CN103100253A - Portable fast suction filtration device for sediment pore water - Google Patents
Portable fast suction filtration device for sediment pore water Download PDFInfo
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- CN103100253A CN103100253A CN 201110354495 CN201110354495A CN103100253A CN 103100253 A CN103100253 A CN 103100253A CN 201110354495 CN201110354495 CN 201110354495 CN 201110354495 A CN201110354495 A CN 201110354495A CN 103100253 A CN103100253 A CN 103100253A
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- suction filtration
- pore water
- sediment
- filtration device
- sediment pore
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Abstract
The invention discloses a portable fast wild suction filtration device for sediment pore water. The suction device comprises an inner casing, an outer casing, a filter head and a pumping system, and has a simple structure convenient operation. The invention uses a sealing rubber cap and a sealing rubber pad to guarantee tightness of the device in a pumping process, avoid contact with air in suction filtration of sediment pore water, maintain reducing conditions of the pore water, and ensure a measured substance concentration of the sediment pore water near to the level of in situ concentration of the sediment. The invention has advantages of simple structure, and easiness for carrying and operation, and solves the problem of fast suction filtration of sediment pore water.
Description
Technical field:
The present invention relates to the quick suction filtration device of a kind of portable deposit, can be used for the quick suction filtration of Sediment Pore Water.
Background technology:
Deposit is the important component part of water body, and Water-sediment interface is the complicated interface of solid liquid phase conversion in water environment, is also the zone that deposit and overlying water mass exchange are enlivened the most.Interface solubilised state/granulating material flux is that research water-deposit chemical/biological is learned the important content of circulation.In the bilayer/multilayered model of species flux, all emphasize in deposit top layer (diffusion layer) pore water mass transfer.Because the deposit oxidation-reduction potential is determining the boundary material form, the aerobic/anaerobic process transforms may cause the mutual conversion within very short time between material, such as ammonia nitrogen changes nitre nitrogen into, perhaps due to Fe
2+Change Fe into
3+, and then causing Fe bound phosphorus in deposit and ferrimanganic in conjunction with the conversion of attitude heavy metal, these processes will directly affect the pollutant levels in pore water, cause species flux research huge deviation to occur.The diffusion layer material concentration distribution that how accurately to obtain under the original position state is the basis that flux calculates and studies.
Accurately obtain fast the deposit interstitial water and mainly comprise two parts work, first is for obtaining pore water, and second portion is the suction filtration pore water.At present, at the Redox Condition of the indoor control sediment sample/pore water suction filtration of having ready conditions, but still lack ripe method for the field condition in-situ sampling,
Summary of the invention:
This suction filtration device is combined by inside and outside two different plastic tubes of thickness, forms a cover suction filtration system in conjunction with battery and minipump, can complete the quick suction filtration of open-air deposit interstitial water.
This suction filtration device mainly consists of the following components: (1) sealing rubber cap: be used for the fixing of miillpore filter and outer tube, guarantee the sealing of whole suction filtration device; (2) inner and outer pipes: agent set is comprised of outer tube and inner tube, and there is the interval in interior length of tube lower than outer tube 2-3 millimeter between inner and outer pipes, and when guaranteeing to vacuumize, whole device air-flow is unimpeded; (3) sealing rubber pad: the rubber blanket of the foot of suction filtration device for changing, the suitable rubber of a built-in block size, the sealing in the time of can guaranteeing to bleed on the one hand, in the time of can guaranteeing to obtain filtered fluid on the one hand, syringe needle can pass; (4) aspirating hole: be an aspirating hole on the side of plug, external vavuum pump is used for vacuumizing of whole device.
The use procedure of this suction filtration device is: after the horizontal harvester of deposit interstitial water is obtained Sediment Pore Water, with filter insert-seal rubber cap, by filter, the horizontal harvester of deposit interstitial water is connected with the suction filtration device, then starting minipump vacuumizes, in the horizontal harvester of deposit interstitial water, the complete suction filtration of solution is after inner tube, prick sealing rubber pad with another band needle applicator, and extracted and filter pore water, be transferred to the portable example container stored refrigerated.Whole process can guarantee the contact oxygen that pore water is minimum, and process operation is simple, rapidly.
The characteristics of this suction filtration device are: suction filtration device top is fixed with sealing rubber cap, with micropore filter insert-seal rubber cap, after guaranteeing whole suction filtration device and the Sediment Pore Water collector being connected, avoid the pore water ingress of air in the process of unlatching vavuum pump suction filtration, avoid the Sediment Pore Water redox not change; Interior ring length is lower than the outer shroud height, and in vacuum, inner and outer ring forms linker, guarantees that Sediment Pore Water is drawn into inner tube; Sealing rubber pad is comprised of nut and rubber blanket, and in the vavuum pump pumping process, rubber blanket can guarantee the sealing of whole system, and suction filtration is complete, and syringe was pricked rubber blanket and extracted filtrate, after repeatedly using, can change rubber blanket, guarantees the sealing of suction filtration system.
