CN108441224A - A kind of environmentally friendly medicament reducing various heavy leaching concentration - Google Patents
A kind of environmentally friendly medicament reducing various heavy leaching concentration Download PDFInfo
- Publication number
- CN108441224A CN108441224A CN201710082678.2A CN201710082678A CN108441224A CN 108441224 A CN108441224 A CN 108441224A CN 201710082678 A CN201710082678 A CN 201710082678A CN 108441224 A CN108441224 A CN 108441224A
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- China
- Prior art keywords
- medicament
- environmentally friendly
- sodium
- various heavy
- perphosphate
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
-
- 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
Abstract
The invention discloses a kind of environmentally friendly medicament reducing various heavy leaching concentration, the formula of the environmental protection medicament is：The perphosphate of the sodium metasilicate of 0.5 35wt%, 0.7 41wt%, the ferrous sulfate of 0.3 40wt%, the sodium humate of 1 33wt%, the ethylenediamine tetra-acetic acid of 0 22wt% and 0 20% sodium hydroxide.Medicament of the present invention can carry out extemporaneous preparation according to the contamination class of on-site soil, pollution level, while avoiding stabilisation and repairing the shortcomings that fixed medicament composition is difficult to adapt to contamination class, pollution level variation；It is high using reaction efficiency when slurry medicament progress heavy-metal contaminated soil and groundwater remediation；The Leaching reduction of the heavy metal of the environmental protection medicament be conducive in soil especially copper, lead, cadmium, arsenic.
Description
Technical field
The present invention relates to a kind of Heavy Metal Pollution Control technical field, specifically a kind of reduction various heavy leaching concentration
Environmentally friendly medicament.
Background technology
Science and technology is a double-edged sword, and science and technology is grown rapidly since 20th century, is promoted expanding economy, is improved people
The living standard of the people, however, at the same time, the mankind have also paid heavy cost.Due to Industrial " three Waste " motor-vehicle tail-gas
The use of discharge, sewage irrigation and pesticide, herbicide, chemical fertilizer etc. and the development of mining industry, seriously polluted soil, water quality and
Air.
Heavy metal pollution refers to the environmental pollution as caused by density in 5 or more metal or its compound, from environmental pollution
Aspect, heavy metal refer to the significant heavy metals of bio-toxicities such as mercury, cadmium, lead and " metalloid " --- -- arsenic.Human body is poisoned most
Big has 5 kinds：Lead, mercury, arsenic, cadmium.These heavy metals cannot be decomposed in water, and people drinks the amplification of rear toxicity, with its in water
He combines the organic matter for generating toxicity bigger by toxin.Mainly by mining, exhaust gas discharge, sewage irrigation and use huge sum of money metal products etc.
Caused by human factor.Prodigious harm is caused to the health of environment and people.At the beginning of 4 months 2011, the first " 12th Five-Year Plan " of China is special
Planning ---《Heavy metal pollution integrated control " 12th Five-Year Plan " is planned》It obtains State Council formally to give an written reply, control program makes every effort to control 5
Heavy metal species.
The situation is tense for heavy metal pollution at present, and improvement is carried out to it and has become current very urgent problem.Using stabilization
Chemical drug agent is considered as a kind of effective repair the leaching concentration that reduces the heavy metal in soil and all kinds of danger wastes
Compound method almost accounts for the 20-30% of all heavy metal pollution class rehablitation projects, therefore the use of stabilization agent becomes the technology
Key factor.The General Principle of chemical stabilization method is by the way that chemical stabilization medicament is added into pollutant, is allowed to and pollutes
Object chemically reacts, and free state heavy metal is allowed to form stable substance and lose toxicity.This method wants chemical agent
Ask higher.For a long time, most chemical stabilization medicaments can only continue some months even several days to the stablizing effect of soil, nothing
The compound that method guarantee generates after administering can steadily in the long term exist in nature, and in environmental change, heavy metal is easy to be weighed
New activation, generates secondary pollution.Therefore, the present invention provides a kind of environmentally friendly medicine that can efficiently reduce various heavy leaching concentration
Agent, and application method is simple, using effect is good.
Invention content
The purpose of the present invention is to provide a kind of environmentally friendly medicaments reducing various heavy leaching concentration, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the present invention provides the following technical solutions：
A kind of environmentally friendly medicament of reduction various heavy leaching concentration, the formula of the environmental protection medicament are：0.5-35wt%
Sodium metasilicate, 0.7-41wt% perphosphate, the ferrous sulfate of 0.3-40wt%, the sodium humate of 1-33wt%, 0-
The ethylenediamine tetra-acetic acid of 22wt% and the sodium hydroxide of 0-20%.
