CN115898334A - Underground light non-aqueous phase liquid removing device - Google Patents
Underground light non-aqueous phase liquid removing device Download PDFInfo
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- CN115898334A CN115898334A CN202310173633.1A CN202310173633A CN115898334A CN 115898334 A CN115898334 A CN 115898334A CN 202310173633 A CN202310173633 A CN 202310173633A CN 115898334 A CN115898334 A CN 115898334A
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- liquid
- collecting tank
- light non
- liquid collecting
- removal device
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- 239000007788 liquid Substances 0.000 title claims abstract description 113
- 239000008346 aqueous phase Substances 0.000 title claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims abstract description 3
- 239000006004 Quartz sand Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 238000005188 flotation Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 15
- 238000007667 floating Methods 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 14
- 239000012071 phase Substances 0.000 abstract description 6
- 238000000605 extraction Methods 0.000 description 6
- 239000003673 groundwater Substances 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 125000001997 phenyl group Chemical class [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention provides an underground light non-aqueous phase liquid removing device, which comprises a floating cylinder, a liquid collecting tank, a connecting hose between the floating cylinder and the liquid collecting tank for communicating fluid with each other, wherein the upper part of the liquid collecting tank is provided with a sliding guide rod extending along the vertical direction, the floating cylinder comprises a filtering part and a buoyancy regulating part connected below the filtering part, the filtering part and the buoyancy regulating part are configured to be sleeved on the sliding guide rod, so that the floating cylinder can slide up and down along the sliding guide rod, the liquid collecting tank is communicated with a liquid outlet pipe, the mass of the floating cylinder can be changed to ensure that a liquid inlet of the floating cylinder is always kept above the LNAPLs and a water interface, LNAPLs but not underground water is accurately extracted, the time and the cost for separating and disposing two phases are reduced, and the underground light non-aqueous phase liquid removing device has the characteristics of high LNAPLs removing efficiency, miniaturization and capability of removing various LNAPLs.
Description
Technical Field
The invention relates to the field of light non-aqueous phase liquid removal, in particular to an underground light non-aqueous phase liquid removal device.
Background
When the leakage amount of organic pollutants such as petroleum and benzene series is large, the organic pollutants may exist in a Light non-aqueous phase liquids (LNAPLs) free phase form after entering the groundwater environment, most of the organic pollutants float on the groundwater surface, and exist in a dissolved phase form and an adsorption phase form in an aquifer through the actions of dissolution, dispersion and the like, so that the groundwater pollution is caused. Compared with dissolved and adsorbed pollutants, the free phase has stronger heterogeneity and aggregation property in the aquifer, and can cause longitudinal and lateral redistribution of the pollution under the influence of soil capillary action, water level fluctuation and the like, and the concentration of the contained pollutants is far higher than that of the dissolved and adsorbed pollutants. If the LNAPLs are not completely removed, the residual LNAPLs will continue to release contaminants to the environment for a long period of time, with a significant environmental risk. Therefore, in groundwater remediation, LNAPLs are typically preferentially removed using techniques such as multiphase extraction where conditions permit.
However, the multiphase extraction technology extracts LNAPLs with water, which results in an increase in the amount of contaminated soil and easily causes emulsification of the LNAPLs in water, and has the problems of long two-phase separation time, high cost and low efficiency. The downhole extraction apparatus employed requires more precise extraction of LNAPLs than ground water to reduce the time and expense of two-phase separation and disposal in order to extract LNAPLs efficiently.
Disclosure of Invention
Therefore, the invention aims to provide a downhole light non-aqueous phase liquid removing device which is used for solving the problems of low efficiency caused by the extraction of water together by the multi-phase extraction technology and the like.
Specifically, the invention provides the following technical scheme:
in one aspect, the invention provides a downhole light non-aqueous phase liquid removing device which comprises a floating cylinder, a liquid collecting tank, a connecting hose between the floating cylinder and the liquid collecting tank and used for communicating fluid with each other, wherein a sliding guide rod extending along the vertical direction is arranged at the upper part of the liquid collecting tank, the floating cylinder comprises a filtering part and a buoyancy regulating part connected below the filtering part, the filtering part and the buoyancy regulating part are configured to be sleeved on the sliding guide rod, so that the floating cylinder can slide up and down along the sliding guide rod, and the liquid collecting tank is communicated with a liquid outlet pipe.
