CN106903132A - A kind of method of stable environment medium cationic heavy metal contaminants - Google Patents
A kind of method of stable environment medium cationic heavy metal contaminants Download PDFInfo
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- CN106903132A CN106903132A CN201710137656.1A CN201710137656A CN106903132A CN 106903132 A CN106903132 A CN 106903132A CN 201710137656 A CN201710137656 A CN 201710137656A CN 106903132 A CN106903132 A CN 106903132A
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- medicaments
- heavy metal
- soil
- slag
- water body
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 65
- 125000002091 cationic group Chemical group 0.000 title claims abstract description 24
- 239000000356 contaminant Substances 0.000 title claims abstract description 19
- 239000003814 drug Substances 0.000 claims abstract description 78
- 239000002689 soil Substances 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000002893 slag Substances 0.000 claims abstract description 41
- 150000001768 cations Chemical class 0.000 claims abstract description 40
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 37
- 239000011707 mineral Substances 0.000 claims abstract description 37
- 230000008569 process Effects 0.000 claims abstract description 16
- 230000006641 stabilisation Effects 0.000 claims abstract description 16
- PCXNIIXNAHCKDR-UHFFFAOYSA-N [Zn].[Cu].[Ni].[Cd] Chemical compound [Zn].[Cu].[Ni].[Cd] PCXNIIXNAHCKDR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000011105 stabilization Methods 0.000 claims abstract description 10
- 230000005012 migration Effects 0.000 claims abstract description 8
- 238000013508 migration Methods 0.000 claims abstract description 8
- 230000007613 environmental effect Effects 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims abstract description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 17
- 229910021536 Zeolite Inorganic materials 0.000 claims description 15
- 239000010457 zeolite Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000440 bentonite Substances 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- 229910020489 SiO3 Inorganic materials 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 4
- 229910052906 cristobalite Inorganic materials 0.000 claims description 4
- 238000005342 ion exchange Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052682 stishovite Inorganic materials 0.000 claims description 4
- 229910052905 tridymite Inorganic materials 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- PLZFHNWCKKPCMI-UHFFFAOYSA-N cadmium copper Chemical compound [Cu].[Cd] PLZFHNWCKKPCMI-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003344 environmental pollutant Substances 0.000 abstract description 5
- 231100000719 pollutant Toxicity 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000011799 hole material Substances 0.000 abstract 1
- 238000002386 leaching Methods 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 15
- 239000011133 lead Substances 0.000 description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 239000000126 substance Substances 0.000 description 9
- 239000003381 stabilizer Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 229910052793 cadmium Inorganic materials 0.000 description 5
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 239000002910 solid waste Substances 0.000 description 5
- 229910052725 zinc Inorganic materials 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 238000011282 treatment Methods 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910003243 Na2SiO3·9H2O Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 229910052908 analcime Inorganic materials 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910001408 cation oxide Inorganic materials 0.000 description 1
- 150000001767 cationic compounds Chemical class 0.000 description 1
- -1 chabasie Inorganic materials 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052677 heulandite Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 230000009290 primary effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910052679 scolecite Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910021647 smectite Inorganic materials 0.000 description 1
- 229910052665 sodalite Inorganic materials 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 210000000952 spleen Anatomy 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/10—Destroying solid waste or transforming solid waste into something useful or harmless involving an adsorption step
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/20—Agglomeration, binding or encapsulation of solid waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/04—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only applied in a physical form other than a solution or a grout, e.g. as granules or gases
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Soil Sciences (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of method of stable environment medium cationic heavy metal contaminants, A medicaments are added in the water body, soil or slag in cationic heavy metals such as leaded cadmium copper zinc-nickels；During when water body, soil or in slag, the stronger heavy metal cation of animal migration is transferred to the hole of A medicaments or mineral structure and after a period of stabilisation, then B medicaments are added, according to the Na that B medicaments metamorphic process under field conditions (factors) is generated2CO3The formation of the heavy metal cations such as lead cadmium copper zinc-nickel can be promoted to be insoluble in the precipitation of water and be deposited in the surface of A medicaments or hole or mineral structure；The adding procedure of B medicaments is repeated, the pouring of heavy metal goes out content and meets environmental quality standards or engine request in the A medicaments that separate in from water body containing heavy metal or soil and slag after being sufficiently mixed stably with A medicaments.It is of the invention can Simultaneous Stabilization multiple pollutant, expense is low, effect is good, workable, do not cause secondary pollution, beautify the environment, can large scale application.
