CN109810711A - A kind of reparation cadmium-mercury combined pollution soil conditioner and application method - Google Patents
A kind of reparation cadmium-mercury combined pollution soil conditioner and application method Download PDFInfo
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- CN109810711A CN109810711A CN201910147864.9A CN201910147864A CN109810711A CN 109810711 A CN109810711 A CN 109810711A CN 201910147864 A CN201910147864 A CN 201910147864A CN 109810711 A CN109810711 A CN 109810711A
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- soil
- cadmium
- mercury
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- soil conditioner
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- DGJPPCSCQOIWCP-UHFFFAOYSA-N cadmium mercury Chemical compound [Cd].[Hg] DGJPPCSCQOIWCP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000003516 soil conditioner Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002689 soil Substances 0.000 claims abstract description 53
- 239000003610 charcoal Substances 0.000 claims abstract description 10
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 7
- 239000004113 Sepiolite Substances 0.000 claims abstract description 7
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 7
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 7
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 7
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 7
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 7
- -1 thio sulfide Chemical compound 0.000 claims abstract description 7
- 238000012423 maintenance Methods 0.000 claims abstract description 6
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 235000012241 calcium silicate Nutrition 0.000 claims description 2
- FAYYUXPSKDFLEC-UHFFFAOYSA-L calcium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane Chemical compound [Ca+2].[O-]S([O-])(=O)=S FAYYUXPSKDFLEC-UHFFFAOYSA-L 0.000 claims description 2
- 239000002734 clay mineral Substances 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 229910052622 kaolinite Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical group [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 claims 1
- 150000003377 silicon compounds Chemical class 0.000 claims 1
- 229910052793 cadmium Inorganic materials 0.000 abstract description 13
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052753 mercury Inorganic materials 0.000 abstract description 9
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000654 additive Substances 0.000 abstract description 4
- 230000000996 additive effect Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000011109 contamination Methods 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 208000005374 Poisoning Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229940100892 mercury compound Drugs 0.000 description 1
- 150000002731 mercury compounds Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The embodiment of the invention discloses a kind of reparation cadmium-mercury combined pollution soil conditioners and application method, it according to parts by weight include following raw material components: 10-30 parts of sepiolite, 10-40 parts of silicide, 5-20 parts of charcoal, 5-20 parts of kaolin, thio sulfide 5-20 parts, application method step are as follows: first take to be repaired spare containing cadmium-mercury combined contamination soil；Then will configured soil conditioner be added it is described containing in cadmium-mercury contaminated soil, stirring to containing cadmium-mercury contaminated soil with soil conditioner is full and uniform mixes；Soil after being repaired after finally stabilizing maintenance 10-12 days, it is able to achieve to cadmium in soil-mercury combined pollution in-situ immobilization, cadmium and mercury biological effectiveness in soil are reduced, soil available Cd can be made to reduce 33%-75%, soil available mercury content reduces 30%-68%；This technology utilizes environmentally friendly raw material, has long-term stability, can prevent stabilized heavy metal from discharging again, for this technology additive amount within 0.5%, additive amount is few, can guarantee that soil original structure is not destroyed.
Description
Technical field
The present embodiments relate to contaminated soil remediation technical fields, and in particular to a kind of reparation cadmium-mercury combined pollution
Soil conditioner and application method.
Background technique
Cadmium is the nonessential element of plant growth, and poisoning symptom, people can be shown when plant absorption cadmium reaches certain content
Volume can seriously endanger health when tiring out cadmium to a certain extent.Cadmium in Soil is mainly derived from Industrial " three Waste " and is contained in addition to natural cause
Long-term a large amount of applications of cadmium fertilizer.And with the continuous quickening of China's process of industrialization, mining, smelting etc. continue to develop, largely
Cadmium wastewater waste is directly entered farmland without safe handling, leads to Cadmium Pollution in Soils.Mercury pollution is mainly with Industrial " three Waste "
Form exist, but because mercury compound can make that pesticide is practical, largely added into farmland in one period once, cause soil
Mercury is exceeded, agricultural product mercury pollution.
