CN104569353A - Aeration zone soil adsorption parameter tester based on strong adsorption pollutants - Google Patents
Aeration zone soil adsorption parameter tester based on strong adsorption pollutants Download PDFInfo
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Abstract
The invention provides an aeration zone soil adsorption parameter tester based on strong adsorption pollutants. The aeration zone soil adsorption parameter tester comprises a detachable soil column, a buffering section, a soil column fixing device, a sampling device, a constant water head fixing device, a constant water head water feeding device, a constant water head liquid supplying device and a water supplying and liquid supplying switching device, wherein a soil sample is put into the detachable soil column; the detachable soil column is composed of a soil column inner ring, a soil column outer ring, an inner ring handle and an outer ring handle; the buffering section is composed of an organic glass tube, a gauze element A, a gauze element B, an organic glass plate with holes and a quartz sand filtering layer; the constant water head water feeding device and the constant water head liquid supplying device are mounted on the constant water head fixing device, and the upper and lower positions of the constant water head water feeding device and the constant water head liquid supplying device can be adjusted; the bottom of the constant water head water supplying device is connected with a water outlet pipe; and the bottom of the constant water head liquid supplying device is connected with a liquid outlet pipe. The device can be used for accurately determining retardation factors and distribution factors of the pollutants with the relatively strong adsorption effect in aeration zone soil; and meanwhile, the method is simple and reliable.
Description
Technical field
The present invention relates to a kind of aerated zone soil absorption parametric measurement device, specifically relate to a kind of aerated zone soil based on strong adsorption fouling thing absorption parameter determinator.
Background technology
Along with soil physics and the fast development of computing technology in modern age, current in the quantitative examination of solute transfer, adopt the method for mathematical model to study much more more and more and grasp chemical fertilizer, the agricultural chemicals transition process in unsaturated soil.For this reason, necessary parameter in mathematical model is correctly determined, as solute transfer governing equation---the block characteristics, partition factor etc. of convective-diffusive equation just become a necessary job.It is for research chemical fertilizer, agricultural chemicals etc. to the pollution of underground water, and the regional water salt characteristics of motion, wastewater treatment and reutilization technology, have great importance.
Absorption is the external manifestation of the physics chemical action between solid phase in soil, liquid phase, and it take part in the migration process of solute in soil, plays retardation to solute transfer.When solving soil solute transport equation, if solute by adsorption by soil, then can must be determined by experiment block characteristics R
dand the partition factor K of solute in soil-aqueous systems
d.The block characteristics R of solute transfer
d, i.e. the ratio of flow rate of water flow and solute transfer speed, dimensionless, characterizes the parameter of soil retardance solute migration ability.The partition factor K of solute in soil-aqueous systems
d, also known as absorption ratio, refer to that when reaching equilibrium state in soil-water two-phase system, the concentration proportion of solute in soil and water, conventional unit is cm
3/ g is the important physical chemical feature parameter describing solute absorption behavior in soil.
In physical chemistry and pedology, common static empirical assay determination aerated zone soil absorption parameter.But large quantifier elimination shows, the measurement result of static experiment, obviously more higher than the experimental result under infiltration condition.This is because in static experiment, all surfaces of soil particle all interacts with solution, and under infiltration condition, soil sample is not stirred, and the part surface that suction-operated only contacts with solution at particle is carried out.
So dynamic earth pillar determination of adsorption method adsorption by soil parameter should be adopted.And for the ferocious pollutant of suction-operated, as heavy metal ion (Cd
2+, Pb
2+, Hg
2+deng), their migration velocity and slow, major part is attracted to earth pillar top layer.When calculating adsorption by soil parameter, solute concentration cannot measured along journey distribution curve along journey water sampling, can only stratified sampling from top to bottom after experiment terminates, determine their genesis analysis situations in earth pillar by the adsorbance measuring sample soil.And current traditional earth pillar, can only cut earth pillar after experiment terminates, be divided into sampling, this causes the complicated operation of testing, and easily carries out disturbance to soil, too increases the danger coefficient of experiment simultaneously.