Description
Technical field
The invention belongs to environmental pollution recovery technique field, it is related to a kind of stable environment medium cationic heavy metal pollution
The method of thing, specifically, be related to it is a kind of using silicon-based mineral material from sewing process stable environment medium cationic with much money
The method for belonging to pollutant.
Background technology
Because the exploitation and smelting of non-ferrous metal produce a large amount of slags containing heavy metal, its contained heavy metal is in earth's surface heap
Can peritropous soil and the substantial amounts of heavy metal contaminants of water body release during product.Currently, soil and heavy metal pollution of water body
It is one of great environmental problem that the whole world is faced.
The method for administering the cationic heavy-metal contaminated soils such as lead cadmium copper zinc-nickel or water body at present is a lot, mainly there is biology
Recovery technique, peripheral doses technology and chemical remediation technology.Bioremediation technology mainly has phytoremediation technology and microorganism to repair
One of recovering technology, key of the technology are to find to single one or more (compound) heavy metals that there is special absorption accumulation ability to surpass
Enriching plant or microorganism, the two of the key of the technology is how quickly to breed the super enriching plant or micro- with larger biomass
It is biological.In view of super enriching plant or microbial species with special absorption accumulation ability are rare, and growing environment is special mostly
And biomass is smaller, therefore the repairing efficiency of the technology is very long and operability is not strong, it is difficult to rapidly and efficiently reduce heavy metal
Environmental hazard.The peripheral doses technology of cationic heavy metal-polluted water includes electrokinetic enrichment partition method, membrane separation process, stabilization
Agent additive process etc., but electrokinetic enrichment partition method and membrane separation process need unique apparatus and energy consumption is higher, and also presence causes secondary
The risk of pollution.The peripheral doses technology of cationic heavy-metal contaminated soil or slag includes electrokinetic enrichment partition method, soil moved in improve the original
Method, high-temperature heat treatment method, rotary kiln sintered method, stabilizer additive process etc..But electrokinetic enrichment partition method, high-temperature heat treatment method and return
Rotary kiln sintering process etc. needs unique apparatus and energy consumption is higher, and soil moved in improve the original rule needs the soil backfill of cleaning, and engineering cost is higher,
And original contaminated soil stills need further to carry out repairing and treating.The chemical repair method bag of cationic heavy metal-polluted water
The technologies such as chemical precipitation, chemical extraction are included, with preferable repairing effect, but then removal ability has for the pollutant of trace
Limit.The chemical remediation technology of cationic heavy-metal contaminated soil or slag is mainly chemical leaching method, chemical stabilizer addition
Method etc., these methods etc. need unique apparatus and chemical reagent, and engineering cost is higher, and operation operation is complicated, and presence causes two
The risk of secondary pollution, or even the structure of soil can be destroyed and soil is lost plantation ability.And soil moved in improve the original rule needs the soil of cleaning
Earth is backfilled, and former contaminated soil stills need further to carry out repairing and treating.
Comparatively speaking, stabilizer additive process is because the range of choice of stabilizer is wider, engineering cost is relatively low, operation operation letter
It is single, in the absence of secondary pollution the advantages of, in the case of with suitable stabilizer, then with efficient contaminated soil or water body or
Slag heavy metal stabilization repair ability.Currently for need stabilized heavy metal medium (soil, slag etc.) be often by its with
Carbonate material lime and clay are mixed, then direct landfill disposal.But by so treatment containing heavy metallic mixture
Still there is certain unstability, heavy metal still has certain leaching ability in carbonate system.But how further to drop
The leaching releasability of heavy metal in the stabilizer containing heavy metal after low reparation, is still to promote the technology spread general
And key.
Zeolite, is the natural alumino-silicate ore of a class, is found in earliest 1756.The general chemical vague generalization of zeolite
Formula is CmDpO2pnH2O, structural formula is A (x/q) [(AlO2)x(SiO2)y]n(H2O), wherein：C is Ca, Na, K, Ba, Sr etc.
Cation, D is Al and Si, p are cationic compound valency, and m is cation number, and n is moisture subnumber, and x is Al atomicities, and y is Si former
Subnumber, (y/x) generally between 1~5, (x+y) is tetrahedral number in unit cell.The zeolite that nature has found has 80
Various, more typical has analcime, chabasie, scolecite, heulandite, sodalite, modenite, foresite etc., and they are total to
With feature be exactly with cavity rack-like structure, i.e., in their crystal, cation oxide aluminosilicate skeleton molecule according to
Certain rule connects together, and centre forms many cavitys, and these cavitys impart the abundant pore structure of zeolite, and zeolite turns into can
To sieve the porous material of material on a molecular scale, thus zeolite is also one kind of molecular sieve.Zeolite can be by C cations
There is ion exchange with the heavy metal cation such as cadmium copper zinc-nickel, and promote its absorption reality to heavy metal cations such as cadmium copper zinc-nickels
Existing its stabilization.
