CN110624943A - Device for accurately pumping NAPL pollutants in underground water - Google Patents
Device for accurately pumping NAPL pollutants in underground water Download PDFInfo
- Publication number
- CN110624943A CN110624943A CN201910828181.XA CN201910828181A CN110624943A CN 110624943 A CN110624943 A CN 110624943A CN 201910828181 A CN201910828181 A CN 201910828181A CN 110624943 A CN110624943 A CN 110624943A
- Authority
- CN
- China
- Prior art keywords
- napl
- extraction
- positioner
- probe
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 32
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 32
- 238000005086 pumping Methods 0.000 title claims abstract description 13
- 238000000605 extraction Methods 0.000 claims abstract description 39
- 239000000523 sample Substances 0.000 claims abstract description 25
- 239000003673 groundwater Substances 0.000 claims abstract description 15
- 239000000356 contaminant Substances 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 238000005259 measurement Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000012071 phase Substances 0.000 abstract description 41
- 239000008346 aqueous phase Substances 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 description 11
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/007—Reclamation of contaminated soil by removing contaminants floating on the water table
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Soil Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
- Extraction Or Liquid Replacement (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a device for accurately pumping NAPL pollutants in underground water, which comprises: a positioner capable of moving up and down along the well pipe; the densimeter probe or the viscometer probe is fixed on the positioner; and the lower pipe orifice of the extraction pipe is fixed on the positioner and is positioned on the same horizontal plane with the densimeter probe or the viscometer probe, and the upper pipe orifice of the extraction pipe is connected with the inlet of the water suction pump. By means of the data returned by the densitometer probe or viscometer probe, the boundary between the NAPL phase and the aqueous phase can be precisely found, thereby precisely extracting the NAPL phase contaminants from the groundwater. The downstream of the water pump can be connected with a temporary storage tank and a separation and precipitation tank, a small amount of water in the extract can be separated out through separation and precipitation phases, and NAPL phase pollutants are recycled.
Description
Technical Field
The invention relates to a device for extracting and recovering NAPL phase pollutants in an underground water remediation process.
Background
NAPL refers to a non-aqueous liquid, comprising a light non-aqueous liquid (LNAPL, lighter than water, floating on the surface of water) and a heavy non-aqueous liquid (DNAPL, heavier than water, sinking to the bottom of water).
In the groundwater remediation process, NAPL phase pollutants are difficult to pump out in the traditional pumping treatment because the density of the NAPL phase pollutants is less than that of water or greater than that of water.
Moreover, most NAPL phase pollutants can be recycled, and the NAPL phase pollutants are difficult to be extracted in a targeted manner and separated and reused by the traditional extraction treatment.
Disclosure of Invention
Therefore, the invention provides a device for accurately pumping NAPL pollutants in underground water, which can accurately pump the underground water containing NAPL phase pollutants.
In addition, the invention can recycle NAPL phase pollutants.
In order to achieve the purpose, the invention adopts the technical scheme that:
an apparatus for accurate extraction of NAPL contaminants from groundwater, comprising:
a positioner capable of moving up and down along the well pipe;
the densimeter probe or the viscometer probe is fixed on the positioner;
and the lower pipe orifice of the extraction pipe is fixed on the positioner and is positioned on the same horizontal plane with the densimeter probe or the viscometer probe, and the upper pipe orifice of the extraction pipe is connected with the inlet of the water suction pump.
The device for accurately pumping NAPL pollutants out of underground water further comprises a positioning rod, wherein the positioning rod is an anti-corrosion metal rod and is vertically arranged in the center of the well pipe and fixedly connected with the well pipe, and the positioning rod extends downwards from a well mouth;
the positioner is provided with a positioning matching hole, and the positioning rod penetrates through the positioning matching hole, so that the positioner can move up and down relative to the positioning rod.
The device for accurately pumping NAPL pollutants in underground water is characterized in that the positioning rod is of a multi-section series structure, and all series sections are in butt joint through threaded ports.
