CN106398705A - Solidifying agent for stabilizing heavy metal Zn in soil and using method thereof - Google Patents
Solidifying agent for stabilizing heavy metal Zn in soil and using method thereof Download PDFInfo
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- CN106398705A CN106398705A CN201610726060.0A CN201610726060A CN106398705A CN 106398705 A CN106398705 A CN 106398705A CN 201610726060 A CN201610726060 A CN 201610726060A CN 106398705 A CN106398705 A CN 106398705A
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- heavy metal
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- soil
- stable soil
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- 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
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention relates to a solidifying agent for stabilizing heavy metal Zn in soil and a using method thereof, and belongs to the technical field of environmental engineering. The solidifying agent for stabilizing the heavy metal Zn in the soil and the using method thereof are provided for aiming at the problems that according to solidification stabilization methods in the prior art, the amount of a solidifying agent is too large, cracking of a solidified body may be caused due to the effect of a long-term stress load and wet and dry cycle to accelerate leaching of heavy metal ions in the solid, and the environmental risk is high. First, a natural plant part with heavy metal Zn attraction effect is fermented for extraction of useful components, then carbonized bamboo particles are used as a carrier for adsorption of fermentation extract, and finally, the fermentation extract is mixed with vermiculite and other materials for preparation of the solidifying agent for stabilizing the heavy metal Zn in the soil for use. The solidifying agent is stable in Zn metal solidification, may not seep out, and has no harm to the environment.
Description
Technical field
The present invention relates to the curing agent of heavy metal Zn and its using method in a kind of stable soil, belong to environment project
Field.
Background technology
Currently, heavy metal pollution gives people quality of life and healthy bring very big impact, seriously damage group
Many health, jeopardize Environmental security, affect social stability.Heavy metal pollution has chronicity, cumulative bad, latency and irreversibility
The features such as, its harm is big, difficulty of governance is big, high cost, and the eco-toxicity risk that especially heavy metal is induced increasingly is subject to
Concern, the heavy metal pollution of soil particularly associating with grain-production even more obtains most attention.
The main disposal method of heavy metal pollution at present, is the toxic being reduced waste residue by chemical reaction, then enters again
Row subsequent treatment.However, so processing one side high cost, on the other hand nor thoroughly process, even if therefore employing one
A little chemical treatments, the waste residue after its process still has very strong pollution and murder by poisoning.Existing heavy metal pollution soil consolidator is general
All over adopting cement, solidification effect, relying on addition more, preparation condition numerous and diverse it is difficult to control cost, long-time stability are poor, Er Qiexian
There is curing curing heavy metal species more single, complex operation, poor controllability, lead to heavy metal polluted soil solidification and stabilization
Remediation efficiency is low, and secondary pollution and environmental risk are big, high cost.
The repairing and treating method of heavy metal polluted soil mainly has solidification and stabilization, drip washing, the reparation of dynamic electricity, phytoremediation, glass
The method such as glass solidification and steam extraction, in numerous restorative procedures, solidification and stabilization method is considered as maximally efficient reparation
One of method., there is problems with current solidification and stabilization treatment technology：(1) curing agent addition is excessive；(2) firming body
The cracking leading under long-term stress load and drying and watering cycle effect, accelerates the leaching of heavy metal ion in firming body；(3)
Environmental risk is high.
Content of the invention
The technical problem to be solved：Excessive for current pin solidification and stabilization method curing agent addition, Gu
Change the cracking that body leads under long-term stress load and drying and watering cycle effect, accelerate the leaching of heavy metal ion in firming body
And the problem that environmental risk is high, the invention provides the curing agent of heavy metal Zn and its using method in a kind of stable soil, this
Invention provides the curing agent of heavy metal Zn and its using method in a kind of stable soil, and the present invention first passes through natural plants
In, heavy metal Zn has the position of sucking action, carries out fermentation and extracts beneficiating ingredient, then is used as load by carbonized bamboo particle
Body, adsorbs to extractive from fermentative, is finally mixed with materials such as vermiculites again, and enforcement of going forward side by side is used, thus being prepared into stable
The curing agent of heavy metal in soil Zn and its using method, the present invention solidifies Zn stabilized metal, will not ooze out, no to environment simultaneously
Harm.For solving above-mentioned technical problem, the technical solution used in the present invention is：The curing agent of heavy metal Zn in a kind of stable soil
And its using method it is characterised in that：Count by weight, in described stable soil, the curing agent of heavy metal Zn is by following four
One-tenth is grouped into：53～56 parts of microbe granulars, 26～32 parts of vermiculites, 18～19 parts of calcium lignosulfonates and 12～16 portions of vegetations
Ash.
