CN107900094A - A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined - Google Patents
A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined Download PDFInfo
- Publication number
- CN107900094A CN107900094A CN201711135839.6A CN201711135839A CN107900094A CN 107900094 A CN107900094 A CN 107900094A CN 201711135839 A CN201711135839 A CN 201711135839A CN 107900094 A CN107900094 A CN 107900094A
- Authority
- CN
- China
- Prior art keywords
- soil
- heavy
- metal
- heavy metal
- leacheate
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined, comprise the following steps：Heavy-metal contaminated soil is mixed with leacheate, acid adding reduces soil pH, stirring；The heavy-metal contaminated soil obtained after stirring is mixed with passivation renovation agent and carries out Passivation Treatment, completes the reparation to heavy-metal contaminated soil.The method that the present invention is combined using Soil leaching and passivating technique, the content of beary metal in soil can either effectively be reduced, the biological effectiveness that heavy metal and leacheate are remained in soil can be reduced again, so as to effectively control the harm of leacheate and heavy metal in residual soil.The method of the present invention has the advantages that technique is simple, rehabilitation cost is low, practicality is high, repairing effect is good.
Description
Technical field
The invention belongs to remediation of heavy metal-contaminated soil field, is related to one kind chemical leaching and passivating technique joint
The method of restoration of soil polluted by heavy metal.
Background technology
For a long time, since China's Economic Development Mode is extensive, the industrial structure and layout are unreasonable, and industrial and agricultural production flies
Speed development so that farmland soil heavy metals pollution problem becomes increasingly conspicuous.It can be carried out according to Environmental Protection Department with Ministry of Land and Resources
National Soil Pollution Investigation, the situation is tense for China's soil environment situation：The total point position exceeding standard rate of national soil is 16.1%,
Wherein exceeded digit of inorganic pollution accounts for the 82.8% of all super punctuation bits, and inorganic pollution is mainly heavy metal contaminants.
Heavy metal pollution of soil not only breaks up ecological environment, reduces crop yield, has also seriously endangered the health of human body.
Soil leaching refers to by adding leacheate, and the heavy metal in soil is dissolved into leacheate, then discards and contains
There is the leacheate of heavy metal.For high concentration heavy-metal contaminated soil, Soil leaching quickly, can be removed directly in soil
Amount of activated heavy metal, to achieve the purpose that rehabilitating soil.But Soil leaching can not all go the heavy metal in soil
Remove, it will usually there are a large amount of low activity heavy metals and leacheate to residue in soil, and remaining leacheate can strengthen soil
In be not leached the activity of removing heavy metals so that these are not easy the activity for the heavy metal being absorbed and used by plants with the time
Passage gradually enhancing, along with the influence of acid rain, these heavy metals for not being leached removal can be activated slowly, again harm soil
Earth.Moreover, the residual leacheate in soil is larger to the physicochemical property and Influence of Soil Fertility of soil, after being usually expressed as elution
Soil Microorganism quantity reduce and plantation crop yield decline.Existing researcher mostly is often that emphasis passes through
Elution directly removes part heavy metal-polluted soil, but considers elution effect to being influenced caused by soil subsequent treatment,
Such as when selecting the type and concentration of leacheate, substantial amounts of polluter may be reintroduced back to if selection is improper, is easily made
Into secondary pollution, rehabilitation cost is added while increasing follow-up reparation difficulty；If it is improper and for example to elute condition control, may
The physicochemical property and fertility of soil can be changed dramatically in, causes the loss of nutriment in soil, even if carrying out follow-up repair place
Reason also is difficult to reach utilizability level, so that soil loses the value of repairing and reusing.Obviously, Soil leaching effect is ignored
Caused influence, can cause follow-up regulation effect undesirable and increase treatment cost.Soil passivation is typically to add passivator
Add in soil, reduce the biological effectiveness of heavy metal-polluted soil, so as to achieve the purpose that to administer soil.But soil passivation skill
Art can not reduce the content of heavy metal in soil, and when heavy metal in soil content is higher, people would generally increase soil
The amount of application of earth passivator.However, when heavy metal content in soil is excessive, even if largely addition soil passivator, it is also difficult to reach
To the requirement of improvement, while a large amount of of passivator are raised significantly using the cost for also resulting in soil remediation, and soil easily occur
The problems such as hardened, salinization of soil.In addition, the process of processing is being passivated to heavy-metal contaminated soil using high concentration passivator
In, the species, quantity and activity of Soil Microorganism may be influenced, in some instances it may even be possible to can be because soil plate caused by Passivation Treatment
Knot, salinization of soil directly kill most of microorganism in soil, destroy the bioecosystem of soil, and ultimately result in soil mistake
Go use value.As it can be seen that still need to overcome following ask when being used for by Soil leaching and passivation joint and handle heavy-metal contaminated soil
Topic：(1) effective control to Soil leaching effect how is realized；(2) how to realize and the effective of soil after elution is repaired.Realize
Effective control to Soil leaching is the basic of raising Combined Treatment effect.In the premise that realization effectively controls elution effect
Under, effective reparation to soil after elution is to realize the important guarantee that heavy-metal contaminated soil recycles.Therefore, by Soil leaching
It is combined together with passivation, heavy metal in soil content can either effectively be reduced by obtaining one kind, while can reduce soil weight again
The soil remediation method of Bioavailability of Metals is to realizing effective improvement of heavy-metal contaminated soil and recycling with important
Meaning.
