CN108865157A - The reparation medicament and restorative procedure of heavy-metal contaminated soil - Google Patents
The reparation medicament and restorative procedure of heavy-metal contaminated soil Download PDFInfo
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- CN108865157A CN108865157A CN201810615820.XA CN201810615820A CN108865157A CN 108865157 A CN108865157 A CN 108865157A CN 201810615820 A CN201810615820 A CN 201810615820A CN 108865157 A CN108865157 A CN 108865157A
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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
- 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
- C09K2101/00—Agricultural use
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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
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
Abstract
The invention discloses the reparation medicaments and restorative procedure of a kind of heavy-metal contaminated soil.The reparation medicament includes medicament A and medicament B, wherein medicament A includes 30~70wt% of aggregate, 0~20wt% of Portland clinker 20~50%, 0~15wt% of lime and gypsum；Medicament B includes 10~50wt% of charcoal, 30~60wt% of fowl animal excretion, agriculture waste residue or 0~10wt% of 10~30wt% of waste material, 0~10wt% of calcium dihydrogen phosphate and sodium alginate.Reagent cost of the invention is low, and realizes the comprehensive utilization of waste；The charcoal cation exchange capacity (CEC) that medicament B is used is big, has good heavy metal adsorption effect, while low in cost；Medicament A's and medicament B is used in combination, and is able to achieve the fixing-stable of heavy metal-polluted soil, can improve the pH of faintly acid soil, and can improve soil nutrient structure and quality, be conducive to subsequent zoology green-recovery.
Description
Technical field
The present invention relates to environmental protection technologies and agricultural fertilizer technical field, in particular to a kind of heavy-metal contaminated soil
Reparation medicament and restorative procedure.
Background technique
Currently, domestic and international improvement huge sum of money contaminated soil includes using more technology：(1) solidification-stabilisation；(2) it elutes；
(3) chemical oxidation-reduction；(4) soil electromotion repairing technique.Wherein, solidification-stabilizing surface treatment be by addition solidification/
Heavy metal element in stabilizer fixing soil, reaching reduces a kind of heavy of Leaching Heavy Metals, migration and biological effectiveness
Want method.Due to solidification-stabilization technology have the characteristics that it is simple, quickly, it is economical, effective, become a kind of important weight
The processing technique of metallic pollution soil.
Currently, common solidification/stabilizer mainly includes following several types：(1) cement, lime, flyash etc. are inorganic
Materials curing agent；(2) the thermosetting organic materials curing agent such as the organic thermoplastics such as pitch, polyethylene and ureaformaldehyde, polyester；
(3) vitrification curing agent；(4) the medicaments stabilizer such as ferrous sulfate, phosphate, sodium hydroxide, macromolecule organic.Due to
The reason of technology and expense etc., using inorganic material such as cement, lime, flyash as the curing/stabilizing application of additive
Most extensively, the 94% of item number is accounted for, in the project using account for item number 3% of inorganic-organic hybrid additive.
Certain class Rare Earth Mine contaminated soil, soil types belong to sand loam, and pH is weakly acidic, and the content of organic matter is low, and pH is slow
It is poor to rush ability.The study found that using as main component with substances such as cement, quick lime (or CaO), sodium hydroxide, sodium carbonate
Fixing-stable stabilization agent will cause soil pH and significantly increase, and not meet standard of soil environment quality, while higher pH pairs
The restoration of the ecosystem of soil and agricultural use adversely affect.In addition, being made with cement fixing-stable chemical drug agent as main component
Soil is easy to harden when dosage is more than 5%, is unfavorable for subsequent restoration of the ecosystem, and when dosage is few, passivation effect is undesirable.With phosphate
Fixing-stable chemical drug agent as main component limits the large-scale use in engineering since medicament price is high.With Nanoscale Iron,
The nano materials such as carbon nanotube medicament as main component, since medicament preparation process is complicated, medicament is at high price, also limits
A large amount of uses in engineering.The solidification of the thermosetting organic materials such as the organic thermoplastics such as pitch, polyethylene and ureaformaldehyde, polyester
Material, although greatly, general landfill stabilization cannot for soil physico-chemical property variation after processing to the good fixing effect of heavy metal
For cultivation or zoology green-recovery.
