CN109504391A - A kind of copper polluted soil long-acting repair materials in situ - Google Patents
A kind of copper polluted soil long-acting repair materials in situ Download PDFInfo
- Publication number
- CN109504391A CN109504391A CN201811400479.2A CN201811400479A CN109504391A CN 109504391 A CN109504391 A CN 109504391A CN 201811400479 A CN201811400479 A CN 201811400479A CN 109504391 A CN109504391 A CN 109504391A
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- copper
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- polluted soil
- repair materials
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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
Abstract
The application provides a kind of copper polluted soil long-acting repair materials in situ, and the material of Cu-W ore deposit is repaired including three kinds；It is a kind of to be made of the matrix of absorbing copper；It is a kind of for will absorbing copper matrix with short-term degradable film coat get up particulate matter；It is a kind of for will absorbing copper the particulate matter that gets up of matrix long-term degradation film coated.Long-acting repair materials, the material without film package after application work copper polluted soil provided by the present application immediately in situ, and validity period was at 3-6 months；The material wrapped up through polyester film starts to degrade for 3-6 months in the soil, and material starts to work；The material that polyester film wraps up after coating starts to degrade for 12-18 months in the soil, and material starts to work, and generally realizes the long-acting of pollution control material.
Description
Technical field
The present invention relates to technical field of environmental management more particularly to a kind of copper polluted soil long-acting repair materials in situ.
Background technique
Soil is the valuable source of natural environment for the survival of mankind and agricultural production.Grain that the world faces, resource
Refer to pollution caused by heavy metal in soil excessive buildup with ambient soil heavy metal pollution.The heavy metal of contaminated soil includes life
Object toxicity significant element such as Cd, Pb, Hg, Cr, As, and have element such as Cu, Zn, Ni of certain toxicity.This kind of pollution range
Extensively, the duration is long, pollution is hidden, can not be biodegradable, and will lead to soil degradation, and Crop yield and quality declines, and
Pass through runoff, leaching loss contaminating action surface water and groundwater.Excessive heavy metal will generate adverse effect to physiological function of plants, make
Its trophic disturbance.Mercury, arsenic can inhibit nitrification in soil, amonifying bacteria activity, hinder Nitrogen supplying.Heavy metal can pass through food chain
It is enriched with and is generated the stronger methyl compound of toxicity, food chain biology is poisoned, finally in people's cylinder accumulation, endangers human health.
Problem is closely related with soil.While modern industrial or agricultural etc. is fast-developing, the situation of heavy metal pollution of soil is also increasingly tighter
It is high.
Summary of the invention
It is an object of the invention to solve the problems of the above-mentioned prior art, provide one kind can in soil Cu-W ore deposit into
The material of row long-acting reparation in situ.
A kind of copper polluted soil long-acting repair materials in situ, the material of Cu-W ore deposit is repaired including three kinds；One kind is by absorbing copper
Matrix constitute；It is a kind of for will absorbing copper matrix with short-term degradable film coat get up particulate matter；One kind is will
The particulate matter that the matrix long-term degradation film coated of enough absorbing coppers gets up.
Further, copper polluted soil as described above long-acting repair materials in situ, the matrix of the absorbing copper is by following
The raw material of mass parts is constituted:
Particle diameter is 5-10 parts of attapulgite of 0.01-0.02mm；
Particle diameter is 10-15 parts of diatomite of 1-2mm；
10-15 parts of citric acid
Particle diameter is 10-15 parts of sugarcane bagasse of 1-2mm
Particle diameter is 5-10 parts of calcium chloride of 0.2-0.5mm
Particle diameter is 5-8 parts of iron powder of 0.1-0.2mm
30-40 parts of microorganism bacteria residue；
The microorganism bacteria residue after trichoderma reesei, the filtering of aspergillus oryzae culture solution by being mixed to form.
Further, copper polluted soil as described above long-acting repair materials in situ, the trichoderma reesei and aspergillus oryzae
Ratio is 1:2.
