CN106381151A - Mercury polluted soil repairing agent and preparation method thereof - Google Patents
Mercury polluted soil repairing agent and preparation method thereof Download PDFInfo
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- CN106381151A CN106381151A CN201610722577.2A CN201610722577A CN106381151A CN 106381151 A CN106381151 A CN 106381151A CN 201610722577 A CN201610722577 A CN 201610722577A CN 106381151 A CN106381151 A CN 106381151A
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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)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a mercury polluted soil repairing agent and a preparation method thereof. The mercury polluted soil repairing agent comprises the following main raw materials by weight: 26-34 parts of pond silt, 18-25 parts of bamboo charcoal, 15-22 parts of chitosan, 15-30 parts of wormcast, 6-12 parts of polyacrylamide, and 0.1-0.5 part of sulfur powder. After application of the prepared soil repairing agent to repair treatment, the mercury concentration of the soil is decreased to less than 0.30mg/kg, and the mercury concentration of the repaired soil meets the requirements of national second level soil quality standards. Therefore, the mercury polluted soil repairing agent has very good economic benefits and extensive social benefits.
Description
Technical field
The present invention relates to a kind of technical field of soil remediation, specifically a kind of mercury contaminated soil renovation agent and its preparation side
Method.
Background technology
Heavy metal pollution of soil refers to due to mankind's activity, and content in soil for the minor metallic element in soil exceedes
Background value, excess deposition and the too high levels that cause, it is referred to as heavy metal pollution of soil.And farmland soil heavy metals pollution have huge
Big harmfulness, heavy metal in soil pollution not only can lead to crop production reduction and quality decline, also can pass through soil-plant
System, enters people's human body through food chain, is detrimental to health and life security.Heavy metal pollution of soil have disguise, harm delayed
Property, the biological concentration of chronicity and biological chain heavy metal the features such as, if these decide recognizing to heavy metal pollution of soil
Delayed will bring the serious consequence being difficult to expect with administering.Heavy metal pollution has been in the gesture being on the rise, to ecological environment and people
The maximum heavy metal of body health effect mainly has Hg, Cd, Pb and As etc., from the beginning of the sixties, the Minamata being caused by Methylmercury pollution Riverfish
Disease gives people the disaster that class is brought, and worldwide causes the attention to mercury pollution for the people, and the research of mercury pollution is increasing.
Originally only pay attention to the research to water body mercury, though and the behavior of mercury in soils has research, work is less.In recent years, due to sending out
In existing remote lake, the mercury content of fish raises and is caused through long range propagation and sedimentation by Mercury In The Air, the biology of Mercury In The Air and mercury
Geochemical cycle research is just increasingly becoming one of focus of mercury pollution research.Mercury In The Air can enter bury by dried wet deposition
Earth, through complicated physics, chemical reaction, major part is stranded in soil the mercury in soil with various forms, is partly inhaled by plant
Receive, sub-fraction is discharged into the atmosphere under certain condition in the form of gaseous mercury it is seen that soil is the remittance of mercury, is mercury again
Source, the therefore improvement to mercury contaminated soil and reparation, are very urgent tasks.
Content of the invention
It is an object of the invention to provide a kind of mercury contaminated soil renovation agent and preparation method thereof, to solve above-mentioned background skill
The problem proposing in art.
For achieving the above object, the present invention provides following technical scheme：
A kind of mercury contaminated soil renovation agent, the primary raw material according to weight portion is：Pond Silt 26-34 part, bamboo charcoal 18-25 part,
Shitosan 15-22 part, wormcast 15-30 part, polyacrylamide 6-12 part, Cosan 0.1-0.5 part.
As the further scheme of the present invention：Described mercury contaminated soil renovation agent, the primary raw material according to weight portion is：Pond
Pool mud 28-32 part, bamboo charcoal 20-23 part, shitosan 17-20 part, wormcast 18-27 part, polyacrylamide 8-10 part, Cosan
0.2-0.4 part.
As the further scheme of the present invention：Described mercury contaminated soil renovation agent, the primary raw material according to weight portion is：Pond
30 parts of pool mud, 22 parts of bamboo charcoal, 19 parts of shitosan, 23 parts of wormcast, 9 parts of polyacrylamide, 0.3 part of Cosan.
As the further scheme of the present invention：The particle diameter of described bamboo charcoal is 50-200 μm.
