CN106680466B - A kind of device of water statical condition Imitating soil underground water oxygen content gradient distribution - Google Patents
A kind of device of water statical condition Imitating soil underground water oxygen content gradient distribution Download PDFInfo
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- G01N33/24—Earth materials
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The present invention relates to a kind of devices of water statical condition Imitating soil underground water oxygen content gradient distribution, contaminant transportation under oxygen content different condition, reaction, the correlation test of control and engineering can be caused to provide simulated environment because of layering for Study of The Underground water body.Including rainer, test earth pillar and anaerobic water feeder.The rainer includes water tank, intake pump, flow valve, shower nozzle and connecting pipe, and adjustable flow valve controls rainfall intensity；The test earth pillar includes the removable and assembled component of several same specifications, and each component is assemblied to form by two semicolumn tubing, and inside is handled using frosted, and side is provided with a series of hole connection samplers；The anaerobic water feeder includes improved Markov bottle, the terminal pad with valve connecting tube and with permeable stone inner core.Using the present apparatus, it is contemplated that water-gas is unevenly distributed situation in unsaturation-saturated zone, study resulting aerobic, anaerobism, contaminant transportation response situation in anaerobic environment, pass through the assembly and disassembly to different number model simultaneously, adapt to the simulation test of different length, model utilization rate is improved, cost is reduced.
Description
Technical field
Contaminant transportation reaction in the present invention relates to one kind under water statical condition soil and underground water unsaturation-saturated zone
Conversion test simulator, especially consideration pollutant are ground during vertical migration by underground water oxygen content Different Effects
Study carefully.
Technical background
With the rapid propulsion of the industrialization of the country, economic sustainable development, environmental pollution has become increasingly serious, and especially water provides
Source environmental problem is more prominent, also increasingly serious along with the serious pollution of surface water resources and shortage, underground water pollution.And ground
It is lauched since it is located at the complexity of earth's surface invisibility below and underground environment, it is difficult to rely on soil-ground water regime
Itself is repaired, once contaminated post-processing difficulty is huge.Therefore transport reaction rule of the research pollutant in soil and groundwater
Rule and its influence factor are particularly significant, it will help prediction and evaluation underground water pollution degree, and be control rehabilitating soil and ground
Lower water pollution provides scientific basis.
Vertical soil-column test model is the important means of contaminant transportation in domestic and international research soil and groundwater, using this
Model is very intuitive in Study of The Underground water pollutant transport reaction rule, is to disclose pollutant and migrate in ground water regime to turn
Change the good approach of mechanism.Currently, vertical soil-column test model used in laboratory is relatively simple, have a single function, specifically exists
Following problems:
1, ignore the effect of rainfall.Since rainfall infiltration is the important source of the recharge of ground water, underground in this course
The increase of various ingredients variation such as underground water oxygen content, pollutant enter in soil with rainwater is infiltrated in water, oxygen in soil aperture
Reduction of Gas content etc., and conventional model can not effectively change rainfall intensity.
2, ignore body of groundwater and increase oxygen different distributions problem with depth.Due to water-gas in unsaturation-saturated zone
It is unevenly distributed situation, resulting aerobic, anaerobism, anaerobic environment, the underground water of different oxygen contents, pollutant is wherein
Reaction process it is completely different.Dissolved oxygen is important electron acceptor, such as in the presence of oxygen, NH4 +Ion first exists
NO is oxidized under specific bacteria effect-；Under anaerobic environment, NO-Then by many bacteriums as breathing electron acceptor.
Therefore, oxygen concentration directly affects the direction that N is converted.
3, functional module does not have subsequent upgrade space.With going deep into for research, model function and parameter need constantly to adjust
It is whole, however the typically no subsequent improvement of consideration of existing model, the test of different length or depth, recycling rate of waterused are not adapted to
It is low.
Summary of the invention
The present invention is a kind of device of water statical condition Imitating soil underground water oxygen content gradient distribution, is overcome above-mentioned
Deficiency in existing apparatus technology, the model consider rainfall and oxygen content factor, and structure is simpler, and design is reasonable, systematic error
It is small, convenient and high recycling rate is sampled, scientific research and popularization and use are convenient for.
