CN107502364A - A kind of agricultural land soil cadmium pollution renovation agent and preparation method thereof - Google Patents
A kind of agricultural land soil cadmium pollution renovation agent and preparation method thereof Download PDFInfo
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- CN107502364A CN107502364A CN201710768931.XA CN201710768931A CN107502364A CN 107502364 A CN107502364 A CN 107502364A CN 201710768931 A CN201710768931 A CN 201710768931A CN 107502364 A CN107502364 A CN 107502364A
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- 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
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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
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Abstract
The invention discloses a kind of agricultural land soil cadmium pollution renovation agent and preparation method thereof.The agricultural land soil cadmium pollution renovation agent includes following component：Urea, erythromycin, legume root, stem and leaf shell discarded object powder, nitro humic acid copper, sulphur, EDETATE SODIUM, excrementum pteropi, matrine, Sitosterolum, Radix et Caulis Opuntiae Dillenii extract, fibrous hydroxyapatite, PLA, polyglyceryl fatty acid ester, cyclodextrin sodium sulphate, manioc waste, ground coffee, ε caprolactones.Renovation agent prepared by the present invention can effectively reduce the content of cadmium in agricultural land soil, while can solve the outstanding problem that China's agricultural land soil cadmium pollution is serious, crops cadmium content is exceeded, influences food security.
Description
Technical field
The present invention relates to a kind of soil remediation material, specifically a kind of agricultural land soil cadmium pollution renovation agent and its preparation side
Method.
Background technology
Soil is the basis of agricultural production, and however as the fast development of national economy, the pollutant containing heavy metal passes through
Various approach enter soil, have gradually formed heavy metal pollution of soil.Heavy metal pollution of soil because its pollute it is disguised, long-term
Property and irreversibility and by World Focusing, its not only degenerated soil fertility, reduce crop yield and quality, and agriculture can be triggered
Contamination of products and water resource pollution, and endanger by food chain the life and health of the mankind.
Heavy metal pollution of soil refers to, because the activity of the mankind brings heavy metal in soil into, cause heavy metal in soil to contain
Amount causes the phenomenon of ecological disruption and environmental quality deterioration apparently higher than its Natural Background Values.With population rapid growth, work
Industry scale of agricultural production constantly expands, and the situation of heavy metal pollution of soil is more and more severeer, more and more prominent the problem of initiation,
The serious environmental problem faced as the whole world.Heavy metal pollution does not only result in soil physics, chemistry and biology property
Change, reduce the yield and quality of crops, and human body can be reached by food chain, be directly detrimental to health.
The arable land heavy metal pollution in China is very serious, had 10,000,000 hectares by the arable land of heavy metal pollution, accounts for 1,800,000,000 mu of arable land
More than 8%, about 10,000,000,000 kilograms of grain yield is directly reduced every year.
Cadmium is one of most strong heavy metal element of environment Poisoning, have biogenic migration is strong, be easily absorbed by plants and
The characteristics of accumulation, toxic action can be produced to animals and plants and human body, even Itai-itai diseases, hypertension, kidney function can be caused when serious
The diseases such as energy disorder, hepatic lesion, pulmonary edema.The source of agricultural land soil cadmium pollution is mainly：1) aerosol deposition：Particle is less
Metal aerosol can be conveyed within the specific limits by air-flow, and be settled down；2) sewage irrigation：Irrigation water heavy metal surpasses
Mark, and crop heavy metal has the inspissation of hundred times；3) pollution that sludge composting and chemical fertilizer are brought：Fertilizer contains one in itself
Fixed cadmium, the administration of several years may bring the accumulation of heavy metal.
Traditional heavy-metal contaminated soil Treatment process has chemical leaching method, in-situ solidifying method and phytoremediation etc., this
A little methods respectively have respective merits and demerits.The method of traditional remediating heavy metal soil pollution is as elution method and solidification method etc.
The original structure of soil will be destroyed, can not be planted, and the low cycle length of herbaceous plant remediation efficiency, all it is difficult to adapt to a huge sum of money
The reparation of category pollution crops soil.Therefore, the present invention provides a kind of efficient agricultural land soil cadmium pollution renovation agent and its preparation
Method.
