CN105032912A - In-situ repair method for shallow-buried heavy metal pollution site - Google Patents

In-situ repair method for shallow-buried heavy metal pollution site Download PDF

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Publication number
CN105032912A
CN105032912A CN201510422347.XA CN201510422347A CN105032912A CN 105032912 A CN105032912 A CN 105032912A CN 201510422347 A CN201510422347 A CN 201510422347A CN 105032912 A CN105032912 A CN 105032912A
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China
Prior art keywords
reparation
hole
ditches
polluted soil
repair
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CN201510422347.XA
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Chinese (zh)
Inventor
李江山
薛强
张亭亭
王平
杜延军
孟思明
许越
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Jiangsu Zhongyi Ecological Soil Institute Co ltd
Wuhan Institute of Rock and Soil Mechanics of CAS
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Jiangsu Zhongyi Ecological Soil Institute Co ltd
Wuhan Institute of Rock and Soil Mechanics of CAS
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Application filed by Jiangsu Zhongyi Ecological Soil Institute Co ltd, Wuhan Institute of Rock and Soil Mechanics of CAS filed Critical Jiangsu Zhongyi Ecological Soil Institute Co ltd
Priority to CN201510422347.XA priority Critical patent/CN105032912A/en
Publication of CN105032912A publication Critical patent/CN105032912A/en
Pending legal-status Critical Current

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Abstract

The invention relates to an in-situ repair method for a shallow-buried heavy metal pollution site and belongs to the technical field of environment engineering. The repair method includes the steps that a processing pit is dug in a set position of the pollution site; multiple repair ditches are constructed at the bottom of the processing pit; multiple repair bags are closely distributed in the repair ditches; polluted soil is evenly laid in the processing pit; a leaching solution is evenly sprayed to the surface of the polluted soil in the processing pit; and the repair bags are removed and repair material mixtures are recovered. By means of the repair method, an in-situ heavy metal leaching and stabilizing technology is adopted, so that heavy metal is removed; efficient leaching agents are adopted for being sprayed to the pollution site repeatedly, the removal rate of the heavy metal in the soil is guaranteed, and a mixture of sludge carbon and attapulgite clay is used as an absorbent to absorb the waste leaching solution; in-situ processing is adopted thoroughly, the heavy metal in the soil is collected while being removed, and the method has the advantages of being convenient to operate, free of secondary pollution, good in processing effect, low in cost and the like.

Description

A kind of shallow embedding heavy metal pollution place in-situ remediation method
Technical field
The present invention relates to field of environment engineering technology, particularly a kind of shallow embedding heavy metal pollution place in-situ remediation method.
Background technology
At present, China is in the critical period of Soil Pollution Control, according to incompletely statistics, the whole nation is by nearly 2,000 ten thousand hectares of the cultivated area of the heavy metal pollutions such as chromium, cadmium, arsenic, lead, it is estimated, the whole nation is every year because the grain of soil pollution reaches 1,200 ten thousand tons, and the direct economic loss caused is more than 20,000,000,000 yuan.Along with the quickening of urbanization, process of industrialization, increasing soil suffers heavy metal pollution, and Urban strategy layout is readjusted, and a large amount of heavy metals is left over place urgent need and administered.Heavy metal pollution of soil has disguise, hysteresis quality and chronicity, heavy metal enters in plant by root system effect, the growth of plant is suppressed, the life and health of the mankind also will be on the hazard indirectly, simultaneously, heavy metal contaminants also can move and be exposed in underground water and air, destroys ecological environment.Contaminated land has to pass through repair process and can again develop, and owing to utilizing " poison ground " constantly to expose without reparation, country payes attention to the improvement of land pollution further, goes into overdrive to administer heavy metal pollution soil.
