CN216771155U - Deep water type sediment interstitial water sampler - Google Patents
Deep water type sediment interstitial water sampler Download PDFInfo
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- CN216771155U CN216771155U CN202220134795.5U CN202220134795U CN216771155U CN 216771155 U CN216771155 U CN 216771155U CN 202220134795 U CN202220134795 U CN 202220134795U CN 216771155 U CN216771155 U CN 216771155U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 113
- 239000013049 sediment Substances 0.000 title claims abstract description 63
- 238000005070 sampling Methods 0.000 claims abstract description 61
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000012528 membrane Substances 0.000 claims abstract description 22
- 230000001681 protective effect Effects 0.000 claims abstract description 22
- 229910052742 iron Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 238000005452 bending Methods 0.000 claims abstract description 8
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
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- 238000011065 in-situ storage Methods 0.000 abstract description 8
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- 239000003344 environmental pollutant Substances 0.000 description 10
- 231100000719 pollutant Toxicity 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 6
- 230000001066 destructive effect Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
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- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
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- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
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Abstract
The utility model relates to the technical field of in-situ sampling of sediments, in particular to a deep water type sediment interstitial water sampler, which comprises a sampling area consisting of a plurality of sampling cells, wherein protective shells are respectively arranged above, on two sides, below and on the back of the sampling area, a triangular column is arranged on the lower part of the protective shell positioned below the sampling area, a filtering membrane is covered on the front surface of the sampling area, a metal iron rod is fixed on the top of the protective shell positioned on the back of the sampling area, the metal iron rod comprises a horizontal section and a bending section, the horizontal section is connected with the protective shell, and the bending section is bent downwards; the horizontal section is provided with a first connecting rope which penetrates through a rope penetrating hole of the impact hammer, the impact hammer is further provided with a plurality of uniformly distributed connecting holes, and a second connecting rope penetrates through the connecting holes. The sampler has wide application range and simple operation; the manufacturing process is simple and is suitable for delivery under the condition of deep water.
Description
Technical Field
The utility model relates to the technical field of sediment in-situ sampling, in particular to a sediment interstitial water sampler.
Background
In recent years, lakes in China are seriously polluted, water body sediments are a gathering place of water body pollutants, the concentration of the pollutants is often multiple times of that in a water body, and the pollutants are easily released to an overlying water body for the second time under specific conditions. Sediment interstitial water is an important parameter affecting the earth circulation of various organisms, and sediment substances release various nutrients into the interstitial water, and the composition of the interstitial water changes with increasing depth. The change reflects the rate and stoichiometric relation of mineralization reaction, and the study on the dynamics of substances in deep water sediments is helpful for understanding the behavior of the substances in the whole water environment system. The water in the clearance of the sediment is taken as a dissolved part and is a sensitive index reflecting the change of the sediment. The method is used for obtaining the content and vertical distribution information of pollutants in interstitial water, and is important data for evaluating the pollution level and quantitatively estimating the pollution flux.
At present, methods for collecting interstitial water mainly include centrifugation, squeezing, osmosis, and the like.
A centrifugal method: collecting columnar sediments by using a box type sampler, dividing the sediments in a nitrogen box, putting the sediments with certain thickness into a centrifugal tube, covering a cover tightly, taking out the sediments from the nitrogen box, centrifuging the sediments for 20min at 5000r/min, and filtering supernate in the nitrogen box after centrifugation to prepare interstitial water.
And (3) a penetration method: the permeator consists of organic glass plates, wherein the cavities are connected together and are covered with filter membranes, and organic glass sheets with gaps are used for connecting the cavities. The membrane and the window are fixed to the dialyzer main body with stainless steel screws. Before the insertion of the deposit, the dialyser is placed in deionized water and flushed with nitrogen.
The traditional interstitial water collection methods are all used for indirectly extracting interstitial water, different treatment methods or even the same treatment method adopts different treatment parameters, the results are possibly different, the finally collected water sample is different from the actual interstitial water, the in-situ interstitial water cannot be directly collected, in the sampling process, the original structure of the sediment is inevitably damaged, the sample is easily exposed in the air, the property of the sediment is changed, and the deviation of the treatment data is caused.
