CN105969393A - Heavy metal soil improvement agent and improvement method - Google Patents
Heavy metal soil improvement agent and improvement method Download PDFInfo
- Publication number
- CN105969393A CN105969393A CN201610319320.2A CN201610319320A CN105969393A CN 105969393 A CN105969393 A CN 105969393A CN 201610319320 A CN201610319320 A CN 201610319320A CN 105969393 A CN105969393 A CN 105969393A
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- China
- Prior art keywords
- soil
- parts
- heavy metal
- modifying agent
- improvement
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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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
-
- 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
- C09K2101/00—Agricultural use
-
- 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
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
Abstract
The invention discloses a heavy metal soil improvement agent and an improvement method. The heavy metal soil improvement agent consists of the following components in parts by mass: 5 parts of siliceous petrified powder, 55 to 65 parts of peat soil, 26 to 35 parts of humus, 27 to 33 parts of shell powder, 55 to 68 parts of activated carbon and 12 to 18 parts of comprehensive trace elements. According to the improvement agent, soil properties can be rapidly improved, and land capability can be improved.
Description
Technical field
The present invention relates to heavy metal technical field of land improvement, particularly relate to a heavy metal species soil conditioner and
Modification method.
Background technology
When heavy metal content in soil increases to more than setting, can make antibacterial in soil, nitrogen-fixing bacteria quantity bright
Aobvious minimizing, can destroy the chlorophyll in plant, reduces root system to moisture and the absorption of nutrient, suppression root system
To nitrogen fixation and nitrate reductase activity.After heavy metal becomes food chain entrance human body by crops, with
Specified protein and various enzyme generation kickback in human body make them lose activity, and at some device of human body
In official, savings gets up to cause chronic poisoning, the most also disturbs copper, cobalt, zinc homergy in vivo, induction
Various diseases, even dead.
The source of heavy metal pollution of soil includes industrial pollution, industrial sludge utilization, soil and fertilizer pollution etc..
Existing heavy metal soil remediation mainly includes soil moved in improve the original method, method of turning over, chemical harnessing measure, Agro-ecology reparation
Measure and biological restoration etc..Existing heavy metal soil restoring technology or range of application are narrower, or cost is high,
Operation complexity, waits and needs improvements.
Summary of the invention
In view of this, the embodiment of the present invention provides heavy metal species soil conditioner and a modification method, main mesh
Be
For reaching above-mentioned purpose, present invention generally provides following technical scheme:
On the one hand, a heavy metal species soil conditioner is embodiments provided, by the group of following mass parts
It is grouped into: 5 parts of siliceous petrochemical industry powder, peat soil 55-65 part, fertile soil 26-35 part, conch meal 27-33
Part, activated carbon 55-68 part, comprehensive trace element 12-18 part.
As preferably, it is made up of the component of following mass parts: 5 parts of siliceous petrochemical industry powder, peat soil 60 parts,
Fertile soil 30 parts, conch meal 30 parts, activated carbon 60 parts, comprehensive trace element 15 parts.
On the other hand, embodiments provide a heavy metal species soil improvement method, comprise the steps:
Every mu of modifying agent using 500-700 kilogram of above-described embodiment, uniformly gives in farmland, then with dilatory
Field beaten by machine, is mixed in soil.
As preferably, modifying agent is sufficiently mixed with soil, stands at least 3 days after mixing, when being used in paddy field,
During standing, the water in paddy field can't not enter the most.
