CN107674683A - A kind of passivator of repairing heavy metal in soil pollution - Google Patents
A kind of passivator of repairing heavy metal in soil pollution Download PDFInfo
- Publication number
- CN107674683A CN107674683A CN201710886691.3A CN201710886691A CN107674683A CN 107674683 A CN107674683 A CN 107674683A CN 201710886691 A CN201710886691 A CN 201710886691A CN 107674683 A CN107674683 A CN 107674683A
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- China
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- parts
- heavy metal
- passivator
- soil
- bentonite
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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
-
- 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
Abstract
The invention discloses a kind of passivator of repairing heavy metal in soil pollution, it is made up of the raw material of following weight parts：25 50 parts of bentonite, 10 30 parts of 20 60 parts of straw ash, 20 60 parts of brutish excrement, 10 20 parts of lime, 15 40 parts of iron hydroxide and phosphate, the present invention is heavy metal-polluted to acid, neutral soil to be infected with stable repairing effect, and cost is low, dosage is few, by applying a small amount of passivator, the pollution of heavy metal in soil can be reduced, allow the plant of the inside to be had no adverse effect with normal growth, secondary pollution will not be caused.
Description
Technical field
The present invention relates to heavy metal pollution of soil to release safety production technique field, a more particularly to a kind of rehabilitating soil huge sum of money
Belong to the passivator of pollution.
Background technology
If passivation refers to corrosion product structure with densification of the metal due to the effect generation of medium, one layer is formd
Film (often invisible), is closely covered in metallic surface, then changes metallic surface state, makes the electrode of metal
Current potential turns into anti-corrosion passive state significantly to positive direction transition.Current soil heavy metal pollution turns into global environmental problem,
The characteristics of latent covering property, irreversibility and chronicity are formed to the ecosystem, grave danger, and human body is influenceed by food chain
With the strong agricultural product health of animal.Therefore find effective and reasonable method improvement and repairing heavy metal pollution is significant.Profit
With passivation principle, negative effect of the heavy metal in soil can be reduced by using passivator, reduce it and plant is broken
Bad, this method is most rationally, effectively.But such passivator price is high in the market, effect is not lasting, up for entering one
Step is improved.
Heavy metal pollution of soil is that contaminated area is most wide in current environmental pollution, endangers one of the environmental problem of maximum, soil
Heavy metal retains length because of its poor mobility in earth, the features such as being not easy to be degraded and receive much concern.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of passivator of repairing heavy metal in soil pollution, existing to solve
There is caused above-mentioned multinomial defect in technology.
To achieve the above object, the present invention provides following technical scheme：A kind of passivation of repairing heavy metal in soil pollution
Agent, it is made up of the raw material of following weight parts：Bentonite 25-50 parts, straw ash 20-60 parts, brutish excrement 20-60 parts, stone
Grey 10-20 parts, iron hydroxide 15-40 parts and phosphate 10-30 parts, the method that the raw material of above-mentioned parts by weight is made to passivator,
Carry out according to the following steps：
1) bentonite material is worn into the bentonite of 80-150 mesh；
2) brutish excrement is dried, is ground into 100-120 mesh powders；
3) bentonite 30-45 parts by weight, brutish excrement 30-50 parts, lime 10-20 parts, iron hydroxide 20-35 are weighed
Part, phosphate 15-25 parts, are uniformly mixing to obtain mixing material；
4) mixed material drying machine is dried to moisture 10-15%, obtains material drying；
5) straw ash 30-50 parts are added in material drying, obtain the passivator of repairing heavy metal in soil pollution.
Preferably, the brutish excrement includes pig manure, horsehit and chicken manure.
Beneficial effect using above technical scheme is：A kind of passivator of repairing heavy metal in soil pollution of the present invention,
Brutish excrement and straw ash can effectively promote exchange state Cd to close organic and manganese oxide reference state Cd conversions to untwisting, moreover it is possible to drop
Cr and Cu biological effectiveness in low soil, water-soluble state Cr, Cu and exchange state Cr, Cu are reduced, increase organically combine state Cr, Cu,
The alkaline matters such as lime, P in soil H can be not only improved, allow soil surface negative electrical charge to increase, so that soil heavy metal is affine
Property increase, and PH improve after, the adsorbance of the heavy metal ion such as Cd can be improved, by bentonitic absorption, pass through suction
Displacement is echoed, allows heavy metal element to be converted into being not easy water-soluble material, reduces the pollution to soil and plant, ensure that passivation effect
The persistence of fruit, the validity of toxic metals, efficiency high are reduced, and cost is low.
Embodiment
The embodiment of the present invention：A kind of passivator of repairing heavy metal in soil pollution, by the original of following weight parts
Material is made：Bentonite 25-50 parts, straw ash 20-60 parts, brutish excrement 20-60 parts, lime 10-20 parts, iron hydroxide
15-40 parts and phosphate 10-30 parts, the method that the raw material of above-mentioned parts by weight is made to passivator, are carried out according to the following steps：
1) bentonite material is worn into the bentonite of 80-150 mesh；
2) brutish excrement is dried, is ground into 100-120 mesh powders；
3) bentonite 30-45 parts by weight, brutish excrement 30-50 parts, lime 10-20 parts, iron hydroxide 20-35 are weighed
Part, phosphate 15-25 parts, are uniformly mixing to obtain mixing material；
4) mixed material drying machine is dried to moisture 10-15%, obtains material drying；
5) straw ash 30-50 parts are added in material drying, obtain the passivator of repairing heavy metal in soil pollution.
In the present embodiment, the brutish excrement includes pig manure, horsehit and chicken manure.
