CN108913153A - A kind of composite material suitable for heavy-metal composite pollution farmland safe utilization - Google Patents
A kind of composite material suitable for heavy-metal composite pollution farmland safe utilization Download PDFInfo
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- CN108913153A CN108913153A CN201810894529.0A CN201810894529A CN108913153A CN 108913153 A CN108913153 A CN 108913153A CN 201810894529 A CN201810894529 A CN 201810894529A CN 108913153 A CN108913153 A CN 108913153A
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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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- 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
- 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
Abstract
The present invention provides a kind of composite material suitable for heavy-metal composite pollution farmland safe utilization, the composition and parts by weight of the composite material are as follows:Paris white 10-20 parts by weight, magnesium powder 5-10 parts by weight, phosphate 30-50 parts by weight, humus 40-60 parts by weight.Existing heavy metal pollution soil is after carrying out crop planting, content of beary metal is exceeded in obtained grain, it not can be carried out and normally sell, therefore need just re-start the plantation of crops after physics, chemistry, biological method reparation, but physics, chemistry, biological method have the shortcomings that rehabilitation cost is high, time-consuming, is also easy to produce secondary pollution, composite material disclosed by the invention can effectively slow down the absorption of rice and corn to heavy metal in soil, to reduce the content of heavy metal in grain, it is ensured that heavy metal pollution farmland can be normally carried out farming.
Description
Technical field
The present invention relates to a kind of composite materials suitable for polluted agricultural land safe utilization, are suitable for weight more particularly to one kind
The composite material of metal combined contamination farmland safe utilization.
Background technique
With the development of science and technology, the living environment of the mankind is also suffering from unprecedented pollution, especially industrial production
The waste generated in the process influences the growth of field-crop to the serious heavy metal pollution of soil reclamation and organic pollution
And food safety.
Existing heavy metal pollution soil is after carrying out crop planting, and content of beary metal is exceeded in obtained grain, cannot
Normally sold, it is therefore desirable to the plantation of crops can be just re-started after physics, chemistry, biological method reparation,
But physics, chemical method are of limited application, and are primarily adapted for use in showering, have huge project amount, labor intensive, repair valence
The disadvantage of lattice valuableness, easily does great damage to soil nutrient, structure and microbiologic population in repair process, so as to cause
Secondary Soil Environmental Pollution and destruction, more easily lead to soil erosion.Although and biological method uses safe, biological prosthetic effect
Rate is lower, and the growth period of biology is longer, causes the reparation used time longer, soil can not be cultivated for a long time, seriously affect farmland
Normal use.
Summary of the invention
The present invention provides a kind of composite materials suitable for heavy-metal composite pollution farmland safe utilization, at least to solve
In heavy metal polluted soil, plantation will lead to the exceeded problem of grain content of beary metal to crops on the ground in the prior art.
The present invention provides a kind of composite material suitable for heavy-metal composite pollution farmland safe utilization, the composite woods
The composition and parts by weight of material are as follows:Paris white 10-20 parts by weight, magnesium powder 5-10 parts by weight, phosphate 30-50 weight
Part, humus 40-60 parts by weight.
Further, the phosphate is selected from one of calcium phosphate, double superhosphate, ammonium dihydrogen phosphate or a variety of.
Further, the magnesium powder is magnesia powder.
Further, the composite material further includes charcoal 5-20 parts by weight.
Further, the charcoal is in rice straw charcoal, eucalyptus sawdust charcoal, cow dung charcoal
It is one or more.
Further, the composite material further includes organic fertilizer 5-30 parts by weight.
Further, the organic fertilizer is biological organic fertilizer.
The invention also discloses a kind of application method of above-mentioned composite material is as follows:
Before crop-planting, repair materials are uniformly applied to Cd, Cu and Pb according to 250-500kg/ mus of applied amount and are answered
It closes in contaminated soil, and is mixed with topsoil, curing carried out plant seeding after 2-6 weeks.
Further, the application ratio of the composite material is 300kg/ mus.
Further, the long-term cropping is selected from one of rice, corn or a variety of.
