CN106590673A - Soil conditioner for repairing heavy metal polluted farmland and production method of same - Google Patents
Soil conditioner for repairing heavy metal polluted farmland and production method of same Download PDFInfo
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- CN106590673A CN106590673A CN201611025915.3A CN201611025915A CN106590673A CN 106590673 A CN106590673 A CN 106590673A CN 201611025915 A CN201611025915 A CN 201611025915A CN 106590673 A CN106590673 A CN 106590673A
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- 239000003516 soil conditioner Substances 0.000 title claims abstract description 55
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229920000858 Cyclodextrin Polymers 0.000 claims abstract description 20
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 19
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 18
- 241001494479 Pecora Species 0.000 claims abstract description 17
- 239000011707 mineral Substances 0.000 claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000005469 granulation Methods 0.000 claims abstract description 6
- 230000003179 granulation Effects 0.000 claims abstract description 6
- 239000003610 charcoal Substances 0.000 claims description 89
- 239000000203 mixture Substances 0.000 claims description 31
- 238000004227 thermal cracking Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 15
- 230000008439 repair process Effects 0.000 claims description 13
- 235000009025 Carya illinoensis Nutrition 0.000 claims description 10
- 244000068645 Carya illinoensis Species 0.000 claims description 9
- 239000011261 inert gas Substances 0.000 claims description 7
- 230000003750 conditioning effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 238000005067 remediation Methods 0.000 claims description 3
- 241001453450 Carya illinoinensis Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 abstract description 15
- 235000009566 rice Nutrition 0.000 abstract description 13
- 239000000126 substance Substances 0.000 abstract description 5
- 240000007594 Oryza sativa Species 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 210000003608 fece Anatomy 0.000 abstract description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 2
- 240000004875 Carya cathayensis Species 0.000 abstract 2
- 235000005663 Carya cathayensis Nutrition 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 238000002360 preparation method Methods 0.000 abstract 2
- 229920001661 Chitosan Polymers 0.000 abstract 1
- 238000001354 calcination Methods 0.000 abstract 1
- 238000010335 hydrothermal treatment Methods 0.000 abstract 1
- 239000010871 livestock manure Substances 0.000 abstract 1
- 241000209094 Oryza Species 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 229910052793 cadmium Inorganic materials 0.000 description 8
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 8
- 235000015097 nutrients Nutrition 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 4
- 240000003183 Manihot esculenta Species 0.000 description 3
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 235000021329 brown rice Nutrition 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000035558 fertility Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003864 humus Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 231100000783 metal toxicity Toxicity 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000003895 organic fertilizer Substances 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000009418 renovation Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 230000004720 fertilization Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- -1 potassium sulfate compound Chemical class 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000000582 semen Anatomy 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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
-
- 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
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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)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention belongs to the technical field of pollution repairing and relates to a soil conditioner for repairing heavy metal polluted farmland and a production method of same. The soil conditioner includes biochar, minerals and cyclodextrin. The production method includes the steps of: (A) preparation of the biochar: calcining carya cathayensis peel carbon to obtain pyrolyzed biochar and performing high-pressure hydrothermal treatment to the carya cathayensis peel carbon to obtain hydrothermal biochar, and mixing the pyrolyzed biochar and the hydrothermal biochar to obtain the biochar; (B) preparation of the minerals: uniformly diatomite powder and chitosan according to the mass ratio of 3:1 to prepare a diatomite composite; (C) blending: uniformly mixing the pyrolyzed biochar, the hydrothermal biochar, the diatomite composite and sheep manure to prepare the soil repairing agent; and (D) granulation: mixing the soil repairing agent with cyclodextrin and performing granulation to obtain the soil conditioner. The soil conditioner, when being used for rice farmland, is economical and effective, allows in-situ repairing and has no addition of chemical substances.
Description
Technical field
The invention belongs to pollution remediation technology field, be related to it is a kind of repair heavy metals in farmland contaminated soil conditioner and its
Manufacture method.