Summary of the invention
The invention provides a kind of aerated zone soil based on strong adsorption fouling thing absorption parameter determinator, which solves prior art Problems existing, this invention can after experiment terminates, layering soil sampling, thus the retardation factor of the stronger suction-operated pollutant of Accurate Determining in aerated zone soil and partition factor, and the method is simple and convenient.
Realizing the technical scheme that above-mentioned purpose of the present invention adopts is:
A kind of absorption of the aerated zone soil based on strong adsorption fouling thing parameter determinator, comprise detachable earth pillar, breeze way, earth pillar stationary installation, sampler, determine head stationary installation, determine head water supply installation, determine head liquid feed device and water supply feed flow switching device shifter, soil sample is contained with in described detachable earth pillar, detachable earth pillar is by earth pillar inner ring, earth pillar outer shroud, inner ring handle and outer shroud handle composition, earth pillar inner ring cylindrically, its outer wall is provided with a vertical breach, the radian of breach is 0.3 ~ 0.7 π, inner ring handle is mounted on the top of earth pillar inner ring, earth pillar outer shroud is divided into inside and outside two-layer, its internal layer is the arc identical with the shape of the breach of earth pillar inner ring, its skin cylindrically, internal layer and skin are pasted fixing mutually, and the external diameter of outer field internal diameter and earth pillar inner ring matches, earth pillar inner ring sleeve is loaded on the inside of earth pillar outer shroud and can moves up and down in earth pillar outer shroud, and the breach of earth pillar inner ring is corresponding with the internal layer position of earth pillar outer shroud, the height of earth pillar inner ring is greater than earth pillar outer shroud, and outer shroud handle is installed on the middle part of earth pillar outer shroud, sampler is arranged at the top of earth pillar outer shroud for sampling from earth pillar, and sampler is positioned at the corresponding position of internal layer on earth pillar outer shroud, described breeze way is made up of plexi-glass tubular, gauze A, gauze B, poly (methyl methacrylate) plate with holes and silica sand filtering layer, wherein gauze A, silica sand filtering layer, poly (methyl methacrylate) plate with holes and gauze B are from top to bottom positioned in plexi-glass tubular successively, wherein gauze A contacts with soil sample, and poly (methyl methacrylate) plate with holes is positioned at 8 ~ 12cm place, top of the bottom surface of plexi-glass tubular, the internal diameter of plexi-glass tubular is identical with the internal diameter of earth pillar inner ring, and the bottom surface of plexi-glass tubular is provided with entrance, and porch is connected with input pipe, described earth pillar stationary installation is made up of web joint, fixed screw, rubber ring and base, wherein breeze way is fixed on base, the below of base is provided with support, web joint is installed on the junction between detachable earth pillar and breeze way, detachable earth pillar is fixed on the top of breeze way, rubber ring, between detachable earth pillar and breeze way, seals both junctions, be respectively equipped with four screw holes in the corresponding position at base and web joint four angles, web joint and base can be fixed together by fixed screw,
Described determine head stationary installation by determining head fixed mount and iron rod forms, iron rod is provided with 4 and is vertically arranged on to be determined on head fixed mount, determines head water supply installation, determines head liquid feed device and be all installed on and determine in head stationary installation and both upper-lower positions are adjustable; The bottom of determining head water supply installation is connected with rising pipe, the bottom of determining head liquid feed device is connected with drain pipe, rising pipe, drain pipe and input pipe are all connected with water supply feed flow switching device shifter, described water supply feed flow switching device shifter is made up of three-way connection, operation valve A and operation valve B, rising pipe, drain pipe and input pipe are all connected with three-way connection, rising pipe has operation valve A, drain pipe has operation valve B; Operation valve A opens, operation valve B closes, for earth pillar service position; Operation valve A closes, operation valve B opens, for supplying liquid status to earth pillar.
