CN112742858A - Method for repairing soil polluted by heavy metal cadmium - Google Patents
Method for repairing soil polluted by heavy metal cadmium Download PDFInfo
- Publication number
- CN112742858A CN112742858A CN202011500432.0A CN202011500432A CN112742858A CN 112742858 A CN112742858 A CN 112742858A CN 202011500432 A CN202011500432 A CN 202011500432A CN 112742858 A CN112742858 A CN 112742858A
- Authority
- CN
- China
- Prior art keywords
- soil
- remediation
- cadmium
- plants
- heavy metal
- 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
- 239000002689 soil Substances 0.000 title claims abstract description 131
- 229910052793 cadmium Inorganic materials 0.000 title claims abstract description 61
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005067 remediation Methods 0.000 claims abstract description 52
- 241001465754 Metazoa Species 0.000 claims abstract description 29
- 230000000813 microbial effect Effects 0.000 claims abstract description 24
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 22
- 230000006872 improvement Effects 0.000 claims abstract description 8
- 241000196324 Embryophyta Species 0.000 claims description 77
- 241001233061 earthworms Species 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 13
- 241000219198 Brassica Species 0.000 claims description 12
- 235000011331 Brassica Nutrition 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 12
- 241000894006 Bacteria Species 0.000 claims description 8
- 241000233866 Fungi Species 0.000 claims description 8
- 230000003042 antagnostic effect Effects 0.000 claims description 8
- 230000015556 catabolic process Effects 0.000 claims description 8
- 238000006731 degradation reaction Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 8
- 231100000331 toxic Toxicity 0.000 claims description 6
- 230000002588 toxic effect Effects 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000007613 environmental effect Effects 0.000 claims description 5
- 244000178993 Brassica juncea Species 0.000 claims description 4
- 235000014698 Brassica juncea var multisecta Nutrition 0.000 claims description 4
- 241001226392 Brassica rapa subsp. dichotoma Species 0.000 claims description 4
- 235000005039 Brassica rapa var. dichotoma Nutrition 0.000 claims description 4
- 241000219193 Brassicaceae Species 0.000 claims description 4
- 241000195649 Chlorella <Chlorellales> Species 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 241000195493 Cryptophyta Species 0.000 claims description 4
- 241000228143 Penicillium Species 0.000 claims description 4
- 241000209504 Poaceae Species 0.000 claims description 4
- 241000589516 Pseudomonas Species 0.000 claims description 4
- 241000700159 Rattus Species 0.000 claims description 4
- 241000235527 Rhizopus Species 0.000 claims description 4
- 239000004113 Sepiolite Substances 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 241000223259 Trichoderma Species 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 4
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 239000002734 clay mineral Substances 0.000 claims description 4
- 239000002361 compost Substances 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 4
- 239000003344 environmental pollutant Substances 0.000 claims description 4
- 239000003337 fertilizer Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000003415 peat Substances 0.000 claims description 4
- 231100000719 pollutant Toxicity 0.000 claims description 4
- 230000001737 promoting effect Effects 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- 239000013049 sediment Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 229910052624 sepiolite Inorganic materials 0.000 claims description 4
- 235000019355 sepiolite Nutrition 0.000 claims description 4
- 239000010802 sludge Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 4
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 4
- 229960001763 zinc sulfate Drugs 0.000 claims description 4
- 241000588923 Citrobacter Species 0.000 claims description 3
- 241000195474 Sargassum Species 0.000 claims description 3
- 240000008345 Thalassia hemprichii Species 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 4
- 241000544014 Thalassia Species 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- 206010020772 Hypertension Diseases 0.000 description 1
- 206010067125 Liver injury Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 206010037423 Pulmonary oedema Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000234 hepatic damage Toxicity 0.000 description 1
- 230000008818 liver damage Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 208000005333 pulmonary edema Diseases 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 230000008085 renal dysfunction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mycology (AREA)
- Health & Medical Sciences (AREA)
- Botany (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of soil remediation, in particular to a method for remediating heavy metal cadmium polluted soil, which comprises the following steps: s1, ploughing and improving the soil by applying the improving agent; s2, repairing the soil by planting plants in the improved soil; s3, performing animal soil remediation on the soil after the plant improvement; and S4, performing microbial remediation on the soil improved by the animals. The method has the characteristics of economy, convenience and no change of the inherent physicochemical property of soil through animal remediation and microbial remediation modes, the environment polluted by cadmium is remediated by plants, the cost is low, the comprehensive ecological benefit is good, the method is particularly suitable for large-area popularization, and the efficient, stable and green remediation of the cadmium-polluted soil is thoroughly realized by matching the conditioner with animal remediation, microbial remediation and plant remediation, so that the method is the main direction of research.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to a method for remediating heavy metal cadmium polluted soil.