Background technology
By long-term sewage irrigation, Term Fertilization is improper the problems such as, Farmland in China soil is slight, and heavy metal pollution face extremely extensively accounts for
Pollution 80%, wherein again exceeded at most with cadmium element.Therefore, Chinese soil pollution control is shouldered heavy responsibilities, large area agricultural land soil
Needs are repaired while continue to produce, this requires not only to need to do crop varieties selection and Farming System Reform, with greater need for
The application of heavy metal-polluted soil based technique for in-situ remediation.With soil physico-chemical property, and the soil with heavy metal deactivation function can be improved
Earth conditioner is the novel green means of production for meeting current demand agriculture forestry planting.Soil conditioner is by agricultural water-loss reducer and richness
Organic substance containing organic matter, humic acid is primary raw material, is aided with bioactive ingredients and nutrient composition, and Jing scientific technologies add
The product of work, has highly significant " water conservation, weight gaining, ventilative " three big soil conditioning performances, is the new green of agriculture forestry planting
The color means of production, but existing soil conditioning agent prescription is complicated, complex manufacturing.
As Chinese patent literature discloses a kind of high-alkali soil conditioner [application number：201410577342.X], the soil
Conditioner by：Humus, manioc waste, ammonium sulfate, sodium carbonate, fermenting agent composition, it is a kind of high-alkali that the program additionally provides offer
The production method of soil conditioner, first by manioc waste, fermenting agent mixed stack 30～60 days, threw per two days and turns over once, then
The manioc waste that Jing is banked up is abundant with humus, potassium sulfate compound fertilizer, ammonium hydrogen carbonate, sodium carbonate with the mixture of fermenting agent
It is broken to mix and sieve.The sample morphology of production method production of the present invention is adopted for grey-brown powder, the content of organic matter >=
30%, total nutrient >=3%, moisture≤10%, pH value is between 6～8.Apply this product and can adjust soil acidity or alkalinity,
The crumb structure of soil can be improved again, make the effectiveness of soil nutrient keep optimum, so as to be conducive to crop to put down nutrient
Weighing apparatus is absorbed, and is strengthened crop disease-resistant, drought-resistant ability, is increased substantially the yield and quality of crops.
But such scheme does not solve the problems, such as that heavy metal in soil pollutes, and complex process, production cost is high.
The content of the invention
The purpose of the present invention is for the problems referred to above, there is provided a kind of to repair heavy metals in farmland contaminated soil conditioner.
It is a further object of the present invention to provide a kind of manufacture method for repairing heavy metals in farmland contaminated soil conditioner.
To reach above-mentioned purpose, following technical proposal is present invention employs：It is a kind of to repair heavy metals in farmland contaminated soil
Conditioner, this soil conditioner include charcoal, mineral and cyclodextrin.
In above-mentioned reparation heavy metals in farmland contaminated soil conditioner, described charcoal includes thermal cracking charcoal
With hydro-thermal charcoal, described mineral includes diatomite composition.
In above-mentioned reparation heavy metals in farmland contaminated soil conditioner, including the component of following mass fraction：
In above-mentioned reparation heavy metals in farmland contaminated soil conditioner, also including the sheep stool that mass fraction is 10 parts.
In above-mentioned reparation heavy metals in farmland contaminated soil conditioner, including the component of following mass fraction：
In above-mentioned reparation heavy metals in farmland contaminated soil conditioner, described diatomite composition is by diatomite in powder
End and shitosan in mass ratio 3:1 mixes.
In above-mentioned reparation heavy metals in farmland contaminated soil conditioner, described thermal cracking charcoal is to use Semen Caryae Cathayensis
Pu shell charcoal is calcined under 450-600 DEG C, inert gas conditions and is obtained.
In above-mentioned reparation heavy metals in farmland contaminated soil conditioner, described hydro-thermal charcoal is in 180-240
Obtain under DEG C high pressure hydrothermal condition.
The basic chemical property of charcoal obtained in 1 said method of table
| N (%) | C (%) | H (%) | S (%) | |
| Pyrolysis charcoal | 1.01 | 69.02 | 3.11 | 0.13 |
| Hydro-thermal charcoal | 1.05 | 55.46 | 4.66 | 0.15 |
A kind of manufacture method for repairing heavy metals in farmland contaminated soil conditioner, comprises the following steps：
It is prepared by A, charcoal：Pecan shell charcoal is calcined under 450-600 DEG C, inert gas conditions and obtains thermal cracking life
Thing charcoal, pecan shell charcoal obtain hydro-thermal charcoal under 180-240 DEG C of high pressure hydrothermal condition, by thermal cracking charcoal and water
Hot charcoal is mixed to get charcoal；
It is prepared by B, mineral：By diatomite powder and shitosan in mass ratio 3:1 mix homogeneously, makes composite diatomite
Thing, as mineral；
C, batch mixing：By thermal cracking charcoal, hydro-thermal charcoal, diatomite composition and sheep stool mix homogeneously, soil is obtained
Renovation agent；
D, granulation：Soil-repairing agent and cyclodextrin are mixed, pelletize obtains the soil with heavy metal pollution of soil function
Conditioner.