The device for accurately extracting NAPL pollutants in underground water is characterized in that the positioner is further provided with a measuring installation hole and an extraction pipe installation hole, the densimeter probe or the viscometer probe is installed in the measuring installation hole, and the lower pipe orifice of the extraction pipe is fixed in the extraction pipe installation hole.
The device for accurately extracting NAPL pollutants in underground water is characterized in that the positioning matching hole is non-circular.
The device to accurate extraction of NAPL pollutant in groundwater, wherein, the location mating holes is opened at the lateral margin with the circular port has square groove, the locating lever is then that the lateral margin at circular pole body has a square track in the protrusion, the cooperation of square track and square groove can restrict the rotation of locator.
The device for accurately pumping NAPL pollutants in underground water further comprises a temporary storage tank connected with an outlet of the water pump.
The device for accurately pumping NAPL pollutants in underground water further comprises a separation settling tank connected to the downstream of the temporary storage tank.
The device for accurately pumping NAPL pollutants in underground water is characterized in that the pumping pipe is a stainless steel hose and is connected with a winch.
The device for accurately extracting NAPL pollutants in underground water is characterized in that a pulley at the wellhead is wound between two ends of the extraction pipe.
Compared with the prior art, the invention has the beneficial effects that:
(1) the extraction device can be used for accurately extracting NAPL phase pollutants in underground water.
(2) A small amount of water in the extract can be separated out by separating the precipitated phase, and NAPL phase pollutants are recycled.
(3) The device can be used independently or combined with other underground water restoration technologies.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a top view of the positioner;
fig. 3 is a side view of the positioner.
Description of reference numerals: a positioning rod 1; a positioner 2; a measurement mounting hole 3; an extraction pipe mounting hole 4; a positioning matching hole 5; a square groove 51; a densitometer probe 6; an extraction tube 7; a pulley 8; a pulley bracket 81; a water pump 9; a temporary storage box 10; a separation settling tank 11; a well tubular 12.
Detailed Description
Some specific embodiments of the invention will be described in detail below, by way of example and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.
As shown in fig. 1, the present invention provides an apparatus for accurate extraction of NAPL contaminants in groundwater, comprising:
the positioning rod 1 is an anticorrosive metal rod, is arranged in the center of the well pipe 12 in the vertical direction and is fixedly connected with the well pipe 12, the positioning rod 1 extends downwards from the wellhead to a target depth, in order to adapt to the requirements of different target depths, the positioning rod 1 can adopt a multi-section series structure, and all series sections are butted by threaded ports;
the locator 2, as shown in fig. 2 and 3, is a cake-shaped device, the diameter of which is slightly smaller than the well pipe 12, and the locator is provided with a measuring installation hole 3, an extraction pipe installation hole 4 and a locating matching hole 5; the positioning rod 1 passes through the positioning matching hole 5, so that the positioner 2 can move up and down relative to the positioning rod 1, in order to prevent the positioner 2 and the positioning rod 1 from rotating relatively, the positioning matching hole 5 is in a non-circular shape, in the embodiment, the positioning matching hole 5 is formed by opening a square groove 51 at the side edge of a circular hole, the positioning rod 1 is formed by protruding a square rail (not shown) at the side edge of a circular rod body, and the rotation of the positioner 2 is limited by the matching of the square rail and the square groove 51, so that the cable and the pipeline are prevented from being wound mutually due to the rotation of the positioner 2;
a densitometer probe 6 (or viscometer probe) mounted in the measurement mounting hole 3;
the lower pipe orifice of the extraction pipe 7 is fixed in the extraction pipe mounting hole 4 and is positioned on the same horizontal plane with the densimeter probe 6 at the bottom of the positioner 2, the extraction pipe 7 bypasses a pulley 8 at the well orifice, and the upper pipe orifice of the extraction pipe is connected with the inlet of a water pump 9;
a temporary storage tank 10 connected to the outlet of the water pump 9 and used for temporarily storing the NAPL phase liquid pumped by the water pump 9;
and a separation and sedimentation tank 11 connected to the downstream of the temporary storage tank 10, for allowing the liquid in the temporary storage tank 10 to stand to separate the NAPL phase from the aqueous phase, and after the separation, withdrawing the aqueous phase liquid, and recovering and reusing the NAPL phase liquid.
