CN108160688A - The method of five step elution method remediating heavy metal soil - Google Patents
The method of five step elution method remediating heavy metal soil Download PDFInfo
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- CN108160688A CN108160688A CN201711439086.8A CN201711439086A CN108160688A CN 108160688 A CN108160688 A CN 108160688A CN 201711439086 A CN201711439086 A CN 201711439086A CN 108160688 A CN108160688 A CN 108160688A
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- heavy metal
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- soil
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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
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
Abstract
The present invention provides the methods of five step elution method remediating heavy metal soil, include the following steps：Polyanion cellulose, magnetic graphene, graphene oxide, chitosan magnetic, activated carbon fibre, absolute ethyl alcohol and water are mixed；Contaminated soil stirring is added in, filtering removes filtrate；Rice hull ash, phenolate enzymolysis xylogen, humic acid and water stirring, filtering is added to remove filtrate；Add chicken manure charcoal, reed straw charcoal and green peel of walnut charcoal, heating stirring, filtering removes filtrate；Add sepiolite, straw mushroom mushroom bran and lychee exocarp powder, filter, remove filtrate；Ammonium nitrate and ammonium oxalate stirring are added in, filtering removes filtrate；Measure the content of the heavy metal ion in treated soil.The method of the five step washed off soil reparations of the present invention, it is all very high to the removal rate of each heavy metal ion, copper ion and cadmium ion can almost be removed completely, it is also higher to the removal rate of mercury ion and lead ion, it is good to the repairing effect of heavy-metal contaminated soil.
Description
Technical field
The present invention relates to the methods of five step elution method remediating heavy metal soil.
Background technology
Soil pollution refers to that the substance being harmful in itself with other life entities to the mankind is applied in soil by human activity, causes
The phenomenon that making the content apparent increase of certain harmful components, and soil environment is caused to deteriorate.In environmental carrying capacity, when pollutant into
After entering soil, under the action of soil mineral, organic matter and edaphon, by a series of physics, chemistry and biology
Chemical reaction process reduces its concentration or changes its form, so as to eliminate pollutant toxicity, here it is the self purification of soil,
The environmental carrying capacity of usual soil be also referred to as soil from net capacity.In recent years, with the rapid development of industrial or agricultural, heavy metal ion
It is largely discharged in the production and use process, and passes through the approach such as atmospheric sedimentation, sewage irrigation and enter soil, make soil by weight
The situation of metallic pollution is on the rise.Heavy metal ion and its compound in these soil can enter human body by food chain,
High risks are generated to human body.Therefore, work out efficiently to the restorative procedure of heavy-metal contaminated soil to the protection of environment and
The health of human body all has great importance.
Invention content
Technical problems to be solved：The object of the present invention is to provide a kind of sides of five steps elution method remediating heavy metal soil
Method, it is all very high to the removal rate of each heavy metal ion, copper ion and cadmium ion can almost be removed completely, to mercury ion and lead
The removal rate of ion is also higher, good to the repairing effect of heavy-metal contaminated soil.
Technical solution：The method of five step elution method remediating heavy metal soil, includes the following steps：
(1) by 3-5mg polyanion celluloses, 2-4mg magnetic graphenes, 2-5mg graphene oxides, 4-7mg chitosan magnetics,
10-20min is mixed in 2-5mg activated carbon fibre, 10-20ml isopropanols and 1000-2000ml deionized waters；
(2) 250-300g contaminated soils are added in and 20-30min is stirred under rotating speed 200-250r/min, filtered, remove filtrate；
(3) 3-6mg rice hull ash, 4-8mg phenolate enzymolysis xylogen, 4-6mg humic acid and 1000-2000ml deionized waters are added in,
5-10min is stirred, filtering removes filtrate；
(4) 3-5mg chicken manures charcoal, 3-6mg reed straws charcoal and 4-8mg green peel of walnut charcoals are added in, is heated to 50-
60 DEG C of stirring 15-20min, filtering remove filtrate；
(5) 3-6mg sepiolites, 4-8mg straw mushrooms mushroom bran and 1-2mg lychee exocarp powder are added in, is stirred under rotating speed 100-200r/min
10-20min, filtering remove filtrate；
(6) 5-10mg ammonium nitrate and 3-6mg ammonium oxalate are added in, 10-20min is stirred under rotating speed 200-300r/min, filters, goes
Except filtrate；
(7) content of the heavy metal ion in treated soil is measured.