Bentonite is the natural non-metallic mineral products with montmorillonite as main mineral constituent, bentonite have strong hygroscopicity and
Dilatancy and adsorptivity.Smectite structure presss from both sides one layer of alumina octahedral is constituted 2 by two silicon-oxy tetrahedrons：1 type crystal knot
Structure, because the layer structure that montmorillonite structure cell is formed has some cations, such as Ca, Mg, Na, K, and these cations and illiteracy
The effect of de- stone structure cell is very unstable, is easily partially or completely exchanged by other cations, therefore also has preferable ion exchangeable.
Water-soluble silicon substrate mineral material, sodium metasilicate, chemical formula Na2SiO3·9H2O, is a kind of water-soluble silicate, is also
A kind of mineral binder, with cohesive force is strong, intensity is higher, the characteristics of resistance to acids and bases is good and heat-resist.
Zeolite, bentonite and sodium metasilicate are carried out into ratio combination, using mineral from sewing process stable environment medium middle-jiao yang, function of the spleen and stomach
The method of ion heavy metal contaminants not yet met relevant report.
The content of the invention
It is an object of the invention to provide a kind of method of stable environment medium cationic heavy metal contaminants, it is intended to more
Mend long-term effect that dystopy stabilization technology in the administering method of existing heavy metal-polluted water or soil or slag is present not
Well, even there is a problem of causing the dangerous of secondary pollution.Heavy metal cation drenches during the method reaches reduction surrounding medium
Purpose, can Simultaneous Stabilization multiple pollutant, expense is low, effect is good, workable, do not cause secondary pollution, beautify the environment,
Can large scale application.
Its concrete technical scheme is：
A kind of method of stable environment medium cationic heavy metal contaminants, comprises the following steps：
A medicaments are added in S101, the water body in cationic heavy metals such as leaded cadmium copper zinc-nickels, soil or slag, using A
The flourishing pore structure of medicament and absorption and ion-exchange capacity so that water body, soil or the stronger huge sum of money of animal migration in slag
Category cation is transferred in the hole of A medicaments or mineral structure；
S102, when water body, soil or in slag, the stronger heavy metal cation of animal migration is transferred to the hole or ore deposit of A medicaments
In thing structure and after a period of stabilisation, then B medicaments are added, generated according to B medicaments metamorphic process under field conditions (factors)
Na2CO3Surface or the hole for promoting the heavy metal cations such as lead cadmium copper zinc-nickel to form the precipitation for being insoluble in water and being deposited on A medicaments
Or in mineral structure, the H of generation of going bad2SiO3Parcel suture further can be carried out to A medicaments so that heavy metal cation is wrapped
Wrap up in and be sewn in the mineral structure of A medicaments；
S103, the adding procedure for repeating B medicaments, the A medicaments or abundant with A medicaments in from water body containing heavy metal separate
The pouring of heavy metal goes out content and meets environmental quality standards or engine request in soil and slag after mixed stability.
The surrounding medium refers to water body or soil or slag, and the heavy metal contaminants refer to and contain the sun such as lead cadmium copper zinc-nickel
The Single Pollution or combined pollution form of ionic heavy metal.
A certain amount of A medicaments are added in the water body or soil or slag containing heavy metal cation, after a period of stabilisation,
B medicaments are added, by mineral material from suturing, heavy metal ion drenches the process in reaching reduction surrounding medium；
The A medicaments of addition are zeolite and bentonite mass ratio between 1：5~1：Zeolite and bentonitic mixing between 1
Thing, the B medicaments of addition are water miscible silicon-based mineral material sodium metasilicate.
Further, for cation heavy metal water body, the A dosings of addition with the 50 of heavy metal quality~
100 times are advisable；Environment temperature is maintained in the range of 15~35 DEG C, and pH is higher than 4.0, be sufficiently stirred for no less than after 4 hours, standing or
It is centrifuged or is separated by filtration solid residue, the A medicament mineral grains that acquisition is contacted with heavy metal cation.