The content of the invention
It is an object of the invention to provide a kind of agricultural land soil cadmium pollution renovation agent and preparation method thereof, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of agricultural land soil cadmium pollution renovation agent, include the component of following parts by weight：Urea 10-20 parts, erythromycin 2-5
Part, legume root, stem and leaf shell discarded object powder 8-15 parts, nitro humic acid copper 2-5 parts, sulphur 1-3 parts, EDETATE SODIUM 2-8
Part, excrementum pteropi 3-9 parts, matrine 2-5 parts, cupreol 4-8 parts, Radix et Caulis Opuntiae Dillenii extract 3-8 parts, fibrous hydroxyapatite 2-
5 parts, PLA 3-5 parts, polyglyceryl fatty acid ester 4-8 parts, cyclodextrin sodium sulphate 3-7 parts, manioc waste 5-11 parts, ground coffee 4-11
Part, 6-caprolactone 2-6 parts.
As the further scheme of the present invention：Include the component of following parts by weight：15 parts of urea, 4 parts of erythromycin, pulse family
12 parts of plant roots cauline leaf shell discarded object powder, 3 parts of nitro humic acid copper, 2 parts of sulphur, 5 parts of EDETATE SODIUM, 6 parts of excrementum pteropi, kuh-seng
4 parts of alkali, 5 parts of cupreol, 7 parts of Radix et Caulis Opuntiae Dillenii extract, 4 parts of fibrous hydroxyapatite, 4 parts of PLA, polyglycerol fatty acid
6 parts of ester, 5 parts of cyclodextrin sodium sulphate, 6 parts of manioc waste, 8 parts of ground coffee, 4 parts of 6-caprolactone.
As the further scheme of the present invention：The legume includes one kind in catechu, clover, clover, radix glycyrrhizae
It is or a variety of.
A kind of preparation method of agricultural land soil cadmium pollution renovation agent, comprises the following steps：
(1) EDETATE SODIUM, polyglyceryl fatty acid ester, urea, erythromycin and matrine are added in agitator, adds 100-
200 parts of water, reaction 5-11h is mixed, mixing speed 50-85r/min, obtains mixed liquor；
(2) by sulphur, manioc waste, ground coffee, excrementum pteropi, Radix et Caulis Opuntiae Dillenii extract, legume root, stem and leaf shell discarded object powder
Mixture, the stirring reaction 5-8h at 100-125 DEG C, is then placed at 258-384 DEG C and forges by end and the mixing of nitro humic acid copper
2-5h is burnt, calcined product is obtained, is ground to obtain mixed-powder；
(3) mixed liquor, mixed-powder, cupreol, fibrous hydroxyapatite, PLA, 6-caprolactone and ring are pasted
Smart sodium sulphate mixes 15-30min at 1-5 DEG C, stands 1-2h, continues to stir 3-5h, gets product.
As the further scheme of the present invention：158 parts of water are added in step (1).
As the further scheme of the present invention：Reaction 8h, mixing speed 65r/min are mixed in step (1).
As the further scheme of the present invention：Step (2) stirring reaction 6h at 115 DEG C, is then placed in 325 by mixture
4h is calcined at DEG C.
As the further scheme of the present invention：Step (3) mixes 20min at 2 DEG C, stands 1.8h, continues to stir
4h。
Compared with prior art, the beneficial effects of the invention are as follows：
Renovation agent prepared by the present invention can effectively reduce the content of cadmium in agricultural land soil, with the extension of incubation time, soil
The content of effective cadmium gradually reduces in earth, can solve that China's agricultural land soil cadmium pollution is serious, crops cadmium content is exceeded, influences food
The outstanding problem of product safety.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Embodiment 1
A kind of agricultural land soil cadmium pollution renovation agent, include the component of following parts by weight：10 parts of urea, 2 parts of erythromycin, beans
8 parts of section's plant roots cauline leaf shell discarded object powder, 2 parts of nitro humic acid copper, 1 part of sulphur, 2 parts of EDETATE SODIUM, 3 parts of excrementum pteropi, hardship
Join 2 parts of alkali, 4 parts of cupreol, 3 parts of Radix et Caulis Opuntiae Dillenii extract, 2 parts of fibrous hydroxyapatite, 3 parts of PLA, polyglycereol fat
4 parts of acid esters, 3 parts of cyclodextrin sodium sulphate, 5 parts of manioc waste, 4 parts of ground coffee, 2 parts of 6-caprolactone.The legume includes catechu.