The present invention compared with the existing technology, can effectively slow down the absorption of rice and corn to heavy metal in soil, thus
Reduce the content of heavy metal in grain, it is ensured that heavy metal pollution farmland can be normally carried out farming.Meanwhile composite wood of the invention
Material can be such that the content of organic matter in soil increases, and significantly improve beneficial microorganism ratio, and improve rice heavy metal-polluted
The yield on soil is contaminated, yield highest increases by 20% or more, reaches 600kg/ mus, and Cd and Pb content can expire in rice grain
Sufficient food hygienic standard.In addition, the lasting period of composite material of the present invention is long, after once applying, it can be ensured that two season rice just
It is frequently grown, reduces planting cost.
Specific embodiment
It in order to enable those skilled in the art to better understand the solution of the present invention, below will be to the skill in the embodiment of the present invention
Art scheme is clearly and completely described, it is clear that and the described embodiment is only a part of the embodiment of the present invention, without
It is whole embodiments.
The addressing place that the embodiment of the present invention and reference examples are implemented is to be disassembled positioned at South China Electronic Waste Recycling Area
Activity influences, and agricultural land soil shows Cd, Cu and Pb combined pollution, and content is respectively 1.0,260 and 220mg/kg.The present invention is real
It applies example and reference examples implements the rice varieties of plantation as Fengyou Simiao, the kind of corn is mysorethorn 5.
It should be noted that rice varieties be also chosen as the excellent China in day account for, China Airlines Limited 31, golden rice excellent 998 and wide by eight excellent 165, it is beautiful
Rice kind is also chosen as Hua Zhen, positive pellet 998.
The calculating of Nei Meiluo composite index is carried out according to Cd, Cu and Pb combined pollution degree, as shown in table 1 below.
Table 4.1-1 intermediate pollution farmland demonstration area heavy metal content in soil and NeiMeiLuo Index
Note:Standard executes《Standard of soil environment quality》(GB15618-1995).
Nei Meiluo composite index Soil Contamination Evaluation standard is as follows:P≤0.7, the class of pollution are 1 grade (safety);0.7<P is comprehensive
≤ 1, the class of pollution is 2 grades (warning line);1<P is comprehensive≤and 2, the class of pollution is 3 grades (slight pollution);2<P is comprehensive≤and 3, the class of pollution
For 4 grades (intermediate pollutions);P is comprehensive>3, the class of pollution be 4 grades (serious pollution) (it is perhaps superfine, 2007;Huang Hongying etc., 2011).Cause
This, the quasi- Nei Meiluo composite index for selecting farmland is 4.29, belongs to serious pollution area.
Soil is subjected to region division, is divided into 11 experimental fields, each area is 400m2, total 4400m2.Respectively 11
The experiment of embodiment 1-10 and reference examples is carried out in a experimental field.
Embodiment 1
The composition and parts by weight of 1 composite material of the embodiment of the present invention are as follows:10 parts by weight of Paris white, magnesia powder
10 parts by weight, 30 parts by weight of calcium phosphate, 50 parts by weight of humus.
The application method of 1 composite material of the embodiment of the present invention is as follows:
Step 1:Before crop-planting, repair materials are uniformly applied in soil according to 300kg/ mus of applied amount, and
It is mixed with topsoil, the sowing of rice and corn is carried out after curing 2 weeks;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as A-1 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as B-1 group.-
Embodiment 2
The composition and parts by weight of 2 composite material of the embodiment of the present invention are as follows:20 parts by weight of Paris white, magnesia powder
5 parts by weight, 40 parts by weight of calcium phosphate, 60 parts by weight of humus, 20 parts by weight of rice straw charcoal.
The application method of 2 composite material of the embodiment of the present invention is as follows:
Step 1:Before crop-planting, repair materials are uniformly applied in soil according to 300kg/ mus of applied amount, and
It is mixed with topsoil, the sowing of rice and corn is carried out after curing 2 weeks;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as A-2 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as B-2 group.
