CN110184069A - The method for repairing the agricultural land soil by heavy metal pollution - Google Patents
The method for repairing the agricultural land soil by heavy metal pollution Download PDFInfo
- Publication number
- CN110184069A CN110184069A CN201810153985.XA CN201810153985A CN110184069A CN 110184069 A CN110184069 A CN 110184069A CN 201810153985 A CN201810153985 A CN 201810153985A CN 110184069 A CN110184069 A CN 110184069A
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- dithiocar
- bamate
- polymer
- water
- 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.)
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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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/14—Soil-conditioning materials or soil-stabilising materials containing organic compounds only
- C09K17/18—Prepolymers; Macromolecular compounds
- C09K17/20—Vinyl polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2101/00—Agricultural use
Abstract
The present invention relates to the methods for repairing the agricultural land soil by heavy metal pollution, keep heavy metal stable and is fixed on the method for agricultural land soil, the described method comprises the following steps: Xiang Suoshu soil adds the dithiocar-bamate of at least one water-soluble polymeric, the dithiocar-bamate of the water-soluble polymeric, which has, is included in 2000 and 200, the molecular weight Mw between 000g/mol.
Description
It is used to repair the farmland soil polluted by toxic heavy metal ion the present invention relates to dithiocar-bamate polymer
The application of earth.
It is well-known with chelating agent such as EDTA (ethylenediamine tetra-acetic acid) chelated metal ions, and is repaired using EDTA
Multiple agricultural land soil is just being applied in practice.However, resulting chelating conjugate is water-soluble and their molecular weight very little, because
This crops still is able to absorb by their root film.In addition, the ginseng dosage of EDTA is usually high.
Inorganic chemical such as calcium oxide is the another kind of chemicals currently used for repairing the agricultural land soil by heavy metal pollution.
But the problem of using this product, has very much, and such as: height addition dosage, agricultural land soil will become alkali over time
Property, and the variation that can enable soil property is used for a long time.
Therefore we need to be effectively treated improvement and the ameliorative way of contaminated agricultural land soil, to be used further to agriculture
Field tillage objective.
Present invention aims to including the water-soluble effective of aminodithioformic acid root functional group on chain
Polymeric chelant, therefore heavy metal ion such as cadmium and the chelating of this polymer chemical products will quickly and readily, and institute
The chelating conjugate obtained becomes insoluble in and can be precipitated out.It incites somebody to action not water-soluble conjugate stabilization and is fixed on soil texture
In, and due to its water-insoluble and its macromolecule, crops will not pass through root film and absorb it.Moreover, resulting not water
Solubleness complex is fixed in the soil, will be also not easy to take away by rainwater or by irrigation water, and be caused underground water pollution.
Present invention aims to the method that the agricultural land soil of heavy metal pollution is stable and fixed, the method includes with
Lower step: at least one water-soluble dithiocar-bamate polymer, the water solubility dithiocarbamates are added to the soil
It includes molecular weight (Mw) between 2000 and 200,000g/mol that formates polymer, which has,.Understand, it is of the present invention
Dithiocar-bamate polymer and soil heavy metal contaminants chelate.Advantageously, the heavy metal formed in the soil
The dithiocar-bamate complex compound of polymerization is water-insoluble, and is fixed in pedostratigraphy.
Agricultural land soil can be by one or more heavy metal pollutions.Particularly, heavy metal include Pb, Hg, Cu, Cd, Ag,
Ni, Co, Ga and Cr etc..Heavy metal is usually the form of heavy metal ion in agricultural land soil.
The molecular weight (Mw) of water-soluble dithiocar-bamate polymer preferably is contained in 4,000 and 150,000g/
Between mol, even more preferably between 10,000 and 100,000g/mol.Weight average molecular weight passes through high-pressure liquid chromatography
(HPLC) it measures.
Water-soluble dithiocar-bamate polymer is preferably polyethyleneimine dithiocar-bamate.
