CN110184070A - A kind of curing and stabilizing agent and application method for heavy metal pollution site remediation - Google Patents
A kind of curing and stabilizing agent and application method for heavy metal pollution site remediation Download PDFInfo
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- CN110184070A CN110184070A CN201910225007.6A CN201910225007A CN110184070A CN 110184070 A CN110184070 A CN 110184070A CN 201910225007 A CN201910225007 A CN 201910225007A CN 110184070 A CN110184070 A CN 110184070A
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- medicament
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- 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
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- 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
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of curing and stabilizing agents and application method for heavy metal pollution site remediation, which is characterized in that including medicament a and medicament b；The medicament a is according to mass fraction meter, including following components: 10-20 parts of lime stone, 5-15 parts of quick lime, 40-60 parts of flyash, 10-30 parts of diatomite, 3-10 parts of natural zeolite；The medicament b is according to mass fraction meter, including following components: 10-30 parts of calcium monohydrogen phosphate, 20-40 parts of calcium polysulfide, dithiocarbamate-based salt 10-30 parts, 5-15 parts of humic acid, 3-8 parts of molasses, 5-15 parts of iron and manganese oxides；The curing and stabilizing agent Chinese medicine a and medicament b, according to mass percentage, dosage is respectively 76~95% and 5%~24%.The present invention solve the problems, such as existing chemical remediation technology there are secondary pollution, cause soil quality to decline, the content of Heavy Metals in Contaminated Soils lead can through the invention significantly reduced, meets relevant criterion, at the same it is without secondary pollution, do not influence soil quality.
Description
Technical field
The invention belongs to contaminated soil remediation technical fields, and in particular to a kind of consolidating for heavy metal pollution site remediation
Change stabilization agent and application method.
Background technique
Heavy metal pollution is a kind of typical soil pollution, usually has concealment, chronicity and cumulative bad.Solidification is stablized
Change technology is the recovery technique in common heavy metal pollution place, and cardinal principle is to repair medicine by adding into contaminated soil
Agent, to reduce the diffusion mobility of heavy metal in the soil.The curing and stabilizing agent that the country uses at present is substantially directly to buy
Based on external product or imitated external product, domestic curing and stabilizing agent with independent intellectual property rights also compares shortage.
The general applied widely and good feature of repairing effect of import medicament, but price is relatively high.It needs to develop at present a kind of suitable
For the medicament of domestic heavy metal pollution site remediation, regulation effect both can guarantee, while price is relatively low.
Summary of the invention
It is an object of that present invention to provide a kind of curing and stabilizing agent for heavy metal pollution site remediation and users
Method, solve the problems, such as existing chemical remediation technology there are secondary pollution, cause soil quality to decline, can make to pollute through the invention
The content of heavy metal in soil lead significantly reduces, and meets relevant criterion, at the same it is without secondary pollution, do not influence soil quality.
Technical scheme is as follows:
A kind of curing and stabilizing agent for heavy metal pollution site remediation, including medicament a and medicament b；
Medicament a is according to mass fraction meter, including following components: 10-20 parts of lime stone, 5-15 parts of quick lime, and flyash 40-
60 parts, 10-30 parts of diatomite, 3-10 parts of natural zeolite；
Medicament b is according to mass fraction meter, including following components: 10-30 parts of calcium monohydrogen phosphate, 20-40 parts of calcium polysulfide, and two sulphur
For 10-30 parts of carbamic acid base salt, 5-15 parts of humic acid, 3-8 parts of molasses, 5-15 parts of iron and manganese oxides.
Curing and stabilizing agent Chinese medicine a and medicament b, according to mass percentage, dosage is respectively 76~95% and 5%
~24%.
A kind of application method of the curing and stabilizing agent for heavy metal pollution site remediation,
(1) curing and stabilizing agent of the 3-8% of contaminated soil quality is added into contaminated soil, after mixing evenly,
(2) soil stirred evenly is conserved 3-7 days；
(3) soil after maintenance is detected, measures the leaching concentration of heavy metal in soil, compared with acceptance criteria
To determining whether to meet the requirements, if met, carry out in next step, if do not met, repeat the above steps (1)-(3), directly
To meeting acceptance criteria；
(4) soil for meeting acceptance criteria is subjected to resource utilization.
