CN105013810B - A kind of reparation medicament and restorative procedure for chromium-polluted soil - Google Patents
A kind of reparation medicament and restorative procedure for chromium-polluted soil Download PDFInfo
- Publication number
- CN105013810B CN105013810B CN201410153420.3A CN201410153420A CN105013810B CN 105013810 B CN105013810 B CN 105013810B CN 201410153420 A CN201410153420 A CN 201410153420A CN 105013810 B CN105013810 B CN 105013810B
- Authority
- CN
- China
- Prior art keywords
- chromium
- polluted soil
- medicament
- mass parts
- sodium
- 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.)
- Active
Links
Abstract
The present invention provides a kind of reparation medicament and restorative procedure for chromium-polluted soil, and the composition for repairing medicament includes：1~20 mass parts of 10~70 mass parts of reducing agent, 10~40 mass parts of curing agent and heavy metal precipitator, wherein the curing agent is sodium metasilicate, the heavy metal precipitator is selected from one or both of TMT-15 and Sodium Dimethyldithiocarbamate.Reparation medicament of the present invention compounds various ingredients, and formula is reasonable, strong applicability, efficiently can carry out repair process to chromium-polluted soil, especially carry out in-situ immobilization processing to chromium-polluted soil；For restorative procedure of the present invention using reparations medicament progress in-situ immobilization or showering, this method is simple and practicable, of low cost, short to the repair time of chromium-polluted soil, repairing effect is good.
Description
Technical field
The invention belongs to environmental technology fields, and in particular to a kind of for the reparation medicament of chromium-polluted soil and reparation side
Method.
Background technology
With industrial expansions such as intermetallic composite coating, ferrochrome smelting, plating, process hides, pigment, refractory material and chemical industry and contain
The continuous application of chromium chemical substance, pollution of chromium are largely remained in soil by exploitation, processing, using, processes such as discarded, from
And the problems such as causing soil pollution of chromium in worldwide.Chromium in soil is mainly trivalent chromium and Cr VI, Cr VI
Toxicity is far longer than trivalent chromium, is listed in one of maximum eight kinds of chemical substances of harm to the human body, is internationally recognized three kinds
One of carcinogenic metal object, while being also generally acknowledged one of the 129 kinds of priority pollutants of U.S. EPA, the improvement of chromium-polluted soil and is repaiied
Again therefore by most attention.
Currently, there are mainly two types of the governance ways of chromium-polluted soil：First, chromium is removed from contaminated soil；Second is that changing
Become chromium existing forms in the soil, be trivalent chromium by hexavalent chrome reduction, reducing its transfer ability and biology in the environment can
Usability.Wherein, immobilization restorative procedure is because that can meet in cost and preferably wanting for heavy-metal contaminated soil reparation on the time
It asks and has obtained extensive concern.
The immobilization restorative procedure of chromium-polluted soil can be specifically divided into physics immobilization reparation, chemical immobilization reparation, micro-
Biological fixnig reparation etc..Wherein, the principle of physics immobilization be pollutant is fixed or is encapsulated in using physical method it is closely knit
Inert material in, it includes zeolite, bentonite etc. to make a kind of its stabilized process, common fixative；And microorganism is fixed
Change is to convert, be passivated by microorganism and enriching heavy metal, to improve the biodegradability of soil, fixed-contamination object,
Improve soil.
Chemical immobilization reparation is the property according to pollutant and soil, and suitable fixative is selected to be added to contaminated soil
In, to make pollutant and fixative that certain chemical reaction occur so that the difficult migration of pollutant transformation, low activity substance or
It removes from soil, can usually be realized by adjusting pH value and/or the Eh values of soil.For example, alkaline matter can be passed through
Such as calcareous substance, MgO adjust the pH value of soil, make soil in alkalinity, to reduce the solubility of chromium, promote to form it into
Chromium hydroxide precipitation；In addition the substances such as barium chloride, which can also be added, makes chromium form chromic acid precipitated barium etc..Also, for Cr VI
The features such as solubility is big, strong toxicity, transfer ability in the environment are higher than trivalent chromium, can adjust soil by reducing agent
Hexavalent chrome reduction is trivalent chromium by Eh values, and to reduce its toxicity and transfer ability in envelope, common reducing agent includes
H2S、FeSO4, simple substance Fe etc..