The preparation method of described microbe granular is：
(1) count by weight, take 30～35 parts of cuckoo roots, 28～30 parts of poplar roots and 42～45 parts of pure water, put into and squeeze the juice
Squeezed the juice in machine, collection squeezeding juice, in mass ratio 5: 2: 1, take squeezeding juice, peptone and agar, stir, put into fermentation
In tank, add the bog moss of squeezeding juice quality 4～6%, design temperature is 24～32 DEG C, with 120r/min stirring fermentation 32～
35h；
(2) after above-mentioned fermentation ends, the fermenting mixture in fermentation tank is put in centrifuge, with 5000r/min centrifugation point
From 8～12min, collect supernatant, use quality fraction is that 10% sodium hydroxide solution adjusts pH to 7.5～8.0, obtains microorganism
Bacterium solution, standby；
(3) press solid-to-liquid ratio 1: 3, take new fresh bamboo tube and mass fraction to put in water-bath for 25% hydrogen peroxide solution, design temperature
95～100 DEG C, it is incubated 1～2h, subsequently filters, then thick bamboo tube is put in carbide furnace, protected using nitrogen, in 400～500 DEG C of carbon
After changing 1～2h, carbide taking-up is put in grinding mill and is ground, cross 50 mesh sieves, collect the particle that sieves, obtain microbe granular
Carrier；
(4) press solid-to-liquid ratio 1: 2～4, take mentioned microorganism particulate vector and standby microbial inoculum to stir, at 28～34 DEG C
Standing 3～5h, subsequent freeze-drying, collect dried object, you can obtain microbe granular.
In described stable soil, the using method of the curing agent of heavy metal Zn is：In set ratio, first by vermiculite,
Calcium lignosulfonate and plant ash are put in grinding mill and are ground, and cross 50 mesh sieves, collect the particle that sieves, mixing with microbe granular
Uniformly, obtain the curing agent of heavy metal Zn in stable soil, by it with the soil containing heavy metal Zn, in mass ratio 1: 13～20,
Mix, obtain compound, then the water with mixture quality 50～54%, mix, standing shaping, complete to solidify, you can.
The application process of the present invention is：Count by weight, take 53～56 parts of microbe granulars, 26～32 parts of vermiculites, 18
Vermiculite, calcium lignosulfonate and plant ash are put into grinding mill by～19 parts of calcium lignosulfonates and 12～16 parts of plant ash first
Middle grinding, crosses 50 mesh sieves, collects and sieves particle, mixing with microbe granular, obtains consolidating of heavy metal Zn in stable soil
Agent, by it with the soil containing heavy metal Zn, in mass ratio 1: 13～20, mix, obtain compound, then with compound matter
The water of amount 50～54%, mixes, standing shaping, completes to solidify, you can.
The method have the benefit that：
(1) in the stable soil obtained by the present invention, the curing agent of heavy metal Zn is more than 96% to the adsorption rate of Zn；
(2) in the stable soil obtained by the present invention, the curing agent of heavy metal Zn forms good microstructure, effectively reduce or
Prevent heavy metal Zn element leaching and with extraneous transmission；
(3) preparation cost of the present invention low it is easy to operation.
Specific embodiment
The curing agent of heavy metal Zn and its using method in a kind of stable soil it is characterised in that：Count by weight, institute
The curing agent stating heavy metal Zn in stable soil is become to be grouped into by following four：53～56 portions of microbe granulars, 26～32 portions of leech
Stone, 18～19 parts of calcium lignosulfonates and 12～16 parts of plant ash.