China's Soil Pollution Control is started late, and relevant technology and equipment falls behind, and country and governments at all levels just invest more, and exploitation has correlation technique and the equipment of independent intellectual property right.At present, for the recovery technique in heavy metal pollution place mainly contain original position and dystopy point.Recovery technique of the prior art is based on showering, comprise curing/stabilizing method, microorganism removal method, chemical method (medicament washing, thermal decomposition etc.), Physical (electric current makes charged ion migration etc.) and planting plants method etc., a large amount of methods is also in the laboratory research stage, and field conduct is more difficult, and technical matters is backwardness relatively, result in that heavy metal polluted soil remediation efficiency is low, cost is high, secondary pollution and environmental risk large.
Summary of the invention
A kind of shallow embedding heavy metal pollution place in-situ remediation method that the application provides, solve or part to solve field conduct difficulty in prior art large, technical matters is backwardness relatively, heavy metal polluted soil remediation efficiency is low, cost is high, secondary pollution and the large technical problem of environmental risk, achieve effective to the repair process of contaminated site, that non-secondary pollution, resource utilization rate are high technique effect.
This application provides a kind of shallow embedding heavy metal pollution place in-situ remediation method, comprise the following steps:
Excavate process hole at the desired location of described contaminated site, produce Polluted Soil;
Many reparation ditches are built in the bottom in described process hole;
Multiple reparation bag close-packed arrays is arranged in described many reparation ditches; The manufacturing process of described reparation bag comprises the following steps:
By municipal sludge carbonization under anaerobism 600 ~ 900 DEG C of conditions, generate mud carbon;
By described mud carbon fragmentation rear mistake 100 mesh sieve, form standard particle diameter mud carbon;
By described standard particle diameter mud carbon and Concave-convex clay rod in mass ratio 1:1 mix, form repair materials mixture;
Described repair materials mixture is loaded in nondegradable permeable bag, forms described reparation bag;
Described Polluted Soil is routed to uniformly in described process hole, is formed and repair hole;
Eluent solution is evenly sprayed onto described surface of repairing Polluted Soil described in hole;
Described multiple reparation bag is taken out from described reparation ditch, described repair materials mixture is taken out recycling from described reparation bag.
As preferably, excavate process hole at the desired location of described contaminated site, generation Polluted Soil, comprising:
Described contaminated site is divided multiple subregion place;
By excavating equipment, described process hole is excavated in subregion place described in one of them; The degree of depth in described process hole is not more than 60cm;
The described subregion place that side is cheated in described process is stacked into by excavating the described Polluted Soil produced;
Wherein, after the described Polluted Soil reparation in a described subregion place completes, the reparation of subregion contaminated sites soil described in other is carried out successively.
As preferably, described many reparation ditches are criss-cross arranged; The adjacent spacing of described many reparation ditches of lateral arrangement controls to be 80 ~ 120cm; The adjacent spacing of described many reparation ditches longitudinally arranged controls to be 80 ~ 120cm;
The cross section of described many reparation ditches is trapezoidal, and described trapezoidal base is 40 ~ 60cm, and top margin is 90 ~ 110cm, and height is 15 ~ 25cm.
As preferably, the adjacent spacing of described many reparation ditches of lateral arrangement controls as 100cm; The adjacent spacing of described many reparation ditches longitudinally arranged controls as 100cm;
Described trapezoidal base is 50cm, and top margin is 100cm, and height is 20cm.
As preferably, described multiple reparation bag close-packed arrays to be arranged in described many reparation ditches, to comprise:
Make described multiple reparation bag; Described multiple reparation bag close-packed arrays is arranged in described many reparation ditches;
Loaded filter is covered on described multiple reparation bag;
Wherein, the full-size of described reparation bag cross section is less than the top margin length in described reparation ditch cross section.
As preferably, described loaded filter is formed by gravel or sand wash;
The THICKNESS CONTROL of described loaded filter is 3 ~ 7cm.
As preferably, described eluent solution is the combination of one or more of water, acid solution, EDTA solution etc.