It mostly uses dystopy immobilization repair process greatly to chromium-polluted soil both at home and abroad at present, i.e., chromium-polluted soil is dug
It stirring, mixes with reparation medicament after pick, screening, then carry out backfill maintenance, quantities is big, and engineering time is long, and rehabilitation cost is high,
Its reason may is that it is both domestic and external at present it is most of repair medicaments need to be mixed and stirred for competence exertion with contaminated soil it is preferable
Repairing effect.
Fixation in situ repair process will directly repair medicament and be injected into pollution without being excavated to chromium-polluted soil
In soil, to be repaired to contaminated soil in situ, therefore it is physically easier to perform, cost is relatively more cheap, and
Soil texture will not be destroyed, has obtained extensive concern at present.However, this method only have to light intermediate pollution soil it is certain
Applicability, and it is very limited for the repair process ability of serious pollution soil, it may be with the drug effect of current reparation medicament
It is related.Therefore, if original that is a kind of efficient and being suitable for chromium-polluted soil, particularly chromium serious pollution soil can be developed
Medicament is repaired in position immobilization, will greatly reduce recovery project cost.
Invention content
The present invention provides a kind of reparation medicament for chromium-polluted soil, which compounds various ingredients,
It is formed simply, and formula is scientific and reasonable, strong applicability, especially can be used for counterweight degree chromium-polluted soil and is efficiently repaiied
It is multiple, make the heavy metal chromium complete stability in chromium-polluted soil to lose biological effectiveness.
The present invention also provides a kind of restorative procedures for chromium-polluted soil, use the reparation medicament to pollution of chromium soil
Earth carries out original position or showering, not only simple and practicable, of low cost but also short to the repair time of chromium-polluted soil, reparation
Effect is good.
Provided by the present invention for the reparation medicament of chromium-polluted soil, composition includes：10~70 mass parts of reducing agent are consolidated
1~20 mass parts of 10~40 mass parts of agent and heavy metal precipitator, wherein the curing agent is sodium metasilicate, the heavy metal is heavy
Shallow lake agent is selected from one or both of TMT-15 and Sodium Dimethyldithiocarbamate.
Reparation medicament of the present invention for chromium-polluted soil, by reducing agent, the curing agent and the heavy metal
Precipitating reagent collaboration uses；Wherein, reducing agent mainly plays reduction, for being trivalent chromium by hexavalent chrome reduction；The heavy metal
Precipitating reagent is mainly used for trapping and is reduced the generated trivalent chromic ion of agent reduction, its generation is made to be not readily dissolved in the chelate of water；
The curing agent is mainly used for the chelate of heavy metal precipitator effect generation and the reducing agent restoring generation
Trivalent chromium is cured and is wrapped up, to prevent trivalent chromium to be oxidized to Cr VI again；Mutual collaboration between various ingredients
Function well can make the heavy metal chromium complete stability in chromium-polluted soil to lose biological effectiveness, repairing effect
Well.
The group of TMT-15 of the present invention becomes trithiocyanuric acid trisodium salt, molecular formula C3N3Na3S3, can be normal
Temperature is lower to react rapidly with the chromium in soil, the good chelate of not soluble in water and chemical stability is generated, to reach capture
The purpose of removing heavy metals chromium can pass through common commercially available acquisition.The group of Sodium Dimethyldithiocarbamate of the present invention becomes dimethyl disulfide for ammonia
Base sodium formate, molecular formula are：（CH3）2N CS2Na can pass through common commercially available acquisition.
Further, the composition of the present invention for repairing medicament may include 30~70 mass parts of reducing agent, curing agent 20
5~15 mass parts of~40 mass parts and heavy metal precipitator.In concrete scheme of the present invention, the composition for repairing medicament can be with
Including 5~15 mass parts of 50~70 mass parts of reducing agent, 25~35 mass parts of curing agent and heavy metal precipitator.
Reducing agent of the present invention is can be by hexavalent chrome reduction at the substance of trivalent chromium, such as the reducing agent can be with
Selected from sodium polysulfide, hydrazine hydrate, ferrous sulfate, frerrous chloride, sodium hydrogensulfite, sodium pyrosulfite, sodium thiosulfate, sulfurous acid
It is one or more in sodium and sodium dithionite.
In concrete scheme of the present invention, the reducing agent includes at least sodium polysulfide, can also include further hydration
Hydrazine.The molecular formula of sodium polysulfide of the present invention is Na2Sx, wherein x be 2~5 integer.
