CN103722007B - A kind of contaminated soil in-situ combination restorative procedure - Google Patents
A kind of contaminated soil in-situ combination restorative procedure Download PDFInfo
- Publication number
- CN103722007B CN103722007B CN201410013435.XA CN201410013435A CN103722007B CN 103722007 B CN103722007 B CN 103722007B CN 201410013435 A CN201410013435 A CN 201410013435A CN 103722007 B CN103722007 B CN 103722007B
- Authority
- CN
- China
- Prior art keywords
- situ
- drip washing
- soil
- stabilisation
- well
- 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.)
- Expired - Fee Related
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of contaminated soil in-situ combination restorative procedure, drip washing in situ and original position stabilisation solidification is used to be used in combination, including following several steps: send drip washing liquid toward injecting into well, then by out well, the leacheate containing pollutant is extracted out, and the leacheate containing pollutant will be processed at sewage disposal device；After drip washing terminates, stabilization agent is injected Polluted area by the injection well that drip washing uses in situ, utilize out well to control stabilization agent and flow to, it is achieved recycle；After stabilisation, utilizing injection well irrigation to enter firming agent, isolation contaminated sites thing contacts with environment, filling soil space；Present invention incorporates drip washing in situ and the advantage of stabilisation/solidification in situ, treatment effect is more preferable.
Description
Technical field
The invention belongs to contaminated soil remediation Treatment process field, be specifically related to contaminated soil in-situ combination reparation
Method.
Background technology
Along with the continuous quickening of China's industrialization and urbanization process, Soil Environmental Pollution problem is the severeest, dirty
Dye agricultural land soil about 10%, enterprises remove carryover contamination place reaches hundreds thousand of hectare, sustainable to land resource
Utilizing and constitute threat with agricultural product ecological safety, the improvement of contaminated site is extremely urgent.Soil remediation presses field
Ground can be divided into in-situ immobilization and showering, and showering not only processing cost is high, and is difficult to administer deep layer
Soil and the most contaminated place of subsoil water.Therefore, develop multiple based technique for in-situ remediation and there is preferable reality
Application prospect.
Soil leaching and stabilisation solidification are that soil in-situ processes the most frequently used technology.Original position soil drip washing is passed through
Injector wells etc. apply eluent to soil so that it is penetrate through downwards pollutant and interact therewith, drip washing
Agent pollutant combine, and ultimately form transportable state compound by effects such as desorbing, dissolving or complexations.Contain
The solution of pollutant can be collected by modes such as extracting well, store, and further processes, to be re-used for place
Reason contaminated soil.Stabilisation/solidification technology refers to that need not a contaminated soil digs out from place in situ,
But directly by stabilisation/solidification medicament injection contaminated soil, stabilisation/curing technology contains two concepts:
Wherein, stabilisation is to be reacted with the stabilization agent of addition by pollutant and be at relative stable
State；Solidification refers to wrap up pollutant, is allowed to be in granular form or big block existence, and then reduces
Pollutant to environment in the risk worked the mischief.
Individually use drip washing in situ and original position stabilisation/solidification can not reach good treatment effect.In situ
Drip washing can thoroughly clear the pollution off, and the initial stage can take away a large amount of pollutant, but the later stage is due in soil thin
Grain is leached liquid and takes away, and can form water stream channel, cause leacheate to form short circuit, and effect can be worse and worse.
Stabilisation/solidification contaminant reducing toxicity and mobility in situ, and pollutant are isolated with external environment,
But simply temporarily change form of poluttants, the most thoroughly remove pollution, use and inject stabilisation/solidification in situ
During medicament, processing procedure is affected by soil permeability is uneven, and stabilisation/solidification medicament is difficult to have influence on low
Infiltrative soil horizon.The present invention proposes, by original position drip washing and original position stabilisation/solidification United Technologies, playing
Two kinds of technology a little while make up respective deficiency.
Summary of the invention
(1) to solve the technical problem that
In order to solve the problems referred to above, the present invention proposes a kind of contaminated soil in-situ combination restorative procedure, uses former
Position drip washing and in situ stabilisation solidification are used in combination, and combine the excellent of drip washing in situ and stabilisation/solidification in situ
Point, compensate for again its respective deficiency, and treatment effect is more preferable.
