of described supplying bottle arranges liquid supplementation pipe and snorkel, and described liquid supplementation pipe extends to the position of bottleneck of supplying bottle, and described snorkel is close at the bottom of the bottle of supplying bottle; Described liquid supplementation pipe is connected with the first tongs; The entrance of each second draft tube is connected with the gas outlet of wireway respectively, check (non-return) valve is respectively arranged with between the second draft tube and the gas outlet of wireway, anti-sealing or solution flow backwards, the air intake opening of described wireway is connected with the escape pipe of filter gas cylinder, and the upper end port height of the air intake opening of described wireway is higher than the height of supplying bottle.Liquid supplementation pipe and snorkel are vented when being respectively used to make-up solution and make-up solution, and after solution supplements, liquid supplementation pipe and snorkel are closed by the first tongs.Supplying bottle is made according to geneva bottle principle, and for providing water needed for experiment or solution, outlet maintains constant head h, and wherein h is the difference in height in supplying bottle between draft tube upper port and drain pipe upper port.Two supplying bottle alternations, can ensure the sustainability of the low-permeability soil body or low discharge breakthrough experiment.Solution from supplying bottle is entered by the water inlet of feed flow isocon, is then diverted in each flow controller by the water delivering orifice of feed flow isocon.
Described flow controller comprise connecting pipe, for observe dropping liquid state flow windows, for regulating droplet counter and the flowrate control valve of liquid droping speed, wherein, the upper end of described connecting pipe is connected with the water delivering orifice of feed flow isocon, lower end is connected with the water inlet of plexiglass box, described flow windows is opened in the top of described connecting pipe, and described droplet counter is nested in the outside of flow windows; Described flowrate control valve is arranged at the bottom of described connecting pipe.Flow controller is for controlling the flow of feed flow.When flowrate control valve is opened completely, whole liquid-supplying system is with constant head feed flow, and adjust flux operation valve controlling dropping liquid speed (being observed by flow windows), wherein liquid droping speed is measured by droplet counter.The adjustment of supplying bottle height and flow controller are combined and can meet different flow requirement of experiment.
Described experiment earth pillar comprises protective seam, dielectric layer and bed course from top to bottom successively, and the aspect ratio of protective seam, dielectric layer and bed course is 1:(1.5 ~ 3): (1 ~ 2); Wherein, described protective seam is coarse particle sandy gravel, destroys from water pressure mainly for the protection of dielectric layer; Described dielectric layer is the transmission medium of underground water solute migration, can be to have the soil body (such as Leaching Experiments) of certain pollutant levels or pollutant initial concentration is the soil body of zero; Described bed course is filled with the sandy gravel from coarse to fine of particle diameter from bottom to top.
Further, three layers of sandy gravel are filled in described bed course, packed height is followed successively by 1/2,3/8 and 1/8 of bed course height from bottom to top, wherein, particle diameter is from coarse to fine from bottom to top for three layers of sandy gravel, the mean grain size difference of adjacent layer at 2 ~ 3 times, Main Function be water inlet is concentrated become a mandarin discrete for equal uniform flow; And the mean grain size of the sandy gravel of the superiors is 2 ~ 3 times of the mean grain size of dielectric layer medium, to ensure that simulated experiment is not subject to the impact of bed course Penetration Signature and each layer sandy gravel and media particle seepage do not occur.
Described plexiglass box is plexi-glass tubular, described plexi-glass tubular comprises joint, middle joint and lower joint three part, wherein the aspect ratio of upper joint, middle joint and lower joint three part is 1:(1.5 ~ 3): (1 ~ 2), corresponding with the height of the protective seam of experiment earth pillar, dielectric layer and bed course respectively; Be fixed by plexiglass flange and bolt between the adjacent part of described plexi-glass tubular; Between plexiglass flange, be provided with waterstop pad, be provided with a row sample tap in the outside of plexi-glass tubular, described sample tap matches with sampling plug; The bottom of described plexi-glass tubular is provided with water inlet, and described water inlet is connected with flow controller; The top of described plexi-glass tubular sets out the mouth of a river, and described water delivering orifice is connected with devil liquor recovery unit; Described sampling plug comprises and connects screen casing, threaded line pipe and sample cock successively, the dielectric layer of wherein said screen casing loading test earth pillar; Described threaded line pipe is threaded with the sample tap of described plexi-glass tubular, for fixing sampling plug.Sample cock is exposed outside plexiglass box, opens valve microscale sampler and samples, valve-off when not sampling during sampling.
The number of sample tap is 3 ~ 8, and wherein, a sample tap is arranged at the bottom of the upper joint of described plexi-glass tubular, and a sample tap is arranged at the top of the lower joint of described plexi-glass tubular, and remaining sample tap is arranged at the middle joint of described plexi-glass tubular equably.
Described devil liquor recovery unit comprises waste collection pipe, segregation of waste pipe and at least one devil liquor recovery bottle, the head piece that enters of described waste collection pipe is connected with the water delivering orifice of experiment earth pillar, described waste collection pipe to go out head piece downward-sloping and be connected with segregation of waste pipe, arrange slightly downwards by head piece will be gone out, be flowed to this after being convenient to waste collection and go out head piece, then be assigned to two devil liquor recovery bottles by segregation of waste pipe.Described segregation of waste pipe is connected with devil liquor recovery bottle respectively; Each devil liquor recovery bottle bottleneck is upwards placed, and bottleneck is provided with rubber stopper shutoff, and rubber stopper is embedded in water inlet pipe and escape pipe; The water inlet pipe of devil liquor recovery bottle is connected with segregation of waste pipe.After waste liquid flows into devil liquor recovery bottle, in bottle, gas is discharged by escape pipe, is finally inhaled into the waste gas recovering device of closed protective system.The number of devil liquor recovery bottle is two, and two devil liquor recovery bottles are used alternatingly, and can ensure the sustainability of long-term experiment.
