CN108746191A - The method that in-situ immobilization removes heavy metal-polluted soil - Google Patents
The method that in-situ immobilization removes heavy metal-polluted soil Download PDFInfo
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- CN108746191A CN108746191A CN201810759718.7A CN201810759718A CN108746191A CN 108746191 A CN108746191 A CN 108746191A CN 201810759718 A CN201810759718 A CN 201810759718A CN 108746191 A CN108746191 A CN 108746191A
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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Abstract
It is sprayed on heavy-metal contaminated soil according to 100-200L/ mus after composite material is diluted with water the invention discloses a kind of method that in-situ immobilization removes heavy metal-polluted soil, including a., applied once every 1 week, continuously apply 1 month；B. modified Chinese medicine slag is mixed with organic fertilizer and heavy-metal contaminated soil is sown into using tractor-ploughing method；C. it uses weight method watering to keep soil moisture content to administer the 50-60% of soil water-holding capacity, continues 7-10 days；Each heavy metal species (such as Pb can be repaired, Cd, Cu, Zn, Cr, ) and toxic organic compound (such as chlorinatedorganic As, bromo organic matter, antibiotic etc.) contaminated soil, reduce the form that heavy metal in soil activity is strong and bioavailability is strong, heavy metal is prevented to be transformed into plant from soil mobility, prevent the biological concentration and amplification of heavy metal, the chromium in soil can efficiently be removed, the heavy metals such as mercury, restore the original function of soil, meet agricultural development needs, ensure the ecological safety of the plants such as crops, the ecological risk that biomagnification and enrichment to avoid heavy metal are brought to the people.
Description
Technical field
The present invention relates to soil remediation field, more particularly to a kind of method of in-situ immobilization removal heavy metal-polluted soil.
Background technology
Soil is the most active ring layer of earth surface system, is the foundation stone that the mankind depend on for existence and development, is to ensure the mankind
The important substance of food and ecological environment security basis.With the modernization of industrial development and agricultural production, the huge sum of money in soil
Belong to pollution and has become one of the main problem for endangering global environment quality.Heavy metal element is a kind of potential pollution
Object, once entering in soil, is administered very difficult it is difficult to by soil microbial degradation.Heavy metal pollution of soil is main
From industrial production, agricultural production and communications and transportation.They not only result in soil vitality and decline and make grain drop in production, and
And in plant and power cylinder accumulation and food chain can be entered, endanger human health.More seriously, these pollutions have
The features such as chronicity, concealment and irreversibility.At present both at home and abroad heavy metal-polluted soil recovery technique be mainly showering, it is steady
Fixedization processing and heat treatment etc..Soil heterotopic rehabilitation cost is high, and soil heat treatment, chemical leaching and stabilization technology lead to soil
Earth loses the ecological functions of this tool, and the problems such as plant disposition of phytoremediation for soil technology restrict heavy-metal contaminated soil
Reparation process.Above-mentioned technology is undoubtedly " palliative treatment " of soil remediation, and the reason of why taking these technologies is soil
Heavy metal permanently removal is the technical bottleneck of soil remediation and the problem that needs are broken through in earth.Economically feasible, technically reliable, not shadow
Ring that grain-production, not destroying the heavy metal of farmland quality, permanently to remove soil in-situ recovery technique be government, farmer and vast
The active demand of the common people.