As a further solution of the present invention：It is described environmental protection medicament formula be：Sodium metasilicate, the 1-35wt% of 1-25wt%
Perphosphate, the ferrous sulfate of 1-35wt%, the sodium humate of 1-25wt%, the ethylenediamine tetra-acetic acid and 0- of 0-15wt%
15% sodium hydroxide.
As a further solution of the present invention：It is described environmental protection medicament formula be：The sodium metasilicate of 12wt%, the mistake of 28wt%
Phosphate, the ferrous sulfate of 33wt%, the sodium humate of 18wt%, the ethylenediamine tetra-acetic acid of 6wt% and 7% sodium hydroxide.
As a further solution of the present invention：The perphosphate is one in calcium superphosphate, peroxophosphoric acid sodium, potassium superphosphate
Kind is a variety of.
As a further solution of the present invention：The perphosphate is calcium superphosphate.
As a further solution of the present invention：It further include the surfactant of 1-5wt%.
As a further solution of the present invention：The surfactant is that anion surfactant or non-ionic surface are lived
Property agent.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) medicament of the present invention can carry out extemporaneous preparation according to the contamination class of on-site soil, pollution level, avoid simultaneously
It stabilizes and repairs the shortcomings that fixed medicament composition is difficult to adapt to contamination class, pollution level variation；
(2) in-situ immobilization mode can be used when using slurry medicament to carry out heavy-metal contaminated soil and groundwater remediation, it is former
Position repair process can be handled contaminated soil according to place situation, and slurry medicament is injected contaminated soil using professional equipment
And underground water or stir in situ implementation is carried out, it can also be used showering mode, mixing evenly, reduces the use ratio of medicament
Example improves repairing effect.Showering is such as carried out, first contaminated soil can be pre-processed, is reached after soil breaking is sieved
5mm soil particle diameters below, then soil is stirred with medicament and is reacted, reaction efficiency can be increased substantially.
(3) formula of the environmentally friendly medicament can add a certain amount of surface-active according to the difference of contaminated soil property
Agent is conducive to the Leaching reduction of heavy metal especially copper, lead, cadmium, the arsenic in soil；
(4) in addition, the environmental protection medicament preparation method is simple, production cost is low, and application method is simple, and using effect is good.
Specific implementation mode
The technical solution of this patent is described in more detail With reference to embodiment.
Embodiment 1
A kind of environmentally friendly medicament of reduction various heavy leaching concentration, the formula of the environmental protection medicament are：The silicon of 0.5wt%
The perphosphate of sour sodium, 0.7wt%, the ferrous sulfate of 0.3wt%, the sodium humate of 1wt%, the ethylenediamine tetra-acetic acid of 0wt%
(EDTA) and 0% sodium hydroxide.The perphosphate is potassium superphosphate.
Embodiment 2
A kind of environmentally friendly medicament of reduction various heavy leaching concentration, the formula of the environmental protection medicament are：The silicon of 35wt%
The perphosphate of sour sodium, 41wt%, the ferrous sulfate of 40wt%, the sodium humate of 33wt%, the ethylenediamine tetra-acetic acid of 22wt%
With 20% sodium hydroxide.The perphosphate is peroxophosphoric acid sodium.
Embodiment 3
A kind of environmentally friendly medicament of reduction various heavy leaching concentration, the formula of the environmental protection medicament are：The silicon of 12wt%
The perphosphate of sour sodium, 28wt%, the ferrous sulfate of 33wt%, the sodium humate of 18wt%, the ethylenediamine tetra-acetic acid of 6wt% and
7% sodium hydroxide further includes the surfactant of 1wt%.The surfactant is anion surfactant.The mistake
Phosphate is calcium superphosphate.
Embodiment 4
A kind of environmentally friendly medicament of reduction various heavy leaching concentration, the formula of the environmental protection medicament are：The silicon of 10wt%
The perphosphate of sour sodium, 8wt%, the ferrous sulfate of 5wt%, the sodium humate of 7wt%, the ethylenediamine tetra-acetic acid of 2wt% and 3%
Sodium hydroxide.It further include the surfactant of 5wt%.The surfactant is nonionic surfactant.It is described to cross phosphorus
Hydrochlorate is the mixture of calcium superphosphate, peroxophosphoric acid sodium.
Embodiment 5
A kind of environmentally friendly medicament of reduction various heavy leaching concentration, the formula of the environmental protection medicament are：The silicon of 22wt%
The perphosphate of sour sodium, 31wt%, the ferrous sulfate of 33wt%, the sodium humate of 20wt%, the ethylenediamine tetra-acetic acid of 14wt%
With 11% sodium hydroxide.It further include the surfactant of 3wt%.The surfactant is anion surfactant.Institute
State the mixture that perphosphate is calcium superphosphate, peroxophosphoric acid sodium, potassium superphosphate.
