CN106316686A - Soil remediation agent and preparation method thereof - Google Patents
Soil remediation agent and preparation method thereof Download PDFInfo
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- CN106316686A CN106316686A CN201610699193.3A CN201610699193A CN106316686A CN 106316686 A CN106316686 A CN 106316686A CN 201610699193 A CN201610699193 A CN 201610699193A CN 106316686 A CN106316686 A CN 106316686A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B17/00—Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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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)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a soil remediation agent. The soil remediation agent comprises, by weight, 8-12 parts of hydrated lime, 30-50 parts of limestone, 40-60 parts of bentonite, 5-7 parts of sepiolite, 5-10 parts of biological charcoal, 2-3 parts of diethylenetriamine pentaacetic acid, 2-3 parts of sodium dimercaptosulphonate, 3-5 parts of sodium lignosulfonate, 1-3 parts of cysteine, 1-1.8 parts of sodium potassium tartrate tetrahydrate, 1-1.5 parts of phosphate ore and 0-0.5 part of sodium sulfide. A preparation method of the soil remediation agent includes the steps of firstly, weighing the phosphate ore, the sepiolite and the biological charcoal, and grinding into powder; secondly, adding the cysteine, the sodium potassium tartrate tetrahydrate and the sodium sulfide into the ground powder, and stirring; thirdly, continuously adding the rest of substances, and mixing. The preparation method is simple and low in cost, and the prepared soil remediation agent can lower the heavy metal activity in soil, improve the soil, increase soil fertility and increase crop yield.
Description
Technical field
The invention belongs to soil pollution recovery technique field, be specifically related to a kind of soil-repairing agent and preparation method thereof.
Background technology
" whole nation Soil Pollution Investigation publication " display announced for 2014 according to Environmental Protection Department and Ministry of Land and Resources: complete
State's soil environmental aspect totally allows of no optimist, and some areas soil pollution is heavier, and arable soil environmental quality causes anxiety, and industry and mining are given up
Abandon ground soil environment outstanding problem.The human activity such as industry and mining, agricultural and Environmental Background Values of Soils height are to cause soil pollution
Or the main cause exceeded standard.The whole nation total exceeding standard rate of soil is 16.1%, the most slightly, slightly, moderate and serious pollution point position ratio
Example is respectively 11.2%, 2.3%, 1.5% and 1.1%.Pollution type is based on inorganic type, and organic type takes second place, compound pollution proportion
Less, inorganic pollution exceed standard a figure place account for the whole nation super punctuation bit 82.8%.
The most universal pollution modes is heavy metal pollution, and major pollutants are cadmium, nickel, copper, arsenic, hydrargyrum, lead etc..Cause weight
The reason of metallic pollution has a lot, is mainly mining, metal smelt, electroplating industry, chemical industry, intermetallic composite coating, electron trade and gives up
After the fields such as old electrical equipment recovery produce and discharge in heavy metal contaminants entrance surface water, subsoil water and air, these heavy metals
The most finally come together in soil, cause heavy metal in soil too high levels, cause heavy metal pollution of soil, the heavy metal in soil
Human body can be entered by food chain, various human body diseases will be caused when internal heavy metal is accumulated to a certain extent.
At present, the main path of Heavy Metal Pollution Control has two kinds: one is to be removed by pollutant, i.e. depollutes；Another
Plant is to change heavy metal existing forms in soil so that it is fixing, by the activity reduction of pollutant, minimizing moving in soil
Shifting property and bioavailability, i.e. stabilisation.Different control measures and method is created: i.e. engineering is controlled around both approach
Reason measure (method of improving the soil, electrochemical process, flushing complexometry) and agronomy regulation measure (improve pH value, regulation Eh, applying organic manure, from
Sub-antagonism).Using engineering control heavy metal pollution of soil, the soil for polluting weight, area is little has regulation effect substantially, rapidly
Advantage, but, lesser extent big for contaminated area and the wider farmland pollution soil of scope, then need to consume substantial amounts of manpower
And financial resources, and it is easily caused the destruction of Soil structure and the decline of soil fertility.Therefore, a kind of low cost of exploitation, simple, high
Effect, eco-friendly soil-repairing agent are significant.
Summary of the invention
For above-mentioned deficiency of the prior art, the invention provides a kind of soil-repairing agent and preparation method thereof, can drop
Degradation problem under cost height, soil fertility during heavy metal activity in low soil, effectively solution soil remediation.
