CN108480395A - The restorative procedure of waste residue containing vanadium and pollution of vanadium soil - Google Patents
The restorative procedure of waste residue containing vanadium and pollution of vanadium soil Download PDFInfo
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- CN108480395A CN108480395A CN201810535002.9A CN201810535002A CN108480395A CN 108480395 A CN108480395 A CN 108480395A CN 201810535002 A CN201810535002 A CN 201810535002A CN 108480395 A CN108480395 A CN 108480395A
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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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- 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
- B09C1/085—Reclamation of contaminated soil chemically electrochemically, e.g. by electrokinetics
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Abstract
The present invention relates to contaminated soil remediation fields, in particular to the restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil.Free vanadium is fixed in waste residue and contaminated soil by restoring the collective effects such as stabilizer, basic matterial, flocculant by principles such as reduction, neutralization, flocculation, precipitations by this method, reduces the environmental risk of vanadium in solid matter.High price vfanadium compound is converted by Low Valent Vanadium using reduction stabilizer, effectively reduces the toxicity of vanadium.The acidic materials that reduction stabilizer generates have been neutralized using basic matterial, while can have been formed and be co-precipitated with vfanadium compound, effectively fixed free vanadium.Stable large particle will be formed in the positively charged colloid of little particle and is formed using anionic flocculant to be fixed in solid-state.This method is easy for construction, at low cost, quick.
Description
Technical field
The present invention relates to contaminated soil remediation field, in particular to repairing for a kind of waste residue containing vanadium and pollution of vanadium soil
Compound method.
Background technology
The main steel industry of vanadium, battery industry, pharmaceuticals industry etc..It will produce during vanadium exploitation, production and use big
The pollution of vanadium waste residue and contaminated soil of amount.Elemental vanadium is relatively low to toxicity, and its compound has toxicity, toxicity pair to animals and plants
Increase as valence state increases, increases with the increase of solubility.Therefore, it is necessary to be carried out to containing vanadium waste residue and contaminated soil
It is effective to administer.Curing/stabilizing technology is a kind of by adding fixative or stabilizer, by having in waste residue or contaminated soil
Malicious harmful substance is fixed up or converts pollutant to the inactive form of chemical property, prevents it from migrating and expanding in the environment
It dissipates, to reduce the recovery technique of its harmfulness, which has the characteristics that easy for construction, at low cost, quick.The present invention is just
It is the repairing and treating that waste residue containing vanadium and contaminated soil are realized using the technical principle.
Invention content
The purpose of the present invention is to provide the restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil, realize waste residue containing vanadium with
Contaminated soil is effectively treated, and prevents its harm to animals and plants.
To achieve the goals above, technical solution used in the embodiment of the present invention is as follows：
A kind of restorative procedure of waste residue containing vanadium and pollution of vanadium soil, including：Obtained waste residue containing vanadium and pollution of vanadium will be dug clearly
Soil, reduction stabilizer and water are uniformly mixed, and react to obtain the first rehabilitating soil；Alkaline material is added into the first rehabilitating soil
Material is uniformly mixed, reacts to obtain the second rehabilitating soil；Flocculant is added into the second rehabilitating soil.
The beneficial effects of the invention are as follows：
The restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil provided by the invention, including：Contain vanadium by what clear digging obtained
Waste residue and pollution of vanadium soil, reduction stabilizer and water are uniformly mixed, and react to obtain the first rehabilitating soil；Into the first rehabilitating soil
Basic matterial is added, is uniformly mixed, reacts to obtain the second rehabilitating soil；After adding flocculant reaction into the second rehabilitating soil
Obtain rehabilitating soil.This method passes through reduction, neutralization, wadding by restoring the collective effects such as stabilizer, basic matterial, flocculant
The principles such as solidifying, precipitation, free vanadium is fixed in waste residue and contaminated soil, reduces the environmental risk of vanadium in solid matter.Using
Reduction stabilizer converts high price vfanadium compound to Low Valent Vanadium, effectively reduces the toxicity of vanadium.Reduction has been neutralized using basic matterial
The acidic materials that stabilizer generates, while can be formed and be co-precipitated with vfanadium compound, effectively fixed free vanadium.Using anionic
Flocculant will form in the positively charged colloid of little particle and be formed stable large particle and is fixed in solid-state.This method construction party
Just, at low cost, quick.
