CN104418560B - Curing agent for treating heavy metal pollution and heavy metal curing method - Google Patents
Curing agent for treating heavy metal pollution and heavy metal curing method Download PDFInfo
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Abstract
The invention relates to a curing agent for treating heavy metal pollution and a heavy metal curing method. The curing agent is prepared from following raw materials, by mass, 30-70 parts of a curing framework material, 20-60 parts of a curing cementing material and 5-10 parts of a curing promoter. The curing framework material is at least one of fly ash, blast furnace slag, carbide slag and calcined coal gangue powder; the curing cementing material is at least one of ordinary Portland cement and lime; and the curing promoter is at least one of potassium hydrogen phosphate, sodium hydrogen phosphate and aluminum sulfate. The heavy metal curing method includes following steps: mixing the curing agent, solid waste and water with stirring into paste to form a curing body, wherein a usage amount of the curing agent accounts for 30-50% of the dry weight of the solid waste; and maintaining the mixed curing body at normal temperature under a relative humidity of 90% for at least seven days, thereby finishing the heavy metal curing process. By means of the curing agent and the heavy metal curing method, a heavy metal curing efficiency is high and a treatment cost is low.
Description
Technical field
The present invention relates to solid waste pollution administers field, it is used for administering solid waste heavy metal pollution particularly to one kind
Firming agent and heavy metals immobilization method.
Background technology
The pollution control of solid waste is one of emphasis and difficult point of the current efforts at environmental protection of China, particularly discarded smelting ore deposit
Slag, incineration of refuse flyash, industrial wastewater sludge etc. contain the solid waste of heavy metal, if mishandling, will be to water body, air and soil
Earth causes severe contamination, or even the serious threat people is physically and mentally healthy.But because heavy metal is non-degradable in the environment,
Easily there is form and the change of valence state, its activity, animal migration, bio-toxicity also have very big difference under different environmental conditions,
Therefore, Heavy Metal Pollution Control is very difficult.
Existing Heavy Metal Pollution Control technology species is various, generally can be divided into physical method, chemical method, biology side
Method, but limited by aspects such as treatment cost, improvement cycle and regulation effects, and most of Treatment process only rest on laboratory
Conceptual phase, really applying most on Practical Project is heavy metals immobilization treatment technology.Heavy metals immobilization treatment technology refers to
With method physically or chemically, the toxic heavy metal in soil is fixed up, or heavy metal is changed into chemical property not
Active form, the process such as stops it from migrating in the environment, spreads, thus reducing the recovery technique of the murder by poisoning degree of heavy metal.
Based on heavy metals immobilization treatment technology, have developed various heavy firming agent both at home and abroad.These firming agent are big
How with cement and Calx as major gelled material, both account for more than the 50% of curing agent component.In addition some firming agent are also had to add
As auxiliary, heavy metal has certain adsorption to the adsorbing material of high molecular.But, these firming agent generally existings are used
Amount big (ratio of firming agent and solid waste is even up to 1:1), high cost (industrial chemical need to be purchased), the resistance to compression of firming body
The character such as intensity, impact resistance, anti-immersion and freeze-thaw resistance are undesirable, the shortcomings of prolonged curing effect difference.
The Chinese patent of cn101921090a discloses a kind of heavy metal pollution bottle sediment curing agent and its curing, used
Firming agent includes flyash and cement, and mass ratio is 1:(0.5～11), hardener dose is 0.4～1.5 times of bed mud, maintenance
Time is more than 25 days.The Chinese patent of cn102989741a discloses a kind of preparation side of heavy metal solid waste firming agent
Method, the composition of firming agent used, dead burned magnesia powder 30～45%, potassium dihydrogen phosphate 25～30%, Borax 3～5%, flyash 8～
10%, heavy metal solid waste 19～25%, treatment cost is higher.The Introduction To Cn Patent of application number cn200910312110.0
Environmental protection soil-solidified-agent with trade waste as main material and its using method, the trade waste that this firming agent uses
Including flyash, blast-furnace cinder or silicon powder, content is 40～70%, in addition adds pre-gelatinized starch 10～30%, polyacrylic acid
Sodium 10～30%.This firming agent and water are mixed into mud shape and spray and construction surface, with curing soil and can plant green plants,
But the solidification effect of heavy metal is not good, under acid condition, heavy metal dissolution again.