As preferably, described eluent solution is evenly sprayed onto described surface of repairing Polluted Soil described in hole, comprises:
The described eluent solution of setting quality is divided into many parts;
Many parts of described eluent solutions are evenly sprayed onto several times the surface of the described described Polluted Soil repaired in hole, described Polluted Soil is repaired into clean soil by described eluent solution.
As preferably, described eluent solution is divided into three parts; Three parts of described eluent solutions divide the surface being evenly sprayed onto the described described Polluted Soil repaired in hole for three times.
Shallow embedding heavy metal pollution place provided by the invention in-situ remediation method adopts original position heavy metal drip washing and stabilization technology, by excavating process hole at contaminated site, and many reparation ditches are rationally set in bottom, process hole, the reparation bag with adsorption function is filled in many reparation ditches, again Polluted Soil is backfilling into process hole, eluent solution finally by setting concentration is evenly sprayed onto the surface of Polluted Soil, eluent solution is in the process of subsurface wastewater infiltration system, to be mixed in eluent solution from the heavy metal in Polluted Soil, the reparation bag that final eluent solution is repaired in ditch is fully collected and processes.This restorative procedure repeatedly sprays contaminated site by adopting efficient eluent solution, ensure that the clearance of heavy metal in Polluted Soil, adopt the mixture of mud carbon and Concave-convex clay rod as adsorbent, ensure that eluent solution is completely absorbed, prevent from causing secondary pollution.The application of mud carbon achieves the recycling of mud on the one hand, strengthens the adsorption effect of heavy metal on the other hand.Meanwhile, repair bag and make easy construction, achieve recycling of repair materials.Inverted trapezoidal repairs ditch and loaded filter structure, makes eluent solution fully collect and process, guarantees non-secondary pollution.This restorative procedure adopts in-situ treatment completely, and heavy metal in soil achieves the collection of heavy metal while removing, have easy to operate, non-secondary pollution, treatment effect are good and the advantage such as with low cost.
Accompanying drawing explanation
The flow chart of the shallow embedding heavy metal pollution place in-situ remediation method that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is explained in further detail:
This application provides a kind of shallow embedding heavy metal pollution place in-situ remediation method, solve or part to solve field conduct difficulty in prior art large, technical matters is backwardness relatively, heavy metal polluted soil remediation efficiency is low, cost is high, secondary pollution and the large technical problem of environmental risk, achieve effective to the repair process of contaminated site, that non-secondary pollution, resource utilization rate are high technique effect.
See accompanying drawing 1, this application provides a kind of shallow embedding heavy metal pollution place in-situ remediation method, comprise the following steps:
S1: excavate process hole at the desired location of contaminated site, produce Polluted Soil.
S2: build many reparation ditches in the bottom in process hole.
S3: multiple reparation bag close-packed arrays is arranged in many reparation ditches.
S4: Polluted Soil is routed to uniformly in process hole, is formed and repair hole.The heavy metal polluted soil machine for turning up the soil and harrowing that excavation produces is laid on equably in the hole of the process after step S3 process, oozes under loose uniform soil contributes to eluent solution, guarantee that treatment effect is even.
S5: eluent solution is evenly sprayed onto the surface of repairing Polluted Soil in hole.
S6: after Polluted Soil repairs into clean soil, takes out multiple reparation bag from reparation ditch; Taken out from reparation bag by repair materials mixture and recycle, the repetitive cycling achieving repair materials mixture utilizes, and is conducive to energy-saving and emission-reduction.
Further, step S1 comprises: S101: contaminated site is divided multiple subregion place; S102: by excavating equipment, process hole is excavated in one of them subregion place, as a kind of preferred embodiment, excavating equipment is excavator; The degree of depth in process hole is not more than 60cm; S103: be stacked into the subregion place that side is cheated in process by excavating the Polluted Soil produced.