Further, in reparation medicament of the present invention, the reducing agent can be sodium polysulfide and hydrazine hydrate, institute
It is sodium metasilicate to state curing agent, and the heavy metal precipitator is TMT-15.Also, the composition for repairing medicament can be：More sulphur
Change 40~60 mass parts of sodium, 5~20 mass parts of hydrazine hydrate, 20~40 mass parts of sodium metasilicate and the mass parts of TMT-155~15.At this
In invention concrete scheme, the composition for repairing medicament can be：40~50 mass parts of sodium polysulfide, 5~215 mass of hydrazine hydrate
Part, 25~35 mass parts of sodium metasilicate and the mass parts of TMT-155~15.
Further, in reparation medicament of the present invention, the heavy metal precipitator may include TMT-15 and good fortune
The quality proportioning of U.S. sodium, the TMT-15 and Sodium Dimethyldithiocarbamate can be 1~3：1, such as 2：1.Specifically, the group for repairing medicament
At can be：40~50 mass parts of sodium polysulfide, 1~10 mass parts of hydrazine hydrate, 30~40 mass parts of sodium metasilicate, TMT-155~
1~10 mass parts of 15 mass parts and Sodium Dimethyldithiocarbamate.
The present invention also provides a kind of restorative procedures for chromium-polluted soil, include the following steps：
1）By any of the above-described reparation medicament and water according to quality proportioning 2~25：100 stir and evenly mix, and liquid is made
Repair medicament；
2）Medicament is repaired using the liquid, in-situ immobilization processing or showering are carried out to chromium-polluted soil to be repaired
Processing, until the chromium content in the chromium-polluted soil is up to standard, wherein the usage amount that the liquid repairs medicament is the pollution of chromium
The 5~20% of soil gross mass.
Specifically, medicine can be repaired to prepare the liquid of different ratio according to the chromium content in chromium-polluted soil to be repaired
Agent, when chromium content is larger, it is higher that liquid repairs drug concentration（I.e. it is larger to repair the content for repairing medicament in medicament for liquid）.This
Outside, the additive amount that medicament can also be repaired by liquid is adjusted, i.e., when the chromium content in chromium-polluted soil is larger, the liquid
The additive amount that body repairs medicament is bigger.
Further, the in-situ immobilization processing specifically comprises the following steps：
211）Injection orifice and detection well are set on chromium-polluted soil to be repaired；
212）Liquid reparation medicament is injected by the injection orifice in chromium-polluted soil, the liquid reparation is made
The whole region of medicament fully penetrated to chromium-polluted soil carries out repair process；
213）It is sampled by the detection well, the chromium content in the chromium-polluted soil through the repair process is detected, by institute
State repair process carry out it is up to standard to chromium content.
Specifically, according to this field Conventional wisdom to the soil types of chromium-polluted soil to be repaired, physicochemical property, infiltration
After the technical indicators such as ability, level of ground water are analyzed, spacing between the position of reasonable design injection orifice, injection orifice and
The position etc. of well is detected, the installation position of the injection orifice should enable the liquid injected through injection orifice reparation medicament fully ooze
Thoroughly to the whole region of chromium-polluted soil.
Also, it is described the repair process is carried out it is up to standard to chromium content, specifically can be by continuing to inject the liquid
It repairs medicament and/or extends the repair process time to carry out.
In-situ immobilization processing of the present invention, makes liquid reparation without excavating chromium-polluted soil to be repaired
Medicament is repaired with chromium-polluted soil under conditions of mixing and stirring, can be under the premise of not destroying soil texture i.e.
It can be effectively by the heavy metal chromium complete stability in chromium-polluted soil, to make it lose biological effectiveness, repaired processing
Soil in chromium Leaching it is low, repairing effect is good.
The restorative procedure for chromium-polluted soil of the present invention can be used for carrying out at showering chromium-polluted soil
Reason, the showering processing specifically comprise the following steps：
221）It excavates chromium-polluted soil to be repaired and is transported to treatment region；
222）The chromium-polluted soil for being delivered to treatment region is crushed to grain size no more than the chromium-polluted soil within the scope of 30mm
Quality be gross mass 80% or more；
223）Liquid reparation medicament is added to through carrying out repair process in broken chromium-polluted soil；
224）The chromium content in the chromium-polluted soil through the repair process is detected, the repair process is carried out to chromium containing
It measures up to standard.
Wherein, it is described the repair process is carried out it is up to standard to chromium content, can be by through broken chromium-polluted soil
Middle continuation adding liquid repairs medicament or extends the repair process time to carry out.