Currently, need exploitation can low cost fixing-stable heavy metal in soil and improve soil nutrient structure,
Promote the medicament of plant growth.
Summary of the invention
The present invention is intended to provide the reparation medicament and restorative procedure of a kind of heavy-metal contaminated soil, it can low cost with offer
Fixing-stable heavy metal in soil, and soil nutrient structure can be improved, promote the medicament of plant growth.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of reparation of heavy-metal contaminated soil
Medicament.Should include medicament A and medicament B, wherein medicament A include 30~70wt% of aggregate, Portland clinker 20~50%,
0~20wt% of 0~15wt% of lime and gypsum；Medicament B include 10~50wt% of charcoal, 30~60wt% of fowl animal excretion,
10~30wt% of agriculture waste residue or waste material, 0~10wt% of 0~10wt% of calcium dihydrogen phosphate and sodium alginate.
Further, aggregate is selected from by blast furnace waste residue, industrial cement, industrial waste gypsum, carbide slag, salt slurry and flyash
One of group of composition is a variety of.
Further, medicament A each component is uniformly mixed, can cross 300~500 meshes after grinding.
Further, medicament B is that each group lease making is mixed, is made after normal temperature fermentation；Preferably, the temperature of normal temperature fermentation is 18
~35 DEG C.
Further, charcoal is using algae and/or sea grass as carbon source, in starvation, 250~700 DEG C
2~5h is pyrolyzed under the conditions of temperature to obtain；Preferably, algae includes being selected to be made of kelp, seaweed, agar and asparagus
One of group or a variety of；Preferably, sea grass be thallus laminariae, extra large calamus, halophila oralis, Hai Shencao, needle algae, shrimp shape Trentepohlia and
One of Zostera marina is a variety of.
Further, agriculture waste residue or waste material are selected from stalk, root or the cauline leaf of sorghum, corn, sugarcane or sweet potato, and starch adds
One of waste or waste residue that work, wine brewing, food processing generate are a variety of.
Further, medicament B further includes oxalic acid.
Further, medicament B is handled by granulation.
According to another aspect of the present invention, a kind of restorative procedure of heavy-metal contaminated soil is provided.The restorative procedure is adopted
It is repaired with above-mentioned reparation medicament.
Further, include the following steps：1) medicament A is put into water, is uniformly mixed, formed suspension, then will hang
Turbid is mixed with heavy-metal contaminated soil, adjusts heavy-metal contaminated soil moisture content to 15~30%, stockpiling conserves 1~3 naturally
It；2) it will be mixed by the heavy-metal contaminated soil of step 1) processing with medicament B, and realize the reparation of heavy-metal contaminated soil.
Further, in step 1), 10~30 parts by weight medicament A is put into 70~90 parts by weight water and are uniformly mixed, shape
At suspension；Preferably, suspension and heavy-metal contaminated soil are with weight ratio 1:3~1:6 mixing；Preferably, weight in step 2)
Metallic pollution soil and medicament B are with weight ratio 100:3~100:10 mixing.
Medicament A of the invention uses the industrial residue of the generations such as iron and steel smelting industry for primary raw material, at low cost, and realizes
The comprehensive utilization of waste；The charcoal cation exchange capacity (CEC) that medicament B is used is big, has good heavy metal adsorption effect, together
When it is low in cost, it is cheap and easily-available；Medicament A alkalinity, B slant acidity, medicament A and medicament B's is used in combination, and is able to achieve heavy metal-polluted soil
Fixing-stable, the pH of faintly acid soil can be improved to national standard (less than 9), and soil nutrient structure and matter can be improved
Ground is conducive to subsequent zoology green-recovery.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.Below in conjunction with embodiment, the present invention will be described in detail.