As the further scheme of the present invention：The particle diameter of described Cosan is 500-800 μm.
The preparation method of described mercury contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in Pond Silt and obtain mixture slurry so as to moisture content is 15%-20%, be subsequently crushed to 5mm
The particle of diameter；
（2）Then, particle is mixed with shitosan, wormcast, after piling up 24h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 30 DEG C -42 DEG C, and the time is 1-2h, obtains
Mixtures II；
（4）Then, mixtures II and bamboo charcoal, polyacrylamide, Cosan are carried out high-pressure homogeneous process, mixed at 35-40 DEG C
Close 5-10 minute, pressure is 15-20MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product mercury contaminated soil renovation agent.
As the further scheme of the present invention：Step（1）The moisture content of middle mixture slurry is 18%.
As the further scheme of the present invention：Step（3）The temperature of middle ultrasonication is 36 DEG C, and the time is 1.5h.
As the further scheme of the present invention：Step（4）In at 38 DEG C mix 8 minutes, pressure be 18MPa.
Compared with prior art, the invention has the beneficial effects as follows：
After soil-repairing agent prepared by the present invention carries out repair process, the mercury concentration in contaminated soil drops to 0.30mg/kg
Hereinafter, after reparation, the mercury concentration of soil meets the requirement of national second grade soil quality standard, has good economic benefit and wide
General social benefit.
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 present 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 not making creative work, all
Belong to the scope of protection of the invention.
Embodiment 1
A kind of mercury contaminated soil renovation agent, the primary raw material according to weight portion is：26 parts of Pond Silt, 18 parts of bamboo charcoal, shitosan
15 parts, 15 parts of wormcast, 6 parts of polyacrylamide, 0.1 part of Cosan；The particle diameter of described bamboo charcoal is 50 μm；The grain of described Cosan
Footpath is 500 μm.
The preparation method of described mercury contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in Pond Silt and obtain mixture slurry so as to moisture content is 15%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with shitosan, wormcast, after piling up 24h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 30 DEG C, and the time is 1h, obtains mixture
II；
（4）Then, mixtures II and bamboo charcoal, polyacrylamide, Cosan are carried out high-pressure homogeneous process, mix 5 at 35 DEG C
Minute, pressure is 15MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product mercury contaminated soil renovation agent.
Embodiment 2
A kind of mercury contaminated soil renovation agent, the primary raw material according to weight portion is：28 parts of Pond Silt, 20 parts of bamboo charcoal, shitosan
17 parts, 18 parts of wormcast, 8 parts of polyacrylamide, 0.2 part of Cosan；The particle diameter of described bamboo charcoal is 500 μm；Described Cosan
Particle diameter is 500 μm.
The preparation method of described mercury contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in Pond Silt and obtain mixture slurry so as to moisture content is 15%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with shitosan, wormcast, after piling up 24h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 30 DEG C, and the time is 1h, obtains mixture
II；
（4）Then, mixtures II and bamboo charcoal, polyacrylamide, Cosan are carried out high-pressure homogeneous process, mix 5 at 35 DEG C
Minute, pressure is 15MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product mercury contaminated soil renovation agent.
Embodiment 3
A kind of mercury contaminated soil renovation agent, the primary raw material according to weight portion is：30 parts of Pond Silt, 22 parts of bamboo charcoal, shitosan
19 parts, 23 parts of wormcast, 9 parts of polyacrylamide, 0.3 part of Cosan；The particle diameter of described bamboo charcoal is 125 μm；Described Cosan
Particle diameter is 650 μm.
The preparation method of described mercury contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in Pond Silt and obtain mixture slurry so as to moisture content is 18%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with shitosan, wormcast, after piling up 24h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 36 DEG C, and the time is 1.5h, is mixed
Thing II；
（4）Then, mixtures II and bamboo charcoal, polyacrylamide, Cosan are carried out high-pressure homogeneous process, mix 8 at 38 DEG C
Minute, pressure is 18MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product mercury contaminated soil renovation agent.
Embodiment 4
A kind of mercury contaminated soil renovation agent, the primary raw material according to weight portion is：32 parts of Pond Silt, 23 parts of bamboo charcoal, shitosan
20 parts, 27 parts of wormcast, 10 parts of polyacrylamide, 0.4 part of Cosan；The particle diameter of described bamboo charcoal is 200 μm；Described Cosan
Particle diameter is 800 μm.