In the manufacture method of above-mentioned reparation heavy metals in farmland contaminated soil conditioner, described thermal cracking is biological
The mass fraction of charcoal, hydro-thermal charcoal, diatomite composition, sheep stool and cyclodextrin is followed successively by：30-40 parts, 20-30 parts, 20-30
Part, 10 parts and 1-2 parts.
Compared with prior art, it is an advantage of the current invention that：
Charcoal, mineral, three class material of cyclodextrin are combined by this soil conditioner, on the one hand biological using pyrolysis
The absorption property of charcoal and inorganic mineral diatomite composition, heavy metal in soil ion is fixed, and prevents which from passing through leaching
With footpath stream migration；On the other hand using the water-retaining property of hydro-thermal charcoal, thermal cracking charcoal is improved with diatomaceous absorption property
The retain water and nutrients and soil porosity of soil.On the one hand sheep stool is natural green organic fertilizer, and N fertilizer contents are high；On the other hand then
Increase viscosity, be conducive to pelletize, so as to reducing Index of Heavy Metal Toxicity in Soil, increasing the gas permeability of soil and preservation capacity of water and fertility, improve fertilizer
Material and efficiency of water application.
The rice field processed by this soil conditioner have it is economical, effectively, can in-situ immobilization, excellent without chemical substance addition etc.
Point.
Specific embodiment
In following embodiments, reagent used, if no special instructions, can be commercially available from routine biochemistry reagent shop.With
Quantitative data in lower embodiment, is respectively provided with three repetitions and tests, results averaged.
Embodiment 1
It is a kind of to repair heavy metals in farmland contaminated soil conditioner, including thermal cracking charcoal 30kg, hydro-thermal charcoal
20kg, diatomite composition 20kg and cyclodextrin 1kg.
In the present embodiment, diatomite composition is by diatomite powder and shitosan in mass ratio 3:1 mixes, thermal cracking
Charcoal is to be calcined to obtain with pecan shell charcoal under 450-600 DEG C, inert gas conditions, and hydro-thermal charcoal is in 180-
Obtain under 240 DEG C of high pressure hydrothermal conditions.
Embodiment 2
The present embodiment is substantially the same manner as Example 1, and difference is that this soil conditioner includes thermal cracking charcoal 40
Part, 30 parts of hydro-thermal charcoal, 30 parts of diatomite composition and 2 parts of cyclodextrin.
Embodiment 3
The present embodiment is substantially the same manner as Example 1, and difference is that this soil conditioner includes thermal cracking charcoal
35kg, hydro-thermal charcoal 25kg, diatomite composition 25kg, sheep stool 10kg and cyclodextrin 1.5kg.The sheep stool of the present embodiment is aqueous
Measure as 5-7%.
Embodiment 4
The present embodiment is substantially the same manner as Example 3, and difference is that this soil conditioner includes thermal cracking charcoal
2 parts of 40kg, hydro-thermal charcoal 30kg, diatomite composition 30kg, sheep stool 10kg and cyclodextrin.
Embodiment 5
Present embodiments provide a kind of manufacture method for repairing heavy metals in farmland contaminated soil conditioner, including following step
Suddenly：
It is prepared by A, charcoal：Pecan shell charcoal is calcined under 450-600 DEG C, inert gas conditions and obtains thermal cracking life
Thing charcoal, pecan shell charcoal obtain hydro-thermal charcoal under 180-240 DEG C of high pressure hydrothermal condition, by thermal cracking charcoal and water
Hot charcoal is mixed to get charcoal；
It is prepared by B, mineral：By diatomite powder and shitosan in mass ratio 1:2 use mixer mix homogeneously, make diatom
Native complex, as mineral, it is standby；
C, batch mixing：By thermal cracking charcoal, hydro-thermal charcoal and diatomite composition mixer mix homogeneously, soil is obtained
Earth renovation agent；
D, granulation：Soil-repairing agent and cyclodextrin are mixed, is obtained with heavy metal pollution of soil work(with granulator pelletize
The soil conditioner of energy.
Preferred version, in step C and D, component proportion is：Thermal cracking charcoal 30kg, hydro-thermal charcoal 20kg, diatom
Native complex 20kg and cyclodextrin 1kg.
