CN106010562B - A kind of farmland soil heavy metals passivator and its application - Google Patents
A kind of farmland soil heavy metals passivator and its application Download PDFInfo
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- CN106010562B CN106010562B CN201610406724.5A CN201610406724A CN106010562B CN 106010562 B CN106010562 B CN 106010562B CN 201610406724 A CN201610406724 A CN 201610406724A CN 106010562 B CN106010562 B CN 106010562B
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- passivator
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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
- B09C1/08—Reclamation of contaminated soil chemically
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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
- C09K2101/00—Agricultural use
Abstract
The invention discloses a kind of farmland soil heavy metals passivator and its application, by weight, the composition of the passivator each component is：1 ~ 4 part of iron powder, 4 ~ 6 parts of chitosan, 4 parts of chicken manure, 4 ~ 6 parts of sepiolite, 2 ~ 5 parts of lime.Passivator is fully mixed, and after balance 20d, planting vegetable can substantially reduce the pollution risk of Heavy Metals In Vegetables.Research is found, apply the passivator passivation vegetable soil in, the heavy metal of slight pollution, mainly cadmium, lead, zinc etc., the content for the heavy metal that dissociates in vegetable field can effectively be reduced by applying after passivating material, it is particularly suitable for heavy metal-passivated cadmium, the absorption of vegetables heavy metal is reduced, so as to reduce the absorption of vegetables heavy metal ion, recover vegetable soil ecological functions and Industrial Function, improve the quality of vegetables.
Description
Technical field
The present invention relates to a kind of farmland soil heavy metals passivator and its application, it is related to the Synthetic of heavy metal pollution of soil
Manage technical field.
Background technology
Developing rapidly for industry causes different degrees of pollution to environment, wherein, agricultural land soil and main farm produce
Different degrees of influence is received, due to long-term sewage irrigation, agriculture chemical administration, mining, smelting and the chemical enterprise three wastes
Discharge so that city and industrial area periphery heavy metals in farmland accumulation, so as to directly affect the quality safety of agricultural product.According to agricultural
The investigation in portion, national irrigating region there are about 1,400,000 hm2, wherein accounting for irrigating region area by the land area of heavy metal pollution
64.8%, wherein slight pollution accounts for 46.7%, intermediate pollution accounts for 9.7%, and serious pollution accounts for 8.4%.Heavy metal enters
People knows from experience to react with protein, nucleic acid and micro active material such as vitamin, hormone etc., causes the chemical work(of organism physiology
Lesion can be produced, the influence mankind's is healthy.
Mainly have following several for the restorative procedure of heavy metal pollution of soil, one is the existing forms for changing heavy metal,
Reduce its migration and biological effectiveness；Two be that the heavy metal in soil is removed using technological means；Three be the kind for changing plant
Plant system, makes heavy metal in soil be difficult to enter human body by food chain.Wherein, the passivation disposal technology of heavy metal is a kind of
The method that heavy metal-polluted soil activity can preferably be reduced, is mainly existed by adding passivating material into soil to change heavy metal
Form in soil, and then reduce the biological effectiveness of heavy metal.Passivation disposal technology has in situ, cheap, easy to control, effective
The advantages of phase is long.It is commonly used for having for heavy-metal contaminated soil passivating material：Zeolite, montmorillonite, kaolin, sepiolite, concave convex rod
Stone and vermiculite etc., and it is wherein best with the treatment effect of sepiolite, montmorillonite and zeolite.
The content of the invention
The problem of purpose of the present invention exists according to above-mentioned vegetable cultivation farmland proposes, using existing scientific and technological achievement,
The Heavy Metal in Vegetable Farm Soil passivating material of offer can solidify in vegetable field soil in, the heavy metal of slight pollution, a huge sum of money for solidification
Category is mainly lead, cadmium, chromium, copper, zinc etc., and it is qualified that application passivating material can be produced in, on slight heavy-metal contaminated soil
Vegetables, recover vegetable field soil ecological functions and Industrial Function, and the quality of vegetables waits until to improve.
The technical scheme is that there is provided a kind of farmland soil heavy metals passivator, by weight, the passivator is each
The composition of component is：1~4 part of iron powder, 5 parts of chitosan, 4 parts of chicken manure, 4~6 parts of sepiolite, 2~5 parts of lime.