When the invention is used, the water inlet depth of the positioner 2 can be changed by pulling the extraction pipe 7 by hand or operating a winch (not shown) connected to the extraction pipe 7, meanwhile, the densimeter probe 6 continuously transmits the detected data back to the ground in a wired or wireless way, and the boundary between the NAPL phase and the water phase can be found according to the data returned by the densimeter probe 6 (the data measured by the densimeter probe 6 are stepped on the upper and lower sides of the boundary, so that the position of the boundary can be judged).
The using method of the invention is as follows:
(1) locator 2 is lowered to the depth of the identified NAPL phase contamination.
(2) Aiming at LNAPL pollutants (lighter than water and floating on the water surface), the liquid level lines of the LNAPL phase and the water phase are found out according to data fed back by an online densimeter (viscometer).
(3) And fixing the positioner 2 at the liquid level line, starting a water pump, and pumping out the LNAPL phase.
(4) When the densitometer (viscometer) did not detect the LNAPL phase contaminant for 10S continuously, the water pump was turned off. If the LNAPL phase pollutants are not detected again by the densitometer (the viscometer) within 24 hours (according to the soil permeability coefficient and the groundwater flow speed condition of each region), the LNAPL phase is treated completely by default. And in the later stage, the water level is continuously detected through the control system, and once LNAPL phase substances are monitored, the control system automatically starts the water pump to extract the NAPL phase.
(5) Aiming at DNAPL phase pollutants (heavier than water and sinking to the water bottom), lowering the positioner 2 to the bottom of the well for monitoring the DNAPL phase pollutants, starting a water pump for extraction as long as the DNAPL phase pollutants are monitored, and closing the water pump when the DNAPL phase pollutants are not detected within 10 seconds continuously; and then continuously monitoring the DNAPL through the control system, and automatically starting a water pump to extract the DNAPL phase once the DNAPL phase substances are monitored.
(6) The extracted liquid is firstly stored in a temporary storage tank 10, then is pumped into a separation and sedimentation tank 11 for standing, after the NAPL phase and the water phase are separated, the water phase is extracted, and the NAPL phase liquid is recycled.
The invention has the advantages that:
(1) the extraction device can be used for accurately extracting NAPL phase pollutants in underground water.
(2) A small amount of water in the extract can be separated out by separating the precipitated phase, and NAPL phase pollutants are recycled.
(3) The device can be used independently or combined with other underground water restoration technologies.
Claims (10)
1. An apparatus for accurate extraction of NAPL contaminants from groundwater, comprising:
a positioner capable of moving up and down along the well pipe;
the densimeter probe or the viscometer probe is fixed on the positioner;
and the lower pipe orifice of the extraction pipe is fixed on the positioner and is positioned on the same horizontal plane with the densimeter probe or the viscometer probe, and the upper pipe orifice of the extraction pipe is connected with the inlet of the water suction pump.
2. The device for accurately pumping NAPL contaminants out of groundwater according to claim 1, further comprising a positioning rod, which is an anti-corrosion metal rod, vertically disposed in the center of the well casing and fixedly connected to the well casing, the positioning rod extending downward from the wellhead;
the positioner is provided with a positioning matching hole, and the positioning rod penetrates through the positioning matching hole, so that the positioner can move up and down relative to the positioning rod.
3. The device for the accurate extraction of NAPL contaminants from groundwater of claim 2, wherein the positioning rod is in a multi-segment series structure with threaded ports in between.