Background
Cadmium is one of heavy metal elements with the strongest toxicity in the environment, is positioned in the second subgroup of the periodic table of elements, has the characteristics of strong biological mobility and easy absorption and accumulation by plants, can generate toxic action on animals, plants and human bodies, and even can cause diseases such as osteodynia, hypertension, renal dysfunction, liver damage, pulmonary edema and the like in serious cases; according to statistics, agricultural products and animals with cadmium content exceeding the standard produced in China every year cause accumulated toxic products of 146 ten thousand concave, the farmland area polluted by cadmium is over 28 ten thousand hm2, the agricultural products with cadmium exceeding the standard produced in China every year reach 150 ten thousand state, about 10% of common rice sold in the market in China has cadmium exceeding the standard, and great hidden danger is caused to environmental economy and human health.
The existing chemical remediation only changes the form of cadmium in soil, does not really remove cadmium pollution, has the possibility of reactivation damage, and is not a permanent remediation measure; therefore, a method for repairing soil polluted by heavy metal cadmium.
Disclosure of Invention
The invention aims to provide a method for repairing soil polluted by heavy metal cadmium, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for repairing soil polluted by heavy metal cadmium comprises the following steps:
s1, ploughing and improving the soil by applying the improving agent;
s2, repairing the soil by planting plants in the improved soil;
s3, performing animal soil remediation on the soil after the plant improvement;
and S4, performing microbial remediation on the soil improved by the animals.
Preferably, the S1 is used for improving the soil by applying the improving agent, and the plowing depth is 10-15 cm.
Preferably, the S1 is used for improving the soil by applying the conditioner: chemical modifying agents are added into the polluted soil , heavy metals are subjected to fixed conversion, dissolution extraction and extraction separation, so that the content of the heavy metals in the polluted soil is reduced, the environmental conditions of the soil are changed, and the active cadmium and the stable cadmium in the soil can be mutually converted, wherein the modifying agents are alkaline modifying agents (lime, calcium magnesium phosphate fertilizer and the like), clay minerals (zeolite, sepiolite and the like), antagonistic substances (zinc sulfate, rare earth lanthanum and the like) and organic matters (peat, organic compost and the like) cadmium pollution remediation chemical materials.
Preferably, the S2 repairs the soil by planting plants in the improved soil: the method is characterized in that toxic and harmful pollutants in soil, sediment, sludge or ground surface and underground water are absorbed, decomposed, transformed or fixed by plants, and the method comprises plant extraction, plant volatilization, plant degradation, plant root filtration and rhizosphere microbial degradation, wherein cruciferae is more, and is mainly concentrated in Brassica, Brassica and Thalassia, and the hyperaccumulator plants with good cadmium polluted soil repairing effect comprise more than 10 families of plants including Brassica and Gramineae; some ornamental plants, farmland weeds and woody plants are also cadmium-contaminated soil remediation super-accumulative plants.
