CN108906865A - A kind of method of soil remediation - Google Patents
A kind of method of soil remediation Download PDFInfo
- Publication number
- CN108906865A CN108906865A CN201810628048.5A CN201810628048A CN108906865A CN 108906865 A CN108906865 A CN 108906865A CN 201810628048 A CN201810628048 A CN 201810628048A CN 108906865 A CN108906865 A CN 108906865A
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- Prior art keywords
- well
- soil remediation
- water
- deep
- pipe
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- 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.)
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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
- B09C2101/00—In situ
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to a kind of methods of soil remediation, include the following steps：Preparation of construction, installation positioning, deep-well pipe laying, back-up sand gravel, well-flushing, lower pump examination take out, are laid with discharge pipe line and power supply circuit, following formula draw water and record.The method of soil remediation of the present invention can effectively achieve the purpose that repair underground water, applicability is extensive, repairing effect is good, repair time is fast, and its technology, environment and safety index are all satisfied requirement, is worthy of popularization using deep-well displacement landfill point underground water.
Description
Technical field
The present invention relates to a kind of methods of soil remediation, are primarily adapted for use in shadow of the Groundwater Environmental Quality by landfill sludge
It rings, pollutant concentration is higher, heavy contamination place.
Background technique
In the prior art, it is frequently present of influence of a part of Groundwater Environmental Quality by landfill sludge, pollutant is dense
Higher, heavy contamination place is spent, pollutant mainly includes heavy metal, volatile organic matter and semi-volatile organic matter etc..
When the higher pollutant of more and concentration there are type in underground water, in situ chemical oxidation, sky are generally used in the prior art
Air-blowing is de- or pumps out the processing methods such as processing.Although it is preferable that in situ chemical oxidation handles repairing effect, chemical reaction may
Generate new polluter；Air stripping repair time is slow and effect is poor；Although pumping out processing can subtract rapidly in the short time
Low land is lauched middle pollutant level, but after pump-out operation stops, due to adsorbing the release of organic pollutant in soil, often
There is the hangover of underground water pollutant and pollutant concentration rebound phenomena, is difficult to reach repairing effect in a short time.
Therefore, this field is badly in need of seeking a kind of method that can effectively repair underground water, thus the present invention generates.
Summary of the invention
For the above-mentioned technical problem of the prior art, the object of the present invention is to provide a kind of methods of soil remediation, adopt
Landfill point underground water is replaced with deep-well, can effectively achieve the purpose that repair underground water.
In order to achieve the above objectives, the present invention is achieved by the following technical solutions：
A kind of method of soil remediation, includes the following steps：
Preparation of construction, installation positioning, deep-well pipe laying, back-up sand gravel, well-flushing, lower pump examination are taken out, and discharge pipe line and power supply circuit are laid with, under
Formula is drawn water and is recorded.
The preparation of construction includes foundation pit leveling piecemeal, and earthwork leveling is reached every piece of place water storage height 25cm-
35cm, and plastic covering film.
The installation is positioned as：Well point position is determined according to drawing surveying setting-out.
The deep-well pipe laying is embedded using water jetting, including punching and pipe laying, first by high-pressure hydraulic pump using high when punching
Moulding pipe is connect with punching pipe, and the water spray aperture through main punching tube head washes soil with jet erosion rapidly, while making punching
Pipe rotates up and down, and it is heavy to wash down, to gradually form hole in soil, natural mud guard aperture after wellhole is formed, is extracted
Punching pipe, is immediately inserted into well casing.
The joint of the well casing is wrapped up using double-layer leaching net, and is sealed using elastic tape.
The depth of the deep-well is 9-12m, and well casing 98-100cm above ground level, the distance between each deep-well is 14-
15m。
The back-up sand gravel is that mineral granule is filled between well casing and hole wall, forms sandstone filtering layer.
The sandstone filtering layer with a thickness of 60-100mm, and the packed height of sandstone filtering layer is hyperfiltration tube top 1000-
1800mm。
The following formula draws water to draw water using 0.75kw immersible pump.
Beneficial effects of the present invention are as follows：
The method of soil remediation of the present invention uses deep-well displacement landfill point underground water, can effectively reach and repair underground water
Purpose, applicability is extensive, repairing effect is good, repair time is fast, and its technology, environment and safety index are all satisfied requirement, value
It must promote and apply.
Detailed description of the invention
Fig. 1 is the layout diagram of the deep-well pipe laying in the present invention；
Wherein, 1 it is well casing, 2 is double-layer leaching net.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below, but protection scope of the present invention is not limited to
This.