Specific implementation mode
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
In the description of the present invention, it should be noted that term " first ", " second " etc. are only used for distinguishing description, without
It can be interpreted as indicating or implying relative importance.
Have below to the restorative procedure and rehabilitating soil of the waste residue containing vanadium of the embodiment of the present invention and pollution of vanadium soil
Body explanation.
The restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil provided in an embodiment of the present invention, including：
S1, it will be crushed and will sieve after the digging clearly of vanadium waste residue and pollution of vanadium soil will be contained.
After navajoite, the waste residue containing vanadium of vanadium industry and pollution of vanadium soil are dug clearly, it is crushed, and sieved according to grain size
Point.For subsequently to navajoite, vanadium industry waste residue containing vanadium and pollution of vanadium soil carry out repair advantageous guarantee is provided.
It should be understood that the operating method that the above-mentioned method dug clearly can select this field common；Above-mentioned breaking method and sieve
The operating method that point method can also select this field common.
S2, obtained waste residue containing vanadium and pollution of vanadium soil, reduction stabilizer and water will be dug clearly be uniformly mixed, react the
One rehabilitating soil.
High price vfanadium compound is converted by Low Valent Vanadium using reduction stabilizer, effectively reduces the toxicity of vanadium.
Specifically, first above-mentioned waste residue containing vanadium and pollution of vanadium soil are uniformly mixed with reduction stabilizer, then thereto
A certain amount of water is added, is uniformly mixed.
Further, the additive amount of above-mentioned water is the method by eye-observation, observes waste residue containing vanadium and pollution of vanadium soil
The soft or hard degree that earth, reduction stabilizer mix, cannot be excessively dilute, avoids soil erosion；Can not be feeding-up, lead to waste residue containing vanadium and vanadium
Contaminated soil, reduction stabilizer can not stir evenly.
Further, the one kind of above-mentioned reduction stabilizer in iron powder, ferrous salt, sulphite, pyrosulfite
Or it is a variety of.
Further, in the present embodiment, above-mentioned iron powder selective reduction iron powder.Popular the saying of reproducibility iron powder be exactly
The iron powder produced with restoring method, is called reduced iron powder.It is a kind of highly active iron powder, because having stronger reproducibility,
It is easy to that oxidation reaction occurs, therefore selects reproducibility iron powder as reduction stabilizer in this example, it can be with waste residue containing vanadium
Reduction reaction occurs with the vanadium of the free state in pollution of vanadium soil, to be conducive to fix free vanadium.
Ferrous salt has stronger reproducibility, can be with many oxidant reactions.Therefore, ferrous ion is selected in the present embodiment
Reduction reaction can occur with the vanadium of the free state in waste residue containing vanadium and pollution of vanadium soil, to be conducive to fix free vanadium.
Sulphite also has good reproducibility, can be used in and waste residue containing vanadium and the free state in pollution of vanadium soil
Reduction reaction occurs for vanadium.It is further alternative, select sodium sulfite in the present embodiment.Sodium sulfite be existing for sulphite most
Common form is excellent reducing agent.Sodium sulfite, performance is selected to stablize, reaction effect is good.
Pyrosulfite also has good reproducibility, can be used in and the free state in waste residue containing vanadium and pollution of vanadium soil
Vanadium occur reduction reaction play the role of repairing polluted soil to be conducive to fix free vanadium.
Further, by percentage to the quality, the content of the reduction stabilizer added is waste residue containing vanadium and pollution of vanadium soil
The 3-10% of gross mass.
The reducing agent that 3-10% mass percents are added into above-mentioned waste residue containing vanadium and pollution of vanadium soil, can be effectively
Reduction reaction occurs with the vanadium of the free state in waste residue containing vanadium and pollution of vanadium soil to play to be conducive to fix free vanadium
The effect of repairing polluted soil.
S3, basic matterial is added into the first rehabilitating soil, is uniformly mixed, reacts to obtain the second rehabilitating soil.
The acidic materials that reduction stabilizer generates have been neutralized using basic matterial, while can have been formed with vfanadium compound coprecipitated
It forms sediment, effectively fixed free vanadium.