Wherein, after the Polluted Soil reparation in a subregion place completes, carry out the reparation of other subregion contaminated sites soil successively.Shallow embedding heavy metal pollution place controls as the degree of depth is less than the heavy metal pollution place of 60cm, because soil has retardation to pollutant, most of pollutant mainly concentrates on upper soll layer, for deep layer Polluted Soil, the method does not have applicability, one is owing to excavating difficulty, and two is because leaching liquor penetration depth is limited.Adopt excavator to carry out subregion excavation to shallow embedding heavy metal polluted soil, avoid all excavations to cause place limited space, be deposited in by the heavy metal polluted soil of excavation by excavation place, convenient construction, contributes to the reduction of erection time.
Further, many reparation ditches are criss-cross arranged; The adjacent spacing of many reparation ditches of lateral arrangement controls to be 80 ~ 120cm; The adjacent spacing of many reparation ditches longitudinally arranged controls to be 80 ~ 120cm; The cross section of many reparation ditches is trapezoidal, trapezoidal base is 40 ~ 60cm, and top margin is 90 ~ 110cm, and height is 15 ~ 25cm.As a kind of preferred embodiment, the adjacent spacing of many reparation ditches of lateral arrangement controls, for 100cm, can guarantee the collection of all leaching liquors like this, avoid secondary pollution; The adjacent spacing of many reparation ditches longitudinally arranged controls as 100cm; Trapezoidal base is 50cm, and top margin is 100cm, and height is 20cm; Ditch will be repaired arrange in inverted trapezoidal, and contribute to repairing collecting of ditch upper solution.
Further, step S3 comprises:
S301: make multiple reparation bag; The manufacturing process of repairing bag comprises the following steps: S3011: by municipal sludge carbonization under anaerobism 600 ~ 900 DEG C of conditions, generate mud carbon, it is large that mud carbon has specific area, complex pore structure, the features such as surface functional group is abundant, have stronger adsorptivity to a large amount of heavy metal contaminants, the preparation of mud carbon achieves the recycling of mud.S3012: by mud carbon fragmentation rear mistake 100 mesh sieve, forms standard particle diameter mud carbon.S3013: by standard particle diameter mud carbon and Concave-convex clay rod in mass ratio 1:1 mix, form repair materials mixture, Concave-convex clay rod has stronger adsorption capacity to part heavy metal, and having good filter capacity to the color in eluent solution and impurity, mud carbon and Concave-convex clay rod conbined usage ensure that the absorption of all contaminants in eluent solution and stablize.S3014: be loaded into by repair materials mixture in nondegradable permeable bag, is formed and repairs bag; The full-size of repairing bag cross section is less than the top margin length of repairing ditch cross section, ensures that repairing bag can be filled in reparation ditch smoothly like this.
S302: be arranged in many reparation ditches by multiple reparation bag close-packed arrays, makes every bar repair ditch and is filled with reparation bag, ensure repair process effect.
S303: covered by loaded filter on multiple reparation bag, the THICKNESS CONTROL of loaded filter is 3 ~ 7cm.As a kind of preferred embodiment, loaded filter is formed by gravel or sand wash, and the THICKNESS CONTROL of loaded filter is 5cm.This loaded filter opens the effect of water conservancy diversion, simultaneously to impurity filtrations such as the soil in eluent solution.
Further, step S5 comprises: S501: the eluent solution of setting quality is divided into many parts; S502: the surface many parts of eluent solutions being evenly sprayed onto several times the Polluted Soil repaired in hole, Polluted Soil is repaired into clean soil by eluent solution.As a kind of preferred embodiment, eluent solution is divided into three parts; Three parts of eluent solutions divide the surface being evenly sprayed onto the Polluted Soil repaired in hole for three times.
Wherein, eluent solution is the combination of one or more of water, acid solution, EDTA solution etc., also concrete eluent solution can be selected according to pollutant type, eluent concentration is determined by contaminated site heavy metal concentration, sprays 3 times continuously, the leaching liquor palpus penetration stain soil horizon after each injection, guarantee treatment effect, form clean soil, will repair bag and take out, repair materials mixture is recycled.