Implement according to the method for the present invention preferably by two kinds of water-soluble dithiocar-bamate polymer, a kind of tool
There is the molecular weight (Mw) being included between 2,000 and 50,000g/mol, another kind, which has, is included in 70,000 and 200,000g/
Molecular weight (Mw) between mol.
Effectively, this polymer and heavy metal ion chelating chemical reaction be will not reverse back and not biodegradable
, and be fixed in pedostratigraphy.As long as therefore agricultural land soil is no longer polluted by external source again, there is no need to carry out into one
The processing of step.
In a preferred embodiment, this method is unnecessary goes the two thio of separating beavy metal and polymerization from soil
The step of conjugate formed between carbaminate.Advantageously, which is that the insoluble form of water is stayed in the soil.Due to
Its binding molecule amount is very big, it is fixed in agricultural land soil, so will not walk downwards along soil and water, underground water is therefore
It is not contaminated.
The ginseng agent dosage that adds of water-soluble dithiocar-bamate polymer is preferably added to agricultural land soil, is weight in soil
At least 1.5 times of metal concentration, more preferably at least 2 times.
Using such chelating agent (dithiocar-bamate polymer) agricultural land soil be also be very easy to letter
Single, due to its water solubility, it can be completed by irrigation system.During irrigation, two sulphur described in irrigation water are added
For carbaminate polymeric chelant.It therefore can be quickly anti-with the heavy metal in agricultural land soil, preferably heavy metal ion
It answers, this is because heavy metal, preferably heavy metal ion are also water-soluble.
Method of the invention allows to reuse processed agricultural land soil for agricultural tillage purpose, and crop growth will not
It is further contaminated, this is because the chelate formed between heavy metal and dithiocar-bamate polymer, not water-soluble
Property and its high molecular weight, therefore will not enter crop root part film the fact.
Claims (8)
1. reparation is by a kind of method that the agricultural land soil of heavy metal pollution is using stabilization and fixation, the method includes following steps
It is rapid: at least one water-soluble dithiocar-bamate polymer of Xiang Suoshu soil addition, the water solubility dithiocarbamates first
It includes molecular weight Mw between 2000 and 200,000g/mol that silicate polymer, which has,.
2. according to the method described in claim 1, the wherein molecular weight Mw of the water-soluble dithiocar-bamate polymer
Between 4,000 and 150,000g/mol.
3. method according to claim 1 or 2, wherein the water solubility dithiocar-bamate polymer is polyethylene
Imines dithiocar-bamate.
4. method according to claim 1 or 2, wherein two kinds of addition water-soluble dithiocar-bamate polymer, one
Kind has the molecular weight being included between 2,000 and 50,000g/mol, and another kind has included in 70,000 and 200,000g/
Molecular weight between mol.
5. method according to claim 1 or 2, benefit need not be separated in the soil, heavy metal and two sulphur
For the chela conjugate formed between carbaminate polymer.
6. method according to claim 1 or 2, wherein the ginseng dosage of water-soluble dithiocar-bamate polymer is institute
At least 1.5 times for stating the content of beary metal concentration of agricultural land soil.
7. method according to claim 1 or 2, wherein the metal is heavy metal.