The described front for liquid chamber, analog sample room and waste liquid locker room all arranges glass door, facilitates experimental observation (if there is lucifuge requirement, can paste photomask on glass door); Described lifting platform is fixed on the sidewall for liquid chamber by detachable gim peg, and the bottom of lifting platform is respectively arranged with the first hanger bar, more than lifting platform is solution storage space, places filter gas cylinder and supplying bottle; Be experimental observation window below lifting platform, deposit feed flow isocon, flow windows and droplet counter, be suspended on bottom lifting platform by the first hanger bar; Top for liquid chamber arranges two fluid infusion holes passed for the draft tube of supplying bottle, the surface of described lifting platform arranges three intercommunicating pores, wherein the size of two intercommunicating pores and the bottleneck size of supplying bottle corresponding, the size of another intercommunicating pore is corresponding with the size of wireway.From left and right, two macropores pass two supplying bottle bottlenecks, and wireway passes from the aperture of centre, facilitates equipment connection.Fluid infusion hole and intercommunicating pore are conducive to the circulation of feed flow room air, facilitate gas sampling.
Described analog sample room is positioned at for below liquid chamber, and be interconnected with for liquid chamber, the middle part of described analog sample room is provided with crossbeam; The below of described crossbeam is provided with two for hanging the second hanger bar of waste collection pipe, wherein, be greater than the length of the second hanger bar of opposite side near the length going out the second hanger bar of head piece side of waste collection pipe, to go out head piece slightly downward-sloping for waste collection pipe thus, facilitates waste liquid to conflux; Parallel laboratory test carrying platform is set apart from 10 ~ 12cm place, bottom of described analog sample room, is built by two L-type angle steel, for placing the experiment earth pillar of parallel laboratory test; Described waste liquid locker room is positioned at the right side of analog sample room and is interconnected with analog sample room, is provided with support frame between waste liquid locker room and analog sample room; The top of described waste liquid locker room establishes two for hanging the 3rd hanger bar of segregation of waste pipe.
Liquid-supply unit provides solution (or water) for parallel experiment unit, can control flow or the head of fluid; Parallel laboratory test unit is used for underground water solute migration simulation parallel laboratory test, and experiment solute migration process passes through sampling monitoring; Devil liquor recovery unit is used for the waste water that recovery experiment produces.Closed composition group becomes confined space, and prevent toxic volatile from polluting solute gas diffusion, waste gas recovering device, for collecting the solute volatilized in experimentation, avoids atmosphere pollution.
When applying said apparatus, concrete operation steps is as follows:
(1) experiment material preparation:
First, according to operation standard preparation experiment solution, until solute and water fully miscible after, be filled into (keeping this supplying bottle drain pipe to close) in one of them supplying bottle, close this supplying bottle snorkel, stand-by; Secondly, load portions of de-ionized water by another supplying bottle, close this supplying bottle snorkel, after being discharged by air in flow controller, close all flowrate control valves, stand-by; 3rd, the experiment soil body is seated in plexiglass box middle node according to certain packing layering stand-by, wherein the upper and lower surface of the soil body flushes with the upper and lower flange surface of middle node respectively, imbeds sampling plug and keeps sampling plug valve closing, tightened by nut and prevent from leaking in filling process; 4th, three kinds of different-grain diameter sandy gravel pure water are cleaned, puts respectively and soak stand-by with deionized water in a reservoir; 5th, experimentally soil body penetration characteristic, calculating simulation empirical flow, sample time and experiment end time, planning sampling Sample storage and testing process.Solution, earth pillar preparation method can experimentally need to adjust.
(2) assembling experiment earth pillar:
First, the bottom joint of assembling plexiglass box, water inlet is closed with tongs, the deionized water of this joint height 1/3 is injected in the plexi-glass tubular of a bottom joint, with order from coarse to fine, sandy gravel is loaded in organic glass post, loading height is followed successively by 1/2,3/8 and 1/8 of this joint height, mat surface height flushes with descending most the upper flange surface of joint organic glass post, and spread a circular filter screen (diameter is consistent with organic glass bore), prevent particle to bleed bed course; Secondly, dock middle node and a bottom joint, the middle node of plexiglass box and topmost one save, centre adds waterstop pad and prevents from leaking with bolt tightening; 3rd, filling protective seam in plexiglass box topmost a joint, based in, fine grain sandy gravel, add top cover and waterstop pad, prevent from leaking with bolt tightening; Finally, each experiment earth pillar is placed on parallel laboratory test carrying platform, docking plexiglass box water inlet and flow controller water delivering orifice, docking plexiglass box water delivering orifice and waste collection water inlet tube mouth, open flowrate control valve, keep comparatively low discharge to supply water, allow deionized water slowly immerse the experiment soil body, until all plexiglass box water delivering orifices there are flowing out.
(3) regulate for flow quantity
Supply water as constant head need be kept, then flowrate control valve is reached maximum, water delivering orifice upper end in hoistable platform to supplying bottle is regulated to be Δ h to plexiglass box water inlet height, liquid-supplying system finally provides solution to maintain constant head h+ Δ h, and wherein h is the difference in height in supplying bottle between draft tube upper port and rising pipe upper port.
If need to maintain constant rate to supply water, then need adjust flux operation valve, by supplying drop numerical control flow in the observed volume form unit interval, concrete operation step is: open droplet counter, after registration is stable, observe solution drip fast speed; Adjust flux operation valve, until solution drips speed meet requirement of experiment, closes droplet counter after maintaining steady state value in 60 seconds; Open droplet counter every 5 minutes, detect solution and drip speed, adjust flux operation valve, until continuous three monitorings are dripped fast constant, then meet requirement of experiment for flow quantity.
As flowrate control valve reach maximum after, for flow quantity still lower than experiment requirements, then need to improve hoistable platform or to increase in supplying bottle rising pipe port height difference (two supplying bottles regulate simultaneously) in draft tube port to bottle.
(4) experiment is started
Close the water delivering orifice that deionized water supplying bottle is housed, open the supplying bottle water delivering orifice that solution is housed, close all glass doors, open exhaust fan, start experiment.
(5) make-up solution, process waste water
Experimentation possibility last very long, therefore needs make-up solution and process experiment wastewater in experimentation.Two supplying bottles of Setup Experiments can be used alternatingly, and ensure the continuation of feed flow, and two waste liquid holding bottles are used alternatingly and can constantly receive and store experimental waste liquid, ensure the sustainability of whole experimentation.