Below in conjunction with specific embodiment, the in-situ remediation method that the application provides is further described:
Case study on implementation 1
Adopt excavator to carry out subregion excavation formation processing hole to the Cr Polluted Soil that a buried depth is 30cm, excavate the Cr Polluted Soil produced and be deposited in side, subregion place, build many reparation ditches in the bottom in process hole, repairing ditch cross section is inverted trapezoidal, the wide 40cm in bottom surface, the wide 90cm of end face, high 15cm, and repair ditch crisscross, spacing is 80cm, by municipal sludge carbonization under anaerobism 600 DEG C of conditions, form mud carbon, also 100 mesh sieves are crossed by broken for mud carbon, by the standard particle diameter mud carbon after sieving and Concave-convex clay rod in mass ratio 1:1 mix, form repair materials mixture, repair materials mixture is loaded in nondegradable permeable bag, formed and repair bag, the reparation bag close-packed arrays filling mud carbon and Concave-convex clay rod is put into multiple reparation ditch successively, all reparation bags are laid the thick sandy soils of one deck 3cm, then formed and repair hole, be laid in reparation hole equably by excavating the Cr Polluted Soil machine for turning up the soil and harrowing produced, Polluted Soil surface sprinkling running water in reparation hole, divide and spray 3 times for three days, running water meeting penetration stain soil horizon after each sprinkling, form clean soil.Finally, carry out Cr Concentration Testing, be less than 70mg/kg, reach the primary standard in " standard of soil environment quality " (GB15618-1995) the soil after repairing, will repair bag and take out, repair materials mixture is recycled.
Case study on implementation 2
Adopt excavator to carry out subregion excavation formation processing hole to the Pb Polluted Soil that a buried depth is 50cm, excavate the Pb Polluted Soil produced and be deposited in side, subregion place, build many reparation ditches in the bottom in process hole, repairing ditch cross section is inverted trapezoidal, the wide 50cm in bottom surface, the wide 100cm of end face, high 20cm, and repair ditch crisscross, spacing is 100cm, by municipal sludge carbonization under anaerobism 600 DEG C of conditions, form mud carbon, also 100 mesh sieves are crossed by broken for mud carbon, by the standard particle diameter mud carbon after sieving and Concave-convex clay rod in mass ratio 1:1 mix, form repair materials mixture, repair materials mixture is loaded in nondegradable permeable bag, formed and repair bag, the reparation bag close-packed arrays filling mud carbon and Concave-convex clay rod is put into multiple reparation ditch successively, all reparation bags are laid the thick gravel layer of one deck 5cm, then formed and repair hole, be laid in reparation hole equably by excavating the Pb Polluted Soil machine for turning up the soil and harrowing produced, Polluted Soil surface sprinkling 0.01mol/LEDTA solution in reparation hole, divide and spray 3 times for three days, eluent solution meeting penetration stain soil horizon after each sprinkling, form clean soil.Finally, carry out Pb Concentration Testing, be less than 100mg/kg, reach the secondary standard in " standard of soil environment quality " (GB15618-1995) the soil after repairing, will repair bag and take out, repair materials mixture is recycled.