It is further preferred that the grain size of the sepiolite is 2-5mm.
It is further preferred that rotating speed is 230r/min, mixing time 25min in step (2).
It is further preferred that 55 DEG C are heated in step (4), mixing time 17min.
It is further preferred that rotating speed is 150r/min, mixing time 15min in step (5).
Advantageous effect：After this five step elution method handles contaminated soil, there is the content of each heavy metal ion in soil
Very big decline, wherein, 99.6% and 99.4% is up to respectively to the removal rate of copper ion and cadmium ion, it almost can be complete
Removal, has also respectively reached 94.9% and 93.4%, removal rate is also higher, to heavy metal to the removal rate of mercury ion and lead ion
The repairing effect of contaminated soil is good.
Specific embodiment
Embodiment 1
The method of five step elution method remediating heavy metal soil, includes the following steps：
(1) by 3mg polyanion celluloses, 2mg magnetic graphenes, 2mg graphene oxides, 4mg chitosan magnetics, 2mg activity
10min is mixed in Carbon fibe, 10ml isopropanols and 1000ml deionized waters；
(2) 250g contaminated soils are added in and 20min is stirred under rotating speed 200r/min, filtered, remove filtrate；
(3) 3mg rice hull ash, 4mg phenolate enzymolysis xylogen, 4mg humic acid and 1000ml deionized waters are added in, stirs 5min, mistake
Filter removes filtrate；
(4) 3mg chicken manures charcoal, 3mg reed straws charcoal and 4mg green peel of walnut charcoals are added in, is heated to 50 DEG C of stirrings
15min, filtering remove filtrate；
(5) 3mg sepiolites, 4mg straw mushrooms mushroom bran and 1mg lychee exocarp powder are added in, 10min is stirred under rotating speed 100r/min, is filtered,
Remove filtrate；
(6) 5mg ammonium nitrate and 3mg ammonium oxalate are added in, 10min is stirred under rotating speed 200r/min, is filtered, removes filtrate；
(7) content of the heavy metal ion in treated soil is measured.
Embodiment 2
The method of five step elution method remediating heavy metal soil, includes the following steps：
(1) by 4mg polyanion celluloses, 3mg magnetic graphenes, 3mg graphene oxides, 5mg chitosan magnetics, 3mg activity
15min is mixed in Carbon fibe, 13ml isopropanols and 1400ml deionized waters；
(2) 260g contaminated soils are added in and 25min is stirred under rotating speed 220r/min, filtered, remove filtrate；
(3) 4mg rice hull ash, 5mg phenolate enzymolysis xylogen, 5mg humic acid and 1500ml deionized waters are added in, stirs 7min, mistake
Filter removes filtrate；
(4) 4mg chicken manures charcoal, 4mg reed straws charcoal and 5mg green peel of walnut charcoals are added in, is heated to 55 DEG C of stirrings
15min, filtering remove filtrate；
(5) 4mg sepiolites, 5mg straw mushrooms mushroom bran and 1.5mg lychee exocarp powder are added in, 10- is stirred under rotating speed 100-200r/min
20min, filtering remove filtrate；
(6) 7mg ammonium nitrate and 4mg ammonium oxalate are added in, 15min is stirred under rotating speed 150r/min, is filtered, removes filtrate；
(7) content of the heavy metal ion in treated soil is measured.