During make-up solution, keep this supplying bottle water delivering orifice to close, open this bottle of snorkel, utilize water inlet pipe by deionized water sucking-off in supplying bottle according to siphon principle or solution is injected supplying bottle.According to different experiments solution and detection product, need by working specification process experimental waste liquid.
(6) experiment is terminated, cleaning experiment device
After experiment completes, by solution sucking-off in supplying bottle, according to working specification process experimental waste liquid, discarded object and cleaning experiment device.
Beneficial effect: compared with prior art, tool of the present invention has the following advantages:
(1) by adding closed protective unit, can be applicable to the underground water solute migration experimental simulation of volatility or half volatile organic solute, Protection person can encroach on from volatility toxic gas, can waste gas be collected simultaneously, avoid atmospheric pollution;
(2) by arranging activated charcoal bag and filter gas cylinder, namely can remove the impurity in air, be conducive to again controlling volatility organic solute and volatilize the vapor liquid equilibrium caused, reduction volatility is on the impact of feed flow solute concentration;
(3) by arranging lifting platform and flow controller, accurate Control release flow or head, ensure the stability of experiment condition;
(4) by arranging two supplying bottles and two waste liquid buckets, can while experiment make-up solution and disposing waste liquid, ensure sustainability and the stability of long-term experiment;
(5) solution shunt is passed through, same set of liquid-supply unit is applied to different experiments earth pillar, constant head or flow condition are applied to parallel laboratory test, namely experimental facilities is simplified, save experimental cost, when can ensure again parallel laboratory test, the unitarity of head or flow condition, is conducive to the comparative analysis of parallel laboratory test result;
(6) can be used for underground water solute migration and simulate parallel soil column leaching, be applicable to the Leaching Experiments etc. of the solute migration simulated experiment with pollution source, the soil body.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of sealed underground of the present invention water-soluble matter Migration Simulation experimental provision;
Fig. 2 a is the structural representation of liquid-supply unit;
Fig. 2 b ~ 2f respectively is the structural representation of the filter gas cylinder of liquid-supply unit, wireway, supplying bottle, feed flow isocon and flow controller;
Fig. 3 a is the structural representation of parallel laboratory test unit;
Fig. 3 b ~ 3d respectively is the structural representation of the experiment earth pillar of parallel laboratory test unit, plexi-glass tubular and sampling plug;
Fig. 4 a is the structural representation of devil liquor recovery unit;
Fig. 4 b is the structural representation of waste collection pipe;
Fig. 4 c is the structural representation of devil liquor recovery bottle;
Fig. 5 a and Fig. 5 b is the structural representation of closed composition cabinet of the present invention;
Fig. 6 is the structural representation of waste gas recovering device of the present invention;
Fig. 7 is that parallel laboratory test 1,2, No. 3 post A sample tap 1,2-dichloro-benzenes concentration are schemed over time, and wherein, 1A represents No. 1 post A sample tap end value, and 2A represents No. 2 post A sample tap end values, and 3A represents No. 3 post A sample tap end values;
Fig. 8 is parallel laboratory test 1,2, No. 3 post B sample tap 1,2-dichloro-benzenes concentration changes with time figure, and wherein, 1B represents No. 1 post B sample tap end value, and 2B represents No. 2 post B sample tap end values, and 3B represents No. 3 post B sample tap end values;
Fig. 9 is Soil Desalting experiment sampling inspection results.
Embodiment
A kind of sealed underground water-soluble matter Migration Simulation experimental provision (as shown in Figure 1), mainly comprise liquid-supply unit (as shown in Fig. 2 a ~ Fig. 2 f), parallel laboratory test unit (as shown in Fig. 3 a ~ Fig. 3 d), devil liquor recovery unit (as shown in Figure 4 a ~ 4c), closed composition cabinet (as shown in Fig. 5 a, Fig. 5 b) and waste gas recovering device (as shown in Figure 6), wherein liquid-supply unit is mainly used in, for parallel laboratory test unit provides solution (or water), can controlling flow or the head of fluid; Parallel laboratory test unit is used for underground water solute migration simulation parallel laboratory test, and experiment solute migration process passes through sampling monitoring; Devil liquor recovery unit is used for the waste water that recovery experiment produces.Closed composition group becomes confined space, and prevent toxic volatile from polluting solute gas diffusion, waste gas recovering device, for collecting the solute volatilized in experimentation, avoids atmosphere pollution.
As shown in Figure 2 a, liquid-supply unit is made up of filter gas cylinder 1-1, wireway 1-2, two supplying bottle 1-3, feed flow isocon 1-4 and a group of flow controller 1-5.Filter gas cylinder 1-1 (as shown in Figure 2 b) is made by plexi-glass tubular (Φ 220 × 10), height 20cm, bottleneck upwards, seal with the first rubber stopper 1-1-1, embed the first draft tube 1-1-2 (Φ 5 × 1) and escape pipe 1-1-3 (Φ 5 × 1) in first rubber stopper 1-1-1, the first draft tube 1-1-2 entrance meets activated charcoal bag 1-1-4 for removing the impurity in air.Certain density solution is injected, for controlling the vapor liquid equilibrium of volatility organic solute in filter gas cylinder 1-1.Wireway 1-2 (as shown in Figure 2 c) adopts plexi-glass tubular (Φ 5 × 1) to be welded, wireway air intake opening 1-2-1 is connected with the escape pipe 1-1-3 of filter gas cylinder 1-1, port height is higher than supplying bottle 1-3, wireway gas outlet 1-2-2 is connected with the draft tube 1-3-2 of supplying bottle 1-3, and centre arranges the anti-sealing of check (non-return) valve 1-2-3 or solution flows backwards.Supplying bottle 1-3 is made by plexi-glass tubular (Φ 220 × 10), height 40cm, bottleneck is downward, seal with the second rubber stopper 1-3-1, in the second rubber stopper 1-3-1, embed organic glass draft tube 1-3-2 (Φ 5 × 1) and drain pipe 1-3-3 (Φ 20 × 2.5).The bottle end, arranges organic glass liquid supplementation pipe 1-3-4 (Φ 20 × 2.5) and snorkel 1-3-5 (Φ 5 × 1), liquid supplementation pipe 1-3-4 length extends to bottleneck, at the bottom of snorkel 1-3-5 is close to bottle (in bottle, length is zero), be vented when being respectively used to make-up solution and make-up solution, after solution supplements, liquid supplementation pipe 1-3-4 and snorkel 1-3-5 closes with the first tongs 1-3-6.Feed flow isocon 1-4 (as shown in Figure 2 e) is made by plexi-glass tubular (Φ 32 × 2), horizontal positioned, comprise water inlet 1-4-1 and water delivering orifice 1-4-3, water inlet 1-4-1 is connected with the drain pipe 1-3-3 of supplying bottle 1-3, establish water check valve 1-4-2 between the drain pipe 1-3-3 of water inlet 1-4-1 and supplying bottle 1-3, water delivering orifice 1-4-3 is connected with flow controller 1-5 (as shown in figure 2f).Flow controller 1-5 is converted by precisive infusion device, comprise connecting pipe 1-5-1, flow windows 1-5-2, droplet counter 1-5-3 and flowrate control valve 1-5-4 tetra-parts, wherein connecting pipe 1-5-1, flow windows 1-5-2 and flowrate control valve 1-5-3 are the intrinsic parts of essence amount transfusion device, and droplet counter 1-5-3 adopts infrared electro sense counter (caring about 001 type).