Compared with prior art, the beneficial effects of the present invention is:
Heavy metal element in the modifying agent thorough strong adsorption soil that the embodiment of the present invention provides so that it is will not
Participation cation exchanges, and exchanges in the soil liquid by the heavy metal to adsorb, and is available for plant and inhales in soil
The heavy metal received can substantial amounts of be reduced in allowable range, solves soil compaction phenomenon simultaneously, makes soil become
Obtain soft, be difficult to knot solid.Improve pH-value interval to neutral (5.5-6.5).Improve the physical property of soil,
Promote keeping fertility and the moisture holding capacity of soil.Increase soil quantity of useful microbe, decompose and adsorpting polymerization is poisonous
Material.Promote buffering power of soil, it is to avoid the fertilizer of plant injures fertilizer damage.Expansion strengthens the gap of soil and makes
The good air permeability of soil.Mediate soil swelling-shrinkage so that soil activating pineization.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but not as the limit to the present invention
Fixed.In the following description, what different " embodiments " or " embodiment " referred to is not necessarily same enforcement
Example.Additionally, special characteristic, structure or feature in one or more embodiment can be by any suitable form groups
Close.
Embodiment 1
Heavy metal soil conditioner, is made up of the component of following mass parts: 5 parts of siliceous petrochemical industry powder, peat soil
60 parts, fertile soil 30 parts, conch meal 30 parts, activated carbon 60 parts, comprehensive trace element 15 parts.
Embodiment 2
The present embodiment is different from embodiment 1 to be, heavy metal soil biological modifying agent, by following mass parts
Component forms: 5 parts of siliceous petrochemical industry powder, peat soil 65 parts, fertile soil 35 parts, conch meal 33 parts, lives
68 parts of carbon of property, comprehensive trace element 18 parts.
Embodiment 3
The present embodiment is different from embodiment 1 to be, heavy metal soil biological modifying agent, by following mass parts
Component forms: 5 parts of siliceous petrochemical industry powder, peat soil 55 parts, fertile soil 26 parts, conch meal 27 parts, lives
55 parts of carbon of property, comprehensive trace element 12 parts.
Embodiment 4
Heavy metal soil improvement method, comprises the steps: every mu of improvement using 500 kilograms of embodiments 1
Agent, uniformly gives in farmland, then beats field with tractor, is mixed in soil.
Modifying agent is sufficiently mixed with soil, stands at least 3 days after mixing, if being used in paddy field, and water during this
The water of Tanaka can't not enter the most.
Modifying agent can carry out following effects in soil automatically.The interpolation of modifying agent can make the pH value of the soil liquid
Improve and reduction potential decline, can make a large amount of intensive absorption of heavy metals in soil in the hole of modifying agent,
And be not involved in cation exchange interaction and enter in the soil liquid, absorb for crop root mass.Containing big in modifying agent
After the humic acid of amount, humic acid and heavy metal contact, acidified effect, produce substantial amounts of heavy metallic salt, dense
Degree is gradually increased, and eventually forms saturated solution, produces slightly solubility precipitation, and heavy metal creates and effectively presses down
Make and use.
Being divided into two in the experimental plot of a piece two mu, the embodiment of the present invention 1 is used according to embodiment 4 in No. 1 ground
Modifying agent improve.The Foshan gold certain herbaceous plants with big flowers biology buied on market is used on No. 2 ground as a comparison case
The golden certain herbaceous plants with big flowers LPK bio-fertilizer that Science and Technology Ltd. produces.Two pieces of ground proceed by improvement on the same day.After improvement
Three sub-sampling times are as follows: apply the 6th day, 16 days and 26 days after modifying agent and sample respectively.
It is sampled by identical standard and detects, recording pH value and the reduction potential index of soil.Result is shown in
Table 1 below.
Table 1: different modifying agent process process pH value and the contrast of reduction potential index of heavy-metal contaminated soil
As seen from table, the embodiment of the present invention to the improved effect of heavy metal in soil apparently higher than prior art
Improved effect.