The traditional sampler is used for acquiring the information of the pollutants in the interstitial water, and a destructive sampling method is generally adopted, namely, sediment is directly taken out from the water bottom, and an interstitial water sample is obtained through a centrifugal or squeezing method and is used for analyzing the content of the pollutants. The sediment is in a reducing environment for a long time at the water bottom, and after the sediment is taken out from the water bottom, the sediment is directly contacted and oxidized with air, so that the property is greatly changed, and the content distribution of ions in interstitial water is influenced. Therefore, the pollutant content information obtained by adopting a destructive method has great uncertainty, the substances contained in the water and the influence and exchange condition of the substances on the water pollution cannot be detected, and the method for directly collecting interstitial water in situ from sediments is a scientific method. The existing sediment gap water sampler is difficult to solve the problem of putting in deep water, and a device for putting in deep water is not provided.
In view of this, the utility model provides a deep water type sediment water sampling device which is simple in structure, convenient to use and capable of working in situ.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a deep-water type sediment interstitial water sampler which can accurately acquire deep-water sediment interstitial water of more than 10m and is suitable for deep-water sediment pollution research; and solves the delivery problem of the device under deep water.
Specifically, the application provides the following technical scheme:
the deep water type sediment interstitial water sampler comprises
A deepwater type sediment interstitial water sampler comprises a sampling area consisting of a plurality of sampling cells, wherein protective housings are arranged above, on two sides, below and on the back of the sampling area, a triangular prism is arranged on the lower portion of each protective housing below the sampling area, a filtering membrane covers the front of the sampling area, a metal iron rod is fixed at the top of each protective housing on the back of the sampling area, the metal iron rod comprises a horizontal section and a bending section, the horizontal section is connected with the protective housings, and the bending sections are bent downwards; the horizontal section is provided with a first connecting rope which penetrates through a rope penetrating hole of the impact hammer, the impact hammer is further provided with a plurality of uniformly distributed connecting holes, and a second connecting rope penetrates through the connecting holes.
Furthermore, the lower bottom surface of the triangular column is an inclined plane, and the section of the whole triangular column is in an inverted triangle shape.
Furthermore, the inside of the small sampling chamber is inclined downwards at a certain gradient.
Further, the horizontal length x vertical width x depth of the sampling area is 100mm x 50mm x 220mm, the horizontal length x vertical width x depth of the sampling cells is 80mm x 40mm x 10mm, and a total of 20 sampling cells are provided in a vertical arrangement of 1 column and 20 rows.
Further, the protective housing is of a steel structure.
Furthermore, a plurality of nut grooves are formed in the protective shell above, on two sides of and below the sampling area and used for fixing the filtering membrane.
Furthermore, the number of the metal iron rods is two, and the two metal iron rods are parallel to each other.
Compared with the prior art, the deep water type sediment interstitial water sampler has the following beneficial effects:
1. realizing in-situ collection: the traditional sampler is used for acquiring the information of the pollutants in the interstitial water, and a destructive sampling method is generally adopted, namely, sediment is directly taken out from the water bottom, and an interstitial water sample is obtained through a centrifugal or squeezing method and is used for analyzing the content of the pollutants. The sediment is in a reducing environment for a long time at the water bottom, and after the sediment is taken out from the water bottom, the sediment is directly contacted and oxidized with air, so that the property is greatly changed, and the content distribution of ions in interstitial water is influenced. Therefore, the pollutant content information obtained by adopting a destructive method has great uncertainty, the substances contained in the water and the influence and exchange condition of the substances on the water pollution cannot be detected, and the method for directly collecting interstitial water in situ from sediments is a scientific method. The sampler provided by the utility model can directly adopt sediment interstitial water to realize in-situ collection, ensure the authenticity of the obtained interstitial water, reduce the error of related indexes caused by dislocation, and ensure more rigorous experimental data.
2. The applicable water body is wider: the traditional sampler can only collect partial interstitial water in sediments in a shallow water area, and the sediment interstitial water is difficult to collect under the condition of deep water. Although some deep water type sampling devices have been developed at present, the devices have the disadvantages of complex shape, troublesome use and the like to different degrees; in addition, the existing sediment interstitial water sampler is difficult to solve the problem of putting in deep water, and a device for putting in deep water is not provided. The sampler has simple design, convenient operation and strong applicability, and the triangular column at the lower layer is beneficial to the device to insert sediment; more importantly, the device for throwing in deep water provides a solution for collecting interstitial water of sediment under the deep water condition.