Parallel laboratory test unit (as shown in Figure 3 a) is made up of many groups experiment earth pillar 2-1 (as shown in Figure 3 b), plexiglass box 2-2 (as shown in Figure 3 c) and sampling plug 2-3 (as shown in Figure 3 d).Experiment earth pillar 2-1 (diameter 10cm) is followed successively by protective seam 2-1-1, dielectric layer 2-1-2 and bed course 2-1-3 from top to bottom, wherein protective seam 2-1-1 height 20cm, fill coarse particle sandy gravel, particle size range 0.5 ~ 2.0cm, destroys from water pressure mainly for the protection of dielectric layer; Dielectric layer 2-1-2 height 30cm, filling the experiment soil body, is the transmission medium of underground water solute migration; Bed course 2-1-3 height 20cm, fill gradient-thickness sandy gravel, particle from the coarse to fine from bottom to top, and particle size range is respectively 2.0 ~ 3.0mm, 0.5 ~ 2.0mm and 0.05 ~ 0.5mm, packed height is respectively 10cm, 8cm and 2cm, Main Function be water inlet is concentrated become a mandarin discrete for equal uniform flow.Plexiglass box 2-2 is plexi-glass tubular 2-2-1 (Φ 110 × 5; highly be respectively 20cm, 30cm and 20cm); comprise joint, middle joint and lower joint three part, be respectively used to protective seam 2-1-1, the dielectric layer 2-1-2 and the bed course 2-1-3 that hold experiment earth pillar from top to bottom.Often save plexi-glass tubular 2-2-1 two ends and a slice plexiglass flange 2-2-2 (thickness 10mm is set respectively, outward flange diameter 160mm, diameter of bore 100mm) convenient docking, add silica gel waterstop pad 2-2-4 in the middle of the adjacent part of plexi-glass tubular 2-2-1 to prevent from leaking, docking mode is that bolt is fixed.Plexi-glass tubular 2-2-1 sidewall arranges five sample tap 2-2-5 (diameter 8mm), dock with sampling plug 2-3, wherein three are positioned at middle node plexiglass box, equally arrange (spacing 7.5cm), other two lay respectively at upper and lower two joint plexiglass box, and position is near middle node plexiglass box.Sampling plug 2-3 is welded by screen casing 2-3-1 (Φ 5 × 1), threaded line pipe 2-3-2 (Φ 8 × 1.5) and sample cock 2-3-3, wherein gather sieve aperture (diameter 2mm) wrap up filter screen on screen casing 2-3-1 surface, threaded line pipe 2-3-2 is docked by screw thread with sample tap 2-2-5, and sample cock 2-3-3 is exposed outside plexi-glass tubular.Establish water inlet 2-2-6 to be connected with flow controller 1-5 bottom plexiglass box, top sets out mouth of a river 2-2-7 and is connected with devil liquor recovery unit 3.
Devil liquor recovery unit 3 (as shown in fig. 4 a) is made up of a waste collection pipe 3-1 (as shown in Figure 4 b), a segregation of waste pipe 3-2 and two devil liquor recovery bottle 3-3 (as illustrated in fig. 4 c).Waste collection pipe 3-1 adopts plexi-glass tubular (Φ 32 × 2) to be made, it enters head piece and is connected with the water delivering orifice of experiment earth pillar 2-1, the head piece 3-1-2 that goes out of waste collection pipe 3-1 docks with segregation of waste pipe 3-2, go out head piece 3-1-2 slightly downward-sloping, be flowed to this after being convenient to waste collection and go out head piece 3-1-2.Segregation of waste pipe 3-2 adopts plexi-glass tubular (Φ 32 × 2) to be made, horizontal positioned, and effect is that the segregation of waste that confluxed by waste collection pipe 3-1 is to two devil liquor recovery bottle 3-3.Devil liquor recovery bottle 3-3 is converted by scuttlebutt (18.9L), and bottleneck is upwards placed, with rubber stopper 3-3-1 shutoff.Rubber stopper 3-3-1 is embedded in organic glass water inlet pipe 3-3-2 (Φ 20 × 2.5) and escape pipe 3-3-3 (Φ 5 × 1), wherein water inlet pipe 3-3-2 is connected with segregation of waste pipe 3-2, after waste liquid flows into devil liquor recovery bottle, in bottle, gas is discharged by escape pipe 3-3-3, is finally inhaled into waste heat recovery unit 5.