Specifically, basic matterial is added into the first rehabilitating soil, and adds a certain amount of water, is uniformly mixed, and is reacted
Obtain the second rehabilitating soil.
Can be then added to waste residue containing vanadium after pre-configured alkaline solution it should be noted that in aforesaid operations
In pollution of vanadium soil；Can also be after containing vanadium waste residue and pollution of vanadium soil and basic matterial mixing, to add a certain amount of water,
It is mixed.
Further, basic matterial is one or more in sodium hydroxide, lime or calcium hydroxide.
Sodium hydroxide, chemical formula NaOH are commonly called as caustic soda, caustic soda, caustic soda, are a kind of highly basic with strong corrosive,
Generally sheet or block-shape morphology, (heat release when being dissolved in water) soluble easily in water simultaneously form alkaline solution, separately there is hygroscopy, easily draw empty
Vapor (deliquescence) in gas and carbon dioxide (rotten), can be added hydrochloric acid and check whether to go bad.
Therefore, select sodium hydroxide that can be sent out with the vanadium of the free state in waste residue containing vanadium and pollution of vanadium soil in the present embodiment
Raw neutralization reaction, to be conducive to fix free vanadium.
Lime or calcium hydroxide are common basic matterials, cheap, are easy to get, use it for it is useless containing vanadium
Neutralization reaction occurs for the vanadium of slag and the free state in pollution of vanadium soil, to be conducive to fix free vanadium.
Further, by percentage to the quality, the quality of the basic matterial added is that waste residue containing vanadium and pollution of vanadium soil are total
The 1-5% of quality.
The basic matterial that 1-5% mass percents are added into above-mentioned waste residue containing vanadium and pollution of vanadium soil, can be effective
With the vanadium of waste residue containing vanadium and the free state in pollution of vanadium soil neutralization reaction occurs for ground, to be conducive to fix free vanadium, rises
To the effect of repairing polluted soil.
S4, flocculant is added into the second rehabilitating soil.
Specifically, flocculant and waste residue containing vanadium and pollution of vanadium soil are uniformly mixed.
Stable large particle will be formed in the positively charged colloid of little particle and is formed using anionic flocculant to be fixed on
In solid-state.
Further, in the present embodiment, above-mentioned flocculant is anion-polyacrylamide.
Anionic polyacrylamide (APAM) is water-soluble high molecular polymer, is mainly used for the wadding of various industrial wastewaters
Retrogradation is dropped, and clarifying treatment, such as steel plant wastewater, waste water from plating plant, Metallurgical Waste Water, the sewage disposals such as coal washing waste water, sludge are precipitated
Dehydration etc..It can be additionally used in drinking water clarification and purified treatment.Due to containing a certain number of polar groups, its energy in its strand
By adsorbing the solids that suspend in water, makes to build bridge between particle or so that particle coacervation is formed big flocculation by charging neutrality
Object, therefore the sedimentation of particle in suspension can be accelerated, have and obviously accelerate solution clarification, promotes filtering and other effects.
In the present embodiment, anionic polyacrylamide is added into waste residue containing vanadium and pollution of vanadium soil to rise well
It to flocculation sediment acts on, and then further improves the repairing effect of vanadium waste residue and pollution of vanadium soil.
Further, by percentage to the quality, the content of the flocculant added is less than or equal to waste residue containing vanadium and pollution of vanadium soil
The 1% of earth gross mass.
1% flocculant less than waste residue containing vanadium and pollution of vanadium soil gross mass is added, can not only effectively act as wadding a quilt with cotton
The effect of retrogradation shallow lake rehabilitating soil, and the waste of resource will not be caused.
S5, it is also conserved after adding flocculant into the second rehabilitating soil.
Specifically, waste residue after processing and soil are stacked on hardened ground, and in covering LDPE antiseepage films, maintenance is certain
After time, after sample detecting qualification, backfill or landfill.Detect it is unqualified, continue above-mentioned steps processing.
Further, when maintenance, the moisture content for controlling waste residue containing vanadium and pollution of vanadium soil is saturation state, conserves 7-15
It.