The preparation method of described mercury contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in Pond Silt and obtain mixture slurry so as to moisture content is 20%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with shitosan, wormcast, after piling up 24h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 42 DEG C, and the time is 2h, obtains mixture
II；
（4）Then, mixtures II and bamboo charcoal, polyacrylamide, Cosan are carried out high-pressure homogeneous process, mix 10 at 40 DEG C
Minute, pressure is 20MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product mercury contaminated soil renovation agent.
Embodiment 5
A kind of mercury contaminated soil renovation agent, the primary raw material according to weight portion is：34 parts of Pond Silt, 25 parts of bamboo charcoal, shitosan
22 parts, 30 parts of wormcast, 12 parts of polyacrylamide, 0.5 part of Cosan；The particle diameter of described bamboo charcoal is 200 μm；Described Cosan
Particle diameter is 800 μm.
The preparation method of described mercury contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in Pond Silt and obtain mixture slurry so as to moisture content is 20%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with shitosan, wormcast, after piling up 24h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 42 DEG C, and the time is 2h, obtains mixture
II；
（4）Then, mixtures II and bamboo charcoal, polyacrylamide, Cosan are carried out high-pressure homogeneous process, mix 10 at 40 DEG C
Minute, pressure is 20MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product mercury contaminated soil renovation agent.
Comparative example 1
A kind of mercury contaminated soil renovation agent, the primary raw material according to weight portion is：30 parts of Pond Silt, 22 parts of bamboo charcoal, polypropylene
9 parts of acid amides；The particle diameter of described bamboo charcoal is 125 μm.
The preparation method of described mercury contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in Pond Silt and obtain mixture slurry so as to moisture content is 18%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, obtain mixture I by after particle packing 24h；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 36 DEG C, and the time is 1.5h, is mixed
Thing II；
（4）Then, mixtures II and bamboo charcoal, polyacrylamide are carried out high-pressure homogeneous process, mix 8 minutes at 38 DEG C, pressure
It is by force 18MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product mercury contaminated soil renovation agent.
Comparative example 2
A kind of mercury contaminated soil renovation agent, the primary raw material according to weight portion is：30 parts of Pond Silt.
The preparation method of described mercury contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in Pond Silt and obtain mixture slurry so as to moisture content is 18%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, obtain mercury contaminated soil renovation agent by after particle packing 24h.
Comparative example 3
A kind of mercury contaminated soil renovation agent, the primary raw material according to weight portion is：30 parts of Pond Silt, 22 parts of bamboo charcoal, shitosan
19 parts, 23 parts of wormcast, 9 parts of polyacrylamide, 0.3 part of Cosan；The particle diameter of described bamboo charcoal is 125 μm；Described Cosan
Particle diameter is 650 μm.
The preparation method of described mercury contaminated soil renovation agent, concretely comprises the following steps：
（1）First, add water in Pond Silt and obtain mixture slurry so as to moisture content is 18%, be subsequently crushed to 5mm diameter
Particle；
（2）Then, particle is mixed with shitosan, wormcast, after piling up 24h, obtain mixture I；
（3）Then, mixture I is carried out high-pressure homogeneous process with bamboo charcoal, polyacrylamide, Cosan, at 38 DEG C, mix 8 points
Clock, pressure is 18MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures II；
（4）Finally, mixtures II is carried out microencapsulation packaging, obtain final product mercury contaminated soil renovation agent.
Test experience
Excavated to polluting soil to be repaired using excavator, by the mercury in above-described embodiment 1-5 and comparative example 1-3
After contaminated soil remediation agent is added on the renovation agent of surface applying 2cm thickness of contaminated soil, by polluted soil top layer
The thick soil of 20cm is mixed by way of turning over the renovation agent applying, and after 10 days, carries out sampling monitoring, test knot
Fruit such as table 1
.
As can be seen here, the mercury contaminated soil renovation agent prepared in the embodiment of the present invention, has more preferable showing with contrast groups example ratio
Write treatment effect, the present invention can make the physical and chemical index by mercury severe contamination soil reach GB15618-1995 standard；Place's science and engineering
Skill is simple, and dosage is few, and treatment effect is good, stable performance, and contaminated soil restoration degree is high, can significantly reduce mercury
The cost that contaminated soil is processed, has good economic benefit and extensive social benefit.