The oxidation-reduction potential for acting as reduction soil of iron powder in the present invention；Oxidation of iron powder generation iron oxide can with again
Metal formation composite precipitation；Chitosan can effectively reduce Available Cu and cadmium content in soil, when the soil of heavy metal pollution
Apply in earth after chitosan, soil enzyme activities and soil microbe quantity are significantly improved.Chicken manure main function is that increase soil has
Machine matter content, research shows that the administration of chicken manure can effectively reduce the absorption of crop heavy metal；Space in sepiolite can be adsorbed
Heavy metal in soil, reduces the validity of heavy metal；The effect of lime mainly adjusts the pH value of acid soil, rises it
Height, so that soil available content of beary metal is reduced.Using cooperatively for several materials can reduce soil available weight
Metal can reduce the absorption of crop heavy metal again, so as to reach the purpose of passivation.
The present invention combines inorganic component (iron powder, sepiolite, lime), Ke Yixiang with organic component (chitosan, chicken manure)
Mutually promote the passivation of heavy metal.
Further, by weight, the composition of the passivator each component is：1~4 part of iron powder, 5 parts of chitosan, chicken manure 4
Part, 4~6 parts of sepiolite, 2~5 parts of lime.
Further, by weight, the composition of the passivator each component is：2~3 parts of iron powder, 5 parts of chitosan, chicken manure 4
Part, 6 parts of sepiolite, 4 parts of lime.
The present invention further provides the application of the passivator, every kilogram of air-dried 15~25 grams of soil application passivator.
The beneficial effects of the invention are as follows the material that the present invention is selected is the common material easily prepared, with low cost, it is easy to
Prepare, be easy to promote, the experiment proved that, the present invention can increase the required nutritional ingredient in soil needed for vegetables, accelerate vegetables
Growth, and the passivation effect of heavy metal is extremely notable, is particularly suitable for heavy metal-passivated cadmium, with very high economic benefit.
Embodiment
The present invention is described in further detail with reference to embodiments.
The passivating material of described reduction vegetable field heavy metal ion activity is environmental type, has no toxic side effect, leads to
The concentration of free heavy metal ion in complexing and the nutrition recuperating effect with heavy metal, reduction soil is crossed, is the life of vegetables
The long environment that safety is provided.
Experiment soil used picks up from Changsha, Hunan vegetable cultivation base, and investigation finds that this area farmland is acid soil
Earth, and heavy metal pollution is more serious, contaminated soil type is red soil, and major pollutants are Cd, Pb and Zn；According to soil environment matter
Amount standard, the vegetable field soil is intermediate pollution.
Pakchoi growth condition example：
By being applied in acid soil after the mixing of passivating material ratio, it is directly added into, described Heavy Metal in Vegetable Farm Soil
Passivator, the weight proportion of each kilogram of air-dried soil application passivator each component is：Iron powder 3g, chitosan 5g, chicken manure 4g, sea
Afrodite 6g, lime 4g.Sepiolite is natural sepiolite, grinds；Other each components are also powdery, are mixed.
Different tupes (table one) are set：Blank control handles CK, single plus inorganic component (iron powder, sepiolite, stone
Ash) I, single plus organic component (chicken manure, chitosan), addition the present embodiment passivator is I+O, is shown in Table 1.Each 3 repetitions of processing,
It is 2kg, regulation to the 50% of maximum water holding capacity per basin dry ground weight；Ten days before planting, in addition to CK groups, added per basin identical heavy
The passivator 5g of the corresponding component of amount, stirs.Wherein conventional fertilizer application is to provide azophoska.
The potted plant experiment fertilizer application mode of table 1
After each component is mixed according to the above ratio, directly it is exerted into soil, after plantation pakchoi, obtains result of the test such as table
Shown in two, inorganic component, organic component and the present embodiment passivator formula are added compared with control group CK, pakchoi can be reduced
Aerial part lead, zinc and cadmium content, the pakchoi of addition organic component plantation is compared with the pakchoi drop after addition inorganic component plantation
The effect of low heavy metal is become apparent from, but lead and cadmium content are still higher than《National food safety standard pollutants in food is limited the quantity》
(GB2762-2012) limit value in, and counterweight in standard can be met by adding the pakchoi planted after the present embodiment passivator formula
The related limit value of metal, therefore, this passivator can meet the requirement of effectively reduction pakchoi aerial part heavy metal.