Embodiment 3
The method of five step elution method remediating heavy metal soil, includes the following steps：
(1) by 4mg polyanion celluloses, 3mg magnetic graphenes, 4mg graphene oxides, 6mg chitosan magnetics, 4mg activity
15min is mixed in Carbon fibe, 15ml isopropanols and 1500ml deionized waters；
(2) 280g contaminated soils are added in and 25min is stirred under rotating speed 230r/min, filtered, remove filtrate；
(3) 5mg rice hull ash, 6mg phenolate enzymolysis xylogen, 5mg humic acid and 1500ml deionized waters are added in, stirs 9min, mistake
Filter removes filtrate；
(4) 4mg chicken manures charcoal, 5mg reed straws charcoal and 6mg green peel of walnut charcoals are added in, is heated to 55 DEG C of stirrings
18min, filtering remove filtrate；
(5) 5mg sepiolites, 6mg straw mushrooms mushroom bran and 1.5mg lychee exocarp powder are added in, 10- is stirred under rotating speed 100-200r/min
20min, filtering remove filtrate；
(6) 8mg ammonium nitrate and 5mg ammonium oxalate are added in, 15min is stirred under rotating speed 150r/min, is filtered, removes filtrate；
(7) content of the heavy metal ion in treated soil is measured.
Embodiment 4
The method of five step elution method remediating heavy metal soil, includes the following steps：
(1) by 5mg polyanion celluloses, 4mg magnetic graphenes, 5mg graphene oxides, 7mg chitosan magnetics, 5mg activity
20min is mixed in Carbon fibe, 20ml isopropanols and 2000ml deionized waters；
(2) 300g contaminated soils are added in and 30min is stirred under rotating speed 250r/min, filtered, remove filtrate；
(3) 6mg rice hull ash, 8mg phenolate enzymolysis xylogen, 6mg humic acid and 2000ml deionized waters are added in, stirs 10min, mistake
Filter removes filtrate；
(4) 5mg chicken manures charcoal, 6mg reed straws charcoal and 8mg green peel of walnut charcoals are added in, is heated to 60 DEG C of stirrings
20min, filtering remove filtrate；
(5) 6mg sepiolites, 8mg straw mushrooms mushroom bran and 2mg lychee exocarp powder are added in, 10- is stirred under rotating speed 100-200r/min
20min, filtering remove filtrate；
(6) 10mg ammonium nitrate and 6mg ammonium oxalate are added in, 20min is stirred under rotating speed 200r/min, is filtered, removes filtrate；
(7) content of the heavy metal ion in treated soil is measured.
Comparative example 1
The method of five step elution method remediating heavy metal soil, includes the following steps：
(1) by 3mg polyanion celluloses, 2mg magnetic graphenes, 2mg graphene oxides, 4mg chitosan magnetics, 2mg activity
10min is mixed in Carbon fibe, 10ml isopropanols and 1000ml deionized waters；
(2) 250g contaminated soils are added in and 20min is stirred under rotating speed 200r/min, filtered, remove filtrate；
(3) 3mg rice hull ash, 4mg phenolate enzymolysis xylogen, 4mg humic acid and 1000ml deionized waters are added in, stirs 5min, mistake
Filter removes filtrate；
(4) 3mg chicken manure charcoals are added in, are heated to 50 DEG C of stirring 15min, filtering removes filtrate；
(5) 3mg sepiolites, 4mg straw mushrooms mushroom bran and 1mg lychee exocarp powder are added in, 10min is stirred under rotating speed 100r/min, is filtered,
Remove filtrate；
(6) 5mg ammonium nitrate and 3mg ammonium oxalate are added in, 10min is stirred under rotating speed 100r/min, is filtered, removes filtrate；
(7) content of the heavy metal ion in treated soil is measured.
Comparative example 2
The method of five step elution method remediating heavy metal soil, includes the following steps：
(1) by 3mg polyanion celluloses, 2mg magnetic graphenes, 2mg graphene oxides, 4mg chitosan magnetics, 2mg activity
10min is mixed in Carbon fibe, 10ml isopropanols and 1000ml deionized waters；
(2) 250g contaminated soils are added in and 20min is stirred under rotating speed 200r/min, filtered, remove filtrate；
(3) 3mg rice hull ash, 4mg phenolate enzymolysis xylogen, 4mg humic acid and 1000ml deionized waters are added in, stirs 5min, mistake
Filter removes filtrate；
(4) 3mg chicken manures charcoal, 3mg reed straws charcoal and 4mg green peel of walnut charcoals are added in, is heated to 50 DEG C of stirrings
15min, filtering remove filtrate；
(5) 3mg sepiolites are added in, 10min is stirred under rotating speed 100r/min, are filtered, remove filtrate；
(6) 5mg ammonium nitrate and 3mg ammonium oxalate are added in, 10min is stirred under rotating speed 100r/min, is filtered, removes filtrate；
(7) content of the heavy metal ion in treated soil is measured.