Each component in the embodiment of the present invention is commercially available the most from the market.Certainly also can obtain voluntarily.Such as mud
Charcoal soil can be obtained by burying the non-carbonization of upper layer within coal mines and become in the soil layer of coal.Fertile soil can by mountain from
Row obtains after screening and filtering again, or also may be used according to prior art fermentation acquisition.Conch meal can be by by marine
After the size-reduced cleaning such as shell or oyster shell, pulverizing after high-temperature calcination and obtain.Activated carbon is fine by branch or plant
Dimension etc. after anaerobic high-temp combustion pulverizing and obtain.Siliceous petrochemical industry powder is by after containing silicon ore after crushed high-temperature calcination
Grind.Component and the weight/mass percentage composition of the most preferred siliceous petrochemical industry powder are as follows: silicon is not less than 25.2%,
Protein is not less than 1.7%, and moisture is about 4.1%, and ferrum is not less than 3.72%, and potassium is not less than 1.4%, and sodium is not
Less than 0.18%, remaining is ash.Comprehensive trace element preferably at least includes following element, and each element
Weight/mass percentage composition is as follows: boron >=2%, zinc >=2%, magnesium >=6.5%, sulfur >=9%.The most also can be basic at this
Other elements of upper interpolation, such as ferrum, silicon and calcium etc..
It has been investigated that, after heavy metal element enters soil, the process of being absorbed by plants is sufficiently complex.It
Have to pass through activation to become ionic species and enter in the soil liquid and just can be absorbed by plants.According to heavy metal
The big I of element activity in soil is divided into: exchangeable species, ferrimanganic hydrous oxide combined state, You Jijie
Close state, carbonate combined state and residual.The content of beary metal of residual can represent heavy metal element at soil
Background value in earth, in addition to it, other forms can directly or indirectly be absorbed by plants.And
The position absorbed is then the rhizosphere of plant, so rhizospheric environment directly affects heavy metal and fixes, activates and inhales
Receive.The pH value of such as rhizosphere, Eh value, root secretion and rhizosphere microorganism.Lot of experiments also indicates that root system
Secretions can be acidified, and chelates reducing heavy metal, so that heavy metal becomes the state of plant available.Plant
Object optionally absorbs the nutrient substance in soil, the heavy metal absorbing excess being forced to.Generally pH
The reduction of value, will promote carbonate state cadmium to dissolve, and release is converted into exchangeable cadmium, heavily contaminated to be added.
So plant is typically occurred in acid condition by heavy metallic poison.
The heavy metal soil conditioner of the embodiment of the present invention can make the pH value of the soil liquid improve and reduction potential
Declining, pH value and reduction potential are the important factors affecting species of heavy metals in soil change.
Understanding through test, the modifying agent of present example is under different PH, to contained various in the soil liquid
Heavy metal ion carries out adsorption reaction test, can record indivedual heavy metal adsorption amount and account in the soil liquid and weigh individually
The ratio of total metal content, as follows:
Through the effect of cation exchange capacity, the heavy metal ion being free in the soil liquid can be existed by modifying agent
The nagative potential position more heavy metal ion of absorption that redox current potential increases in declining in soil colloid exists
On its pore surface.The heavy metal ion of modifying agent hole absorption is inner ring misfit thing and outer ring misfit thing, interior
Circle misfit thing is the copper/lead element less than natural amendments zero potential (ZPC) 5.9, directly adsorbs in hole
Surface, misfit thing in outer ring is the cadmium/zinc/nickel higher than adsorbent zero potential (ZPC) 5.9 ... wait element to adsorb
On inner ring misfit thing, the effect of absorption and quantity are till hole absorption reaches maximum saturation amount.Plant
Root mass only can absorb the various elements in the soil liquid and nutrient, and the various elements in soil exchange through cation
The effect of capacity, constantly separates out from soil colloid middle reaches and comes for plant absorption the soil liquid, but quilt
The heavy metal element of modifying agent absorption, they, will not be because of cation by the pinning of the nagative potential strength in hole
The effect of exchange capacity and free out, then the heavy metal concentration in the soil liquid significantly declines, solution
In to be available for the heavy metal element that plant roots mass absorbs very little, the crop that grows under this soil environment
Agricultural product, content of beary metal is the most extremely low, meets below the safe level of national regulation.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to
This, any those familiar with the art, in the technical scope that the invention discloses, can readily occur in
Change or replacement, all should contain within protection scope of the present invention.Therefore, protection scope of the present invention should
It is as the criterion with described scope of the claims.
