CN109954750A - A kind of detection and stabilization treatment method applied to mining area water and soil heavy metal pollution - Google Patents
A kind of detection and stabilization treatment method applied to mining area water and soil heavy metal pollution Download PDFInfo
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- CN109954750A CN109954750A CN201711424659.XA CN201711424659A CN109954750A CN 109954750 A CN109954750 A CN 109954750A CN 201711424659 A CN201711424659 A CN 201711424659A CN 109954750 A CN109954750 A CN 109954750A
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6402—Atomic fluorescence; Laser induced fluorescence
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Abstract
The invention discloses a kind of detection applied to mining area water and soil heavy metal pollution and stabilization treatment methods, the following steps are included: sample acquisition and pretreatment, sample detection, data analysis, heavy metal transformation transformation power model, verifying and optimization are constructed, the present invention provides fundamental basis for ecological risk assessment, control, improvement and the reparation etc. of Some Mining Districts heavy metal pollution and scientific basis, promote the harmonious development of mining area and mining city, there is great application value and social benefit.
Description
Technical field
The present invention relates to metallic pollution detection technique fields, and in particular to one kind is applied to mining area water and soil heavy metal pollution
Detection and stabilization treatment method.
Background technique
Exploit and select the solid waste (ore, ettle, CHARACTERISTICS OF TAILINGS SAND, waste residue etc.) generated during smelting and production dirty in Some Mining Districts
Water etc. enters mining soil by different approaches and leads to heavy metal pollution of soil.By rainfall or the shearing of snowmelt runoff, hit
It hits, wash away, leaching, the collective effects such as immersion, the various heavy metal contaminants in soil occur between soil and diameter stream interface
A variety of physical-chemical reactions such as diffusion, disperse, desorption, dissociation.
For a long time, the tailing Solid state fermentation in metal mine dressing plant is typically all to be deposited by the way of Tailings Dam with disposition
Product waste residue does not only take up a large amount of soil, contaminated soil, surface water, underground water, and many Tailings Dams exceed the time limit or excess load makes
With making Tailings Dam, there are very big security risks, and in addition Tailings Dam is built and maintenance management also needs to put into a large amount of fund.Currently,
The approach for administering heavy metal pollution of soil both at home and abroad, which is summed up, mainly 3 kinds: first is that changing the tax of heavy metal in the soil
State is deposited, it is made to stablize or fix, its activity is reduced, makes its passivation, food chain is detached from, to reduce its migration in the environment
Property and bioavailability；Second is that removing removing heavy metals from soil using various technologies, reaching recycling and reducing weight in soil
The dual purpose of metal；Third is that using various impervious materials, such as cement, clay, slabstone, plastic plate, by contaminated areas with
Uncontaminated area isolation, to reduce or prevent the migration and diffusion of heavy metal.Around this 3 kinds of governance ways, various countries open in succession
Physics, chemistry and biological treating method are sent out.The selection of various methods dependent on soil property, pollution level, final use and
Cost effectiveness analysis.Currently, being broadly divided into two classes in terms of big for the reparation of heavy-metal contaminated soil both at home and abroad: in situ
Reparation and showering.The heavy-metal contaminated soil of Some Mining Districts and surrounding area is repaired generally by the way of in-situ immobilization,
It mainly include physical technique: soil moved in improve the original and method of digging, heat treating process, electrochemical process, isolation investment etc.；Chemical technology: Gu
Fixed/stabilisation, chemical leaching, chemical oxidation/reduction etc.；Bioremediation technology: phytoremediation, microorganism remediation etc.,
These methods respectively have advantage and disadvantage.It is minimum that investment processing cost is isolated, but only heavy metal is isolated, to mining area soil
There are still potential risks for earth ecology；Electrochemical process is more immature, is only applicable to small area pollution, and execute-in-place difficulty is big；Heat
Facture is not suitable for execute-in-place, processing cost height, narrow application range；Chemical method is easy to change the property of soil, causes two
Secondary pollution；The research hotspot that phytoremediation is current heavy-metal contaminated soil Treatment process is carried out using hyperaccumulative plant, but
This there are still some shortcomings, the general plant of plant that especially most of ultraproduct tires out heavy metal is short and small, slow growth,
Biomass is low, thus remediation efficiency is low, required time is long, and to the serious mining soil of heavy metal pollution, hyperaccumulative plant
Generally it is difficult directly to grow；The carrier that microbial remediation method utilizes is living microorganisms, and the discontinuous distribution of pollutant can be every
Disconnected microorganism movement, therefore long processing period, and organic nutrient substance is competed with indigenous microorganism, it is easy to lose activity.