Therefore, during heavy metals immobilization, how to reduce firming agent usage amount, reduce processing cost, improve weight simultaneously
The solidification effect of metal, reduces its Leaching (Leaching especially in acid condition), repaiies for heavy metals immobilization
Recovering technology has particularly important actual application value.
Content of the invention
The technical problem to be solved is, larger for heavy metals immobilization agent usage amount in prior art, processes
Relatively costly, and curing efficiency is notable the problems such as, provide a kind of consumption few, the huge sum of money that processing cost is low and curing efficiency is higher
Belong to firming agent and curing.
The technical solution adopted for the present invention to solve the technical problems is: prepares one kind and is used for administering a huge sum of money in solid waste
Belong to the firming agent of pollution, firming agent includes the solidification gelling material of the solidification framework material of 30～70 mass parts, 20～60 mass parts
Material, the curing accelerator of 5～10 mass parts.
The present invention provide firming agent in it is preferable that solidification framework material include flyash, blast-furnace cinder, carbide slag,
One or more of calcining coal gangue powder；Solidification Binder Materials include one of Portland cement, Calx or two kinds；
Curing accelerator include potassium hydrogen phosphate, dibastic sodium phosphate, aluminum sulfate one or more.
It is preferable that solidification framework material is 40～60 mass parts in the firming agent that the present invention provides, solidify Binder Materials
For 30～40 mass parts.
It is preferable that solidification Binder Materials also include additive in the firming agent that the present invention provides, additive contains boiling
One or more of high adsorbing clays mineral such as stone, kieselguhr, bentonite, meerschaum, Kaolin, montmorillonite, as a huge sum of money
Belong to adsorbing material；Additive is 0～10 mass parts of firming agent.
It is preferable that the proportion of solidification framework material is more than or equal to solidification gelling material in the firming agent that the present invention provides
The proportion of material.
It is preferable that the raw material of solidification framework material, solidification Binder Materials is Industry Waste in the firming agent that the present invention provides
Gurry and natural minerals, all levigate mistake 60 mesh sieve.
Present invention also offers a kind of heavy metals immobilization method for administering heavy metal pollution in solid waste, the method
Comprise the steps:
S1, by 30～70 mass parts solidification framework material and 20～60 mass parts the levigate mistake of solidification Binder Materials 60 mesh
After sieve, it is sufficiently mixed with the curing accelerator of 5～10 mass parts, prepare above-mentioned firming agent；
S2, firming agent is mixed with solid waste, the consumption of firming agent is 30～50%, Ran Houjia of solid waste dry weight
Enter water and stir into pasty state, form firming body；
S3, at least maintenance 6 days under 16 DEG C～35 DEG C, relative humidity 80% conditions above by mixed firming body, that is, complete
Become solid waste heavy metals immobilization processing procedure.
The present invention provide heavy metals immobilization method in it is preferable that firming body temperature be 20 DEG C～30 DEG C, relatively wet
Maintenance under the conditions of degree 90% completes heavy metals immobilization process in 7 days.
It is preferable that selecting the blast-furnace cinder of 40 mass parts, 20 mass parts in the heavy metals immobilization method that the present invention provides
Calcining coal gangue powder, the Calx of 20 mass parts, the Portland cement of 10 mass parts, the bentonite of 10 mass parts, 5 mass
Part aluminum sulfate and the dibastic sodium phosphate of 5 mass parts, blast-furnace cinder and the thin mistake of calcining coal gangue grinding 60 mesh sieve are filled with other five
Divide and be mixed with described firming agent；Described firming agent is pressed 50% addition of dump slag weight, mixing and stirring, Ran Houjia
Enter water mix and become pasty state；Under the conditions of room temperature, relative humidity 90%, maintenance completes heavy metals immobilization process in 6 days.
It is preferable that from the flyash of 20 mass parts, 30 mass parts in the heavy metals immobilization method that the present invention provides
Blast-furnace cinder, the Calx of 40 mass parts, the kieselguhr of 5 mass parts, the zeolite of 5 mass parts, 5 mass parts potassium hydrogen phosphates and 5 mass
Part aluminum sulfate, flyash and the levigate mistake of blast-furnace cinder 60 mesh sieve is sufficiently mixed with other five and prepares described firming agent；By institute
State 40% addition that firming agent is gushed bed mud weight by river, mixing and stirring, be subsequently adding water mix and become pasty state；In room temperature, relatively
Under the conditions of humidity 90%, maintenance completes heavy metals immobilization process in 7 days.