At present in relation to can permanently remove heavy metal in agricultural land soil and not destroy the technical patent of soil texture fertility also
It is less.The Chinese patent of Publication No. CN103752597A discloses a kind of utilization fixative synergy heat treatment heavy metal in soil
Method, this method fixed efficiency is high, is suitable for the reparation that factory and enterprise moves ground heavy-metal contaminated soil, but the height of this method
Warm processing needs to consume the more energy, secondary pollution is also easy to produce in processing procedure, heavy metal can evaporate again.It is open
Number for CN102657926A Chinese patent disclose a heavy metal species normal temperature cure agent and use its curing heavy metal pollutant
The method of middle heavy metal, the heavy metal normal temperature cure agent are composed of the following components by weight percentage：Magnesia 30.0%-
40.0%, potassium dihydrogen phosphate 55.0%-65.0%, borax 3.5%-5.0%, iron oxide 0.1%-0.5%, silica
0.1% -0.54%, the solidification effect of the normal temperature cure agent is good, and at low cost, operating process is simple and practicable, but this method be with
After adding stabilizer, forms insoluble or sl. sol. heavy metal precipitation form and exist, when external environment changes, heavy metal ion
It is easy anti-molten.The Chinese patent of Publication No. CN104959379A discloses a kind of method of restoration of soil polluted by heavy metal,
Rehabilitation plant is planted in soil and soil is applied and repairs biological agent, and this method is of low cost, implements simple, practicability
By force, it can be carried out at the same time the processing of a variety of pollution mixed compounds, it is environmentally safe, and do not stay secondary pollution and any environment hidden
Suffer from, generating a large amount of biomass in repair process can be used as animal feed and biomass energy, make soil remediation process economy that can hold
It is continuous.But the rehabilitation plant described in this method is annual crop, the period is longer, and repair time is in relatively slow.
Invention content
In view of this, the purpose of the present invention is to provide a kind of method that in-situ immobilization removes heavy metal-polluted soil, can repair
Each heavy metal species (such as Pb, Cd, Cu, Zn, Cr, As) and toxic organic compound (such as chlorinatedorganic, bromo organic matter, antibiotic)
Contaminated soil reduces the form that heavy metal in soil activity is strong and bioavailability is strong, heavy metal is prevented to turn from soil mobility
Change to plant, prevent the biological concentration and amplification of heavy metal, can efficiently remove the heavy metals such as chromium, the mercury in soil, restores soil
Function originally meets agricultural development needs, ensures the ecological safety of the plants such as crops, to avoid the biology of heavy metal from putting
The ecological risk that big and enrichment is brought to the people.
The method of the in-situ immobilization removal heavy metal-polluted soil of the present invention, includes the following steps：
A. it is sprayed on heavy-metal contaminated soil according to 100-200L/ mus after composite material being diluted with water, was applied every 1 week
Add once, continuously applies 1 month；
B. modified Chinese medicine slag is mixed with organic fertilizer and heavy-metal contaminated soil is sown into using tractor-ploughing method；
C. it uses weight method watering to keep soil moisture content to administer the 50-60% of soil water-holding capacity, continues 7-10 days；
The composite material raw material includes following components by weight：10-20 parts of sodium peroxydisulfates, 5-10 parts of poly- epoxy succinics
Sour sodium, 1-5 part polyvinylpyrrolidone, 1-3 parts of nano-sized carbon, 1-5 parts of serpentine, 5-10 parts of Lignitic Humic Acid, surfactant
1-3 parts, 4-8 parts of calcium dioxide, 1-3 parts of potassium permanganate, 1-5 parts of red mud particle, 1-5 parts of aminodithioformic acid chitosan, first
1-3 parts of base acrylyl oxy-ethyl-trimethyl salmiac；
The modified Chinese medicine slag is prepared by following manner：
D. it is 80-100 mesh the mixing dregs of a decoction of Radix Ophiopogonis, Radix Glycyrrhizae and Radix Isatidis to be cleaned, dried, being crushed to grain size, is then added
Enter activator, is sufficiently stirred mixing by certain solid-to-liquid ratio, stands at room temperature for 24 hours；
E. it is drying at 80-90 DEG C in temperature by the feed liquid impregnated, is dried to moisture content < 15%, then puts it into
It is connected in the tube furnace of nitrogen, rises to 500-600 DEG C of activation temperature from room temperature with the heating rate of 10 DEG C/min, then constant temperature
1-1.5 hour；
F. it after activated sample being cooled down, with the HCl solution pickling of a concentration of 3mol/L, after impregnating 30-40min, uses
Temperature is that 70 DEG C~80 DEG C of distilled water washs repeatedly, until pH value is in neutral range；
G. the sample washed is put into drying box, is to dry postcooling at 110-120 DEG C and grind in temperature
It is 200-250 mesh to grain size；
Further, in step a, the weight ratio of composite material and water is 1：10；
Further, the surfactant is the mixed of laruyl alcohol sulfosuccinate disodium and sulfosuccinic acid dihexyl sodium
Close object；
Further, in step d, the activator is the liquor zinci chloridi of a concentration of 3mol/L, solid-to-liquid ratio 1： 2.