Experimental example 1
Heavy-metal contaminated soil is administered by 1% additive amount using environmentally friendly medicament made of embodiment 3, after reaction
Maintenance carries out Leaching Heavy Metals test in 3 days again.Test result is shown in Table 1.
1 Leaching Heavy Metals test result of table
Remarks：To the evaluation of repairing effect using leaching method (《Solid waste Leaching leaching method sulfonitric
Method》(HJ/T299-2007)), the contaminants associated index of leachate need to reach《Groundwater Environmental Quality standard》(GB/
T14848-93 IV class standards in).
Experimental example 2
Using environmentally friendly medicament made of embodiment 3 by 1% additive amount according to 2% additive amount to heavy-metal contaminated soil
It is administered, is conserved 3 days after reaction and carry out Leaching Heavy Metals test again.Test result is shown in Table 2.
2 Leaching Heavy Metals test result of table
Remarks：To the evaluation of repairing effect using leaching method (《Solid waste Leaching leaching method sulfonitric
Method》(HJ/T299-2007)), the contaminants associated index of leachate need to reach《Groundwater Environmental Quality standard》(GB/
T14848-93 IV class standards in).
It can be seen from experimental example 1-2 using environmentally friendly medicament made of embodiment 3 by 1% additive amount to heavy metal-polluted
The regulation effect of dye soil is sufficiently close to the regulation effect of heavy-metal contaminated soil with the additive amount by 2%, that is, uses less
Dosage, so that it may reach preferably regulation effect, and the Leaching of Heavy Metals concentration of the heavy-metal contaminated soil after administering significantly drops
Low, the contaminants associated index of leachate reaches《Groundwater Environmental Quality standard》(GB/T14848-93) IV class standards in.
Therefore, which is effective for reducing various heavy leaching concentration.
The present invention theoretical foundation be：
Sodium metasilicate：Sodium metasilicate (Sodium silicate), chemical substance, chemical formula Na2SiO3·9H2O, in it is colourless just
Bipyramid crystallization or white to canescence block or powdered to be handed over, is a kind of water-soluble silicate, aqueous solution is commonly called as waterglass,
It is a kind of mine binder, 6 molecular crystalline water is lost at 100 DEG C, it is soluble easily in water, it is dissolved in diluted sodium hydroxide solution, does not dissolve in second
Alcohol and acid.Sodium metasilicate cohesive force is strong, intensity is higher, acid resistance, heat-resist, alkali resistance and poor water resistance, common in building
Waterglass is the aqueous solution of sodium metasilicate.It is widely used in conventional cast, hot investment casting, papermaking, ceramics, clay, ore dressing, kaolinite
The various fields such as soil, washing.
Ferrous sulfate：Green vitriol (chemical formula：FeSO4·7H2O it is) a kind of chemical substance, is errous sulfate crystal, English name
Referred to as：Ferrous sulfate are column or granular aggregate, in irregular blocky.Blue-green, green are with streak white.
Molecular weight is 278.05, pH value 3, and fusing point is 64 DEG C, and heat-flash decomposition is dissolved in water, glycerine, does not dissolve in ethyl alcohol.Ferrous sulfate heptahydrate
It is the byproduct of output in a kind of rare metal product process of Production By Sulfuric Acid Process, product appearance is that light green or pistac crystallize
Solid.It is added and discusses and decides the pH value that dosage is adjusted in alkaline water, organically combine with suspended matter in water, and accelerate to precipitate, mainly answer
For purification of water quality and Industrial Wastewater Treatment, while there is bactericidal effect.
Sodium humate：It agriculturally can be used as fertilizer and plant growth substance.Crop growth can be stimulated, nutrition is helped
The absorption of element improves soil texture, improves crop drought resistance ability, promotes nitrogen-fixing bacteria activation.Industrially it can be used for increasing
Yeast ability improves ethanol production, can also make lubricant, treating agent of drilling mud, ceramic material additive, flotation beneficiation and inhibit
Agent shares with soda ash and makees boiler compound etc.；It pharmaceutically can be used as balneation medicament.
