CN106001098A - Heavy metal repairing material based on organic sludge and use method of material - Google Patents
Heavy metal repairing material based on organic sludge and use method of material Download PDFInfo
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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
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
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- B09C1/00—Reclamation of contaminated soil
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- C09K17/00—Soil-conditioning materials or soil-stabilising materials
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- C—CHEMISTRY; METALLURGY
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- 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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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses a heavy metal repairing material based on organic sludge and a use method of the material. The repairing material is prepared by using organic treatment sludge, mineral materials and a compound stabilizing conditioning agent with the certain proportion as the raw material; and the use method of the material comprises the steps that the heavy metal repairing material based on the organic sludge is added into the heavy metal polluted soil, the mass ratio of the heavy metal repairing material based on the organic sludge to the polluted soil is 1:3-10, water is added for uniform stirring and mixing, and under the conditions that the temperature ranges from 5 DEG C to 45 DEG C, the air humidity ranges from 25% to 90%, and the soil water containing rate ranges from 10% to 60%, standing and aging are carried out for 15 days to 60 days. According to the repairing material, resource utilization of urban sludge can be achieved, heavy metal in the polluted soil can be cured, absorption of crops to the heavy metal is reduced, the soil structure is improved, soil fertility is improved, the poor soil is activated, and the raw material is extremely low in cost. The use method is easy and convenient to operate.
Description
Technical field
The invention belongs to environmental conservation and recovery technique field, be specifically related to a kind of heavy metal based on organic sludge and repair material
Material and using method thereof, this repair materials can be increase soil fertility, moreover it is possible to the heavy metal unit in stable curing contaminated soil
Element.This repair materials is primarily adapted for use in recycling and the heavy metal-polluted soil recovery project of municipal sludge, is particularly well-suited to
Processed by heavy metal pollution lean soil, disposed.
Background technology
Soil is that the mankind are rely activity basis for the survival, and in recent years, the heavy metal pollution problem of China's soil is day by day serious,
Heavy metal in soil is constantly accumulated, and result of study shows, heavy metal in soil total amount can not react heavy metal well
The trend to crops enrichment, only the heavy metal of some form has biological effectiveness.The most solvable,
Exchangeable species heavy metal, can the most absorbed by crops, enrichment, directly threaten health, it may be said that heavy metal-polluted soil is dirty
Dye problem has become as the public's problem received much attention.National environmental protection department is putting into effect after " ten, air ", " ten, water ",
Represent that " ten, soil " is put into effect in being also expected to year.Traditional peripheral doses method (soil removal and replacement, turn over throwing, thermal desorption method etc.) is deposited
Relatively big in quantities, shortcoming costly；Biological concentration (Lumbricus, plant and microorganism enrichment) is utilized to there is reparation work
The shortcomings such as the phase is longer, and adaptability is poor；Traditional chemosetting stabilization method can change heavy metal present in the soil
Form, significantly reduces water-soluble state in soil, exchangeable species and combination state etc. and is prone to the ratio of heavy metal absorbed by crops
Example, therefore chemosetting stabilization method is still that heavy metal repairs the main flow method of disposal that market is the most feasible.
Chinese Patent Application No. is the patent of invention of 201310251933.3, discloses a kind of interpolation biology in organic matter
The heavy metals immobilization agent of mushroom, its formula includes organic matter > 40, living bacteria count > 0.2 hundred million/gram, total nutrient > 5%, energy
While increasing soil fertility solidifying heavy metal-polluted soil, wherein organic matter is fertilizer special for organic, and price is higher,
And the breeding of biology chrysanthemum and repairing efficiency are long, adaptability more limits to.
On the other hand, along with the acceleration of urbanization process, urban wastewater treatment ability is more than 1.5 billion cubic meters/day, day
Produce dewatered sludge more than 100,000 tons.The water-containing sludge how processing these moisture content up to 80% is also urban development
Outstanding problem.According to the literature, existing practical situation, big department mud is without any process, directly to transport outward, to abandon for root
Put or simply landfill or agricultural be main.Existing specific resistance to filtration technology maturation, but method is more single.For weight
The mud that tenor is the lowest, fraction by after compost treatment, can be applied directly to afforestation and agricultural；A part
Directly landfill disposal；A part of mud is adding 10%--65%'s (even 80%, depend on the content of organic matter in mud)
After the chemical agents such as FeCl3-CaO-flyash-kieselguhr, the method using deep dehydration to process, it is allowed to moisture content and is reduced to
Less than 60%, then filling in the refuse landfill of storage capacity anxiety.Existing method is to the heavy metal in mud, cause of disease
Bacterium, stink etc. can not effectively be removed or control, deeply dehydrating sludge, the most also make the amount of dry dramatically increase,
It is not reaching to the original intention of volume reduction and recycling.Thus there is bigger limitation.According to national environmental protection portion in 2008
The sludge reduction that proposes about " urban wastewater treatment firm specific resistance to filtration technical policy (implementation) (exposure draft) ",
Principle is disposed in stabilisation, harmless treatment, in conjunction with China's sludge treatment practical situation, seeks the recycling tool of mud
There is profound significance.