The content of the invention
The technical problem to be solved in the present invention is overcoming the deficiencies of the prior art and provide, a kind of technique is simple, rehabilitation cost
It is low, practicality is high, the good method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined of repairing effect.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined, comprises the following steps：
S1, elution：Heavy-metal contaminated soil is mixed with leacheate, acid adding reduces soil pH, stirring；
S2, passivation：By the heavy-metal contaminated soil obtained in step S1 after elution with passivation renovation agent mix progress it is blunt
Change is handled, and completes the reparation to heavy-metal contaminated soil.
It is further improved in above-mentioned method, the mass volume ratio of the heavy-metal contaminated soil and the leacheate
For 1g: 1.5mL~4mL.
Further improved in above-mentioned method, the leacheate is FeCl3Solution；The FeCl3The concentration of solution is
0.06mol/L~0.5mol/L.
It is further improved in above-mentioned method, the FeCl3The concentration of solution is 0.08mol/L~0.3mol/L.
Further improved in above-mentioned method, the passivation renovation agent includes charcoal, lime and organic fertilizer.
It is further improved in above-mentioned method, it is described passivation renovation agent in charcoal, lime, organic fertilizer with it is described
The mass ratio of the heavy-metal contaminated soil obtained in step S1 after elution is 0.5~3: 0.5~3: 0.5~3: 100.
Further improved in above-mentioned method, in step S1, the heavy metal in the heavy-metal contaminated soil includes
One or more in cadmium, lead, copper, zinc.
Further improved in above-mentioned method, in step S1, it is 2~4 to add hydrochloric acid and adjust soil pH.
Further improved in above-mentioned method, in step S1, the time of the stirring is 1h~6h；The stirring
Rotating speed is 180r/min~260r/min.
Further improved in above-mentioned method, in step S2, the time of the Passivation Treatment is 30 days~108 days；Institute
Holding soil moisture content is 30%~75% during stating Passivation Treatment.
Compared with prior art, the advantage of the invention is that：
(1) the present invention provides a kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined,
The method being combined using Soil leaching and passivating technique, can either effectively reduce the content of beary metal in soil, and can drop
The biological effectiveness of heavy metal and leacheate is remained in low soil, so as to effectively control leacheate and a huge sum of money in residual soil
The harm of category.The method of the present invention has the advantages that technique is simple, rehabilitation cost is low, practicality is high, repairing effect is good.
(2) in method of the invention, first by FeCl3Solution (leacheate) is mixed with heavy-metal contaminated soil, and is passed through
Adding HCl reduces soil pH, at low ph conditions, H+It can make a large amount of soil with the heavy metal competition adsorption by soil site in soil
Heavy metal ion is desorbed release in earth, can be in Cl into the heavy metal ion in solution-Ion forms compound, further promotees
Enter into the heavy metal ion in soil in leacheate；Meanwhile Fe3+Can with heavy metal ion competitive Adsorption binding site,
Be conducive to the desorption of heavy metal in soil ion.On this basis, added in heavy-metal contaminated soil of the present invention toward after eluting
Passivation renovation agent is passivated repair process, wherein the addition of passivation renovation agent can improve soil pH, OH-Can be with a huge sum of money
Belong to ions binding, reduce the biological effectiveness that heavy metal and leacheate are remained in soil, further restoration of soil polluted by heavy metal.