Further, for cation heavy metal soil and slag, need to dig out soil and be broken into powder (grain in advance
Footpath is less than 60 mesh, and less than 20%), the A dosings for then adding are advisable moisture content with the 1%~5% of soil quality, A medicaments
Middle zeolite and bentonitic mass ratio are between 1：5~1：Between 1, after fully mixing, spray water makes mixture moisture exist
Between 20%~30%, then one week is stood in the range of 15~35 DEG C of environment temperature, obtain the A contacted with heavy metal cation
Medicament mineral grain and heavy-metal contaminated soil mixture.
Further, obtain by after A chemicals treatments or the solid mixture of culture, adding a certain proportion of water-soluble B
Medicament mineral material, can be directly added into or spray according to condition, then be sufficiently mixed again uniform.
Further, for cation heavy metal water body, the B dosings of addition are with the 0.1~2 of A pharmacy qualities
It is advisable again；For cation heavy metal soil and slag, the B dosings of addition are with 5~10 times of A dosings
Preferably；After being then sufficiently mixed, make the accumulation horizon thickness of solid no more than 50cm, one is stood in the range of 15~35 DEG C of environment temperature
Week.The primary effect of turning daily during carrying out of having ready conditions is more preferable.
Further, according to water body containing heavy metal, soil and slag composition and existence form and to stabilization processes after
The specific requirement that heavy metal drenches output capacity is different, repeats and adds B medicaments 1~3 time, until the water of heavy metal is extracted drenches content
Meet environmental quality standards or drench requirement.
Further, the surrounding medium refers to water body or soil or slag, and the heavy metal contaminants refer to and contain lead cadmium copper
The Single Pollution or combined pollution form of the cationic heavy metal such as zinc-nickel.
Compared with prior art, beneficial effects of the present invention：
1st, mineral material of the present invention is cheap zeolite, bentonite and the silicon that acquisition is easily bought in market
Sour sodium.The material is natural minerals, is readily available, for the repairing and treating for reducing Heavy-metal Polluted Environment provides convenient reparation
Material.
2nd, the silicon-based mineral material sodium metasilicate of use of the present invention, is a kind of water-soluble silicate, is that a kind of mineral are sticked
Mixture, with cohesive force is strong, intensity is higher, the characteristics of resistance to acids and bases is good and heat-resist.By A medicaments and B medicaments in sequence
Use cooperatively, the characteristics of using B medicament metamorphic processes, may be such that heavy metal cation is firm from the process for suturing in B medicaments
Parcel is sewn in the mineral structure of A medicaments.
3rd, the present invention has and can go simultaneously compared to conventional art with more preferable heavy metal stablizing effect, and the present invention
Except multiple pollutant, expense is low, effect is good, workable, do not cause secondary pollution, conserve water and soil, beautify the environment the advantages of,
Can large scale application.
Brief description of the drawings
Fig. 1 is the flow chart of the method for stable environment medium cationic heavy metal contaminants.
Specific embodiment
Technical scheme is described in more detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of method of stable environment medium cationic heavy metal contaminants, comprises the following steps：
A medicaments are added in S101, the water body in cationic heavy metals such as leaded cadmium copper zinc-nickels, soil or slag, using A
The flourishing pore structure of medicament and absorption and ion-exchange capacity so that water body, soil or the stronger huge sum of money of animal migration in slag
Category cation is transferred in the hole of A medicaments or mineral structure；
S102, when water body, soil or in slag, the stronger heavy metal cation of animal migration is transferred to the hole or ore deposit of A medicaments
In thing structure and after a period of stabilisation, then B medicaments are added, generated according to B medicaments metamorphic process under field conditions (factors)
Na2CO3The surface or hole that the heavy metal cations such as lead cadmium copper zinc-nickel can be promoted to form the precipitation for being insoluble in water and A medicaments are deposited on
In gap or mineral structure, the H of generation of going bad2SiO3Parcel suture further can be carried out to A medicaments so that heavy metal cation quilt
Parcel is sewn in the mineral structure of A medicaments；
S103, the adding procedure for repeating B medicaments, the A medicaments or abundant with A medicaments in from water body containing heavy metal separate
The pouring of heavy metal goes out content and meets environmental quality standards or engine request in soil and slag after mixed stability.
The surrounding medium refers to water body or soil or slag, and the heavy metal contaminants refer to and contain the sun such as lead cadmium copper zinc-nickel
The Single Pollution or combined pollution form of ionic heavy metal.