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 the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.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 rather than described above limits, 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 this specification is been described by according to embodiment, not each embodiment only wraps
Containing an independent technical scheme, only for clarity, those skilled in the art should for this narrating mode of specification
Using specification as an entirety, the technical scheme in each embodiment can also form those skilled in the art through appropriately combined
Understandable other embodiment.
Claims (9)
1. a kind of mercury contaminated soil renovation agent is it is characterised in that the primary raw material according to weight portion is：Pond Silt 26-34 part,
Bamboo charcoal 18-25 part, shitosan 15-22 part, wormcast 15-30 part, polyacrylamide 6-12 part, Cosan 0.1-0.5 part.
2. mercury contaminated soil renovation agent according to claim 1, it is characterised in that described mercury contaminated soil renovation agent, is pressed
Primary raw material according to weight portion is：Pond Silt 28-32 part, bamboo charcoal 20-23 part, shitosan 17-20 part, wormcast 18-27 part,
Polyacrylamide 8-10 part, Cosan 0.2-0.4 part.
3. mercury contaminated soil renovation agent according to claim 1 and 2 is it is characterised in that described mercury contaminated soil renovation agent,
Primary raw material according to weight portion is：30 parts of Pond Silt, 22 parts of bamboo charcoal, 19 parts of shitosan, 23 parts of wormcast, polyacrylamide
9 parts, 0.3 part of Cosan.
4. mercury contaminated soil renovation agent according to claim 3 is it is characterised in that the particle diameter of described bamboo charcoal is 50-200 μ
m.
5. mercury contaminated soil renovation agent according to claim 3 is it is characterised in that the particle diameter of described Cosan is 500-
800μm.
6. a kind of preparation method of described mercury contaminated soil renovation agent as arbitrary in claim 1-5 is it is characterised in that concrete walk
Suddenly it is：
（1）First, add water in Pond Silt and obtain mixture slurry so as to moisture content is 15%-20%, be subsequently crushed to 5mm
The particle of diameter；
（2）Then, particle is mixed with shitosan, wormcast, after piling up 24h, obtain mixture I；
（3）Secondly, mixture I carries out ultrasonication, and the temperature of ultrasonication is 30 DEG C -42 DEG C, and the time is 1-2h, obtains
Mixtures II；
（4）Then, mixtures II and bamboo charcoal, polyacrylamide, Cosan are carried out high-pressure homogeneous process, mixed at 35-40 DEG C
Close 5-10 minute, pressure is 15-20MPa；Low temperature drying at a temperature of being subsequently placed at 8 DEG C, obtains mixtures III；
（5）Finally, mixtures III is carried out microencapsulation packaging, obtain final product mercury contaminated soil renovation agent.
7. the preparation method of mercury contaminated soil renovation agent according to claim 6 is it is characterised in that step（1）Middle mixing
The moisture content of slurry is 18%.
8. the preparation method of mercury contaminated soil renovation agent according to claim 6 is it is characterised in that step（3）In ultrasonic
The temperature that ripple is processed is 36 DEG C, and the time is 1.5h.
9. the preparation method of mercury contaminated soil renovation agent according to claim 6 is it is characterised in that step（4）In 38
Mix 8 minutes at DEG C, pressure is 18MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722577.2A CN106381151A (en) | 2016-08-25 | 2016-08-25 | Mercury polluted soil repairing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610722577.2A CN106381151A (en) | 2016-08-25 | 2016-08-25 | Mercury polluted soil repairing agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106381151A true CN106381151A (en) | 2017-02-08 |
Family
ID=57916981
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610722577.2A Pending CN106381151A (en) | 2016-08-25 | 2016-08-25 | Mercury polluted soil repairing agent and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110591728A (en) * | 2019-10-31 | 2019-12-20 | 环保桥(湖南)生态环境工程股份有限公司 | Conditioner for mercury-polluted soil and preparation method thereof |
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| CN104263379A (en) * | 2014-09-23 | 2015-01-07 | 凌少青 | Acidic soil improving agent and application method thereof |
| CN104560047A (en) * | 2014-12-03 | 2015-04-29 | 成都新朝阳作物科学有限公司 | Soil heavy mental passivator and application thereof |
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| CN110591728A (en) * | 2019-10-31 | 2019-12-20 | 环保桥(湖南)生态环境工程股份有限公司 | Conditioner for mercury-polluted soil and preparation method thereof |
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Application publication date: 20170208 |