Further, copper polluted soil as described above long-acting repair materials in situ, the matrix of the absorbing copper is by institute
State raw material after evenly mixing, the particle formed after high-pressure extrusion is granulated.
Further, copper polluted soil as described above long-acting repair materials in situ, the short-term degradable film is by thickness
It is constituted for the polyester film of 0.02-0.03mm.
Further, copper polluted soil as described above long-acting repair materials in situ, the long-term degradation film is by surface
It is coated with Nano-meter SiO_22, nano-TiO2Polyester film constitute；Coating thickness is 30-60 nanometers；The thickness 0.02- of polyester film
0.03mm。
Further, copper polluted soil as described above long-acting repair materials in situ, the Nano-meter SiO_22, nano-TiO2's
Mass ratio is 3:7；The Nano-meter SiO_22Nanometer particle size be 5-10；The nano-TiO2Nanometer particle size be 3-10.
Further, long-acting repair materials, the particle of three kinds of particles are 3- to copper polluted soil as described above in situ
4mm。
Further, copper polluted soil as described above long-acting repair materials in situ, the material matter of three kinds of reparation Cu-W ore deposits
Amount respectively accounts for 1/3.
The utility model has the advantages that
Copper polluted soil provided by the present application long-acting repair materials in situ, the material without film package after application is immediately
It works, validity period was at 3-6 months；The material wrapped up through polyester film starts to degrade for 3-6 months in the soil, and material is opened
Begin to work；The material that polyester film wraps up after coating starts to degrade for 12-18 months in the soil, and material starts to work,
Generally realize the long-acting of pollution control material.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, the technical solution below in the present invention carries out clear
Chu is fully described by, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In-situ immobilization of the repair materials provided by the invention mainly for copper polluted soil.
Copper polluted soil provided by the invention long-acting repair materials in situ, by the material structures of three kinds of different reparation Cu-W ore deposits
At；A kind of material is made of the matrix of absorbing copper；A kind of material be will the matrix of absorbing copper coated with short-term degradable film
The particulate matter to get up；Another material be will absorbing copper the particulate matter that gets up of matrix long-term degradation film coated；Institute
The time for stating short-term degradable film degradation is shorter than the degradation time of long-term degradation film；It is in short term and for a long time in contrast.It is right
Identical matrix can be used in the matrix of the material that these three repair Cu-W ore deposit, absorbing copper, different bases can also be used
Matter, as long as can be realized effective reparation to copper, within the scope of protection of this application, the present embodiment selection uses identical base
Matter.It is described below when using same matrix, the composition and preparation method of matrix:
The raw material material of matrix is prepared first, is formed as follows:
5-10 parts of attapulgite (particle diameter 0.01-0.02mm)
10-15 parts of diatomite (particle diameter 1-2mm)
10-15 parts of citric acid
10-15 parts of sugarcane bagasse (particle diameter 1-2mm)
5-10 parts of calcium chloride (particle diameter 0.2-0.5mm)
5-8 parts of iron powder (particle diameter 0.1-0.2mm)
30-40 parts of microorganism bacteria residue (is mixed to form, the ratio of 2 kinds of bacteria residues after trichoderma reesei, the filtering of aspergillus oryzae culture solution
For 1:2)
Preparation method: after evenly mixing, (compression ratio 20:1) forms diameter 3-4mm to the above material after high-pressure extrusion is granulated
The particle of left and right.
