CN103785681A - Method for efficiently remedying heavy metal ion contamination in soil - Google Patents
Method for efficiently remedying heavy metal ion contamination in soil Download PDFInfo
- Publication number
- CN103785681A CN103785681A CN201410055507.7A CN201410055507A CN103785681A CN 103785681 A CN103785681 A CN 103785681A CN 201410055507 A CN201410055507 A CN 201410055507A CN 103785681 A CN103785681 A CN 103785681A
- Authority
- CN
- China
- Prior art keywords
- soil
- leacheate
- fluid injection
- injection well
- vacuum
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a method for efficiently remedying heavy metal ion contamination in soil, and belongs to the technical field of soil restoration. The method comprises the steps of firstly carrying out leacheate filling well construction on contamination soil, enabling a leacheate in a filling well to move in the soil through a vacuum prepressing technology, and discharging the leacheate after reaction through a drain plate; recycling the leacheate after treatment, and enabling the content of the heavy metal ions in the soil to achieve an expected target. Compared with the traditional in-situ remedying method, the technology utilizes the vacuum prepressing process to form pumping action on a reagent, the permeation of the reagent in the soil is accelerated, and the problems that the traditional method is not suitable for the soil which has high viscidity and low osmotic coefficient are solved. The method provided by the invention has the advantages that the cost is low, the remedying effect is good and the like.
Description
Technical field
The present invention relates to a kind of heavy-metal pollution method in efficient rehabilitating soil, belong to soil remediation technical field.
Background technology
Along with expanding economy, the contaminated place of China is increasing, and in numerous contaminated sites, the shared ratio in the place of heavy-metal pollution is listed as also increasing.Heavy metal ion is difficult to by the microorganism natural degradation in soil, can be by food chain at animal and human's cylinder accumulation, and the life safety to the mankind and healthyly caused tremendous influence.Along with the enhancing of people's environmental consciousness and health perception, the requirement that heavy-metal pollution is repaired is also day by day urgent.Since 12, country has promulgated a series of laws and regulations in succession, and guiding people strengthen the reparation to heavy metal pollution.
At present, conventional heavy-metal pollution restorative procedure has following several:
(1) phytoremediation: by screening, heavy metal ion is had the plant of very strong assimilation effect, heavy metal ion is entered in plant.But the method can only be processed the place of slight heavy-metal pollution, and treatment cycle is very long.
(2) soil removal and replacement: by outward transport cleaning soil, and be subject to contaminated soil with its replacement.Although this kind of method treatment effect is good, finally do not eliminate heavy metal pollution, just realize the transfer of polluter, the shortcoming such as the method quantities is large in addition, disposal cost height has also seriously limited it and has applied.
(3) chemical leaching method is repaired: the method is used chemical reagent washed off soil, heavy metal ion in soil is dissolved in water and by water and takes soil out of.Traditional chemical leaching repairing method is all showering conventionally, soil need to be excavated out with drip washing machinery and process, and quantities is large, treatment scale is little; Minority in-situ remediation method is all also to allow eluent automatically infiltrate in contaminated soil, and this kind of method infiltration efficiency is low, can only in the soil of good penetrability, use, and the soil high to the content of organic matter, viscosity is large, infiltration coefficient is low does not almost act on.
Summary of the invention
The object of the invention is to repair from polluting the problem existing for existing heavy metal, propose a kind of cost low, effective, can construct on a large scale, and can be large in viscosity, the technique applied in the soil of poor permeability.
According to technical scheme provided by the invention, heavy-metal pollution method in efficient rehabilitating soil, step is:
(1) processing of plastic draining board: smear plastic draining board one end 20-30 centimetre with 220-250 ℃ of pitch, after natural drying, 20-30 centimetre inside, drain bar one end can allow water flow, outside nonwoven does not allow gas to pass through;
(2) setting of fluid injection well and plastic draining board: fluid injection well is set in pending contaminated soil, and injects leacheate in fluid injection well, keep leacheate liquid level higher than the aboveground osculum of fluid injection; Around fluid injection well, plug some plastic draining boards, treated part is exposed outside soil, and lays vacuum lead;
(3) vacuum preloading: by vacuum lead, system is vacuumized, the leacheate accelerating in fluid injection well moves in soil, and by drain bar, the leacheate reacting is got rid of;
(4) regeneration is processed: by the processing of regenerate of the leacheate of collecting after vacuum preloading excessive vulcanized sodium, calper calcium peroxide etc., heavy metal ion formation precipitates separated, and the leacheate obtaining recycles;
(5) post processing: after chemical leaching finishes, inject running water in fluid injection well, by vacuum preloading effect, make leacheate residual in soil be taken out of the soil body.