Summary of the invention
For solving the problem that above-mentioned prior art exists, the invention provides a kind of heavy metal based on organic sludge and repair material
Material and preparation method thereof, this repair materials can not only realize the recycling of municipal sludge, moreover it is possible in solidification contaminated soil
Heavy metal, reduce crops heavy metal absorption, improve Soil structure, increase soil fertility, activate barren soil,
And cost of material is the cheapest.
This using method is simple, easy to operate.
Realizing the technical scheme that above-mentioned purpose of the present invention used is:
A kind of heavy metal repair materials based on organic sludge, is prepared from by the raw material of following mass fraction:
Organic process mud 40%-85%
Mineral material 10%-45%
Compounding stable regulation agent 1%-15%,
Described organic process mud is prepared from by following technique: 1) carried out with aerobic digestion process by municipal sludge
Sterilizing and pre-mummification, then filter pressing is dehydrated, and obtains filter cake, and the moisture content of filter cake is 45%-65%；2) by filter cake
Carry out compost, after 30 DEG C of-65 DEG C of bottom fermentations 5-10 days, proceed to ripening 10-15 days in ripening room；3) after ripening completes
Heat drying dehydration reaches less than 30% to moisture content further, obtains organic process mud.
A kind of heavy metal repair materials based on organic sludge, is prepared from by the raw material of following mass fraction:
Organic process mud 50%-65%
Mineral material 30%-40%
Compounding stable regulation agent 5%-10%.
Described mineral material is any two kinds in kieselguhr, meerschaum, zeolite, flyash, slag and limestone
Combination, or the most two or more combinations.
Described compounding stable regulation agent be calcium hydroxide, sodium silicate, dalcium biphosphate, calcium superphosphate, iron sulfate and
Any one in iron chloride, or the most several combinations.
The using method of a kind of heavy metal repair materials based on organic sludge, it is characterised in that comprise the steps:
Above-mentioned heavy metal repair materials based on organic sludge is added in the contaminated soil of heavy metal pollution, wherein based on
The heavy metal repair materials of organic sludge and the mass ratio of contaminated soil are 1:3-10, add water and are uniformly mixed,
Temperature 5 DEG C-45 DEG C, air humidity are 25%-90%, soil moisture content is still aging 15-60 under conditions of 10%-60%
My god.
Compared with prior art, advantages of the present invention and having the beneficial effects that:
1) present invention based on the mud of municipal sewage plant material (height that wherein heavy metal does not exceeds standard is organic
Matter sludge), utilize beneficiating ingredient therein, by forming Metallo-organic complexes, increase Cation Exchange Capacity in Soils,
Reduce the water-soluble state of heavy metal in soil, exchangeable species content, thus reduce the biological effectiveness of heavy metal in soil, simultaneously
Be aided with the inorganic heavy metal renovation agent of coupling, promote wherein soluble state, exchangeable species heavy metal to stabilisations such as residual forms
Form converts, thus realizes Dual Stabilization and the solidification of organic and inorganic composite curing stabilisation.
2) repair materials of the present invention former material based on city Organic Sludge, industrial residue or other common minerals materials
Material, comprehensively utilizes municipal sludge, its basic material wide material sources, cheaply, meets recycling sludge utilization
Principle, has widened the recycling field to municipal sludge；Using mud as the basis of heavy metal repair materials, " with
Dirty pollution treatment ", soil organic matter content can be increased, improve the fertility of soil, moreover it is possible to effectively in solidification and stabilization soil
Heavy metal.
3) preparation method of the repair materials of the present invention is simple, and easy to operate, performance is controlled, it is easy to promote in each city.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
For the repairing effect of Accurate Determining heavy metal of the present invention contaminated soil, the present invention uses simulating pollution soil and reality
Contaminated soil does repairing test respectively, uses " standard of soil environment quality GB15618-1995 ", " toxicity from solid waste leaching
Go out method HJ/T 299-2007 ", method of regulation measures contaminated soil weight in " agricultural industry criteria NY/T 1377-2007 "
Tenor, Leaching of Heavy Metals amount, pH value and the content of organic matter.