Implement heavy metals immobilization agent and its using method that the present invention provides, following beneficial effect can be reached: due to this
There is provided heavy metals immobilization agent primary raw material is provided and adopts trade waste and natural minerals, administering the same of heavy metal pollution
When dissolved trade waste, realize the treatment of wastes with processes of wastes against one another.And raw material sources are extensive, with low cost, consumption is few, can effectively reduce
Solid waste heavy metals immobilization processing cost, realizes the large-scale application in engineering.The heavy metals immobilization providing according to the present invention
Agent, by solidifying the rational proportion of framework material, solidification Binder Materials, curing accelerator, has heavy metals immobilization and stabilisation concurrently
Double effects, heavy metal not only can be sealed up for safekeeping inside firming body, and it is stable so that heavy metal is formed by molecular linkage
Precipitation and crystalline solid, reduce its activity.It is this that by molecular linkage effect, the heavy metal precipitation being formed and crystalline solid are non-
Often stable, even if being less than under 3.0 acid condition in ph value, heavy metal is not easy to dissolution, thus substantially reducing in firming body
Leaching of Heavy Metals risk, really realize solid waste heavy metal innoxious/stabilisation safe disposal.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
A kind of firming agent for administering solid waste heavy metal pollution providing according to the present invention, by 30～70 mass parts
Solidification framework material, the solidification Binder Materials of 20～60 mass parts, 5～10 mass parts curing accelerator form.Wherein, it is subject to
The solid waste of heavy metal pollution mainly includes discarded smelting slag, incineration of refuse flyash, industrial wastewater sludge etc..In this enforcement
In a kind of firming agent for administering solid waste heavy metal pollution that example provides, comprise to solidify framework material, solidification gelling material
Material and curing accelerator.Wherein, solidification framework material be flyash, blast-furnace cinder, carbide slag, in calcining coal gangue powder at least
A kind of；Solidification Binder Materials are Portland cement, at least one in Calx；Solidification Binder Materials also include interpolation
Agent, additive contains in the high adsorbing clays mineral such as zeolite, kieselguhr, bentonite, meerschaum, Kaolin, montmorillonite at least
One kind, they can improve heavy metals immobilization effect as heavy-metal adsorption material；Curing accelerator can be phosphoric acid
At least one in hydrogen potassium, dibastic sodium phosphate, aluminum sulfate, for accelerating solidification, shortens cure cycle.
During implementing, above-mentioned solidification framework material, the primary raw material of solidification Binder Materials adopt Industry Waste
Gurry and natural minerals, for ensureing curing materials mix homogeneously and improving heavy metals immobilization efficiency, raw material is all levigate mistake 60 mesh sieve.
In the firming agent for administering solid waste heavy metal pollution that another embodiment of the present invention provides, with above-mentioned reality
Applying solidification framework material unlike example is 40～60 mass parts, and solidification Binder Materials are 30～40 mass parts.
For implementing the cured of heavy metal, present invention also offers one kind be used for administering heavy metal-polluted in solid waste
The heavy metals immobilization method of dye, comprises the steps:
S1, by 30～70 mass parts solidification framework material and 20～60 mass parts the levigate mistake of solidification Binder Materials 60 mesh
After sieve, it is sufficiently mixed with the curing accelerator of 5～10 mass parts, prepare above-mentioned firming agent；
S2, described firming agent is mixed with solid waste, the consumption of described firming agent be solid waste dry weight 30～
50%, it is subsequently adding water and stirs into pasty state, form firming body；
S3, at least maintenance 6 days under 16 DEG C～35 DEG C, relative humidity 80% conditions above by mixed firming body, that is, complete
Become solid waste heavy metals immobilization processing procedure.
Preferably, firming body temperature be 20 DEG C～30 DEG C, under the conditions of relative humidity 90% maintenance to complete within 7 days heavy metal solid
Change process.
Describe to above overview the formula of firming agent and the heavy metals immobilization method of the present invention, for the skill to the present invention
Art feature, purpose and effect are more clearly understood from, and with reference to specific embodiment, further illustrate the present invention.
Embodiment 1
Process discarded smelting slag using the heavy metals immobilization agent of the present invention.Recording leachability copper content in slag is
9.82mg/kg, leachability lead content is 1.69mg/kg.