Furthermore, the filtering part and the buoyancy regulating part are provided with central sliding pipes, the central sliding pipes are sleeved on the periphery of the sliding guide rod, the periphery of the central sliding pipes of the buoyancy regulating part is provided with cavities for accommodating counterweights, and the bottom of the buoyancy regulating part is provided with counterweight filling openings communicated with the cavities; the filter screen is arranged on the periphery of the filter part, the lower part of the filter part is provided with a liquid discharge pipe penetrating through the buoyancy adjusting part, and the inner cavity of the filter part is communicated with the hose through the liquid discharge pipe.
Specifically, the liquid collecting tank comprises a liquid collecting tank shell, a liquid collecting tank liquid outlet pipe and a liquid collecting tank liquid inlet pipe, the liquid collecting tank liquid inlet pipe is connected with the hose, the liquid collecting tank liquid outlet pipe is connected with the liquid outlet pipe, and the sliding guide rod is connected to the upper portion of the liquid collecting tank shell.
As the preferred scheme, the counterweight filling opening is provided with a plug, so that the counterweight filling opening can be conveniently opened and closed.
Preferably, the weight is quartz sand.
Furthermore, the side surface of the buoyancy adjusting part is connected with an anti-rotation plate, and the anti-rotation plate is clamped with the liquid outlet pipe.
Further, still include the first centering device, first centering device is arranged in the top of sliding guide pole, is located the top of flotation pontoon.
Further, still include the second centering device, second centering device is placed in the collection liquid jar periphery.
Further, the first centering device is provided with a lifting lug.
Further, the hose coil is provided on the outer peripheral side of the slide guide bar.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
by adjusting the balance weight of the buoy, the liquid inlet of the filter part of the buoy can be accurately kept at a set position above an interface between the LNAPLs and water, so that the set position is close to the interface, and the LNAPLs are extracted as much as possible.
The number of the quartz sand filled in the buoy is adjusted to adapt to various LNAPLs with different densities.
Through the lifting lug on the upper part of the first centering device, the installation depth of the underground light non-aqueous phase liquid removing device can be adjusted according to the depth of the initial water level.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic structural diagram of a downhole light non-aqueous phase liquid removing device according to the present invention;
FIG. 2 is a schematic view of a buoy of a downhole light non-aqueous phase liquid removal device according to the present invention;
FIG. 3 is a schematic view of a liquid collection tank of a downhole light non-aqueous phase liquid removal device according to the present invention.
Detailed description of the preferred embodiments
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are only a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be appreciated by those of skill in the art that the following specific examples or embodiments are a series of presently preferred arrangements of the invention to further explain the principles of the invention, and that such arrangements may be used in conjunction or association with one another, unless it is expressly stated that some or all of the specific examples or embodiments are not in association or association with other examples or embodiments. Meanwhile, the following specific examples or embodiments are only provided as the best mode for setting, and are not to be understood as limiting the scope of the invention.
In a specific embodiment, as shown in fig. 1, the underground light non-aqueous phase liquid removing device comprises a buoy 1, a liquid collecting tank 2, a hose 3, a sliding guide rod 4, a liquid outlet pipe 5, a first centering device 6 and a second centering device 7.
As shown in figure 2, the buoy 1 comprises a buoyancy adjusting part 1-1, a filtering part 1-2, a liquid descending pipe 1-3, a counterweight 1-4, a counterweight filling opening 1-5, an anti-rotation plate 1-6 and a central sliding pipe 1-7. The buoyancy regulating part 1-1 is a sealing structure, and the buoyancy regulating part 1 floats on the liquid surface through buoyancy. The filtering part 1-2 is arranged above the buoyancy adjusting part 1-1, and the periphery of the filtering part 1-2 is provided with a filter screen for preventing foreign matters with large particle size in the liquid from entering the liquid dropping pipe 1-3 to prevent blockage. The lower part of the filtering part 1-2 is provided with a downcomer penetrating the buoyancy regulating part 1-1, through which light non-aqueous phase liquids (LNAPLs) flow under gravity into the liquid collecting tank 2 in fig. 1. The balance weight 1-4 is filled in the buoy 1-1,
in one embodiment, the counterweight is quartz sand, and the specific gravity of the buoy 1 can be adjusted by changing the filling amount of the quartz sand according to the density of the LNAPLs, so that the liquid inlet of the filter part 1-2 of the buoy 1 is accurately kept at a set position above the interface between the LNAPLs and water as shown in FIG. 1.
And the counterweight filling port 1-5 is arranged at the bottom of the buoyancy adjusting part 1-1 and is sealed by a plug, so that the counterweight 1-4 can be filled by opening, and the sealing can be kept after filling. The anti-rotation plate 1-6 is arranged on the side surface of the buoyancy adjusting part 1-1 and is clamped and limited with the liquid outlet pipe 5 to prevent the floating buoy 1 from rotating to cause the winding of the hose 3. The central sliding pipes 1-7 are arranged on the floating pontoon and used for positioning the floating pontoon 1 at the center of a well pipe, preventing the floating pontoon 1 from being clamped on a well wall and providing up-and-down sliding freedom to adapt to liquid level change in the well.