(2) technical scheme
A kind of contaminated soil in-situ combination restorative procedure of the present invention, uses drip washing in situ and original position stabilisation solid
Change is used in combination, including following several steps:
(1) soil in-situ drip washing:
(1.1) send drip washing liquid toward injecting into well, utilize leacheate self gravitation to flow through contaminated soil, pass through
Leacheate dissolves Cr (VI)；
(1.2) leacheate containing pollutant is extracted out by out well, is collected in sewage disposal device；
(1.3) process containing the leacheate of pollutant at sewage disposal device, and return step (1.1) circulation and make
With；
(2) soil in-situ stabilisation:
(2.1) drip washing terminates in situ, is injected by the injection well that drip washing uses in situ by stabilization agent and pollutes
Region；
(2.2) utilize out well to control stabilization agent to flow to, be reduced to relatively remaining in Cr in soil (VI)
For stable Cr (III), stabilization agent returns step (2.1) and recycles；
(3) soil in-situ solidification；
(3.1), after stabilisation terminates in situ, injection well irrigation is utilized to enter firming agent, isolation contaminated sites thing and ring
Border contacts, filling soil space.
As preferably, in step (1.3), described out well percolate Cr (VI) lowering of concentration is to initial concentration
80% after, and amplitude of variation less than 5% time, drip washing terminates in situ.
As preferably, in step (2.2), current are reached by the percolate Cr (VI) collected after contaminated soil
After 0.1mg/L, stabilisation terminates in situ.
(3) beneficial effect
Compared with prior art, it has the advantages that a kind of contaminated soil of the present invention to the present invention
In-situ combination restorative procedure, will drip washing and original position stabilisation/curing technology be used in combination, its situ in situ
Stabilisation/solidification is divided into stabilisation and in-situ solidifying two step in situ.The method combines drip washing in situ and original position is steady
The advantage of fixedization/solidification, compensate for again its respective deficiency, and treatment effect is more preferable: 1. drip washing can carry in situ
Walk major part pollutant, Gu in lessivation fine grained be pulled away the path of formation just can as stabilisation/
The passage of chemical medicine agent so that stabilisation solidification pharmacy effect is in hypotonicity soil；2. original position static stabilization
In the small part pollutant that original position drip washing can not be removed, by injecting the existence of stabilization agent conversion pollutant
Form, reduces mobility and the biological activity of pollutant；3. in-situ solidifying is possible not only to completely cut off contaminated sites
Thing contacts with environment, and firming agent can be filled and be produced interstices of soil because of drip washing, ensures that the safety in place is steady
Qualitative.
Detailed description of the invention
Embodiment:
As a example by certain pollution of chromium place, pollution range length about 220m, wide about 25m, thickness about 6m, underground
Water water level is about at about 4-8m, and contaminated soil of site prepares leachate, leachate sexavalence according to HJ/T299
Chromium concn scope is 1.5～65mg/L.Specific embodiments is as follows:
(1) soil in-situ drip washing:
(1.1) send drip washing liquid toward injecting into well, utilize leacheate self gravitation to flow through contaminated soil, pass through
Leacheate dissolves Cr (VI), and the pollutant in soil are transferred to accelerate in soil in liquid phase；
(1.2) leacheate containing pollutant is extracted out by out well, is collected in sewage disposal device；
(1.3) process containing the leacheate of pollutant at sewage disposal device, and return step (1.1) circulation and make
With, after repeatedly drip washing, after out well percolate Cr (VI) lowering of concentration to the 80% of initial concentration, front
When the amplitude of variation of rear three Cr (VI) concentration is less than 5%, drip washing terminates in situ；
(2) soil in-situ stabilisation:
(2.1) drip washing terminates in situ, is injected by the injection well that drip washing uses in situ by stabilization agent and pollutes
Region；
(2.2) utilize out well to control stabilization agent to flow to, be reduced to relatively remaining in Cr in soil (VI)
For stable Cr (III), form compound hard to tolerate, thus reduce chromium animal migration in the environment and biology
Utilizability, returns step (2.1) afterwards and recycles, the diafiltration collected after current are by contaminated soil
After liquid Cr (VI) reaches 0.1mg/L, stabilisation terminates in situ；
(3) soil in-situ solidification；
(3.1), after stabilisation terminates in situ, injection well irrigation is utilized to enter firming agent, isolation contaminated sites thing and ring
Border contacts, and filling soil space prevents place from subsiding.
A kind of contaminated soil in-situ combination restorative procedure of the present invention, Gu closed in situ drip washing and in situ stabilisation/
The advantage changed, compensate for again its respective deficiency, and treatment effect is more preferable: 1. drip washing can take away big portion in situ
Point pollutant, in lessivation fine grained be pulled away the path of formation just can be as stabilisation/solidification medicament
Passage so that stabilisation solidification pharmacy effect in hypotonicity soil；2. original position static stabilization is in situ
The small part pollutant that drip washing can not be removed, by injecting the existing forms of stabilization agent conversion pollutant,
Reduce mobility and the biological activity of pollutant；3. in-situ solidifying is possible not only to completely cut off contaminated sites thing and ring
Border contacts, and firming agent can be filled and be produced interstices of soil because of drip washing, ensures the security and stability in place.