Case study on implementation 3
Adopt excavator to carry out subregion excavation formation processing hole to Cu, Zn Polluted Soil that a buried depth is 60cm, excavate the Polluted Soil produced and be deposited in side, subregion place, build many reparation ditches in the bottom in process hole, repairing ditch cross section is inverted trapezoidal, the wide 60cm in bottom surface, the wide 110cm of end face, high 25cm, and repair ditch crisscross, spacing is 120cm, by municipal sludge carbonization under anaerobism 600 DEG C of conditions, form mud carbon, also 100 mesh sieves are crossed by broken for mud carbon, by the standard particle diameter mud carbon after sieving and Concave-convex clay rod in mass ratio 1:1 mix, form repair materials mixture, repair materials mixture is loaded in nondegradable permeable bag, formed and repair bag, the reparation bag close-packed arrays filling mud carbon and Concave-convex clay rod is put into multiple reparation ditch successively, all reparation bags are laid the thick sandy soils of one deck 7cm, then formed and repair hole, be laid in reparation hole equably by excavating the Polluted Soil machine for turning up the soil and harrowing produced, Polluted Soil surface sprinkling 0.005mol/L tartaric acid and 0.01mol/LEDTA solution in reparation hole, divide and spray 3 times for three days, eluent solution meeting penetration stain soil horizon after each sprinkling, form clean soil.Finally, carry out Cu, Zn Concentration Testing, be all less than 100mg/kg, reach the primary standard in " standard of soil environment quality " (GB15618-1995) the soil after repairing, will repair bag and take out, repair materials mixture is recycled.
Shallow embedding heavy metal pollution place provided by the invention in-situ remediation method adopts original position heavy metal drip washing and stabilization technology, by excavating process hole at contaminated site, and many reparation ditches are rationally set in bottom, process hole, the reparation bag with adsorption function is filled in many reparation ditches, again Polluted Soil is backfilling into process hole, eluent solution finally by setting concentration is evenly sprayed onto the surface of Polluted Soil, eluent solution is in the process of subsurface wastewater infiltration system, to be mixed in eluent solution from the heavy metal in Polluted Soil, the reparation bag that final eluent solution is repaired in ditch is fully collected and processes.This restorative procedure repeatedly sprays contaminated site by adopting efficient eluent solution, ensure that the clearance of heavy metal in Polluted Soil, adopt the mixture of mud carbon and Concave-convex clay rod as adsorbent, ensure that eluent solution is completely absorbed, prevent from causing secondary pollution.The application of mud carbon achieves the recycling of mud on the one hand, strengthens the adsorption effect of heavy metal on the other hand.Meanwhile, repair bag and make easy construction, achieve recycling of repair materials.Inverted trapezoidal repairs ditch and loaded filter structure, makes eluent solution fully collect and process, guarantees non-secondary pollution.This restorative procedure adopts in-situ treatment completely, and heavy metal in soil achieves the collection of heavy metal while removing, have easy to operate, non-secondary pollution, treatment effect are good and the advantage such as with low cost.
Above-described detailed description of the invention; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. a shallow embedding heavy metal pollution place in-situ remediation method, is characterized in that, described restorative procedure comprises the following steps:
Excavate process hole at the desired location of described contaminated site, produce Polluted Soil;
Many reparation ditches are built in the bottom in described process hole;
Multiple reparation bag close-packed arrays is arranged in described many reparation ditches; The manufacturing process of described reparation bag comprises the following steps:
By municipal sludge carbonization under anaerobism 600 ~ 900 DEG C of conditions, generate mud carbon;
By described mud carbon fragmentation rear mistake 100 mesh sieve, form standard particle diameter mud carbon;
By described standard particle diameter mud carbon and Concave-convex clay rod in mass ratio 1:1 mix, form repair materials mixture;
Described repair materials mixture is loaded in nondegradable permeable bag, forms described reparation bag;
Described Polluted Soil is routed to uniformly in described process hole, is formed and repair hole;
Eluent solution is evenly sprayed onto described surface of repairing Polluted Soil described in hole;
Described multiple reparation bag is taken out from described reparation ditch, described repair materials mixture is taken out recycling from described reparation bag.
2. restorative procedure as claimed in claim 1, is characterized in that, excavates process hole, produce Polluted Soil, comprising at the desired location of described contaminated site:
Described contaminated site is divided multiple subregion place;
By excavating equipment, described process hole is excavated in subregion place described in one of them; The degree of depth in described process hole is not more than 60cm;
The described subregion place that side is cheated in described process is stacked into by excavating the described Polluted Soil produced;
Wherein, after the described Polluted Soil reparation in a described subregion place completes, the reparation of subregion contaminated sites soil described in other is carried out successively.