The preparation method of described microbe granular is：Count by weight, take 30～35 parts of cuckoo roots, 28～30 portions of poplars
Tree root and 42～45 parts of pure water, put in juice extractor and are squeezed the juice, collect squeezeding juice, in mass ratio 5: 2: 1, take squeezeding juice,
Peptone and agar, stir, and put in fermentation tank, add the bog moss of squeezeding juice quality 4～6%, and design temperature is
24～32 DEG C, fermentation 32～35h is stirred with 120r/min；After above-mentioned fermentation ends, the fermenting mixture in fermentation tank is put
Enter in centrifuge, with 5000r/min centrifugation 8～12min, collect supernatant, use quality fraction is 10% NaOH
Solution adjusts pH to 7.5～8.0, obtains microbial inoculum, standby；By solid-to-liquid ratio 1: 3, new fresh bamboo tube and mass fraction is taken to be 25%
Hydrogen peroxide solution is put in water-bath, 95～100 DEG C of design temperature, is incubated 1～2h, subsequently filters, then thick bamboo tube is put into carbonization
In stove, protected using nitrogen, after 400～500 DEG C of carbonization 1～2h, carbide taking-up is put in grinding mill and is ground, mistake
50 mesh sieves, collect the particle that sieves, obtain microbe granular carrier；By solid-to-liquid ratio 1: 2～4, take mentioned microorganism particulate vector and standby
Stirred with microbial inoculum, stand 3～5h, subsequent freeze-drying at 28～34 DEG C, collect dried object, you can obtain micro- life
Composition granule.
In described stable soil, the using method of the curing agent of heavy metal Zn is：In set ratio, first by vermiculite,
Calcium lignosulfonate and plant ash are put in grinding mill and are ground, and cross 50 mesh sieves, collect the particle that sieves, mixing with microbe granular
Uniformly, obtain the curing agent of heavy metal Zn in stable soil, by it with the soil containing heavy metal Zn, in mass ratio 1: 13～20,
Mix, obtain compound, then the water with mixture quality 50～54%, mix, standing shaping, complete to solidify, you can.
Example 1
The curing agent of heavy metal Zn and its using method in a kind of stable soil it is characterised in that：Count by weight, institute
The curing agent stating heavy metal Zn in stable soil is become to be grouped into by following four：53 parts of microbe granulars, 32 parts of vermiculites, 19 parts of wood
Quality sulfoacid calcium and 16 parts of plant ash.
The preparation method of described microbe granular is：Count by weight, take 30 parts of cuckoo roots, 30 parts of poplar roots and 45
Part pure water, puts in juice extractor and is squeezed the juice, collection squeezeding juice, and in mass ratio 5: 2: 1, take squeezeding juice, peptone and agar,
Stir, put in fermentation tank, add the bog moss of squeezeding juice quality 4%, design temperature is 24 DEG C, is stirred with 120r/min
Mix fermentation 32h；After above-mentioned fermentation ends, the fermenting mixture in fermentation tank is put in centrifuge, with 5000r/min centrifugation
Separate 8min, collect supernatant, use quality fraction is that 10% sodium hydroxide solution adjusts pH to 7.5, obtains microbial inoculum, standby
With；By solid-to-liquid ratio 1: 3, new fresh bamboo tube and mass fraction is taken to put in water-bath for 25% hydrogen peroxide solution, 95 DEG C of design temperature,
Insulation 1h, is subsequently filtered, then thick bamboo tube is put in carbide furnace, protected using nitrogen, after 400 DEG C of carbonization 1h, carbide is taken
Go out to put in grinding mill and be ground, cross 50 mesh sieves, collect the particle that sieves, obtain microbe granular carrier；By solid-to-liquid ratio 1: 2, take
Mentioned microorganism particulate vector and standby microbial inoculum stir, and stand 3h, subsequent freeze-drying at 28 DEG C, collect drying
Thing, you can obtain microbe granular.
