CN110055075A - A kind of compound drug and its application method for acidic fluoride contaminated soil - Google Patents
A kind of compound drug and its application method for acidic fluoride contaminated soil Download PDFInfo
- Publication number
- CN110055075A CN110055075A CN201910294641.5A CN201910294641A CN110055075A CN 110055075 A CN110055075 A CN 110055075A CN 201910294641 A CN201910294641 A CN 201910294641A CN 110055075 A CN110055075 A CN 110055075A
- Authority
- CN
- China
- Prior art keywords
- hydrophosphate
- fluoride
- compound drug
- quick lime
- soil
- 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
-
- 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
- C09K17/06—Calcium compounds, e.g. lime
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 invention discloses a kind of compound drugs and its application method for acidic fluoride contaminated soil.It uses quick lime, hydrophosphate, bentonite and flyash, and reasonable disposition quick lime, hydrophosphate, the proportional region of bentonite and flyash three, it is set to play synergistic effect, it was found that can be to water-soluble state in soil, organically combine state, exchangeable species, the fluorine of the forms such as Fe-Mn oxide form and residual form realizes that physics is sealed or occurred chemical reaction up for safekeeping and forms solid sediment, to reduce contaminant transportation, it is higher to the removal effect of fluorine, after tested, it is 6.5-6.8 for pH, the original leaching concentration of fluoride is the fluoride pollution soil of 5.5-5.8mg/L, the pH of the acidic fluoride contaminated soil can be made to be increased to 7.3-7.8, fluoride leaching concentration is not more than 1.1mg/L, the solidification and stabilization effect of compound drug of the invention to fluoride in acid pollution soil Not less than 80.7%.
Description
Technical field
The invention belongs to soil pollution processing technology fields, and in particular to a kind of answering for acidic fluoride contaminated soil
Dose out powders and its application method.
Background technique
The enterprises such as steel, electrolytic aluminium can generate a large amount of fluoride waste in process of production, these fluoride wastes enter ring
It will result in environmental pollution behind border.Currently, as urban structure upgrading and adjustment of industry layout, contamination type enterprises remove are left
A large amount of contaminated sites.Fluoride pollution soil restoring technology mainly has electrokinetic technique, chemical leaching technology etc., but these technologies at present
It is in conceptual phase mostly, applies to few in engineering.
Wherein electrokinetic technique is exactly the H generated by the way of electrolysis in anode2And O2, and acetic acid is added in anode chamber
Sodium solution provides OH-Neutralize the H that anode generates+, extra OH-And the OH that cathode generates-Promote soil in ADSORPTION STATE fluorine desorption at
For free fluorine ion, fluoride in soil is set to remove by the effect of the electrodynamics such as electromigration, electrodialysis.But the party
Formula needs the equipment as electrolytic cell, causes to operate more complex.Chemical leaching technology is then using cyclodextrin and chitosan etc.
Carry out washed off soil, the fluoride in soil is eluted, but form existing for fluorine is more in soil, generally has water-soluble state, has
Machine reference state, exchangeable species, Fe-Mn oxide form and residual form etc., which can not effectively remove soil in practical applications
In fluoride.
Summary of the invention
For this purpose, of the invention, the technical problem to be solved is that the repair mode of existing fluoride pollution soil is complicated and repairs
Multiple effect defect to be improved, and then provide a kind of compound drug for acidic fluoride contaminated soil and its user
Method.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
Compound drug provided by the present invention, the raw material including following parts by weight:
It further, further include the water of 20~30 parts by weight.
Further, the hydrophosphate is disodium-hydrogen, in sodium dihydrogen phosphate, potassium phosphate,monobasic, potassium dihydrogen phosphate
At least one；
The bentonite is calcium-base bentonite, powdered.
Further, the hydrophosphate is (3-5) by mass ratio: 1 disodium-hydrogen and sodium dihydrogen phosphate forms；Or
Person,
The hydrophosphate is (2-5) by mass ratio: 1 potassium phosphate,monobasic and potassium dihydrogen phosphate forms.
Further, the hydrophosphate is solid powdery hydrophosphate, phosphorus in the solid powdery hydrophosphate
The content of sour hydrogen salt is not less than 90wt%.
Further, the quick lime is solid powdery quick lime, the content of calcium oxide in the powdered quick lime
Greater than 60wt%.
In addition, including the following steps: the present invention also provides the application method of above-mentioned compound drug
After successively adding quick lime, hydrophosphate, bentonite, flyash and water in oxytropism fluoride pollution soil, support
Shield, the fluoride pollution soil after being repaired.
Further, the temperature of the maintenance is 20-35 DEG C, and the time is 6-8 days.