Comparative example 3
The method of five step elution method remediating heavy metal soil, includes the following steps：
(1) by 3mg polyanion celluloses, 2mg magnetic graphenes, 2mg graphene oxides, 4mg chitosan magnetics, 2mg activity
10min is mixed in Carbon fibe, 10ml isopropanols and 1000ml deionized waters；
(2) 250g contaminated soils are added in and 20min is stirred under rotating speed 200r/min, filtered, remove filtrate；
(3) 4mg phenolate enzymolysis xylogen and 1000ml deionized waters are added in, stirs 5min, filtering removes filtrate；
(4) 3mg chicken manures charcoal, 3mg reed straws charcoal and 4mg green peel of walnut charcoals are added in, is heated to 50 DEG C of stirrings
15min, filtering remove filtrate；
(5) 3mg sepiolites, 4mg straw mushrooms mushroom bran, 1mg lychee exocarp powder are added in, 10min is stirred under rotating speed 100r/min, is filtered,
Remove filtrate；
(6) 5mg ammonium nitrate and 3mg ammonium oxalate are added in, 10min is stirred under rotating speed 100r/min, is filtered, removes filtrate；
(7) content of the heavy metal ion in treated soil is measured.
Table 1
Note：Contaminated soil before processing copper ion, cadmium ion, mercury ion and lead ion content be respectively 775.45mg/kg,
701.34mg/kg, 685.74mg/kg and 587.66mg/kg
Treated that moiety content index is seen the above table by this method for contaminated soil, and this method is to the removal rate of each heavy metal ion
It is all very high, wherein, 99.6% and 99.4% is up to respectively to the removal rate of copper ion and cadmium ion, can almost be removed completely,
94.9% and 93.4% are also respectively reached to the removal rate of mercury ion and lead ion, removal rate is also higher, to heavy metal pollution
The repairing effect of soil is good.
Claims (5)
1. the method for five step elution method remediating heavy metal soil, it is characterised in that：Include the following steps：
（1）3-5mg polyanion celluloses, 2-4mg magnetic graphenes, 2-5mg graphene oxides, 4-7mg magnetic crusts are gathered
10-20min is mixed in sugar, 2-5mg activated carbon fibre, 10-20ml isopropanols and 1000-2000ml deionized waters；
（2）It adds in 250-300g contaminated soils and 20-30min is stirred under rotating speed 200-250r/min, filter, remove filtrate；
（3）3-6mg rice hull ash, 4-8mg phenolate enzymolysis xylogen, 4-6mg humic acid and 1000-2000ml deionized waters are added in,
5-10min is stirred, filtering removes filtrate；
（4）3-5mg chicken manures charcoal, 3-6mg reed straws charcoal and 4-8mg green peel of walnut charcoals are added in, is heated to
50-60 DEG C of stirring 15-20min, filtering remove filtrate；
（5）3-6mg sepiolites, 4-8mg straw mushrooms mushroom bran and 1-2mg lychee exocarp powder are added in, is stirred under rotating speed 100-200r/min
10-20min, filtering remove filtrate；
（6）5-10mg ammonium nitrate and 3-6mg ammonium oxalate are added in, 10-20min is stirred under rotating speed 200-300r/min, is filtered,
Remove filtrate；
（7）Measure the content of the heavy metal ion in treated soil.
2. the method for five steps elution method remediating heavy metal soil according to claim 1, it is characterised in that：The sepiolite
Grain size be 2-5mm.
3. the method for five steps elution method remediating heavy metal soil according to claim 1, it is characterised in that：The step
（2）Middle rotating speed is 230r/min, mixing time 25min.
4. the method for five steps elution method remediating heavy metal soil according to claim 1, it is characterised in that：The step
（4）In be heated to 55 DEG C, mixing time 17min.
5. the method for five steps elution method remediating heavy metal soil according to claim 1, it is characterised in that：The step
（5）Middle rotating speed is 150r/min, mixing time 15min.
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