Described sampler is made up of copper pagoda and seal head, and copper pagoda is contained in apart from 5cm place, earth pillar top, seal head has the screw thread matched with copper pagoda.
Described head water supply installation of determining is made up of baffle plate, water supply run-down pipe, feed pipe, rising pipe and interior rotary screw, determine the rectangular parallelepiped box that head water supply installation is the scarce end face of high 10cm, the height of baffle plate is 8cm, baffle plate is vertically fixed in rectangular parallelepiped box, by whole determine head water supply installation be divided into left and right two Room, bottom left room, Far Left is provided with apopore, and rising pipe is connected with apopore; Bottom left room, right side is provided with water supply hole, and feed pipe is connected with water supply hole; Be provided with spout hole bottom right ventricle, water supply run-down pipe is connected with spout hole; The rear wall determining head water supply installation has two holes passed through for iron rods, can be fixed on determine head water supply installation and determines on head fixed mount by screwing interior rotary screw.
Described head liquid feed device of determining is made up of baffle plate, feed flow run-down pipe, feed pipe, drain pipe and interior rotary screw, determine the rectangular parallelepiped box that head liquid feed device is the scarce end face of high 10cm, the height of baffle plate is 8cm, baffle plate is vertically fixed in rectangular parallelepiped box, by whole determine head liquid feed device be divided into left and right two Room, bottom left room, Far Left is provided with fluid hole, and drain pipe is connected with fluid hole; Bottom left room, right side is provided with for fluid apertures, and feed pipe is connected with for fluid apertures; Be provided with spout hole bottom right ventricle, feed flow run-down pipe is connected with spout hole; The rear wall determining head liquid feed device has two holes passed through for iron rods, can be fixed on determine head liquid feed device and determines on head fixed mount by screwing interior rotary screw.
The principle of work of a kind of absorption of the aerated zone soil based on strong adsorption fouling thing parameter determinator of the present invention is as follows:
When movement velocity lower than soil moisture of the migration velocity of solute, solute transfer is blocked.Difference between the movement velocity of soil moisture and the migration velocity of solute, caused by adsorption by soil solute, uses block characteristics R usually
dassess the migration velocity of the solute blocked:
In formula: R
d-be the block characteristics of solute transfer in soil;
υ
w-be the average pore flow velocity of soil moisture, cm/min;
υ
c-be the average migration velocity of soil solute, cm/min.
By measuring υ
wand υ
c, can ask and calculate R
d.Then, utilize formula (2) that partition factor K can be calculated
d:
In formula: R
d-be block characteristics;
ρ
d-be the dry density of soil, g/cm
3;
θ-be the volumetric water content of soil, cm
3/ cm
3;
K
d-be the partition factor of solute in soil-aqueous systems, cm
3/ g.
Aerated zone soil based on strong adsorption fouling thing absorption parameter determinator of the present invention compared with prior art has following advantage:
(1) analyzer of the present invention is the aerated zone soil absorption parameter determined by dynamic earth pillar absorption method, the part surface that suction-operated only contacts with solution at particle is carried out, and all surfaces of static adsorptive method soil particle all interacts with solution, the method is compared more accurately and reliably than static adsorptive method.
(2) the present invention is by being combined into detachable earth pillar by earth pillar inner ring and earth pillar outer shroud, can after experiment terminates layering soil sampling, obtain the genesis analysis situation of adsorbance in earth pillar of sample soil, thus calculate the absorption parameter of strong adsorption fouling thing at aerated zone soil.
(3) analyzer structure of the present invention is simple, easy to use, is with a wide range of applications.As being widely used in aeration zone hydrologic research, contribute to as instruments used for education principle and the scope of application thereof that student better understands strong adsorption fouling thing aerated zone soil absorption parameter; And can be used for measuring strong adsorption fouling thing aerated zone soil absorption parameter aborning, for farmland soil modifying provides research parameter, for strong adsorption fouling thing provides research parameter in the migration of aerated zone soil.