This method by reduction, neutralization, flocculation, is sunk by restoring the collective effects such as stabilizer, basic matterial, flocculant
The principles such as shallow lake, free vanadium is fixed in waste residue and contaminated soil, reduces the environmental risk of vanadium in solid matter.This method has
The features such as easy for construction, at low cost, quick.
The feature and performance of the present invention are described in further detail with reference to embodiments：
Embodiment 1
The restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil provided in this embodiment.
The present embodiment object is certain Central-South discarded navajoite mountain, and according to investigation, which is vanadium,
Waste residue vanadium total amount is 1235.8~4363.2mg/kg, according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) prepare leachate in a concentration of 4.6~12.4mg/L of vanadium, be more than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, it is larger to Soil Surrounding and water pollution risk.The discarded vanadium mine waste residue is controlled
Reason method is as follows：
(1) waste residue dig clearly, be crushed and sieve；
(2) waste residue is uniformly mixed with reduction stabilizer, and a certain amount of water is added, be uniformly mixed；Reduction is stablized
Agent is green vitriol, and by percentage to the quality, dosage is the 3% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(3) basic matterial is added, and adds a certain amount of water, is uniformly mixed；Basic matterial is lime, with quality percentage
Than meter, dosage is the 0.1% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(4) anion-polyacrylamide (PAM) is added, by percentage to the quality, dosage is that waste residue containing vanadium and vanadium are dirty
Contaminate soil gross mass 1%.
(5) waste residue after processing is stacked on hardened ground, and in covering LDPE antiseepage films, maintenance after a certain period of time, is adopted
After sample detection is qualified, into the general solid waste landfill site landfill of II classes.Detect it is unqualified, continue above-mentioned steps processing.
Moisture content reaches saturation during Solid state fermentation and maintenance, and curing time is 7 days.
After the above method is handled, waste residue according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) vanadium concentration is less than 0.8mg/L in the leachate prepared, is less than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, into the general solid waste landfill site landfill of II classes.
Embodiment 2
The restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil provided in this embodiment.
The present embodiment object is certain Central-South discarded navajoite mountain, and according to investigation, which is vanadium,
Waste residue vanadium total amount is 1235.8~4363.2mg/kg, according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) prepare leachate in a concentration of 4.6~12.4mg/L of vanadium, be more than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, it is larger to Soil Surrounding and water pollution risk.The discarded vanadium mine waste residue is controlled
Reason method is as follows：
(1) waste residue dig clearly, be crushed and sieve；
(2) waste residue is uniformly mixed with reduction stabilizer, and a certain amount of water is added, be uniformly mixed；Reduction is stablized
Agent is green vitriol, and by percentage to the quality, dosage is the 10% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(3) basic matterial is added, and adds a certain amount of water, is uniformly mixed；Basic matterial is lime, with quality percentage
Than meter, dosage is the 5% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(4) anion-polyacrylamide (PAM) is added, by percentage to the quality, dosage is that waste residue containing vanadium and vanadium are dirty
Contaminate soil gross mass 0.2%.
(5) waste residue after processing is stacked on hardened ground, and in covering LDPE antiseepage films, maintenance after a certain period of time, is adopted
After sample detection is qualified, into the general solid waste landfill site landfill of II classes.Detect it is unqualified, continue above-mentioned steps processing.
Moisture content reaches saturation during Solid state fermentation and maintenance, and curing time is 15 days.
After the above method is handled, waste residue according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) vanadium concentration is less than 0.4mg/L in the leachate prepared, is less than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, into the general solid waste landfill site landfill of II classes.
Embodiment 3
The restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil provided in this embodiment.
The present embodiment object is certain Central-South discarded navajoite mountain, and according to investigation, which is vanadium,
Waste residue vanadium total amount is 1235.8~4363.2mg/kg, according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) prepare leachate in a concentration of 4.6~12.4mg/L of vanadium, be more than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, it is larger to Soil Surrounding and water pollution risk.The discarded vanadium mine waste residue is controlled
Reason method is as follows：
(1) waste residue dig clearly, be crushed and sieve；
(2) waste residue is uniformly mixed with reduction stabilizer, and a certain amount of water is added, be uniformly mixed；Reduction is stablized
Agent is green vitriol, and by percentage to the quality, dosage is the 6% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(3) basic matterial is added, and adds a certain amount of water, is uniformly mixed；Basic matterial is lime, with quality percentage
Than meter, dosage is the 2% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(4) anion-polyacrylamide (PAM) is added, by percentage to the quality, dosage is that waste residue containing vanadium and vanadium are dirty
Contaminate soil gross mass 0.5%.