In described stable soil, the using method of the curing agent of heavy metal Zn is：In set ratio, first by vermiculite,
Calcium lignosulfonate and plant ash are put in grinding mill and are ground, and cross 50 mesh sieves, collect the particle that sieves, mixing with microbe granular
Uniformly, obtain the curing agent of heavy metal Zn in stable soil, by it with the soil containing heavy metal Zn, in mass ratio 1: 13, mixing
Uniformly, obtain compound, then the water with mixture quality 50%, mix, standing shaping, complete to solidify, you can.
After testing 97% is reached to the adsorption rate of metal Zn.
Example 2
The curing agent of heavy metal Zn and its using method in a kind of stable soil it is characterised in that：Count by weight, institute
The curing agent stating heavy metal Zn in stable soil is become to be grouped into by following four：56 parts of microbe granulars, 26 parts of vermiculites, 18 parts of wood
Quality sulfoacid calcium and 12 parts of plant ash.
The preparation method of described microbe granular is：Count by weight, take 30 parts of cuckoo roots, 30 parts of poplar roots and 45
Part pure water, puts in juice extractor and is squeezed the juice, collection squeezeding juice, and in mass ratio 5: 2: 1, take squeezeding juice, peptone and agar,
Stir, put in fermentation tank, add the bog moss of squeezeding juice quality 6%, design temperature is 32 DEG C, is stirred with 120r/min
Mix fermentation 35h；After above-mentioned fermentation ends, the fermenting mixture in fermentation tank is put in centrifuge, with 5000r/min centrifugation
Separate 12min, collect supernatant, use quality fraction is that 10% sodium hydroxide solution adjusts pH to 8.0, obtains microbial inoculum,
Standby；By solid-to-liquid ratio 1: 3, new fresh bamboo tube and mass fraction is taken to put in water-bath for 25% hydrogen peroxide solution, design temperature 100
DEG C, it is incubated 2h, subsequently filter, then thick bamboo tube is put in carbide furnace, protected using nitrogen, after 500 DEG C of carbonization 2h, by carbide
Taking-up is put in grinding mill and is ground, and crosses 50 mesh sieves, collects the particle that sieves, obtains microbe granular carrier；By solid-to-liquid ratio 1: 4,
Take mentioned microorganism particulate vector and standby microbial inoculum to stir, stand 5h, subsequent freeze-drying at 34 DEG C, collect dry
Dry thing, you can obtain microbe granular.
In described stable soil, the using method of the curing agent of heavy metal Zn is：In set ratio, first by vermiculite,
Calcium lignosulfonate and plant ash are put in grinding mill and are ground, and cross 50 mesh sieves, collect the particle that sieves, mixing with microbe granular
Uniformly, obtain the curing agent of heavy metal Zn in stable soil, by it with the soil containing heavy metal Zn, in mass ratio 1: 20, mixing
Uniformly, obtain compound, then the water with mixture quality 54%, mix, standing shaping, complete to solidify, you can.
After testing 98% is reached to the adsorption rate of metal Zn.
Example 3
The curing agent of heavy metal Zn and its using method in a kind of stable soil it is characterised in that：Count by weight, institute
The curing agent stating heavy metal Zn in stable soil is become to be grouped into by following four：54 parts of microbe granulars, 29 parts of vermiculites, 18 parts of wood
Quality sulfoacid calcium and 14 parts of plant ash.