Summary of the invention
(1) technical problems to be solved
In order to overcome the shortage of prior art, it is proposed that a kind of detection and stabilisation applied to mining area water and soil heavy metal pollution
Processing method, to solve the problems mentioned in the above background technology.
(2) technical solution
Of the invention is achieved through the following technical solutions: the invention proposes a kind of applied to mining area water and soil heavy metal pollution
Detection and stabilization treatment method, comprising the following steps:
1) sample acquisition and pretreatment: its sampling density be 0.05-0.06 square kilometres sample one, and using GPS into
The positioning of row sampling point, records its longitude and latitude；Equally uniformly acquire soil sample in sampling area and carry out label record, and to soil types and
Land-Use is recorded,
2) sample detection: flyash, dewatered sludge will be added in heavy metal polluted soil in mine field, is uniformly mixed, by preliminarily stabilised
Change in treated soil and peanut shell is added, is uniformly mixed, and content of beary metal in water sample after processing is measured, heavy metal
Sb, Cd, Hg are disappeared using chloroazotic acid-perchloric acid to be boiled, and Pb, As are disappeared using nitric acid-perchloric acid to be boiled；Sb, Hg, As are using former
Sub- fluorescence spectrophotometry, Cd, Zn, Pb, Mn are measured using atomic absorption spectrophotometry,
3) data are analyzed: the normal distribution-test for carrying out data is examined using SPSS19.0 software K-S method,
4) it constructs heavy metal transformation transformation power model: based on the GIS database of region, being based on GIS technology and RS
Technology selects the one-dimensional migration models of woods Yuhuan mercury, and has carried out the improvement of difference modifying factor and distribution coefficient to the model, obtains
To the Transport And Transformation model of heavy metal,
5) verifying and optimization: determining main affecting parameters by parameters sensitivity analysis, using LH-OAT susceptibility assays,
Parameter sensitivity is expressed as a nondimensional index, reflection model method output result with the minor alteration of model parameter and
The influence degree or sensitivity level of variation, and be applied in SWAT software.
Furthermore, the amount of the flyash is the 5~20% of heavy metal polluted soil in mine field weight.
Furthermore, the amount of the peanut shell is the 0.5~2% of heavy metal polluted soil in mine field weight.
Furthermore, the building heavy metal transformation transformation power model is based on GIS technology and RS technology, selection
Heavy metal kinetic model, the improvement for having carried out element difference modifying factor β and distribution coefficient k to the model obtain
The Transport And Transformation model of Some Mining Districts heavy metal, the improvement of element difference modifying factor β are heavy metals to be predicted and have selected
The amendment of the otherness of heavy metal in model measures the ratio range of identical two Heavy Metallic Elements of sampled point by instrument, first
With in the source program that the model selected is programmed and is embedded in SWAT, operation SWAT obtains a result, and to its analogue value with
Measured value compares, and must receive and pay out the value of assorted coefficient and regression coefficient.
(3) beneficial effect
The present invention compared with the existing technology, has the advantages that
A kind of detection and stabilization treatment method applied to mining area water and soil heavy metal pollution that the present invention mentions is metallic ore
Ecological risk assessment, control, improvement and reparation of area's heavy metal pollution etc. are provided fundamental basis and scientific basis, promote mining area and
The harmonious development of mining city has great application value and social benefit.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer.It should be appreciated that tool described herein
Body embodiment is only used to explain the present invention, is not intended to limit the present invention.
Embodiment:
A kind of detection and stabilization treatment method applied to mining area water and soil heavy metal pollution proposed by the present invention, including it is following
Step:
1) sample acquisition and pretreatment: its sampling density be 0.05-0.06 square kilometres sample one, and using GPS into
The positioning of row sampling point, records its longitude and latitude；Equally uniformly acquire soil sample in sampling area and carry out label record, and to soil types and
Land-Use is recorded,
2) sample detection: flyash, dewatered sludge will be added in heavy metal polluted soil in mine field, is uniformly mixed, by preliminarily stabilised
Change in treated soil and peanut shell is added, is uniformly mixed, and content of beary metal in water sample after processing is measured, heavy metal
Sb, Cd, Hg are disappeared using chloroazotic acid-perchloric acid to be boiled, and Pb, As are disappeared using nitric acid-perchloric acid to be boiled；Sb, Hg, As are using former
Sub- fluorescence spectrophotometry, Cd, Zn, Pb, Mn are measured using atomic absorption spectrophotometry,
3) data are analyzed: the normal distribution-test for carrying out data is examined using SPSS19.0 software K-S method,
4) it constructs heavy metal transformation transformation power model: based on the GIS database of region, being based on GIS technology and RS
Technology selects the one-dimensional migration models of woods Yuhuan mercury, and has carried out the improvement of difference modifying factor and distribution coefficient to the model, obtains
To the Transport And Transformation model of heavy metal,
5) verifying and optimization: determining main affecting parameters by parameters sensitivity analysis, using LH-OAT susceptibility assays,
Parameter sensitivity is expressed as a nondimensional index, reflection model method output result with the minor alteration of model parameter and
The influence degree or sensitivity level of variation, and be applied in SWAT software.