Preferably, the S3 is used for animal remediation of soil after plant improvement: some lower animals such as earthworms and rats in the soil can absorb heavy metals in the soil, so that the content of the heavy metals in the soil is reduced to a certain extent; the earthworms are inoculated in the heavy metal contaminated soil to find that the earthworms have stronger enrichment capacity on cadmium, and the enrichment amount is gradually increased along with the prolonging of the culture time of the earthworms.
Preferably, the S4 is used for microbial remediation of soil improved by animals: the remediation of the polluted soil is realized mainly by changing the activity of heavy metal ions in the soil, adsorbing and enriching heavy metals by microbial cells and promoting the absorption of heavy metals by hyper-enriched plants; the antagonistic bacterium WS34 can greatly improve the cadmium and lead enriching capability of Indian mustard and rape, and the AM fungus can increase the cadmium tolerance of plants and promote heavy metals such as cadmium to be transferred from the underground part to the overground part of the plants; the microbes for cadmium contaminated soil remediation encompass bacteria (Citrobacter, Pseudomonas, etc.), fungi (Rhizopus, Penicillium, Trichoderma, etc.), and certain small algae (Chlorella, Sargassum, etc.).
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the method has the characteristics of economy, convenience and no change of the inherent physicochemical property of soil through animal restoration and microbial restoration, the environment polluted by cadmium is restored by using plants, the cost is low, the comprehensive ecological benefit is good, the method is particularly suitable for large-area popularization, and the efficient, stable and green restoration of the cadmium polluted soil is thoroughly realized by matching the modifying agent with animal restoration, microbial restoration and plant restoration.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
The invention provides a technical scheme that:
a method for repairing soil polluted by heavy metal cadmium comprises the following steps:
s1, ploughing and improving the soil by applying the improving agent;
s2, repairing the soil by planting plants in the improved soil;
s3, performing animal soil remediation on the soil after the plant improvement;
and S4, performing microbial remediation on the soil improved by the animals.
And S1, the soil is ploughed and improved by applying the conditioner, and the ploughing depth is 10-15 cm.
The S1 ploughing and improving the soil by applying the improving agent: chemical modifying agents are added into the polluted soil , heavy metals are subjected to fixed conversion, dissolution extraction and extraction separation, so that the content of the heavy metals in the polluted soil is reduced, the environmental conditions of the soil are changed, and the active cadmium and the stable cadmium in the soil can be mutually converted, wherein the modifying agents are alkaline modifying agents (lime, calcium magnesium phosphate fertilizer and the like), clay minerals (zeolite, sepiolite and the like), antagonistic substances (zinc sulfate, rare earth lanthanum and the like) and organic matters (peat, organic compost and the like) cadmium pollution remediation chemical materials.
And S2, repairing the soil by planting plants in the improved soil: the method is characterized in that toxic and harmful pollutants in soil, sediment, sludge or ground surface and underground water are absorbed, decomposed, transformed or fixed by plants, and the method comprises plant extraction, plant volatilization, plant degradation, plant root filtration and rhizosphere microbial degradation, wherein cruciferae is more, and is mainly concentrated in Brassica, Brassica and Thalassia, and the hyperaccumulator plants with good cadmium polluted soil repairing effect comprise more than 10 families of plants including Brassica and Gramineae; some ornamental plants, farmland weeds and woody plants are also cadmium-contaminated soil remediation super-accumulative plants.
And S3, performing animal remediation on the soil after the plant improvement: some lower animals such as earthworms and rats in the soil can absorb heavy metals in the soil, so that the content of the heavy metals in the soil is reduced to a certain extent; the earthworms are inoculated in the heavy metal contaminated soil to find that the earthworms have stronger enrichment capacity on cadmium, and the enrichment amount is gradually increased along with the prolonging of the culture time of the earthworms.