A kind of device of water statical condition Imitating soil underground water oxygen content gradient distribution proposed by the present invention, including drop
Rain device 1, test earth pillar 2 and anaerobic water feeder 3, the adjustable flow valve of the rainer 1 control rainfall intensity, packet
Water tank 11, connecting pipe 12, intake pump 13, flow valve 14 and shower nozzle 15 are included, water tank 11 passes through connecting pipe 12, intake pump 13
Shower nozzle 15 is connected with flow valve 14；The test earth pillar 2 includes, each component assembled by the component 21 of several same specifications
21 are formed by connecting by two semicolumn tubing by ring flange 22 with holes and aperture sides fixed block 23, are adopted inside semicolumn tubing
It is handled with frosted, side is provided with several sampling holes, for connecting syringe type sampler 24；The anaerobic water feeder 3
It is made of Markov bottle 4, the terminal pad 5 with valve connecting tube 46 and with permeable stone inner core, 4 bottom of Markov bottle passes through band valve and connects
The terminal pad 5 of 46 connecting band permeable stone inner core of pipe, the terminal pad 5 with permeable stone inner core is located at test 2 bottom of earth pillar, described
Shower nozzle 15 is located at 2 top of test earth pillar.
In the present invention, it is highly 200mm that 21 internal diameter of component, which is 150-160mm, outer diameter 160-170mm, inner wall mill
Water flow short circuit is eliminated in sand processing；22 internal diameter of ring flange is 150-160mm, outer diameter 190-200mm, with a thickness of 10mm；Institute
Stating 23 length and width of aperture sides fixed block is 10-15mm, with a thickness of 5mm, is located at 80mm at the top and bottom of range semicircle column tube material
Place, is each provided with 2；The ring flange 22, which is circumferentially opened, uniformly opens 8 holes, is 3- with 23 opening diameter of side fixed block
5 mm are adapted to the bolt of respective diameters；The sampling hole airtight connection syringe type sampler 24, in cylindrical surface component 21
Laterally at 1/3, vertical direction is arranged every 65mm in one semicolumn tubing face, to sample for follow-up test analysis.
In the present invention, the improved Markov bottle 4 by glass tube 41, rubber stopper 42, the Nanoscale Iron adding tube 43 with valve,
Water inlet pipe 44 with valve, bottom densification screen membrane 45 form；The Markov bottle passes through band valve pipe 46 and earth pillar bottom connects
The connection of device 5 is connect, the anaerobic water of the simulation deep phreatic water anaerobic environment to supply different height into test earth pillar.
In the present invention, 4 side of Markov bottle is connected with the Nanoscale Iron adding tube 43 with valve, can be added into Markov bottle 4
Deoxidant, 4 bottom of Markov bottle are provided with strainer 45, can be added into Markov bottle 4 by the Nanoscale Iron adding tube 43 with valve
Deoxidant, the Fe (OH) of formation3It is stopped by strainer 45.
In the present invention, the terminal pad 5 is formed by stacking by two layers of cylindrical tube 51,51 flange plate of Upper cylindrical pipe, upper layer
Permeable stone 52 is inlayed in cylindrical tube 51, bead 53 is placed in lower layer's cylindrical tube 51, and 51 bottom of lower layer's cylindrical tube connects water inlet pipe
46,51 bottom of lower layer's cylindrical tube is equipped with band valve outlet pipe 54, more uniform when to make water flow enter earth pillar, hydraulic property
More preferably.
In the present invention, 51 internal diameter of cylindrical tube in the terminal pad 5 is 150-160mm, outer diameter 160-170mm, height
For 40-60mm；The ring flange internal diameter is 150-160mm, outer diameter 190-200mm, with a thickness of 10mm, is circumferentially opened uniformly
8 holes are opened, opening diameter is 3-5 mm, is adapted to the bolt of respective diameters, is bolted to connection with top earth pillar；It is built-in
20-30mm thickness permeable stone 52, the glass bead layer 53 after 20-30mm, bottom water inlet pipe 46 internal diameter aperture 50-60mm, outer diameter 55-
65mm, 54 internal diameter aperture of bottom outlet pipe are 20-30mm, outer diameter 25-35mm, pipe range 30-40mm.
Beneficial effects of the present invention:
1, the present invention provides the dewatering device that can change raininess, passes through Rainfall Recharge so as to study
Various ingredients change the increase such as underground water oxygen content in underground water in the process, and pollutant enters in soil with rainwater is infiltrated, soil
The influence that contaminant transportation in underground water is reacted in reduction of oxygen content etc. in earth hole.
2, solve the problems, such as that former device does not consider that body of groundwater increases oxygen distribution gradient with depth.Pass through improvement
Markov bottle with to test earth pillar in supply different height simulation deep phreatic water anaerobic environment anaerobic water.Lower layer's anaerobic water
It is mixed with the water full of oxygen of upper layer rainfall infiltration, to be formed with the groundwater occurrence of oxygen gradient in vertical direction.