For certain class Rare Earth Mine contaminated soil, soil types belongs to sand loam, and pH is weakly acidic, and the content of organic matter is low,
PH buffer capacity is poor, inventors herein proposes following technical proposal.
A kind of typical embodiment according to the present invention provides a kind of reparation medicament of heavy-metal contaminated soil.The reparation
Medicament includes medicament A and medicament B, wherein medicament A include 30~70wt% of industrial residue, Portland clinker 20~50%,
0~20wt% of 0~15wt% of lime and gypsum；Medicament B include 10~50wt% of charcoal, 30~60wt% of fowl animal excretion,
10~30wt% of agriculture waste residue or waste material, 0~10wt% of 0~10wt% of calcium dihydrogen phosphate and sodium alginate.
Calcium dihydrogen phosphate contains phosphate radical, can strengthen the fixed function to heavy metal.Sodium alginate is natural soil tune
Agent is managed, the formation of soil aggregate structure can be promoted, improves soil internal void space, coordinates solid, liquid, gas proportions in soil
With the adjustable pH of oxalic acid, act on close with animal husbandry excrement, agriculture waste residue or fertilizer.
Medicament A of the invention uses the industrial residue of the generations such as iron and steel smelting industry for primary raw material, at low cost, and realizes
The comprehensive utilization of waste；The charcoal cation exchange capacity (CEC) that medicament B is used is big, has good heavy metal adsorption effect, together
When it is low in cost, it is cheap and easily-available；Medicament A meta-alkalescence, B slant acidity, medicament A and medicament B's is used in combination, and is able to achieve a soil huge sum of money
The fixing-stable of category can improve the pH of faintly acid soil to national standard (less than 9), and can improve soil nutrient structure and matter
Ground is conducive to subsequent zoology green-recovery.
Medicament A is that a kind of glue consolidates powder, is substantially a kind of portland cement.The objects such as blast furnace slag, gypsum, flyash, salt slurry
The effects of matter can be the main component of portland slag cement, be respectively served as aggregate, the activator of cement.According to the present invention one
The typical embodiment of kind, industrial residue are selected from by blast furnace waste residue, industrial cement, industrial waste gypsum, carbide slag, salt slurry and powder
One of groups of compositions such as coal ash are a variety of, these costs of material are low, realize the comprehensive utilization of waste.Preferably, medicament A
Each component is uniformly mixed, can cross 300~500 meshes after grinding, is more conducive to improve medicament specific surface area in this way, promotes medicament and soil
Earth comes into full contact with, and improves fixing-stable effect.
A kind of typical embodiment according to the present invention, medicament B are that each group lease making is mixed, is made after normal temperature fermentation；It is preferred that
, the temperature of normal temperature fermentation is 18~35 DEG C, and the medicament B after fermentation can generate a large amount of soil nutrient structures and quality of improving
Substance promotes plant growth.
A kind of typical embodiment according to the present invention, charcoal are using algae and/or sea grass as carbon source,
2~5h is pyrolyzed under the conditions of starvation, 250~700 DEG C of temperature to obtain；Preferably, algae includes selected from by kelp, purple
One of groups of compositions such as dish, agar and asparagus are a variety of；Preferably, sea grass be thallus laminariae, extra large calamus, halophila oralis,
One of sea God's grass, needle algae, shrimp shape Trentepohlia and Zostera marina etc. are a variety of.Charcoal is made by seaweed or edible seaweed etc., sun from
Sub- exchange capacity is big, has higher heavy metal adsorption effect.
A kind of typical embodiment according to the present invention, agriculture waste residue or waste material are selected from sorghum, corn, sugarcane or sweet potato
Stalk, root or cauline leaf, one of waste or waste residue that starch processing, wine brewing, food processing generate etc. or a variety of, these are former
Expect at low cost, soil nutrient structure and quality can be improved, realize the comprehensive utilization of waste.