Embodiment 6
The present embodiment is substantially the same manner as Example 5, and difference is, in step C and D, component proportion is：Thermal cracking
2 parts of 40 parts of charcoal, 30 parts of hydro-thermal charcoal, 30 parts of diatomite composition and cyclodextrin.
Embodiment 7
Present embodiments provide a kind of manufacture method for repairing heavy metals in farmland contaminated soil conditioner, including following step
Suddenly：
It is prepared by A, charcoal：Pecan shell charcoal is calcined under 450-600 DEG C, inert gas conditions and obtains thermal cracking life
Thing charcoal, pecan shell charcoal obtain hydro-thermal charcoal under 180-240 DEG C of high pressure hydrothermal condition, by thermal cracking charcoal and water
Hot charcoal is mixed to get charcoal；
It is prepared by B, mineral：By diatomite powder and shitosan in mass ratio 3:1 uses mixer mix homogeneously, makes diatom
Native complex, as mineral, it is standby；
C, batch mixing：By thermal cracking charcoal, hydro-thermal charcoal, diatomite composition and sheep stool mixer mix homogeneously,
Obtain soil-repairing agent；
D, granulation：Soil-repairing agent and cyclodextrin are mixed, is obtained with heavy metal pollution of soil work(with granulator pelletize
The soil conditioner of energy.
Preferred version, in step C and D, component proportion is：Thermal cracking charcoal 35kg, hydro-thermal charcoal 25kg, diatom
Native complex 25kg, sheep stool 10kg and cyclodextrin 1.5kg.The sheep stool water content of the present embodiment is 5-7%.
In the present embodiment, in step D, the particle diameter of soil conditioner is 1-5mm, preferably 2mm.
Charcoal, mineral, three class material of cyclodextrin are combined by this soil conditioner, are on the one hand given birth to using thermal cracking
The absorption property of thing charcoal and inorganic mineral diatomite composition, heavy metal in soil ion is fixed, and prevents which from passing through to drench
Molten and footpath stream migration, plays a part of metal passivation.On the other hand using the water-retaining property of hydro-thermal charcoal, thermal cracking charcoal with
Diatomaceous absorption property improves the retain water and nutrients and soil porosity of soil.On the one hand sheep stool is natural green organic fertilizer, N
Fertile content is high.On the other hand then increase viscosity, be conducive to pelletize, so as to reducing Index of Heavy Metal Toxicity in Soil, increasing the gas permeability of soil
With preservation capacity of water and fertility, fertilizer and efficiency of water application are improved.
Embodiment 8
The present embodiment is substantially the same manner as Example 7, and difference is, in step C and D, thermal cracking charcoal 40kg,
2 parts of hydro-thermal charcoal 30kg, diatomite composition 30kg, sheep stool 10kg and cyclodextrin.
Application examples 1
1. field experiment design
Select 4 pieces of adjacent rice fields, cadmium content in 1ppm or so, the average 300m of area2/ block.Each field divides two cells
Block, respectively compares and applies 1% soil conditioner, and rice variety is that middle Zhejiang is excellent No. 1.The soil conditioner in 4 pieces of adjacent rice fields
The soil conditioner of embodiment 5-8 is corresponded to respectively.
Every mu of 1t of soil conditioner is applied before rice growing, is mixed with soil, rice transplanting, harvesting, collection 0-10cm soil,
Rice plant, analysis soil, Cd concentration of brown rice.
2. experimental result
Cadmium content is analyzed
| Cadmium rate of descent | Matched group | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| Soil (%) | 0.6 | 13.1 | 14.4 | 32.9 | 29.5 |
| Cadmium content | Matched group | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| Rice (ppm) | 0.65 | 0.56 | 0.56 | 0.43 | 0.45 |
As seen from the above table, by the soil and rice of the process of soil conditioner, the cadmium in the cadmium content and rice of soil
Content is decreased obviously, and especially decline of the soil conditioner of embodiment 7-8 to cadmium content plays a significant role, it is known that sheep stool exists
To having facilitation on Cd uptake, imitate with synergistic sorption with thermal cracking charcoal and inorganic mineral diatomite composition
Really, so as to improving absorption property.