Embodiment
Agricultural land soil, slag area and slag in Fengxian County, Shaanxi, China heavy metal pollution have carried out experiment and have ground in drenching waste water
Study carefully, the average content of contaminated area Copper In The Soil, cadmium, lead, zinc and the nickel is respectively 83.2mg/kg, 4.3mg/kg, 168.1mg/
Kg, 2441.7mg/kg and 34.8mg/kg, the average content of copper, cadmium, lead, zinc and nickel is respectively in the contaminated area slag
207.5mg/kg, 24.1mg/kg, 336.0mg/kg, 4731.2mg/kg and 39.4mg/kg, the contaminated area slag drench in waste water
The average content of copper, cadmium, lead, zinc and nickel is respectively 0.34mg/L, 0.41mg/L, 0.60mg/L, 3.0mg/L and 0.15mg/L,
pH 2.8.Before treatment, first drench wastewater pH by slag to adjust between 4.0~9.0, soil and slag are directly broken into particle diameter
Powder less than 60 mesh, moisture content less than 20%.
Then, in 1 liter of slag drenches waste water, A 0.22~0.45g of medicament are added, after being sufficiently stirred for no less than 4 hours,
It is separated by filtration solid residue, the A medicament mineral grains that acquisition is contacted with heavy metal cation.Then 0.2~0.9 B medicines are added
Agent, one week is stood after being then sufficiently mixed in the range of 15~35 DEG C.Being passed through respectively containing heavy metallic mixture after stitching processing《Gu
Body waste Leaching leaching method hac buffer method》(HJ/T300-2007)、《Solid waste Leaching leaching method
Sulfonitric method》《HJ/T299-2007》With《Solid waste Leaching leaching method horizontal vibration method》《HJ557-2009》Enter
Row heavy metal leaching is tested, and the content of copper, cadmium, lead, zinc and nickel is below in leachates《Hazardous waste judging standard Leaching
Differentiate》The limit value of (GB 5085.3-2007), some are even below Thermo Scientific CAP6000 types plasma hair
Penetrate the test limit of spectrometer.
In the soil and slag that 1000g is directly broken into powder, A 1~5g of medicament are added, after stirring, sprinkling
Water makes mixture moisture between 20%~30%, is then sufficiently mixed again, and stands one in the range of 15~35 DEG C
Week.Then the B medicaments of 5~50g are added, then is sufficiently mixed, and one week is stood in the range of 15~35 DEG C.After stitching processing
Passed through respectively containing heavy metallic mixture《Solid waste Leaching leaching method hac buffer method》(HJ/T300-2007)、
《Solid waste Leaching leaching method sulfonitric method》《HJ/T299-2007》With《Solid waste Leaching leaching method
Horizontal vibration method》《HJ557-2009》Heavy metal leaching test is carried out, the content of copper, cadmium, lead, zinc and nickel is below in leachates
《Hazardous waste judging standard leaching characteristic identification》The limit value of (GB 5085.3-2007), some are even below Thermo
The test limit of Scientific CAP6000 type plasma emission spectrometers.
Electronic Speculum and energy spectrum analysis further are scanned to the material after treatment, are as a result found treated containing heavy metal
In mineral solids particle, the surface that the heavy metal cation such as lead cadmium copper zinc-nickel forms the precipitation for being insoluble in water and is deposited on A medicaments
Or in hole or mineral structure, and the H of B medicaments rotten generation under field conditions (factors)2SiO3Further A medicaments can be wrapped
Wrap up in suture so that heavy metal cation is wrapped and is sewn in the mineral structure of A medicaments.
The experiment shows that A medicaments and B medicaments are used cooperatively, to surrounding medium in the weight such as the lead cadmium copper zinc-nickel of easy migration
Metal cation has good stabilization, using water-soluble silicon substrate B medicaments mineral metamorphic process from suture feature, can enter
One step promotes the stabilization of surrounding medium cationic heavy metal contaminants, can be used for the heavy metals such as repairing and treating lead cadmium copper zinc-nickel sun
The water body of ion Single Pollution and combined pollution, soil and slag.
The above, preferably specific embodiment only of the invention, protection scope of the present invention not limited to this are any ripe
Those skilled in the art are known in the technical scope of present disclosure, the letter of the technical scheme that can be become apparent to
Altered or equivalence replacement are each fallen within protection scope of the present invention.