Description of drawings:
Accompanying drawing 1 is suction filtration device longitudinal sectional view (mm of unit).
Accompanying drawing 2 is filter place's partial enlarged drawing (mm of unit).
Accompanying drawing 3 is plug and aspirating hole cutaway view, i.e. A-A in accompanying drawing 1.(mm of unit).
Accompanying drawing 4 is the filter cutaway view, i.e. B-B (mm of unit) in accompanying drawing 1.
In figure: 1, the horizontal harvester of Sediment Pore Water; 2, filter; 3, sealing rubber cap; 4, nut; 5, sealing rubber pad; 6, vavuum pump; 7, battery.
The specific embodiment:
Embodiments of the invention:
1 suction filtration contrast experiment
The present invention is better than traditional suction filtration device for checking, two kinds of suction filtration mode contrast experiments of design same deposition thing pore water.The experiment deposit that gathers is taken from northern canal lower reache, after deposit is obtained, extracts immediately pore water, and portion is used apparatus of the present invention suction filtration immediately, and another part adopts laboratory tradition suction filtration device suction filtration.Obtain respectively to analyze after suction filtration liquid, analysis indexes comprises active reaction phosphorus (SRP), total phosphorus (TP), iron (Fe), manganese (Mn).
(1) suction filtration process
This experiment obtains sedimentary column at northern canal lower reache, uses suction filtration device of the present invention quick suction filtration at the scene, and suction filtration liquid is stored in car refrigerator, can guarantee the reducing condition of pore water, and the concentration of each material is closer to the true diffusion flux of deposit.With traditional suction filtration device, Sediment Pore Water must be taken to the laboratory test chamber and carry out.At least 2 hours distance rears can suction filtration to the laboratory test chamber from sampled point, and the disturbance meeting in transportation increases pore water and extraneous touch opportunity, changes the redox state of pore water, makes pore water become oxidation state from reduction-state.
(2) analysis indexes
Repeat the contrast experiment and find, in suction filtration device acquisition pore water of the present invention, active reaction phosphorus (SRP), iron (Fe), manganese (Mn) content are higher than traditional suction filtration device pore water.Two kinds of suction filtration modes of total phosphorus (TP) content are basically identical.Reason may be suction filtration device of the present invention suction filtration at the scene, reduces the chance of pore water ingress of air, and pore water keeps reducing condition, and in pore water, material concentration keeps deposit original position state substantially.And traditional suction filtration device has increased the touch opportunity of hole water and air, has changed the redox state of pore water, causes that in pore water, material concentration changes.
The contrast experiment shows, apparatus of the present invention are easy to operate, can realize the quick suction filtration of the on-the-spot pore water of sediment sampling.
Claims (6)
1. an invention is used for the quick suction filtration device of countryside portable Sediment Pore Water, and it is characterized in that: rubber seal cap and rubber seal plug can guarantee the sealing of whole device in vacuum.
2. the present invention is simple in structure, is easy to carry.Mainly formed by nutsch filter, vavuum pump and battery.
3. require according to right 1 that in described nutsch filter, length of tube is less than outer tube, to guarantee the circulation of air of whole device in vacuum.
4. require described rubber seal plug to regularly replace according to right 1, to guarantee the sealing of whole system in vacuum.
5. require the nutsch filter must be less according to right 2, length be easy to carry to be advisable less than 10cm.
6. requiring to form the battery of suction filtration devices and vavuum pump according to right 2 answers small volume, weight lighter.Battery is advisable to be lighter than 5kg, and vavuum pump is advisable with the barrier film minipump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110354495 CN103100253A (en) | 2011-11-10 | 2011-11-10 | Portable fast suction filtration device for sediment pore water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110354495 CN103100253A (en) | 2011-11-10 | 2011-11-10 | Portable fast suction filtration device for sediment pore water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103100253A true CN103100253A (en) | 2013-05-15 |
Family
ID=48308653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110354495 Pending CN103100253A (en) | 2011-11-10 | 2011-11-10 | Portable fast suction filtration device for sediment pore water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103100253A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165784A (en) * | 2014-07-29 | 2014-11-26 | 辽宁省水文局 | Portable cantilever continuous water quality sampler |
| CN108152082A (en) * | 2017-12-14 | 2018-06-12 | 青岛海洋地质研究所 | A kind of Sediment Pore Water and dissolved gas harvester |
-
2011
- 2011-11-10 CN CN 201110354495 patent/CN103100253A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165784A (en) * | 2014-07-29 | 2014-11-26 | 辽宁省水文局 | Portable cantilever continuous water quality sampler |
| CN108152082A (en) * | 2017-12-14 | 2018-06-12 | 青岛海洋地质研究所 | A kind of Sediment Pore Water and dissolved gas harvester |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130515 |