According to the formula of heavy metals immobilization agent that the present embodiment provides be: the flyash of 60 mass parts, 30 mass parts general
Logical portland cement, the potassium hydrogen phosphate of 10 mass parts, by levigate for flyash mistake 60 mesh sieve with addition both are sufficiently mixed.
Above-mentioned heavy metals immobilization agent is pressed 30% addition of dump slag weight, mixing and stirring, be subsequently adding water mix
Become pasty state.Maintenance 7 days under the conditions of room temperature, relative humidity 90%.After 7 days, with reference to gb5086.2-1997, " solid waste leaches poison
Property leaching method-horizontal vibration method " content of leachability copper and lead in standard detection firming body.Result shows, soaks in firming body
The content of going out property copper is 1.57mg/kg, and leachability lead content is 0.31mg/kg, compared with original slag, decreases respectively
84.0% and 81.2%.Illustrate that this heavy metals immobilization agent has remarkable result to reducing Leaching Heavy Metals in dump slag.
Embodiment 2
Cured object is all the dump slag in embodiment 1.
The formula of heavy metals immobilization agent is: the carbide slag of 60 mass parts, the Calx of 30 mass parts, the phosphoric acid hydrogen of 10 mass parts
Sodium, by levigate for carbide slag mistake 60 mesh sieve with addition both are sufficiently mixed.
Above-mentioned heavy metals immobilization agent is pressed 30% addition of dump slag weight, mixing and stirring, be subsequently adding water mix
Become pasty state.Maintenance 7 days under the conditions of room temperature, relative humidity 90%.After 7 days, with reference to gb5086.2-1997, " solid waste leaches poison
Property leaching method-horizontal vibration method " content of leachability copper and lead in standard detection firming body.Result shows, soaks in firming body
The content of going out property copper is 1.88mg/kg, and leachability lead content is 0.45mg/kg, compared with original slag, decreases respectively
80.9% and 73.4%.Illustrate that this heavy metals immobilization agent has remarkable result to reducing Leaching Heavy Metals in dump slag.
Embodiment 3
Process object is all the dump slag in embodiment 1.
The formula of heavy metals immobilization agent is: the blast-furnace cinder of 55 mass parts, the Calx of 30 mass parts, the swelling of 10 mass parts
Soil, 5 mass parts aluminum sulfate, levigate for blast-furnace cinder mistake 60 mesh sieve is sufficiently mixed with other three.
Above-mentioned heavy metals immobilization agent is pressed 30% addition of dump slag weight, mixing and stirring, be subsequently adding water mix
Become pasty state.Maintenance 7 days under the conditions of room temperature, relative humidity 90%.After 7 days, with reference to gb5086.2-1997, " solid waste leaches poison
Property leaching method-horizontal vibration method " content of leachability copper and lead in standard detection firming body.Result shows, soaks in firming body
The content of going out property copper is 0.94mg/kg, and leachability lead content is 0.26mg/kg, compared with original slag, decreases respectively
90.4% and 84.6%.Illustrate to add the solidification effect of the high adsorbing clays mineral heavy metal such as bentonite in heavy metals immobilization agent
More notable.
Embodiment 4
Process object is all the dump slag in embodiment 1.
The formula of heavy metals immobilization agent is: the blast-furnace cinder of 40 mass parts, the calcining coal gangue powder of 20 mass parts, 20 mass
The Calx of part, the Portland cement of 10 mass parts, the phosphorus of the bentonite of 10 mass parts, 5 mass parts aluminum sulfate and 5 mass parts
Sour hydrogen sodium, blast-furnace cinder and the thin mistake of calcining coal gangue grinding 60 mesh sieve are sufficiently mixed with other five.
Above-mentioned heavy metals immobilization agent is pressed 50% addition of dump slag weight, mixing and stirring, be subsequently adding water mix
Become pasty state.Maintenance 6 days under the conditions of room temperature, relative humidity 90%.After 6 days, with reference to gb5086.2-1997, " solid waste leaches poison
Property leaching method-horizontal vibration method " content of leachability copper and lead in standard detection firming body.Result shows, soaks in firming body
The content of going out property copper is 0.74mg/kg, and leachability lead content is 0.10mg/kg, compared with original slag, decreases respectively
92.5% and 94.1%.Illustrate to add the solidification effect of the high adsorbing clays mineral heavy metal such as bentonite in heavy metals immobilization agent
More notable.