Accompanying drawing explanation
Fig. 1 is a kind of aerated zone soil based on strong adsorption fouling thing absorption parameter determinator structural representation.
Fig. 2 is the structural representation of detachable earth pillar of the present invention.
Fig. 3 determines head water supply installation vertical view in the present invention.
In figure: the detachable earth pillar of 1-, 2-gauze A, 3-web joint, 4-gauze B, 5-silica sand filtering layer, 6-poly (methyl methacrylate) plate with holes, 7-three-way connection, 8-operation valve A, 9-operation valve B, 10-determines head liquid feed device, 11-baffle plate, 12-feed flow run-down pipe, 13-feed pipe, 14-drain pipe, 15-determines head water supply installation, 16-water supply run-down pipe, 17-feed pipe, 18-rising pipe, 19-determines head fixed mount, 20-input pipe, 21-earth pillar support, 22-copper pagoda, 23-seal head, 24-outer shroud is shaken hands, 25-inner ring is shaken hands, 26-rubber ring, 27-earth pillar inner ring, 28-fixed screw, 29-earth pillar outer shroud, 30-rear wall, 31-iron rod, rotary screw in 32-, 33-spout hole, 34-water supply hole, 35-apopore.
Embodiment
Below in conjunction with specific embodiment, detailed specific description is done to the present invention, but protection scope of the present invention is not limited to following examples.
A kind of absorption of the aerated zone soil based on strong adsorption fouling thing parameter determinator provided by the invention, its structure as shown in Figure 1.Comprise detachable earth pillar 1, breeze way, earth pillar stationary installation, sampler, determine head stationary installation, determine head water supply installation 15, determine head liquid feed device 10 and water supply feed flow switching device shifter, soil sample is contained with in described detachable earth pillar, the structure of detachable earth pillar as shown in Figure 2, by earth pillar inner ring 27, earth pillar outer shroud 29, inner ring handle 25 and outer shroud handle 24 composition, earth pillar inner ring 27 cylindrically, for long 120cm, internal diameter 20cm, the plexi-glass tubular of wall thickness 1cm, its outer wall is provided with a vertical breach, the radian of breach is 0.5 π, inner ring handle 25 is mounted on the top of earth pillar inner ring 27, earth pillar outer shroud 29 is divided into inside and outside two-layer, its internal layer is the arc identical with the shape of the breach of earth pillar inner ring, its skin cylindrically, for long 100cm, internal diameter 22cm, the complete plexi-glass tubular of wall thickness 1cm, internal layer and skin are pasted fixing mutually, and the external diameter of outer field internal diameter and earth pillar inner ring matches, earth pillar inner ring 27 is set in the inside of earth pillar outer shroud 29 and can moves up and down in earth pillar outer shroud 29, the breach of earth pillar inner ring 27 is corresponding with the internal layer position of earth pillar outer shroud 29, the height of earth pillar inner ring 27 is greater than earth pillar outer shroud 29, outer shroud handle 24 is installed on the middle part of earth pillar outer shroud.Painting one deck glass cement very thin on the long limit of earth pillar inner ring 27 and earth pillar outer shroud 29, inserts in earth pillar outer shroud 29 with inner ring handle 24 by earth pillar inner ring, and after inserting, earth pillar inner ring 27 top is appointed and left 20cm height; Very thin glass cement can ensure that earth pillar inner ring 27 and earth pillar outer shroud 29 contact position seal, and due to the more weak cementing property of fluid sealant, can after experiment terminates, hold inner ring handle 25 to shake hands 24 to exert oneself to both direction with outer shroud, earth pillar inner ring 27 can be separated with earth pillar outer shroud 29, thus layering is fetched earth.
Sampler is arranged at the top of earth pillar outer shroud 29 for sampling from earth pillar, and sampler is positioned at the corresponding position of internal layer on earth pillar outer shroud 29.Described sampler is made up of copper pagoda 22 and seal head 23, and copper pagoda 22 is contained in apart from 5cm place, earth pillar top, seal head 23 has the screw thread matched with copper pagoda 22.
