CN108998033A - The renovation agent and its restorative procedure of cadmium, lead combined contamination soil - Google Patents
The renovation agent and its restorative procedure of cadmium, lead combined contamination soil Download PDFInfo
- Publication number
- CN108998033A CN108998033A CN201810707071.3A CN201810707071A CN108998033A CN 108998033 A CN108998033 A CN 108998033A CN 201810707071 A CN201810707071 A CN 201810707071A CN 108998033 A CN108998033 A CN 108998033A
- Authority
- CN
- China
- Prior art keywords
- soil
- cadmium
- renovation agent
- pulvis
- aqua
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- 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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/04—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only applied in a physical form other than a solution or a grout, e.g. as granules or gases
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of cadmiums, the renovation agent and its restorative procedure of lead combined contamination soil, the cadmium, lead combined contamination soil renovation agent include pulvis and aqua, the pulvis includes clay powder, calcium carbonate, calcium oxide, sulfur-based compound, calcium monohydrogen phosphate, Fe-base compound, and the aqua is sodium sulfide solution.The present invention improves remediation efficiency while also ensuring repairing effect in such a way that pulvis adds aqua joint to repair；The adding proportion of renovation agent is down to 3% or so, and the stabilization rate of heavy metal is greater than 90%, repair stability and high efficiency, rehabilitation cost is low, effect is obvious, and the compound leaching concentration of heavy metal in soil cadmium, lead is lower than " groundwater quality standard " (GB/T14848-93) IV class water quality standard after reparation.
Description
Technical field
The present invention relates to contaminated soil remediation field more particularly to a kind of cadmium, lead combined contamination soil renovation agent and its
Restorative procedure.
Background technique
With the fast development of social economy, the discharge of the ground such as the various work enterprises three wastes, sanitary sewage, Agricultural Activities,
Cause heavy metal pollution phenomenon in the surrounding mediums such as soil, water body serious.Heavy metal element is one of Environmental Pollution object, tool
There is the features such as difficult to degrade, easy accumulation, toxicity is big, and population health can be endangered by food chain.In heavy metal contaminants place
Heavy metal gradually dissolves out under the washing away of rainwater and underground water and carries out diffusion mobility, constitutes pollution threat to surrounding enviroment, right
Human health generates potential risk.Therefore, heavy metal pollution site remediation has consequence in environment remediation engineering field.
In environmental chemical pollutants, compound cadmium, lead are one of pollutants that is most common, endangering residents ' health most serious,
In particular with the development of modern industrial and agricultural production, cadmium, lead combined pollution are on the rise to the pollution of environment.
Cadmium, lead combined pollution main source specifically include that
(1) exploitation and smelting containing lead minerals especially spread extensive Pb-Zn deposits selecting, smelting to environment in China
Chronic pollution；
(2) in the exploitation and smelting of certain non-ferrous metals, usually there are more or less cadmium or lead compound discharge, pollution
Ambient enviroment；
(3) the extensive utilization of cadmium, lead compound, such as production and use containing cadmium, lead pigments, lead storage battery, increase
Cadmium, lead combined pollution amount in environment.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides the renovation agent of a kind of cadmium, lead combined contamination soil, it is powder combined and
Aqua carries out the mode of in-situ immobilization, and reparation stability and high efficiency, safe and reliable, effect is obvious and cheap.
The technical solution adopted by the present invention to solve the technical problems is: the renovation agent of the cadmium, lead combined contamination soil
Including pulvis and aqua, the pulvis includes clay powder, calcium carbonate, calcium oxide, sulfur-based compound, calcium monohydrogen phosphate, iron-based chemical combination
Object, the aqua are sodium sulfide solution.
The cadmium provided by the invention, the renovation agent of lead combined contamination soil a kind of preferred embodiment in, the powder
Agent include 20~45% clay powder, 20~40% calcium carbonate, 5~10% calcium oxide, 5~20% sulfur-based compound,
20~30% calcium monohydrogen phosphate, 2~5% Fe-base compound.
The cadmium provided by the invention, the renovation agent of lead combined contamination soil a kind of preferred embodiment in, the water
Agent is formed using vulcanized sodium and water stirring and dissolving.