Further, the thinner the chromium-polluted soil is crushed to the better, is repaiied with liquid to be conducive to chromium-polluted soil
Multiple medicament is sufficiently mixed, and so that liquid is repaired medicament and is preferably played a role.Repairing for chromium-polluted soil of the present invention
Compound method can handle total chrome content as the chromium-polluted soil of 20000mg/kg or so, and the leaching of chromium is dense in repaired soil
Degree well below《Integrated wastewater discharge standard》It is required that repairing effect is good.
The implementation of the present invention, at least has the following effects that：
1, the reparation medicament of the present invention for chromium-polluted soil, composition is simple, and formula is reasonable, can be used for pair
Chromium-polluted soil carries out original position or dystopy immobilization reparation, and can be to the soil, particularly severe of various pollution of chromium degree
Chromium-polluted soil is repaired.
2, the reparation medicament of the present invention for chromium-polluted soil with chromium-polluted soil without being mixed and stirred for
Under the conditions of can efficiently play effect, be therefore particularly suitable for chromium-polluted soil carry out fixation in situ reparation.
3, the reparation medicament of the present invention for chromium-polluted soil can according to the pollution level of soil to be repaired and/
Or soil characteristic is formed to it and content is adjusted, strong applicability, using flexible.
4, the restorative procedure of the present invention for chromium-polluted soil, using above-mentioned reparation medicament to chromium-polluted soil into
Row original position or dystopy immobilization reparation, this method is simple and practicable, of low cost, reparation short to the repair time of chromium-polluted soil
Effect is good.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the attached drawing below in conjunction with the present invention and implementation
Example, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
The every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Embodiment 1
1. preparing liquid repairs medicament
By the sodium disulfide of 50 mass parts, the water of the sodium metasilicate of 30 mass parts, the TMT-15 of 10 mass parts and 10 mass parts
Hydrazine is closed to be mixed and stirred for uniformly, reparation medicament being made；
By the reparation medicament and water according to quality proportioning 12：100 mixing, and stir evenly, liquid is made and repairs medicament.
2. in-situ immobilization is handled
The chromium-polluted soil to be repaired of the present embodiment is located near the chromium salt factory of Jiangxi, uses《Standard of soil environment quality》
（GB15618-1995）Specified in heavy metal detection method measure heavy metal in soil content, testing result show the chromium dirt
Dye total chromium content in soil content is 18245mg/kg.
The technical indicators such as the soil types of the chromium-polluted soil, physicochemical property, penetrating power, level of ground water are analyzed
Afterwards, the amount of chromium-polluted soil to be repaired, and the spacing between the position of reasonable design injection orifice, injection orifice and detection are estimated
Injection orifice and detection well is arranged in the position of well on chromium-polluted soil to be repaired；Aforesaid liquid reparation medicament is passed through into injection
Hole is injected into chromium-polluted soil, so that liquid is repaired medicament fully penetrated to the whole region of chromium-polluted soil and is carried out repair place
Reason, the usage amount that liquid repairs medicament are the 20% of chromium-polluted soil gross mass.
The chemical reaction occurred in repair process includes：
1) reduction reaction of the sodium disulfide to Cr VI in contaminated soil
Cr2O7 2-+3S2-+7H2O=2Cr3++3S+14OH-
2) reduction reaction of the hydrazine hydrate also to Cr VI in contaminated soil
2Cr2O7 2-+3N2H4·H2O+=4Cr3++3N2+14OH-
3) TMT-15 and the chelatropic reaction for reacting the trivalent chromium generated
4) precipitation reaction of trivalent chromium
Cr3++3OH-=Cr(OH)3
After carrying out repair process 3 days to chromium-polluted soil, it is sampled, is used by detecting well《Solid waste leaches
Toxicity leaching method sulfonitric method》（HJ/T299—2007）Specified in leaching mode detection repair after chromium-polluted soil
The content of heavy metal in leachate, the results are shown in Table 1, table 1 the result shows that：After processing 3 days, the pollution of chromium soil of repaired processing
Chromium content in earth is up to standard and is far smaller than《Integrated wastewater discharge standard》It is required that（VI 0.5mg/L of total Cr1.5mg/L, Cr）.