Simulation soil takes from hillside, Wuhan, belongs to not comtaminated soil, is placed on the artificial heavy metal waste liquid that adds and infiltrates 7 days,
Rear interpolation soluble metal salt, makes simulating pollution soil, through conversion, each heavy metal Cd in simulating pollution soil, Cr, Pb,
Zn, Cu content is all about 100mg Kg-1。
Actual contaminated soil takes from agricultural land, suburbs, Wuhan by heavy-metal contaminated soil.
Embodiment 1
A kind of heavy metal repair materials based on organic sludge, is prepared from by the raw material of following mass fraction:
Organic process mud 40%
Mineral material 45%
Compounding stable regulation agent 15%.
Described organic process mud is prepared from by following technique: 1) carried out with aerobic digestion process by municipal sludge
Processing, then filter pressing is dehydrated, and obtains filter cake, and the moisture content of filter cake is 60%；2) filter cake is carried out compost,
45 DEG C of bottom fermentations, after 5 days, proceed to carry out ripening, sterilizing worm's ovum in ripening room, ripening 10 days；3) after ripening completes
Mummification dehydration reaches 20% to moisture content further, obtains organic process mud.
Mineral material is made up of limestone, slag and zeolite, and wherein the mass ratio of limestone, slag and zeolite is 1:7:2.
Compounding stable regulation agent is made up of calcium hydroxide, sodium silicate, dalcium biphosphate and iron sulfate, wherein calcium hydroxide,
The mass ratio of sodium silicate, dalcium biphosphate and iron sulfate is 6:2:1:1.
The preparation method of above-mentioned heavy metal repair materials based on organic sludge, the steps include:
1) organic process mud, mineral material and compounding stable regulation agent are weighed according to above-mentioned proportioning；
2) organic process mud, mineral material and compounding stable regulation agent are joined in planetary ball mill, be ground to
Particle diameter is 120 mesh, obtains this heavy metal repair materials based on organic sludge.
Experiment one, the repairing effect test of the heavy metal repair materials based on organic sludge of the present embodiment
Weigh simulating pollution soil, actual contaminated soil 1000g respectively, then weigh respectively 200g the present embodiment based on having
The heavy metal repair materials of machine mud, is mixed into the layering of a copy of it heavy metal repair materials in simulating pollution soil, is sprinkled into
A small amount of water with turner mix homogeneously, mix, temperature be 40 DEG C, air humidity be 90%, soil moisture content exists
Under conditions of 30% still aging 7 days, Leaching of Heavy Metals amount, pH value before and after detection simulating pollution soil remediation and have
The change of the indexs such as machine matter；Another part of heavy metal repair materials layering is mixed in actual contaminated soil, is sprinkled into a small amount of water also
With turner mix homogeneously, mix, temperature be 40 DEG C, air humidity be 90%, soil moisture content 30% condition
Under still aging 7 days, detect Leaching of Heavy Metals amount, pH value and organic matter before and after actual contaminated soil remediation etc. and refer to
Target changes.
The change of Leaching of Heavy Metals amount, pH value and organic matter before and after simulating pollution soil remediation is as shown in table 1:
As can be seen from Table 1, simulating pollution soil is repaired through the heavy metal repair materials based on organic sludge of the present embodiment
After, the content of heavy metal element Cd, Cr, Pb, Zn and Cu therein significantly declines, and soil pH value is also by acidity
Becoming neutral, the content of soil with organic matter has promoted.
The change of Leaching of Heavy Metals amount, pH value and organic matter before and after actual contaminated soil remediation is as shown in table 2:
As can be seen from Table 2, actual contaminated soil is repaired through the heavy metal repair materials based on organic sludge of the present embodiment
After, the content of heavy metal element Cd, Cr, Pb, Zn and Cu therein significantly declines, and soil pH value is also by strong acid
Property become neutral, the content of soil with organic matter has promoted.
Embodiment 2
A kind of heavy metal repair materials based on organic sludge, is prepared from by the raw material of following mass fraction:
Organic process mud 65%
Mineral material 30%
Compounding stable regulation agent 5%.