Wherein, the amount of the flyash is the 5~20% of heavy metal polluted soil in mine field weight, the peanut shell
Amount is the 0.5~2% of heavy metal polluted soil in mine field weight, and the building heavy metal transformation transformation power model is based on
GIS technology and RS technology select heavy metal kinetic model, have carried out element difference modifying factor β to the model
Improvement with distribution coefficient k obtains the Transport And Transformation model of Some Mining Districts heavy metal, the improvement of element difference modifying factor β be to
The amendment of the otherness of heavy metal, measures two kinds of huge sum of moneys of identical sampled point by instrument in the heavy metal of prediction and the model selected
Belong to the ratio range of element, first in the source program that the model selected is programmed and is embedded in SWAT, operation SWAT is obtained
As a result, and its analogue value is compared with measured value, the value of assorted coefficient and regression coefficient must be received and paid out.
One, it samples
Heavy-metal contaminated soil: use a height of 54cm × 42cm of length and width × 30cm rectangular plastic hopper from mining area mixing slag
Heap carries out multi-point sampling and acquires 8 casees slag aggregate samples, they are mixed, is stirred evenly, then average to be dispensed into
In each chest, the depth of every case dress is about 25cm, and volume is about 0.048m 3, weight about 76kg, in each plastic box
One aperture of side face drilling, and stoppered with the rubber stopper with plastic pipe, so that every case slag is slightly tilted placement, is collected and drenched with water sample bottle
Filtrate.
Two, sample treatment
8 casees mixing slag samples back every two casees are acquired as a parallel laboratory test, wherein two casees are remembered as blank control
For CK1, CK2；A certain amount of lime, flyash, dewatered sludge, two casees 5% stones of addition are added by the mass ratio of slag in other
Ash and 10% flyash are denoted as A1, A2, and two casees 10% flyash of addition and 10% dewatered sludge are denoted as B1, B2, and in addition two
5% lime is added in case and 10% dewatered sludge is denoted as C1, C2, handles depth about 20cm, and stirring is uniformly mixed it.It puts
After setting 1 year, before addition crushes peanut shell, every case takes out part aggregate sample, and analysis measures its basic physical and chemical and again
Tenor measurement.
Three, it measures
After premenstruum (premenstrua) stabilization processes, 1% is added into CK2, A2, B2, C2 respectively by slag mass ratio and crushes peanut shell,
Change respectively and be denoted as CK3, A3, B3, C3, stir evenly after so that it is sufficiently reacted 3d, carries out the content of heavy metals of different forms
Measurement,
Measurement result explanation, while adding being used in combination for flyash, dewatered sludge and peanut shell, can best will be in slag
Exchangeable species As, organically combine state As are converted to residual form As, i.e. make combining for flyash, dewatered sludge and peanut shell
With can best solidify-stabilize heavy metal As,
According to statistical result, the germination rate that A1 handles vetiver is minimum, is 24%.Analyze related reason, it may be possible to because
After lime and flyash add simultaneously, pozzolanic reaction can occur, generate more stable hydrated calcium silicate and drated calcium aluminate,
Lead to soil hardening, to be unfavorable for the sprouting and growth of plant.So even if lime and flyash have stabilizing heavy metal
Effect, but cannot use simultaneously, i.e., it should not contain two kinds of ingredients of lime and flyash in heavy metal stabilizer simultaneously,
According to statistical result, the germination rate that A1 handles vetiver is minimum, is 24%.Analyze related reason, it may be possible to because
After lime and flyash add simultaneously, pozzolanic reaction can occur, generate more stable hydrated calcium silicate and drated calcium aluminate,
Lead to soil hardening, to be unfavorable for the sprouting and growth of plant.So even if lime and flyash have stabilizing heavy metal
Effect, but cannot use simultaneously, i.e., it should not contain two kinds of ingredients of lime and flyash in heavy metal stabilizer simultaneously.
The above-described embodiments are merely illustrative of preferred embodiments of the present invention, not to structure of the invention
Think and range is defined.Without departing from the design concept of the invention, ordinary people in the field is to technology of the invention
The all variations and modifications that scheme is made, should all drop into protection scope of the present invention, the claimed technology contents of the present invention,
It is all described in the claims.