Beneficial effects of the present invention：The method of the in-situ immobilization removal heavy metal-polluted soil of the present invention, passes through dithiocarbamates
Heavy metal is effectively fixed in the components such as formic acid chitosan, passes through other groups such as nano-sized carbon, serpentine and Lignitic Humic Acid, Chinese medicine slag
Divide and chemistry, physical absorption directly occurs with heavy metal lead, cadmium and nitrogen ion, reduces available heavy metal content, slow down nitrogen
Release improves nitrogen utilization efficiency, reduces the form that heavy metal in soil activity is strong and bioavailability is strong, prevents heavy metal
It is transformed into plant from soil mobility, prevent the biological concentration of heavy metal and amplifies and mitigates in the plant being grown in contaminated soil
Cadmium accumulation, can repair repair each heavy metal species (such as Pb, Cd, Cu, Zn, Cr, As) and toxic organic compound (such as chlorinatedorganic,
Bromo organic matter, antibiotic etc.) contaminated soil, the heavy metals such as chromium, the mercury in soil can be efficiently removed, the original work(of soil is restored
Can, meet agricultural development needs, ensures the ecological safety of the plants such as crops, to avoid biomagnification and the enrichment of heavy metal
The ecological risk brought to the people.
Specific implementation mode
Embodiment one
The method of the in-situ immobilization removal heavy metal-polluted soil of the present embodiment, includes the following steps：
A. (weight ratio of composite material and water is 1 after composite material being diluted with water：10) it is sprayed at according to 100L/ mus
On heavy-metal contaminated soil, applied once every 1 week, continuously apply 1 month；
B. modified Chinese medicine slag is mixed with organic fertilizer and heavy-metal contaminated soil is sown into using tractor-ploughing method；
C. it uses weight method watering to keep soil moisture content to administer the 50% of soil water-holding capacity, continues 7 days；
The composite material raw material includes following components by weight：10 parts of sodium peroxydisulfates, 5 parts of polyepoxy sodium succinates, 1
Part polyvinylpyrrolidone, 1 part of nano-sized carbon, 1 part of serpentine, 5 parts of Lignitic Humic Acid, 1 part of surfactant, 4 parts of calcium dioxide,
1 part of potassium permanganate, 1 part of red mud particle, 1 part of aminodithioformic acid chitosan, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride 1
Part；
The modified Chinese medicine slag is prepared by following manner：
D. it is 80 mesh the mixing dregs of a decoction of Radix Ophiopogonis, Radix Glycyrrhizae and Radix Isatidis to be cleaned, dried, being crushed to grain size, is then added dense
Degree is the liquor zinci chloridi of 3mol/L, is 1 by solid-to-liquid ratio：2 are sufficiently stirred mixing, stand at room temperature for 24 hours；
E. it is drying at 80 DEG C in temperature by the feed liquid impregnated, is dried to moisture content < 15%, then puts it into logical
Have in the tube furnace of nitrogen, rises to 500 DEG C of activation temperature from room temperature with the heating rate of 10 DEG C/min, then constant temperature 1 hour；
F. after activated sample being cooled down, with the HCl solution pickling of a concentration of 3mol/L, after impregnating 30min, with temperature
Degree washs repeatedly for 70 DEG C of distilled water, until pH value is in neutral range；
G. the sample washed is put into drying box, is to dry postcooling at 110 DEG C and grind to grain in temperature
Diameter is 200 mesh.