As shown in figure 3, the liquid collection tank 2 comprises a liquid collection tank shell 2-1, a liquid collection tank liquid outlet pipe 2-2 and a liquid collection tank liquid inlet pipe 2-3. The lower end of a liquid outlet pipe 2-2 of the liquid collecting tank is close to the bottom of a liquid collecting tank shell 2-1, the other end of the liquid outlet pipe extends out of the liquid collecting tank shell 2-1 to be connected with a liquid outlet pipe 5, one end of a liquid inlet pipe 2-3 of the liquid collecting tank extends into the liquid collecting tank shell 2-1, and the other end of the liquid inlet pipe is connected with a hose 3.
The top of the sliding guide rod 4 is provided with a first centering device 6, and the first centering device 6 is positioned above the buoy, so that the buoy 1 and the sliding guide rod 4 are both installed in a well in a centering way.
The periphery of the canister housing 2-1 is provided with a second centering device 7 to center the canister 2 in the well. The outer edge of the second centering device 7 is provided with a notch, because liquid exists in the well, the outer edge of the second centering device 7 is close to the well wall when the device is lifted up and down, water can be retained to generate large resistance, the operation is not easy, and the notch is increased to reduce the resistance when the device is lifted up and down.
As shown in fig. 1, the entire downhole light non-aqueous liquid removal device may be rigged to the lifting lug 6-1 of the first centralizing means 6 to a suitable depth based on the location of the interface between the LNAPLs and water in the well, such that the lifting lug 6-1 is approximately above the interface between the LNAPLs and water. The underground light non-aqueous phase liquid removing device can be arranged in the well in a centering way through a first centering device 6 and a second centering device 7 and a sliding guide rod 4 connected between the first centering device and the second centering device. According to the LNAPLs with different densities, the set position of the liquid inlet of the filtering part 1-2 above the interface of the LNAPLs and the water is adjusted by adjusting the amount of the counterweight 1-4 (such as quartz sand) in the buoyancy adjusting part 1-1, so that the set position limit is close to the interface, and the LNAPLs are ensured to be extracted as much as possible. Under the action of gravity, LNAPLs flow through the filter part 1-2, the lower liquid pipe 1-3 and the hose 3 through the filter screen and flow into the liquid collecting tank 2 through the liquid collecting tank liquid inlet pipe 2-3 on the liquid collecting tank 2. When the interface liquid level in the well changes, the buoyancy regulating part 1-1 slides up and down along the sliding guide rod 4 along with the change of the liquid level to drive the filtering part 1-2 to slide up and down, so that the liquid inlet of the filtering part 1-2 is ensured to be always at the set position above the interface of the LNAPLs and the water. When the buoy 1 slides up and down, the flexible hose 3 can be adjusted in a self-adaptive manner, the position of a liquid inlet of the filtering part 1-2 cannot be influenced, and the hose 3 is spirally wound on the periphery of the sliding guide rod to avoid winding.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A light non-aqueous phase liquid clearing device in pit which characterized in that: including flotation pontoon (1), collection liquid jar (2), coupling hose (3) are used for communicateing fluid each other between flotation pontoon and collection liquid jar, and collection liquid jar upper portion is equipped with along the slip guide bar (4) of vertical direction extension, and the flotation pontoon includes filter house (1-2) and connects buoyancy regulating part (1-1) in the filter house below, the slip guide bar is located to cover to filter house and buoyancy regulating part configuration, makes the flotation pontoon can slide from top to bottom along the slip guide bar, collects liquid jar (2) and drain pipe (5) intercommunication.
2. The downhole light non-aqueous liquid removal device of claim 1, wherein: the filter part and the buoyancy adjusting part are provided with central sliding pipes (1-7), the periphery of the sliding guide rod is sleeved with the central sliding pipes, a cavity for accommodating a balance weight (1-4) is arranged on the periphery of the central sliding pipe of the buoyancy adjusting part, a balance weight filling opening (1-5) communicated with the cavity is formed in the bottom of the buoyancy adjusting part, a filter screen is arranged on the periphery of the filter part (1-2), a liquid discharging pipe (1-3) penetrating through the buoyancy adjusting part is arranged on the lower portion of the filter part, and an inner cavity of the filter part is communicated with the hose (3) through the liquid discharging pipe (1-3).