For achieving the above object, the technical solution adopted for the present invention to solve the technical problems is:
A kind of soil-repairing agent, including the component of following weight portion: Calx 8-12 part, limestone 30-50 part, bentonite 40-
60 parts, meerschaum 5-7 part, charcoal 5-10 part, diethyl pentetic acid 2-3 part, dimercaptopropansulfonate sodium 2-3 part, wooden
Element sodium sulfonate 3-5 part, cysteine 1-3 part, sodium potassium tartrate tetrahydrate 1-1.8 part, rock phosphate in powder 1-1.5 part and sodium sulfide 0-0.5 part.
Further, a kind of soil-repairing agent, including the component of following weight portion: Calx 10 parts, limestone 43 parts, swollen
52 parts of profit soil, meerschaum 6 parts, charcoal 8 parts, diethyl pentetic acid 2 parts, dimercaptopropansulfonate sodium 2 parts, lignin sulfonic acid
4 parts of sodium, Cys2 part, sodium potassium tartrate tetrahydrate 1.6 parts, rock phosphate in powder 1.2 parts and 0.2 part of sodium sulfide.
Further, charcoal is to be prepared by the following method to obtain: the coconut husk that water content is 10-30% is placed in carbonization
In stove, at a temperature of 220-250 DEG C, it is dehydrated deoxygenation processes 80-100min, carbonization 30-at a temperature of then proceeding to 600-650 DEG C
50min, is crushed to the pressed powder that particle diameter is 0.3-0.8mm by carbonizing production after cooling.
Further, rock phosphate in powder is by P2O5The mid low grade phosphate rock that content is below 25%, carbonate content is more than 10%
Stone and P2O5The low-grade phosphate ore stone that content is below 23%, dioxide-containing silica is higher than 25% is by weight for 1:2 mixing gained.
The preparation method of above-mentioned soil-repairing agent, comprises the following steps:
(1) weigh rock phosphate in powder, meerschaum and charcoal by formula, add grinding in ball grinder 3-8min, obtain grounds travel；
(2) in grounds travel, add cysteine, sodium potassium tartrate tetrahydrate and sodium sulfide, be subsequently placed in pusher blender and stir
10-15min；
(3) in step (2) gained mixture, limestone, bentonite, Calx, diethyl pentetic acid, dimercapto are added
Propanesulfonate and sodium lignin sulfonate, be subsequently placed in V-type blender mixing 10-25min, obtain soil-repairing agent.
Soil-repairing agent that the present invention provides and preparation method thereof, has the advantages that
(1) soil-repairing agent that the present invention prepares is with bentonite as primary raw material, by add Calx, limestone, meerschaum,
Charcoal, diethyl pentetic acid, dimercaptopropansulfonate sodium, sodium lignin sulfonate, cysteine, sodium potassium tartrate tetrahydrate, phosphorus ore
Stone and sodium sulfide, by specific composition, the soil-repairing agent that specific content prepares, can effectively reduce the heavy metal in soil
Content, and soil is had certain repair function, provide fertilizer for plant growth to a certain extent, and then improve the product of crop
Amount.
(2) soil-repairing agent that the present invention provides, preparation method is simple, low cost, it is easy to industrialized production, and can use
Big, the lesser extent in contaminated area and the wider farmland pollution soil of scope.
(3) coconut husk, these garbages of low-grade rock phosphate in powder are fully utilized by the present invention, the soil remediation prepared
The advantages such as agent, has repair time short, and consumption is few.
Detailed description of the invention
Embodiment 1
A kind of soil-repairing agent, including the component of following weight portion: Calx 8 parts, limestone 30 parts, bentonite 40 parts, Hai Pao
5 parts of stone, charcoal 5 parts, diethyl pentetic acid 2 parts, dimercaptopropansulfonate sodium 2 parts, sodium lignin sulfonate 3 parts, half Guang ammonia
Acid 1 part, sodium potassium tartrate tetrahydrate 1 part, rock phosphate in powder 1 part and 0.1 part of sodium sulfide；
Wherein charcoal is to be prepared by the following method to obtain: be placed in retort by the coconut husk that water content is 30%, at 250 DEG C
At a temperature of be dehydrated deoxygenation process 100min, at a temperature of then proceeding to 650 DEG C, carbonization 50min, is crushed to carbonizing production after cooling
Particle diameter is the pressed powder of 0.3-0.8mm；
Rock phosphate in powder is by P2O5Content is below 25%, carbonate content is more than 10% mid low grade phosphate rock stone and P2O5Content
Below 23%, the dioxide-containing silica low-grade phosphate ore stone higher than 25% is by weight for 1:2 mixing gained.