Embodiment described above is only to be described the preferred embodiment of the present invention, not to this
Bright spirit and scope are defined.On the premise of without departing from design concept of the present invention, this area ordinary people
Member's various modification of making technical scheme and improvement, all should drop into protection scope of the present invention,
The technology contents that the present invention is claimed, all records in detail in the claims.
Claims (3)
1. a contaminated soil in-situ combination restorative procedure, it is characterised in that: use drip washing in situ and original position steady
Surely change solidification to be used in combination, including following several steps:
(1) soil in-situ drip washing:
(1.1) send drip washing liquid toward injecting into well, utilize leacheate self gravitation to flow through contaminated soil, pass through
Leacheate dissolves Cr (VI)；
(1.2) leacheate containing pollutant is extracted out by out well, is collected in sewage disposal device；
(1.3) process containing the leacheate of pollutant at sewage disposal device, and return step (1.1) circulation and make
With；
(2) soil in-situ stabilisation:
(2.1) drip washing terminates in situ, is injected by the injection well that drip washing uses in situ by stabilization agent and pollutes
Region；
(2.2) utilize out well to control stabilization agent to flow to, be reduced to relatively remaining in Cr in soil (VI)
For stable Cr (III), stabilization agent returns step (2.1) and recycles；
(3) soil in-situ solidification；
(3.1), after stabilisation terminates in situ, injection well irrigation is utilized to enter firming agent, isolation contaminated sites thing and ring
Border contacts, filling soil space.
Contaminated soil in-situ combination restorative procedure the most according to claim 1, it is characterised in that: step
(1.3) in, after described out well percolate Cr (VI) lowering of concentration to the 80% of initial concentration, and change width
When degree is less than 5%, drip washing terminates in situ.
Contaminated soil in-situ combination restorative procedure the most according to claim 1, it is characterised in that: step
(2.2) in, after current reach 0.1mg/L by the percolate Cr (VI) collected after contaminated soil, the most steady
Determining terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013435.XA CN103722007B (en) | 2014-01-13 | 2014-01-13 | A kind of contaminated soil in-situ combination restorative procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410013435.XA CN103722007B (en) | 2014-01-13 | 2014-01-13 | A kind of contaminated soil in-situ combination restorative procedure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103722007A CN103722007A (en) | 2014-04-16 |
| CN103722007B true CN103722007B (en) | 2016-08-17 |
Family
ID=50446438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410013435.XA Expired - Fee Related CN103722007B (en) | 2014-01-13 | 2014-01-13 | A kind of contaminated soil in-situ combination restorative procedure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103722007B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174647B (en) * | 2014-09-16 | 2015-07-01 | 中国环境监测总站 | In-situ remediation method for soil polluted by biological polypeptide product production wastewater |
| CN104624624A (en) * | 2014-12-19 | 2015-05-20 | 湖南凯天重金属污染治理工程有限公司 | Method for restoring severe chromium contaminated soil through in-situ elution and curing-stabilizing |
| CN106903152B (en) * | 2017-03-15 | 2020-02-11 | 湖南农业大学 | Method for separating mineral material or soil surface protein |
| CN106890847B (en) * | 2017-04-06 | 2018-05-01 | 浙江益壤环保科技有限公司 | A kind of soil repair system and method based on process integration |
| CN107282620A (en) * | 2017-08-11 | 2017-10-24 | 北京高能时代环境技术股份有限公司 | Multiple-layer horizontal well washed off soil restorative procedure and device in situ |
| CN107903903B (en) * | 2017-11-14 | 2020-02-07 | 四川长虹格润环保科技股份有限公司 | Solidification and stabilization medicament for repairing beryllium contaminated soil and sediment |
| CN108817060A (en) * | 2018-08-03 | 2018-11-16 | 王子豪 | The method of efficient restoration of soil polluted by heavy metal |
| CN109809657A (en) * | 2019-03-27 | 2019-05-28 | 煜环环境科技有限公司 | A kind of sludge containing heavy metal processing disposition integrated approach |
| CN112934938A (en) * | 2021-01-29 | 2021-06-11 | 国网河北省电力有限公司衡水供电分公司 | In-situ leaching repairing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708501A (en) * | 2009-12-02 | 2010-05-19 | 中国环境科学研究院 | Two-stage countercurrent washing medicament addition stabilization combined restoration method of chromium polluted soil |