Experiment dress is provided as the related experiment of the great influence factor for oxygen content in relevant simulation soil-ground water regime from now on
Set reference.
3, there is great flexibility and operability in sampling.There is connection syringe type sampler in earth pillar side,
Convenient for experiment water sample is observed and is acquired；Sampling hole can transform the point source pollutant inlet of different depth as simultaneously, grind
Study carefully the influence of different depth pollutant injection；In addition, by the lateral and vertical dismantling to model, can use after experiment
Each position soil sample carries out assay, more conducively accurate assurance pollutant spread condition and absorption situation in the soil.
4, earth pillar component, which has, provides standard component, by the i.e. composable length model for meeting different requirements of combination, greatly
The recycling rate of waterused for improving single component, can be produced in batches, and large-scale promotion is convenient for.
Detailed description of the invention
Fig. 1 is general structure schematic diagram of the present invention；
Fig. 2 is earth pillar component cylinder tubing schematic diagram of the present invention；
Figure label: 1 is rainer, and 11 be water tank, and 12 be connecting pipe, and 13 be intake pump, and 14 be flow valve, and 15 are
Shower nozzle, 2 be test earth pillar, and 21 cylinder tubes, 22 be ring flange, and 23 be side link block, and 24 fill for syringe sampling
It sets, 3 be anaerobic water feeder, and 4 be improved Markov bottle, and 41 be glass tube, and 42 be rubber stopper, and 43 be the Nanoscale Iron with valve
Adding tube, 44 be band valve water inlet pipe, and 45 be filtering net film, and 46 be band valve connecting pipe, and 5 be terminal pad, 51 flange plates
Cylindrical tube, 52 be permeable stone, and 53 be bead, and 54 be band valve outlet conduit.
Specific embodiment
The present invention is further illustrated below by embodiment combination attached drawing.
L embodiment 1: as shown in Figure 1, with the connection relationship between each component of explanatory note, supplement
L is supplemented as shown in Fig. 2, with the connection relationship between each component of explanatory note
Embodiment 2: using device described in embodiment 1, carries out nitrate transfer conversion test.
1, it standby soil: is sampled away from earth's surface 10 ~ 15m depth.In laboratory, middle sand is carried out it is air-dried, through 2mm
It is screened, measures bulk density, porosity, nitrate nitrogen content, nitrite nitrogen content, ammonia-nitrogen content, the content of organic matter, PH.
2, it assembles: connecting rainer 1 and anaerobic water feeder 3, the various pieces for testing earth pillar are passed through into bolt
In ring flange 22, side link block 23 splices, and earth pillar and terminal pad are spliced, and the valve of all pipelines remains turned-off.
3, it bankets: soil after sieve being subjected to layering filling, and is slightly tamped, it is ensured that water flow can be real in earth pillar
Now go up and down the homogeneity with soil texture.
4, inject anaerobic water: the glass tube 41 of adjustment geneva screen 4 to proper height opens the valve of water injection pipe 44, inward
Face is filled with nitrogen 5 minutes, is subsequently charged with processed not oxygenous water body until 4 water of Markov bottle is full；Close the valve of water injection pipe 44
Door, the valve of opening conduits 46 wait level stability in earth pillar silently, close 46 valve of connecting pipe；It beats in this process
It outputs 54 valve of waterpipe and surveys content of oxygen dissolved in water under air-proof condition, Nanoscale Iron oxygen scavenger is opened if detecting oxygen
43 valves, it is urgent to remove oxygen until detecting that oxygen content is zero, it is then turned off 43 valve of Nanoscale Iron adding tube, water outlet 54
Locate valve, continues to wait level stabilities, close 46 valve of connecting pipe.
5, rainfall: controlling certain raininess, opens flow valve valve 14 in firm discharge position, opens intake pump 15, start
Rainfall waits after there is certain ponding to the surface layer soil body, puts water pump 15 and flow control valve 14 into immediately.
6, pollutant injects: after standing 2h, moment injects 2L, 500mg/L potassium nitrate solution at the top of earth pillar, then quiet
It sets.
7, it samples: being sampled according to experimental program in different moments, different location, survey nitre state with ultraviolet spectrophotometry
Nitrogen, N- (1 naphthalene)-ethylenediamine spectrophotometry survey nitrite nitrogen, and Nessler's reagent photometer surveys ammoniacal nitrogen, and DO test device is surveyed
Dissolved oxygen content.