The even branch of described plastic draining board is in fluid injection well surrounding, and is divided into two groups of layings, is equipped with independently vacuum lead, and every group is used alternatingly.
The spacing of described two groups of drain bars is that the spacing between 30-50 centimetre, two groups of drain bars and fluid injection well is 30-60 centimetre.
Described fluid injection well is a root bottom part sealing, lower end pvc pipe with holes, pipe outer wrapping layer of non-woven fabric, and the liquid level in fluid injection well remains unchanged, and liquid level is higher than the aperture on pvc pipe, forms water seal, thereby guarantees maintenance negative pressure in the soil body.
Described leacheate is oxalic acid and EDTA, and the concentration of oxalic acid is 0.1-0.3mol/L, and the concentration of EDTA is 0.01-0.03mol/L, and the volume ratio of leacheate and soil is 1-4:1.
The pumpdown time of described vacuum preloading is 7-30d, and vacuum is 0-0.08MPa, by controlling the variation Non-leaching liquid of the vacuum time of staying in soil.
Beneficial effect of the present invention:
(1) compared with traditional original position heavy metal ion reparation, the present invention has overcome conventional method can not be applicable to that viscosity is large, the shortcoming of the soil of poor permeability, utilize vacuum preloading technique to promote the infiltration of leacheate in soil, strengthened removal of heavy metal ions effect; Compared with showering, save a large amount of excacations, can disposable extensive construction.
(2) the water seal effect in treated drain bar and fluid injection well, makes whole system all under condition of negative pressure, and the infiltration efficiency of leacheate is higher; In addition, the specific area of plastic draining board is large, the better effects if of vacuum draw.
(3) two groups of drain bars are used alternatingly, and can make leacheate reach the region outside single evacuation system effect, make whole contaminated soil all be subject to the effect of leacheate, guarantee the removal effect of whole system heavy metal ion.
Accompanying drawing explanation
Fig. 1 is plastic draining board and fluid injection well layout.
Fig. 2 is process chart of the present invention.
Description of reference numerals: 1, first group of drain bar, 2, second group of drain bar, 3, fluid injection well.
The specific embodiment
Certain Electroplate Factory's contaminated soil is repaired: the surface area of contaminated soil to be repaired is 10m
2, pollution depth is 2m, concrete flow process is:
(1) processing of plastic draining board: smear plastic draining board one end 20-30 centimetre with 220-250 ℃ of pitch, after natural drying, 20-30 centimetre inside, drain bar one end can allow water flow, outside nonwoven does not allow gas to pass through;
(2) setting of fluid injection well and plastic draining board: fluid injection well is set in pending contaminated soil, and injects leacheate in fluid injection well, keep leacheate liquid level higher than the aboveground osculum of fluid injection; Around fluid injection well, plug some plastic draining boards, treated part is exposed outside soil, and lays vacuum lead;
(3) vacuum preloading: by vacuum lead, system is vacuumized, the leacheate accelerating in fluid injection well moves in soil, and by drain bar, the leacheate reacting is got rid of;
(4) regeneration is processed: by the processing of regenerate of the leacheate of collecting after vacuum preloading excessive vulcanized sodium, calper calcium peroxide etc., heavy metal ion formation precipitates separated, and the leacheate obtaining recycles; Until heavy metal in soil ion concentration reaches re-set target.
(5) post processing: after chemical leaching finishes, inject running water in fluid injection well, by vacuum preloading effect, make leacheate residual in soil be taken out of the soil body.
The even branch of described plastic draining board is in fluid injection well surrounding, and is divided into two groups of layings, is equipped with independently vacuum lead, and every group is used alternatingly.