Embodiment
The method of soil remediation of the present invention, includes the following steps：
（1）Preparation of construction：Foundation pit is carried out to place according to live foundation pit absolute altitude and flattens piecemeal, is optimized according to the earthwork and is deployed, entirely
Foundation pit is divided into 7 pieces, by the earthwork leveling reach every piece of place water storage height 25cm-35cm, in order to accelerate underground water displacement when
Between, side slope, and plastic covering film are rebuild, guarantees the stabilization of side slope.
Deep-well water outlet in foundation pit east side is connected to the double-wall corrugated sewage of PE that diameter is 300 with nylon pipeline by 0.75kw sewage pump
Pipe, the double-wall corrugated sewage pipe of the PE for being 300 by three diameters imports the double-wall corrugated sewage pipe of PE that west side diameter is 400, then converges
Enter southwestern side group hole catch pit, deep-well water outlet in foundation pit west side is directly connected to west side diameter with nylon tube by 0.75kw sewage pump and is
The double-wall corrugated sewage pipe of 400 PE, foundation pit catch pit sewage are transported to haffir by 11kw sewage pump, pump through reservoir defeated
It send to sewage network.
（2）Installation positioning：According to the measurement control point of offer, well point position is determined according to drawing surveying setting-out, is then existed
Well location is first removed obstacles.
（3）Deep-well pipe laying：Embedded using water jetting, including punching and pipe laying, high-pressure hydraulic pump is first utilized high pressure by when punching
Sebific duct is connect with punching pipe, and using high pressure water, the water spray aperture through main punching tube head washes soil with jet erosion rapidly,
Rotate punching pipe up and down simultaneously, it is heavy to wash down, so that hole is gradually formed in soil, and natural mud guard aperture, wellhole
After formation, punching pipe is extracted, well casing 1 is immediately inserted into, in order to avoid drift sand penetrates into wellhole, the joint of well casing 1 is wrapped using double-layer leaching net 2
It wraps up in, and is sealed using elastic tape, in case squeezing into silt silts well casing 1 up.Since the groundwater remediation time is longer, 1 material of well casing is soft
The PE double-wall corrugated pipe that toughness and the more stable diameter of intensity are 300, guarantees that deep-well reaches the longer working time.
Further it is arranged, the depth of deep-well is 9-12m, and the distance between each deep-well is 14-15m.
To prevent rainwater silt or foreign matter from entering in well, the 98-100cm above ground level of well casing 1, well head is covered.Well casing is hung to want
Vertically, and it is maintained at wellhole center.
（4）Back-up sand gravel：It fills mineral granule between well casing and hole wall, forms sandstone filtering layer, to prevent hole wall from collapsing soil.Sandstone
Using coarse sand, the mesh of blocking chimney filter is prevented.Chimney filter should be placed on the centre of wellhole, sandstone filtering layer with a thickness of 60-100mm,
To improve water penetration, and prevent grogs from penetrating into the mesh that chimney filter blocks chimney filter.The packed height of sandstone filtering layer is hyperfiltration tube top
1000-1800mm should be filled to former phreatic line or more, to guarantee that soil layer water flow or more is unimpeded.
（5）Well-flushing；
（6）Lower pump examination is taken out；
（7）It is laid with discharge pipe line and power supply circuit；
（8）Following formula draws water：It is drawn water using 0.75kw immersible pump.
（9）Record.
Comparative example 1
Soil remediation is carried out using in situ chemical oxidation method.It is specific to repair the known property common sense that step is this field, herein not
It repeats.
Comparative example 2
Soil remediation is carried out using air stripping method.It is specific to repair the known property common sense that step is this field, it does not go to live in the household of one's in-laws on getting married herein
It states.
Comparative example 3
It uses and pumps out the known property common sense that facture progress soil remediation repairs step specifically as this field, do not go to live in the household of one's in-laws on getting married herein
It states.
Interpretation of result
Groundwater remediation result see the table below 1
Table 1
By upper table 1 it is found that the method for soil remediation of the present invention, replaces landfill point underground water using deep-well, can effectively reach and repair
The purpose of multiple underground water, applicability is extensive, repairing effect is good, repair time is fast, and its technology, environment and safety index are full
Foot requires, and is worthy of popularization.
Above-described embodiment is only used for illustrating inventive concept of the invention, rather than the restriction to rights protection of the present invention,
It is all to be made a non-material change to the present invention using this design, protection scope of the present invention should all be fallen into.