The deep water type sediment interstitial water sampler of the utility model is further explained with the attached drawings.
Drawings
FIG. 1 is a schematic front view of a deepwater sediment interstitial water sampler of the present invention;
FIG. 2 is a schematic side view of a deepwater sediment interstitial water sampler of the present invention;
fig. 3 is a top view of the impact hammer of the deepwater sediment interstitial water sampler of the utility model.
Wherein, 1-protective shell; 2-nut grooves; 3-sampling the cell; 4-triangular column; 5-a filtration membrane; 6-a metallic iron rod; 7-a first connecting rope; 8-impact hammer; 9-a second connecting rope; 10-stringing holes; 11-connecting hole.
Detailed Description
As shown in fig. 1-3, a deep water type sediment interstitial water sampler comprises a sampling area consisting of a plurality of sampling chambers 3, wherein protective shells 1 are arranged above, on two sides, below and on the back of the sampling area, triangular columns 4 are arranged at the lower part of the protective shell 1 positioned below the sampling area, and a filtering membrane 5 is covered on the front surface of the sampling area and can filter large-particle-size impurities in interstitial water; a metal iron rod 6 is fixed at the top of the protective shell 1 positioned at the back of the sampling area, the metal iron rod 6 comprises a horizontal section and a bending section, the horizontal section is connected with the protective shell 1, and the bending section is bent downwards; the horizontal segment is provided with a first connecting rope 7, the first connecting rope 7 penetrates through a rope penetrating hole 10 of the impact hammer 8, the impact hammer 8 is further provided with 4 connecting holes 11 which are uniformly distributed, the connecting holes 11 are penetrated with second connecting ropes 9, and the sampler can be placed downwards through the second connecting ropes.
The second connecting rope 9 comprises four auxiliary ropes, the auxiliary ropes penetrate through connecting holes in the impact hammer and are used as devices for fixing the impact hammer, and the four auxiliary ropes are finally converged into the second connecting rope.
When the sampler reaches the surface of the sediment, the impact hammer is operated through the first connecting rope to smash the sampler into the sediment. The lower bottom surface of the triangular column 4 is an inclined plane, and the section of the whole triangular column is in an inverted triangle shape, so that the sampler can be easily inserted into sediments.
The horizontal length x vertical width x depth of the sampling area is 100mm x 50mm x 220mm, the horizontal length x vertical width x depth of the sampling cells 3 is 80mm x 40mm x 10mm, and 20 sampling cells are provided in total and are vertically arranged in 1 column and 20 rows.
The filtering membrane adopts PVDF membrane with the aperture of 0.45 mu m, and the permeable membrane utilizes the equilibrium permeation principle to measure ions in interstitial water. When installing filtration membrane, add one deck silica gel pad on nut groove 2 earlier, install filtration membrane again, guarantee that filtration membrane can not suffer destruction when the installation. The silica gel pad and the filtering membrane are compacted by the pressing strips made of polypropylene materials, so that the silica gel pad and the filtering membrane are tightly attached to the front of the sampling area, each sampling cell forms a relatively independent environment, the samples are prevented from mutually bouncing up and interfering, and the spatial position information of ions in interstitial water is better provided.
The inside of the sampling small chamber 3 is inclined downwards at a certain gradient and is a storage place of gap water. Because the water is downward with a certain gradient, the gap water can flow to the bottom along the groove, and the inflowing gap water is prevented from flowing back to the sediment.
The number of the metal iron rods 6 is two, and the two metal iron rods 6 are parallel to each other. The function of the sampler is to balance the sampler, and the center of gravity of the whole sampler can be found on a metal iron rod.
The protective shell 1 is made of stainless steel to prevent the sampler from being deformed and damaged due to the fact that hydrostatic pressure in deep water presses the sampler. And a plurality of nut grooves 2 are arranged on the protective shell 1 above, at two sides and below the sampling area and used for fixing the filtering membrane.
The triangular column and the metal iron rod are made of stainless steel, and the sampling small chamber is made of polyethylene or organic glass.