Further, the hydrophosphate of 0.2~0.4g, 0.5~1.5g are added in the fluoride pollution soil of every 100g
Quick lime, the bentonite of 0.5~1g, the flyash of 0.5~2g and 20~30g water, mix well.
Further, the pH of the fluoride pollution soil is 7.3-7.8, and the pH of the acidic fluoride contaminated soil is
6.5-6.8, the original leaching concentration of fluoride is 5.5-5.8mg/L in the fluoride pollution soil.
(1) compound drug provided by the present invention for acidic fluoride contaminated soil, using quick lime, phosphoric acid hydrogen
The compound drug of salt, bentonite and flyash as acidic fluoride contaminated soil, and reasonable disposition quick lime, hydrophosphate,
The proportional region of bentonite and flyash three, makes it play synergistic effect, and discovery can be to water-soluble state, combination in soil
The fluorine of the forms such as state, exchangeable species, Fe-Mn oxide form and residual form realizes that physics is sealed or occurred chemical reaction up for safekeeping and formed admittedly
Body sediment, so that contaminant transportation is reduced, it is higher to the removal effect of fluorine, it is 6.5-6.8, fluoride for pH after measured
Original leaching concentration be 5.5-5.8mg/L fluoride pollution soil, the pH of the acidic fluoride contaminated soil can be made to improve
To 7.3-7.8, fluoride leaching concentration is not more than 1.1mg/L, and compound drug of the invention is to fluoride in acid pollution soil
Solidification and stabilization significant effect, solidification and stabilization effect are not less than 80.7%.
(2) application method of the compound drug provided by the present invention for acidic fluoride contaminated soil, oxytropism fluorine
After successively adding quick lime, hydrophosphate, bentonite, flyash and water in compound contaminated soil, sealing and standing, after obtaining reparation
Fluoride pollution soil.The specific addition sequence, can effectively improve the using effect of compound drug.
Specific embodiment
There is provided following embodiments is to preferably further understand the present invention, it is not limited to the best embodiment party
Formula is not construed as limiting the contents of the present invention and protection scope, anyone under the inspiration of the present invention or by the present invention and its
The feature of his prior art is combined and any and identical or similar product of the present invention for obtaining, all falls within of the invention
Within protection scope.
Specific experiment step or condition person are not specified in embodiment, according to the literature in the art described routine experiment
The operation of step or condition can carry out.Reagents or instruments used without specified manufacturer, being can be by commercially available acquisition
Conventional reagent product.
Embodiment 1
The present embodiment provides a kind of compound drug, by the hydrophosphate of 0.35g, the quick lime of 1g, 0.75g bentonite,
The water of 1g flyash and 25g composition；
Wherein, hydrophosphate is sodium dihydrogen phosphate；Hydrophosphate is solid powdery hydrophosphate, the solid powdery
The content of hydrophosphate is not less than 90wt% in hydrophosphate；
Bentonite is calcium-base bentonite；
Quick lime is solid powdery quick lime, and the content of calcium oxide is greater than 60wt% in the powdered quick lime.
Embodiment 2
The present embodiment provides a kind of compound drug, by the hydrophosphate of 0.2g, the quick lime of 1.5g, 0.5g bentonite,
The flyash of 2g and the water composition of 20g；
Wherein, hydrophosphate is disodium-hydrogen；Hydrophosphate is solid powdery hydrophosphate, the solid powdery
The content of hydrophosphate is not less than 90wt% in hydrophosphate；
Bentonite is calcium-base bentonite；
Quick lime is solid powdery quick lime, and the content of calcium oxide is greater than 60wt% in the powdered quick lime.
Embodiment 3
The present embodiment provides a kind of compound drug, by the hydrophosphate of 0.4g, the quick lime of 0.5g, 1g bentonite,
The flyash of 0.5g and the water composition of 30g；
Wherein, hydrophosphate is potassium dihydrogen phosphate；Hydrophosphate is solid powdery hydrophosphate, the solid powdery
The content of hydrophosphate is not less than 90wt% in hydrophosphate；
Bentonite is calcium-base bentonite；
Quick lime is solid powdery quick lime, and the content of calcium oxide is greater than 60wt% in the powdered quick lime.
Embodiment 4
The present embodiment provides a kind of compound drugs, with embodiment 1, only difference is that: phosphoric acid hydrogen in the present embodiment
Salt is made of the disodium-hydrogen that mass ratio is 4:1 and sodium dihydrogen phosphate.
Embodiment 5
The present embodiment provides a kind of compound drugs, with embodiment 2, only difference is that: phosphoric acid hydrogen in the present embodiment
Salt is made of the potassium phosphate,monobasic that mass ratio is 3:1 and potassium dihydrogen phosphate.