Excellent No. 1 rice yield in middle Zhejiang meansigma methodss difference under matched group and the process with the soil conditioner of embodiment 5-8
For 441kg/ mus and 483kg/ mus, soil conditioner is applied in pollution rice field has facilitation to paddy growth, can dramatically increase water
Rice effectively divides evil number, improves yield of brown rice (improve 22.9% than control), also dramatically increases Oryza glutinosa mass of 1000 kernel.Research shows to adjust
Under reason agent is processed, by increasing the impact that effectively point evil is produced to yield, higher than by increasing shadow of the Oryza glutinosa mass of 1000 kernel to yield
Ring.
Specific embodiment described herein is only explanation for example spiritual to the present invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (10)
1. it is a kind of to repair heavy metals in farmland contaminated soil conditioner, it is characterised in that this soil conditioner includes charcoal, ore deposit
Material and cyclodextrin.
2. it is according to claim 1 to repair heavy metals in farmland contaminated soil conditioner, it is characterised in that described biology
Charcoal bag includes thermal cracking charcoal and hydro-thermal charcoal, and described mineral includes diatomite composition.
3. it is according to claim 2 to repair heavy metals in farmland contaminated soil conditioner, it is characterised in that this soil conditioning
Agent includes the component of following mass fraction：
4. it is according to claim 3 to repair heavy metals in farmland contaminated soil conditioner, it is characterised in that this soil conditioning
Agent is also including the sheep stool that mass fraction is 10 parts.
5. it is according to claim 4 to repair heavy metals in farmland contaminated soil conditioner, it is characterised in that this soil conditioning
Agent includes the component of following mass fraction：
6. it is according to claim 2 to repair heavy metals in farmland contaminated soil conditioner, it is characterised in that described diatom
Native complex is by diatomite powder and shitosan in mass ratio 3:1 mixes.
7. it is according to claim 2 to repair heavy metals in farmland contaminated soil conditioner, it is characterised in that described hot tearing
Solution charcoal is to be calcined to obtain with pecan shell charcoal under 450-600 DEG C, inert gas conditions.
8. it is according to claim 2 to repair heavy metals in farmland contaminated soil conditioner, it is characterised in that described hydro-thermal
Charcoal is obtained under 180-240 DEG C of high pressure hydrothermal condition.
9. a kind of manufacture method for repairing heavy metals in farmland contaminated soil conditioner, comprises the following steps：
It is prepared by A, charcoal：Pecan shell charcoal is calcined under 450-600 DEG C, inert gas conditions and obtains thermal cracking charcoal,
Pecan shell charcoal obtains hydro-thermal charcoal under 180-240 DEG C of high pressure hydrothermal condition, will be thermal cracking charcoal and hydro-thermal biological
Charcoal is mixed to get charcoal；
It is prepared by B, mineral：By diatomite powder and shitosan in mass ratio 3:1 mix homogeneously, makes diatomite composition, i.e.,
For mineral；
C, batch mixing：By thermal cracking charcoal, hydro-thermal charcoal, diatomite composition and sheep stool mix homogeneously, soil remediation is obtained
Agent；
D, granulation：Soil-repairing agent and cyclodextrin are mixed, pelletize obtains the soil conditioning with heavy metal pollution of soil function
Agent.
10. the manufacture method for repairing heavy metals in farmland contaminated soil conditioner according to claim 9, its feature exists
In the mass fraction of described thermal cracking charcoal, hydro-thermal charcoal, diatomite composition, sheep stool and cyclodextrin is followed successively by：
30-40 parts, 20-30 parts, 20-30 parts, 10 parts and 1-2 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611025915.3A CN106590673B (en) | 2016-11-22 | 2016-11-22 | Soil conditioner for repairing heavy metal pollution of farmland and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611025915.3A CN106590673B (en) | 2016-11-22 | 2016-11-22 | Soil conditioner for repairing heavy metal pollution of farmland and preparation method thereof |
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| Publication Number | Publication Date |
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| CN106590673B CN106590673B (en) | 2020-06-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108795437A (en) * | 2018-03-27 | 2018-11-13 | 和和乐和（天津）环境科技有限公司 | A kind of soil remediation complexing agent based on maltodextrin |
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| CN110144225A (en) * | 2019-06-05 | 2019-08-20 | 浙江大学 | A kind of composite soil renovation agent and its preparation method and application |
| CN110144225B (en) * | 2019-06-05 | 2021-01-01 | 浙江大学 | Composite soil remediation agent and preparation method and application thereof |
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| CN113664032A (en) * | 2021-08-19 | 2021-11-19 | 郑州轻工业大学 | Heavy metal contaminated soil remediation method by mixing biochar |
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