3. The downhole light non-aqueous liquid removal device of claim 2, wherein: the liquid collecting tank (2) comprises a liquid collecting tank shell (2-1), a liquid collecting tank liquid outlet pipe (2-2) and a liquid collecting tank liquid inlet pipe (2-3), the liquid collecting tank liquid inlet pipe is connected with the hose (3), the liquid collecting tank liquid outlet pipe is connected with the liquid outlet pipe (5), and the upper part of the liquid collecting tank shell is connected with the sliding guide rod (4).
4. The downhole light non-aqueous liquid removal device of claim 3, wherein: the counterweight filling port (1-5) is provided with a plug.
5. The downhole light non-aqueous liquid removal device of claim 4, wherein: the balance weight (1-4) is quartz sand.
6. The downhole light non-aqueous liquid removal device of claim 5, wherein: the side surface of the buoyancy adjusting part is connected with anti-rotating plates (1-6), and the anti-rotating plates (1-6) are clamped and limited with the liquid outlet pipe (5).
7. The downhole light non-aqueous liquid removal device of claim 6, wherein: the device also comprises a first centering device (6), wherein the first centering device is arranged at the top of the sliding guide rod (4) and is positioned above the buoy.
8. The downhole lightweight non-aqueous liquid removal device of claim 7, wherein: the device also comprises a second centering device (7), and the second centering device (7) is arranged on the periphery of the liquid collection tank.
9. The downhole light non-aqueous liquid removal device of claim 8, wherein: the first centering device (6) is provided with a lifting lug.
10. The downhole light non-aqueous liquid removal device of claim 9, wherein: the spiral disc of the hose (3) is arranged on the outer periphery of the sliding guide rod.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310173633.1A CN115898334A (en) | 2023-02-28 | 2023-02-28 | Underground light non-aqueous phase liquid removing device |
| CN202321177532.3U CN219622673U (en) | 2023-02-28 | 2023-05-16 | Underground light nonaqueous phase liquid removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310173633.1A CN115898334A (en) | 2023-02-28 | 2023-02-28 | Underground light non-aqueous phase liquid removing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115898334A true CN115898334A (en) | 2023-04-04 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310173633.1A Pending CN115898334A (en) | 2023-02-28 | 2023-02-28 | Underground light non-aqueous phase liquid removing device |
| CN202321177532.3U Active CN219622673U (en) | 2023-02-28 | 2023-05-16 | Underground light nonaqueous phase liquid removing device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321177532.3U Active CN219622673U (en) | 2023-02-28 | 2023-05-16 | Underground light nonaqueous phase liquid removing device |
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| Country | Link |
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| CN (2) | CN115898334A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29904812U1 (en) * | 1999-03-09 | 1999-09-23 | Adam Karl Ludwig | Compact invention for the continuous removal of liquid light phases from groundwater |
| JPH11333452A (en) * | 1998-05-29 | 1999-12-07 | Yamaha Motor Co Ltd | Apparatus for removing floating substance |
| CN102583645A (en) * | 2012-03-28 | 2012-07-18 | 西南铝业（集团）有限责任公司 | Floating oil absorbing device |
| CN205287721U (en) * | 2016-01-06 | 2016-06-08 | 东莞市信松机电有限公司 | Counter weight formula flotation pontoon for water oil separating |
| CN205419852U (en) * | 2016-03-17 | 2016-08-03 | 大连建华污泥处理有限公司 | Adjustable float -type waste oil collecting device |
| CN205953597U (en) * | 2016-08-26 | 2017-02-15 | 王剑锋 | Oil collecting device with adjustable |
| CN109879369A (en) * | 2019-04-09 | 2019-06-14 | 张兴奎 | A kind of underground floating oil collecting device |
| CN110627263A (en) * | 2019-10-28 | 2019-12-31 | 中冶南方都市环保工程技术股份有限公司 | Underground water light non-aqueous phase liquid pollutant cleaning system |
| CN210981442U (en) * | 2019-12-24 | 2020-07-10 | 湖南军信环保股份有限公司 | Telescopic floating rod liquid level meter |
| CN113044918A (en) * | 2021-03-04 | 2021-06-29 | 北京高能时代环境技术股份有限公司 | A equip for collecting NAPLs in groundwater |
| CN214780909U (en) * | 2021-06-09 | 2021-11-19 | 合肥美诗捷食品有限公司 | Oil-water separator adjusting device based on intelligent control |
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-
2023
- 2023-02-28 CN CN202310173633.1A patent/CN115898334A/en active Pending
- 2023-05-16 CN CN202321177532.3U patent/CN219622673U/en active Active
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| Publication number | Publication date |
|---|---|
| CN219622673U (en) | 2023-09-01 |
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