Ethylenediamine tetra-acetic acid：Usually it is called EDTA, is a kind of organic compound.It is a six tooth ylidene ligands, can be with chela
Write various metals ion.Its 4 acid and the part of 2 amine all can be used as the tooth of ligand, with manganese (II), copper (II), iron (III)
And the metal ions such as cobalt (II) form chelate.Purposes：Calcium ion complexing agent, detergent, blood anticoagulant.It is used in Biochemical Research
Make calcium chelating agent, eliminates the inhibiting effect in enzymic catalytic reaction caused by micro heavy.As detergent, blood anticoagulant and
Make complexing agent, pH adjusting agent etc. in electroplate liquid.
The environmentally friendly medicament of the reduction various heavy leaching concentration has the following advantages：
(1) medicament of the present invention can carry out extemporaneous preparation according to the contamination class of on-site soil, pollution level, avoid simultaneously
It stabilizes and repairs the shortcomings that fixed medicament composition is difficult to adapt to contamination class, pollution level variation；
(2) in-situ immobilization mode can be used when using slurry medicament to carry out heavy-metal contaminated soil and groundwater remediation, it is former
Position repair process can be handled contaminated soil according to place situation, and slurry medicament is injected contaminated soil using professional equipment
And underground water or stir in situ implementation is carried out, it can also be used showering mode, mixing evenly, reduces the use ratio of medicament
Example improves repairing effect.Showering is such as carried out, first contaminated soil can be pre-processed, is reached after soil breaking is sieved
5mm soil particle diameters below, then soil is stirred with medicament and is reacted, reaction efficiency can be increased substantially.
(3) formula of the environmentally friendly medicament can add a certain amount of surface-active according to the difference of contaminated soil property
Agent is conducive to the Leaching reduction of heavy metal especially copper, lead, cadmium, the arsenic in soil；
(4) in addition, the environmental protection medicament preparation method is simple, production cost is low, and application method is simple, and using effect is good.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, one skilled in the relevant art within the scope of knowledge, can also be under the premise of not departing from this patent objective
It makes a variety of changes.
Claims (7)
1. it is a kind of reduce various heavy leaching concentration environmentally friendly medicament, which is characterized in that it is described environmental protection medicament formula be：
The sodium metasilicate of 0.5-35wt%, the perphosphate of 0.7-41wt%, the ferrous sulfate of 0.3-40wt%, the humic acid of 1-33wt%
Sodium, the ethylenediamine tetra-acetic acid of 0-22wt% and the sodium hydroxide of 0-20%.
2. the environmentally friendly medicament according to claim 1 for reducing various heavy leaching concentration, which is characterized in that the environmental protection
The formula of medicament is：The sodium metasilicate of 1-25wt%, the perphosphate of 1-35wt%, the ferrous sulfate of 1-35wt%, 1-25wt%
Sodium humate, the ethylenediamine tetra-acetic acid of 0-15wt% and the sodium hydroxide of 0-15%.
3. the environmentally friendly medicament according to claim 1 for reducing various heavy leaching concentration, which is characterized in that the environmental protection
The formula of medicament is：The sodium metasilicate of 12wt%, the perphosphate of 28wt%, the ferrous sulfate of 33wt%, the humic acid of 18wt%
Sodium, the ethylenediamine tetra-acetic acid of 6wt% and 7% sodium hydroxide.
4. according to the environmentally friendly medicament of any reduction various heavy leaching concentrations of claim 1-3, which is characterized in that institute
It is one or more in calcium superphosphate, peroxophosphoric acid sodium, potassium superphosphate to state perphosphate.
5. according to the environmentally friendly medicament of any reduction various heavy leaching concentrations of claim 1-3, which is characterized in that institute
It is calcium superphosphate to state perphosphate.
6. according to the environmentally friendly medicament of any reduction various heavy leaching concentrations of claim 1-3, which is characterized in that also
Surfactant including 1-5wt%.
7. the environmentally friendly medicament according to claim 6 for reducing various heavy leaching concentration, which is characterized in that the surface
Activating agent is anion surfactant or nonionic surfactant.
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| CN201710082678.2A CN108441224A (en) | 2017-02-16 | 2017-02-16 | A kind of environmentally friendly medicament reducing various heavy leaching concentration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343528A (en) * | 2019-07-12 | 2019-10-18 | 河南省明创环境科技有限公司 | The method repaired the medicament of chromium-polluted soil using Filling Principle and repair chromium-polluted soil using Filling Principle |
| CN113182338A (en) * | 2021-04-25 | 2021-07-30 | 三明学院 | Method for restoring molybdenum-polluted soil by ultrasonic/oscillation-assisted chemical leaching |
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| CN110343528A (en) * | 2019-07-12 | 2019-10-18 | 河南省明创环境科技有限公司 | The method repaired the medicament of chromium-polluted soil using Filling Principle and repair chromium-polluted soil using Filling Principle |
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Application publication date: 20180824 |