Described breeze way is made up of plexi-glass tubular, gauze A2, gauze B4, poly (methyl methacrylate) plate with holes 6 and silica sand filtering layer 5, wherein gauze A2, silica sand filtering layer 5, poly (methyl methacrylate) plate with holes 6 and gauze B4 are from top to bottom positioned in plexi-glass tubular successively, wherein gauze A2 contacts with soil sample, and poly (methyl methacrylate) plate 6 with holes is positioned at the 10cm place, top of the bottom surface of plexi-glass tubular; The internal diameter of plexi-glass tubular is identical with the internal diameter of earth pillar inner ring, and its long 20cm, internal diameter 20cm, wall thickness 1cm, the bottom surface of plexi-glass tubular is provided with entrance, and porch is connected with input pipe 20.
Described earth pillar stationary installation is made up of web joint 3, fixed screw 28, rubber ring 26 and base, wherein breeze way is fixed on base, the below of base is provided with earth pillar support 21, web joint 3 is installed on the junction between detachable earth pillar 1 and breeze way, detachable earth pillar 1 is fixed on the top of breeze way, web joint 3 front opening diameter is 24cm, can screw in for detachable earth pillar; The reverse side opening diameter of web joint is 22cm, and can screw in for breeze way, rubber ring 26, between detachable earth pillar and breeze way, seals both junctions.Be respectively equipped with four screw holes in the corresponding position at base and web joint 3 four angles, web joint 3 and base can be fixed together by fixed screw 28, thus detachable earth pillar and breeze way are fixed.Earth pillar support 21 is the poly (methyl methacrylate) plate of four high 5cm, is connected with bottom earth pillar by chloroform.
Described determine head stationary installation by determining head fixed mount 19 and iron rod 31 forms, iron rod 31 is provided with 4 and is vertically arranged on to be determined on head fixed mount 19, determines head water supply installation 15, determines head liquid feed device 10 and be all installed on and determine in head stationary installation and both upper-lower positions are adjustable; The bottom of determining head water supply installation 15 is connected with rising pipe 18, the bottom of determining head liquid feed device 10 is connected with drain pipe 14, rising pipe 18, drain pipe 14 and input pipe 20 are all connected with water supply feed flow switching device shifter, described water supply feed flow switching device shifter is made up of three-way connection 7, operation valve A8 and operation valve B9, rising pipe 18, drain pipe 14 and input pipe 20 are all connected with three-way connection 7, rising pipe 18 has operation valve A8, drain pipe 14 has operation valve B9; Operation valve A opens, operation valve B closes, for earth pillar service position; Operation valve A closes, operation valve B opens, for supplying liquid status to earth pillar.
The described structure of determining head water supply installation as shown in Figure 3, be made up of baffle plate 11, water supply run-down pipe 16, feed pipe 17, rising pipe 18 and interior rotary screw 32, determine the rectangular parallelepiped box that head water supply installation is the scarce end face of high 10cm, the height of baffle plate 11 is 8cm, baffle plate 11 is vertically fixed in rectangular parallelepiped box, by whole determine head water supply installation be divided into left and right two Room, bottom left room, Far Left is provided with apopore 35, and rising pipe 18 is connected with apopore 35; Bottom left room, right side is provided with water supply hole 34, and feed pipe 17 is connected with water supply hole 34; Be provided with spout hole 33 bottom right ventricle, water supply run-down pipe 16 is connected with spout hole 33; The rear wall determining head water supply installation has two holes passed through for iron rods 31, can be fixed on determine head water supply installation and determines on head fixed mount 19 by screwing interior rotary screw 32.