A kind of preparation method of agricultural land soil cadmium pollution renovation agent, comprises the following steps：(1) EDTA is added in agitator
Disodium, polyglyceryl fatty acid ester, urea, erythromycin and matrine, 100 parts of water are added, mix reaction 5h, mixing speed
50r/min, obtain mixed liquor；(2) by sulphur, manioc waste, ground coffee, excrementum pteropi, Radix et Caulis Opuntiae Dillenii extract, legume root, stem and leaf
Mixture, the stirring reaction 5h at 100 DEG C, is then placed at 258 DEG C and forges by shell discarded object powder and the mixing of nitro humic acid copper
2h is burnt, calcined product is obtained, is ground to obtain mixed-powder；(3) by mixed liquor, mixed-powder, cupreol, fibrous hydroxyl
Base apatite, PLA, 6-caprolactone and cyclodextrin sodium sulphate mix 15min at 1 DEG C, stand 1h, continue to stir 3h,
Get product.
Embodiment 2
A kind of agricultural land soil cadmium pollution renovation agent, include the component of following parts by weight：20 parts of urea, 5 parts of erythromycin, beans
15 parts of section's plant roots cauline leaf shell discarded object powder, 5 parts of nitro humic acid copper, 3 parts of sulphur, 8 parts of EDETATE SODIUM, 9 parts of excrementum pteropi, hardship
Join 5 parts of alkali, 8 parts of cupreol, 8 parts of Radix et Caulis Opuntiae Dillenii extract, 5 parts of fibrous hydroxyapatite, 5 parts of PLA, polyglycereol fat
8 parts of acid esters, 7 parts of cyclodextrin sodium sulphate, 11 parts of manioc waste, 11 parts of ground coffee, 6 parts of 6-caprolactone.The legume includes youngster
Tea, clover.
A kind of preparation method of agricultural land soil cadmium pollution renovation agent, comprises the following steps：(1) EDTA is added in agitator
Disodium, polyglyceryl fatty acid ester, urea, erythromycin and matrine, 200 parts of water are added, mix reaction 11h, mixing speed
85r/min, obtain mixed liquor；(2) by sulphur, manioc waste, ground coffee, excrementum pteropi, Radix et Caulis Opuntiae Dillenii extract, legume root, stem and leaf
Mixture, the stirring reaction 8h at 125 DEG C, is then placed at 384 DEG C and forges by shell discarded object powder and the mixing of nitro humic acid copper
5h is burnt, calcined product is obtained, is ground to obtain mixed-powder；(3) by mixed liquor, mixed-powder, cupreol, fibrous hydroxyl
Base apatite, PLA, 6-caprolactone and cyclodextrin sodium sulphate mix 30min at 5 DEG C, stand 2h, continue to stir 5h,
Get product.
Embodiment 3
A kind of agricultural land soil cadmium pollution renovation agent, include the component of following parts by weight：15 parts of urea, 4 parts of erythromycin, beans
12 parts of section's plant roots cauline leaf shell discarded object powder, 3 parts of nitro humic acid copper, 2 parts of sulphur, 5 parts of EDETATE SODIUM, 6 parts of excrementum pteropi, hardship
Join 4 parts of alkali, 5 parts of cupreol, 7 parts of Radix et Caulis Opuntiae Dillenii extract, 4 parts of fibrous hydroxyapatite, 4 parts of PLA, polyglycereol fat
6 parts of acid esters, 5 parts of cyclodextrin sodium sulphate, 6 parts of manioc waste, 8 parts of ground coffee, 4 parts of 6-caprolactone.The legume include catechu,
Clover, clover.