Closed composition cabinet 4 (as shown in Figure 5 a) adopts wooden structures, adds the form combination of shell, convenient processing with keel.4 one-tenth, closed composition cabinet is for liquid chamber 4-1, analog sample room 4-2 and waste liquid locker room 4-3 tri-parts, wherein be positioned at above the 4-2 of analog sample room for liquid chamber 4-1, waste liquid locker room 4-3 is positioned on the right side of the 4-2 of analog sample room, and three rooms are interconnected, every room arranges two fan glass doors, convenient observation.For wide, the high each 1m of liquid chamber 4-1, thickness 0.4m, lifting platform 4-1-1 is established in centre, is fixed on skeleton by detachable gim peg 4-1-2, for regulating supplying bottle height.The bottom of lifting platform 4-1-1 is respectively arranged with the first hanger bar 4-1-3, places filter gas cylinder 1-1 and supplying bottle 1-3, underhung feed flow isocon 1-4 and flow controller 1-5 above lifting platform 4-1-1.Arrange two fluid infusion hole 4-1-4 (diameter 25mm) for liquid chamber 4-1 top, the liquid supplementation pipe of supplying bottle passes thus, is conveniently two supplying bottle make-up solution.Lifting platform 4-1-1 arranges three intercommunicating pore 4-1-5, facilitates equipment connection, wherein two supplying bottle bottlenecks from left and right two macropores (diameter 10cm) pass, wireway passes from the aperture (diameter 3cm) of centre.Fluid infusion hole 4-1-4 and intercommunicating pore 4-1-5 is conducive to the circulation of feed flow room air simultaneously, facilitates gas sampling.Analog sample room 4-2 is simulated experiment and the sampler space, wide 1m, high 0.8m, thickness 0.4m, be interconnected with for liquid chamber 4-1, crossbeam 4-2-1 is established in centre, two are arranged for hanging the dry 4-4-4 of the second suspension of waste collection pipe 3-1 below crossbeam 4-2-1, wherein, the length going out the second hanger bar 4-2-2 of head piece 3-1-2 side near waste collection pipe 3-1 is greater than the length of the second hanger bar 4-2-2 of opposite side, distance 10cm place, bottom arranges parallel laboratory test carrying platform 4-2-3, is built, for placing the experiment earth pillar of parallel laboratory test by two L-type angle steel.Waste liquid locker room 4-3 holds devil liquor recovery unit, and wide 1m, high 0.8m, thickness 0.4m, two the 3rd hanger bar 4-3-2 are established at top, for hanging segregation of waste pipe 3-2.
Waste gas recovering device 5 (as shown in Figure 6) is made up of vent fan 5-1 and activated charcoal 5-2, and activated charcoal 5-2 one end is connected with described vent fan 5-1, and the other end is connected with exhaust outlet 5-3; The vent fan 5-1 Main Function that is connected with the outer wall of described closed composition cabinet 4 is extracted out by the air in closed composition cabinet, then adsorbed by activated charcoal, wherein vent fan air capacity 130m
3/ h (with reference to model: Song SRL-94 cun), activated charcoal length is respectively 30cm, 10cm and 10cm.
Following specific embodiment is implemented under premised on the technical program, gives detailed embodiment and operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
Apparatus of the present invention are utilized to carry out chlorobenzene dechlorination parallel laboratory test under constant flow condition, adopt 3 groups of parallel laboratory test posts, be labeled as No. 1 post, No. 2 posts and No. 3 posts, every post five sample taps, carry out sampling to the first, the 3rd and the 5th sample tap (being labeled as A, B and C sample tap respectively) from top to bottom and detect.
(1) experiment material preparation
According to 1 of configuration 100000 μ g/L, 2-dichlorobenzene solution (adding proper amount of methanol to promote to dissolve), close the drain pipe of one of them supplying bottle (supplying bottle), and a supplying bottle is filled prepare 1,2-dichlorobenzene solution, close the snorkel of a supplying bottle, stand-by; Another one supplying bottle (No. two supplying bottles) in-built a part of deionized water, closes the snorkel of No. two supplying bottles, closes all flowrate control valves after being discharged by air in flow controller, stand-by; Soak as the experiment reduced iron powder of the soil body, silica sand (0.05 ~ 0.2mm) with deionized water respectively, be divided into three parts, a copy of it is reduced iron powder (No. 1 post) entirely, second part is the quartz sand mixture (No. 2 posts) of the iron powder and 50% (v/v) of 50% (v/v), 3rd part is 50% (v/v) with the quartz sand mixture (No. 3 posts) of the iron powder (catalyzer nickel content 3wt%) after nickelous sulfate process and 50% (v/v), stand-by; Three kinds of particle diameter sandy gravels (2 ~ 3mm, 0.5 ~ 2mm and 0.05 ~ 0.5mm) deionized water is cleaned, puts respectively and soak stand-by with deionized water in a reservoir.
(2) assembling parallel laboratory test earth pillar
Assemble 3 parallel laboratory test posts respectively.First, the bottom joint of assembling plexiglass box, water inlet is closed with tongs, this joint volume 1/3 deionized water is injected in container, according to order from top to bottom, from coarse to fine, the sandy gravel of different thicknesses is loaded in container, loading height is followed successively by 1/2,3/8 and 1/8 of this joint height from top to bottom, mat surface height flushes with descending most the upper flange surface of joint glass container, and spread a circular filter screen (diameter is consistent with organic glass bore), prevent particle to bleed bed course, second, the middle joint of docking plexiglass box and lower joint, centre adds waterstop pad and prevents from leaking with bolt tightening, the middle joint of 3 parallel laboratory test posts loads 100% reduced iron powder (No. 1 post) respectively, iron powder and quartz sand mixture (volume ratio 1:1, No. 2 posts), iron powder containing Raney nickel and quartz sand mixture (volume ratio 1:1, No. 3 posts), be all that one deck loads layer by layer according to every 2cm during filling, namely first 2cm is loaded, filling 2cm is continued again after compacting, tamp again, so repeat filling, until fill up whole middle joint, deionized water submergence filling material all the time during filling, 3rd, the docking middle joint of plexiglass box and upper joint, centre adds waterstop pad and prevents from leaking with bolt tightening, filling protective seam in joint on plexiglass box, based in, fine grain sandy gravel, add top cover and waterstop pad, prevent from leaking with bolt tightening, finally, each experiment earth pillar is placed on parallel laboratory test carrying platform, docking plexiglass box water inlet and flow controller water delivering orifice, docking plexiglass box water delivering orifice and waste collection water inlet tube mouth, close flowrate control valve, leave standstill 24 hours and wait for iron powder natural consolidation.