3. restorative procedure as claimed in claim 1, is characterized in that,
Described many reparation ditches are criss-cross arranged; The adjacent spacing of described many reparation ditches of lateral arrangement controls to be 80 ~ 120cm; The adjacent spacing of described many reparation ditches longitudinally arranged controls to be 80 ~ 120cm;
The cross section of described many reparation ditches is trapezoidal, and described trapezoidal base is 40 ~ 60cm, and top margin is 90 ~ 110cm, and height is 15 ~ 25cm.
4. restorative procedure as claimed in claim 3, is characterized in that,
The adjacent spacing of described many reparation ditches of lateral arrangement controls as 100cm; The adjacent spacing of described many reparation ditches longitudinally arranged controls as 100cm;
Described trapezoidal base is 50cm, and top margin is 100cm, and height is 20cm.
5. restorative procedure as claimed in claim 1, is characterized in that, is describedly arranged in described many reparation ditches by multiple reparation bag close-packed arrays, comprising:
Make described multiple reparation bag;
Described multiple reparation bag close-packed arrays is arranged in described many reparation ditches;
Loaded filter is covered on described multiple reparation bag;
Wherein, the full-size of described reparation bag cross section is less than the top margin length in described reparation ditch cross section.
6. restorative procedure as claimed in claim 5, is characterized in that,
Described loaded filter is formed by gravel or sand wash;
The THICKNESS CONTROL of described loaded filter is 3 ~ 7cm.
7. restorative procedure as claimed in claim 1, is characterized in that,
Described eluent solution is the combination of one or more of water, acid solution, EDTA solution etc.
8. restorative procedure as claimed in claim 1, is characterized in that, described eluent solution is evenly sprayed onto the surface of the described described Polluted Soil repaired in hole, comprises:
The described eluent solution of setting quality is divided into many parts;
Many parts of described eluent solutions are evenly sprayed onto several times the surface of the described described Polluted Soil repaired in hole, described Polluted Soil is repaired into clean soil by described eluent solution.
9. restorative procedure as claimed in claim 8, is characterized in that,
Described eluent solution is divided into three parts; Three parts of described eluent solutions divide the surface being evenly sprayed onto the described described Polluted Soil repaired in hole for three times.
CN201510422347.XA 2015-07-17 2015-07-17 In-situ repair method for shallow-buried heavy metal pollution site Pending CN105032912A (en)

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CN106001088A (en) * 2016-05-30 2016-10-12 青岛理工大学 Pb in-situ and heterotopic coupling detoxifying method for heavily-contaminated site based on biogas residues
CN106010542A (en) * 2016-05-27 2016-10-12 兰州交通大学 Sludge charcoal for repairing heavy metal contaminated soil and preparation method of sludge charcoal
CN106040736A (en) * 2016-05-30 2016-10-26 青岛理工大学 Biogas-residue-based in-situ and heterotopic coupling detoxication method for Sb of heavily-polluted site
CN106111689A (en) * 2016-06-27 2016-11-16 安徽金联地矿科技有限公司 A kind of heavy metal pollution of soil restorative procedure
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CN108393342A (en) * 2018-01-30 2018-08-14 上海岩土工程勘察设计研究院有限公司 Sub-region and hierarchical in-situ remediation method suitable for the stirring of Polluted Soil shallow-layer
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CN106010542A (en) * 2016-05-27 2016-10-12 兰州交通大学 Sludge charcoal for repairing heavy metal contaminated soil and preparation method of sludge charcoal
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CN105964684B (en) * 2016-05-30 2021-04-27 青岛理工大学 Heavy pollution site Cd in-situ and ex-situ coupling detoxification method
CN106111689A (en) * 2016-06-27 2016-11-16 安徽金联地矿科技有限公司 A kind of heavy metal pollution of soil restorative procedure
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