The spacing of described first group of drain bar 1 and second group of drain bar 2 is that the spacing between 40 centimeters, first group drain bar 1 and second group of drain bar 2 and fluid injection well 3 is respectively 30 centimeters, 50 centimeters.
Described fluid injection well is a root bottom part sealing, lower end pvc pipe with holes, pipe outer wrapping layer of non-woven fabric, and the liquid level in fluid injection well remains unchanged, and liquid level is higher than the aperture on pvc pipe, forms water seal, thereby guarantees maintenance negative pressure in the soil body.
Described leacheate is oxalic acid and EDTA, and the concentration of oxalic acid is 0.2mol/L, and the concentration of EDTA is 0.02mol/L, and the volume ratio of leacheate and soil is 3:1.
The pumpdown time of described vacuum preloading is 10d, and vacuum is 0.08MPa, by controlling the variation Non-leaching liquid of the vacuum time of staying in soil.
Table 1 is processed the variation of front and back heavy metal in soil ion concentration
Heavy-metal pollution method in efficient rehabilitating soil, step is:
(1) processing of plastic draining board: smear 30 centimeters of plastic draining board one end with 220-250 ℃ of pitch, after natural drying, inside, 30 centimeters of drain bar one end can allow water flow, outside nonwoven does not allow gas to pass through;
(2) setting of fluid injection well and plastic draining board: fluid injection well is set in pending contaminated soil, and injects leacheate in fluid injection well, keep leacheate liquid level higher than the aboveground osculum of fluid injection; Around fluid injection well, plug some plastic draining boards, treated part is exposed outside soil, and lays vacuum lead;
(3) vacuum preloading: by vacuum lead, system is vacuumized, the leacheate accelerating in fluid injection well moves in soil, and by drain bar, the leacheate reacting is got rid of;
(4) regeneration is processed: by the processing of regenerate of the leacheate of collecting after vacuum preloading excessive vulcanized sodium, calper calcium peroxide etc., heavy metal ion formation precipitates separated, and the leacheate obtaining recycles;
(5) post processing: after chemical leaching finishes, inject running water in fluid injection well, by vacuum preloading effect, make leacheate residual in soil be taken out of the soil body.
The even branch of described plastic draining board is in fluid injection well surrounding, and is divided into two groups of layings, is equipped with independently vacuum lead, and every group is used alternatingly.
The spacing of described first group of drain bar 1 and second group of drain bar 2 is that the spacing between 40 centimeters, first group drain bar 1 and second group of drain bar 2 and fluid injection well 3 is respectively 30 centimeters, 50 centimeters.
Described fluid injection well is a root bottom part sealing, lower end pvc pipe with holes, pipe outer wrapping layer of non-woven fabric, and the liquid level in fluid injection well remains unchanged, and liquid level is higher than the aperture on pvc pipe, forms water seal, thereby guarantees maintenance negative pressure in the soil body.
Described leacheate is oxalic acid and EDTA, and the concentration of oxalic acid is 0.2mol/L, and the concentration of EDTA is 0.02mol/L, and the volume ratio of leacheate and soil is 3:1.
The pumpdown time of described vacuum preloading is 20d, and vacuum is 0.08MPa, by controlling the variation Non-leaching liquid of the vacuum time of staying in soil.
Table 2 is processed the variation of front and back heavy metal in soil ion concentration
Heavy-metal pollution method in efficient rehabilitating soil, step is:
(1) processing of plastic draining board: smear 25 centimeters of plastic draining board one end with 220-250 ℃ of pitch, after natural drying, inside, 25 centimeters of drain bar one end can allow water flow, outside nonwoven does not allow gas to pass through;
(2) setting of fluid injection well and plastic draining board: fluid injection well is set in pending contaminated soil, and injects leacheate in fluid injection well, keep leacheate liquid level higher than the aboveground osculum of fluid injection; Around fluid injection well, plug some plastic draining boards, treated part is exposed outside soil, and lays vacuum lead;
(3) vacuum preloading: by vacuum lead, system is vacuumized, the leacheate accelerating in fluid injection well moves in soil, and by drain bar, the leacheate reacting is got rid of;
(4) regeneration is processed: by the processing of regenerate of the leacheate of collecting after vacuum preloading excessive vulcanized sodium, calper calcium peroxide etc., heavy metal ion formation precipitates separated, and the leacheate obtaining recycles;
(5) post processing: after chemical leaching finishes, inject running water in fluid injection well, by vacuum preloading effect, make leacheate residual in soil be taken out of the soil body.