Embodiment 3
The composition and parts by weight of 3 composite material of the embodiment of the present invention are as follows:15 parts by weight of Paris white, magnesia powder
8 parts by weight, 50 parts by weight of ammonium dihydrogen phosphate, 40 parts by weight of humus.30 parts by weight of biological organic fertilizer.
The application method of 2 composite material of the embodiment of the present invention is as follows:
Step 1:Before crop-planting, repair materials are uniformly applied in soil according to 300kg/ mus of applied amount, and
It is mixed with topsoil, the sowing of rice and corn is carried out after curing 2 weeks;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as A-3 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as B-3 group.
Embodiment 4
The composition and parts by weight of 4 composite material of the embodiment of the present invention are as follows:10 parts by weight of Paris white, magnesia powder
10 parts by weight, 30 parts by weight of ammonium dihydrogen phosphate, 50 parts by weight of humus, 5 parts by weight of rice straw charcoal, biological organic fertilizer 20
Parts by weight.
The application method of 4 composite material of the embodiment of the present invention is as follows:
Step 1:Before crop-planting, repair materials are uniformly applied in soil according to 300kg/ mus of applied amount, and
It is mixed with topsoil, the sowing of rice and corn is carried out after curing 2 weeks;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as A-4 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as B-4 group.
Embodiment 5
The composition and parts by weight of 5 composite material of the embodiment of the present invention are as follows:10 parts by weight of Paris white, magnesia powder
10 parts by weight, 30 parts by weight of ammonium dihydrogen phosphate, 50 parts by weight of humus, 20 parts by weight of rice straw charcoal, biological organic fertilizer 5
Parts by weight.
The application method of 5 composite material of the embodiment of the present invention is as follows:
Step 1:Before crop-planting, repair materials are uniformly applied in soil according to 300kg/ mus of applied amount, and
It is mixed with topsoil, the sowing of rice and corn is carried out after curing 2 weeks;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as A-5 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as B-5 group.
Embodiment 6
The composition and parts by weight of 6 composite material of the embodiment of the present invention are as follows:10 parts by weight of Paris white, weight peroxophosphoric acid
30 parts by weight of calcium, 50 parts by weight of humus.
The application method of 6 composite material of the embodiment of the present invention is as follows:
Step 1:Before crop-planting, repair materials are uniformly applied in soil according to 300kg/ mus of applied amount, and
It is mixed with topsoil, the sowing of rice and corn is carried out after curing 2 weeks;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as A-6 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as B-6 group.
Embodiment 7
The composition and parts by weight of 7 composite material of the embodiment of the present invention are as follows:10 parts by weight of Paris white, magnesia powder
10 parts by weight, 50 parts by weight of humus.
The application method of 7 composite material of the embodiment of the present invention is as follows:
Step 1:Before crop-planting, repair materials are uniformly applied in soil according to 300kg/ mus of applied amount, and
It is mixed with topsoil, the sowing of rice and corn is carried out after curing 2 weeks;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as A-7 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as B-7 group.
Embodiment 8
The composition and parts by weight of 8 composite material of the embodiment of the present invention are as follows:10 parts by weight of Paris white, magnesia powder
10 parts by weight, 30 parts by weight of double superhosphate.
The application method of 8 composite material of the embodiment of the present invention is as follows:
Step 1:Before crop-planting, repair materials are uniformly applied in soil according to 400kg/ mus of applied amount, and
It is mixed with topsoil, the sowing of rice and corn is carried out after curing 2 weeks;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as A-8 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as B-8 group.
Embodiment 9
The composition and parts by weight of 9 composite material of the embodiment of the present invention are as follows:10 parts by weight of magnesium powder, 30 weight of calcium phosphate
Part, 50 parts by weight of humus.
The application method of 9 composite material of the embodiment of the present invention is as follows:
Step 1:Before crop-planting, repair materials are uniformly applied in soil according to 400kg/ mus of applied amount, and
It is mixed with topsoil, the sowing of rice and corn is carried out after curing 2 weeks;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as A-9 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as B-9 group.