Embodiment 6
The present embodiment provides a kind of compound drugs, with embodiment 3, only difference is that: bentonite in the present embodiment
For sodium bentonite.
Comparative example 1
This comparative example provides a kind of compound drug, with embodiment 1, only difference is that: it is not added in this comparative example
Bentonite in embodiment 1.
Comparative example 2
This comparative example provides a kind of compound drug, with embodiment 1, only difference is that: it is not added in this comparative example
Quick lime in embodiment 1.
Comparative example 3
This comparative example provides a kind of compound drug, with embodiment 1, only difference is that: it is not added in this comparative example
Hydrophosphate in embodiment 1.
Comparative example 4.
This comparative example provides a kind of compound drug, with embodiment 1, only difference is that: it is not added in this comparative example
Flyash in embodiment 1.
Test example
By the compound drug in above-described embodiment and comparative example be respectively used to repair pH be 6.5-6.8, fluoride it is original
Leaching concentration is the fluoride pollution soil of 5.5-5.8mg/L, and application method is as follows: being divided into the 100g fluoride pollution soil
It does not add successively in corresponding embodiment after the quick lime, hydrophosphate, bentonite, flyash and water of corrresponding quality, Huo Zhexiang
It is successively added in corresponding comparative example after the raw material of corrresponding quality respectively in the 100g fluoride pollution soil, sealing is placed in draught cupboard
In, 7 days are stood in 25 DEG C, is finally mentioned using " solid waste Leaching leaching method sulfonitric method " (HJ/T299-2007)
Take leachate in the fluoride pollution soil after repairing, and measure fluoride concentration in leachate, at the same measurement reparation after
Fluoride pollution soil pH, solidification and stabilization effect calculation formula are as follows:
It is corresponding that test result is as follows shown in table 1:
Table 1
Meanwhile after tested, solidification and stabilization of the compound drug to fluoride in acid pollution soil in the embodiment of the present invention
Effect is not less than 80.7%；And solidification and stabilization effect of the compound drug to fluoride in acid pollution soil in comparative example 1-4
Less than 56.5%.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of compound drug for acidic fluoride contaminated soil, the raw material including following parts by weight:
2. compound drug according to claim 1, which is characterized in that further include the water of 20~30 parts by weight.
3. compound drug according to claim 1 or 2, which is characterized in that the hydrophosphate is disodium-hydrogen, phosphoric acid
At least one of sodium dihydrogen, potassium phosphate,monobasic, potassium dihydrogen phosphate；
The bentonite is calcium-base bentonite, powdered.
4. compound drug according to claim 3, which is characterized in that the hydrophosphate is (3-5) by mass ratio: 1
Disodium-hydrogen and sodium dihydrogen phosphate composition；Alternatively,
The hydrophosphate is (2-5) by mass ratio: 1 potassium phosphate,monobasic and potassium dihydrogen phosphate forms.
5. compound drug described in any one of -4 according to claim 1, which is characterized in that the hydrophosphate is solid powder
Shape hydrophosphate, the content of hydrophosphate is not less than 90wt% in the solid powdery hydrophosphate.
6. compound drug according to any one of claims 1-5, which is characterized in that the quick lime is solid powdery
Quick lime, the content of calcium oxide is greater than 60wt% in the powdered quick lime.
7. the application method of compound drug of any of claims 1-6, includes the following steps:
After successively adding quick lime, hydrophosphate, bentonite, flyash and water in oxytropism fluoride pollution soil, maintenance is obtained
Fluoride pollution soil after to reparation.
8. application method according to claim 7, which is characterized in that the temperature of the maintenance is 20-35 DEG C, time 6-
8 days.
9. application method according to claim 7 or 8, which is characterized in that added in the fluoride pollution soil of every 100g
The hydrophosphate of 0.2~0.4g, the quick lime of 0.5~1.5g, the bentonite of 0.5~1g, the flyash of 0.5~2g and 20~
The water of 30g, mixes well.