Described head liquid feed device of determining is made up of baffle plate 11, feed flow run-down pipe 12, feed pipe 13, drain pipe 14 and interior rotary screw, determine the rectangular parallelepiped box that head liquid feed device is the scarce end face of high 10cm, the height of baffle plate is 8cm, baffle plate is vertically fixed in rectangular parallelepiped box, by whole determine head liquid feed device be divided into left and right two Room, bottom left room, Far Left is provided with fluid hole, and drain pipe is connected with fluid hole; Bottom left room, right side is provided with for fluid apertures, and feed pipe is connected with for fluid apertures; Be provided with spout hole bottom right ventricle, feed flow run-down pipe is connected with spout hole; The rear wall determining head liquid feed device has two holes passed through for iron rods, can be fixed on determine head liquid feed device and determines on head fixed mount by screwing interior rotary screw.
Job step and the interpretation of a kind of absorption of the aerated zone soil based on strong adsorption fouling thing parameter determinator provided by the invention are as follows:
One, job step
1, sample is gathered
Gather the required sample of experiment, for subsequent use; Meanwhile, utilize cutting ring to get undisturbed sample, utilize oven dry-weight method to measure its dry density ρ '
d.
2, sample is prepared
Sample is air-dry, smash to pieces and sieve (aperture is 2mm aperture), for subsequent use.
3, moistening sample
Mix soil container middle berth one deck sieve air-dry after sample, use watering can uniform sprinkling; Then, repave one deck sample, then spill one deck water, in this approach that sample is all moistening, add a cover a vexed night afterwards, skin overlaps a polybag again and avoids evaporating and make moisture distribution again in the sample.
4, test specimens initial mass water percentage
Moistening good sample is fully mixed, different positions take a morsel soil sample load known quality little aluminium box in, do 5 parallel.Weigh in the balance heavy after put into 105 DEG C, baking oven dry 12h to constant weight, claim quality after cooling, calculated mass water percentage θ
m.
5, earth pillar is loaded
Breeze way poly (methyl methacrylate) plate with holes loads 10cm silica sand filtering layer; Earth pillar will be cushioned screw on web joint.Painting one deck glass cement very thin on the long limit of earth pillar inner ring and earth pillar outer shroud, inserts in earth pillar outer shroud with inner ring handle by earth pillar inner ring, and after inserting, earth pillar inner ring top is appointed and left 20cm height, is screwed on web joint by detachable earth pillar.With fixed screw, web joint and earth pillar support are fixed.At the in-built sample that bankets of detachable earth pillar, sample segment length 100cm, according to diameter D, length L and the dry density ρ ' of sample
d, initial aqueous rate θ
m, by formula m
filling=[(π R
2)/4] ρ '
d(1+ θ
m) calculate filling quality, the quality filling earth pillars such as segmentation (every layer of 5cm), interlayer hacking, the formation of running off between preventing layer.
6, saturated earth pillar
Head liquid feed device will be determined and determine head water supply installation and earth pillar lower inlet is connected, opening operation valve A, closed control valve B, with distilled water progressively saturated earth pillar from bottom to top, to get rid of the air in earth pillar, making the fully full water of earth pillar hole.7, Leaching Experiments
Saturated after earth pillar constant weight, continue determine head and supply water, after water flow velocity to be distilled is stable, closed control valve A, opens operation valve B, and (concentration is C to determine together solute standard working solution that head input now joins
enterg/L), start to collect out flow liquid, after input solute standard working solution a period of time (input time is according to decisions such as type of solutes, sample physical property, percolation flow velocities) simultaneously, open operation valve A, closed control valve B, continues to determine head and supplies water, use distilled water leaching.Record water supply flow Q.
8, water sample is gathered
In sampler place timing t
i(i=0,1,2,3 ...) sampling.
9, dry density and the factor of porosity of sample is measured
After sampling terminates, record experiment end time t
n; Then, draw inner ring to shake hands to shake hands with outer shroud, earth pillar is split, in earth pillar, utilizes cutting ring to get undisturbed sample, utilize weighting method after dried to measure its dry density ρ
dwith factor of porosity n.
