CN109701393A - Underground hydrocolloid original position tangential flow ultra-filtration unit - Google Patents
Underground hydrocolloid original position tangential flow ultra-filtration unit Download PDFInfo
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- CN109701393A CN109701393A CN201910000254.6A CN201910000254A CN109701393A CN 109701393 A CN109701393 A CN 109701393A CN 201910000254 A CN201910000254 A CN 201910000254A CN 109701393 A CN109701393 A CN 109701393A
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Abstract
The invention discloses underground hydrocolloid original position tangential flow ultra-filtration units, including ultra filtration unit, pre-flock unit, sampling unit and control unit, described control unit uses inert gas as driving, underground hydrocolloid sample is driven into sampling unit, control unit is mainly used for the time that process control holds the unlatching of bottle, closing, and holds N in bottle according to depth selection setting2Pressure, the device devises one kind " bamboo slip type " cross-flow ultrafiltration unit and is assembled with underground water sampler, cross-flow ultrafiltration unit is entered using inert gas pressure driving water sample and isolates colloid therein, colloid taking-up after separation in situ can be used to lab analysis, solve the problems, such as to separate wherein colloid after underground water taking-up easily affected by environment.The device of the invention can be widely applied to the sampling and separation of underground hydrocolloid, influences research to the migration of underground pollutant for colloid in Environmental security field and provides robust techniques approach.
Description
Technical field
The present invention relates to belong to environment and geotechnical engineering field, specifically underground hydrocolloid original position tangential flow ultra-filtration unit.
Background technique
Underground hydrocolloid is the general name of various suspended matter solid granulates in underground water, and referring generally to size is 1nm~1000nm
Suspended particulate substance.Underground hydrocolloid can generate absorption to heavy metal element in water and radioactive pollution nucleic and act on carrier band,
So that pollutant flows in the aqueous medium of underground with colloidal solid, pollutant is migrated in underground water and generates important shadow
It rings.Influence for Study of The Underground hydrocolloid to contaminant transportation, it is necessary first to which accurate characterization, including colloid are carried out to water-borne glue body
Content, composition and particle diameter distribution etc., and the top priority characterized is that colloid micro in water is enriched with and is separated.In surface water
Cross-flow ultrafiltration isolation technics is generally used in the colloid concentration and separation of sample, relative to traditional pressure filtration isolation technics,
Cross-flow ultrafiltration isolation technics can avoid filter membrane blockage problem substantially, to increase filter efficiency, promote disintegrate-quality.But
Colloid is separated with tangential flow ultra-filtration unit if underground water is sampled to after earth's surface, can be made because of the variation of environmental pressure and atmosphere
It changes at the composition characteristic of colloid, and then influences the understanding to underground water gel characteristics.The thinking for solving the problems, such as this is to set
A kind of tangential flow ultra-filtration unit that can separate underground water colloid in situ is counted, realizes and the original position of underground water colloid is separated, in turn
Accurate characterization for underground hydrocolloid provides reliable guarantee, has larger learning value.
Summary of the invention
The purpose of the present invention is to provide a kind of underground hydrocolloid original position tangential flow ultra-filtration units, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the invention provides the following technical scheme:
A kind of underground hydrocolloid original position tangential flow ultra-filtration unit, including ultra filtration unit, pre-flock unit, sampling unit and control are single
Member, described control unit are driven for adjusting inert gas, and underground hydrocolloid sample is made to enter sampling unit, the pre-flock
Unit is used to remove the bulky grain in underground water colloid sample greater than 0.45 μm, and described control unit is located at earth's surface, drives with holding
That takes offence body holds bottle connection, and described control unit is mainly used for process control and holds the unlatching of bottle, the time of closing and duration,
And N in bottle is held according to depth selection setting2Pressure, the ultra filtration unit on the basis of traditional cross-flow ultrafiltration principle,
Design has one inlet stream ultra filtration unit in ultra filtration unit, and ultrafiltration membrane, " bamboo slip type " more slipstreams are provided in ultra filtration unit
Ultra filtration unit is will to form side by side " snakelike " ultra filtration unit by a one inlet stream ultra filtration unit, upper one inlet stream ultra filtration unit
Ultrafiltrate outlet is connect with the ultrafiltrate import of next one inlet stream ultra filtration unit, the trapped fluid of upper one inlet stream ultra filtration unit
Outlet is connect with the injection port of next one inlet stream ultra filtration unit, flat more ultra filtration units is formed with this, then by plate
" snakelike " ultra filtration unit of shape is rolled into " bamboo slip used for writing on during ancient times " shape, forms " bamboo slip type " more cross-flow ultrafiltration units, finally forms ultra filtration unit.
As a further solution of the present invention: the sampling unit is for obtaining underground hydrocolloid sample.
As a further solution of the present invention: as further scheme of the invention: the driving gas is specially height
Press N2。
As a further solution of the present invention: the sampling unit uses N2Displaced type depthkeeping samples mentality of designing, sampling
Sample jar is provided in unit.