The cadmium, lead combined contamination soil restorative procedure include the following steps:
Step 1 measures the cadmium of contaminated soil according to " solid waste Leaching leaching method horizontal vibration method ", lead soaks
Concentration out calculates the ratio of each ingredient in renovation agent, according to the area of soil to be repaired and the thickness of upper soll layer 30cm,
Calculate the dosage of renovation agent；
Step 2 repairs: the pulvis in renovation agent is uniformly mixed by rotary cultivator with soil, while utilizing watering device
Sodium sulfide solution is sprayed on the soil mixed after rotary tillage with pulvis；
Step 3, maintenance: maintenance 3 days or more.
The cadmium provided by the invention, the restorative procedure of lead combined contamination soil a kind of preferred embodiment in, it is described
In step 1, the additive amount of the pulvis is the 1~5% of contaminated soil quality, and the additive amount of the vulcanized sodium in the aqua is
The 0.5~2% of contaminated soil quality, the additive amount of water are the 10~20% of contaminated soil quality.
The cadmium provided by the invention, the restorative procedure of lead combined contamination soil a kind of preferred embodiment in, it is described
The solution concentration of aqua is 5~20%.
Compared with prior art, cadmium provided by the invention, the renovation agent of lead combined contamination soil and its restorative procedure has
Beneficial effect is: the present invention improves remediation efficiency while also ensuring reparation effect in such a way that pulvis adds aqua joint to repair
Fruit；The adding proportion of renovation agent is down to 3% or so, and the stabilization rate of heavy metal is greater than 90%, repairs stability and high efficiency, repair at
This is low, effect is obvious, and the compound leaching concentration of heavy metal in soil cadmium, lead is lower than " groundwater quality standard " (GB/ after reparation
T14848-93) IV class water quality standard.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, in which:
Fig. 1 be the cadmium provided by the invention, lead combined contamination soil restorative procedure flow diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiments are merely a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts all other
Embodiment shall fall within the protection scope of the present invention.
The cadmium, lead combined contamination soil renovation agent include pulvis and aqua, the pulvis includes clay powder, carbonic acid
Calcium, calcium oxide, sulfur-based compound, calcium monohydrogen phosphate, Fe-base compound, the aqua are sodium sulfide solution, utilize pulvis and pollution
Ion mineralising stabilization reactions occur for the heavy metal ion of soil, generate the stable crystal of ore containing heavy metal, even if for a long time
Under acidic environment, heavy metal ion will not be released again, guarantee repairing effect stability and permanence, while aqua has
Promote reacting for pulvis and heavy metal ion to effect.
Specifically, the pulvis include 20~45% clay powder, 20~40% calcium carbonate, 5~10% calcium oxide,
5~20% sulfur-based compound, 20~30% calcium monohydrogen phosphate, 2~5% Fe-base compound.
Specifically, the aqua is formed using vulcanized sodium and water stirring and dissolving.
Please refer to Fig. 1, the cadmium, lead combined contamination soil restorative procedure include the following steps:
Step 1 S1 prepares renovation agent: measuring pollution according to " solid waste Leaching leaching method horizontal vibration method "
Cadmium, the lead leaching concentration of soil, calculate the ratio of each ingredient in renovation agent, according to the area of soil to be repaired and soil table
The thickness of layer 30cm, calculates the dosage of renovation agent；
Specifically, the additive amount of the pulvis is the 1~5% of contaminated soil quality, and the vulcanized sodium in the aqua adds
Dosage is the 0.5~2% of contaminated soil quality, and the additive amount of water is the 10~20% of contaminated soil quality, the aqua it is molten
Liquid concentration is 5~20%.
Step 2 S2 is repaired: the pulvis in renovation agent is uniformly mixed by rotary cultivator with soil, while utilizing watering dress
It sets and sodium sulfide solution is sprayed on the soil mixed after rotary tillage with pulvis；
Step 3 S3, maintenance: maintenance 3 days or more.
When specific implementation: being repaired (leaching side to the soil that cadmium, lead leaching concentration are respectively 0.9mg/L and 1.2mg/L
Method is according to " solid waste Leaching leaching method horizontal vibration method " (HJ557-2010)), the addition of calcium monohydrogen phosphate in pulvis
Ratio is 20%, and the mass percent concentration of vulcanized sodium is 10% in sodium sulfide solution, and the adding proportion of sodium sulfide solution is
After 20%, oxidation three days, the leaching concentration for stabilizing sample cadmium and lead is respectively 0.003mg/L and 0.03mg/L, and soil pH is
7.5, meet " groundwater quality standard " (GB/T14848-93) IV class water quality standard.