Wherein, soil pH can be improved in lime stone and quick lime, increases soil variable charge soil, and most heavy metals generate hardly possible
Molten metal carbonate.
Flyash is the fine ash that catching is got off in flue gas after coal combustion, is that the primary solids of coal-fired power plant's discharge are useless
Object.Main oxides group becomes SiO2、Al2O3、FeO、Fe2O3、CaO、TiO2Deng, can by improve soil pH value, absorption and
The mechanism such as solidification realize heavy metal stabilization.
Diatomite main component is silica and aluminium oxide, and porosity height, large specific surface area, absorption property are strong, wear-resisting, resistance to
Acid strong, increase soil variable charge soil.Largely different types of hydroxyl can be reacted into other substances on diatomite surface
Key.
Natural zeolite main component is sodium aluminosilicate, and there are many cavity and duct in centre, has stronger adsorption capacity；
The cation of crystalline framework contacts weaker with skeleton, and cationic exchange can occur；Acid and alkali-resistance and temperature change capabilities are strong.
Calcium monohydrogen phosphate can form Sulfates heavy metal precipitation with heavy metal, while there are also certain adsorption effects, simultaneously
There is extraordinary repairing effect to lead.
Calcium polysulfide can form extremely difficult molten metal sulfide precipitating with heavy metal, and solubility is far smaller than metal hydrogen-oxygen
Compound has extraordinary regulation effect to Cr VI.
Dithiocarbamate-based salt (DTC) is that organic primary amine or secondary amine with carbon disulfide react raw under alkaline condition
At a kind of compound, can be complexed to form super molecular complex with heavy metal, and can net catch and adsorb colloidal solid.
Humic acid is the larger molecular organics matter being widely present in nature, can improve soil environment, promotes soil granular
Structure is formed, and the soil weight is reduced.
Molasses are the byproducts of sugar industry, a large amount of fermentable sugars, antiacid alkali and oxidation are mainly contained, to bivalent cation
There is very strong sequestering power, organic chelate can be formed with metal ion.
Obligate suction-operated of the iron and manganese oxides to heavy metal element not only has control to the biological effectiveness for measuring metal
Production is used, and also plays important control action to the migration of many heavy metal contaminants in nature and enrichment.
Specific embodiment
Embodiment 1
A kind of curing and stabilizing agent for heavy metal pollution site remediation, including following components:
(1) medicament a: 10 parts of lime stone, 5 parts of quick lime, 40 parts of flyash, 10 parts of diatomite, 3 parts of natural zeolite；
(2) medicament b: 10 parts of calcium monohydrogen phosphate, 20 parts of calcium polysulfide, 10 parts of dithiocarbamate-based salt, humic acid 5
Part, 3 parts of molasses, 5 parts of iron and manganese oxides.
Curing and stabilizing agent Chinese medicine a and medicament b, according to mass percentage, dosage is respectively 95% and 5%.
A kind of application method of the curing and stabilizing agent for heavy metal pollution site remediation,
(1) 3% curing and stabilizing agent of contaminated soil quality is added into contaminated soil, after mixing evenly,
(2) soil stirred evenly is conserved 3 days；
(3) soil after maintenance is detected, measures the leaching concentration of heavy metal in soil, compared with acceptance criteria
To meeting the requirements；
(4) soil for meeting acceptance criteria is subjected to resource utilization.
Embodiment 2
A kind of curing and stabilizing agent for heavy metal pollution site remediation, including following components:
(1) medicament a: 15 parts of lime stone, 10 parts of quick lime, 50 parts of flyash, 20 parts of diatomite, 5 parts of natural zeolite；
(2) medicament b: 20 parts of calcium monohydrogen phosphate, 30 parts of calcium polysulfide, 20 parts of dithiocarbamate-based salt, humic acid 10
Part, 5 parts of molasses, 10 parts of iron and manganese oxides.