(3) regulate for flow quantity
Open flowrate control valve, keep comparatively low discharge to supply water, allow deionized water slowly immerse the experiment soil body, until all plexiglass box water delivering orifices there are flowing out; Open droplet counter, after registration is stable, observes solution drip fast speed; Adjust flux operation valve, until it is 60 droplets/minute that solution drips speed, about 0.67ml/s, closes droplet counter after maintaining steady state value in 60 seconds; Open droplet counter every 5 minutes, detect solution and drip speed, adjust flux operation valve, until continuous three monitorings are dripped fast constant, then meet requirement of experiment for flow quantity.
(4) experiment is started
Close the supplying bottle drain pipe that deionized water is housed, open the supplying bottle drain pipe that solution is housed, close all glass doors, start experiment; First day from the sampling in every 3 hours of plexiglass box C sample tap once, is opened sample cock during sampling, is utilized microscale sampler slowly to extract 200 μ l samples, utilize liquid chromatograph synchronously to detect 1,2-dichloro-benzenes content; After plexiglass box C sample tap detects solute, synchronized sampling plexiglass box B sample tap, sample stored refrigerated, concentrates censorship (detect solute and comprise 1,2-dichloro-benzenes, chlorobenzene, benzene, chlorion) every day; After the bottom B sample tap of plexiglass box detects solute, the synchronous C sample tap detecting plexiglass box.
(5) make-up solution, process waste water
Make-up solution and process experiment wastewater is needed in experimentation.During make-up solution, keep supplying bottle water delivering orifice to close, open the snorkel of this supplying bottle, utilize water inlet pipe that deionized water is injected supplying bottle according to siphon principle; Experimentally working specification process experimental waste liquid.
(6) experiment is terminated, cleaning experiment device.
Table 1 reduced iron powder is to 1,2-dichloro-benzenes dechlorination effect parallel laboratory test result
Note: each experiment earth pillar establishes two sample taps, B mouth is positioned at time 3-20:00, and to represent sample time be the experiment 20:00 of the 3rd day.
Dechlorination experiment fundamental purpose is under constant flow condition, contrasts different iron content and the dechlorination effect having catalyst-free.Dechlorination experiment employing 3 earth pillars carry out parallel laboratory test, wherein part Experiment detects data in table 1, the data of this part are start the sampling result between at 8 o'clock in the evening of the 3rd day to the 5th day after testing thirty in the morning nine, wherein, 1B represents No. 1 post B sample tap, and 2B represents No. 2 post B sample taps, 3B represents No. 3 post B sample taps, 3A represents No. 3 post A sample taps, and 1,2, No. 3 earth pillar A, B, two sample tap 1,2-dichloro-benzenes concentration monitor values respectively as shown in Figure 7 and Figure 8.Result shows, under nickel catalytic action, iron powder is comparatively remarkable to 1,2-dichloro-benzenes dechlorination effect, final generation chlorobenzene and benzene after the dechlorination of 1,2-dichloro-benzenes; Iron content has certain influence to 1,2-dichloro-benzenes concentration change, but during catalyst-free effect, have no chlorobenzene and benzene generation, namely dechlorination reaction does not occur, 1,2-dichloro-benzenes concentration change by experiment earth pillar perviousness and may cause the characterization of adsorption of 1,2-dichloro-benzenes.
Embodiment 2
The concrete operation method using apparatus of the present invention to carry out constant flow Soil Under Conditions desalination (NaCl) parallel laboratory test (four groups of experiment earth pillars, fine sand three groups, Extra-fine sand one group in adopting respectively) is:
(1) experiment material preparation
Fill deionized water in two supplying bottles, close this supplying bottle snorkel, after being discharged by air in flow controller, close all flowrate control valves, stand-by; To test the soil body (middle fine sand 10 liters, Extra-fine sand 4 liters) with deionized water rinsing 3 times, being immersed in concentration is respectively in the salt solution of 0.035g/L 48 hours, stand-by; Three kinds of particle diameter sandy gravels (2 ~ 3mm, 0.5 ~ 2mm and 0.05 ~ 0.5mm) pure water is cleaned, puts respectively and soak stand-by with deionized water in a reservoir; Calculating simulation empirical flow, sample time and experiment end time, planning sampling Sample storage and testing process.
(2) assembling experiment earth pillar
First, the bottom joint of assembling plexiglass box, water inlet is closed with tongs, the deionized water of this joint volume 1/3 is injected in container, be loaded in container with order from coarse to fine by sandy gravel, loading height is followed successively by 1/2,3/8 and 1/8 of this joint height, and mat surface height flushes with descending most the upper flange surface of joint glass container, and spread a circular filter screen (diameter is consistent with organic glass bore), prevent particle to bleed bed course; Next, the middle node of docking plexiglass box and a bottom joint, centre adds waterstop pad and prevents from leaking with bolt tightening, is loaded respectively in full four plexiglass box by the experiment soil body after immersion and saves, and keeps the deionized water submergence experiment soil body during filling; 3rd, docking plexiglass box middle node and topmost a joint, centre adds waterstop pad and prevents from leaking with bolt tightening, protective seam is filled in plexiglass box topmost a joint, based in, fine grain sandy gravel, add top cover and waterstop pad, prevent from leaking with bolt tightening; Finally, each experiment earth pillar is placed on parallel laboratory test carrying platform, docking plexiglass box water inlet and flow controller water delivering orifice, docking plexiglass box water delivering orifice and waste collection water inlet tube mouth, keep flowrate control valve to close and leave standstill 24 hours, treat the abundant sedimentation of the experiment soil body.
(3) regulate for flow quantity
Open flowrate control valve, keep comparatively low discharge to supply water, allow deionized water slowly immerse the experiment soil body, until all plexiglass box water delivering orifices there are flowing out; Open droplet counter, after registration is stable, observes solution drip fast speed; Adjust flux operation valve, until it is 60 droplets/minute that solution drips speed, about 0.67ml/s, closes droplet counter after maintaining steady state value in 60 seconds; Open droplet counter every 5 minutes, detect solution and drip speed, adjust flux operation valve, until continuous three monitorings are dripped fast constant, then meet requirement of experiment for flow quantity.