Claims (4)
1. a kind of detection and stabilization treatment method applied to mining area water and soil heavy metal pollution, it is characterised in that: including with
Lower step:
1) sample acquisition and pretreatment: its sampling density be 0.05-0.06 square kilometres sample one, and using GPS into
The positioning of row sampling point, records its longitude and latitude；Equally uniformly acquire soil sample in sampling area and carry out label record, and to soil types and
Land-Use is recorded,
2) sample detection: flyash, dewatered sludge will be added in heavy metal polluted soil in mine field, is uniformly mixed, by preliminarily stabilised
Change in treated soil and peanut shell is added, is uniformly mixed, and content of beary metal in water sample after processing is measured, heavy metal
Sb, Cd, Hg are disappeared using chloroazotic acid-perchloric acid to be boiled, and Pb, As are disappeared using nitric acid-perchloric acid to be boiled；Sb, Hg, As are using former
Sub- fluorescence spectrophotometry, Cd, Zn, Pb, Mn are measured using atomic absorption spectrophotometry,
3) data are analyzed: the normal distribution-test for carrying out data is examined using SPSS19.0 software K-S method,
4) it constructs heavy metal transformation transformation power model: based on the GIS database of region, being based on GIS technology and RS
Technology selects the one-dimensional migration models of woods Yuhuan mercury, and has carried out the improvement of difference modifying factor and distribution coefficient to the model, obtains
To the Transport And Transformation model of heavy metal,
5) verifying and optimization: determining main affecting parameters by parameters sensitivity analysis, using LH-OAT susceptibility assays,
Parameter sensitivity is expressed as a nondimensional index, reflection model method output result with the minor alteration of model parameter and
The influence degree or sensitivity level of variation, and be applied in SWAT software.
2. a kind of detection applied to mining area water and soil heavy metal pollution according to claim 1 and stabilization processes side
Method, it is characterised in that: the amount of the flyash is the 5~20% of heavy metal polluted soil in mine field weight.
3. a kind of detection applied to mining area water and soil heavy metal pollution according to claim 1 and stabilization processes side
Method, it is characterised in that: the amount of the peanut shell is the 0.5~2% of heavy metal polluted soil in mine field weight.
4. a kind of detection applied to mining area water and soil heavy metal pollution according to claim 1 and stabilization processes side
Method, it is characterised in that: the building heavy metal transformation transformation power model is based on GIS technology and RS technology, selects heavy metal
Kinetic model, the improvement for having carried out element difference modifying factor β and distribution coefficient k to the model obtain metallic ore
The Transport And Transformation model of area's heavy metal, the improvement of element difference modifying factor β are in heavy metal to be predicted and the model selected
The amendment of the otherness of heavy metal measures the ratio range of identical two Heavy Metallic Elements of sampled point by instrument, first with having selected
Model is programmed and in the source program that is embedded in SWAT, and operation SWAT obtains a result, and to its analogue value and measured value
It compares, the value of assorted coefficient and regression coefficient must be received and paid out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711424659.XA CN109954750A (en) | 2017-12-26 | 2017-12-26 | A kind of detection and stabilization treatment method applied to mining area water and soil heavy metal pollution |
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| CN201711424659.XA CN109954750A (en) | 2017-12-26 | 2017-12-26 | A kind of detection and stabilization treatment method applied to mining area water and soil heavy metal pollution |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111581250A (en) * | 2020-04-21 | 2020-08-25 | 中国科学院地理科学与资源研究所 | Quantitative research method for variation of heavy metals in soil around mining area along with natural factors |
| CN112979088A (en) * | 2021-03-09 | 2021-06-18 | 南昌航空大学 | Reduction barrier for treating slag acidic wastewater and application thereof |
| CN112986538A (en) * | 2021-05-06 | 2021-06-18 | 中南大学 | Large-area soil heavy metal detection and space-time distribution characteristic analysis method and system |
-
2017
- 2017-12-26 CN CN201711424659.XA patent/CN109954750A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111581250A (en) * | 2020-04-21 | 2020-08-25 | 中国科学院地理科学与资源研究所 | Quantitative research method for variation of heavy metals in soil around mining area along with natural factors |
| CN111581250B (en) * | 2020-04-21 | 2021-01-08 | 中国科学院地理科学与资源研究所 | Quantitative research method for variation of heavy metals in soil around mining area along with natural factors |
| CN112979088A (en) * | 2021-03-09 | 2021-06-18 | 南昌航空大学 | Reduction barrier for treating slag acidic wastewater and application thereof |
| CN112986538A (en) * | 2021-05-06 | 2021-06-18 | 中南大学 | Large-area soil heavy metal detection and space-time distribution characteristic analysis method and system |
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Application publication date: 20190702 |