Claims (4)
1. heavy metal soil conditioner, it is characterised in that be made up of the component of following mass parts: siliceous petrochemical industry
5 parts of powder, peat soil 55-65 part, fertile soil 26-35 part, conch meal 27-33 part, activated carbon 55-68
Part, comprehensive trace element 12-18 part.
Heavy metal soil conditioner the most according to claim 1, it is characterised in that by following mass parts
Component composition: 5 parts of siliceous petrochemical industry powder, peat soil 60 parts, fertile soil 30 parts, conch meal 30 parts,
Activated carbon 60 parts, comprehensive trace element 15 parts.
3. heavy metal soil improvement method, comprises the steps: that every mu is used 500-700 kilogram of claim
Modifying agent described in 1, uniformly gives in farmland, then beats field with tractor, is mixed in soil.
Heavy metal soil improvement method the most according to claim 3, it is characterised in that modifying agent and soil
Earth is sufficiently mixed, and stands at least 3 days after mixing, and when being used in paddy field, during standing, the water in paddy field does not enters
Do not go out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319320.2A CN105969393A (en) | 2016-05-13 | 2016-05-13 | Heavy metal soil improvement agent and improvement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319320.2A CN105969393A (en) | 2016-05-13 | 2016-05-13 | Heavy metal soil improvement agent and improvement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105969393A true CN105969393A (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610319320.2A Pending CN105969393A (en) | 2016-05-13 | 2016-05-13 | Heavy metal soil improvement agent and improvement method |
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| CN (1) | CN105969393A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587632A (en) * | 2018-06-22 | 2018-09-28 | 广州新农科肥业科技有限公司 | A kind of shell waste soil conditioner and the preparation method and application thereof |
| CN109207157A (en) * | 2018-11-05 | 2019-01-15 | 湖南泰谷生态工程有限公司 | A kind of chelating heavy metal soil conditioner and preparation method thereof |
| CN111575015A (en) * | 2020-06-12 | 2020-08-25 | 江西普瑞丰生态科技有限公司 | Biological repairing agent for farmland heavy metal contaminated soil, preparation method and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599922A (en) * | 2013-11-20 | 2014-02-26 | 厦门鹏原实业有限公司 | Soil heavy mental adsorbent |
| CN105482827A (en) * | 2015-11-28 | 2016-04-13 | 赵洪军 | Soil conditioner with function of heavy metal-polluted soil restoration |
-
2016
- 2016-05-13 CN CN201610319320.2A patent/CN105969393A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103599922A (en) * | 2013-11-20 | 2014-02-26 | 厦门鹏原实业有限公司 | Soil heavy mental adsorbent |
| CN105482827A (en) * | 2015-11-28 | 2016-04-13 | 赵洪军 | Soil conditioner with function of heavy metal-polluted soil restoration |
Non-Patent Citations (1)
| Title |
|---|
| 李剑睿等: "农田重金属污染原位钝化修复研究进展", 《生态环境学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108587632A (en) * | 2018-06-22 | 2018-09-28 | 广州新农科肥业科技有限公司 | A kind of shell waste soil conditioner and the preparation method and application thereof |
| CN109207157A (en) * | 2018-11-05 | 2019-01-15 | 湖南泰谷生态工程有限公司 | A kind of chelating heavy metal soil conditioner and preparation method thereof |
| CN109207157B (en) * | 2018-11-05 | 2021-05-25 | 湖南泰谷生态工程有限公司 | Heavy metal chelated soil conditioner and preparation method thereof |
| CN111575015A (en) * | 2020-06-12 | 2020-08-25 | 江西普瑞丰生态科技有限公司 | Biological repairing agent for farmland heavy metal contaminated soil, preparation method and application |
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Application publication date: 20160928 |
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