(5) waste residue after processing is stacked on hardened ground, and in covering LDPE antiseepage films, maintenance after a certain period of time, is adopted
After sample detection is qualified, into the general solid waste landfill site landfill of II classes.Detect it is unqualified, continue above-mentioned steps processing.
Moisture content reaches saturation during Solid state fermentation and maintenance, and curing time is 12 days.
After the above method is handled, waste residue according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) vanadium concentration is less than 0.6mg/L in the leachate prepared, is less than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, into the general solid waste landfill site landfill of II classes.
Embodiment 4
The restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil provided in this embodiment.
The present embodiment object is certain Central-South discarded navajoite mountain, and according to investigation, which is vanadium,
Waste residue vanadium total amount is 1235.8~4363.2mg/kg, according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) prepare leachate in a concentration of 4.6~12.4mg/L of vanadium, be more than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, it is larger to Soil Surrounding and water pollution risk.The discarded vanadium mine waste residue is controlled
Reason method is as follows：
(1) waste residue dig clearly, be crushed and sieve；
(2) waste residue is uniformly mixed with reduction stabilizer, and a certain amount of water is added, be uniformly mixed；Reduction is stablized
Agent is green vitriol, and by percentage to the quality, dosage is the 8% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(3) basic matterial is added, and adds a certain amount of water, is uniformly mixed；Basic matterial is lime, with quality percentage
Than meter, dosage is the 1.5% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(4) anion-polyacrylamide (PAM) is added, by percentage to the quality, dosage is that waste residue containing vanadium and vanadium are dirty
Contaminate soil gross mass 0.7%.
(5) waste residue after processing is stacked on hardened ground, and in covering LDPE antiseepage films, maintenance after a certain period of time, is adopted
After sample detection is qualified, into the general solid waste landfill site landfill of II classes.Detect it is unqualified, continue above-mentioned steps processing.
Moisture content reaches saturation during Solid state fermentation and maintenance, and curing time is 10 days.
After the above method is handled, waste residue according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) vanadium concentration is less than 0.5mg/L in the leachate prepared, is less than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, into the general solid waste landfill site landfill of II classes.
Embodiment 5
The restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil provided in this embodiment.
The present embodiment object is certain discarded navajoite contaminated soil of southwest, is investigated according to soil environment, the regional soil feature
Pollutant is vanadium, and contaminated soil vanadium total amount is 431.7~965.3mg/kg, according to《Solid waste Leaching leaching method water
Horizontal tremble swings method》(HJ557-2010) a concentration of 0.2~3.6mg/L of vanadium in the leachate prepared, part point have been over《Vanadium
Emission of industrial pollutants standard》(GB26452-2011) 2 limit value 1.0mg/L of table needs to repair there are leaching environment risk.It should
Discarded navajoite mountain Remediation of Contaminated Soil is as follows：
(1) contaminated soil dig clearly, be crushed and sieve；
(2) contaminated soil is uniformly mixed with reduction stabilizer, and a certain amount of water is added, be uniformly mixed；Reduction
Stabilizer is iron powder, and by percentage to the quality, dosage is the 1% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(3) basic matterial of dosage, and a certain amount of water is added, it is uniformly mixed；Basic matterial lime, with quality hundred
Divide than meter, dosage is the 0.5% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(4) anion-polyacrylamide (PAM) is added, by percentage to the quality, dosage is that waste residue containing vanadium and vanadium are dirty
Contaminate soil gross mass 0.9%.
(5) contaminated soil after processing is stacked on hardened ground, and in covering LDPE antiseepage films, conserves certain time
Afterwards, after sample detecting qualification, into the general solid waste landfill site landfill of II classes.Detect it is unqualified, continue above-mentioned steps processing.
(6) area of knockout is backfilled using cleaning soil.
Soil moisture content reaches saturation during contaminated soil processing and maintenance, and curing time is 15 days.
After the above method is handled, soil according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) vanadium concentration is less than 0.8mg/L in the leachate prepared, is less than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, into the general solid waste landfill site landfill of II classes.