Curing and stabilizing agent Chinese medicine a and medicament b, according to mass percentage, dosage is respectively 76% and 24%.
A kind of application method of the curing and stabilizing agent for heavy metal pollution site remediation,
(1) 8% curing and stabilizing agent of contaminated soil quality is added into contaminated soil, after mixing evenly,
(2) soil stirred evenly is conserved 7 days；
(3) soil after maintenance is detected, measures the leaching concentration of heavy metal in soil, compared with acceptance criteria
Determination is met the requirements；
(4) soil for meeting acceptance criteria is subjected to resource utilization.
Embodiment 3
A kind of curing and stabilizing agent for heavy metal pollution site remediation, including following components:
(1) medicament a: 20 parts of lime stone, 15 parts of quick lime, 60 parts of flyash, 30 parts of diatomite, 10 parts of natural zeolite；
(2) medicament b: 30 parts of calcium monohydrogen phosphate, 40 parts of calcium polysulfide, 30 parts of dithiocarbamate-based salt, humic acid 15
Part, 8 parts of molasses, 15 parts of iron and manganese oxides.
Curing and stabilizing agent Chinese medicine a and medicament b, according to mass percentage, dosage is respectively 80% and 20%.
A kind of application method of the curing and stabilizing agent for heavy metal pollution site remediation,
(1) 3% curing and stabilizing agent of contaminated soil quality is added into contaminated soil, after mixing evenly,
(2) soil stirred evenly is conserved 3 days；
(3) soil after maintenance is detected, measures the leaching concentration of heavy metal in soil, compared with acceptance criteria
Determination is unsatisfactory for meeting the requirements；3% curing and stabilizing agent of contaminated soil quality is added into contaminated soil, stirring is equal
After even, the soil stirred evenly is conserved 3 days；Soil after maintenance is detected, the leaching for measuring heavy metal in soil is dense
Determination is compared with acceptance criteria and meets the requirements for degree；(4) soil for meeting acceptance criteria is subjected to resource utilization.
Claims (2)
1. a kind of curing and stabilizing agent for heavy metal pollution site remediation, which is characterized in that including medicament a and medicament b；
The medicament a is according to mass fraction meter, including following components: 10-20 parts of lime stone, 5-15 parts of quick lime, and flyash
40-60 parts, 10-30 parts of diatomite, 3-10 parts of natural zeolite；
The medicament b is according to mass fraction meter, including following components: 10-30 parts of calcium monohydrogen phosphate, 20-40 parts of calcium polysulfide, and two
10-30 parts of thiocarbamic group salt, 5-15 parts of humic acid, 3-8 parts of molasses, 5-15 parts of iron and manganese oxides；
The curing and stabilizing agent Chinese medicine a and medicament b, according to mass percentage, dosage is respectively 76~95% Hes
5%~24%.