The even branch of described plastic draining board is in fluid injection well surrounding, and is divided into two groups of layings, is equipped with independently vacuum lead, and every group is used alternatingly.
The spacing of described first group of drain bar 1 and second group of drain bar 2 is that the spacing between 40 centimeters, first group drain bar 1 and second group of drain bar 2 and fluid injection well 3 is respectively 30 centimeters, 50 centimeters.
Described fluid injection well is a root bottom part sealing, lower end pvc pipe with holes, pipe outer wrapping layer of non-woven fabric, and the liquid level in fluid injection well remains unchanged, and liquid level is higher than the aperture on pvc pipe, forms water seal, thereby guarantees maintenance negative pressure in the soil body.
Described leacheate is oxalic acid and EDTA, and the concentration of oxalic acid is 0.2mol/L, and the concentration of EDTA is 0.02mol/L, and the volume ratio of leacheate and soil is 3:1.
The pumpdown time of described vacuum preloading is 30d, and vacuum is 0.08MPa, by controlling the variation Non-leaching liquid of the vacuum time of staying in soil.
Table 3 is processed the variation of front and back heavy metal in soil ion concentration
Embodiment 4
Heavy-metal pollution method in efficient rehabilitating soil, step is:
(1) processing of plastic draining board: smear 25 centimeters of plastic draining board one end with 220-250 ℃ of pitch, after natural drying, inside, 25 centimeters of drain bar one end can allow water flow, outside nonwoven does not allow gas to pass through;
(2) setting of fluid injection well and plastic draining board: fluid injection well is set in pending contaminated soil, and injects leacheate in fluid injection well, keep leacheate liquid level higher than the aboveground osculum of fluid injection; Around fluid injection well, plug some plastic draining boards, treated part is exposed outside soil, and lays vacuum lead;
(3) vacuum preloading: by vacuum lead, system is vacuumized, the leacheate accelerating in fluid injection well moves in soil, and by drain bar, the leacheate reacting is got rid of;
(4) regeneration is processed: by the processing of regenerate of the leacheate of collecting after vacuum preloading excessive vulcanized sodium, calper calcium peroxide etc., heavy metal ion formation precipitates separated, and the leacheate obtaining recycles;
(5) post processing: after chemical leaching finishes, inject running water in fluid injection well, by vacuum preloading effect, make leacheate residual in soil be taken out of the soil body.
The even branch of described plastic draining board is in fluid injection well surrounding, and is divided into two groups of layings, is equipped with independently vacuum lead, and every group is used alternatingly.
The spacing of described first group of drain bar 1 and second group of drain bar 2 is that the spacing between 40 centimeters, first group drain bar 1 and second group of drain bar 2 and fluid injection well 3 is respectively 30 centimeters, 50 centimeters.
Described fluid injection well is a root bottom part sealing, lower end pvc pipe with holes, pipe outer wrapping layer of non-woven fabric, and the liquid level in fluid injection well remains unchanged, and liquid level is higher than the aperture on pvc pipe, forms water seal, thereby guarantees maintenance negative pressure in the soil body.
Described leacheate is oxalic acid and EDTA, and the concentration of oxalic acid is 0.1mol/L, and the concentration of EDTA is 0.01mol/L, and the volume ratio of leacheate and soil is 3:1.
The pumpdown time of described vacuum preloading is 20d, and vacuum is 0.08MPa, by controlling the variation Non-leaching liquid of the vacuum time of staying in soil.