Embodiment 6
The restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil provided in this embodiment.
The present embodiment object is certain discarded navajoite contaminated soil of southwest, is investigated according to soil environment, the regional soil feature
Pollutant is vanadium, and contaminated soil vanadium total amount is 431.7~965.3mg/kg, according to《Solid waste Leaching leaching method water
Horizontal tremble swings method》(HJ557-2010) a concentration of 0.2~3.6mg/L of vanadium in the leachate prepared, part point have been over《Vanadium
Emission of industrial pollutants standard》(GB26452-2011) 2 limit value 1.0mg/L of table needs to repair there are leaching environment risk.It should
Discarded navajoite mountain Remediation of Contaminated Soil is as follows：
(1) contaminated soil dig clearly, be crushed and sieve；
(2) contaminated soil is uniformly mixed with reduction stabilizer, and a certain amount of water is added, be uniformly mixed；Reduction
Stabilizer is iron powder, and by percentage to the quality, dosage is the 3% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(3) basic matterial of dosage, and a certain amount of water is added, it is uniformly mixed；Basic matterial lime, with quality hundred
Divide than meter, dosage is the 1.5% of waste residue containing vanadium and pollution of vanadium soil gross mass.
(4) anion-polyacrylamide (PAM) is added, by percentage to the quality, dosage is that waste residue containing vanadium and vanadium are dirty
Contaminate soil gross mass 0.6%.
(5) contaminated soil after processing is stacked on hardened ground, and in covering LDPE antiseepage films, conserves certain time
Afterwards, after sample detecting qualification, into the general solid waste landfill site landfill of II classes.Detect it is unqualified, continue above-mentioned steps processing.
(6) area of knockout is backfilled using cleaning soil.
Soil moisture content reaches saturation during contaminated soil processing and maintenance, and curing time is 15 days.
After the above method is handled, soil according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) vanadium concentration is less than 0.6mg/L in the leachate prepared, is less than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, into the general solid waste landfill site landfill of II classes.
Embodiment 7
The restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil provided in this embodiment.
The present embodiment object is certain discarded navajoite mountain of southwest, and according to investigation, which is vanadium,
Waste residue vanadium total amount is 540.1~6723.9mg/kg, according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) a concentration of 0.5~25.1mg/L of vanadium in the leachate prepared, most of sample are more than《Vanadium industrial pollutants
Discharge standard》(GB26452-2011) 2 limit value 1.0mg/L of table, it is larger to Soil Surrounding and water pollution risk.The discarded navajoite
Mountain controlling waste residue method is as follows：
(1) waste residue dig clearly, be crushed and sieve；
(2) waste residue is uniformly mixed with reduction stabilizer, and a certain amount of water is added, be uniformly mixed；Reduction is stablized
Agent is green vitriol, and by percentage to the quality, dosage is waste residue containing vanadium and pollution of vanadium soil gross mass 6%.
(3) basic matterial of dosage, and a certain amount of water is added, it is uniformly mixed；Basic matterial lime, dosage are
Waste residue containing vanadium and pollution of vanadium soil gross mass 3%.
(4) anion-polyacrylamide (PAM) is added, by percentage to the quality, dosage is that waste residue containing vanadium and vanadium are dirty
Contaminate soil gross mass 0.15%.
(5) waste residue after processing is stacked on hardened ground, and in covering LDPE antiseepage films, maintenance after a certain period of time, is adopted
After sample detection is qualified, into the general solid waste landfill site landfill of II classes.Detect it is unqualified, continue above-mentioned steps processing.
Moisture content reaches saturation during the Solid state fermentation and maintenance, and curing time is 15 days.
After the above method is handled, waste residue according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) vanadium concentration is less than 0.3mg/L in the leachate prepared, is less than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, into the general solid waste landfill site landfill of II classes.
Embodiment 8
The restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil provided in this embodiment.