In addition, charcoal can reduce nutriment loss, recover edaphon, increase soil quality, while also there is passivation soil
The effect of earth, organic fertilizer are soil fertility and the nutrient that provides microorganism of the supplement because of elution loss, increase soil quality.I.e. with
Charcoal, lime, the passivation renovation agent of organic fertilizer composition can not only reduce available heavy metal content, but also can supplement soil
Earth can also increase the species, quantity and activity of Soil Microorganism, be conducive to further repair because of original fertility of elution loss
Soil after multiple elution, improves the utility value of soil after repairing.
3rd, in the present invention, with FeCl3Solution is leacheate, and the secondary pollution to soil is smaller, and adjusts soil with hydrochloric acid
PH, can preferably promote the heavy metal in soil to dissolve in leacheate.
Embodiment
Below in conjunction with specific preferred embodiment, the invention will be further described, but not thereby limiting the invention
Protection domain.
Material and instrument employed in following embodiments are commercially available.In the embodiment of the present invention, unless otherwise noted,
Following the data obtained is the average value tested above three times.
Embodiment 1
A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined, comprises the following steps：
(1) elute：By the FeCl that concentration is 0.1mol/L3Solution (leacheate) and heavy-metal contaminated soil (heavy metal
The initial properties of contaminated soil, as shown in table 1) mixed according to the ratio that liquid-solid ratio is 2mL: 1g, adjust soil with HCl solution
PH is 2.5, stirs 1h in the case where rotating speed is 200r/min, centrifuges, discard the leacheate of centrifugation gained, the heavy metal after being eluted
Contaminated soil.
(2) heavy-metal contaminated soil after elution in step (1) is air-dried (by air-dry processing be more advantageous to soil with it is blunt
Change renovation agent to be uniformly mixed), (charcoal, lime, organic fertilizer are commercially available, wherein organic fertilizer with charcoal, lime, organic fertilizer
Cross 2mm sieves) mixing, wherein charcoal, lime, the mass ratio of organic fertilizer and the heavy-metal contaminated soil after above-mentioned air-dry are 1: 1:
1: 100, after mixing moisture-retention soil water content for 50% be passivated processing 108 days, complete to heavy-metal contaminated soil
Repair.
Comparative example 1
A kind of method with passivating technique restoration of soil polluted by heavy metal, comprises the following steps：
By heavy-metal contaminated soil (initial properties of the heavy-metal contaminated soil, as shown in table 1) and charcoal, lime,
Organic fertilizer mixes, and wherein the mass ratio of charcoal, lime, organic fertilizer and heavy-metal contaminated soil is 1: 1: 1: 100, is uniformly mixed
Moisture-retention soil water content is passivated processing 108 days for 50% afterwards, completes the reparation to heavy-metal contaminated soil.
To the heavy-metal contaminated soil after being eluted in embodiment 1 and the heavy-metal contaminated soil after Passivation Treatment, comparative example 1
Heavy metal total content, heavy metal bio-available Zn concentration, urease content, invertase in heavy-metal contaminated soil after middle Passivation Treatment
Content, catalase content are detected, and the results are shown in Table 1.
Each performance indicator correction data in the different heavy-metal contaminated soils of table 1
As shown in Table 1, compared to original heavy-metal contaminated soil, cadmium in the heavy-metal contaminated soil after elution, lead, copper,
The total content of zinc have dropped 62.9%, 52.1%, 16.7%, 28.3% respectively, available Cd, lead, copper, zinc content respectively under
Drop 93%, 36%, 20.7%, 41%, urase, invertase, the content of catalase reduce 51.1% respectively,
79.3%th, 78.4%.
As shown in Table 1, compared to the heavy-metal contaminated soil after elution, the weight after eluting and passivating technique joint is repaired
Metallic pollution soil available Cd, lead, copper, the content of zinc have dropped 36.5%, 70.9%, 73.5%, 53.4% respectively, urea
Enzyme, invertase, the content of catalase add 82.6%, 211.1%, 242.9% respectively.