The preparation method of above-mentioned soil-repairing agent, comprises the following steps:
(1) weigh rock phosphate in powder, meerschaum and charcoal by formula, add grinding in ball grinder 3-8min, obtain grounds travel；
(2) in grounds travel, add cysteine, sodium potassium tartrate tetrahydrate and sodium sulfide, be subsequently placed in pusher blender and stir
10-15min；
(3) in step (2) gained mixture, limestone, bentonite, Calx, diethyl pentetic acid, dimercapto are added
Propanesulfonate and sodium lignin sulfonate, be subsequently placed in V-type blender mixing 10-25min, obtain soil-repairing agent.
Embodiment 2
A kind of soil-repairing agent, including the component of following weight portion: Calx 12 parts, limestone 50 parts, bentonite 60 parts, Hai Pao
7 parts of stone, charcoal 10 parts, diethyl pentetic acid 3 parts, dimercaptopropansulfonate sodium 3 parts, sodium lignin sulfonate 5 parts, half Guang ammonia
Acid 3 parts, sodium potassium tartrate tetrahydrate 1.8 parts, rock phosphate in powder 1.5 parts, 0.5 part of sodium sulfide；
Wherein charcoal is to be prepared by the following method to obtain: be placed in retort by the coconut husk that water content is 10%, at 220 DEG C
At a temperature of be dehydrated deoxygenation process 80min, at a temperature of then proceeding to 600 DEG C, carbonization 30min, is crushed to grain by carbonizing production after cooling
Footpath is the pressed powder of 0.3-0.8mm；
Rock phosphate in powder is by P2O5Content is below 25%, carbonate content is more than 10% mid low grade phosphate rock stone and P2O5Content
Below 23%, the dioxide-containing silica low-grade phosphate ore stone higher than 25% is by weight for 1:2 mixing gained.
The preparation method of above-mentioned soil-repairing agent, comprises the following steps:
(1) weigh rock phosphate in powder, meerschaum and charcoal by formula, add grinding in ball grinder 3-8min, obtain grounds travel；
(2) in grounds travel, add cysteine, sodium potassium tartrate tetrahydrate and sodium sulfide, be subsequently placed in pusher blender and stir
10-15min；
(3) in step (2) gained mixture, limestone, bentonite, Calx, diethyl pentetic acid, dimercapto are added
Propanesulfonate and sodium lignin sulfonate, be subsequently placed in V-type blender mixing 10-25min, obtain soil-repairing agent.
Embodiment 3
A kind of soil-repairing agent, including the component of following weight portion: Calx 10 parts, limestone 43 parts, bentonite 52 parts, Hai Pao
6 parts of stone, charcoal 8 parts, diethyl pentetic acid 2 parts, dimercaptopropansulfonate sodium 2 parts, sodium lignin sulfonate 4 parts, half Guang ammonia
Acid 2 parts, sodium potassium tartrate tetrahydrate 1.6 parts, rock phosphate in powder 1.2 parts, 0.2 part of sodium sulfide；
Wherein charcoal is to be prepared by the following method to obtain: be placed in retort by the coconut husk that water content is 20%, at 240 DEG C
At a temperature of be dehydrated deoxygenation process 80min, at a temperature of then proceeding to 620 DEG C, carbonization 40min, is crushed to grain by carbonizing production after cooling
Footpath is the pressed powder of 0.3-0.8mm；
Rock phosphate in powder is by P2O5Content is below 25%, carbonate content is more than 10% mid low grade phosphate rock stone and P2O5Content
Below 23%, the dioxide-containing silica low-grade phosphate ore stone higher than 25% is by weight for 1:2 mixing gained.
The preparation method of above-mentioned soil-repairing agent, comprises the following steps:
(1) weigh rock phosphate in powder, meerschaum and charcoal by formula, add grinding in ball grinder 3-8min, obtain grounds travel；
(2) in grounds travel, add cysteine, sodium potassium tartrate tetrahydrate and sodium sulfide, be subsequently placed in pusher blender and stir
10-15min；
(3) in step (2) gained mixture, limestone, bentonite, Calx, diethyl pentetic acid, dimercapto are added
Propanesulfonate and sodium lignin sulfonate, be subsequently placed in V-type blender mixing 10-25min, obtain soil-repairing agent.