Table 4 is processed the variation of front and back heavy metal in soil ion concentration
Embodiment 5
Heavy-metal pollution method in efficient rehabilitating soil, step is:
(1) processing of plastic draining board: smear 25 centimeters of plastic draining board one end with 220-250 ℃ of pitch, after natural drying, inside, 25 centimeters of drain bar one end can allow water flow, outside nonwoven does not allow gas to pass through;
(2) setting of fluid injection well and plastic draining board: fluid injection well is set in pending contaminated soil, and injects leacheate in fluid injection well, keep leacheate liquid level higher than the aboveground osculum of fluid injection; Around fluid injection well, plug some plastic draining boards, treated part is exposed outside soil, and lays vacuum lead;
(3) vacuum preloading: by vacuum lead, system is vacuumized, the leacheate accelerating in fluid injection well moves in soil, and by drain bar, the leacheate reacting is got rid of;
(4) regeneration is processed: by the processing of regenerate of the leacheate of collecting after vacuum preloading excessive vulcanized sodium, calper calcium peroxide etc., heavy metal ion formation precipitates separated, and the leacheate obtaining recycles;
(5) post processing: after chemical leaching finishes, inject running water in fluid injection well, by vacuum preloading effect, make leacheate residual in soil be taken out of the soil body.
The even branch of described plastic draining board is in fluid injection well surrounding, and is divided into two groups of layings, is equipped with independently vacuum lead, and every group is used alternatingly.
The spacing of described first group of drain bar 1 and second group of drain bar 2 is that the spacing between 40 centimeters, first group drain bar 1 and second group of drain bar 2 and fluid injection well 3 is respectively 30 centimeters, 50 centimeters.
Described fluid injection well is a root bottom part sealing, lower end pvc pipe with holes, pipe outer wrapping layer of non-woven fabric, and the liquid level in fluid injection well remains unchanged, and liquid level is higher than the aperture on pvc pipe, forms water seal, thereby guarantees maintenance negative pressure in the soil body.
Described leacheate is oxalic acid and EDTA, and the concentration of oxalic acid is 0.3mol/L, and the concentration of EDTA is 0.03mol/L, and the volume ratio of leacheate and soil is 3:1.
The pumpdown time of described vacuum preloading is 30d, and vacuum is 0.08MPa, by controlling the variation Non-leaching liquid of the vacuum time of staying in soil.
Table 5 is processed the variation of front and back heavy metal in soil ion concentration
Claims (6)
1. heavy-metal pollution method in efficient rehabilitating soil, is characterized in that step is:
(1) processing of plastic draining board: smear plastic draining board one end 20-30 centimetre with 220-250 ℃ of pitch, after natural drying, 20-30 centimetre inside in drain bar one end allows water flow, and outside nonwoven does not allow gas to pass through;
(2) setting of fluid injection well and plastic draining board: fluid injection well is set in pending contaminated soil, and injects leacheate in fluid injection well, keep leacheate liquid level higher than the aboveground osculum of fluid injection; Around fluid injection well, plug some plastic draining boards, treated part is exposed outside soil, and lays vacuum lead;
(3) vacuum preloading: by vacuum lead, system is vacuumized, the leacheate accelerating in fluid injection well moves in soil, and by drain bar, the leacheate reacting is got rid of;
(4) regeneration is processed: by the processing of regenerate of the leacheate of collecting after vacuum preloading excessive vulcanized sodium and calper calcium peroxide, heavy metal ion formation precipitates separated, and the leacheate obtaining recycles;
(5) post processing: after regeneration processing finishes, inject running water in fluid injection well, by vacuum preloading effect, make leacheate residual in soil be taken out of the soil body.
2. heavy-metal pollution method in efficient rehabilitating soil as claimed in claim 1, is characterized in that: the even branch of described plastic draining board is in fluid injection well surrounding, and is divided into two groups of layings, is equipped with independently vacuum lead, and every group is used alternatingly.
3. heavy-metal pollution method in efficient rehabilitating soil as claimed in claim 2, is characterized in that: the spacing of described two groups of drain bars is that the spacing between 30-50 centimetre, two groups of drain bars and fluid injection well is 30-60 centimetre.
4. heavy-metal pollution method in efficient rehabilitating soil as claimed in claim 1, it is characterized in that: described fluid injection well is a root bottom part sealing, lower end pvc pipe with holes, pipe outer wrapping layer of non-woven fabric, liquid level in fluid injection well remains unchanged, and liquid level is higher than the aperture on pvc pipe, form water seal, thereby guarantee maintenance negative pressure in the soil body.