And S4, carrying out microbial remediation on the soil improved by the animals: the remediation of the polluted soil is realized mainly by changing the activity of heavy metal ions in the soil, adsorbing and enriching heavy metals by microbial cells and promoting the absorption of heavy metals by hyper-enriched plants; the antagonistic bacterium WS34 can greatly improve the cadmium and lead enriching capability of Indian mustard and rape, and the AM fungus can increase the cadmium tolerance of plants and promote heavy metals such as cadmium to be transferred from the underground part to the overground part of the plants; the microbes for cadmium contaminated soil remediation encompass bacteria (Citrobacter, Pseudomonas, etc.), fungi (Rhizopus, Penicillium, Trichoderma, etc.), and certain small algae (Chlorella, Sargassum, etc.).
The method has the characteristics of economy, convenience and no change of the inherent physicochemical property of soil through animal remediation and microbial remediation modes, the environment polluted by cadmium is remediated by plants, the cost is low, the comprehensive ecological benefit is good, the method is particularly suitable for large-area popularization, and the efficient, stable and green remediation of the cadmium-polluted soil is thoroughly realized by matching the conditioner with animal remediation, microbial remediation and plant remediation, so that the method is the main direction of research.
Example (b): the soil is ploughed and improved by applying the modifying agent, and the ploughing depth is 10-15 cm; and (3) ploughing and improving the soil by applying the conditioner: chemical modifying agents are put into the polluted soil , heavy metals are subjected to fixed conversion, dissolution extraction and extraction separation, so that the content of the heavy metals in the polluted soil is reduced, the environmental conditions of the soil are changed, and the active cadmium and the stable cadmium in the soil can be mutually converted, wherein the modifying agents are alkaline modifying agents (lime, calcium magnesium phosphate fertilizer and the like), clay minerals (zeolite, sepiolite and the like), antagonistic substances (zinc sulfate, rare earth lanthanum and the like) and organic matters (peat, organic compost and the like) cadmium pollution remediation chemical materials; and (3) repairing the soil by planting plants in the improved soil: the method is characterized in that toxic and harmful pollutants in soil, sediment, sludge or ground surface and underground water are absorbed, decomposed, transformed or fixed by plants, and the method comprises plant extraction, plant volatilization, plant degradation, plant root filtration and rhizosphere microbial degradation, wherein cruciferae is more, and is mainly concentrated in Brassica, Brassica and Thalassia, and the hyperaccumulator plants with good cadmium polluted soil repairing effect comprise more than 10 families of plants including Brassica and Gramineae; some ornamental plants, farmland weeds and woody plants are also cadmium-contaminated soil remediation hyperaccumulator plants; carrying out animal remediation on the soil after plant improvement: some lower animals such as earthworms and rats in the soil can absorb heavy metals in the soil, so that the content of the heavy metals in the soil is reduced to a certain extent; the earthworms are inoculated in the heavy metal contaminated soil to find that the earthworms have stronger enrichment capacity on cadmium, and the enrichment amount is gradually increased along with the prolonging of the culture time of the earthworms; carrying out microbial remediation on the soil improved by the animals: the remediation of the polluted soil is realized mainly by changing the activity of heavy metal ions in the soil, adsorbing and enriching heavy metals by microbial cells and promoting the absorption of heavy metals by hyper-enriched plants; the antagonistic bacterium WS34 can greatly improve the cadmium and lead enriching capability of Indian mustard and rape, and the AM fungus can increase the cadmium tolerance of plants and promote heavy metals such as cadmium to be transferred from the underground part to the overground part of the plants; the microbes for repairing the cadmium-polluted soil cover bacteria (such as bacillus citrate and pseudomonas), fungi (such as rhizopus, penicillium and trichoderma) and certain small algae (such as chlorella and gulfweed), the animal repairing and microbial repairing modes have the characteristics of economy, convenience and no change of the inherent physicochemical properties of the soil, the environment polluted by cadmium is repaired by plants, the cost is low, the comprehensive ecological benefits are good, the application is particularly suitable for large-area popularization, and the improvement agent is matched with the animal repairing, microbial repairing and plant repairing, so that the high efficiency, stability and greenness of the cadmium-polluted soil repairing are thoroughly realized, and the main direction of research is provided.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A method for repairing soil polluted by heavy metal cadmium is characterized by comprising the following steps:
s1, ploughing and improving the soil by applying the improving agent;
s2, repairing the soil by planting plants in the improved soil;
s3, performing animal soil remediation on the soil after the plant improvement;
and S4, performing microbial remediation on the soil improved by the animals.