During the use, transfer this sample thief along the surface of water through first connection rope, when reacing the deposit layer, pass the rope-threading hole in the jump bit with first connection rope, the jump bit is transferred to operation second connection rope, treats when the jump bit reachs the metal iron set, and the rope is connected to the luffing motion second, makes the jump bit can impact the metal iron set downwards, makes whole sampling device can go deep into the deposit. The operation is repeated several times until the entire device is completely inserted into the deposit layer. After standing for 1-2 days, extracting the device after effective solutes in the sediment interstitial water and pure water in the through groove reach diffusion balance. Then tear off the filtration membrane in the positive outside and get rid of the silt on surface, avoid the sampling to pollute, then stab filtration membrane through the sampling rifle and sample to carry out the analysis to the sampling.
According to the deep water type sediment interstitial water sampler, not only can interstitial water of deep water sediment be sampled, but also the sampler is integrally put downwards, so that sampling becomes simple and controllable.
The principle of the sampling method of the deep water type sediment gap water sampler is Fick's law, namely, a sampling cell is separated from sediment by a permeable membrane, and after ions in the sampling cell solution and the ions in the gap water reach balance through diffusion of the permeable membrane, the sampling cell solution sample is analyzed, so that the information of the gap water is obtained.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (7)
1. The utility model provides a deep water type deposit clearance water sampler which characterized in that: the sampling device comprises a sampling area consisting of a plurality of sampling cells (3), wherein protective shells (1) are arranged above, on two sides, below and on the back of the sampling area, triangular columns (4) are arranged on the lower portions of the protective shells (1) below the sampling area, a filtering membrane (5) covers the front of the sampling area, a metal iron rod (6) is fixed at the top of each protective shell (1) on the back of the sampling area, each metal iron rod (6) comprises a horizontal section and a bending section, the horizontal section is connected with the protective shells (1), and the bending sections are bent downwards; the horizontal section is provided with a first connecting rope (7), the first connecting rope (7) penetrates through a rope penetrating hole (10) of the impact hammer (8), the impact hammer (8) is further provided with a plurality of uniformly distributed connecting holes (11), and a second connecting rope (9) penetrates through the connecting holes (11).
2. The deep water type sediment interstitial water sampler of claim 1, wherein: the lower bottom surface of the triangular column (4) is an inclined plane, and the section of the whole triangular column is in an inverted triangle shape.
3. The deep water type sediment interstitial water sampler of claim 1, characterized in that: the interior of the sampling small chamber (3) is inclined downwards at a certain gradient.
4. The deep water type sediment interstitial water sampler of claim 1, characterized in that: the horizontal length multiplied by the vertical width multiplied by the depth of the sampling area is 100mm multiplied by 50mm multiplied by 220mm, the horizontal length multiplied by the vertical width multiplied by the depth of the sampling chamber (3) is 80mm multiplied by 40mm multiplied by 10mm, 20 sampling chambers are arranged in total, and the sampling chambers are vertically arranged in 1 column and 20 rows.
5. The deep water type sediment interstitial water sampler of claim 1, wherein: the protective shell (1) is of a steel structure.
6. The deep water type sediment interstitial water sampler of claim 1, characterized in that: and a plurality of nut grooves (2) are arranged on the protective shell (1) above, at two sides and below the sampling area and used for fixing the filtering membrane.
7. The deep water type sediment interstitial water sampler of claim 1, wherein: the number of the metal iron rods (6) is two, and the two metal iron rods (6) are parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220134795.5U CN216771155U (en) | 2022-01-19 | 2022-01-19 | Deep water type sediment interstitial water sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220134795.5U CN216771155U (en) | 2022-01-19 | 2022-01-19 | Deep water type sediment interstitial water sampler |
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| Publication Number | Publication Date |
|---|---|
| CN216771155U true CN216771155U (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220134795.5U Expired - Fee Related CN216771155U (en) | 2022-01-19 | 2022-01-19 | Deep water type sediment interstitial water sampler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116754296A (en) * | 2023-08-17 | 2023-09-15 | 天津市水产研究所 | Self-moving sediment gap water collection equipment |
-
2022
- 2022-01-19 CN CN202220134795.5U patent/CN216771155U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116754296A (en) * | 2023-08-17 | 2023-09-15 | 天津市水产研究所 | Self-moving sediment gap water collection equipment |
| CN116754296B (en) * | 2023-08-17 | 2023-11-03 | 天津市水产研究所 | Self-moving sediment gap water collection equipment |
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Granted publication date: 20220617 |