Embodiment 5
Processed using the heavy metals immobilization agent of the present invention and gushed bed mud by heavy metal pollution river.Record leachability zinc in bed mud to contain
Measure as 14.37mg/kg, leachability nickel content is 3.42mg/kg,.
The formula of heavy metals immobilization agent is: the flyash of 50 mass parts, the Portland cement of 30 mass parts, 10 mass
The zeolite of part, 10 mass parts aluminum sulfate, levigate for flyash mistake 60 mesh sieve is sufficiently mixed with other three.
Above-mentioned heavy metals immobilization agent is pressed 40% addition of bed mud weight, mixing and stirring, be subsequently adding water mix and become paste
Shape.Maintenance 7 days under the conditions of room temperature, relative humidity 90%.After 7 days, with reference to gb5086.2-1997, " solid waste Leaching soaks
Go out method-horizontal vibration method " content of leachability zinc and nickel in standard detection firming body.Result shows, leachability in firming body
The content of zinc is 2.63mg/kg, and leachability nickel content is 0.57mg/kg, compared with original bed mud, decreases 81.7% He respectively
83.3%.Illustrate that this heavy metals immobilization agent is gushed Leaching Heavy Metals in bed mud to reduction river and had remarkable result.
Embodiment 6
Deal with objects the river being all in embodiment 5 and gush bed mud.
The formula of heavy metals immobilization agent is: the blast-furnace cinder of 50 mass parts, the Calx of 40 mass parts, the diatom of 5 mass parts
Soil, 5 mass parts potassium hydrogen phosphates, levigate for blast-furnace cinder mistake 60 mesh sieve is sufficiently mixed with other three.
Above-mentioned heavy metals immobilization agent is pressed 40% addition of bed mud weight, mixing and stirring, be subsequently adding water mix and become paste
Shape.Maintenance 7 days under the conditions of room temperature, relative humidity 90%.After 7 days, with reference to gb5086.2-1997, " solid waste Leaching soaks
Go out method-horizontal vibration method " content of leachability zinc and nickel in standard detection firming body.Result shows, leachability in firming body
The content of zinc is 2.04mg/kg, and leachability nickel content is 0.29mg/kg, compared with original bed mud, decreases 85.8% He respectively
91.5%.Illustrate that this heavy metals immobilization agent is gushed Leaching Heavy Metals in bed mud to reduction river and had remarkable result.
Embodiment 7
Deal with objects the river being all in embodiment 5 and gush bed mud.
The formula of heavy metals immobilization agent is: the flyash of 20 mass parts, the blast-furnace cinder of 30 mass parts, the stone of 40 mass parts
Ash, the kieselguhr of 5 mass parts, the zeolite of 5 mass parts, 5 mass parts potassium hydrogen phosphates and 5 mass parts aluminum sulfate, by flyash and height
Stove slag is levigate, and mistake 60 mesh sieve is sufficiently mixed with other five.
Above-mentioned heavy metals immobilization agent is pressed 40% addition of bed mud weight, mixing and stirring, be subsequently adding water mix and become paste
Shape.Maintenance 7 days under the conditions of room temperature, relative humidity 90%.After 7 days, with reference to gb5086.2-1997, " solid waste Leaching soaks
Go out method-horizontal vibration method " content of leachability zinc and nickel in standard detection firming body.Result shows, leachability in firming body
The content of zinc is 1.54mg/kg, and leachability nickel content is 0.18mg/kg, compared with original bed mud, decreases 96.2% He respectively
94.7%.Illustrate that this heavy metals immobilization agent is gushed Leaching Heavy Metals in bed mud to reduction river and had remarkable result.
Embodiment 8
Heavy metals immobilization agent using the present invention processes leather-making waste water mud.Recording leachability chromium content in mud is
12.97g/kg.
The formula of heavy metals immobilization agent is: the calcining coal gangue powder of 40 mass parts, the Portland cement of 30 mass parts,
The Calx of 10 mass parts, the bentonite of 10 mass parts, 10 mass parts aluminum sulfate, by levigate for calcining coal gangue mistake 60 mesh sieve and in addition
Three is sufficiently mixed.