As shown in Table 1, compared to original heavy-metal contaminated soil, available state in the heavy-metal contaminated soil after elution is handled
Cadmium, lead, copper, the content of zinc have dropped 93%, 36%, 20.7%, 41% respectively, urase, invertase, the content of catalase
Reduce 51.1%, 79.3%, 78.4% respectively.Available Cd in heavy-metal contaminated soil after independent Passivation Treatment, lead,
Copper, the content of zinc have dropped 26.2%, 35.3%, 36%, 30.9% respectively, urase, invertase, the content point of catalase
12.8%, 3.2%, 5.8%% is not added.In heavy-metal contaminated soil after eluting and passivating technique joint is repaired effectively
State cadmium, lead, copper, the content of zinc have dropped 95.6%, 81.4%, 79.1%, 72.5% respectively, urase, invertase, hydrogen peroxide
The content of enzyme have dropped 10.6%, 35.1%, 29.3% respectively.
It can be seen from the above that using FeCl3Solution carries out eluting the part heavy metal that can quickly, directly remove in soil,
But the influence of soil acidification and soil quality decline (enzymatic activity considerable decrease) is also brought, and apply soil passivation renovation agent
Heavy metal-polluted soil can be further passivated, reduces Active Heavy Metals concentration in soil, and have certain repair to soil
(soil enzyme activities rising), it is particularly possible to raise soil pH, be in neutrality soil pH.Soil is repaired using elution and passivation joint
Repairing effect acquired by earth is much better than repairing effect during monotechnics.Therefore, present invention chemical leaching and passivating technique
Renovation of heavy metal polluted soil with combined, can not only remove most heavy metal in soil, but also can mitigate residualization after elution
Learn eluent and remain destruction of the heavy metal to soil property, alleviate the influence to soil fertility, while acid can also be reduced
Rain improves the repairing effect to heavy-metal contaminated soil to the activation of residual heavy metal in soil.The method of the present invention has
The advantages that technique is simple, rehabilitation cost is low, practicality is high, repairing effect is good, be one kind can effectively repairing heavy metal pollution soil
The method of earth.
Embodiment 2
A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined, comprises the following steps：
(1) elute：By the FeCl that concentration is 0.08mol/L3Solution (leacheate) and heavy-metal contaminated soil (heavy metal
The initial properties of contaminated soil, as shown in table 1) mixed according to the ratio that liquid-solid ratio is 2mL: 1g, adjust soil with HCl solution
PH is 2, stirs 2h in the case where rotating speed is 180r/min, centrifuges, discards the leacheate of centrifugation gained, heavy metal-polluted after being eluted
Contaminate soil.
(2) heavy-metal contaminated soil after elution in step (1) is air-dried, is mixed with charcoal, lime, organic fertilizer, its
Middle charcoal, lime, the mass ratio of organic fertilizer and the heavy-metal contaminated soil after above-mentioned air-dry are 1: 1: 1: 100, are uniformly mixed
Moisture-retention soil water content is passivated processing 60 days for 60% afterwards, completes the reparation to heavy-metal contaminated soil.
Embodiment 3
A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined, comprises the following steps：
(1) elute：By the FeCl that concentration is 0.2mol/L3Solution (leacheate) and heavy-metal contaminated soil (heavy metal
The initial properties of contaminated soil, as shown in table 1) mixed according to the ratio that liquid-solid ratio is 4mL: 1g, adjust soil with HCl solution
PH is 3, stirs 3h in the case where rotating speed is 220r/min, centrifuges, discards the leacheate of centrifugation gained, heavy metal-polluted after being eluted
Contaminate soil.
(2) heavy-metal contaminated soil after elution in step (1) is air-dried, is mixed with charcoal, lime, organic fertilizer, its
Middle charcoal, lime, the mass ratio of organic fertilizer and the heavy-metal contaminated soil after above-mentioned air-dry are 1: 1: 1: 100, are uniformly mixed
Moisture-retention soil water content is passivated processing 30 days for 50% afterwards, completes the reparation to heavy-metal contaminated soil.
Embodiment 4
A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined, comprises the following steps：
(1) elute：By the FeCl that concentration is 0.3mol/L3Solution (leacheate) and heavy-metal contaminated soil (heavy metal
The initial properties of contaminated soil, as shown in table 1) mixed according to the ratio that liquid-solid ratio is 3mL: 1g, adjust soil with HCl solution
PH is 2, stirs 2h in the case where rotating speed is 260r/min, centrifuges, discards the leacheate of centrifugation gained, heavy metal-polluted after being eluted
Contaminate soil.