Cadmium, the renovation agent of lead combined contamination soil and its beneficial effect of restorative procedure provided by the invention are: the present invention
In such a way that pulvis plus aqua joint are repaired, improves remediation efficiency while also ensuring repairing effect；The addition of renovation agent
Ratio is down to 3% or so, and the stabilization rate of heavy metal is greater than 90%, repairs stability and high efficiency, and rehabilitation cost is low, effect is obvious,
The compound leaching concentration of heavy metal in soil cadmium, lead is lower than " groundwater quality standard " (GB/T14848-93) IV class water after reparation
Standard.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright description is applied directly or indirectly in other relevant technology necks
Domain similarly includes within scope of patent protection of the invention.
Claims (6)
1. the renovation agent of a kind of cadmium, lead combined contamination soil, it is characterised in that: including pulvis and aqua, the pulvis includes glutinous
Native powder, calcium carbonate, calcium oxide, sulfur-based compound, calcium monohydrogen phosphate, Fe-base compound, the aqua are sodium sulfide solution.
2. the renovation agent of cadmium according to claim 1, lead combined contamination soil, it is characterised in that: the pulvis includes 20
~45% clay powder, 20~40% calcium carbonate, 5~10% calcium oxide, 5~20% sulfur-based compound, 20~30%
Calcium monohydrogen phosphate, 2~5% Fe-base compound.
3. the renovation agent of cadmium according to claim 1, lead combined contamination soil, it is characterised in that: the aqua uses sulphur
Change sodium and water stirring and dissolving forms.
4. the restorative procedure of any cadmium, lead combined contamination soil according to claim 1~3, it is characterised in that: including such as
Lower step:
Step 1 prepares renovation agent: measuring contaminated soil according to " solid waste Leaching leaching method horizontal vibration method "
Cadmium, lead leaching concentration, calculate the ratio of each ingredient in renovation agent, according to the area of soil to be repaired and upper soll layer 30cm
Thickness, calculate the dosage of renovation agent；
Step 2 repairs: the pulvis in renovation agent is uniformly mixed by rotary cultivator with soil, while utilizing watering device by sulphur
Change sodium solution to be sprayed on the soil mixed after rotary tillage with pulvis；
Step 3, maintenance: maintenance 3 days or more.
5. the restorative procedure of cadmium according to claim 4, lead combined contamination soil, it is characterised in that: in the step 1,
The additive amount of the pulvis is the 1~5% of contaminated soil quality, and the additive amount of the vulcanized sodium in the aqua is Polluted Soil loamy texture
The 0.5~2% of amount, the additive amount of water are the 10~20% of contaminated soil quality.
6. the restorative procedure of cadmium according to claim 5, lead combined contamination soil, it is characterised in that: the aqua it is molten
Liquid concentration is 5~20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707071.3A CN108998033A (en) | 2018-06-28 | 2018-06-28 | The renovation agent and its restorative procedure of cadmium, lead combined contamination soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810707071.3A CN108998033A (en) | 2018-06-28 | 2018-06-28 | The renovation agent and its restorative procedure of cadmium, lead combined contamination soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108998033A true CN108998033A (en) | 2018-12-14 |
Family
ID=64600504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810707071.3A Pending CN108998033A (en) | 2018-06-28 | 2018-06-28 | The renovation agent and its restorative procedure of cadmium, lead combined contamination soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108998033A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795383A (en) * | 2020-12-17 | 2021-05-14 | 赛恩斯环保股份有限公司 | Multiple heavy metal compound contaminated soil remediation agent and application method thereof |
| CN114958380A (en) * | 2021-03-01 | 2022-08-30 | 中国科学院大学 | Repairing agent for repairing lead-cadmium combined polluted soil and using method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50150251A (en) * | 1974-05-25 | 1975-12-02 | ||
| JPS5618682A (en) * | 1979-07-24 | 1981-02-21 | Onoda Cement Co Ltd | Improvement of soil contaminated with heavy metal |
| CN102921142A (en) * | 2012-11-06 | 2013-02-13 | 莱沃睿智绿色科技（北京）有限公司 | Heavy metal pollutant immobilized reagent composition and immobilization treatment method |