5. heavy-metal pollution method in efficient rehabilitating soil as claimed in claim 1, it is characterized in that: described leacheate is oxalic acid and EDTA, the concentration of oxalic acid is 0.1-0.3mol/L, and the concentration of EDTA is 0.01-0.03mol/L, and the volume ratio of leacheate and soil is 1-4:1.
6. heavy-metal pollution method in efficient rehabilitating soil as claimed in claim 1, it is characterized in that: the pumpdown time of described vacuum preloading is 7-30d, vacuum is 0-0.08MPa, by controlling the variation Non-leaching liquid of the vacuum time of staying in soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410055507.7A CN103785681B (en) | 2014-02-18 | 2014-02-18 | Method for efficiently remedying heavy metal ion contamination in soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410055507.7A CN103785681B (en) | 2014-02-18 | 2014-02-18 | Method for efficiently remedying heavy metal ion contamination in soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103785681A true CN103785681A (en) | 2014-05-14 |
| CN103785681B CN103785681B (en) | 2017-02-08 |
Family
ID=50661976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410055507.7A Active CN103785681B (en) | 2014-02-18 | 2014-02-18 | Method for efficiently remedying heavy metal ion contamination in soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103785681B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433653A (en) * | 2016-09-22 | 2017-02-22 | 北京新源环境有限公司 | Composite eluting agent for restoring Cd and Pb contaminated soil and application method thereof |
| CN106433674A (en) * | 2016-09-20 | 2017-02-22 | 中节能六合天融环保科技有限公司 | Heavy metal compound contaminated soil leaching remediation agent, preparation method thereof and remediation method using same |
| CN106734145A (en) * | 2016-12-19 | 2017-05-31 | 湖南金旅环保股份有限公司 | A kind of combined remediation method of heavy-metal contaminated soil |
| CN106734178A (en) * | 2017-03-07 | 2017-05-31 | 吉林大学 | Comprehensive restoration system and method for polluted site |
| CN109675918A (en) * | 2018-11-01 | 2019-04-26 | 核工业北京化工冶金研究院 | A kind of green eluent original position removal heavy metals in farmland pollution method |
| CN110125158A (en) * | 2018-02-08 | 2019-08-16 | 天津大学 | A kind of method that low level elutes high-order extraction technique processing heavy metal in soil pollution |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007260610A (en) * | 2006-03-29 | 2007-10-11 | Nippon Oil Corp | Cleaning method of contaminated soil |
| US20090080979A1 (en) * | 2007-09-21 | 2009-03-26 | Fruits & Associates, Inc. | System and method for decontaminating soil and groundwater |
| CN102909215A (en) * | 2012-11-13 | 2013-02-06 | 华北电力大学 | Method for repairing soil polluted by heavy metal by combining chemical leaching and bioremediation |
| CN102921718A (en) * | 2012-10-30 | 2013-02-13 | 华北电力大学 | Two-phase vacuum suction device with auxiliary chemical leaching and method for repairing soil thereof |
| JP2014023992A (en) * | 2012-07-25 | 2014-02-06 | Ohbayashi Corp | Method for treating contaminated ground in situ |
-
2014
- 2014-02-18 CN CN201410055507.7A patent/CN103785681B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007260610A (en) * | 2006-03-29 | 2007-10-11 | Nippon Oil Corp | Cleaning method of contaminated soil |
| US20090080979A1 (en) * | 2007-09-21 | 2009-03-26 | Fruits & Associates, Inc. | System and method for decontaminating soil and groundwater |
| JP2014023992A (en) * | 2012-07-25 | 2014-02-06 | Ohbayashi Corp | Method for treating contaminated ground in situ |
| CN102921718A (en) * | 2012-10-30 | 2013-02-13 | 华北电力大学 | Two-phase vacuum suction device with auxiliary chemical leaching and method for repairing soil thereof |
| CN102909215A (en) * | 2012-11-13 | 2013-02-06 | 华北电力大学 | Method for repairing soil polluted by heavy metal by combining chemical leaching and bioremediation |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433674A (en) * | 2016-09-20 | 2017-02-22 | 中节能六合天融环保科技有限公司 | Heavy metal compound contaminated soil leaching remediation agent, preparation method thereof and remediation method using same |
| CN106433653A (en) * | 2016-09-22 | 2017-02-22 | 北京新源环境有限公司 | Composite eluting agent for restoring Cd and Pb contaminated soil and application method thereof |