Embodiment 10
The composition and parts by weight of 10 composite material of the embodiment of the present invention are as follows:10 parts by weight of Paris white, humus
50 parts by weight.
The application method of 10 composite material of the embodiment of the present invention is as follows:
Step 1:Before crop-planting, repair materials are uniformly applied in soil according to 500kg/ mus of applied amount, and
It is mixed with topsoil, the sowing of rice and corn is carried out after curing 2 weeks;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as A-10 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as B-10 group.
Reference examples
Reference examples of the present invention do not add composite material, and implantation methods are as follows:
Step 1:Carry out the sowing of rice and corn;
Step 2:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as CK-A-0 group;
Step 3:After the completion of collection, crop sowing is carried out again;
Step 4:In rice and after corn growth 3 months, crop kernel collection is carried out, standard is denoted as CK-B-0 group.
The crop kernel that embodiment 1-10 and reference examples are collected into carries out content of beary metal detection, obtains the results list such as
Under:
1 embodiment 1-10 of table and the reference examples first season collect crop kernel content of beary metal
2 embodiment 1-10 of table and the reference examples second season collect crop kernel content of beary metal
Nd refers to and does not detect in upper table.
The embodiment of the present invention 1 is processing progress first season plantation on soil through composite material, and harvest rice yield is about
600kg/ mus, compared to the rice yield that the reference examples first season only has 500kg/ mus, volume increase reaches 20%, and seed Cd and Pb contain
Amount can meet food hygienic standard, can normally be sold.In addition, as shown in Table 1,1-5 of the embodiment of the present invention is through compound
Material processing carries out rice and corn planting, content of beary metal and reference examples phase in the crop kernel that the first season receives after crossing soil
Than being decreased significantly, the A-5 group of charcoal and organic fertilizer is especially added, can effectively contain plant to the effective of heavy metal
Absorb, it is ensured that the crop kernel content of beary metal of plant growth complies with standard, make the soil of Cd, Cu and Pb combined pollution be not required to through
Safe production plantation can be carried out by crossing repair process, effectively improve the utilization efficiency in soil.
Shown in table 2 as above, the efficiency time of composite material of the embodiment of the present invention is long, compound after carrying out second season plantation
Material remains to effectively contain absorption of the rice to the absorption and corn of Pb in soil to Cu in soil, it is ensured that the work of second season harvest
Object seed meets food hygienic standard, can be sold safely, to reduce cost needed for physical norm for soils produces.
Finally it should be noted that the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, to the greatest extent
Invention is explained in detail referring to above-described embodiment for pipe, it should be understood by a person of ordinary skill in the art that technology
Personnel read present specification after still can with modifications or equivalent substitutions are made to specific embodiments of the invention, but this
A little modifications are changed within all without departing from the present patent application accompanying claims protection scope.
Claims (10)
1. a kind of composite material suitable for heavy-metal composite pollution farmland safe utilization, which is characterized in that the composite material
Composition and parts by weight it is as follows:Paris white 10-20 parts by weight, magnesium powder 5-10 parts by weight, phosphate 30-50 parts by weight, humic
Matter 40-60 parts by weight.
2. the composite material according to claim 1 suitable for heavy-metal composite pollution farmland safe utilization, feature exist
In the phosphate is selected from one of calcium phosphate, double superhosphate, ammonium dihydrogen phosphate or a variety of.
3. the composite material according to claim 1 suitable for heavy-metal composite pollution farmland safe utilization, feature exist
In the magnesium powder is magnesia powder.
4. the composite material according to claim 1 suitable for heavy-metal composite pollution farmland safe utilization, feature exist
In the composite material further includes charcoal 5-20 parts by weight.
5. the composite material according to claim 4 suitable for heavy-metal composite pollution farmland safe utilization, feature exist
In the charcoal is selected from one of rice straw charcoal, eucalyptus sawdust charcoal, cow dung charcoal or a variety of.
6. the composite material according to claim 1 suitable for heavy-metal composite pollution farmland safe utilization, feature exist
In the composite material further includes organic fertilizer 5-30 parts by weight.