A kind of typical embodiment according to the present invention, medicament B further include oxalic acid, and oxalic acid is for adjusting pH.
Preferably, medicament B is handled by granulation, is mixed in the form of solid or semisolid with soil, is conducive in this way
Improve soil permeability, is conducive to the raising of soil microbial community bioactivity and promotes the absorption of Plant To Nutrient element.
A kind of typical embodiment according to the present invention, provides a kind of restorative procedure of heavy-metal contaminated soil.The reparation
Method is repaired using any of the above-described kind of reparation medicament.
Preferably, include the following steps：1) medicament A is put into water, is uniformly mixed, form suspension, it then will be suspended
Liquid is mixed with heavy-metal contaminated soil, adjusts heavy-metal contaminated soil moisture content to 15~30%, stockpiling conserves 1~3 day naturally；
2) it will be mixed by the heavy-metal contaminated soil of step 1) processing with medicament B, and realize the reparation of heavy-metal contaminated soil.
In application method, the mixing of soil and medicament is implemented step by step, the first step is outstanding by heavy-metal contaminated soil and medicament A
Turbid mixing, avoids medicament B to the competitive Adsorption and complexing of medicament A, makes medicament A more fully and in heavy-metal contaminated soil
Heavy metal effect, reduces the usage amount of medicament A；Meanwhile A medicament meta-alkalescence, B medicament slant acidity, the two successively uses can be with
Adjusting faintly acid sandy loam pH is neutrality.Heavy-metal contaminated soil fixes 1~3 day after mixing with medicament A, can be mixed with medicament B
It closes, then can carry out green again, the construction time is short.
It is furthermore preferred that 10~30 parts by weight medicament A are put into 70~90 parts by weight water and are uniformly mixed in step 1), shape
At suspension；Preferably, suspension and heavy-metal contaminated soil are with weight ratio 1:3~1:6 mixing, can also be according to practical soil
Pollution condition carry out ratio adjustment；Preferably, in step 2) heavy-metal contaminated soil and medicament B with weight ratio 100:3~
100:10 mixing, can also carry out ratio adjustment according to the actual situation.
A kind of typical embodiment according to the present invention, the application method of medicament of the invention, different from general medicament
One step mode of averaging, the present invention implement fixing-stable and the soil physico-chemical property improvement of soil in two steps.Firstly, by 10~30
Part medicament A is dissolved in 70~90 parts of water, is uniformly mixed, and suspension is formed, then by suspension and soil with 1:3~1:6 mixing,
Ground moistening degree addition suitable quantity of water is regarded again, makes soil moisture content 15~30%, naturally stockpiling maintenance 1~3 day；Then, native
Earth and medicament B are with 100:3 to 100:10 are uniformly mixed, and realize the reinforcing and soil physico-chemical property and trophic structure of fixing-stable
Improvement.
Beneficial effects of the present invention are further illustrated below in conjunction with embodiment.
Embodiment 1
1. the preparation of medicament A：
Medicament A is that blast-furnace cinder includes 50% blast furnace slag, Portland clinker 20%, and lime 10%, gypsum 20% mix
It closes uniformly, 300 meshes is crossed after grinding.
2. the preparation of charcoal：
Fresh Laminaria Japonica is taken, is dehydrated through sunlight exposure, after moisture content is lower than 20%, is crushed to pulverizer less than 2cm, is put into
Atmosphere furnace.Atmosphere furnace leads to nitrogen with starvation.Setting atmosphere furnace heats up 6 degree per minute, is warming up to 350 degree, keeps 350 degree of perseverances
Temperature 3 hours, then gradually near room temperature, stops logical nitrogen after cooling.It crushes, grinds after taking-up, cross 1mm sieve.Gained sample is
For charcoal.