10. application method according to claim 9, which is characterized in that the pH of the acidic fluoride contaminated soil is
6.5-6.8, the original leaching concentration of fluoride is 5.5-5.8mg/L in the fluoride pollution soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910294641.5A CN110055075A (en) | 2019-04-12 | 2019-04-12 | A kind of compound drug and its application method for acidic fluoride contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910294641.5A CN110055075A (en) | 2019-04-12 | 2019-04-12 | A kind of compound drug and its application method for acidic fluoride contaminated soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110055075A true CN110055075A (en) | 2019-07-26 |
Family
ID=67318901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910294641.5A Pending CN110055075A (en) | 2019-04-12 | 2019-04-12 | A kind of compound drug and its application method for acidic fluoride contaminated soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110055075A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112175623A (en) * | 2020-10-15 | 2021-01-05 | 森特士兴集团股份有限公司 | Stabilizer for repairing fluoride-contaminated soil and using method thereof |
| CN115044377A (en) * | 2022-05-27 | 2022-09-13 | 湖北科技学院 | Medicament and method for reducing fluorine bioavailability of southern acidic tea garden soil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007268513A (en) * | 2006-03-06 | 2007-10-18 | Kobe Steel Ltd | Method for treating waste |
| CN105419804A (en) * | 2015-10-30 | 2016-03-23 | 深圳市铁汉生态环境股份有限公司 | Repair agent for fluorine polluted soil and repair method for fluorine polluted soil |
| CN107649498A (en) * | 2017-08-21 | 2018-02-02 | 浙江师范大学行知学院 | A kind of method that Activated Sludge Modification clay mineral suppresses plant absorption Fluoride In Soils |
-
2019
- 2019-04-12 CN CN201910294641.5A patent/CN110055075A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007268513A (en) * | 2006-03-06 | 2007-10-18 | Kobe Steel Ltd | Method for treating waste |
| CN105419804A (en) * | 2015-10-30 | 2016-03-23 | 深圳市铁汉生态环境股份有限公司 | Repair agent for fluorine polluted soil and repair method for fluorine polluted soil |
| CN107649498A (en) * | 2017-08-21 | 2018-02-02 | 浙江师范大学行知学院 | A kind of method that Activated Sludge Modification clay mineral suppresses plant absorption Fluoride In Soils |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112175623A (en) * | 2020-10-15 | 2021-01-05 | 森特士兴集团股份有限公司 | Stabilizer for repairing fluoride-contaminated soil and using method thereof |
| CN115044377A (en) * | 2022-05-27 | 2022-09-13 | 湖北科技学院 | Medicament and method for reducing fluorine bioavailability of southern acidic tea garden soil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105238409B (en) | The linkage stabilizer and restorative procedure of restoration of soil polluted by heavy metal | |
| CN107116097B (en) | A kind of method for repairing As polluted soil | |
| CN110699084B (en) | Soil heavy metal pollution curing and repairing composite reagent and curing and repairing method | |
| CN109054848A (en) | A kind of heavy-metal contaminated soil renovation agent and preparation method thereof and application method | |
| CN104399742B (en) | A kind of method for strengthening Fenton oxidation renovation of organic pollution soil | |
| CN110252796A (en) | A kind of organic polluted soil chemical oxidation repairs medicament and its application method | |
| CN110055075A (en) | A kind of compound drug and its application method for acidic fluoride contaminated soil | |
| CN109554180A (en) | A kind of heavy-metal contaminated soil renovation agent and restorative procedure | |
| CN107789787A (en) | For repairing the stabilization agent and application method of arsenic-containing waste residue | |
| JPWO2015064522A1 (en) | Insolubilizing material for specified hazardous substances and method for insolubilizing specified hazardous substances using the same | |
| CN109762569B (en) | Heavy metal cadmium and arsenic composite contaminated soil remediation agent and preparation method thereof | |
| CN105154093A (en) | Stabilizer for treating lead contaminated soil and application thereof | |
| Jiang et al. | Halving gypsum dose by Penicillium oxalicum on alkaline neutralization and microbial community reconstruction in bauxite residue | |
| CN110079324A (en) | A kind of compound drug and preparation method thereof | |
| CN106007276A (en) | Pretreatment and solidification method of heavy-metal-polluted river course sediment | |
| CN104774619A (en) | Immobilizing and stabilizing agent for arsenic-contaminated soil and application thereof | |
| CN1810395A (en) | Chemical process of stabilizing fly ash from incinerating city garbage | |
| CN113058993A (en) | Repairing agent for repairing lead, arsenic and cadmium combined polluted soil and repairing method thereof | |
| CN109796984A (en) | A kind of reduction stabilization agent for chromium-polluted soil | |
| US20060229485A1 (en) | Method for dry seed stabilization of material or waste | |
| CN110079323A (en) | A kind of arsenic, nickel combined pollution place soil remediation stabilizer and its processing method | |
| CN109652079A (en) | A kind of flyash modified method and application for mercury pollution original position soil reparation | |
| CN113751488A (en) | Wet detoxification and bioremediation combined method for chromium slag and chromium-contaminated soil | |
| CN113182349A (en) | Method for restoring chromium-polluted soil by utilizing electro-dynamic coupling permeation reaction wall | |
| CN109749749A (en) | A kind of preparation method and applications of modified rock phosphate in powder stabilizer |
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: 20190726 |