Embodiment 4
A kind of soil-repairing agent, including the component of following weight portion: Calx 8 parts, limestone 30 parts, bentonite 40 parts, Hai Pao
5 parts of stone, charcoal 5 parts, diethyl pentetic acid 2 parts, dimercaptopropansulfonate sodium 2 parts, sodium lignin sulfonate 3 parts, half Guang ammonia
Acid 1 part, sodium potassium tartrate tetrahydrate 1 part and rock phosphate in powder 1 part；
Wherein charcoal is to be prepared by the following method to obtain: be placed in retort by the coconut husk that water content is 30%, at 250 DEG C
At a temperature of be dehydrated deoxygenation process 100min, at a temperature of then proceeding to 650 DEG C, carbonization 50min, is crushed to carbonizing production after cooling
Particle diameter is the pressed powder of 0.3-0.8mm；
Rock phosphate in powder is by P2O5Content is below 25%, carbonate content is more than 10% mid low grade phosphate rock stone and P2O5Content
Below 23%, the dioxide-containing silica low-grade phosphate ore stone higher than 25% is by weight for 1:2 mixing gained.
The preparation method of above-mentioned soil-repairing agent, comprises the following steps:
(1) weigh rock phosphate in powder, meerschaum and charcoal by formula, add grinding in ball grinder 3-8min, obtain grounds travel；
(2) in grounds travel, add cysteine and sodium potassium tartrate tetrahydrate, be subsequently placed in pusher blender and stir 10-15min；
(3) in step (2) gained mixture, limestone, bentonite, Calx, diethyl pentetic acid, dimercapto are added
Propanesulfonate and sodium lignin sulfonate, be subsequently placed in V-type blender mixing 10-25min, obtain soil-repairing agent.
Effect experimental
1, the reparative experiment of soil-repairing agent heavy metal contaminated soil
The restorative procedure of soil-repairing agent: dug out by heavy-metal contaminated soil, sends into crusher in crushing, is subsequently adding heavy metal-polluted
The soil-repairing agent of dye soil quality 12%, both are sufficiently mixed, and can spray a small amount of water and make Soil conservation wet in mixed process
Profit, after mixing completely, stands 10 days, i.e. completes to repair.
Detection method: sample the soil after repairing, detection is according to solid waste " Leaching leaching method sulphuric acid nitre
Acid system " (HJ/T299-2007) use turnover oscillator that soil carries out leaching test, and the heavy metal-polluted soil after detection is repaired is dense
Degree with repair before contrast, the results are shown in Table 1:
Before and after table 1 heavy-metal contaminated soil is repaired, heavy metal concentration contrasts
As shown in Table 1, after reparation, the heavy metal concentration in soil substantially reduces, it is seen that the soil-repairing agent that the present invention provides can have
Effect reduces the heavy metal activity in soil, and especially embodiment 3, effect is the most notable.
2, the soil-repairing agent impact on rice yield
Selecting 3 pieces of heavy-metal contaminated soil soil, every piece is divided into 5 parts, has individual matched group, 4 experimental grouies in every piece.
Matched group processing mode: rice cultivation in the usual way, and by local habits fertilization and field management.
Experimental group processing mode: execute the soil-repairing agent of embodiment 1-3 on the basis of matched group respectively, the reparation to soil
Mode is identical with effect experimental 1.
After rice harvesting, rice yield in contrast matched group and experimental group, comparing result is shown in Table 2:
The impact on rice yield of table 2 soil-repairing agent
The soil-repairing agent that the present invention provides can improve soil, increases soil fertility, and then increases crop yield, can by table 2
Knowing, after using the soil-repairing agent of the present invention, rice yield increases considerably, and every mu of effective fringe and Defined daily doses the most substantially carry
High.
Claims (5)
1. a soil-repairing agent, it is characterised in that include the component of following weight portion: Calx 8-12 part, limestone 30-50
Part, bentonite 40-60 part, meerschaum 5-7 part, charcoal 5-10 part, diethyl pentetic acid 2-3 part, dimercaptopropane sulphonate
Sodium 2-3 part, sodium lignin sulfonate 3-5 part, cysteine 1-3 part, sodium potassium tartrate tetrahydrate 1-1.8 part, rock phosphate in powder 1-1.5 part and sulfuration
Sodium 0-0.5 part.
Soil-repairing agent the most according to claim 1, it is characterised in that include the component of following weight portion: Calx 10
Part, limestone 43 parts, bentonite 52 parts, meerschaum 6 parts, charcoal 8 parts, diethyl pentetic acid 2 parts, dimercaptopropane sulphonate
2 parts of sodium, sodium lignin sulfonate 4 parts, Cys2 part, sodium potassium tartrate tetrahydrate 1.6 parts, rock phosphate in powder 1.2 parts and 0.2 part of sodium sulfide.
Soil-repairing agent the most according to claim 1 and 2, it is characterised in that charcoal is to be prepared by the following method
To: the coconut husk that water content is 10-30% is placed in retort, at a temperature of 220-250 DEG C, is dehydrated deoxygenation processes 80-100min,
Then carbonization 30-50min at a temperature of proceeding to 600-650 DEG C, it is consolidating of 0.3-0.8mm that carbonizing production is crushed to after cooling particle diameter
Body powder.