Embodiment 2
Medicament is repaired using the liquid of embodiment 1, showering processing is carried out to the chromium-polluted soil to be repaired of embodiment 1,
Specially：
It excavates chromium-polluted soil to be repaired and is transported to treatment region, chromium-polluted soil is crushed to grain in treatment region
Diameter is 90% or more of gross mass no more than the quality of the chromium-polluted soil within the scope of 30mm；The liquid of embodiment 1 is repaired into medicament
It is added to through carrying out repair process in broken chromium-polluted soil, the usage amount that liquid repairs medicament is chromium-polluted soil gross mass
15%, after carrying out repair process 3 days to chromium-polluted soil, sample detection, the chromium content knot in the chromium-polluted soil after reparation
Fruit is as shown in table 1.
Embodiment 3
By the sodium tetrasulfide of 40 mass parts, the water of the sodium metasilicate of 30 mass parts, the Sodium Dimethyldithiocarbamate of 15 mass parts and 15 mass parts
It closes hydrazine to be mixed and stirred for uniformly, being made after repairing medicament, by the reparation medicament and water according to quality proportioning 20：100 mixing, and
It stirs evenly, liquid is made and repairs medicament.
The chromium-polluted soil to be repaired of the present embodiment is located near the chromium salt factory of Hunan, total chrome content in the chromium-polluted soil
For 12341mg/kg.Repair process, wherein liquid reparation are carried out to the chromium-polluted soil using the in-situ remediation method of embodiment 1
The usage amount of medicament is the 15% of chromium-polluted soil gross mass, after carrying out repair process 3 days to chromium-polluted soil, sample detection,
The results are shown in Table 1 for the chromium content in chromium-polluted soil after reparation.
Embodiment 4
To be repaired chromium of the medicament to embodiment 3 is repaired using the liquid of embodiment 3 using the Ex-situ remediation method of embodiment 2
Contaminated soil carries out showering, and the usage amount that wherein liquid repairs medicament is the 10% of chromium-polluted soil gross mass, to chromium dirt
After contaminating soil progress repair process 3 days, sample detection, the results are shown in Table 1 for the chromium content in chromium-polluted soil after reparation.
Embodiment 5
By the sodium disulfide of 45 mass parts, the TMT- of the sodium metasilicate of 35 mass parts, the TMT-15 of 10 mass parts, 5 mass parts
The hydrazine hydrate of 15 and 5 mass parts is mixed and stirred for uniformly, being made after repairing medicament, by the reparation medicament and water according to quality proportioning
5：100 mixing, and stir evenly, liquid is made and repairs medicament.
The chromium-polluted soil to be repaired of the present embodiment is located near the chromium salt factory of Hebei, total chrome content in the chromium-polluted soil
For 4960mg/kg.Repair process, wherein liquid reparation are carried out to the chromium-polluted soil using the Ex-situ remediation method of embodiment 2
The usage amount of medicament is the 12% of chromium-polluted soil gross mass, after carrying out repair process 3 days to chromium-polluted soil, sample detection,
The results are shown in Table 1 for the chromium content in chromium-polluted soil after reparation.
Embodiment 6
By the trisulfides sodium of 50 mass parts, the sodium pyrosulfite of 10 mass parts, the sodium metasilicate of 25 mass parts, 5 mass parts
TMT-15 and the hydrazine hydrate of 10 mass parts are mixed and stirred for uniformly, being made after repairing medicament, by the reparation medicament and water according to matter
Amount proportioning 5：100 mixing, and stir evenly, liquid is made and repairs medicament.
Repair process is carried out to the chromium-polluted soil of embodiment 5 using the in-situ remediation method of embodiment 1, wherein liquid is repaiied
The usage amount of multiple medicament is the 20% of chromium-polluted soil gross mass, after carrying out repair process 3 days to chromium-polluted soil, sampling inspection
It surveys, the results are shown in Table 1 for the chromium content in chromium-polluted soil after reparation.
Reference examples
The sodium metasilicate of the sodium pyrosulfite of 60 mass parts, the barium chloride of 10 mass parts, 30 mass parts is mixed and stirred for
It is even, it is made after repairing medicament, by the reparation medicament and water according to quality proportioning 12：100 mixing, and stir evenly, liquid is made
Body repairs medicament.
Medicament is repaired respectively to the to be repaired of embodiment 1 using aforesaid liquid using the restorative procedure of embodiment 1 and embodiment 2
Multiple chromium-polluted soil carries out the processing of in situ and showering, respectively as reference examples 1 and reference examples 2, to chromium-polluted soil
After carrying out repair process 3 days, sample detection, the results are shown in Table 1 for the chromium content in chromium-polluted soil after repair process.