Each recipe ingredient of this passivator is easy to get, and effect is significantly, can not only reduce the absorption of crop heavy metal, organic fertilizer
Addition also cause crop well-grown itself, be particularly suitable for the passivation of the agricultural land soil containing cadmium.
The potted plant experiment different disposal of table two with compare in pakchoi overground part content of beary metal (mg/kg)
Claims (4)
1. a kind of farmland soil heavy metals passivator, it is characterised in that by weight, the composition of the passivator each component is：
1 ~ 4 part of iron powder, 4 ~ 6 parts of chitosan, 4 parts of chicken manure, 4 ~ 6 parts of sepiolite, 2 ~ 5 parts of lime.
2. passivator according to claim 1, it is characterised in that by weight, the composition of the passivator each component is：
1 ~ 4 part of iron powder, 5 parts of chitosan, 4 parts of chicken manure, 4 ~ 6 parts of sepiolite, 2 ~ 5 parts of lime.
3. passivator according to claim 1, it is characterised in that by weight, the composition of the passivator each component is：
2 ~ 3 parts of iron powder, 5 parts of chitosan, 4 parts of chicken manure, 6 parts of sepiolite, 4 parts of lime.
4. a kind of application of passivator as described in claim any one of 1-3, it is characterised in that every kilogram of air-dried soil application
15 ~ 25 grams of passivator.
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| CN201610406724.5A CN106010562B (en) | 2016-06-12 | 2016-06-12 | A kind of farmland soil heavy metals passivator and its application |
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| CN106010562B true CN106010562B (en) | 2017-08-25 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106069429A (en) * | 2016-06-12 | 2016-11-09 | 湖南永清环保研究院有限责任公司 | A kind of method reducing semilate rice Cd concentration of brown rice |
| CN107350281A (en) * | 2017-05-11 | 2017-11-17 | 中国环境科学研究院 | One kind is applied to northern farmland soil of sewage irrigation area passivator and its application process |
| CN109078972B (en) * | 2017-06-14 | 2021-05-25 | 中国地质科学院矿产资源研究所 | Heavy metal contaminated soil remediation material and application method thereof |
| CN108003886A (en) * | 2017-12-11 | 2018-05-08 | 广西大学 | A kind of composite passivant and its application method of remediating heavy metal combined pollution agricultural land soil |
| CN111100646A (en) * | 2018-10-26 | 2020-05-05 | 南京化学工业园环保产业协同创新有限公司 | Heavy metal stabilizer for soil acidity and alkalinity improvement |
| CN109575932B (en) * | 2019-01-23 | 2020-10-02 | 海南省农业科学院农业环境与土壤研究所 | Acid soil conditioner and preparation method thereof |
| CN110982535A (en) * | 2019-12-19 | 2020-04-10 | 江苏华东新能源勘探有限公司（江苏省有色金属华东地质勘查局八一三队） | Biomass charcoal soil heavy metal restoration agent and application method thereof |
| CN111574306A (en) * | 2020-05-25 | 2020-08-25 | 贵州大学 | Soil heavy metal passivator and preparation process thereof |
| CN112479773A (en) * | 2020-11-03 | 2021-03-12 | 天津华勘环保科技有限公司 | Compound passivator suitable for heavy metal compound contaminated soil and use method thereof |
| CN112354521A (en) * | 2020-11-17 | 2021-02-12 | 昆明理工大学 | Method for enhancing copper ion adsorption of sepiolite by using soluble organic matters |
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Effective date of registration: 20190625 Address after: 410329 Liuyang National Biomedical Industrial Base, Changsha City, Hunan Province (beside National Highway 319) Patentee after: YONKER ENVIRONMENTAL PROTECTION CO., LTD. Address before: 410330 the 319 National Road of Liuyang National Economic Development Zone, Changsha, Hunan. Patentee before: HUNAN YONKER ENVIRONMENTAL PROTECTION RESEARCH INSTITUTE CO., LTD. |