Embodiment two
The method of the in-situ immobilization removal heavy metal-polluted soil of the present embodiment, includes the following steps：
A. (weight ratio of composite material and water is 1 after composite material being diluted with water：10) it is sprayed at according to 200L/ mus
On heavy-metal contaminated soil, applied once every 1 week, continuously apply 1 month；
B. modified Chinese medicine slag is mixed with organic fertilizer and heavy-metal contaminated soil is sown into using tractor-ploughing method；
C. it uses weight method watering to keep soil moisture content to administer the 60% of soil water-holding capacity, continues 10 days；
The composite material raw material includes following components by weight：20 parts of sodium peroxydisulfates, 10 parts of polyepoxy sodium succinates,
5 parts of polyvinylpyrrolidones, 3 parts of nano-sized carbon, 5 parts of serpentine, 10 parts of Lignitic Humic Acid, 3 parts of surfactant, calcium dioxide 8
Part, 3 parts of potassium permanganate, 5 parts of red mud particle, 5 parts of aminodithioformic acid chitosan, methylacryoyloxyethyl trimethyl ammonia chloride
3 parts of ammonium；
The modified Chinese medicine slag is prepared by following manner：
D. it is 100 mesh the mixing dregs of a decoction of Radix Ophiopogonis, Radix Glycyrrhizae and Radix Isatidis to be cleaned, dried, being crushed to grain size, is then added dense
Degree is the liquor zinci chloridi of 3mol/L, is 1 by solid-to-liquid ratio：2 are sufficiently stirred mixing, stand at room temperature for 24 hours；
E. it is drying at 90 DEG C in temperature by the feed liquid impregnated, is dried to moisture content < 15%, then puts it into logical
Have in the tube furnace of nitrogen, rises to 600 DEG C of activation temperature from room temperature with the heating rate of 10 DEG C/min, then constant temperature 1.5 hours；
F. after activated sample being cooled down, with the HCl solution pickling of a concentration of 3mol/L, after impregnating 40min, with temperature
Degree washs repeatedly for 80 DEG C of distilled water, until pH value is in neutral range；
G. the sample washed is put into drying box, is to dry postcooling at 120 DEG C and grind to grain in temperature
Diameter is 250 mesh.
Embodiment three
The method of the in-situ immobilization removal heavy metal-polluted soil of the present embodiment, includes the following steps：
A. (weight ratio of composite material and water is 1 after composite material being diluted with water：10) it is sprayed at according to 100L/ mus
On heavy-metal contaminated soil, applied once every 1 week, continuously apply 1 month；
B. modified Chinese medicine slag is mixed with organic fertilizer and heavy-metal contaminated soil is sown into using tractor-ploughing method；
C. it uses weight method watering to keep soil moisture content to administer the 60% of soil water-holding capacity, continues 7 days；
The composite material raw material includes following components by weight：10 parts of sodium peroxydisulfates, 10 parts of polyepoxy sodium succinates,
1 part of polyvinylpyrrolidone, 3 parts of nano-sized carbon, 1 part of serpentine, 10 parts of Lignitic Humic Acid, 1 part of surfactant, calcium dioxide 8
Part, 1 part of potassium permanganate, 5 parts of red mud particle, 1 part of aminodithioformic acid chitosan, methylacryoyloxyethyl trimethyl ammonia chloride
3 parts of ammonium；
The modified Chinese medicine slag is prepared by following manner：
D. it is 80 mesh the mixing dregs of a decoction of Radix Ophiopogonis, Radix Glycyrrhizae and Radix Isatidis to be cleaned, dried, being crushed to grain size, is then added dense
Degree is the liquor zinci chloridi of 3mol/L, is 1 by solid-to-liquid ratio：2 are sufficiently stirred mixing, stand at room temperature for 24 hours；
E. it is drying at 90 DEG C in temperature by the feed liquid impregnated, is dried to moisture content < 15%, then puts it into logical
Have in the tube furnace of nitrogen, rises to 500 DEG C of activation temperature from room temperature with the heating rate of 10 DEG C/min, then constant temperature 1.5 hours；
F. after activated sample being cooled down, with the HCl solution pickling of a concentration of 3mol/L, after impregnating 30min, with temperature
Degree washs repeatedly for 80 DEG C of distilled water, until pH value is in neutral range；
G. the sample washed is put into drying box, is to dry postcooling at 110 DEG C and grind to grain in temperature
Diameter is 250 mesh.