After repair process 7 days, the chromium content in the chromium-polluted soil of repaired processing is not still up to standard, continues to add identical
The aforesaid liquid of amount repairs medicament and carries out above-mentioned original position and showering processing, can not still make the chromium-polluted soil of repaired processing
In chromium content it is up to standard.
Chromium content in 1 chromium-polluted soil of table
As seen from the results in Table 1：
Using conventional heavy metal precipitator（Such as barium chloride）It is dirty to chromium with medicament is repaired made of reducing agent and curing agent
The original position of the higher soil of dye degree and showering effect are limited, and the chromium content in soil after reparation is unable to reach《It is dirty
Water comprehensive discharge standard》It is required that；And the present invention is used to have the reparation medicament of specific heavy metal precipitator to various pollution of chromium journeys
The soil of degree carries out repair process, can reach preferable repairing effect, the chromium content after reparation in soil is far smaller than《It is dirty
Water comprehensive discharge standard》It is required that.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of reparation medicament for chromium-polluted soil is grouped as by following group：10~70 mass parts of reducing agent, curing agent 10
1~20 mass parts of~40 mass parts and heavy metal precipitator, wherein the curing agent is sodium metasilicate, the heavy metal precipitator choosing
From one or both of TMT-15 and Sodium Dimethyldithiocarbamate, the reducing agent is selected from sodium polysulfide, hydrazine hydrate, ferrous sulfate, protochloride
It is one or more in iron, sodium hydrogensulfite, sodium pyrosulfite, sodium thiosulfate, sodium sulfite and sodium dithionite.
2. reparation medicament according to claim 1, which is characterized in that the reducing agent includes sodium polysulfide and hydrazine hydrate.
3. reparation medicament according to claim 1, which is characterized in that the reducing agent is sodium polysulfide and hydrazine hydrate, institute
It is sodium metasilicate to state curing agent, and the heavy metal precipitator is TMT-15.
4. reparation medicament according to claim 3, which is characterized in that consisting of：40~60 mass parts of sodium polysulfide, water
Close 5~20 mass parts of hydrazine, 5~15 mass parts of 20~40 mass parts of sodium metasilicate and TMT-15.
5. a kind of restorative procedure for chromium-polluted soil, which is characterized in that include the following steps：
1) by Claims 1 to 4 any the reparation medicament and water according to quality proportioning 2~25：100 stir and evenly mix, and are made
Liquid repairs medicament；
2) medicament is repaired using the liquid and in-situ immobilization processing or showering processing is carried out to chromium-polluted soil to be repaired,
It is up to standard to the chromium content in the chromium-polluted soil, wherein the usage amount that the liquid repairs medicament is that the chromium-polluted soil is total
The 5~20% of quality.
6. restorative procedure according to claim 5, which is characterized in that the in-situ immobilization processing specifically includes following step
Suddenly：
211) injection orifice and detection well are set on chromium-polluted soil to be repaired；
212) liquid reparation medicament is injected by the injection orifice in chromium-polluted soil, the liquid is made to repair medicament
The whole region of fully penetrated to chromium-polluted soil carries out repair process；
213) it is sampled by the detection well, detects the chromium content in the chromium-polluted soil through the repair process, repaiied described
Multiple processing carries out up to standard to chromium content.