(4) experiment is started
Close all glass doors, start experiment; First day from the sampling per hour of plexiglass box E sample tap once, opens sample cock during sampling, utilizes microscale sampler slowly to extract 200 μ l samples, measures solution concentration after diluting 50 times with sodium ion densimeter, record experimental result; After plexiglass box E sample tap detects solute, change sampling in every 4 hours into once, synchronized sampling plexiglass box D sample tap, detect Na ion concentration; After plexiglass box D sample tap detects solute, synchronized sampling plexiglass box C sample tap, detects Na ion concentration change, recursion successively.Make-up solution, process waste water.
Make-up solution and process experiment wastewater is needed in experimentation.During make-up solution, keep supplying bottle water delivering orifice to close, open this bottle of snorkel, utilize water inlet pipe that deionized water is injected supplying bottle according to siphon principle; Experimentally working specification process experimental waste liquid.
(5) experiment is terminated, cleaning experiment device
Desalination experiment fundamental purpose is under contrast constant flow condition, the speed of various soil mass and the desalination of the different flow soil body.Above-mentioned desalination experiment D sample tap (from bottom to top second sample tap) samples NaCl and detects data as shown in Figure 9.Result shows, injection flow is comparatively large to desalination rate, and flow increases (Q3 > Q2 > Q1), and desalination speed is obviously accelerated; Under constant flow condition, soil permeability (K2 > K1) is little to desalination rate.
Claims (9)
1. a sealed underground water-soluble matter Migration Simulation experimental provision, it is characterized in that, comprise liquid-supply unit (1), parallel laboratory test unit (2), devil liquor recovery unit (3), closed composition cabinet (4) and waste heat recovery unit (5), described liquid-supply unit (1), parallel laboratory test unit (2) are connected successively with devil liquor recovery unit (3) and are arranged at the inside of described closed composition cabinet (4), described closed composition cabinet (4) is connected with described waste heat recovery unit (5), wherein:
Described liquid-supply unit (1) comprises filter gas cylinder (1-1), supplying bottle (1-3), feed flow isocon (1-4) and one group of flow controller (1-5), and described filter gas cylinder (1-1) is connected with described supplying bottle (1-3) by wireway (1-2); Described supplying bottle (1-3) is connected with feed flow isocon (1-4); Described feed flow isocon (1-4) and flow controller (1-5) are connected;
Described parallel laboratory test unit comprises experiment earth pillar (2-1), plexiglass box (2-2) and sampling plug (2-3), described experiment earth pillar (2-1) is filled in described plexiglass box (2-2), described sampling plug (2-3) is located at the surface of described plexiglass box (2-2), and inner through plexiglass box sidewall loading test earth pillar;
Described closed composition cabinet (4) comprises a closed shell, the inside of described shell is separated into for liquid chamber (4-1), analog sample room (4-2) and waste liquid locker room (4-3) three parts, is respectively used to place liquid-supply unit (1), parallel laboratory test unit (2) and devil liquor recovery unit (3); Wherein, the described inside for liquid chamber (4-1) be provided with height for adjusting supplying bottle, dismountable lifting platform (4-1-1);
Described waste heat recovery unit (5) comprises vent fan (5-1) and activated charcoal (5-2), described activated charcoal (5-2) one end is connected with described vent fan (5-1), and the other end is connected with exhaust outlet (5-3); Described vent fan (5-1) is connected with the outer wall of described closed composition cabinet (4);
The described front for liquid chamber (4-1), analog sample room (4-2) and waste liquid locker room (4-3) all arranges glass door; Described lifting platform (4-1-1) is fixed on the sidewall for liquid chamber (4-1) by detachable gim peg (4-1-2); The bottom of lifting platform (4-1-1) is respectively arranged with the first hanger bar (4-1-3); Top for liquid chamber (4-1) arranges the fluid infusion hole (4-1-4) that two draft tube for supplying bottle (1-3) (1-3-2) pass, the surface of described lifting platform (4-1-1) arranges three intercommunicating pores (4-1-5), wherein the size of two intercommunicating pores (4-1-5) is corresponding with the bottleneck size of supplying bottle (1-3), and the size of another intercommunicating pore (4-1-5) is corresponding with the size of wireway (1-2);
Described analog sample room (4-2) is positioned at for liquid chamber (4-1) below, and be interconnected with for liquid chamber (4-1), the middle part of described analog sample room (4-2) is provided with crossbeam (4-2-1); The below of described crossbeam (4-2-1) is provided with two for hanging second hanger bar (4-2-2) of waste collection pipe (3-1), wherein, the length going out second hanger bar (4-2-2) of head piece (3-1-2) side of close waste collection pipe (3-1) is greater than the length of second hanger bar (4-2-2) of opposite side; Parallel laboratory test carrying platform (4-2-3) is set apart from 10 ~ 12cm place, bottom of described analog sample room (4-2), is built by two L-type angle steel, for placing the experiment earth pillar of parallel laboratory test; Described waste liquid locker room (4-3) is positioned at the right side of analog sample room (4-2) and is interconnected with analog sample room (4-2), is provided with support frame (4-3-1) between waste liquid locker room (4-3) and analog sample room (4-2); The top of described waste liquid locker room (4-3) establishes two for hanging the 3rd hanger bar (4-3-2) of segregation of waste pipe (3-2).
2. sealed underground according to claim 1 water-soluble matter Migration Simulation experimental provision, it is characterized in that, the bottleneck of described filter gas cylinder (1-1) upward, bottleneck is provided with the first rubber stopper (1-1-1), the first draft tube (1-1-2) and escape pipe (1-1-3) is embedded in described first rubber stopper (1-1-1), the entrance of described first draft tube (1-1-2) is connected with activated charcoal bag (1-1-4), and the bottom of filter gas cylinder (1-1) is stretched in outlet.