| CN106734145A (en) * | 2016-12-19 | 2017-05-31 | 湖南金旅环保股份有限公司 | A kind of combined remediation method of heavy-metal contaminated soil |
| CN106734178A (en) * | 2017-03-07 | 2017-05-31 | 吉林大学 | Comprehensive restoration system and method for polluted site |
| CN110125158A (en) * | 2018-02-08 | 2019-08-16 | 天津大学 | A kind of method that low level elutes high-order extraction technique processing heavy metal in soil pollution |
| CN109675918A (en) * | 2018-11-01 | 2019-04-26 | 核工业北京化工冶金研究院 | A kind of green eluent original position removal heavy metals in farmland pollution method |
| CN109675918B (en) * | 2018-11-01 | 2021-04-13 | 核工业北京化工冶金研究院 | Method for removing heavy metal pollution of farmland in situ by using green eluting agent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103785681B (en) | 2017-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103785681A (en) | Method for efficiently remedying heavy metal ion contamination in soil | |
| CN103112915B (en) | Circulation well method and device for removing pollutants in underground water | |
| CN104358267B (en) | Vacuum tube well precipitation and disposal method for rapidly restoring in-situ water and soil in polluted place | |
| CN103736722A (en) | In-situ polluted soil leaching system and method | |
| CN104150640B (en) | A kind of three grades of restorative procedures by organic hydrochloric ether polluted underground water and device | |
| CN104858225A (en) | Device and method for washing and electrokinetic-combined remediation of heavy metal contaminated soil | |
| CN105776361A (en) | DNAPL-polluted underground water in-situ remediation system and application method thereof | |
| CN103962372B (en) | A kind of negative electrode approximatioss repairs device and the restorative procedure thereof of caesium contaminated soil | |
| CN104138896B (en) | Original position for contaminated soil takes out note prosthetic device and restorative procedure and installation method | |
| CN105945045A (en) | In-situ vertical well leaching repair system and application method | |
| CN203304274U (en) | Device for intensively treating heavy metal contaminated soil by power-driven method | |
| CN101085450A (en) | Method for treating heavy metal polluted soil | |
| CN103302088A (en) | Method for treating soil pollution in a hierarchically cyclic cleaning manner | |
| CN207325582U (en) | A kind of electric power soil repair system based on solar energy | |
| CN106006771B (en) | Multichannel for polluting water and soil reparation is connected to gang of wells and takes out filling circulating water treatment method | |
| CN103736718A (en) | Electrokinetic remediation method and device of heavy metal contaminated soil | |
| CN204225137U (en) | For the radial well dewatering structure of contaminated water and soil integration in-situ immobilization | |
| CN204710845U (en) | A kind of electronic combine d bioremediation device of drip washing of heavy-metal contaminated soil | |
| CN205096229U (en) | Heavy metal pollution drip washing prosthetic devices | |
| CN112474784A (en) | System combining electric repair and in-situ leaching and repair method | |
| CN205887652U (en) | Utilize microbiological treatment petroleum -contaminated soil's device | |
| CN205773446U (en) | Filling circular water treating system is taken out for polluting the multichannel connection gang of wells of water and soil reparation | |
| CN111018278A (en) | In-situ remediation system and method combining bottom sediment heavy metal pollution treatment with dehydration and solidification | |
| CN204171077U (en) | For the spray site well Precipitation Structure of contaminated water and soil integration in-situ immobilization | |
| CN204247683U (en) | A kind of pollution of chromium place in-situ immobilization dedicated water treating apparatus |
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 | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 180-12 No. 214135 Jiangsu New District of Wuxi City Linghu Avenue Patentee after: Jiangsu Jiangda Environment Technology Co. Ltd. Address before: 180-12 No. 214135 Jiangsu New District of Wuxi City Linghu Avenue Patentee before: JIANGSU JIANGDA URBAN LANDSCAPE CONSTRUCTION CO., LTD. |