2. The method for remediating the soil contaminated by heavy metal cadmium as claimed in claim 1, wherein S1 is used for improving the soil by applying an improver, and the plowing depth is 10-15 cm.
3. The method for soil remediation of heavy metal cadmium pollution as recited in claim 1, wherein said S1 is used for improving the soil by applying an improving agent: chemical modifying agents are added into the polluted soil , heavy metals are subjected to fixed conversion, dissolution extraction and extraction separation, so that the content of the heavy metals in the polluted soil is reduced, the environmental conditions of the soil are changed, and the active cadmium and the stable cadmium in the soil can be mutually converted, wherein the modifying agents are alkaline modifying agents (lime, calcium magnesium phosphate fertilizer and the like), clay minerals (zeolite, sepiolite and the like), antagonistic substances (zinc sulfate, rare earth lanthanum and the like) and organic matters (peat, organic compost and the like) cadmium pollution remediation chemical materials.
4. The method for soil remediation of heavy metal cadmium pollution as recited in claim 1, wherein said S2 is applied to the improved soil for plant cultivation, and the soil remediation is performed: the method is characterized in that toxic and harmful pollutants in soil, sediment, sludge or ground surface and underground water are absorbed, decomposed, transformed or fixed by plants, and the method comprises plant extraction, plant volatilization, plant degradation, plant root filtration and rhizosphere microbial degradation, wherein cruciferae is more, and is mainly concentrated in Brassica, Brassica and Thalassia, and the hyperaccumulator plants with good cadmium polluted soil repairing effect comprise more than 10 families of plants including Brassica and Gramineae; some ornamental plants, farmland weeds and woody plants are also cadmium-contaminated soil remediation super-accumulative plants.
5. The method for soil remediation of heavy metal cadmium contaminated soil as recited in claim 1, wherein said S3 is performed on the plant-improved soil by animal remediation of the soil: some lower animals such as earthworms and rats in the soil can absorb heavy metals in the soil, so that the content of the heavy metals in the soil is reduced to a certain extent; the earthworms are inoculated in the heavy metal contaminated soil to find that the earthworms have stronger enrichment capacity on cadmium, and the enrichment amount is gradually increased along with the prolonging of the culture time of the earthworms.
6. The method for soil remediation of heavy metal cadmium pollution as recited in claim 1, wherein said S4 is used for microbial remediation of animal-modified soil: the remediation of the polluted soil is realized mainly by changing the activity of heavy metal ions in the soil, adsorbing and enriching heavy metals by microbial cells and promoting the absorption of heavy metals by hyper-enriched plants; the antagonistic bacterium WS34 can greatly improve the cadmium and lead enriching capability of Indian mustard and rape, and the AM fungus can increase the cadmium tolerance of plants and promote heavy metals such as cadmium to be transferred from the underground part to the overground part of the plants; the microbes for cadmium contaminated soil remediation encompass bacteria (Citrobacter, Pseudomonas, etc.), fungi (Rhizopus, Penicillium, Trichoderma, etc.), and certain small algae (Chlorella, Sargassum, etc.).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011500432.0A CN112742858A (en) | 2020-12-17 | 2020-12-17 | Method for repairing soil polluted by heavy metal cadmium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011500432.0A CN112742858A (en) | 2020-12-17 | 2020-12-17 | Method for repairing soil polluted by heavy metal cadmium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112742858A true CN112742858A (en) | 2021-05-04 |
Family