3. sealed underground according to claim 1 water-soluble matter Migration Simulation experimental provision, it is characterized in that, the number of described supplying bottle (1-3) is two, each supplying bottle (1-3) bottleneck down, bottleneck is provided with the second rubber stopper (1-3-1), embeds the second draft tube (1-3-2) and drain pipe (1-3-3) in described second rubber stopper (1-3-1); The bottle basal surface of described supplying bottle (1-3) arranges liquid supplementation pipe (1-3-4) and snorkel (1-3-5), described liquid supplementation pipe (1-3-4) extends to the position of bottleneck of supplying bottle (1-3), and described snorkel (1-3-5) is close at the bottom of the bottle of supplying bottle (1-3); Described liquid supplementation pipe (1-3-4) is connected with the first tongs (1-3-6); The entrance of each second draft tube (1-3-2) is connected with the gas outlet (1-2-2) of wireway respectively, check (non-return) valve (1-2-3) is respectively arranged with between the second draft tube (1-3-2) and the gas outlet (1-2-2) of wireway, the air intake opening (1-2-1) of described wireway is connected with the escape pipe (1-1-3) of filter gas cylinder (1-1), and the upper end port height of the air intake opening (1-2-1) of described wireway is higher than the height of supplying bottle (1-3).
4. sealed underground according to claim 1 water-soluble matter Migration Simulation experimental provision, it is characterized in that, described flow controller (1-5) comprises connecting pipe (1-5-1), for observing the flow windows (1-5-2) of dropping liquid state, for regulating droplet counter (1-5-3) and the flowrate control valve (1-5-4) of liquid droping speed, wherein, the upper end of described connecting pipe (1-5-1) is connected with the water delivering orifice (1-4-3) of feed flow isocon (1-4), lower end is connected with the water inlet (2-2-6) of plexiglass box, described flow windows (1-5-2) is opened in the top of described connecting pipe (1-5-1), described droplet counter (1-5-3) is nested in the outside of flow windows (1-5-2), described flowrate control valve (1-5-4) is arranged at the bottom of described connecting pipe (1-5-1).
5. sealed underground according to claim 1 water-soluble matter Migration Simulation experimental provision, it is characterized in that, described experiment earth pillar (2-1) comprises protective seam (2-1-1), dielectric layer (2-1-2) and bed course (2-1-3) from top to bottom successively, and the aspect ratio of protective seam (2-1-1), dielectric layer (2-1-2) and bed course (2-1-3) is 1: (1.5 ~ 3): (1 ~ 2); Wherein, described protective seam (2-1-1) is coarse particle sandy gravel; The transmission medium that described dielectric layer (2-1-2) is underground water solute migration; Described bed course (2-1-3) is filled with the sandy gravel from coarse to fine of particle diameter from bottom to top.
6. sealed underground according to claim 5 water-soluble matter Migration Simulation experimental provision, it is characterized in that, three layers of sandy gravel are filled in described bed course (2-1-3), packed height is followed successively by 1/2,3/8 and 1/8 of bed course height from bottom to top, wherein, particle diameter is from coarse to fine from bottom to top for three layers of sandy gravel, and the mean grain size difference of adjacent layer is at 2 ~ 3 times, and the mean grain size of the sandy gravel of the superiors is 2 ~ 3 times of the mean grain size of dielectric layer (2-1-2) medium.
7. sealed underground water-soluble matter Migration Simulation experimental provision according to claim 1 or 5, it is characterized in that, described plexiglass box (2-2) is plexi-glass tubular (2-2-1), described plexi-glass tubular (2-2-1) comprises joint, middle joint and lower joint three part, wherein the aspect ratio of upper joint, middle joint and lower joint three part is 1: (1.5 ~ 3): (1 ~ 2), corresponding with the height of the protective seam (2-1-1) of experiment earth pillar (2-1), dielectric layer (2-1-2) and bed course (2-1-3) respectively; Be fixed by plexiglass flange (2-2-2) and bolt (2-2-3) between the adjacent part of described plexi-glass tubular (2-2-1); Waterstop pad (2-2-4) is provided with between plexiglass flange (2-2-2), be provided with a row sample tap (2-2-5) in the outside of plexi-glass tubular (2-2-1), described sample tap (2-2-5) matches with sampling plug (2-3); The bottom of described plexi-glass tubular (2-2-1) is provided with water inlet (2-2-6), and described water inlet (2-2-6) is connected with flow controller (1-5); The top of described plexi-glass tubular (2-2-1) sets out the mouth of a river (2-2-7), and described water delivering orifice (2-2-7) is connected with devil liquor recovery unit (3); Described sampling plug (2-3) comprises and connects screen casing (2-3-1), threaded line pipe (2-3-2) and sample cock (2-3-3) successively, the dielectric layer (2-1-2) of wherein said screen casing (2-3-1) loading test earth pillar (2-1); Described threaded line pipe (2-3-2) is threaded with the sample tap (2-2-5) of described plexi-glass tubular (2-2-1).
8. sealed underground according to claim 7 water-soluble matter Migration Simulation experimental provision, it is characterized in that, the number of described sample tap is 3 ~ 8, wherein, a sample tap is arranged at the bottom of the upper joint of described plexi-glass tubular (2-2-1), a sample tap is arranged at the top of the lower joint of described plexi-glass tubular (2-2-1), and remaining sample tap is arranged at the middle joint of described plexi-glass tubular (2-2-1) uniformly.
9. sealed underground according to claim 1 water-soluble matter Migration Simulation experimental provision, it is characterized in that, described devil liquor recovery unit (3) comprises waste collection pipe (3-1), segregation of waste pipe (3-2) and at least one devil liquor recovery bottle (3-3), the head piece (3-1-1) that enters of described waste collection pipe (3-1) is connected with the water delivering orifice of experiment earth pillar (2-1), described waste collection pipe (3-1) to go out head piece (3-1-2) downward-sloping and be connected with segregation of waste pipe (3-2), described segregation of waste pipe (3-2) is connected with devil liquor recovery bottle (3-3) respectively, each devil liquor recovery bottle (3-3) bottleneck is upwards placed, and bottleneck is provided with rubber stopper (3-3-1) shutoff, and rubber stopper is embedded in water inlet pipe (3-3-2) and escape pipe (3-3-3), the water inlet pipe (3-3-2) of devil liquor recovery bottle (3-3) is connected with segregation of waste pipe (3-2).
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| CN106053297A (en) * | 2016-05-06 | 2016-10-26 | 同济大学 | An experimental system for intelligent penetration sampling and on-line monitoring for soil and underground water pollutants |
| CN106323374B (en) * | 2016-08-12 | 2017-08-25 | 中国水利水电科学研究院 | A kind of method that glacial ablation is detected based on tracer technique |
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