Currently, Cadmium in Soil-mercury pollution reparation main path is to change its existing forms in the soil, reduce its
Transfer ability and biological effectiveness in environment；Or soil improvement by importing soil from other places, phytoremediation are utilized, heavy metal is thoroughly gone from soil
It removes.And soil moved in improve the original, soil replacement method are although effective, but project amount is big, investment is high and need to spend a large amount of manpower financial capacities, are only applicable to office
The improvement of the serious contaminated soil in portion.Phytoremediation requires height to plant, and repairing efficiency is long, and the straw after enrichment still needs to
It is further processed, it is difficult to take effect in a short time.Chemical remediation is then by adding modifying agent, a fixed huge sum of money into contaminated soil
Belong to, is restorative procedure more universal and quick at present to reduce absorption of the plant to heavy metal.Common modifying agent has stone
Ash, natural crystal, calcium magnesium phosphate, biological straw etc..
Currently, it is more for single heavy metal contaminated soil conditioner type, for cadmium-mercury combined pollution soil
Conditioner is few, as patent (application number: 201310265005.2) discloses a kind of Cadmium in Soil conditioner and preparation method thereof and answers
With, it specifically disclosing red mud, stalk, lime, phosphate fertilizer etc. and is applied in combination, major technique is the reduction effective cadmium content of soil, but
Other heavy metals such as repairing effect is single, can not fix mercury.
Summary of the invention
For this purpose, the embodiment of the present invention provides one kind can repair cadmium-mercury combined contamination soil conditioner and its application simultaneously
Method, the conditioner dosage is small, do not influence soil texture and has long-term stability, to solve the problems of the prior art.
To achieve the goals above, embodiments of the present invention provide the following technical solutions:
In the first aspect of embodiments of the present invention, a kind of reparation cadmium-mercury combined pollution soil conditioning is provided
Agent includes following raw material components according to parts by weight:
10-30 parts of sepiolite, 10-40 parts of silicide, 5-20 parts of charcoal, 5-20 parts of kaolin, thio sulfide 5-20
Part.
Preferably, the sepiolite is powdery clay mineral.
Preferably, the silicide is silicate, specifically uses calcium silicates or sodium metasilicate.
Preferably, the charcoal is powdery solid charcoal particle.
Preferably, the kaolin is the nonmetallic mineral based on kaolinite.
Preferably, the thio sulfide is thiosulfate, specially sodium thiosulfate or calcium thiosulfate.
In embodiments of the present invention other side, a kind of reparation cadmium-mercury combined pollution soil tune is additionally provided
Agent application method is managed, is included the following steps:
Step 1: take it is to be repaired containing cadmium-mercury contaminated soil, it is spare；
Step 2: configured soil conditioner being added described extremely dirty containing cadmium-mercury containing stirring in cadmium-mercury contaminated soil
Dye soil with soil conditioner is full and uniform mixes；
Step 3: the soil after being repaired after stabilizing maintenance 10-12 days.
Preferably, the adding proportion of the soil conditioner is the 0.05%- containing cadmium-mercury contaminated soil quality per acre
0.5%.
Embodiments of the present invention have the advantages that
The present invention can repair cadmium-mercury combined contamination soil simultaneously, and dosage is small, do not influence soil texture, has long-acting stabilization
Property；
Soil conditioner of the invention is able to achieve to cadmium in soil-mercury combined pollution in-situ immobilization, is reduced in soil
Cadmium-mercury biological effectiveness；This technology is made using environmentally friendly raw material, is had long-term stability, be can effectively prevent stabilization
The heavy metal of change discharges again, and for this technology additive amount within 0.5%, additive amount is few, can guarantee soil original structure not by
It destroys.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily, it is clear that described embodiment is the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
Embodiment 1:
The parts by weight component of soil conditioner of the present invention are as follows:
20 parts of sepiolite, 35 parts of silicide, 10 parts of charcoal, 20 parts of kaolin, 15 parts of thio sulfide.
Above-mentioned each component is uniformly hybridly prepared into conditioner.
Take it is to be repaired configured soil conditioner is added in above-mentioned soil containing cadmium-mercury contaminated soil, stirring is extremely
Contaminated soil with conditioner is full and uniform mixes, the soil after being repaired after stabilizing maintenance 10 days.