A kind of preparation method of agricultural land soil cadmium pollution renovation agent, comprises the following steps：(1) EDTA is added in agitator
Disodium, polyglyceryl fatty acid ester, urea, erythromycin and matrine, 158 parts of water are added, mix reaction 8h, mixing speed
65r/min, obtain mixed liquor；(2) by sulphur, manioc waste, ground coffee, excrementum pteropi, Radix et Caulis Opuntiae Dillenii extract, legume root, stem and leaf
Mixture, the stirring reaction 6h at 115 DEG C, is then placed at 325 DEG C and forges by shell discarded object powder and the mixing of nitro humic acid copper
4h is burnt, calcined product is obtained, is ground to obtain mixed-powder；(3) by mixed liquor, mixed-powder, cupreol, fibrous hydroxyl
Base apatite, PLA, 6-caprolactone and cyclodextrin sodium sulphate mix 20min at 2 DEG C, stand 1.8h, continue to stir
4h, get product.
Embodiment 4
A kind of agricultural land soil cadmium pollution renovation agent, include the component of following parts by weight：12 parts of urea, 4 parts of erythromycin, beans
9 parts of section's plant roots cauline leaf shell discarded object powder, 4 parts of nitro humic acid copper, 1.2 parts of sulphur, 7 parts of EDETATE SODIUM, 4 parts of excrementum pteropi,
4.5 parts of matrine, 5.5 parts of cupreol, 7.6 parts of Radix et Caulis Opuntiae Dillenii extract, 2.5 parts of fibrous hydroxyapatite, PLA 4.3
Part, 4.8 parts of polyglyceryl fatty acid ester, 6.7 parts of cyclodextrin sodium sulphate, 6 parts of manioc waste, 10 parts of ground coffee, 3 parts of 6-caprolactone.Institute
Stating legume includes catechu, clover, clover, radix glycyrrhizae.
A kind of preparation method of agricultural land soil cadmium pollution renovation agent, comprises the following steps：(1) EDTA is added in agitator
Disodium, polyglyceryl fatty acid ester, urea, erythromycin and matrine, 115 parts of water are added, mix reaction 10h, mixing speed
55r/min, obtain mixed liquor；(2) by sulphur, manioc waste, ground coffee, excrementum pteropi, Radix et Caulis Opuntiae Dillenii extract, legume root, stem and leaf
Mixture, the stirring reaction 5.8h at 120 DEG C, is then placed at 376 DEG C by shell discarded object powder and the mixing of nitro humic acid copper
2.2h is calcined, calcined product is obtained, is ground to obtain mixed-powder；(3) by mixed liquor, mixed-powder, cupreol, fiber
Shape hydroxyapatite, PLA, 6-caprolactone and cyclodextrin sodium sulphate mix 28min at 4 DEG C, stand 1.3h, continue
4h is stirred, is got product.
Experimental example 1
Test selection：Collecting soil sample fills farmland in certain dirt, and the region uses sewage irrigation containing Cd for a long time.Soil is basic
Property is as follows：PH value 7.65, organic matter 8.51g/kg, full nitrogen 1.48g/kg, available phosphorus 12.74mg/kg, available potassium 101.5mg/
Kg, calcium carbonate 5.14%, full cadmium 22.27mg/kg, effective cadmium 8.59mg/kg.Pedotheque is divided into two parts, experimental group is adopted
The agricultural land soil cadmium pollution renovation agent prepared with embodiment 3 carries out soil treatment, and control group is not added with renovation agent.
Experimental method：After the 200g soil of each processing and renovation agent 50mg are fully mixed, load diameter 150mm training
Support in ware, cultivated in the growth cabinet of 25 DEG C of constant temperature.It is most crop field to add deionized water for the first time and control soil moisture content
Between water-holding capacity 80%.Sample, take altogether 10 times in 0.5d, 1d, 2d, 3d, 4d, 5d, 10d, 20d, 30d, 40d respectively.Every
Soil moisture content is set to be maintained at the 80% of field capacity to not taking sample to carry out moisturizing using gravimetric method after sub-sampling.It will take
Sample air-dries processing in the cool, crosses 3mm aperture sieves, weighs 5.00g samples in 100ml triangular flasks, adds 25mlDTPA extractions
Agent (0.005mol/LDTPA+0.1mol/L triethanolamines+0.01mol/LCaCl2), vibration are filtered after 2 hours, take filtrate, are used
Effective cadmium content in Atomic absorption-graphite furnace method determination sample, measurement result are as shown in table 1.