8, after to be tested, 54 valve of outlet conduit is opened, water is vented, model backward is disassembled, can be completed pair
Soil sample layering acquisition and subsequent cleaning after test, facilitate reuse.
Claims (4)
1. a kind of device of water statical condition Imitating soil underground water oxygen content gradient distribution, it is characterised in that filled including rainfall
(1), test earth pillar (2) and anaerobic water feeder (3) are set, the adjustable flow valve control rainfall of rainer (1) is strong
Degree, including water tank (11), connecting pipe (12), intake pump (13), flow valve (14) and shower nozzle (15), water tank (11) pass through company
Adapter tube road (12), intake pump (13) and flow valve (14) connection shower nozzle (15)；The test earth pillar (2) includes by several with rule
The component (21) of lattice is assembled, and each component (21) passes through ring flange with holes (22) and aperture sides by two semicolumn tubing
Fixed block (23) is formed by connecting, and is handled inside semicolumn tubing using frosted, and side is provided with several sampling holes, for connecting injection
Device formula sampler (24)；The anaerobic water feeder (3) is by Markov bottle (4), band valve connecting tube (46) and with permeable stone
The terminal pad (5) of inner core forms, and Markov bottle (4) bottom passes through the terminal pad with valve connecting tube (46) connecting band permeable stone inner core
(5)；The terminal pad (5) with permeable stone inner core is located at test earth pillar (2) bottom, and the shower nozzle (15) is located at test earth pillar
(2) top；The Markov bottle (4) is by glass tube (41), rubber stopper (42), the Nanoscale Iron adding tube (43) with valve, band valve
Water inlet pipe (44) and bottom densification screen membrane (45) composition；The Markov bottle passes through band valve pipe (46) and earth pillar bottom connects
Device (45) connection is connect, the anaerobic water of the simulation deep phreatic water anaerobic environment to supply different height into test earth pillar.
2. a kind of device of water statical condition Imitating soil underground water oxygen content gradient distribution according to claim 1,
It is characterized in that the component (21) internal diameter is 150-160mm, outer diameter 160-170mm, is highly 200mm, inner wall frosted processing
Eliminate water flow short circuit；Ring flange with holes (22) internal diameter is 150-160mm, outer diameter 190-200mm, with a thickness of 10mm；Institute
Stating aperture sides fixed block (23) length and width is 10-15mm, with a thickness of 5mm, is located at the top and bottom of range semicircle column tube material
At 80mm, it is each provided with 2；The ring flange with holes (22), which is circumferentially opened, uniformly opens 8 holes, with aperture sides fixed block
(23) opening diameter is 3-5 mm, is adapted to the bolt of respective diameters；The sampling hole airtight connection syringe type sampler
(24), laterally at 1/3, vertical direction is arranged every 65mm for semicolumn tubing face in component (21), to sample for
Follow-up test analysis.
3. a kind of device of water statical condition Imitating soil underground water oxygen content gradient distribution according to claim 1,
It is characterized in that the terminal pad (5) is formed by stacking by two layers of cylindrical tube (51), Upper cylindrical pipe (51) flange plate, upper layer cylinder
It is inlayed permeable stone (52) in pipe (51), places bead (53) in lower layer's cylindrical tube (51), the connection of lower layer's cylindrical tube (51) bottom
Water inlet pipe (46), lower layer's cylindrical tube (51) bottom are equipped with band valve outlet pipe (54), when to make water flow enter earth pillar more
Uniformly, hydraulic property is more preferable.
4. a kind of device of water statical condition Imitating soil underground water oxygen content gradient distribution according to claim 3,
It is characterized in that cylindrical tube (51) internal diameter in the terminal pad (5) is 150-160mm, outer diameter 160-170mm, is highly 40-
60mm；The ring flange internal diameter is 150-160mm, outer diameter 190-200mm, with a thickness of 10mm, circumferentially opens and uniformly opens 8
Hole, opening diameter are 3-5 mm, are adapted to the bolt of respective diameters, are bolted to connection with top earth pillar；Built-in 20-30mm
Thick permeable stone (52), the glass bead layer (53) of 20-30mm thickness, bottom water inlet pipe (46) internal diameter aperture 50-60mm, outer diameter 55-
65mm, bottom outlet pipe (54) internal diameter aperture are 20-30mm, outer diameter 25-35mm, pipe range 30-40mm.
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