The attapulgite, diatomite to metallic copper have suction-operated, citric acid have complex copper ion, absorbing copper from
The effect of son, while pH value can also be regulated and controled, so that copper be enable preferably to be adsorbed or repair；Sugarcane bagasse can with copper from
Son combines and forms complex compound, and calcium chloride can speed up the reaction process of other raw materials and copper ion, and is easier and copper ion
Displacement reaction occurs, the copper ion after displacement is reacted more fast and efficiently is complexed with sucrose and is generated big
Molecular substance is effectively adsorbed by attapulgite, diatomite etc.；Equally, the oxide of iron powder occurs to replace and react with copper ion, from
And it can enable that the copper ion after reaction is more fast and efficiently complexed with sucrose and to generate macromolecular substances recessed
Convex stick stone, diatomite etc. effectively adsorb；Microorganism bacteria residue can reduce the toxicity of metallic copper, principle are as follows: microorganism is to a huge sum of money
The biological accumulation mechanism of category is mainly manifested in 3 kinds of extracellular complexing, extracellular precipitation and intracellular accumulation forms, microorganism
Adsorb heavy metal ion by electrically charged cell surface, or by absorb necessary nutrient active absorption heavy metal from
Son, or by absorbing necessary nutrient active absorption heavy metal ion.In conclusion the application is used with raw material proportioning
Matrix can well carry out tailing Cu-W ore deposit rainfall runoff former under the interaction and synergistic effect of each raw material
It collects and repairs in position.
Herein described copper polluted soil in situ long-acting repair materials the preparation method is as follows:
1/3 part of holding original state of host material of preparation is continued to employ, remaining 2/3 part forms 0.5mm-1mm or so through crushing
Grain, is then uniformly divided into 2 parts, 1 part of particle for being wrapped to form 3-4mm particle size with polyester film (thickness 0.02-0.03mm)；
1 part sprays (30-60 nanometers of coating thickness) Nano-meter SiO_2 with surface2(5-10 nanometer particle size, dosage 30%), nano-TiO2(3-3 receives
Grain of rice diameter, dosage 70%) polyester film (thickness 0.02-0.03mm) be wrapped to form the particle of 3-4mm particle size.
Three parts of materials are uniformly mixed, long-acting repair materials are obtained.
Uniformly be applied in when use polluted soil surface layer be uniformly mixed (dosage is in 100-200g/m2), interacting depth exists
5cm or so.
Material without film package after application works immediately, and validity period was at 3-6 months；The material wrapped up through polyester film
Material starts to degrade for 3-6 months in the soil, and material starts to work；The material that polyester film wraps up after coating, in soil
Start to degrade within middle 12-18 months, material starts to work.Generally the method achieve the long-acting of pollution control material.
Experimental example:
For the present invention will be further described, the following 5 groups of experiments of setting are shown in Table 1, but the present invention is not limited thereto.Experiment 1
[1] and [5] carries out according to the following steps, and [1], [2], [4], [5] are tested according to the following steps respectively for experiment 2 and experiment 4,
[1], [2], [3], [4], [5] are tested according to the following steps respectively for experiment 1 and experiment 3.
1 experimental design of table
Experimental method:
[1] contaminated soil that 10kg copper content is 20.0mg/kg is prepared, sealed bottom is placed in, back cut diameter 30cm is high
For in the flowerpot of 50cm.
[2] it is uniformly mixed after weighing the material of corrresponding quality according to upper table, after high-pressure extrusion is granulated (compression ratio 20:1)
Form the particle of diameter 4mm or so.
[3] 1/3 part of holding original state of host material prepared by above step is continued to employ, remaining 2/3 part forms through crushing
Then 0.5mm-1mm or so particle is uniformly divided into 2 parts, 1 part is wrapped to form 3-4mm with polyester film (thickness 0.02-0.03mm)
The particle of particle size；1 part with the Nano-meter SiO_2 by 30%2(5-10 nanometer particle size) and 70% nano-TiO2(3-10 nanoparticle
Diameter) mixture spraying (40 nanometers of coating thickness) polyester film (thickness 0.02-0.03mm) be wrapped to form 3-4mm particle size
Particle, this three points of base-materials are mixed to form long-acting repair materials again.
[4] obtained material is imposed on respectively in the about 10cm soil of flowerpot middle and upper part surface layer, and it is mixed with soil
It is even.
[5] flowerpot is disposed within, it takes its section soil within every 3 months, is uniformly mixed, an extraction method measurement is respectively adopted
The copper of corresponding soil available.
Experimental result is shown in the following table 2
2 experimental result of table
By table 1, table 2 as can be seen that the copper polluted soil in-situ remediation material reparation constituted using inventive formulation is had
Time limit longest is imitated, and finally to the removal efficiency highest of copper, therefore when administering Cu Pollution in Soil, is only needed in 1 year
The copper polluted soil in-situ remediation material constituted using an inventive formulation can reach repairing effect, largely save
Manpower and material resources are saved.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of copper polluted soil long-acting repair materials in situ, which is characterized in that repair the material of Cu-W ore deposit including three kinds；It is a kind of
It is made of the matrix of absorbing copper；It is a kind of for will absorbing copper matrix with short-term degradable film coat get up particulate matter；One
Kind for will absorbing copper the particulate matter that gets up of matrix long-term degradation film coated.
2. copper polluted soil according to claim 1 long-acting repair materials in situ, which is characterized in that the base of the absorbing copper
Matter is made of the raw material of following mass parts:
Particle diameter is 5-10 parts of attapulgite of 0.01-0.02mm；
Particle diameter is 10-15 parts of diatomite of 1-2mm；
10-15 parts of citric acid
Particle diameter is 10-15 parts of sugarcane bagasse of 1-2mm
Particle diameter is 5-10 parts of calcium chloride of 0.2-0.5mm
Particle diameter is 5-8 parts of iron powder of 0.1-0.2mm
30-40 parts of microorganism bacteria residue；
The microorganism bacteria residue after trichoderma reesei, the filtering of aspergillus oryzae culture solution by being mixed to form.
3. copper polluted soil according to claim 2 long-acting repair materials in situ, which is characterized in that the trichoderma reesei with
The ratio of aspergillus oryzae is 1:2.
4. copper polluted soil according to claim 2 long-acting repair materials in situ, which is characterized in that the base of the absorbing copper
Matter be by the raw material after evenly mixing, the particle formed after high-pressure extrusion is granulated.
5. copper polluted soil according to claim 1 long-acting repair materials in situ, which is characterized in that it is described degrade in short term it is thin
Film with a thickness of the polyester film of 0.02-0.03mm by constituting.
6. copper polluted soil according to claim 1 long-acting repair materials in situ, which is characterized in that the long-term degradation is thin
Film is coated with Nano-meter SiO_2 by surface2, nano-TiO2Polyester film constitute；Coating thickness is 30-60 nanometers；The thickness of polyester film
Spend 0.02-0.03mm.
7. copper polluted soil according to claim 6 long-acting repair materials in situ, which is characterized in that the Nano-meter SiO_22, receive
Rice TiO2Mass ratio be 3:7；The Nano-meter SiO_22Nanometer particle size be 5-10；The nano-TiO2Nanometer particle size be 3-10.
8. copper polluted soil according to claim 4 long-acting repair materials in situ, which is characterized in that the particle of three kinds of particles
It is 3-4mm.
9. copper polluted soil according to claim 1 long-acting repair materials in situ, which is characterized in that three kinds of reparation Cu-W ore deposits
Quality of materials respectively account for 1/3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811400479.2A CN109504391B (en) | 2018-11-22 | 2018-11-22 | In-situ long-acting repair material for copper-polluted soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811400479.2A CN109504391B (en) | 2018-11-22 | 2018-11-22 | In-situ long-acting repair material for copper-polluted soil |
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| CN109504391A true CN109504391A (en) | 2019-03-22 |
| CN109504391B CN109504391B (en) | 2021-02-23 |
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Cited By (1)
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| CN110776919A (en) * | 2019-11-11 | 2020-02-11 | 江西普瑞丰生态科技有限公司 | Stabilizing material for heavy metal soil remediation and preparation method thereof |
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| CN109504391B (en) | 2021-02-23 |
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