Example IV
The method of the in-situ immobilization removal heavy metal-polluted soil of the present embodiment, includes the following steps：
A. (weight ratio of composite material and water is 1 after composite material being diluted with water：10) it is sprayed at according to 200L/ mus
On heavy-metal contaminated soil, applied once every 1 week, continuously apply 1 month；
B. modified Chinese medicine slag is mixed with organic fertilizer and heavy-metal contaminated soil is sown into using tractor-ploughing method；
C. it uses weight method watering to keep soil moisture content to administer the 50% of soil water-holding capacity, continues 10 days；
The composite material raw material includes following components by weight：20 parts of sodium peroxydisulfates, 5 parts of polyepoxy sodium succinates, 5
Part polyvinylpyrrolidone, 1 part of nano-sized carbon, 5 parts of serpentine, 5 parts of Lignitic Humic Acid, 3 parts of surfactant, 4 parts of calcium dioxide,
3 parts of potassium permanganate, 1 part of red mud particle, 5 parts of aminodithioformic acid chitosan, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride 1
Part；
The modified Chinese medicine slag is prepared by following manner：
D. it is 100 mesh the mixing dregs of a decoction of Radix Ophiopogonis, Radix Glycyrrhizae and Radix Isatidis to be cleaned, dried, being crushed to grain size, is then added dense
Degree is the liquor zinci chloridi of 3mol/L, is 1 by solid-to-liquid ratio：2 are sufficiently stirred mixing, stand at room temperature for 24 hours；
E. it is drying at 80 DEG C in temperature by the feed liquid impregnated, is dried to moisture content < 15%, then puts it into logical
Have in the tube furnace of nitrogen, rises to 600 DEG C of activation temperature from room temperature with the heating rate of 10 DEG C/min, then constant temperature 1 hour；
F. after activated sample being cooled down, with the HCl solution pickling of a concentration of 3mol/L, after impregnating 40min, with temperature
Degree washs repeatedly for 70 DEG C of distilled water, until pH value is in neutral range；
G. the sample washed is put into drying box, is to dry postcooling at 120 DEG C and grind to grain in temperature
Diameter is 200 mesh.