Described organic process mud is prepared from by following technique: 1) carried out with aerobic digestion process by municipal sludge
Processing, then filter pressing is dehydrated, and obtains filter cake, and the moisture content of filter cake is 55%；2) filter cake is carried out compost,
35 DEG C of bottom fermentations, after 8 days, proceed to carry out ripening, sterilizing worm's ovum in ripening room, ripening 15 days；3) after ripening completes
Mummification dehydration reaches 10% to moisture content further, obtains organic process mud.
Mineral material is made up of limestone, slag and meerschaum, and wherein the mass ratio of limestone, slag and meerschaum is
2:7:1。
Compounding stable regulation agent is made up of calcium hydroxide, sodium silicate, dalcium biphosphate and iron sulfate, wherein calcium hydroxide,
The mass ratio of sodium silicate, dalcium biphosphate and iron sulfate is 6:2:1:1.
The preparation method of above-mentioned heavy metal repair materials based on organic sludge, the steps include:
1) organic process mud, mineral material and compounding stable regulation agent are weighed according to above-mentioned proportioning；
2) organic process mud, mineral material and compounding stable regulation agent are joined in planetary ball mill, be ground to
Particle diameter is 200 mesh, obtains this heavy metal repair materials based on organic sludge.
Experiment two, the repairing effect test of the heavy metal repair materials based on organic sludge of the present embodiment
Weigh simulating pollution soil, actual contaminated soil 1000g respectively, then weigh respectively 150g the present embodiment based on having
The heavy metal repair materials of machine mud, is mixed into the layering of a copy of it heavy metal repair materials in simulating pollution soil, is sprinkled into
A small amount of water with turner mix homogeneously, mix, temperature be 25 DEG C, air humidity be 65%, soil moisture content exists
Under conditions of 40% still aging 7 days, Leaching of Heavy Metals amount, pH value before and after detection simulating pollution soil remediation and have
The change of the indexs such as machine matter；Another part of heavy metal repair materials layering is mixed in actual contaminated soil, is sprinkled into a small amount of water also
With turner mix homogeneously, mix, temperature be 25 DEG C, air humidity be 65%, soil moisture content 40% condition
Under still aging 7 days, detect Leaching of Heavy Metals amount, pH value and organic matter before and after actual contaminated soil remediation etc. and refer to
Target changes.
The change of Leaching of Heavy Metals amount, pH value and organic matter before and after simulating pollution soil remediation is as shown in table 3:
As can be seen from Table 3, simulating pollution soil is repaired through the heavy metal repair materials based on organic sludge of the present embodiment
After, the content of heavy metal element Cd, Cr, Pb, Zn and Cu therein significantly declines, and soil pH value is also by acidity
Becoming neutral, the content of soil with organic matter has promoted.
The change of Leaching of Heavy Metals amount, pH value and organic matter before and after actual contaminated soil remediation is as shown in table 4:
As can be seen from Table 2, actual contaminated soil is repaired through the heavy metal repair materials based on organic sludge of the present embodiment
After, the content of heavy metal element Cd, Cr, Pb, Zn and Cu therein significantly declines, and soil pH value is also by strong acid
Property becomes close to neutral, and the content of soil with organic matter the most significantly promotes.
Embodiment 3
A kind of heavy metal repair materials based on organic sludge, is prepared from by the raw material of following mass fraction:
Organic process mud 85%
Mineral material 14%
Compounding stable regulation agent 1%.
Described organic process mud is prepared from by following technique: 1) carried out with aerobic digestion process by municipal sludge
Processing, then filter pressing is dehydrated, and obtains filter cake, and the moisture content of filter cake is 45%；2) filter cake is carried out compost,
45 DEG C of bottom fermentations, after 10 days, proceed to carry out ripening, sterilizing worm's ovum in ripening room, ripening 10 days；3) ripening completes
The rear dehydration of mummification further reaches 20% to moisture content, obtains organic process mud.
Mineral material is made up of limestone, slag and zeolite, and wherein the mass ratio of limestone, slag and zeolite is 2:5:3.
Compounding stable regulation agent is made up of calcium hydroxide, sodium silicate, dalcium biphosphate and iron sulfate, wherein calcium hydroxide,
The mass ratio of sodium silicate, dalcium biphosphate and iron sulfate is 6:2:1:1.
The preparation method of above-mentioned heavy metal repair materials based on organic sludge, the steps include:
1) organic process mud, mineral material and compounding stable regulation agent are weighed according to above-mentioned proportioning；
2) organic process mud, mineral material and compounding stable regulation agent are joined in planetary ball mill, be ground to
Particle diameter is 60 mesh, obtains this heavy metal repair materials based on organic sludge.