(2) heavy-metal contaminated soil after elution in step (1) is air-dried, is mixed with charcoal, lime, organic fertilizer, its
Middle charcoal, lime, the mass ratio of organic fertilizer and the heavy-metal contaminated soil after above-mentioned air-dry are 1: 1: 1: 100, are uniformly mixed
Moisture-retention soil water content is passivated processing 30 days for 50% afterwards, completes the reparation to heavy-metal contaminated soil.
The heavy metal of heavy-metal contaminated soil in embodiment 2-4 after elution and Passivation Treatment joint are repaired always is contained
Amount, heavy metal bio-available Zn concentration, urease content, invertase content, catalase content are detected, and the results are shown in Table 2.
Each performance indicator correction data in heavy-metal contaminated soil of the table 2 after eluting and Passivation Treatment joint is repaired
As shown in Table 2, the method that the present invention uses chemical leaching and passivating technique renovation of heavy metal polluted soil with combined, both
The content of beary metal in soil can be effectively reduced, and the biologically effective that heavy metal and leacheate are remained in soil can be reduced
Property, it is that one kind being capable of effectively remediating heavy metal dirt so as to effectively control the harm of leacheate and heavy metal in residual soil
Contaminate the method for soil.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example.All technical solutions belonged under thinking of the present invention belong to protection scope of the present invention.It is noted that for the art
Those of ordinary skill for, improvements and modifications without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
- A kind of 1. method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined, it is characterised in that including with Lower step：S1, elution：Heavy-metal contaminated soil is mixed with leacheate, acid adding reduces soil pH, stirring；S2, passivation：The heavy-metal contaminated soil obtained in step S1 after elution is mixed with passivation renovation agent and is passivated place Reason, completes the reparation to heavy-metal contaminated soil.
- 2. the according to the method described in claim 1, it is characterized in that, quality of the heavy-metal contaminated soil and the leacheate Volume ratio is 1g: 1.5mL~4mL.
- 3. according to the method described in claim 2, it is characterized in that, the leacheate is FeCl3Solution；The FeCl3Solution Concentration is 0.06mol/L~0.5mol/L.
- 4. the according to the method described in claim 3, it is characterized in that, FeCl3The concentration of solution for 0.08mol/L~ 0.3mol/L。
- 5. method according to any one of claims 1 to 4, it is characterised in that it is described passivation renovation agent include charcoal, Lime and organic fertilizer.
- 6. according to the method described in claim 5, it is characterized in that, the charcoal being passivated in renovation agent, lime, organic fertilizer The mass ratio of heavy-metal contaminated soil with being obtained in the step S1 after elution is 0.5~3: 0.5~3: 0.5~3: 100.
- 7. method according to any one of claims 1 to 4, it is characterised in that in step S1, the heavy metal polluted soil Heavy metal in earth includes the one or more in cadmium, lead, copper, zinc.
- 8. method according to any one of claims 1 to 4, it is characterised in that in step S1, add hydrochloric acid and adjust soil PH is 2~4.
- 9. method according to any one of claims 1 to 4, it is characterised in that in step S1, the time of the stirring is 1h~6h；The rotating speed of the stirring is 180r/min~260r/min.
- 10. method according to any one of claims 1 to 4, it is characterised in that in step S2, the Passivation Treatment Time is 30 days~108 days；It is 30%~75% that soil moisture content is kept during the Passivation Treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711135839.6A CN107900094A (en) | 2017-11-16 | 2017-11-16 | A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711135839.6A CN107900094A (en) | 2017-11-16 | 2017-11-16 | A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107900094A true CN107900094A (en) | 2018-04-13 |
Family