4. The apparatus of claim 2, wherein the positioner is further provided with a measurement mounting hole and an extraction pipe mounting hole, the densitometer probe or viscometer probe is mounted in the measurement mounting hole, and the lower mouth of the extraction pipe is fixed in the extraction pipe mounting hole.
5. The apparatus for precise extraction of NAPL contaminants in groundwater according to claim 2, wherein the positioning mating hole is non-circular in shape.
6. The device for extracting NAPL pollutants in groundwater according to claim 5, wherein the positioning matching hole is a square groove formed on the side edge of the circular hole, the positioning rod is a square rail protruding from the side edge of the circular rod, and the rotation of the positioner can be limited by the matching of the square rail and the square groove.
7. The apparatus for precise extraction of NAPL contaminants from groundwater according to claim 1, further comprising a holding tank connected to the outlet of the extraction pump.
8. The apparatus for precise extraction of NAPL contaminants in groundwater according to claim 7, further comprising a separation settling tank connected downstream of the holding tank.
9. The apparatus for the precise extraction of NAPL contaminants in groundwater according to claim 1, wherein the extraction tube is a stainless steel hose with a hoist attached.
10. An apparatus for accurate extraction of NAPL contaminants in groundwater according to claim 9, wherein the extraction tube passes around a pulley at a wellhead between two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828181.XA CN110624943A (en) | 2019-09-03 | 2019-09-03 | Device for accurately pumping NAPL pollutants in underground water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910828181.XA CN110624943A (en) | 2019-09-03 | 2019-09-03 | Device for accurately pumping NAPL pollutants in underground water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110624943A true CN110624943A (en) | 2019-12-31 |
Family
ID=68970119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910828181.XA Pending CN110624943A (en) | 2019-09-03 | 2019-09-03 | Device for accurately pumping NAPL pollutants in underground water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110624943A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517632A (en) * | 2020-12-18 | 2021-03-19 | 苏州精英环保有限公司 | Extraction well and heterogeneous extraction system of restoration contaminated site NAPL looks |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10192834A (en) * | 1997-01-13 | 1998-07-28 | Hitachi Plant Eng & Constr Co Ltd | Soil pollution cleaning method |
| CN201634455U (en) * | 2010-01-11 | 2010-11-17 | 华东理工大学 | Easy device for pumping non-aqueous-phase liquid of chlorinated hydrocarbons in polluted groundwater |
| CN203350238U (en) * | 2013-06-08 | 2013-12-18 | 西安格远自动化科技有限公司 | Humidity monitor |
| CN211027493U (en) * | 2019-09-03 | 2020-07-17 | 中科鼎实环境工程有限公司 | Device for accurately extracting NAP L pollutants in underground water |
-
2019
- 2019-09-03 CN CN201910828181.XA patent/CN110624943A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10192834A (en) * | 1997-01-13 | 1998-07-28 | Hitachi Plant Eng & Constr Co Ltd | Soil pollution cleaning method |
| CN201634455U (en) * | 2010-01-11 | 2010-11-17 | 华东理工大学 | Easy device for pumping non-aqueous-phase liquid of chlorinated hydrocarbons in polluted groundwater |
| CN203350238U (en) * | 2013-06-08 | 2013-12-18 | 西安格远自动化科技有限公司 | Humidity monitor |
| CN211027493U (en) * | 2019-09-03 | 2020-07-17 | 中科鼎实环境工程有限公司 | Device for accurately extracting NAP L pollutants in underground water |
Non-Patent Citations (1)
| Title |
|---|
| Г.C.库兹涅佐夫等: "《油气田开发期地球物理监测技术》", 北京石油工业出版社, pages: 166 - 171 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112517632A (en) * | 2020-12-18 | 2021-03-19 | 苏州精英环保有限公司 | Extraction well and heterogeneous extraction system of restoration contaminated site NAPL looks |
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