| CN203061547U (en) * | 2013-01-25 | 2013-07-17 | 北京中地泓科环境科技有限公司 | Comprehensive repair system for groundwater chromium pollution fields |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003285044A (en) * | 2002-03-28 | 2003-10-07 | Sumitomo Mitsui Construction Co Ltd | Method for cleaning polluted soil |
| US20050245783A1 (en) * | 2004-04-29 | 2005-11-03 | Forrester Keith E | Method for stabilization of chromium |
| CN102228901A (en) * | 2010-06-11 | 2011-11-02 | 中国地质大学（北京） | Treatment method of chromium-polluted soil |
| CN102652956B (en) * | 2012-04-19 | 2016-06-22 | 中国环境科学研究院 | A kind of chromium pollution soil in-situ drip washing processing method |
| CN103084385A (en) * | 2013-01-28 | 2013-05-08 | 韩清洁 | Repairation method of chromium-polluted soil and corresponding equipment thereof |
-
2014
- 2014-01-13 CN CN201410013435.XA patent/CN103722007B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101708501A (en) * | 2009-12-02 | 2010-05-19 | 中国环境科学研究院 | Two-stage countercurrent washing medicament addition stabilization combined restoration method of chromium polluted soil |
| CN203061547U (en) * | 2013-01-25 | 2013-07-17 | 北京中地泓科环境科技有限公司 | Comprehensive repair system for groundwater chromium pollution fields |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103722007A (en) | 2014-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103722007B (en) | A kind of contaminated soil in-situ combination restorative procedure | |
| CN204276513U (en) | A kind of contaminated soil and underground water integration circulation well repair system | |
| CN105598144B (en) | A kind of restorative procedure of contaminated soil | |
| CN104741369B (en) | The method that chromium-polluted soil is repaired with molasses | |
| CN104801536B (en) | Chemical leaching is utilized to be combined the method repairing contaminated with halogenated hydrocarbons place with microbial | |
| CN105945045A (en) | In-situ vertical well leaching repair system and application method | |
| CN106348418A (en) | In-situ chemical-biological combined restoration method of chromium polluted underground water | |
| CN102091716A (en) | Polluted composite soil repairing method | |
| CN103639193A (en) | Restoration method for organically polluted site soil through circular in-situ chemical oxidation | |
| EP1361002A2 (en) | Method and apparatus for purifying a layer of contaminated soil | |
| CN103934264A (en) | In-situ reduction restoration method for chromium contaminated soil | |
| CN206122322U (en) | Utilize plant to absorb water separation and pollute device of heavy metal in soil | |
| CN104399740B (en) | A kind of horizontal sealing Rotating fields and its method for contaminated soil remediation | |
| CN103736723B (en) | Heavy-metal contaminated soil restorative procedure integrated with underground water | |
| Farooqi et al. | Restoration and preservation of degraded soils for crop production | |
| CN103846275A (en) | Stable solidification treatment and sanitary landfill disposal method for polluted soil | |
| CN106734186A (en) | A kind of oil-polluted soils in-situ remediation method | |
| CN103861868A (en) | Remediation and in-situ backfill method of polluted soil through stable solidification technology | |
| CN110106860A (en) | A method of taking into account heavy metal polluted soil ground restoration and discharging consolidation processing | |
| CN110404956A (en) | A kind of soil and underground water complex repairation system and restorative procedure | |
| CN204940363U (en) | A kind of groundwater pollution treatment system | |
| CN105602574B (en) | A kind of heavy metal polluted soil solidifies the preparation method and application of stabilizer | |
| CN103894408A (en) | Contaminated soil stabilizing and solidifying treatment and secure backfilling disposal method | |
| CN111733890A (en) | Polluted underground water blocking treatment method | |
| CN103894410A (en) | Method for carrying out stabilizing and solidifying treatment on contaminated soil and applying soil to subgrade fill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Han Qingjie Inventor after: Guo Bei Inventor after: Wang Tingtao Inventor after: Sun Guang Inventor after: Chen Feng Inventor after: Jia Shijie Inventor before: Han Qingjie |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170627 Address after: 266000 Shandong province Qingdao city Yanan Road No. 39 Patentee after: QINGDAO XINTIANDI ENVIRONMENTAL PROTECTION CO., LTD. Address before: Yanan City, Shandong province Qingdao City Road 266000 No. 39 Patentee before: Han Qingjie |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20180113 |