Soil-repairing agent the most according to claim 1 and 2, it is characterised in that rock phosphate in powder is by P2O5Content below 25%,
Carbonate content mid low grade phosphate rock stone more than 10% and P2O5Content below 23%, dioxide-containing silica higher than 25% low
Grade phosphorus mine stone is by weight for 1:2 mixing gained.
5. the preparation method of the soil-repairing agent as described in any one of claim 1-4, it is characterised in that comprise the following steps:
(1) weigh rock phosphate in powder, meerschaum and charcoal by formula, add grinding in ball grinder 3-8min, obtain grounds travel；
(2) in grounds travel, add cysteine, sodium potassium tartrate tetrahydrate and sodium sulfide, be subsequently placed in blender stirring 10-
15min；
(3) in step (2) gained mixture, limestone, bentonite, Calx, diethyl pentetic acid, dimercapto are added
Propanesulfonate and sodium lignin sulfonate, be subsequently placed in blender mixing 10-25min, obtain soil-repairing agent.
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| CN201610699193.3A CN106316686A (en) | 2016-08-22 | 2016-08-22 | Soil remediation agent and preparation method thereof |
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Cited By (8)
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| CN107418587A (en) * | 2017-05-17 | 2017-12-01 | 郭迎庆 | A kind of preparation method of soil heavy metal combined passivator |
| CN108178682A (en) * | 2017-12-29 | 2018-06-19 | 广东大众农业科技股份有限公司 | A kind of biomass carbon soil conditioner of siliceous calcium and magnesium and preparation method thereof |
| CN108424219A (en) * | 2018-04-03 | 2018-08-21 | 共同科技开发有限公司 | A kind of soil remediation organic fertilizer and preparation method and application containing bagasse |
| CN108690624A (en) * | 2018-05-15 | 2018-10-23 | 武汉都市环保工程技术股份有限公司 | A kind of Compound Heavy Metals soil passivator and its preparation method and application |
| CN109054848A (en) * | 2018-07-06 | 2018-12-21 | 北京润鸣环境科技有限公司 | A kind of heavy-metal contaminated soil renovation agent and preparation method thereof and application method |
| CN109181708A (en) * | 2018-09-30 | 2019-01-11 | 芜湖敏美果树研究所 | A kind of Hong Li in July compound fertilizer soil conditioner preparation method |
| CN110205133A (en) * | 2019-06-17 | 2019-09-06 | 常州大学 | It is a kind of for administer heavy metal Cu pollution compound curing agent and application method |
| CN113857227A (en) * | 2021-09-27 | 2021-12-31 | 生态环境部南京环境科学研究所 | Method for restoring heavy metal cadmium farmland soil by using stabilized restoration material |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107418587A (en) * | 2017-05-17 | 2017-12-01 | 郭迎庆 | A kind of preparation method of soil heavy metal combined passivator |
| CN108178682A (en) * | 2017-12-29 | 2018-06-19 | 广东大众农业科技股份有限公司 | A kind of biomass carbon soil conditioner of siliceous calcium and magnesium and preparation method thereof |
| CN108424219A (en) * | 2018-04-03 | 2018-08-21 | 共同科技开发有限公司 | A kind of soil remediation organic fertilizer and preparation method and application containing bagasse |
| CN108690624A (en) * | 2018-05-15 | 2018-10-23 | 武汉都市环保工程技术股份有限公司 | A kind of Compound Heavy Metals soil passivator and its preparation method and application |
| CN109054848A (en) * | 2018-07-06 | 2018-12-21 | 北京润鸣环境科技有限公司 | A kind of heavy-metal contaminated soil renovation agent and preparation method thereof and application method |
| CN109181708A (en) * | 2018-09-30 | 2019-01-11 | 芜湖敏美果树研究所 | A kind of Hong Li in July compound fertilizer soil conditioner preparation method |
| CN110205133A (en) * | 2019-06-17 | 2019-09-06 | 常州大学 | It is a kind of for administer heavy metal Cu pollution compound curing agent and application method |
| CN113857227A (en) * | 2021-09-27 | 2021-12-31 | 生态环境部南京环境科学研究所 | Method for restoring heavy metal cadmium farmland soil by using stabilized restoration material |
| CN113857227B (en) * | 2021-09-27 | 2022-05-13 | 生态环境部南京环境科学研究所 | Method for restoring heavy metal cadmium farmland soil by using stabilized restoring material |
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