8. method according to claim 1 or 2, wherein heavy metal choosing be Pb, Hg, Cu, Cd, Ag, Ni, Co, Ga and
Cr。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810153985.XA CN110184069A (en) | 2018-02-22 | 2018-02-22 | The method for repairing the agricultural land soil by heavy metal pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810153985.XA CN110184069A (en) | 2018-02-22 | 2018-02-22 | The method for repairing the agricultural land soil by heavy metal pollution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110184069A true CN110184069A (en) | 2019-08-30 |
Family
ID=67713428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810153985.XA Pending CN110184069A (en) | 2018-02-22 | 2018-02-22 | The method for repairing the agricultural land soil by heavy metal pollution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110184069A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08332475A (en) * | 1995-06-08 | 1996-12-17 | Unitika Ltd | Heavy metal fixative and method for making heavy metal harmless using the fixative |
| US5772776A (en) * | 1995-07-07 | 1998-06-30 | Holbein; Bruce Edward | Process for the recovery of heavy metals such as lead from metal contaminated soil |
| JP2001121133A (en) * | 1999-10-28 | 2001-05-08 | Eco-Techno Corp | Insolubilizing method of soil containing soluble heavy metal |
| JP2003145089A (en) * | 2001-11-08 | 2003-05-20 | Kurita Water Ind Ltd | Hexavalent chromium insolubilizing agent and method of insolubilizing hexavalent chromium |
| JP2005144255A (en) * | 2003-11-12 | 2005-06-09 | Tosoh Corp | Method of processing sludge or soil for detoxification |
| CN104610972A (en) * | 2014-12-18 | 2015-05-13 | 淄博金鼎光电科技有限公司 | Heavy metal polluted soil treatment processing agent and preparation method thereof |
| CN105154093A (en) * | 2015-07-23 | 2015-12-16 | 永清环保股份有限公司 | Stabilizer for treating lead contaminated soil and application thereof |
| CN105820821A (en) * | 2016-05-18 | 2016-08-03 | 北京建筑材料科学研究总院有限公司 | Lead-zinc combined contaminated soil immobilizing agent and preparation method thereof |
| CN106281342A (en) * | 2015-06-08 | 2017-01-04 | 南京凯杰环境技术有限公司 | A kind of persistent high efficiency triazole type Compound Heavy Metals fixing-stable formed material composition |
| CN107470343A (en) * | 2017-08-03 | 2017-12-15 | 上海市环境工程设计科学研究院有限公司 | A kind of method of composite drug processing high-concentration lead contaminated soil |
| CN107557015A (en) * | 2017-09-01 | 2018-01-09 | 中国电建集团成都勘测设计研究院有限公司 | Heavy-metal contaminated soil renovation agent and its application method |
-
2018
- 2018-02-22 CN CN201810153985.XA patent/CN110184069A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08332475A (en) * | 1995-06-08 | 1996-12-17 | Unitika Ltd | Heavy metal fixative and method for making heavy metal harmless using the fixative |
| US5772776A (en) * | 1995-07-07 | 1998-06-30 | Holbein; Bruce Edward | Process for the recovery of heavy metals such as lead from metal contaminated soil |
| JP2001121133A (en) * | 1999-10-28 | 2001-05-08 | Eco-Techno Corp | Insolubilizing method of soil containing soluble heavy metal |
| JP2003145089A (en) * | 2001-11-08 | 2003-05-20 | Kurita Water Ind Ltd | Hexavalent chromium insolubilizing agent and method of insolubilizing hexavalent chromium |
| JP2005144255A (en) * | 2003-11-12 | 2005-06-09 | Tosoh Corp | Method of processing sludge or soil for detoxification |
| CN104610972A (en) * | 2014-12-18 | 2015-05-13 | 淄博金鼎光电科技有限公司 | Heavy metal polluted soil treatment processing agent and preparation method thereof |
| CN106281342A (en) * | 2015-06-08 | 2017-01-04 | 南京凯杰环境技术有限公司 | A kind of persistent high efficiency triazole type Compound Heavy Metals fixing-stable formed material composition |
| CN105154093A (en) * | 2015-07-23 | 2015-12-16 | 永清环保股份有限公司 | Stabilizer for treating lead contaminated soil and application thereof |
| CN105820821A (en) * | 2016-05-18 | 2016-08-03 | 北京建筑材料科学研究总院有限公司 | Lead-zinc combined contaminated soil immobilizing agent and preparation method thereof |
| CN107470343A (en) * | 2017-08-03 | 2017-12-15 | 上海市环境工程设计科学研究院有限公司 | A kind of method of composite drug processing high-concentration lead contaminated soil |
| CN107557015A (en) * | 2017-09-01 | 2018-01-09 | 中国电建集团成都勘测设计研究院有限公司 | Heavy-metal contaminated soil renovation agent and its application method |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190919 Address after: The French - Pu trom Mendez Applicant after: S.P.C.M. Joint Stock Company Address before: Rika Univ. Applicant before: SNF Canada Ltd. |
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