The present embodiment object is certain discarded navajoite mountain of southwest, and according to investigation, which is vanadium,
Waste residue vanadium total amount is 540.1~6723.9mg/kg, according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) a concentration of 0.5~25.1mg/L of vanadium in the leachate prepared, most of sample are more than《Vanadium industrial pollutants
Discharge standard》(GB26452-2011) 2 limit value 1.0mg/L of table, it is larger to Soil Surrounding and water pollution risk.The discarded navajoite
Mountain controlling waste residue method is as follows：
(1) waste residue dig clearly, be crushed and sieve；
(2) waste residue is uniformly mixed with reduction stabilizer, and a certain amount of water is added, be uniformly mixed；Reduction is stablized
Agent is green vitriol, and by percentage to the quality, dosage is waste residue containing vanadium and pollution of vanadium soil gross mass 10%.
(3) basic matterial of dosage, and a certain amount of water is added, it is uniformly mixed；Basic matterial lime, dosage are
Waste residue containing vanadium and pollution of vanadium soil gross mass 4%.
(4) anion-polyacrylamide (PAM) is added, by percentage to the quality, dosage is that waste residue containing vanadium and vanadium are dirty
Contaminate soil gross mass 0.1%.
(5) waste residue after processing is stacked on hardened ground, and in covering LDPE antiseepage films, maintenance after a certain period of time, is adopted
After sample detection is qualified, into the general solid waste landfill site landfill of II classes.Detect it is unqualified, continue above-mentioned steps processing.
Moisture content reaches saturation during the Solid state fermentation and maintenance, and curing time is 15 days.
After the above method is handled, waste residue according to《Solid waste Leaching leaching method level shakes method》
(HJ557-2010) vanadium concentration is less than 0.2mg/L in the leachate prepared, is less than《Vanadium emission of industrial pollutants standard》
(GB26452-2011) 2 limit value 1.0mg/L of table, into the general solid waste landfill site landfill of II classes.
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, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. the restorative procedure of a kind of waste residue containing vanadium and pollution of vanadium soil, which is characterized in that including：
Obtained waste residue containing vanadium and pollution of vanadium soil, reduction stabilizer and water will be dug clearly to be uniformly mixed, and react to obtain first and repair
Soil；
Basic matterial is added into first rehabilitating soil, is uniformly mixed, reacts to obtain the second rehabilitating soil；
Flocculant is added into second rehabilitating soil.
2. the restorative procedure of waste residue containing vanadium and pollution of vanadium soil as described in claim 1, which is characterized in that
The reduction stabilizer is selected from one or more of iron powder, ferrous salt, sulphite, pyrosulfite.
3. the restorative procedure of waste residue containing vanadium and pollution of vanadium soil as described in claim 1, which is characterized in that
The basic matterial is one or more in sodium hydroxide, lime or calcium hydroxide.
4. the restorative procedure of waste residue containing vanadium and pollution of vanadium soil as described in claim 1, which is characterized in that
The flocculant is anion-polyacrylamide.
5. the restorative procedure of waste residue containing vanadium according to any one of claims 1-4 and pollution of vanadium soil, which is characterized in that
By percentage to the quality, the content of the reduction stabilizer added is that the waste residue containing vanadium and the pollution of vanadium soil are total
The 3-10% of quality.
6. the restorative procedure of waste residue containing vanadium and pollution of vanadium soil as claimed in claim 5, which is characterized in that
By percentage to the quality, the quality of the basic matterial added is the waste residue containing vanadium and the total matter of pollution of vanadium soil
The 1-5% of amount.
7. the restorative procedure of waste residue containing vanadium and pollution of vanadium soil as claimed in claim 6, which is characterized in that
By percentage to the quality, the content of the flocculant added is less than or equal to the waste residue containing vanadium and the pollution of vanadium soil
The 1% of gross mass.
8. the restorative procedure of waste residue containing vanadium and pollution of vanadium soil as described in claim 1, which is characterized in that
Waste residue containing the vanadium and pollution of vanadium soil, the reduction stabilizer and water described in obtaining will be dug clearly to be uniformly mixed
Before, it will also the waste residue containing vanadium and the pollution of vanadium soil breaking and screening.
9. the restorative procedure of waste residue containing vanadium and pollution of vanadium soil as described in claim 1, which is characterized in that
It is also conserved after adding the flocculant into second rehabilitating soil；
When maintenance, the moisture content for controlling the waste residue containing vanadium and the pollution of vanadium soil is saturation state, is conserved 7-15 days.
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Application publication date: 20180904 |