ID=75648524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011500432.0A Pending CN112742858A (en) | 2020-12-17 | 2020-12-17 | Method for repairing soil polluted by heavy metal cadmium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112742858A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114015599A (en) * | 2021-11-08 | 2022-02-08 | 广东省科学院动物研究所 | Lead-resistant bacterium and application thereof |
| CN115228918A (en) * | 2022-07-29 | 2022-10-25 | 中冶集团武汉勘察研究院有限公司 | Soil extractant and method for repairing heavy metal contaminated soil by using same |
| CN115532809A (en) * | 2022-09-27 | 2022-12-30 | 西南科技大学 | Process for treating heavy metal pollution of soil |
-
2020
- 2020-12-17 CN CN202011500432.0A patent/CN112742858A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114015599A (en) * | 2021-11-08 | 2022-02-08 | 广东省科学院动物研究所 | Lead-resistant bacterium and application thereof |
| CN114015599B (en) * | 2021-11-08 | 2022-08-19 | 广东省科学院动物研究所 | Lead-resistant bacterium and application thereof |
| CN115228918A (en) * | 2022-07-29 | 2022-10-25 | 中冶集团武汉勘察研究院有限公司 | Soil extractant and method for repairing heavy metal contaminated soil by using same |
| CN115532809A (en) * | 2022-09-27 | 2022-12-30 | 西南科技大学 | Process for treating heavy metal pollution of soil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112742858A (en) | Method for repairing soil polluted by heavy metal cadmium | |
| CN103495602B (en) | Method for restoring hexavalent chromium-polluted soil by utilizing microbial fermentation | |
| CN109181704B (en) | Soil heavy metal and organic pollution remediation agent and preparation and application methods thereof | |
| CN101805617B (en) | Soil heavy metal passivant for facilities vegetable field and preparation method thereof | |
| CN102807872B (en) | Biochar mixing type protected horticultural vegetable field soil heavy metal passivant and preparation method thereof | |
| Dimitriou et al. | Willows for energy and phytoremediation in Sweden | |
| CN101708936B (en) | Method for treating sludge with heavy metals exceeding standard | |
| CN106147775B (en) | A kind of fixed renovation agent of biochemistry combined soil heavy metal pollution and application | |
| Liu et al. | Enhanced phytoextraction of heavy metals from contaminated soil by plant co-cropping associated with PGPR | |
| CN108130087A (en) | A kind of soil conditioner and application process for repairing cadmium-arsenic combined pollution | |
| CN109351769A (en) | Heavy-metal contaminated soil humic acid green in-situ solidifies renovation technique | |
| CN105478460A (en) | Bioremediation method of oil-contaminated soil | |
| CN103480644A (en) | Plant-microorganism combined method for enhanced repairing of petroleum-contaminated spetroleum | |
| CN104226679B (en) | A kind of method using antimicrobial plant combine d bioremediation manufactured coal gas plant contaminated soil | |
| CN1693236A (en) | Process for water body repairing by microorganism film biologic chinampa for large type water body pollution treatment | |
| CN106995704A (en) | A kind of renovation agent, its preparation method and the method with its restoration of soil polluted by heavy metal | |
| CN107099298A (en) | A kind of energy converted in-situ administers the application process of the microbial bacterial agent in cadmium pollution arable land | |
| CN111570501A (en) | Remediation method for improving remediation effect of heavy metal contaminated soil | |
| CN107020295B (en) | Cadmium-polluted farmland in-situ rapid restoration method based on microbial transformation | |
| CN110814005A (en) | Method for restoring soil polluted by heavy metal cadmium in northern farmland | |
| CN112090943A (en) | Multi-type land soil ecological restoration system and working method thereof | |
| CN113020249A (en) | Method for repairing soil arsenic pollution in arid region by using SAP (super absorbent polymer) reinforced manganese oxidizing bacteria | |
| CN112620343A (en) | Ecological remediation heavy metal contaminated soil treatment method | |
| CN106834184A (en) | A kind of composite flora and its application in Cr (VI) contaminated soil remediation | |
| CN109607988A (en) | A kind of ecology pit black and odorous water processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210504 |