As a further solution of the present invention: the open and close for holding bottle are by surface control unit process control.
As a further solution of the present invention: the pre-flock unit uses circular plate nuclepore membrane filter.
Compared with prior art, it is cut the beneficial effects of the present invention are: entering by using inert gas pressure driving water sample
To stream ultra filtration unit and colloid therein is isolated, the colloid taking-up after separation in situ can be used to lab analysis, solve
Underground water separates the problem that wherein colloid is easily affected by environment after taking out, by using " bamboo slip type " more cross-flow ultrafiltration units,
Can be in limited volumetric spaces, extension ultrafiltration path makes solution as small as possible as far as possible to improve the separative efficiency of colloid
Space in flow through and be more likely to long distance, increase the contact area of solution and filter membrane, to improve ultrafiltration efficiency.
Detailed description of the invention
Fig. 1 is the cross-flow ultrafiltration system global structure in situ of underground hydrocolloid original position tangential flow ultra-filtration unit.
Fig. 2 is one inlet stream ultra filtration unit design drawing in the tangential flow ultra-filtration unit of underground hydrocolloid original position.
Fig. 3 is " bamboo slip type " more cross-flow ultrafiltration cell floor plans in the tangential flow ultra-filtration unit of underground hydrocolloid original position.
Fig. 4 is " bamboo slip type " more cross-flow ultrafiltration unit three-dimensional figures in the tangential flow ultra-filtration unit of underground hydrocolloid original position.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~4, in the embodiment of the present invention, a kind of underground hydrocolloid original position tangential flow ultra-filtration unit, including ultrafiltration
Unit 1, pre-flock unit 2, sampling unit 3 and control unit, described control unit are driven for adjusting inert gas, make ground
Lower hydrocolloid sample enters sampling unit 3, and the sampling unit 3 is used for obtaining underground hydrocolloid sample, the pre-flock unit 2
It is greater than 0.45 μm of bulky grain in removal underground water colloid sample, described control unit is located at earth's surface, and holds driving gas
Hold bottle connection, the driving gas is specially high pressure N2, described control unit is mainly used for process control and holds opening for bottle
The time open, closed and duration, and N in bottle is held according to depth selection setting2Pressure, the sampling unit 3 use N2Displacement
Formula depthkeeping samples mentality of designing, is provided with sample jar in sampling unit 3, the open and close for holding bottle are by surface control list
Metaprogram control, the pre-flock unit 2 use circular plate nuclepore membrane filter, and the ultra filtration unit 1 is traditional tangential
On the basis of flowing ultrafiltration principle, design has one inlet stream ultra filtration unit in ultra filtration unit 1, is provided with ultrafiltration membrane in ultra filtration unit 1,
" bamboo slip type " more cross-flow ultrafiltration units are will to form side by side " snakelike " ultra filtration unit by a one inlet stream ultra filtration unit, on
The ultrafiltrate outlet of one one inlet stream ultra filtration unit is connect with the ultrafiltrate import of next one inlet stream ultra filtration unit, and upper one singly cuts
It exports to the trapped fluid of stream ultra filtration unit and is connect with the injection port of next one inlet stream ultra filtration unit, formed with this flat more
Then flat " snakelike " ultra filtration unit is rolled into " bamboo slip used for writing on during ancient times " shape by ultra filtration unit, form " bamboo slip type " more cross-flow ultrafiltration lists
Member, it is final to form ultra filtration unit 1, when using the underground hydrocolloid original position tangential flow ultra-filtration unit, N is full of in sample jar2, arrive
Up to after certain depth, N is emptied2, underground water colloidal sample opens sampling valve full of sample jar automatically under hydraulic pressure, fills again later
N2, driving sample arrival pre-flock unit 2, when underground water colloidal sample is out-of-date along ultrafiltration membrane surface slipstream, part is small in water sample
Penetrate ultrafiltration membrane in the small molecule solution of ultrafiltration retaining molecular weight, referred to as ultrafiltrate, and colloidal particle is still flowed with fluid and
It is gradually concentrated, this part is referred to as trapped fluid, need to be by sample one since ground in-situ ultrafiltration does not have the condition of loop ultrafiltration
Secondary property is directly sent to ground in the form of trapped fluid and ultrafiltrate by ultra filtration unit 1, super by using " bamboo slip type " more slipstreams
Unit is filtered, can be in limited volumetric spaces, extension ultrafiltration path makes solution exist as far as possible to improve the separative efficiency of colloid
It is flowed through in space as small as possible and is more likely to long distance, increase the contact area of solution and filter membrane, so that ultrafiltration efficiency is improved,
Underground hydrocolloid is filtered inside unit into after crossing the bulky grain that pre-flock unit 2 is gone in water removal greater than 0.45 μm, into ultra filtration unit 1
Film tangential flow, realize the in-situ enrichment of colloid with separate after trapped fluid and ultrafiltrate be transported to earth's surface, so as to realize
The separation in situ of underground hydrocolloid.