2. a kind of application method of the curing and stabilizing agent for heavy metal pollution site remediation, which is characterized in that including with
Lower step:
(1) curing and stabilizing agent of the 3-8% of contaminated soil quality is added into contaminated soil, after mixing evenly,
(2) soil stirred evenly is conserved 3-7 days；
(3) soil after maintenance is detected, measures the leaching concentration of heavy metal in soil, be compared with acceptance criteria really
It is fixed whether to meet the requirements, if met, carry out in next step, if do not met, repeat the above steps (1)-(3), until symbol
Close acceptance criteria；
(4) soil for meeting acceptance criteria is subjected to resource utilization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225007.6A CN110184070A (en) | 2019-03-22 | 2019-03-22 | A kind of curing and stabilizing agent and application method for heavy metal pollution site remediation |
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| CN201910225007.6A CN110184070A (en) | 2019-03-22 | 2019-03-22 | A kind of curing and stabilizing agent and application method for heavy metal pollution site remediation |
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| CN110184070A true CN110184070A (en) | 2019-08-30 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564424A (en) * | 2019-09-16 | 2019-12-13 | 上海中新国源环保集团股份有限公司 | Chemical polluted soil remediation composition and remediation method |
| CN111040769A (en) * | 2019-12-17 | 2020-04-21 | 河南省地质环境规划设计院有限公司 | Soil restoration improving agent and soil restoration improving method |
| CN111330966A (en) * | 2020-03-10 | 2020-06-26 | 上海澄域环保工程有限公司 | In-situ slurry stabilization restoration method for heavy metal polluted site |
| CN111570502A (en) * | 2020-06-04 | 2020-08-25 | 杭州师范大学钱江学院 | Chromium-contaminated soil remediation method |
| CN111570501A (en) * | 2020-06-04 | 2020-08-25 | 杭州师范大学钱江学院 | Remediation method for improving remediation effect of heavy metal contaminated soil |
| CN112410043A (en) * | 2020-12-01 | 2021-02-26 | 中科土壤环境科技(江苏)有限公司 | Method for restoring heavy metal polluted farmland and conditioner |
| CN112588811A (en) * | 2020-11-26 | 2021-04-02 | 江西省三汇科技有限公司 | Remediation agent for heavy metal industrial polluted site and remediation method thereof |
Citations (3)
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| JPH06116558A (en) * | 1992-10-02 | 1994-04-26 | Taihei Bussan Kk | Soil improving agent composition comprising sulfur and humic acid as active component |
| CN102766465A (en) * | 2012-07-31 | 2012-11-07 | 湖南永清环境修复有限公司 | Ion mineralization stabilizer for treating soil with heavy metal pollution and application method thereof |
| CN105985780A (en) * | 2016-02-24 | 2016-10-05 | 凤阳徽亨商贸有限公司 | Soil heavy metal restoration agent mainly prepared from molasses |
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2019
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH06116558A (en) * | 1992-10-02 | 1994-04-26 | Taihei Bussan Kk | Soil improving agent composition comprising sulfur and humic acid as active component |
| CN102766465A (en) * | 2012-07-31 | 2012-11-07 | 湖南永清环境修复有限公司 | Ion mineralization stabilizer for treating soil with heavy metal pollution and application method thereof |
| CN105985780A (en) * | 2016-02-24 | 2016-10-05 | 凤阳徽亨商贸有限公司 | Soil heavy metal restoration agent mainly prepared from molasses |
Non-Patent Citations (1)
| Title |
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| 王绍文 等: "《重金属废水治理技术》", 30 November 1993, 冶金工业出版社 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564424A (en) * | 2019-09-16 | 2019-12-13 | 上海中新国源环保集团股份有限公司 | Chemical polluted soil remediation composition and remediation method |
| CN111040769A (en) * | 2019-12-17 | 2020-04-21 | 河南省地质环境规划设计院有限公司 | Soil restoration improving agent and soil restoration improving method |
| CN111040769B (en) * | 2019-12-17 | 2021-03-23 | 河南省地质环境规划设计院有限公司 | Soil restoration improving agent and soil restoration improving method |
| CN111330966A (en) * | 2020-03-10 | 2020-06-26 | 上海澄域环保工程有限公司 | In-situ slurry stabilization restoration method for heavy metal polluted site |
| CN111570502A (en) * | 2020-06-04 | 2020-08-25 | 杭州师范大学钱江学院 | Chromium-contaminated soil remediation method |
| CN111570501A (en) * | 2020-06-04 | 2020-08-25 | 杭州师范大学钱江学院 | Remediation method for improving remediation effect of heavy metal contaminated soil |
| CN112588811A (en) * | 2020-11-26 | 2021-04-02 | 江西省三汇科技有限公司 | Remediation agent for heavy metal industrial polluted site and remediation method thereof |
| CN112410043A (en) * | 2020-12-01 | 2021-02-26 | 中科土壤环境科技(江苏)有限公司 | Method for restoring heavy metal polluted farmland and conditioner |
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Application publication date: 20190830 |