Embodiment five
The method of the in-situ immobilization removal heavy metal-polluted soil of the present embodiment, includes the following steps：
A. (weight ratio of composite material and water is 1 after composite material being diluted with water：10) it is sprayed at according to 150L/ mus
On heavy-metal contaminated soil, applied once every 1 week, continuously apply 1 month；
B. modified Chinese medicine slag is mixed with organic fertilizer and heavy-metal contaminated soil is sown into using tractor-ploughing method；
C. it uses weight method watering to keep soil moisture content to administer the 55% of soil water-holding capacity, continues 8 days；
The composite material raw material includes following components by weight：15 parts of sodium peroxydisulfates, 7 parts of polyepoxy sodium succinates, 3
Part polyvinylpyrrolidone, 1 part of nano-sized carbon, 5 parts of serpentine, 8 parts of Lignitic Humic Acid, 1 part of surfactant, 8 parts of calcium dioxide,
2 parts of potassium permanganate, 1 part of red mud particle, 5 parts of aminodithioformic acid chitosan, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride 2
Part；
The modified Chinese medicine slag is prepared by following manner：
D. it is 90 mesh the mixing dregs of a decoction of Radix Ophiopogonis, Radix Glycyrrhizae and Radix Isatidis to be cleaned, dried, being crushed to grain size, is then added dense
Degree is the liquor zinci chloridi of 3mol/L, is 1 by solid-to-liquid ratio：2 are sufficiently stirred mixing, stand at room temperature for 24 hours；
E. it is drying at 85 DEG C in temperature by the feed liquid impregnated, is dried to moisture content < 15%, then puts it into logical
Have in the tube furnace of nitrogen, rises to 55 DEG C of activation temperature from room temperature with the heating rate of 10 DEG C/min, then constant temperature 1 hour；
F. after activated sample being cooled down, with the HCl solution pickling of a concentration of 3mol/L, after impregnating 35min, with temperature
Degree washs repeatedly for 75 DEG C of distilled water, until pH value is in neutral range；
G. the sample washed is put into drying box, is to dry postcooling at 115 DEG C and grind to grain in temperature
Diameter is 220 mesh.
Embodiment six
The method of the in-situ immobilization removal heavy metal-polluted soil of the present embodiment, includes the following steps：
A. (weight ratio of composite material and water is 1 after composite material being diluted with water：10) it is sprayed at according to 150L/ mus
On heavy-metal contaminated soil, applied once every 1 week, continuously apply 1 month；
B. modified Chinese medicine slag is mixed with organic fertilizer and heavy-metal contaminated soil is sown into using tractor-ploughing method；
C. it uses weight method watering to keep soil moisture content to administer the 58% of soil water-holding capacity, continues 8 days；
The composite material raw material includes following components by weight：15 parts of sodium peroxydisulfates, 8 parts of polyepoxy sodium succinates, 3
Part polyvinylpyrrolidone, 2 parts of nano-sized carbon, 3 parts of serpentine, 7 parts of Lignitic Humic Acid, 2 parts of surfactant, 6 parts of calcium dioxide,
2 parts of potassium permanganate, 3 parts of red mud particle, 3 parts of aminodithioformic acid chitosan, MethacryloyloxyethylTrimethyl Trimethyl Ammonium Chloride 2
Part；
The modified Chinese medicine slag is prepared by following manner：
D. it is 90 mesh the mixing dregs of a decoction of Radix Ophiopogonis, Radix Glycyrrhizae and Radix Isatidis to be cleaned, dried, being crushed to grain size, is then added dense
Degree is the liquor zinci chloridi of 3mol/L, is 1 by solid-to-liquid ratio：2 are sufficiently stirred mixing, stand at room temperature for 24 hours；
E. it is drying at 88 DEG C in temperature by the feed liquid impregnated, is dried to moisture content < 15%, then puts it into logical
Have in the tube furnace of nitrogen, rises to 580 DEG C of activation temperature from room temperature with the heating rate of 10 DEG C/min, then constant temperature 1.4 hours；
F. after activated sample being cooled down, with the HCl solution pickling of a concentration of 3mol/L, after impregnating 37min, with temperature
Degree washs repeatedly for 78 DEG C of distilled water, until pH value is in neutral range；
G. the sample washed is put into drying box, is to dry postcooling at 112 DEG C and grind to grain in temperature
Diameter is 240 mesh.
In above-described embodiment, the surfactant is laruyl alcohol sulfosuccinate disodium and sulfosuccinic acid dihexyl
The mixture of sodium.
The results are shown in table below for reparation, unit：mg/Kg.
Finally illustrate, the above examples are only used to illustrate the technical scheme of the present invention and are not limiting, although with reference to compared with
Good embodiment describes the invention in detail, it will be understood by those of ordinary skill in the art that, it can be to the skill of the present invention
Art scheme is modified or replaced equivalently, and without departing from the objective and range of technical solution of the present invention, should all be covered at this
In the right of invention.