7. restorative procedure according to claim 5, which is characterized in that the showering processing specifically includes following step
Suddenly：
221) it excavates chromium-polluted soil to be repaired and is transported to treatment region；
222) chromium-polluted soil for being delivered to treatment region is crushed to matter of the grain size no more than the chromium-polluted soil within the scope of 30mm
Amount is 80% or more of gross mass；
223) liquid reparation medicament is added to through carrying out repair process in broken chromium-polluted soil；
224) chromium content in the chromium-polluted soil through the repair process is detected, the repair process is carried out to chromium content reaching
Mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153420.3A CN105013810B (en) | 2014-04-16 | 2014-04-16 | A kind of reparation medicament and restorative procedure for chromium-polluted soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410153420.3A CN105013810B (en) | 2014-04-16 | 2014-04-16 | A kind of reparation medicament and restorative procedure for chromium-polluted soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105013810A CN105013810A (en) | 2015-11-04 |
| CN105013810B true CN105013810B (en) | 2018-10-30 |
Family
ID=54404313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410153420.3A Active CN105013810B (en) | 2014-04-16 | 2014-04-16 | A kind of reparation medicament and restorative procedure for chromium-polluted soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105013810B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105368455A (en) * | 2015-12-08 | 2016-03-02 | 江苏盖亚环境工程有限公司 | Heavy metal contaminated acidic soil remediation agent, and preparation method and application method thereof |
| CN105598148B (en) * | 2016-02-04 | 2018-09-18 | 青岛果子知识产权运营有限公司 | A kind of method of volatile organic matter and heavy metal chromium combined contamination soil reparation |
| CN105694894A (en) * | 2016-03-18 | 2016-06-22 | 济南大学 | Preparation method and application of hexavalent chromium contaminated soil conditioner |
| CN105598146B (en) * | 2016-03-28 | 2018-05-01 | 四川大学 | Curing agent and restorative procedure for chromium-polluted soil reparation |
| CN105945050A (en) | 2016-05-30 | 2016-09-21 | 青岛理工大学 | Cr (VI) heavy polluted site in-situ detoxification method based on biogas residue |
| CN105880271B (en) * | 2016-07-02 | 2019-04-09 | 江苏省山水生态环境建设工程有限公司 | A kind of restorative procedure of mine chromium heavy-metal contaminated soil |
| CN106581928B (en) * | 2016-11-29 | 2020-03-24 | 四川省银河化学股份有限公司 | Method for amphoteric activation detoxification of chromium residue |
| CN106623402A (en) * | 2016-12-07 | 2017-05-10 | 云南大地绿坤环保科技有限公司 | Method for remedying chromium-polluted soil by inorganic hydrazine |
| CN106957655A (en) * | 2017-03-30 | 2017-07-18 | 北京高能时代环境技术股份有限公司 | Reparation medicament and its preparation and the application of As, Cr contaminated soil are repaired simultaneously |
| CN109201722A (en) * | 2017-07-04 | 2019-01-15 | 江西盖亚环保科技有限公司 | A method of strengthening Pb, As, Cu, Cd, Zn heavy-metal contaminated soil regulation effect |
| CN108641726B (en) * | 2018-04-23 | 2021-03-26 | 永清环保股份有限公司 | Compound reagent for repairing heavy metal contaminated soil and application thereof |
| CN108637003A (en) * | 2018-04-28 | 2018-10-12 | 重庆美天环保工程有限公司 | A kind of regulation method based on 20 meters or less backfill pollutions of chromium |
| CN109365506B (en) * | 2018-08-24 | 2021-07-02 | 湖南永清环保研究院有限责任公司 | Heavy metal passivator suitable for medium-alkaline cadmium contaminated soil and application thereof |
| CN109251110A (en) * | 2018-09-05 | 2019-01-22 | 陈德茂 | A kind of heavy metal-polluted soil captures curing agent and preparation method thereof and application method |
| CN111073651A (en) * | 2018-10-18 | 2020-04-28 | 南京化学工业园环保产业协同创新有限公司 | Soil heavy metal stabilizer and preparation method thereof |
| CN109517598B (en) * | 2018-11-27 | 2021-02-19 | 湖南隆洲驰宇科技有限公司 | Method for producing chromium-curing/stabilizing material, chromium-curing/stabilizing material produced by said method and use |
| CN110343528B (en) * | 2019-07-12 | 2021-03-23 | 河南省明创环境科技有限公司 | Agent for restoring chromium-contaminated soil by using filling principle and method for restoring chromium-contaminated soil by using filling principle |
| CN113416554B (en) * | 2021-06-25 | 2023-09-05 | 湖南瀚洋环保科技有限公司 | Solidifying stabilizer for chromium slag or chromium-polluted soil and use method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5264135A (en) * | 1992-03-19 | 1993-11-23 | Betz Laboratories, Inc. | Method for stabilizing metals in wastewater sludge |
| CN1242719A (en) * | 1995-05-19 | 2000-01-26 | 劳伦斯·克赖斯勒 | Method for recovering and separating metals from waste streams |