The measurement result of table 1
| Project | Initial value | 0.5d | 1d | 2d | 3d | 4d | 5d | 10d | 20d | 30d | 40d |
| Control group | 8.79 | 8.76 | 8.74 | 8.74 | 8.70 | 8.73 | 8.71 | 8.71 | 8.72 | 8.74 | 8.77 |
| Embodiment 3 | 8.79 | 4.85 | 4.51 | 4.20 | 3.98 | 3.47 | 2.89 | 1.85 | 1.78 | 1.68 | 1.65 |
As can be seen from Table 1, the renovation agent that prepared by embodiment 3 can effectively reduce the content of effective cadmium in agricultural land soil, and
And with the extension of incubation time, the content of effectively cadmium gradually reduces in soil.Control group and starting value changes are little.
Experimental example 2
It is used as using the soil used in experimental example 1 and carries out pot experiment for examination soil, further verifies renovation agent
Repairing effect.
Pot experiment is pakchoi for studying thing, and native 5kg is filled per basin.It is divided into control group and experimental group；Control group is not applied
Any renovation agent；The renovation agent that experimental group is prepared using the present embodiment 1；Renovation agent usage amount is every basin dosage 3g.Potted plant examination
Test and be repeated 4 times.
Before experiment, basin is filled after 5kg soil and 3g renovation agents are fully mixed, same amount of azophoska is imposed per basin.
After filling basin, watering, soil water content is set to reach the 80% of field capacity, balance live pakchoi after 7 days.It is every after emerging
5 plants of basin final singling.Cultivation management measure is consistent with field management during experiment.
During harvest, pakchoi overground part is harvested, determines its biomass and Cd contents；And pedotheque is gathered, in room temperature wind
2mm aperture sieves are crossed after dry, weigh 5.00g samples in 100ml triangular flasks, add 25mlDTPA extractants (0.005mol/
LDTPA+0.1mol/L triethanolamines+0.01mol/LCaCl2), vibration is filtered after 2 hours, filtrate is taken, with Atomic absorption-graphite
Effective cadmium content, result of the test are shown in Table 2 in oven process determination sample.
The result of the test of table 2
| Project | Biomass relative quantity, % | Pakchoi cadmium content, mg/kg | The effective cadmium content of soil, mg/kg |
| Control group | 100 | 0.157 | 8.81 |
| Embodiment 1 | 118 | 0.088 | 2.54 |
As shown in Table 2, using effectively increasing pakchoi biomass after renovation agent, while pakchoi body is also effectively reduced
The content of interior cadmium, renovation agent can substantially reduce the content of effective cadmium in soil, cadmium pollution risk be reduced, to Cadmium Pollution in Soils
There is obvious repairing effect.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, can also be on the premise of this patent objective not be departed from one skilled in the relevant art's possessed knowledge
Make a variety of changes.
Claims (8)
1. a kind of agricultural land soil cadmium pollution renovation agent, it is characterised in that include the component of following parts by weight：Urea 10-20 parts,
Erythromycin 2-5 parts, legume root, stem and leaf shell discarded object powder 8-15 parts, nitro humic acid copper 2-5 parts, sulphur 1-3 parts, EDTA
Disodium 2-8 parts, excrementum pteropi 3-9 parts, matrine 2-5 parts, cupreol 4-8 parts, Radix et Caulis Opuntiae Dillenii extract 3-8 parts, fibrous hydroxyl
Apatite 2-5 parts, PLA 3-5 parts, polyglyceryl fatty acid ester 4-8 parts, cyclodextrin sodium sulphate 3-7 parts, manioc waste 5-11 parts, coffee
Coffee powder 4-11 parts, 6-caprolactone 2-6 parts.
2. agricultural land soil cadmium pollution renovation agent according to claim 1, it is characterised in that include the group of following parts by weight
Part：15 parts of urea, 4 parts of erythromycin, 12 parts of legume root, stem and leaf shell discarded object powder, 3 parts of nitro humic acid copper, 2 parts of sulphur,
5 parts of EDETATE SODIUM, 6 parts of excrementum pteropi, 4 parts of matrine, 5 parts of cupreol, 7 parts of Radix et Caulis Opuntiae Dillenii extract, fibrous hydroxyapatite 4
Part, 4 parts of PLA, 6 parts of polyglyceryl fatty acid ester, 5 parts of cyclodextrin sodium sulphate, 6 parts of manioc waste, 8 parts of ground coffee, 6-caprolactone 4
Part.