3. the preparation of medicament B：
Take 40 parts of charcoal；30 parts of chicken manure are taken after drying；25 parts of fresh corn stalk are taken, 1~2cm is crushed to；Take phosphoric acid
5 parts of calcium dihydrogen.The above material uniformly mixes, and water is added to adjust moisture content about 25%.Outdoor stockpiling is fermented 10 days.Then gained is
Medicament B.
4. the adsorption experiment of medicament A：
Rare Earth Mine contaminated soil is first crossed into 2mm sieve, weighs and sieves to obtain soil 80g, be placed in 500mL beaker, adds 0.8g medicine
Agent A mixes, adds water 25mL.After placing for 24 hours.According to solid waste《Solid waste Leaching leaching method hac buffer
Method》(HJ/T 300-2007) carries out leaching experiment to soil using turnover oscillator, detects the content of beary metal in leachate.
Reach through the major pollutants lead in detection soil, zinc, copper concentration《Water environment quality standard》(GB 3838-2002)
Requirement, the results are shown in Table 1.
Table 1
| pH | Pb | Zn | Cu | |
| Before processing (mg/L) | 4.23 | 3.647 | 0.534 | 1.293 |
| After processing (mg/L) | 7.90 | 0.098 | 0.039 | 0.538 |
5. the cation exchange capacity (CEC) of charcoal：
Using in step 2 same procedure prepare kelp, corn stover, poplar wood made from charcoal, carry out sun from
The test of sub- exchange capacity.It the results are shown in Table 2：
Table 2
| Charcoal prepares raw material | Kelp | Stalk | Poplar |
| Cation exchange capacity (CEC) (cmol/kg) | 41.0 | 32.7 | 33.6 |
6. medicament A, B joint repair heavy-metal contaminated soil caused by Rare Earth Mine exploitation
100kg contaminated soil is taken, the suspension 10L containing 10%A medicament is added, adds water 10L, piles mound standing
24h.Then B medicament 6kg is added into soil, is mixed.Soil after mixing is attached in diameter 20cm plastic flowerpot.Flowerpot is placed in
In greenhouse.3 plants of corns, sugar grasses are planted in each flowerpot respectively, periodically watering, weeding, measure plant in every basin after 1 month
Average height.During culture, 20 DEG C of greenhouse temperature on average, average light irradiation time 10h.As a result, it has been found that in untreated soil, part
Plant physiological status is poor, and blade is in yellow.Plant physiological status after processing in soil significantly improves, and is highly higher than untreated
Soil the results are shown in Table 3.
Table 3
| Corn 1 | Corn 2 | Corn 3 | Sorghum 1 | Sorghum 2 | Sorghum 3 | |
| Before processing (cm) | 30 | 25 | 27 | 23 | 24 | 21 |
| After processing (cm) | 42 | 40 | 41 | 39 | 39 | 36 |
Embodiment 2
With 70 parts of slags, 20 parts of Portland clinkers and the mixing of 10 parts of lime stones, it is ground up, sieved medicament A is prepared.
To pelletize after 10 parts of the charcoal of seaweed preparation, 60 parts of fowl and animal excrement, 20 parts of corn stover slag, 10 parts of calcium dihydrogen phosphate mixing.
100kg contaminated soil is taken, addition 25L contains the suspension of 1kg medicament A, piles mound and stands 72h.Then to soil
B medicament 3kg is added in earth, is mixed.Soil after mixing is attached in diameter 20cm plastic flowerpot.Flowerpot is placed in greenhouse.Each
3 plants of corns, sugar grasses are planted in flowerpot respectively, periodically watering, weeding, measure the average height of plant in every basin after 1 month.Training
During supporting, 20 DEG C of greenhouse temperature on average, average light irradiation time 10h.Experimental comparison group is not added with any medicament.As a result, it has been found that place
Plant physiological status after reason in soil significantly improves, and is highly higher than untreated soil, the results are shown in Table 4.