Above-mentioned heavy metals immobilization agent is pressed 40% addition of leather-making mud weight, mixing and stirring, add water mix to become paste
Shape.Maintenance 7 days under the conditions of room temperature, relative humidity 90%.After 7 days, with reference to gb5086.2-1997, " solid waste Leaching soaks
Go out method-horizontal vibration method " content of leachability chromium in standard detection firming body.Result shows, in firming body, leachability chromium contains
Measure as 0.86g/kg, compared with primary sludge, decrease 93.4%.Illustrate that this heavy metals immobilization agent is heavy in industrial sludge to reducing
Metal Leaching has remarkable result.
Embodiment 9
Process object is all leather-making waste water mud in embodiment 8.
The formula of heavy metals immobilization agent is: the calcining coal gangue powder of 20 mass parts, the carbide slag of 30 mass parts, 40 mass parts
Calx, the montmorillonite of 5 mass parts, the Kaolin of 5 mass parts, 10 mass parts aluminum sulfate, by calcining coal gangue powder and carbide slag
Levigate mistake 60 mesh sieve is sufficiently mixed with other four.
Above-mentioned heavy metals immobilization agent is pressed 40% addition of leather-making mud weight, mixing and stirring, add water mix to become paste
Shape.Maintenance 7 days under the conditions of room temperature, relative humidity 90%.After 7 days, with reference to gb5086.2-1997, " solid waste Leaching soaks
Go out method-horizontal vibration method " content of leachability chromium in standard detection firming body.Result shows, in firming body, leachability chromium contains
Measure as 0.75g/kg, compared with primary sludge, decrease 94.2%.Illustrate that this heavy metals immobilization agent is heavy in industrial sludge to reducing
Metal Leaching has remarkable result.
Embodiment 10
Process object is all leather-making waste water mud in embodiment 8.
The formula of heavy metals immobilization agent is: the flyash of 20 mass parts, the carbide slag of 20 mass parts, 40 mass parts common
Portland cement, the montmorillonite of 5 mass parts, the meerschaum of 5 mass parts, 10 mass parts dibastic sodium phosphates, by flyash and carbide slag
Levigate mistake 60 mesh sieve is sufficiently mixed with other four.
Above-mentioned heavy metals immobilization agent is pressed 50% addition of leather-making mud weight, mixing and stirring, add water mix to become paste
Shape.Maintenance 7 days under the conditions of room temperature, relative humidity 90%.After 7 days, with reference to gb5086.2-1997, " solid waste Leaching soaks
Go out method-horizontal vibration method " content of leachability chromium in standard detection firming body.Result shows, in firming body, leachability chromium contains
Measure as 0.65g/kg, compared with primary sludge, decrease 95.0%.Illustrate that this heavy metals immobilization agent is heavy in industrial sludge to reducing
Metal Leaching has remarkable result.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within scope of the presently claimed invention.
Claims (2)
1. a kind of heavy metals immobilization method for administering heavy metal pollution in solid waste is it is characterised in that select 40 mass
Part blast-furnace cinder, the calcining coal gangue powder of 20 mass parts, the Calx of 20 mass parts, the Portland cement of 10 mass parts,
The dibastic sodium phosphate of the bentonite of 10 mass parts, 5 mass parts aluminum sulfate and 5 mass parts, by blast-furnace cinder and calcining coal gangue grinding
Carefully cross 60 mesh sieves and be sufficiently mixed with other five and prepare described firming agent；Described firming agent is pressed the 50% of dump slag weight add
Enter, mixing and stirring, be subsequently adding water mix and become pasty state；Under the conditions of room temperature, relative humidity 90%, maintenance completes weight for 6 days
Metal-cured process.
2. a kind of heavy metals immobilization method for administering heavy metal pollution in solid waste is it is characterised in that select 20 mass
Part flyash, the blast-furnace cinder of 30 mass parts, the Calx of 40 mass parts, the kieselguhr of 5 mass parts, the zeolite of 5 mass parts, 5
Mass parts potassium hydrogen phosphate and 5 mass parts aluminum sulfate, will be fully mixed with other five to flyash and the levigate mistake of blast-furnace cinder 60 mesh sieve
Close and prepare described firming agent；Described firming agent is gushed 40% addition of bed mud weight, mixing and stirring by river, be subsequently adding water
Mix becomes pasty state；Under the conditions of room temperature, relative humidity 90%, maintenance completes heavy metals immobilization process in 7 days.
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