Claims (4)
1. a kind of method of in-situ immobilization removal heavy metal-polluted soil, it is characterised in that：Include the following steps：
A. it is sprayed on heavy-metal contaminated soil according to 100-200L/ mus after composite material being diluted with water, applied one every 1 week
It is secondary, it continuously applies 1 month；
B. modified Chinese medicine slag is mixed with organic fertilizer and heavy-metal contaminated soil is sown into using tractor-ploughing method；
C. it uses weight method watering to keep soil moisture content to administer the 50-60% of soil water-holding capacity, continues 7-10 days；
The composite material raw material includes following components by weight：10-20 parts of sodium peroxydisulfates, 5-10 parts of poly-epoxy succinic acids
Sodium, 1-5 part polyvinylpyrrolidone, 1-3 parts of nano-sized carbon, 1-5 parts of serpentine, 5-10 parts of Lignitic Humic Acid, surfactant 1-3
Part, 4-8 parts of calcium dioxide, 1-3 parts of potassium permanganate, 1-5 parts of red mud particle, 1-5 parts of aminodithioformic acid chitosan, methyl-prop
1-3 parts of alkene acyloxyethyl trimethyl ammonium chloride；
The modified Chinese medicine slag is prepared by following manner：
D. it is 80-100 mesh the mixing dregs of a decoction of Radix Ophiopogonis, Radix Glycyrrhizae and Radix Isatidis to be cleaned, dried, being crushed to grain size, is then added and lives
Agent is sufficiently stirred mixing by certain solid-to-liquid ratio, stands at room temperature for 24 hours；
E. it is drying at 80-90 DEG C in temperature by the feed liquid impregnated, is dried to moisture content < 15%, then puts it into and be connected with
In the tube furnace of nitrogen, 500-600 DEG C of activation temperature is risen to from room temperature with the heating rate of 10 DEG C/min, then constant temperature 1-1.5
Hour；
F. after activated sample being cooled down, temperature is used after impregnating 30-40min with the HCl solution pickling of a concentration of 3mol/L
Distilled water for 70 DEG C~80 DEG C washs repeatedly, until p H values are in neutral range；
G. the sample washed is put into drying box, is to dry postcooling at 110-120 DEG C and grind to grain in temperature
Diameter is 200-250 mesh.
2. the method for in-situ immobilization removal heavy metal-polluted soil according to claim 1, it is characterised in that：It is compound in step a
The weight ratio of material and water is 1：10.
3. the method for in-situ immobilization removal heavy metal-polluted soil according to claim 2, it is characterised in that：The surface-active
Agent is the mixture of laruyl alcohol sulfosuccinate disodium and sulfosuccinic acid dihexyl sodium.
4. the soil in-situ repair composite material according to claim 3 for efficiently removing removing heavy metals, it is characterised in that：Step
In d, the activator is the liquor zinci chloridi of a concentration of 3mol/L, solid-to-liquid ratio 1：2.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108865162A (en) * | 2018-08-03 | 2018-11-23 | 张宏基 | Efficiently remove the compound formulation of removing heavy metals |
| CN113118199A (en) * | 2021-03-24 | 2021-07-16 | 上海市农产品质量安全中心 | Method for in-situ remediation of heavy metal combined contaminated soil by combining plants |
| RU2762361C1 (en) * | 2021-05-19 | 2021-12-20 | Магомет Абубекирович Конов | Complex fertiliser |
| CN115920827A (en) * | 2022-12-29 | 2023-04-07 | 昆明理工大学 | Preparation and application methods of adsorbent for removing typical antibiotic ciprofloxacin |
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| RU2762361C1 (en) * | 2021-05-19 | 2021-12-20 | Магомет Абубекирович Конов | Complex fertiliser |
| CN115920827A (en) * | 2022-12-29 | 2023-04-07 | 昆明理工大学 | Preparation and application methods of adsorbent for removing typical antibiotic ciprofloxacin |
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