ID=61844328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711135839.6A Pending CN107900094A (en) | 2017-11-16 | 2017-11-16 | A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107900094A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672485A (en) * | 2018-05-14 | 2018-10-19 | 东华大学 | A kind of method of heavy metal and organic pollution in reparation agricultural soil |
| CN108817060A (en) * | 2018-08-03 | 2018-11-16 | 王子豪 | The method of efficient restoration of soil polluted by heavy metal |
| CN110523762A (en) * | 2019-08-20 | 2019-12-03 | 北京上水环境科技发展有限公司 | A kind of administering method of alkaline land soil heavy metal pollution |
| CN110773561A (en) * | 2019-11-25 | 2020-02-11 | 苏州中晟环境修复股份有限公司 | Leaching and curing combined remediation method for soil polluted by circuit board etching solution |
| CN110899317A (en) * | 2019-12-25 | 2020-03-24 | 中国电建集团中南勘测设计研究院有限公司 | Cadmium-polluted farmland soil remediation method based on magnetic biochar |
| CN111282980A (en) * | 2020-02-12 | 2020-06-16 | 中南林业科技大学 | Safe recycling method for heavy metal contaminated soil subjected to chemical leaching remediation |
| CN112280562A (en) * | 2020-09-16 | 2021-01-29 | 辽宁石油化工大学 | Lead-cadmium contaminated soil remediation agent and remediation method thereof |
| CN113976604A (en) * | 2021-10-29 | 2022-01-28 | 江苏和而同环境建设有限公司 | Method for treating acidic heavy metal polluted rice field |
| CN114733892A (en) * | 2022-03-01 | 2022-07-12 | 武汉市秀谷科技有限公司 | Farmland soil copper and nickel pollution treatment method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585045A (en) * | 2009-06-19 | 2009-11-25 | 华南农业大学 | Method for repairing heavy metal pollution soil by using chemical leaching and deep layer fixing combining technology |
| CN104190698A (en) * | 2014-08-21 | 2014-12-10 | 中国科学院南京土壤研究所 | Method for restoring clayed soil of high-load heavy metal polluted site |
| CN104668281A (en) * | 2015-03-17 | 2015-06-03 | 中国科学院南京土壤研究所 | Chemical washing-plant absorbing combined repair method for cadmium heavy pollution acid soil of non-ferrous metal mining area of south China |
| CN105363769A (en) * | 2015-12-17 | 2016-03-02 | 中国有色桂林矿产地质研究院有限公司 | Method for restoring cadmium-contaminated farmland soil |
| CN105772500A (en) * | 2016-05-17 | 2016-07-20 | 四川新隆农业科技有限公司 | Remediation method for soil contaminated by heavy metal |
| CN106190169A (en) * | 2016-09-22 | 2016-12-07 | 北京新源环境有限公司 | A kind of eluent for Compound Heavy Metals soil remediation |
| CN107138511A (en) * | 2017-05-11 | 2017-09-08 | 南京大学 | A kind of method of renovation of heavy metal polluted soil with combined |
| CN107309266A (en) * | 2017-05-22 | 2017-11-03 | 浙江大学 | The eluent and its method of a kind of Compound Heavy Metals serious pollution soil |
-
2017
- 2017-11-16 CN CN201711135839.6A patent/CN107900094A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585045A (en) * | 2009-06-19 | 2009-11-25 | 华南农业大学 | Method for repairing heavy metal pollution soil by using chemical leaching and deep layer fixing combining technology |
| CN104190698A (en) * | 2014-08-21 | 2014-12-10 | 中国科学院南京土壤研究所 | Method for restoring clayed soil of high-load heavy metal polluted site |
| CN104668281A (en) * | 2015-03-17 | 2015-06-03 | 中国科学院南京土壤研究所 | Chemical washing-plant absorbing combined repair method for cadmium heavy pollution acid soil of non-ferrous metal mining area of south China |
| CN105363769A (en) * | 2015-12-17 | 2016-03-02 | 中国有色桂林矿产地质研究院有限公司 | Method for restoring cadmium-contaminated farmland soil |
| CN105772500A (en) * | 2016-05-17 | 2016-07-20 | 四川新隆农业科技有限公司 | Remediation method for soil contaminated by heavy metal |
| CN106190169A (en) * | 2016-09-22 | 2016-12-07 | 北京新源环境有限公司 | A kind of eluent for Compound Heavy Metals soil remediation |
| CN107138511A (en) * | 2017-05-11 | 2017-09-08 | 南京大学 | A kind of method of renovation of heavy metal polluted soil with combined |
| CN107309266A (en) * | 2017-05-22 | 2017-11-03 | 浙江大学 | The eluent and its method of a kind of Compound Heavy Metals serious pollution soil |
Non-Patent Citations (2)
| Title |
|---|
| 九三学社江苏省委员会著: "《科技创新与促进江苏绿色制造发展》", 30 June 2016, 东南大学出版社 * |
| 宋学军编: "《警惕身边的环境危机》", 30 September 2014, 甘肃科学技术出版社 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672485A (en) * | 2018-05-14 | 2018-10-19 | 东华大学 | A kind of method of heavy metal and organic pollution in reparation agricultural soil |
| CN108817060A (en) * | 2018-08-03 | 2018-11-16 | 王子豪 | The method of efficient restoration of soil polluted by heavy metal |