7. the composite material according to claim 6 suitable for heavy-metal composite pollution farmland safe utilization, feature exist
In the organic fertilizer is biological organic fertilizer.
8. a kind of application method of the composite material as described in claim 1-7, which is characterized in that the application method is as follows:
Before crop-planting, repair materials are uniformly applied to the compound dirt of Cd, Cu and Pb according to 250-500kg/ mus of applied amount
It contaminates in soil, and is mixed with topsoil, curing carried out plant seeding after 2-6 weeks.
9. the application method of composite material as claimed in claim 8, which is characterized in that the application ratio of the composite material is
300kg/ mus.
10. the application method of composite material as claimed in claim 8, which is characterized in that the long-term cropping is selected from rice, corn
One of or it is a variety of.
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CN201810894529.0A CN108913153A (en) | 2018-08-08 | 2018-08-08 | A kind of composite material suitable for heavy-metal composite pollution farmland safe utilization |
CN201910246282.6A CN110129063B (en) | 2018-08-08 | 2019-03-29 | Composite material suitable for safe utilization of heavy metal combined pollution farmland |
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CN201810894529.0A CN108913153A (en) | 2018-08-08 | 2018-08-08 | A kind of composite material suitable for heavy-metal composite pollution farmland safe utilization |
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CN201910246282.6A Active CN110129063B (en) | 2018-08-08 | 2019-03-29 | Composite material suitable for safe utilization of heavy metal combined pollution farmland |
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CN110129060A (en) * | 2019-05-20 | 2019-08-16 | 浙江省农业科学院 | A kind of charcoal base composite passivant that content of beary metal in Chinese cabbage is effectively reduced and its preparation and method of administration |
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CN110721995B (en) * | 2019-09-23 | 2020-10-27 | 云南中钛科技有限公司 | Remediation method for heavy metal contaminated soil |
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CA2137996C (en) * | 1994-11-15 | 2007-10-16 | Rikkert J. Vos | Treatment process for contaminated waste |
JP2009013037A (en) * | 2007-07-09 | 2009-01-22 | Tokyo Institute Of Technology | Cement composition and its manufacturing method |
CN103013529A (en) * | 2012-01-04 | 2013-04-03 | 清华大学 | Soil improvement agent and processing method thereof |
CN104338741A (en) * | 2013-07-23 | 2015-02-11 | 上海环垦生态科技有限公司 | Heavy metal polluted soil repairing agent with high content of biocarbon and humus and application method thereof |
CN105583223B (en) * | 2016-02-04 | 2018-08-07 | 深圳润康生态环境股份有限公司 | A kind of combined contamination soil renovation agent and application |
CN106190155A (en) * | 2016-07-16 | 2016-12-07 | 襄汾县科农种植专业合作社 | A kind of conditioner of heavy-metal contaminated soil |
CN106495939A (en) * | 2016-10-14 | 2017-03-15 | 上海诺同农业科技有限公司 | Heavy metal-polluted soil renovation agent, preparation method and application |
CN107286943B (en) * | 2017-06-29 | 2021-02-26 | 中国农业科学院农业环境与可持续发展研究所 | Cadmium passivator with soil improvement function and production method thereof |
CN107652981B (en) * | 2017-09-13 | 2020-07-14 | 辽宁大学 | Composite passivator for reducing cadmium pollution of rape field soil and preparation method and application thereof |
CN107695091A (en) * | 2017-09-21 | 2018-02-16 | 北京润鸣环境科技有限公司 | A kind of soil-repairing agent of Cd-polluted farmland and its production and use |
CN107879857A (en) * | 2017-12-01 | 2018-04-06 | 成都薇诺娜生物科技有限公司 | A kind of preparation method of organo-mineral complexing soil conditioner |
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CN110129060A (en) * | 2019-05-20 | 2019-08-16 | 浙江省农业科学院 | A kind of charcoal base composite passivant that content of beary metal in Chinese cabbage is effectively reduced and its preparation and method of administration |
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