Experiment three, the repairing effect test of the heavy metal repair materials based on organic sludge of the present embodiment
Weigh simulating pollution soil, actual contaminated soil 1000g respectively, then weigh respectively 300g the present embodiment based on having
The heavy metal repair materials of machine mud, is mixed into the layering of a copy of it heavy metal repair materials in simulating pollution soil, is sprinkled into
A small amount of water with turner mix homogeneously, mix, temperature be 20 DEG C, air humidity be 45%, soil moisture content exists
Under conditions of 25% still aging 7 days, Leaching of Heavy Metals amount, pH value before and after detection simulating pollution soil remediation and have
The change of the indexs such as machine matter；Another part of heavy metal repair materials layering is mixed in actual contaminated soil, is sprinkled into a small amount of water also
With turner mix homogeneously, mix, temperature be 20 DEG C, air humidity be 45%, soil moisture content 25% condition
Under still aging 7 days, detect Leaching of Heavy Metals amount, pH value and organic matter before and after actual contaminated soil remediation etc. and refer to
Target changes.
The change of Leaching of Heavy Metals amount, pH value and organic matter before and after simulating pollution soil remediation is as shown in table 5:
As can be seen from Table 5, simulating pollution soil is repaired through the heavy metal repair materials based on organic sludge of the present embodiment
After, the content of heavy metal element Cd, Cr, Pb, Zn and Cu therein significantly declines, and soil pH value is also by acidity
Becoming neutral, the content of soil with organic matter the most significantly promotes.
The change of Leaching of Heavy Metals amount, pH value and organic matter before and after actual contaminated soil remediation is as shown in table 6:
As can be seen from Table 6, actual contaminated soil is repaired through the heavy metal repair materials based on organic sludge of the present embodiment
After, the content of heavy metal element Cd, Cr, Pb, Zn and Cu therein significantly declines, and soil pH value is also by strong acid
Property become neutral, the content of soil with organic matter the most significantly promotes.
Embodiment 4
A kind of heavy metal repair materials based on organic sludge, is prepared from by the raw material of following mass fraction:
Organic process mud 50%
Mineral material 40%
Compounding stable regulation agent 10%.
Described organic process mud is prepared from by following technique: 1) carried out with aerobic digestion process by municipal sludge
Processing, then filter pressing is dehydrated, and obtains filter cake, and the moisture content of filter cake is 65%；2) filter cake is carried out compost,
55 DEG C of bottom fermentations, after 5 days, proceed to carry out ripening, sterilizing worm's ovum in ripening room, ripening 15 days；3) after ripening completes
Mummification dehydration reaches 30% to moisture content further, obtains organic process mud.
Mineral material is made up of limestone, slag and kieselguhr, and wherein limestone, slag and diatomaceous mass ratio are
2:4:4。
Compounding stable regulation agent is made up of calcium hydroxide, sodium silicate, dalcium biphosphate and iron sulfate, wherein calcium hydroxide,
The mass ratio of sodium silicate, dalcium biphosphate and iron sulfate is 6:2:1:1.
The preparation method of above-mentioned heavy metal repair materials based on organic sludge, the steps include:
1) organic process mud, mineral material and compounding stable regulation agent are weighed according to above-mentioned proportioning；
2) organic process mud, mineral material and compounding stable regulation agent are joined in planetary ball mill, be ground to
Particle diameter is 240 mesh, obtains this heavy metal repair materials based on organic sludge.
Experiment four, the repairing effect test of the heavy metal repair materials based on organic sludge of the present embodiment
Weigh simulating pollution soil, actual contaminated soil 1000g respectively, then weigh respectively 200g the present embodiment based on having
The heavy metal repair materials of machine mud, is mixed into the layering of a copy of it heavy metal repair materials in simulating pollution soil, is sprinkled into
A small amount of water with turner mix homogeneously, mix, temperature be 15 DEG C, air humidity be 80%, soil moisture content exists
Under conditions of 40% still aging 7 days, Leaching of Heavy Metals amount, pH value before and after detection simulating pollution soil remediation and have
The change of the indexs such as machine matter；Another part of heavy metal repair materials layering is mixed in actual contaminated soil, is sprinkled into a small amount of water also
With turner mix homogeneously, mix, temperature be 15 DEG C, air humidity be 80%, soil moisture content 40% condition
Under still aging 7 days, detect Leaching of Heavy Metals amount, pH value and organic matter before and after actual contaminated soil remediation etc. and refer to
Target changes.