Table 4
| Corn 1 | Corn 2 | Corn 3 | Sorghum 1 | Sorghum 2 | Sorghum 3 | |
| Control group (cm) | 30 | 25 | 27 | 23 | 24 | 21 |
| After processing (cm) | 38 | 38 | 35 | 37 | 35 | 35 |
Embodiment 3
With 30 parts of slags, 50 parts of Portland clinkers and the mixing of 20 parts of gypsum, it is ground up, sieved medicament A is prepared.With
Seaweed preparation 30 parts of charcoal, 30 parts of fowl and animal excrement, 30 parts of corn stover slag, 10 parts of sodium alginate mixing after pelletize.
100kg contaminated soil is taken, addition 25L contains the suspension of 1kg medicament A, piles mound and stands for 24 hours.Then to soil
B medicament 3kg is added in earth, is mixed.Soil after mixing is attached in diameter 20cm plastic flowerpot.Flowerpot is placed in greenhouse.Each
3 plants of corns, sugar grasses are planted in flowerpot respectively, periodically watering, weeding, measure the average height of plant in every basin after 1 month.Training
During supporting, 20 DEG C of greenhouse temperature on average, average light irradiation time 10h.Experimental comparison group is not added with any medicament.As a result, it has been found that place
Plant physiological status after reason in soil significantly improves, and is highly higher than untreated soil, the results are shown in Table 5.
Table 5
| Corn 1 | Corn 2 | Corn 3 | Sorghum 1 | Sorghum 2 | Sorghum 3 | |
| Control group (cm) | 29 | 27 | 26 | 23 | 24 | 21 |
| After processing (cm) | 42 | 41 | 43 | 41 | 39 | 40 |
Embodiment 4
With 30 parts of slags, 50 parts of Portland clinkers and the mixing of 20 parts of gypsum, it is ground up, sieved medicament A is prepared.With
Seaweed preparation 300 parts of charcoal, 30 parts of fowl and animal excrement, 30 parts of corn stover slag, 10 parts of sodium alginate mixing after pelletize.
100kg contaminated soil is taken, addition 25L contains the suspension of 1kg medicament A, piles mound and stands 72h.Then to soil
B medicament 10kg is added in earth, is mixed.Soil after mixing is attached in diameter 20cm plastic flowerpot.Flowerpot is placed in greenhouse.Each
3 plants of corns, sugar grasses are planted in flowerpot respectively, periodically watering, weeding, measure the average height of plant in every basin after 1 month.Training
During supporting, 20 DEG C of greenhouse temperature on average, average light irradiation time 10h.As a result, it has been found that in untreated soil, plant part physiology shape
State is poor, and blade is in yellow.Plant physiological status after processing in soil significantly improves, and is highly higher than untreated soil, as a result
It is shown in Table 6.
Table 6
| Corn 1 | Corn 2 | Corn 3 | Sorghum 1 | Sorghum 2 | Sorghum 3 | |
| Before processing (cm) | 30 | 25 | 27 | 23 | 24 | 21 |
| After processing (cm) | 44 | 43 | 42 | 40 | 40 | 41 |
It can be seen from the above description that the above embodiments of the present invention realize following technical effect：By specific
Method, add lower cost medicament, realize Rare Earth Mine exploitation caused by, in faintly acid, low-concentration heavy metal contaminated soil
The passivation of heavy metal, the heavy metal concentration of soil extract meets water environment quality standard after reparation, soil after reparation
PH also complies with the standard.Meanwhile this method and medicament can improve the content and ratio of soil nutrient elements, promote Polluted Soil
The zoology green-recovery of earth.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (11)
1. a kind of reparation medicament of heavy-metal contaminated soil, which is characterized in that including medicament A and medicament B, wherein the medicament A
Including 30~70wt% of industrial residue, 0~20wt% of Portland clinker 20~50%, 0~15wt% of lime and gypsum；Institute
Stating medicament B includes 10~50wt% of charcoal, 30~60wt% of fowl animal excretion, agriculture waste residue or 10~30wt% of waste material, phosphorus
0~10wt% of 0~10wt% of acid dihydride calcium and sodium alginate.