The working principle of the invention is: when using the underground hydrocolloid original position tangential flow ultra-filtration unit, when underground water colloid
Sample is out-of-date along ultrafiltration membrane surface slipstream, partially penetrates ultrafiltration less than the small molecule solution of ultrafiltration retaining molecular weight in water sample
Film, referred to as ultrafiltrate, and colloidal particle is still flowed with fluid and is gradually concentrated, this part is referred to as trapped fluid, due to underground
Ultrafiltration in situ does not have the condition of loop ultrafiltration, sample need to disposably be passed through to ultra filtration unit 1, directly with trapped fluid and ultrafiltrate
Form is sent to ground, by using " bamboo slip type " more cross-flow ultrafiltration units, can extend as far as possible in limited volumetric spaces
Ultrafiltration path flows through solution in space as small as possible and is more likely to long distance to improve the separative efficiency of colloid, increases
The contact area of solution and filter membrane, to improve ultrafiltration efficiency, underground hydrocolloid goes to be greater than 0.45 in water removal into pre-flock unit 2 is crossed
μm bulky grain after, into ultra filtration unit 1 inside the unit filter membrane tangential flow, realize the in-situ enrichment of colloid with separate after general
Trapped fluid and ultrafiltrate are transported to earth's surface, so as to realize the separation in situ of underground hydrocolloid.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (6)
1. a kind of underground hydrocolloid original position tangential flow ultra-filtration unit, it is characterised in that: including ultra filtration unit (1), pre-flock unit
(2), sampling unit (3) and control unit, described control unit are driven for adjusting inert gas, make underground hydrocolloid sample
This enters sampling unit (3), and the pre-flock unit (2) is used to remove the bulky grain in underground water colloid sample greater than 0.45 μm,
Described control unit is located at earth's surface, connect with the bottle that holds for holding driving gas, described control unit is mainly used for process control
Time and the duration of unlatching, the closing of bottle are held, and N in bottle is held according to depth selection setting2Pressure, the ultra filtration unit
(1) on the basis of traditional cross-flow ultrafiltration principle, design has one inlet stream ultra filtration unit, ultra filtration unit in ultra filtration unit (1)
(1) it is provided with ultrafiltration membrane in, " bamboo slip type " more cross-flow ultrafiltration units are will be by arranged side by side group of a one inlet stream ultra filtration unit
At " snakelike " ultra filtration unit, the ultrafiltration of the ultrafiltrate outlet and next one inlet stream ultra filtration unit of upper one inlet stream ultra filtration unit
Liquid import connection, the trapped fluid outlet of upper one inlet stream ultra filtration unit and the injection port of next one inlet stream ultra filtration unit connect
It connects, flat more ultra filtration units is formed with this, flat " snakelike " ultra filtration unit is then rolled into " bamboo slip used for writing on during ancient times " shape, form
" bamboo slip type " more cross-flow ultrafiltration units finally form ultra filtration unit (1).
2. underground hydrocolloid according to claim 1 original position tangential flow ultra-filtration unit, it is characterised in that: the sampling unit
(3) for obtaining underground hydrocolloid sample.
3. underground hydrocolloid according to claim 1 original position tangential flow ultra-filtration unit, it is characterised in that: the driving gas
Specially high pressure N2。
4. underground hydrocolloid according to claim 1 original position tangential flow ultra-filtration unit, it is characterised in that: the sampling unit
(3) N is used2Displaced type depthkeeping samples mentality of designing, is provided with sample jar in sampling unit (3).
5. underground hydrocolloid according to claim 1 original position tangential flow ultra-filtration unit, it is characterised in that: the bottle that holds
It opens and closes by surface control unit process control.
6. underground hydrocolloid according to claim 1 original position tangential flow ultra-filtration unit, it is characterised in that: the pre-flock unit
(2) circular plate nuclepore membrane filter is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910000254.6A CN109701393B (en) | 2019-01-01 | 2019-01-01 | Underground water colloid in-situ tangential flow ultrafiltration device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910000254.6A CN109701393B (en) | 2019-01-01 | 2019-01-01 | Underground water colloid in-situ tangential flow ultrafiltration device |
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| CN109701393A true CN109701393A (en) | 2019-05-03 |
| CN109701393B CN109701393B (en) | 2021-03-02 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110538506A (en) * | 2019-09-25 | 2019-12-06 | 浙江海洋大学 | transparent soil pore liquid recovery device and recovery method |
| CN114307651A (en) * | 2021-11-23 | 2022-04-12 | 中国辐射防护研究院 | Device and method for separating adsorbed radionuclide colloids with different particle sizes |
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| CN110538506A (en) * | 2019-09-25 | 2019-12-06 | 浙江海洋大学 | transparent soil pore liquid recovery device and recovery method |
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| CN114307651A (en) * | 2021-11-23 | 2022-04-12 | 中国辐射防护研究院 | Device and method for separating adsorbed radionuclide colloids with different particle sizes |
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| CN109701393B (en) | 2021-03-02 |
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