Embodiment 2:
The parts by weight component of soil conditioner of the present invention are as follows:
30 parts of sepiolite, 10 parts of silicide, 20 parts of charcoal, 20 parts of kaolin, 20 parts of thio sulfide.
Above-mentioned each component is uniformly hybridly prepared into conditioner.
Take it is to be repaired configured soil conditioner is added in above-mentioned soil containing cadmium-mercury contaminated soil, stirring is extremely
Contaminated soil with conditioner is full and uniform mixes, the soil after being repaired after stabilizing maintenance 10 days.
Embodiment 3:
The parts by weight component of soil conditioner of the present invention are as follows:
10 parts of sepiolite, 40 parts of silicide, 15 parts of charcoal, 20 parts of kaolin, 15 parts of thio sulfide.By above-mentioned each group
Divide and is uniformly hybridly prepared into conditioner.
Take it is to be repaired configured soil conditioner is added in above-mentioned soil containing cadmium-mercury contaminated soil, stirring is extremely
Contaminated soil with conditioner is full and uniform mixes, the soil after being repaired after stabilizing maintenance 10 days.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (8)
1. a kind of reparation cadmium-mercury combined pollution soil conditioner, which is characterized in that according to parts by weight include following raw material
Component:
10-30 parts of sepiolite, 10-40 parts of silicide, 5-20 parts of charcoal, 5-20 parts of kaolin, thio sulfide 5-20 parts.
2. a kind of reparation cadmium-mercury combined pollution soil conditioner according to claim 1, which is characterized in that the sea
Afrodite is powdery clay mineral.
3. a kind of reparation cadmium-mercury combined pollution soil conditioner according to claim 1, which is characterized in that the silicon
Compound is silicate, specifically uses calcium silicates or sodium metasilicate.
4. a kind of reparation cadmium-mercury combined pollution soil conditioner according to claim 1, which is characterized in that the life
Object charcoal is powdery solid charcoal particle.
5. a kind of reparation cadmium-mercury combined pollution soil conditioner according to claim 1, which is characterized in that the height
Ridge soil is the nonmetallic mineral based on kaolinite.
6. a kind of reparation cadmium-mercury combined pollution soil conditioner according to claim 1, which is characterized in that the sulphur
It is thiosulfate, specially sodium thiosulfate or calcium thiosulfate for sulfide.
7. a kind of reparation cadmium-mercury combined pollution soil conditioner application method, which comprises the steps of:
Step 1: take it is to be repaired containing cadmium-mercury contaminated soil, it is spare；
Step 2: the addition of configured soil conditioner is described containing in cadmium-mercury contaminated soil, and stirring extremely contains cadmium-mercury pollution soil
Earth with soil conditioner is full and uniform mixes；
Step 3: the soil after being repaired after stabilizing maintenance 10-12 days.
8. a kind of reparation cadmium-mercury combined pollution soil conditioner according to claim 7, which is characterized in that the soil
The adding proportion of earth conditioner is the 0.05%-0.5% containing cadmium-mercury contaminated soil quality per acre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910147864.9A CN109810711A (en) | 2019-02-27 | 2019-02-27 | A kind of reparation cadmium-mercury combined pollution soil conditioner and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910147864.9A CN109810711A (en) | 2019-02-27 | 2019-02-27 | A kind of reparation cadmium-mercury combined pollution soil conditioner and application method |
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| Publication Number | Publication Date |
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| CN109810711A true CN109810711A (en) | 2019-05-28 |
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| CN201910147864.9A Pending CN109810711A (en) | 2019-02-27 | 2019-02-27 | A kind of reparation cadmium-mercury combined pollution soil conditioner and application method |
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Cited By (2)
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| CN115074136A (en) * | 2022-07-19 | 2022-09-20 | 贵州黔大生态环境与健康研究院有限公司 | Heavy metal contaminated soil remediation agent and soil remediation method |
| CN115449373A (en) * | 2022-09-22 | 2022-12-09 | 湖北省地质科学研究院(湖北省富硒产业研究院) | Soil conditioner for reducing cadmium content of cadmium-polluted soil and application method thereof |
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Application publication date: 20190528 |