10, soil sample is measured
After soil sample splits, layering soil sampling, measures the adsorbance of soil sample, thus determines that solute concentration is along journey curve.
Two, Experiment Result arranges
1, the average pore flow velocity of moisture in earth pillar is calculated
Formula (3) is utilized to calculate
In formula: υ
w-be the average pore flow velocity of moisture in earth pillar, cm/min;
V-be the average Darcy velocity in earth pillar, cm/min;
N-be the factor of porosity of sample in earth pillar, %/%.
2, the average migration velocity of earth pillar internal contamination thing is calculated
1. with the relative solute concentration C of each measuring point of section
i/ C
enterfor ordinate, be horizontal ordinate along journey x, draw solute concentration along journey curve.
2. C/C is read at solute concentration along on journey curve map
enterx when=0.5
0.5value.
3. formula (4) is utilized to calculate the average migration velocity of solute
υ
c=x
0.5/ t
n(4) in formula: υ
c-be the average migration velocity of solute in earth pillar, cm/min;
X
0.5-be from sample bottom surface to C/C
0the distance of=0.5 opposite position, cm;
T
n-for from add solute to experiment at the end of time of experiencing, min.
3, block characteristics is calculated
υ
w, υ
csubstitution formula (1), can calculate block characteristics R
d.
4, calculation of distribution coefficient
R
d, ρ
d, θ (sample satisfy water time, its water percentage equals its factor of porosity n) substitute into formula (2), can ask and calculate the partition factor K of solute in soil-aqueous systems
d.
Analyzer structure of the present invention is simple, easy to use, is with a wide range of applications.As being widely used in aeration zone hydrologic research, contribute to as instruments used for education principle and the scope of application thereof that student better understands strong adsorption fouling thing aerated zone soil absorption parameter; And can be used for measuring strong adsorption fouling thing aerated zone soil absorption parameter aborning, for farmland soil modifying provides research parameter, for strong adsorption fouling thing provides research parameter in the migration of aerated zone soil.
Claims (4)
1. the absorption of the aerated zone soil based on a strong adsorption fouling thing parameter determinator, it is characterized in that: comprise detachable earth pillar, breeze way, earth pillar stationary installation, sampler, determine head stationary installation, determine head water supply installation, determine head liquid feed device and water supply feed flow switching device shifter, soil sample is contained with in described detachable earth pillar, detachable earth pillar is by earth pillar inner ring, earth pillar outer shroud, inner ring handle and outer shroud handle composition, earth pillar inner ring cylindrically, its outer wall is provided with a vertical breach, the radian of breach is 0.3 ~ 0.7 π, inner ring handle is mounted on the top of earth pillar inner ring, earth pillar outer shroud is divided into inside and outside two-layer, its internal layer is the arc identical with the shape of the breach of earth pillar inner ring, its skin cylindrically, internal layer and skin are pasted fixing mutually, and the external diameter of outer field internal diameter and earth pillar inner ring matches, earth pillar inner ring sleeve is loaded on the inside of earth pillar outer shroud and can moves up and down in earth pillar outer shroud, and the breach of earth pillar inner ring is corresponding with the internal layer position of earth pillar outer shroud, the height of earth pillar inner ring is greater than earth pillar outer shroud, and outer shroud handle is installed on the middle part of earth pillar outer shroud, sampler is arranged at the top of earth pillar outer shroud for sampling from earth pillar, and sampler is positioned at the corresponding position of internal layer on earth pillar outer shroud, described breeze way is made up of plexi-glass tubular, gauze A, gauze B, poly (methyl methacrylate) plate with holes and silica sand filtering layer, wherein gauze A, silica sand filtering layer, poly (methyl methacrylate) plate with holes and gauze B are from top to bottom positioned in plexi-glass tubular successively, wherein gauze A contacts with soil sample, and poly (methyl methacrylate) plate with holes is positioned at 8 ~ 12cm place, top of the bottom surface of plexi-glass tubular, the internal diameter of plexi-glass tubular is identical with the internal diameter of earth pillar inner ring, and the bottom surface of plexi-glass tubular is provided with entrance, and porch is connected with input pipe, described earth pillar stationary installation is made up of web joint, fixed screw, rubber ring and base, wherein breeze way is fixed on base, the below of base is provided with support, web joint is installed on the junction between detachable earth pillar and breeze way, detachable earth pillar is fixed on the top of breeze way, rubber ring, between detachable earth pillar and breeze way, seals both junctions, be respectively equipped with four screw holes in the corresponding position at base and web joint four angles, web joint and base can be fixed together by fixed screw,