The change of Leaching of Heavy Metals amount, pH value and organic matter before and after simulating pollution soil remediation is as shown in table 7:
As can be seen from Table 7, simulating pollution soil is repaired through the heavy metal repair materials based on organic sludge of the present embodiment
After, the content of heavy metal element Cd, Cr, Pb, Zn and Cu therein significantly declines, and soil pH value is also by acidity
Becoming neutral, the content of soil with organic matter the most significantly promotes.
The change of Leaching of Heavy Metals amount, pH value and organic matter before and after actual contaminated soil remediation is as shown in table 8:
As can be seen from Table 8, actual contaminated soil is repaired through the heavy metal repair materials based on organic sludge of the present embodiment
After, the content of heavy metal element Cd, Cr, Pb, Zn and Cu therein significantly declines, and soil pH value is also by strong acid
Property become neutral, the content of soil with organic matter the most significantly promotes.
In sum, repair can not only an effective huge sum of money in contaminated soil for the heavy metal repair materials based on organic sludge of the present invention
Belong to；The Leaching of ion, and the pH value of soil and organic content can be improved, improve soil function, raising
Soil fertility.
Claims (5)
1. a heavy metal repair materials based on organic sludge, it is characterised in that by the raw material preparation of following mass fraction
Become:
Organic process mud 40%-85%
Mineral material 10%-45%
Compounding stable regulation agent 1%-15%,
Described organic process mud is prepared from by following technique: 1) carried out with aerobic digestion process by municipal sludge
Sterilizing and pre-mummification, then filter pressing is dehydrated, and obtains filter cake, and the moisture content of filter cake is 45%-65%；2) by filter cake
Carry out compost, after 30 DEG C of-65 DEG C of bottom fermentations 5-10 days, proceed to ripening 10-15 days in ripening room；3) after ripening completes
Heat drying dehydration reaches less than 30% to moisture content further, obtains organic process mud.
Heavy metal repair materials based on organic sludge the most according to claim 1, it is characterised in that:
Organic process mud 50%-65%
Mineral material 30%-40%
Compounding stable regulation agent 5%-10%.
Heavy metal repair materials based on organic sludge the most according to claim 1, it is characterised in that: described ore deposit
Thing material is the combination of any two kinds in kieselguhr, meerschaum, zeolite, flyash, slag and limestone, or appoints
Anticipate two or more combinations.
Heavy metal repair materials based on organic sludge the most according to claim 1, it is characterised in that: described answers
Joining stable regulation agent is appointing in calcium hydroxide, sodium silicate, dalcium biphosphate, calcium superphosphate, iron sulfate and iron chloride
Meaning one, or the most several combinations.
5. the using method of the heavy metal repair materials based on organic sludge described in a claim 1, it is characterised in that
Comprise the steps:
Heavy metal repair materials based on organic sludge described in claim 1 is added the contaminated soil of heavy metal pollution
In, wherein heavy metal repair materials based on organic sludge is 1:3-10 with the mass ratio of contaminated soil, adds water and stirs
Mix homogeneously, temperature 5 DEG C-45 DEG C, air humidity be 25%-90%, soil moisture content be 10%-60% under conditions of quiet
Put ageing 15-60 days.
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| CN108176707A (en) * | 2017-12-28 | 2018-06-19 | 广东省矿产应用研究所 | Lead-cadmium composite polluted soil in-situ passivator and preparation method thereof |
| CN108246793A (en) * | 2018-02-27 | 2018-07-06 | 苏州逸纪杰电子科技有限公司 | A kind of heavy-metal contaminated soil renovation agent and preparation method thereof |
| CN108341565A (en) * | 2018-03-07 | 2018-07-31 | 李大川 | A kind of detergent of municipal sludge and preparation method thereof |
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| CN112354521A (en) * | 2020-11-17 | 2021-02-12 | 昆明理工大学 | Method for enhancing copper ion adsorption of sepiolite by using soluble organic matters |
| CN113416551A (en) * | 2021-05-28 | 2021-09-21 | 浙江问源环保科技股份有限公司 | Heavy metal contaminated soil composite repairing agent produced by using agricultural and sewage transport and maintenance wastes and preparation method thereof |
| CN114515565A (en) * | 2022-02-21 | 2022-05-20 | 常州市五洲环保科技有限公司 | Soil conditioner and preparation method thereof |
| RU2803894C1 (en) * | 2022-11-02 | 2023-09-21 | Федеральное государственное бюджетное научное учреждение "Всероссийский научно-исследовательский институт агрохимии имени Д.Н. Прянишникова" | Method for detoxifying soil contaminated with heavy metals |
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