2. reparation medicament according to claim 1, which is characterized in that the industrial residue is selected from by blast furnace waste residue, work
One of group of industry cement, industrial waste gypsum, carbide slag, slag, salt slurry and flyash composition is a variety of.
3. reparation medicament according to claim 1, which is characterized in that the medicament A each component can after being uniformly mixed, grinding
Cross 300~500 meshes.
4. reparation medicament according to claim 1, which is characterized in that the medicament B is the mixing of each group lease making, normal temperature fermentation
After be made；
Preferably, the temperature of the normal temperature fermentation is 18~35 DEG C.
5. reparation medicament according to claim 1, which is characterized in that the charcoal is using algae and/or sea
Grass is used as carbon source, and 2~5h is pyrolyzed under the conditions of starvation, 250~700 DEG C of temperature and is obtained；
Preferably, the algae includes being selected from one of group being made of kelp, seaweed, agar and asparagus or more
Kind；
Preferably, the sea grass is in thallus laminariae, extra large calamus, halophila oralis, Hai Shencao, needle algae, shrimp shape Trentepohlia and Zostera marina
It is one or more.
6. reparation medicament according to claim 1, which is characterized in that it is described agricultural waste residue or waste material be selected from sorghum, corn,
The stalk of sugarcane or sweet potato, root or cauline leaf, waste or one of waste residue that starch processing, wine brewing, food processing generate or
It is a variety of.
7. reparation medicament according to claim 1, which is characterized in that the medicament B further includes oxalic acid.
8. reparation medicament according to claim 1, which is characterized in that the medicament B is handled by granulation.
9. a kind of restorative procedure of heavy-metal contaminated soil, which is characterized in that using as described in any one of claims 1 to 8
Reparation medicament repaired.
10. restorative procedure according to claim 9, which is characterized in that include the following steps：
1) medicament A is put into water, is uniformly mixed, formed suspension, then mix the suspension with heavy-metal contaminated soil
It closes, adjusts the heavy-metal contaminated soil moisture content to 15~30%, stockpiling conserves 1~3 day naturally；
2) it will be mixed by the heavy-metal contaminated soil of step 1) processing with medicament B, and realize the heavy-metal contaminated soil
Reparation.
11. restorative procedure according to claim 10, which is characterized in that in the step 1), by 10~30 parts by weight institutes
It states medicament A and puts into uniformly mixed in 70~90 parts by weight water, formation suspension；
Preferably, the suspension and the heavy-metal contaminated soil are with weight ratio 1:3~1:6 mixing；
Preferably, heavy-metal contaminated soil described in the step 2) and medicament B are with weight ratio 100:3~100:10 mixing.
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| CN109796988A (en) * | 2019-04-02 | 2019-05-24 | 河北民族师范学院 | The method for producing soil conditioner as raw material using abandoned biomass and carbide slag |
| CN111073660A (en) * | 2019-12-18 | 2020-04-28 | 广东中苗景观有限公司 | Soil bioremediation agent and soil remediation method based on same |
| CN111266400A (en) * | 2020-03-04 | 2020-06-12 | 中国科学院植物研究所 | Method for safely utilizing heavy metal polluted farmland based on combination of biochar in-situ passivation and sweet sorghum planting |
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| CN112263994A (en) * | 2020-09-25 | 2021-01-26 | 东北大学 | Modified biochar and preparation method and application thereof |
| CN113481014A (en) * | 2021-07-15 | 2021-10-08 | 中国科学院沈阳应用生态研究所 | Preparation and application methods of cadmium-polluted soil solid waste base passivator |
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