Described determine head stationary installation by determining head fixed mount and iron rod forms, iron rod is provided with 4 and is vertically arranged on to be determined on head fixed mount, determines head water supply installation, determines head liquid feed device and be all installed on and determine in head stationary installation and both upper-lower positions are adjustable; The bottom of determining head water supply installation is connected with rising pipe, the bottom of determining head liquid feed device is connected with drain pipe, rising pipe, drain pipe and input pipe are all connected with water supply feed flow switching device shifter, described water supply feed flow switching device shifter is made up of three-way connection, operation valve A and operation valve B, rising pipe, drain pipe and input pipe are all connected with three-way connection, rising pipe has operation valve A, drain pipe has operation valve B; Operation valve A opens, operation valve B closes, for earth pillar service position; Operation valve A closes, operation valve B opens, for supplying liquid status to earth pillar.
2. the absorption of the aerated zone soil based on strong adsorption fouling thing parameter determinator according to claim 1, it is characterized in that: described sampler is made up of copper pagoda and seal head, copper pagoda is contained in apart from 5cm place, earth pillar top, seal head has the screw thread matched with copper pagoda.
3. the absorption of the aerated zone soil based on strong adsorption fouling thing parameter determinator according to claim 1, it is characterized in that: described head water supply installation of determining is made up of baffle plate, water supply run-down pipe, feed pipe, rising pipe and interior rotary screw, determine the rectangular parallelepiped box that head water supply installation is the scarce end face of high 10cm, the height of baffle plate is 8cm, baffle plate is vertically fixed in rectangular parallelepiped box, by whole determine head water supply installation be divided into left and right two Room, bottom left room, Far Left is provided with apopore, and rising pipe is connected with apopore; Bottom left room, right side is provided with water supply hole, and feed pipe is connected with water supply hole; Be provided with spout hole bottom right ventricle, water supply run-down pipe is connected with spout hole; The rear wall determining head water supply installation has two holes passed through for iron rods, can be fixed on determine head water supply installation and determines on head fixed mount by screwing interior rotary screw.
4. the absorption of the aerated zone soil based on strong adsorption fouling thing parameter determinator according to claim 1, it is characterized in that: described head liquid feed device of determining is made up of baffle plate, feed flow run-down pipe, feed pipe, drain pipe and interior rotary screw, determine the rectangular parallelepiped box that head liquid feed device is the scarce end face of high 10cm, the height of baffle plate is 8cm, baffle plate is vertically fixed in rectangular parallelepiped box, by whole determine head liquid feed device be divided into left and right two Room, bottom left room, Far Left is provided with fluid hole, and drain pipe is connected with fluid hole; Bottom left room, right side is provided with for fluid apertures, and feed pipe is connected with for fluid apertures; Be provided with spout hole bottom right ventricle, feed flow run-down pipe is connected with spout hole; The rear wall determining head liquid feed device has two holes passed through for iron rods, can be fixed on determine head liquid feed device and determines on head fixed mount by screwing interior rotary screw.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510047572.XA CN104569353B (en) | 2015-01-29 | 2015-01-29 | Based on the aerated zone soil absorption parameter determinator of strong adsorption fouling thing |
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| CN201510047572.XA CN104569353B (en) | 2015-01-29 | 2015-01-29 | Based on the aerated zone soil absorption parameter determinator of strong adsorption fouling thing |
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