Claims (5)
1. a kind of method of stable environment medium cationic heavy metal contaminants, it is characterised in that
A medicaments are added in S101, the water body in leaded cadmium copper zinc-nickel cationic heavy metal, soil or slag, is sent out using A medicaments
The pore structure that reaches and absorption and ion-exchange capacity so that water body, soil or animal migration is stronger in slag heavy metal sun from
Son is transferred in the hole of A medicaments or mineral structure；
S102, when water body, soil or in slag, the stronger heavy metal cation of animal migration is transferred to the hole or mineral knot of A medicaments
In structure and after a period of stabilisation, then B medicaments are added, according to the Na that B medicaments metamorphic process under field conditions (factors) is generated2CO3
Surface or hole or the mineral that lead cadmium copper zinc-nickel heavy metal cation can be promoted to form the precipitation for being insoluble in water and A medicaments are deposited on
In structure, the H of generation of going bad2SiO3Parcel suture further can be carried out to A medicaments so that heavy metal cation is wrapped suture
In the mineral structure of A medicaments；
S103, repeat B medicaments adding procedure, in from water body containing heavy metal separation A medicaments or be sufficiently mixed with A medicaments
The pouring of heavy metal goes out content and meets environmental quality standards or engine request in soil and slag after stabilization；
The surrounding medium refers to water body or soil or slag, and the heavy metal contaminants refer to and contain lead cadmium copper zinc-nickel cationic
The Single Pollution or combined pollution form of heavy metal；
A certain amount of A medicaments are added in the water body or soil or slag containing heavy metal cation, after a period of stabilisation, then is added
Enter B medicaments, by mineral material from suturing, heavy metal ion drenches the process in reaching reduction surrounding medium；
The A medicaments of addition are zeolite and bentonite mass ratio between 1：5~1：Zeolite and bentonitic mixture between 1, add
Plus B medicaments be water miscible silicon-based mineral material sodium metasilicate.
2. the method for stable environment medium cationic heavy metal contaminants according to claim 1, it is characterised in that right
For cation heavy metal water body, the A dosings of addition are attached most importance to 50~100 times of metal quality；Environment temperature is maintained
In the range of 15~35 DEG C, pH is higher than 4.0, is sufficiently stirred for time >=4 hour, stands or is centrifuged or is separated by filtration solid residue,
The A medicament mineral grains that acquisition is contacted with heavy metal cation.
3. the method for stable environment medium cationic heavy metal contaminants according to claim 1, it is characterised in that right
For cation heavy metal soil and slag, need to dig out soil and be broken into powder in advance, the particle diameter after crushing is less than 60
Mesh, moisture content is less than 20%, and the A dosings for then adding are zeolite and bentonite in 1%~5%, the A medicaments of soil quality
Mass ratio between 1：5~1：Between 1, after fully mixing, spray water makes mixture moisture between 20%~30%,
Stand one week in the range of 15~35 DEG C of environment temperature again, obtain the A medicaments mineral grain that is contacted with heavy metal cation and
Heavy-metal contaminated soil mixture.
4. the method for stable environment medium cationic heavy metal contaminants according to claim 1, it is characterised in that right
For cation heavy metal water body, the B dosings of addition are 0.1~2 times of A pharmacy qualities；For cation weight
For metal soil and slag, the B dosings of addition are 5~10 times of A dosings；After being then sufficiently mixed, make solid
Accumulation horizon thickness be no more than 50cm, in the range of 15~35 DEG C of environment temperature stand one week；Have ready conditions during carrying out and turn over daily
Heap is once.
5. the method for stable environment medium cationic heavy metal contaminants according to claim 1, it is characterised in that step
The number of times that the adding procedure of B medicaments is repeated in rapid S103 is 1~3 time.
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| CN111872101A (en) * | 2020-07-23 | 2020-11-03 | 西南科技大学 | Method for treating strontium in soil by using montmorillonite/carbonate mineralized bacteria aggregates |
| CN113426826A (en) * | 2021-07-27 | 2021-09-24 | 同济大学 | Method for repairing heavy metal contaminated soil |
| US11414334B2 (en) | 2020-10-09 | 2022-08-16 | United States Government, as represented by the Administrator of the U.S. EPA | Method for sequestering ions in an environmental matrix |
| CN114958380A (en) * | 2021-03-01 | 2022-08-30 | 中国科学院大学 | Repairing agent for repairing lead-cadmium combined polluted soil and using method thereof |
| CN117660766A (en) * | 2024-01-23 | 2024-03-08 | 惠州金茂源环保科技有限公司 | Method and system for extracting and recovering heavy metals in sludge |
| US12097546B2 (en) | 2020-10-09 | 2024-09-24 | United States Government, as represented by the Administrator of the U.S. EPA | Method for sequestering ions in an environmental matrix |
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