| CN110523762A (en) * | 2019-08-20 | 2019-12-03 | 北京上水环境科技发展有限公司 | A kind of administering method of alkaline land soil heavy metal pollution |
| CN110773561A (en) * | 2019-11-25 | 2020-02-11 | 苏州中晟环境修复股份有限公司 | Leaching and curing combined remediation method for soil polluted by circuit board etching solution |
| CN110899317A (en) * | 2019-12-25 | 2020-03-24 | 中国电建集团中南勘测设计研究院有限公司 | Cadmium-polluted farmland soil remediation method based on magnetic biochar |
| CN111282980A (en) * | 2020-02-12 | 2020-06-16 | 中南林业科技大学 | Safe recycling method for heavy metal contaminated soil subjected to chemical leaching remediation |
| CN111282980B (en) * | 2020-02-12 | 2021-09-14 | 中南林业科技大学 | Method for safely recycling heavy metal contaminated soil subjected to chemical leaching remediation |
| CN112280562A (en) * | 2020-09-16 | 2021-01-29 | 辽宁石油化工大学 | Lead-cadmium contaminated soil remediation agent and remediation method thereof |
| CN112280562B (en) * | 2020-09-16 | 2022-05-10 | 辽宁石油化工大学 | Lead-cadmium contaminated soil remediation agent and remediation method thereof |
| CN113976604A (en) * | 2021-10-29 | 2022-01-28 | 江苏和而同环境建设有限公司 | Method for treating acidic heavy metal polluted rice field |
| CN114733892A (en) * | 2022-03-01 | 2022-07-12 | 武汉市秀谷科技有限公司 | Farmland soil copper and nickel pollution treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107900094A (en) | A kind of method with chemical leaching and passivating technique renovation of heavy metal polluted soil with combined | |
| Tang et al. | Review of remediation practices regarding cadmium-enriched farmland soil with particular reference to China | |
| CN106216379B (en) | Comprehensive leaching remediation method and system for heavy metal contaminated soil | |
| CN105170620B (en) | A kind of method of magnetic active carbon collaboration activator restoration of soil polluted by heavy metal | |
| CN104650921B (en) | It is a kind of to reduce Cadmium in Soil, the renovation agent of lead bio-available Zn concentration and its application method and application | |
| CN104893732B (en) | soil repairing agent and preparation method and use method thereof | |
| CN109078972B (en) | Heavy metal contaminated soil remediation material and application method thereof | |
| CN105013812B (en) | A kind of quick technology for repairing heavy metals in farmland pollution | |
| CN107457253A (en) | A kind of method of medicament and reparation As polluted soil for As polluted soil reparation | |
| CN108213069A (en) | Acid heavy metal contaminated soil remediation method | |
| CN111205877B (en) | Composite repairing agent for treating farmland cadmium-polluted soil and repairing method | |
| CN108753309A (en) | Efficiently remove the soil in-situ repair composite material of removing heavy metals | |
| CN108856282B (en) | Composite remediation method for heavy metal contaminated farmland soil | |
| CN106424115A (en) | In-situ passivation remediation method for cadmium polluted rice soil | |
| CN109370596A (en) | A kind of in-situ passivation the reparation medicament, preparation method and application of cadmium arsenic combined pollution agricultural land soil | |
| CN105363769A (en) | Method for restoring cadmium-contaminated farmland soil | |
| CN102941225A (en) | Chemistry-microorganism combination restoration method of polycyclic aromatic hydrocarbons and heavy metal composite contaminated site soil | |
| CN104479684A (en) | Curing agent and method for heavy metal in polluted soil | |
| CN107244999A (en) | It is a kind of to remove microbial bacterial agent of removing heavy metals and its preparation method and application | |
| CN110982536A (en) | Heavy metal polluted farmland soil remediation agent, preparation method and remediation method thereof | |
| CN106825026A (en) | A kind of method that modified biomass charcoal and its resistance control heavy metal are accumulated in vegetables body | |
| CN107365227A (en) | Heavy-metal contaminated soil compost modifying agent and its modification method | |
| CN113546952A (en) | Magnetic biochar soil remediation agent for soil heavy metal pollution and preparation method and application thereof | |
| CN110125161A (en) | A kind of heavy metal soil-repairing agent and method cooperateing with compost based on magnesia-montmorillonite composite material | |
| CN109807169A (en) | A kind of restorative procedure of heavy-metal contaminated soil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180413 |