The passivator polluted based on a kind of above-mentioned, of the invention repairing heavy metal in soil, brutish excrement and straw ash can be with
Exchange state Cd is effectively promoted to close organic and manganese oxide reference state Cd conversions to untwisting, moreover it is possible to reduce the biology of Cr and Cu in soil
Validity, water-soluble state Cr, Cu and exchange state Cr, Cu are reduced, increase the alkaline matter such as organically combine state Cr, Cu, lime, not only may be used
To improve P in soil H, soil surface negative electrical charge is allowed to increase, so as to the compatibility increase of soil heavy metal, and after PH raisings,
The adsorbance of the heavy metal ion such as Cd can be improved, by bentonitic absorption, by adsorbing and replacing, allows heavy metal element
It is converted into being not easy water-soluble material, reduces the pollution to soil and plant, ensure that the persistence of passivation effect, reduce poisonous
The validity of metal, efficiency high, and cost is low.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (2)
- A kind of 1. passivator of repairing heavy metal in soil pollution, it is characterised in that：It is made up of the raw material of following weight parts：Bentonite Miberal powder 25-50 parts, straw ash 20-60 parts, brutish excrement 20-60 parts, lime 10-20 parts, iron hydroxide 15-40 parts and phosphate 10-30 parts, the method that the raw material of above-mentioned parts by weight is made to passivator, carry out according to the following steps：1) bentonite material is worn into the bentonite of 80-150 mesh；2) brutish excrement is dried, is ground into 100-120 mesh powders；3) weigh bentonite 30-45 parts by weight, brutish excrement 30-50 parts, lime 10-20 parts, iron hydroxide 20-35 parts, Phosphate 15-25 parts, are uniformly mixing to obtain mixing material；4) mixed material drying machine is dried to moisture 10-15%, obtains material drying；5) straw ash 30-50 parts are added in material drying, obtain the passivator of repairing heavy metal in soil pollution.
- A kind of 2. passivator of repairing heavy metal in soil pollution according to claim 1, it is characterised in that：The brutish excrement Just pig manure, horsehit and chicken manure are included.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710886691.3A CN107674683A (en) | 2017-09-25 | 2017-09-25 | A kind of passivator of repairing heavy metal in soil pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710886691.3A CN107674683A (en) | 2017-09-25 | 2017-09-25 | A kind of passivator of repairing heavy metal in soil pollution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107674683A true CN107674683A (en) | 2018-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710886691.3A Pending CN107674683A (en) | 2017-09-25 | 2017-09-25 | A kind of passivator of repairing heavy metal in soil pollution |
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| CN (1) | CN107674683A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762574A (en) * | 2019-02-20 | 2019-05-17 | 江西省科学院生物资源研究所 | Passivator for being passivated soil heavy metal cadmium and preparation method thereof and the method for being passivated soil heavy metal cadmium using it |
| CN109809949A (en) * | 2019-04-04 | 2019-05-28 | 贵州净界科技有限公司 | Fertilizer for repairing manganese-polluted soil and preparation method thereof |
| CN110153168A (en) * | 2018-03-05 | 2019-08-23 | 苏州睿烁环境科技有限公司 | A kind of renovation agent of heavy-metal contaminated soil and preparation method thereof |
| CN110257078A (en) * | 2019-06-28 | 2019-09-20 | 中冶南方都市环保工程技术股份有限公司 | A kind of heavy metal curing agent and its preparation method and application based on iron and manganese oxides |
Citations (3)
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| CN102719255A (en) * | 2012-07-03 | 2012-10-10 | 广西大学 | Preparation and application method of soil heavy metal composite passivating agent |
| CN104804747A (en) * | 2015-04-27 | 2015-07-29 | 衡阳保地环境科技有限公司 | Calcium-based heavy metal soil repairing agent and preparation method |
| CN106734123A (en) * | 2016-11-18 | 2017-05-31 | 东莞中科土壤科技开发有限公司 | A kind of composite conditioner repaired for heavy metal polluted soil of farmland and preparation method thereof |
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2017
- 2017-09-25 CN CN201710886691.3A patent/CN107674683A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102719255A (en) * | 2012-07-03 | 2012-10-10 | 广西大学 | Preparation and application method of soil heavy metal composite passivating agent |
| CN102719255B (en) * | 2012-07-03 | 2014-08-06 | 广西大学 | Preparation and application method of soil heavy metal composite passivating agent |
| CN104804747A (en) * | 2015-04-27 | 2015-07-29 | 衡阳保地环境科技有限公司 | Calcium-based heavy metal soil repairing agent and preparation method |
| CN106734123A (en) * | 2016-11-18 | 2017-05-31 | 东莞中科土壤科技开发有限公司 | A kind of composite conditioner repaired for heavy metal polluted soil of farmland and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 胡宏祥等主编: "《环境土壤学（第1版）》", 31 August 2013, 合肥工业大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110153168A (en) * | 2018-03-05 | 2019-08-23 | 苏州睿烁环境科技有限公司 | A kind of renovation agent of heavy-metal contaminated soil and preparation method thereof |
| CN109762574A (en) * | 2019-02-20 | 2019-05-17 | 江西省科学院生物资源研究所 | Passivator for being passivated soil heavy metal cadmium and preparation method thereof and the method for being passivated soil heavy metal cadmium using it |
| CN109809949A (en) * | 2019-04-04 | 2019-05-28 | 贵州净界科技有限公司 | Fertilizer for repairing manganese-polluted soil and preparation method thereof |
| CN110257078A (en) * | 2019-06-28 | 2019-09-20 | 中冶南方都市环保工程技术股份有限公司 | A kind of heavy metal curing agent and its preparation method and application based on iron and manganese oxides |
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