3. agricultural land soil cadmium pollution renovation agent according to claim 1, it is characterised in that the legume includes youngster
One or more in tea, clover, clover, radix glycyrrhizae.
A kind of 4. preparation method of agricultural land soil cadmium pollution renovation agent as described in claim 1-3 is any, it is characterised in that bag
Include following steps：
（1）EDETATE SODIUM, polyglyceryl fatty acid ester, urea, erythromycin and matrine are added in agitator, adds 100-200
Part water, reaction 5-11h is mixed, mixing speed 50-85r/min, obtains mixed liquor；
（2）By sulphur, manioc waste, ground coffee, excrementum pteropi, Radix et Caulis Opuntiae Dillenii extract, legume root, stem and leaf shell discarded object powder and
Nitro humic acid copper mixes, and the stirring reaction 5-8h at 100-125 DEG C, then mixture is placed at 258-384 DEG C and calcines 2-
5h, calcined product is obtained, be ground to obtain mixed-powder；
（3）By mixed liquor, mixed-powder, cupreol, fibrous hydroxyapatite, PLA, 6-caprolactone and cyclodextrin sulphur
Sour sodium mixes 15-30min at 1-5 DEG C, stands 1-2h, continues to stir 3-5h, gets product.
5. the preparation method of agricultural land soil cadmium pollution renovation agent according to claim 4, it is characterised in that step（1）In
Add 158 parts of water.
6. the preparation method of agricultural land soil cadmium pollution renovation agent according to claim 4, it is characterised in that step（1）In
Mix reaction 8h, mixing speed 65r/min.
7. the preparation method of agricultural land soil cadmium pollution renovation agent according to claim 4, it is characterised in that step（2）
Stirring reaction 6h at 115 DEG C, then mixture is placed at 325 DEG C and calcines 4h.
8. the preparation method of agricultural land soil cadmium pollution renovation agent according to claim 4, it is characterised in that step（3）2
20min is mixed at DEG C, stands 1.8h, continues to stir 4h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108070382A (en) * | 2017-12-22 | 2018-05-25 | 苏州艾捷尔斯生物科技有限公司 | A kind of heavy metal cadmium soil-repairing agent and its preparation method and application |
| CN108480371A (en) * | 2018-01-31 | 2018-09-04 | 马骏 | A kind of earthworm cultivating soil renovation agent and its preparation method and application |
| CN115746865A (en) * | 2022-11-02 | 2023-03-07 | 湘南学院 | Composite conditioner for repairing cadmium pollution of soil |
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| CN105567249A (en) * | 2016-02-29 | 2016-05-11 | 山西民基生态环境工程股份有限公司 | Chemical repairing agent for farmland soil Cd pollution |
| CN105713616A (en) * | 2016-02-04 | 2016-06-29 | 周益辉 | Cadmium contaminated soil restoring agent and using method and application thereof |
| CN106190164A (en) * | 2016-08-25 | 2016-12-07 | 惠安华晨贸易有限公司 | A kind of cadmium pollution soil renovation agent and preparation method thereof |
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| CN105713616A (en) * | 2016-02-04 | 2016-06-29 | 周益辉 | Cadmium contaminated soil restoring agent and using method and application thereof |
| CN105567249A (en) * | 2016-02-29 | 2016-05-11 | 山西民基生态环境工程股份有限公司 | Chemical repairing agent for farmland soil Cd pollution |
| CN106190164A (en) * | 2016-08-25 | 2016-12-07 | 惠安华晨贸易有限公司 | A kind of cadmium pollution soil renovation agent and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108070382A (en) * | 2017-12-22 | 2018-05-25 | 苏州艾捷尔斯生物科技有限公司 | A kind of heavy metal cadmium soil-repairing agent and its preparation method and application |
| CN108480371A (en) * | 2018-01-31 | 2018-09-04 | 马骏 | A kind of earthworm cultivating soil renovation agent and its preparation method and application |
| CN115746865A (en) * | 2022-11-02 | 2023-03-07 | 湘南学院 | Composite conditioner for repairing cadmium pollution of soil |
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Application publication date: 20171222 |
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