| CN101862749A (en) * | 2009-04-14 | 2010-10-20 | 刘杰 | Repairing method of soil polluted by chromium residue |
| CN102228901A (en) * | 2010-06-11 | 2011-11-02 | 中国地质大学（北京） | Treatment method of chromium-polluted soil |
| CN102925161A (en) * | 2012-01-18 | 2013-02-13 | 云南省烟草公司昭通市公司 | Broad spectrum heavy metal activity deactivator preparation method |
| CN103100561A (en) * | 2013-02-06 | 2013-05-15 | 中国科学院武汉岩土力学研究所 | Chromium-contaminated soil remediation method |
| CN103555340A (en) * | 2013-10-29 | 2014-02-05 | 廖清琳 | Novel environment-friendly reagent for reducing leaching concentration of various heavy metals |
-
2014
- 2014-04-16 CN CN201410153420.3A patent/CN105013810B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5264135A (en) * | 1992-03-19 | 1993-11-23 | Betz Laboratories, Inc. | Method for stabilizing metals in wastewater sludge |
| CN1242719A (en) * | 1995-05-19 | 2000-01-26 | 劳伦斯·克赖斯勒 | Method for recovering and separating metals from waste streams |
| CN101862749A (en) * | 2009-04-14 | 2010-10-20 | 刘杰 | Repairing method of soil polluted by chromium residue |
| CN102228901A (en) * | 2010-06-11 | 2011-11-02 | 中国地质大学（北京） | Treatment method of chromium-polluted soil |
| CN102925161A (en) * | 2012-01-18 | 2013-02-13 | 云南省烟草公司昭通市公司 | Broad spectrum heavy metal activity deactivator preparation method |
| CN103100561A (en) * | 2013-02-06 | 2013-05-15 | 中国科学院武汉岩土力学研究所 | Chromium-contaminated soil remediation method |
| CN103555340A (en) * | 2013-10-29 | 2014-02-05 | 廖清琳 | Novel environment-friendly reagent for reducing leaching concentration of various heavy metals |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105013810A (en) | 2015-11-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105013810B (en) | A kind of reparation medicament and restorative procedure for chromium-polluted soil | |
| Zhang et al. | Dredged marine sediments stabilized/solidified with cement and GGBS: Factors affecting mechanical behaviour and leachability | |
| CN104804747B (en) | A kind of calcium base weight metal soil-repairing agent and preparation method | |
| CN104556342B (en) | The reparation medicament of hexavalent chromium polluted soil and underground water and preparation method | |
| Nair et al. | Study of speciation of metals in an industrial sludge and evaluation of metal chelators for their removal | |
| CN109554180A (en) | A kind of heavy-metal contaminated soil renovation agent and restorative procedure | |
| CN104624632B (en) | Remediation method for hexavalent chromium polluted soil and underground water | |
| Polettini et al. | A kinetic study of chelant-assisted remediation of contaminated dredged sediment | |
| Zhang et al. | Influence of redox potential on leaching behavior of a solidified chromium contaminated soil | |
| CN106955888A (en) | The stabilization method of waste residue containing Cr, Cr contaminated soils or its combination | |
| GB2326878A (en) | Reduction of hexavalent chromium using ascorbic acid | |
| CN107384427A (en) | A kind of method for being used for mercury contaminated soil high-efficiency compound stabilizer and mercury contaminated soil reparation | |
| CN109092878A (en) | It is a kind of for handling the stabilization agent and method of heavy-metal composite pollution soil | |
| CN102228901A (en) | Treatment method of chromium-polluted soil | |
| CN104845629A (en) | Leaching agent and leaching method for repairing heavy metal contaminated soil | |
| CN107596613A (en) | A kind of method of heavy metal ion in stabilization, solidification flying ash | |
| CN107398472B (en) | A kind of method that low temperature thermal desorption amalgamation stablizes reparation mercury contaminated soil | |
| Liu et al. | Enhanced immobilization of lead, cadmium, and arsenic in smelter-contaminated soil by sulfidated zero-valent iron | |
| CN108504360A (en) | A kind of pollution of vanadium place soil stabilization renovation agent and its methods for making and using same | |
| CN106957655A (en) | Reparation medicament and its preparation and the application of As, Cr contaminated soil are repaired simultaneously | |
| CN109513737A (en) | A kind of method of cadmium in curing soil | |
| Qiao et al. | Remediation of arsenic contaminated soil by sulfidated zero-valent iron | |
| CN109772873A (en) | The composition and its restorative procedure of a kind of repairing organic polluted soil or underground water | |
| Wang et al. | Remediation of Cr (VI)-contaminated soil by sulfidated zero-valent iron: The effect of citric acid as eluant and modifying agent | |
| CN107262522A (en) | A kind of electrolytic manganese contaminated site soil stabilization repairs medicament and its restorative procedure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |