CN106701087A - Cobalt polluted soil improver and preparation method thereof - Google Patents
Cobalt polluted soil improver and preparation method thereof Download PDFInfo
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- CN106701087A CN106701087A CN201611222630.9A CN201611222630A CN106701087A CN 106701087 A CN106701087 A CN 106701087A CN 201611222630 A CN201611222630 A CN 201611222630A CN 106701087 A CN106701087 A CN 106701087A
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- cobalt
- ground pumice
- ferrous sulfide
- volcanic glass
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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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/06—Calcium compounds, e.g. lime
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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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a cobalt polluted soil improver and a preparation method thereof. The improver is prepared from the following raw materials in parts by mass: 24-28 parts of modified ground pumice, 16-19 parts of ferrous sulfide, 9-12 parts of calcium superphosphate and 7-11 parts of volcanic glass, wherein the modified ground pumice is formed by carrying out micro-crushing treatment on ground pumice, adding nitric acid and carrying out stirring treatment, filtering, washing, drying, adding sodium tartrate and mixing, carrying out heat ultrasonic treatment, filtering, washing, drying, grinding and sieving, crushing all the raw materials, filtering, mixing and uniformly mixing. According to the improver disclosed by the invention, the content of cobalt in heavy metal cobalt polluted soil can be remarkably reduced; and when the improver is applied to improvement of soil with the cobalt content of 238.4mg/kg, the removal rate of the cobalt is 85.5%-96.3% and a secondary pollution problem is not caused.
Description
Technical field
The present invention relates to technical field of soil remediation, specifically a kind of cobalt pollution soil conditioner and preparation method thereof.
Background technology
With developing rapidly for global economy, problem of environmental pollution is also increasingly aggravated, wherein, the heavy metal pollution in soil
Receive much concern.Heavy metal is highly enriched in soil, is degrading soil environment quality, not only threatens the yield and product of crops
Matter, also jeopardizes the ecological circulation of soil.People is in the superlative degree of food chain, on the one hand, be planted in the soil of heavy metal pollution
On crops heavy metal therein is absorbed after, then by food chain transport to animal and human body, so as to animal
Health with human body causes harm.Additionally, heavy metal pollution also seriously threatens the living environment of the mankind.
In each heavy metal species, the cobalt of high concentration can substantially suppress growing for plant, therefore, COBALT IN SOIL BY pollution is got over
To be more subject to people widely to pay close attention to, cobalt content agricultural product high can also damage the health of humans and animals, cause cardiac muscle and pancreas
Damage, reduce ability of thyroid gland concentration iodine etc..
At present, the improvement recovery technique of cobalt pollution soil is divided into stable curing method, physics and biological prosthetic 3 kinds of methods.Surely
It is by heavy metal stabilization agent is targetedly added in soil, using the absorption of stabilization agent heavy metal, oxidation to determine solidification method
Reduction, antagonism or precipitation, reduce the biological effectiveness of heavy metal, make heavy metal particles mineralising, lose and extraneous reaction
Condition, so as to reduce heavy metal-polluted soil concentration.This method carries out in-situ immobilization to soil, has saved trucking expenses and storage location expense
With；Environmental pollution is small, can be reduced to minimum degree to environmental disruption, is to eliminate heavy metal danger in heavy metal pollution of soil at present
Harmful effective ways.But existing stabilization agent generally existing treatment effeciency is undesirable, easily cause secondary pollution to soil
Problem.
The content of the invention
It is an object of the invention to provide a kind for the treatment of effect is good, non-secondary pollution cobalt pollution soil conditioner and its system
Preparation Method.
To achieve the above object, the present invention provides following technical scheme：
A kind of cobalt pollution soil conditioner, according to mass fraction meter, is made up of following raw material：Modified 24-28 parts of ground pumice,
Ferrous sulfide 16-19 parts, calcium superphosphate 9-12 parts, 7-11 parts of volcanic glass rock；The modification procedure of described modified ground pumice is such as
Under：Float stone is taken, is the 12-15 μm of ground pumice of granularity through ultramicro grinding；Ground pumice is added 2.4-2.6 times of its quality of quality
During concentration is 48% salpeter solution, with the speed stir process 30-40min of 60-70r/min, filtering, washing to neutrality is dried
It is dry；It is again that 16% EWNN solution mixes with 0.42-0.45 times of ground pumice quality mass concentration measured, is heated to 56-
58 DEG C, with power as 300-320W, ultrasonication 15-20min of the frequency as 27-28kHz, filtering, washing is dried, grinding,
250-300 mesh sieves are crossed, modified ground pumice is obtained.
As further scheme of the invention：According to mass fraction meter, it is made up of following raw material：Modified ground pumice 25-26
Part, ferrous sulfide 17-18 parts, calcium superphosphate 10-12 parts, 8-10 parts of volcanic glass rock.
As further scheme of the invention：According to mass fraction meter, it is made up of following raw material：Modified 26 parts of ground pumice,
17 parts of ferrous sulfide, 11 parts of calcium superphosphate, 9 parts of volcanic glass rock.
The preparation method of described cobalt pollution soil conditioner, comprises the following steps：Respectively by ferrous sulfide, calcium superphosphate
It is broken with volcanic glass rock dust, 120-180 mesh sieves are crossed, obtain ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust；In proportion
Modified ground pumice, ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust are mixed, is stirred, obtained.
Application of the described cobalt pollution soil conditioner in terms of heavy metal cobalt pollution soil renovation agent is prepared.
Compared with prior art, the beneficial effects of the invention are as follows：The present invention is from ground pumice, ferrous sulfide, calcium superphosphate
It is raw material with volcanic glass rock, is modified by ground pumice, then a kind of compound improvement is mixed to prepare with its excess-three kind component
Agent, the modifying agent can significantly reduce the content of heavy metal cobalt pollution COBALT IN SOIL BY, be 238.4mg/kg's when cobalt content is applied to
During soil improvement, the modifying agent is 85.5-96.3% to the clearance of cobalt, greatly reduces amount containing cobalt in soil；By being adopted
Raw material is pure natural, and the use of the modifying agent will not threaten to the ecological circulation of soil, i.e., in the absence of secondary
The problem of pollution.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of protection of the invention.
Embodiment 1
In the embodiment of the present invention, a kind of cobalt pollution soil conditioner, according to mass fraction meter, is made up of following raw material：Change
24 parts of ground pumice of property, 16 parts of ferrous sulfide, 12 parts of calcium superphosphate, 11 parts of volcanic glass rock；Wherein, the modified step of modified ground pumice
It is rapid as follows：Float stone is taken, is 12 μm of ground pumices of granularity through ultramicro grinding；Ground pumice is added 2.4 times of its quality of quality dense
Spend in the salpeter solution for 48%, with the speed stir process 40min of 60r/min, filtering, washing to neutrality, drying；Again with it is floating
The mass concentration of 0.42 times of amount of stone flour quality is 16% EWNN solution mixing, is heated to 56 DEG C, with power as 300W,
Frequency is the ultrasonication 20min of 27kHz, and filtering, washing is dried, and 250 mesh sieves are crossed in grinding, obtain modified ground pumice.
The preparation method of described cobalt pollution soil conditioner, comprises the following steps：Respectively by ferrous sulfide, calcium superphosphate
It is broken with volcanic glass rock dust, 120 mesh sieves are crossed, obtain ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust；To change in proportion
Property ground pumice, ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust mixing, stir, obtain.
Embodiment 2
In the embodiment of the present invention, a kind of cobalt pollution soil conditioner, according to mass fraction meter, is made up of following raw material：Change
28 parts of ground pumice of property, 19 parts of ferrous sulfide, 9 parts of calcium superphosphate, 7 parts of volcanic glass rock；Wherein, the modification procedure of modified ground pumice
It is as follows：Float stone is taken, is 15 μm of ground pumices of granularity through ultramicro grinding；Ground pumice is added 2.6 times of its quality of mass concentration
In for 48% salpeter solution, with the speed stir process 30min of 70r/min, filtering, washing to neutrality, drying；Again with float stone
The mass concentration of 0.45 times of silty amount amount is 16% EWNN solution mixing, is heated to 58 DEG C, with power as 320W, frequency
Rate is the ultrasonication 15min of 28kHz, and filtering, washing is dried, and 300 mesh sieves are crossed in grinding, obtain modified ground pumice.
The preparation method of described cobalt pollution soil conditioner, comprises the following steps：Respectively by ferrous sulfide, calcium superphosphate
It is broken with volcanic glass rock dust, 180 mesh sieves are crossed, obtain ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust；To change in proportion
Property ground pumice, ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust mixing, stir, obtain.
Embodiment 3
In the embodiment of the present invention, a kind of cobalt pollution soil conditioner, according to mass fraction meter, is made up of following raw material：Change
25 parts of ground pumice of property, 17 parts of ferrous sulfide, 12 parts of calcium superphosphate, 10 parts of volcanic glass rock；Wherein, the modified step of modified ground pumice
It is rapid as follows：Float stone is taken, is 12 μm of ground pumices of granularity through ultramicro grinding；Ground pumice is added 2.6 times of its quality of quality dense
Spend in the salpeter solution for 48%, with the speed stir process 40min of 60r/min, filtering, washing to neutrality, drying；Again with it is floating
The mass concentration of 0.42 times of amount of stone flour quality is 16% EWNN solution mixing, is heated to 58 DEG C, with power as 300W,
Frequency is the ultrasonication 15min of 28kHz, and filtering, washing is dried, and 300 mesh sieves are crossed in grinding, obtain modified ground pumice.
The preparation method of described cobalt pollution soil conditioner, comprises the following steps：Respectively by ferrous sulfide, calcium superphosphate
It is broken with volcanic glass rock dust, 120 mesh sieves are crossed, obtain ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust；To change in proportion
Property ground pumice, ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust mixing, stir, obtain.
Embodiment 4
In the embodiment of the present invention, a kind of cobalt pollution soil conditioner, according to mass fraction meter, is made up of following raw material：Change
26 parts of ground pumice of property, 18 parts of ferrous sulfide, 10 parts of calcium superphosphate, 8 parts of volcanic glass rock；Wherein, the modified step of modified ground pumice
It is rapid as follows：Float stone is taken, is 15 μm of ground pumices of granularity through ultramicro grinding；Ground pumice is added 2.4 times of its quality of quality dense
Spend in the salpeter solution for 48%, with the speed stir process 30min of 70r/min, filtering, washing to neutrality, drying；Again with it is floating
The mass concentration of 0.45 times of amount of stone flour quality is 16% EWNN solution mixing, is heated to 56 DEG C, with power as 320W,
Frequency is the ultrasonication 20min of 27kHz, and filtering, washing is dried, and 250 mesh sieves are crossed in grinding, obtain modified ground pumice.
The preparation method of described cobalt pollution soil conditioner, comprises the following steps：Respectively by ferrous sulfide, calcium superphosphate
It is broken with volcanic glass rock dust, 180 mesh sieves are crossed, obtain ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust；To change in proportion
Property ground pumice, ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust mixing, stir, obtain.
Embodiment 5
In the embodiment of the present invention, a kind of cobalt pollution soil conditioner, according to mass fraction meter, is made up of following raw material：Change
26 parts of ground pumice of property, 17 parts of ferrous sulfide, 11 parts of calcium superphosphate, 9 parts of volcanic glass rock；Wherein, the modified step of modified ground pumice
It is rapid as follows：Float stone is taken, is 15 μm of ground pumices of granularity through ultramicro grinding；Ground pumice is added 2.5 times of its quality of quality dense
Spend in the salpeter solution for 48%, with the speed stir process 35min of 65r/min, filtering, washing to neutrality, drying；Again with it is floating
The mass concentration of 0.44 times of amount of stone flour quality is 16% EWNN solution mixing, is heated to 57 DEG C, with power as 310W,
Frequency is the ultrasonication 18min of 28kHz, and filtering, washing is dried, and 300 mesh sieves are crossed in grinding, obtain modified ground pumice.
The preparation method of described cobalt pollution soil conditioner, comprises the following steps：Respectively by ferrous sulfide, calcium superphosphate
It is broken with volcanic glass rock dust, 150 mesh sieves are crossed, obtain ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust；To change in proportion
Property ground pumice, ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust mixing, stir, obtain.
Comparative example 1
On the basis of embodiment 5, with common ground pumice substituting modification ground pumice, remaining is identical with embodiment 5.
Comparative example 2
On the basis of embodiment 5, modified this component of ground pumice is deleted, remaining is identical with embodiment 5.
Comparative example 3
On the basis of embodiment 5, volcanic glass rock this component is deleted, remaining is identical with embodiment 5.
The soil of a certain severe cobalt pollution is chosen as experiment soil sample, by test, the amount containing cobalt of the soil is
248.4mg/kg.According to modifying agent：The mass ratio of water is 1：10 ratio, first respectively by embodiment 1-5 and comparative example 1-3 systems
The modifying agent for obtaining is mixed with water and obtains mixed solution；Mixed solution is then equably sprayed onto corresponding high concentration respectively
Cobalt pollution soil in, the fountain height of mixed solution is 100g/m2, soil is turned over after sprinkling.After 3 days, test improvement
The amount containing cobalt of soil afterwards, measures result as shown in table 1.
The situation of change of amount containing cobalt of the soil after the improvement of table 1
As can be seen from Table 1：Modifying agent obtained in embodiment 1-5 is substantially excellent to the removal effect of the heavy metal cobalt in soil
In comparative example 1-3, wherein, the improved effect of embodiment 5 is optimal, and the clearance containing cobalt amount is 96.3%；Comparative example 5 and right
Ratio 1-3, it is known that modifying agent of the present invention be by be modified ground pumice, volcanic glass rock and ferrous sulfide, calcium superphosphate it is common
Effect, the such significant cobalt pollution improved effect just having.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be in other specific forms realized.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires to be limited rather than described above, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined
May be appreciated other embodiment.
Claims (5)
1. a kind of cobalt pollution soil conditioner, it is characterised in that according to mass fraction meter, be made up of following raw material：Modified float stone
Powder 24-28 parts, ferrous sulfide 16-19 parts, calcium superphosphate 9-12 parts, 7-11 parts of volcanic glass rock；Described modified ground pumice
Modification procedure is as follows：Float stone is taken, is the 12-15 μm of ground pumice of granularity through ultramicro grinding；Ground pumice is added the 2.4- of its quality
During 2.6 times of mass concentration is 48% salpeter solution, with the speed stir process 30-40min of 60-70r/min, filtering is washed
Wash to neutrality, drying；It is again that 16% EWNN solution is mixed with 0.42-0.45 times of ground pumice quality mass concentration measured
Close, be heated to 56-58 DEG C, with power as 300-320W, ultrasonication 15-20min of the frequency as 27-28kHz, filtering is washed
Wash, dry, 250-300 mesh sieves are crossed in grinding, obtain modified ground pumice.
2. cobalt pollution soil conditioner according to claim 1, it is characterised in that according to mass fraction meter, by following original
Material is made：Modified 25-26 parts of ground pumice, ferrous sulfide 17-18 parts, calcium superphosphate 10-12 parts, 8-10 parts of volcanic glass rock.
3. cobalt pollution soil conditioner according to claim 1, it is characterised in that according to mass fraction meter, by following original
Material is made：Modified 26 parts of ground pumice, 17 parts of ferrous sulfide, 11 parts of calcium superphosphate, 9 parts of volcanic glass rock.
4. according to the preparation method of any described cobalt pollution soil conditioners of claim 1-3, it is characterised in that including following
Step：It is respectively that ferrous sulfide, calcium superphosphate and volcanic glass rock dust is broken, 120-180 mesh sieves are crossed, obtain ferrous sulfide powder, mistake
Phosphoric acid calcium powder and volcanic glass rock dust；In proportion by modified ground pumice, ferrous sulfide powder, peroxophosphoric acid calcium powder and volcanic glass rock dust
Mixing, stirs, and obtains.
5. heavy metal cobalt pollution soil renovation agent is being prepared according to any described cobalt pollution soil conditioners of claim 1-3
The application of aspect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611222630.9A CN106701087A (en) | 2016-12-27 | 2016-12-27 | Cobalt polluted soil improver and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611222630.9A CN106701087A (en) | 2016-12-27 | 2016-12-27 | Cobalt polluted soil improver and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106701087A true CN106701087A (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611222630.9A Withdrawn CN106701087A (en) | 2016-12-27 | 2016-12-27 | Cobalt polluted soil improver and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818067A (en) * | 2010-04-16 | 2010-09-01 | 石河子大学 | Biological carbon soil conditioner and preparation method thereof |
| 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 |
| CN103484128A (en) * | 2013-08-29 | 2014-01-01 | 南京农业大学 | Saline-alkali soil conditioner, and preparation method and application thereof |
-
2016
- 2016-12-27 CN CN201611222630.9A patent/CN106701087A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818067A (en) * | 2010-04-16 | 2010-09-01 | 石河子大学 | Biological carbon soil conditioner and preparation method thereof |
| 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 |
| CN103484128A (en) * | 2013-08-29 | 2014-01-01 | 南京农业大学 | Saline-alkali soil conditioner, and preparation method and application thereof |
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Application publication date: 20170524 |