| CN104973843A (en) * | 2015-07-16 | 2015-10-14 | 成都德菲环境工程有限公司 | Soil remediation chemical and remediation method thereof |
| CN105482823A (en) * | 2015-11-27 | 2016-04-13 | 杭州萧宏环保科技股份有限公司 | Restoration drug of high concentration lead-polluted soil and use method thereof |
| CN106281332A (en) * | 2016-07-27 | 2017-01-04 | 武汉都市环保工程技术股份有限公司 | Mercury contaminated soil reparation passivator and mercury contaminated soil restorative procedure and application |
| CN107987835A (en) * | 2017-12-12 | 2018-05-04 | 云南农业大学 | A kind of heavy-metal contaminated soil composite passivant and its preparation method and application |
-
2018
- 2018-06-28 CN CN201810707071.3A patent/CN108998033A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50150251A (en) * | 1974-05-25 | 1975-12-02 | ||
| JPS5618682A (en) * | 1979-07-24 | 1981-02-21 | Onoda Cement Co Ltd | Improvement of soil contaminated with heavy metal |
| CN102921142A (en) * | 2012-11-06 | 2013-02-13 | 莱沃睿智绿色科技（北京）有限公司 | Heavy metal pollutant immobilized reagent composition and immobilization treatment method |
| CN104973843A (en) * | 2015-07-16 | 2015-10-14 | 成都德菲环境工程有限公司 | Soil remediation chemical and remediation method thereof |
| CN105482823A (en) * | 2015-11-27 | 2016-04-13 | 杭州萧宏环保科技股份有限公司 | Restoration drug of high concentration lead-polluted soil and use method thereof |
| CN106281332A (en) * | 2016-07-27 | 2017-01-04 | 武汉都市环保工程技术股份有限公司 | Mercury contaminated soil reparation passivator and mercury contaminated soil restorative procedure and application |
| CN107987835A (en) * | 2017-12-12 | 2018-05-04 | 云南农业大学 | A kind of heavy-metal contaminated soil composite passivant and its preparation method and application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112795383A (en) * | 2020-12-17 | 2021-05-14 | 赛恩斯环保股份有限公司 | Multiple heavy metal compound contaminated soil remediation agent and application method thereof |
| CN114958380A (en) * | 2021-03-01 | 2022-08-30 | 中国科学院大学 | Repairing agent for repairing lead-cadmium combined polluted soil and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102732259B (en) | A kind of heavy metal contamination crystallization encapsulating stabilization agent and using method thereof | |
| CN102343357B (en) | Stabilizer suitable for heavy metal contaminated soil and application method thereof | |
| CN105598154B (en) | The method for repairing As polluted soil | |
| CN103396806A (en) | Agent and method used for remedying heavy metal polluted soil | |
| CN104845626A (en) | Passivating agent for governing heavy metal contaminated soil and preparation and use method of passivating agent | |
| CN105344706B (en) | For the curing agent and restorative procedure of lead-contaminated soil reparation | |
| CN104759466A (en) | Soil heavy metal ex-situ remediation method based on molecular combination | |
| CN104164238A (en) | Efficient solidification/stabilization repair reagent for soil contaminated by heavy metals | |
| CN105414164A (en) | Repair method of arsenic-polluted soil | |
| CN105623667A (en) | Soil remediation agent | |
| CN105414163A (en) | Method for repairing cadmium contaminated soil | |
| CN108059958A (en) | A kind of antimony pollution place soil stabilization renovation agent and preparation method thereof | |
| CN104498047A (en) | Conditioner and method for remedying heavy metal soil pollution | |
| CN101417287B (en) | Chemical repair method for cyanide polluted soil | |
| CN108998033A (en) | The renovation agent and its restorative procedure of cadmium, lead combined contamination soil | |
| CN108213073A (en) | A kind of restorative procedure of heavy-metal contaminated soil | |
| CN104479684A (en) | Curing agent and method for heavy metal in polluted soil | |
| CN105967470B (en) | A kind of cadmium copper lead contamination bed mud curing agent and its curing method | |
| CN104043645B (en) | A kind of arsenic Polluted Soil restorative procedure | |
| CN105505399A (en) | Heavy-metal solidifying agent and heavy metal contaminated soil solidifying method | |
| CN109652079A (en) | A kind of flyash modified method and application for mercury pollution original position soil reparation | |
| CN109382396A (en) | One kind is for handling antimony pollution soil remediation medicament and its application method | |
| CN107398472B (en) | A kind of method that low temperature thermal desorption amalgamation stablizes reparation mercury contaminated soil | |
| CN104479686A (en) | Curing agent and method for heavy metal | |
| CN104531158B (en) | A kind of curing agent and its curing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181214 |