Claims (9)
1. a kind of method of soil remediation, it is characterised in that include the following steps：
Preparation of construction, installation positioning, deep-well pipe laying, back-up sand gravel, well-flushing, lower pump examination are taken out, and discharge pipe line and power supply circuit are laid with, under
Formula is drawn water and is recorded.
2. the method for soil remediation as described in claim 1, it is characterised in that：The preparation of construction includes foundation pit leveling point
Earthwork leveling is reached every piece of place water storage height 25cm-35cm, and plastic covering film by block.
3. the method for soil remediation as described in claim 1, it is characterised in that the installation is positioned as：It is put according to drawing measurement
Line determines well point position.
4. the method for soil remediation as described in claim 1, it is characterised in that：The deep-well pipe laying is embedded using water jetting,
Including punching and pipe laying, first high-pressure hydraulic pump is connect using high-pressure rubber pipe with punching pipe when punching, the spray through main punching tube head
Water aperture washes soil with jet erosion rapidly, while rotates punching pipe up and down, and it is heavy to wash down, to gradually exist
Hole is formed in soil, natural mud guard aperture after wellhole is formed, extracts punching pipe, is immediately inserted into well casing.
5. the method for soil remediation as claimed in claim 4, it is characterised in that：The joint of the well casing uses double-layer leaching net packet
It wraps up in, and is sealed using elastic tape.
6. the method for soil remediation as claimed in claim 4, it is characterised in that：The depth of the deep-well is 9-12m, and well casing is higher by
Ground 98-100cm, the distance between each deep-well are 14-15m.
7. the method for soil remediation as described in claim 1, it is characterised in that：The back-up sand gravel is between well casing and hole wall
Mineral granule is filled, sandstone filtering layer is formed.
8. the method for soil remediation as claimed in claim 2, it is characterised in that：The sandstone filtering layer with a thickness of 60-100mm,
And the packed height of sandstone filtering layer is hyperfiltration tube top 1000-1800mm.
9. the method for soil remediation as described in claim 1, it is characterised in that：The following formula draws water to dive under water using 0.75kw
Pumping water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628048.5A CN108906865A (en) | 2018-06-19 | 2018-06-19 | A kind of method of soil remediation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628048.5A CN108906865A (en) | 2018-06-19 | 2018-06-19 | A kind of method of soil remediation |
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| Publication Number | Publication Date |
|---|---|
| CN108906865A true CN108906865A (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810628048.5A Pending CN108906865A (en) | 2018-06-19 | 2018-06-19 | A kind of method of soil remediation |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202466645U (en) * | 2012-01-17 | 2012-10-03 | 常州市环境科学研究院 | Extraction-recharge well applied to restoration work of polluted underground water on site |
| CN104692531A (en) * | 2013-12-04 | 2015-06-10 | 北京德瑞科森环保科技有限公司 | Underground water heavy metal pollution remediation device |
| CN104975611A (en) * | 2015-07-17 | 2015-10-14 | 河北二十冶建设有限公司 | Sinking device and method for well point drawdown pipe of liquid soil layer |
| CN105399245A (en) * | 2015-12-18 | 2016-03-16 | 江苏维尔利环保科技股份有限公司 | Remediation device of hexavalent chromium-polluted underground water, and remediation method thereof |
| CN105568956A (en) * | 2016-02-25 | 2016-05-11 | 山东大学 | Well-point dewatering combined surcharge preloading consolidation device for subgrade and application method of such device |
-
2018
- 2018-06-19 CN CN201810628048.5A patent/CN108906865A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202466645U (en) * | 2012-01-17 | 2012-10-03 | 常州市环境科学研究院 | Extraction-recharge well applied to restoration work of polluted underground water on site |
| CN104692531A (en) * | 2013-12-04 | 2015-06-10 | 北京德瑞科森环保科技有限公司 | Underground water heavy metal pollution remediation device |
| CN104975611A (en) * | 2015-07-17 | 2015-10-14 | 河北二十冶建设有限公司 | Sinking device and method for well point drawdown pipe of liquid soil layer |
| CN105399245A (en) * | 2015-12-18 | 2016-03-16 | 江苏维尔利环保科技股份有限公司 | Remediation device of hexavalent chromium-polluted underground water, and remediation method thereof |
| CN105568956A (en) * | 2016-02-25 | 2016-05-11 | 山东大学 | Well-point dewatering combined surcharge preloading consolidation device for subgrade and application method of such device |
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Application publication date: 20181130 |
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