The preparation method of described microbe granular is：Count by weight, take 33 parts of cuckoo roots, 29 parts of poplar roots and 43
Part pure water, puts in juice extractor and is squeezed the juice, collection squeezeding juice, and in mass ratio 5: 2: 1, take squeezeding juice, peptone and agar,
Stir, put in fermentation tank, add the bog moss of squeezeding juice quality 5%, design temperature is 28 DEG C, is stirred with 120r/min
Mix fermentation 34h；After above-mentioned fermentation ends, the fermenting mixture in fermentation tank is put in centrifuge, with 5000r/min centrifugation
Separate 10min, collect supernatant, use quality fraction is that 10% sodium hydroxide solution adjusts pH to 7.8, obtains microbial inoculum,
Standby；By solid-to-liquid ratio 1: 3, new fresh bamboo tube and mass fraction is taken to put in water-bath for 25% hydrogen peroxide solution, design temperature 98
DEG C, it is incubated 1.5h, subsequently filter, then thick bamboo tube is put in carbide furnace, protected using nitrogen, after 450 DEG C of carbonization 1.5h, by carbon
Compound is taken out to put in grinding mill and is ground, and crosses 50 mesh sieves, collects the particle that sieves, obtains microbe granular carrier：By solid-to-liquid ratio 1
: 3, take mentioned microorganism particulate vector and standby microbial inoculum to stir, stand 4h, subsequent freeze-drying at 30 DEG C, receive
Collection dried object, you can obtain microbe granular.
In described stable soil, the using method of the curing agent of heavy metal Zn is：In set ratio, first by vermiculite,
Calcium lignosulfonate and plant ash are put in grinding mill and are ground, and cross 50 mesh sieves, collect the particle that sieves, mixing with microbe granular
Uniformly, obtain the curing agent of heavy metal Zn in stable soil, by it with the soil containing heavy metal Zn, in mass ratio 1: 16, mixing
Uniformly, obtain compound, then the water with mixture quality 52%, mix, standing shaping, complete to solidify, you can.
After testing 99% is reached to the adsorption rate of metal Zn.
Claims (3)
1. in a kind of stable soil the curing agent of heavy metal Zn and its using method it is characterised in that：Count by weight, described
In stable soil, the curing agent of heavy metal Zn is become to be grouped into by following four：53～56 parts of microbe granulars, 26～32 parts of vermiculites,
18～19 parts of calcium lignosulfonates and 12～16 parts of plant ash.
2. the curing agent of heavy metal Zn and its using method in a kind of stable soil according to claim 1, its feature exists
In：The preparation method of described microbe granular is：
(1) count by weight, take 30～35 parts of cuckoo roots, 28～30 parts of poplar roots and 42～45 parts of pure water, put into and squeeze the juice
Squeezed the juice in machine, collection squeezeding juice, in mass ratio 5: 2: 1, take squeezeding juice, peptone and agar, stir, put into fermentation
In tank, add the bog moss of squeezeding juice quality 4～6%, design temperature is 24～32 DEG C, with 120r/min stirring fermentation 32～
35h；
(2) after above-mentioned fermentation ends, the fermenting mixture in fermentation tank is put in centrifuge, with 5000r/min centrifugation point
From 8～12min, collect supernatant, use quality fraction is that 10% sodium hydroxide solution adjusts pH to 7.5～8.0, obtains microorganism
Bacterium solution, standby；
(3) press solid-to-liquid ratio 1: 3, take new fresh bamboo tube and mass fraction to put in water-bath for 25% hydrogen peroxide solution, design temperature
95～100 DEG C, it is incubated 1～2h, subsequently filters, then thick bamboo tube is put in carbide furnace, protected using nitrogen, in 400～500 DEG C of carbon
After changing 1～2h, carbide taking-up is put in grinding mill and is ground, cross 50 mesh sieves, collect the particle that sieves, obtain microbe granular
Carrier；
(4) press solid-to-liquid ratio 1: 2～4, take mentioned microorganism particulate vector and standby microbial inoculum to stir, at 28～34 DEG C
Standing 3～5h, subsequent freeze-drying, collect dried object, you can obtain microbe granular.
3. the curing agent of heavy metal Zn and its using method in a kind of stable soil according to claim 1, its feature exists
In：In described stable soil, the using method of the curing agent of heavy metal Zn is：In the ratio setting, first by vermiculite, wooden
Plain sulfoacid calcium and plant ash are put in grinding mill and are ground, and cross 50 mesh sieves, collect the particle that sieves, mixing all with microbe granular
Even, obtain the curing agent of heavy metal Zn in stable soil, by it with the soil containing heavy metal Zn, in mass ratio 1: 13～20, mix
Close uniformly, obtain compound, then the water with mixture quality 50～54%, mix, standing shaping, complete to solidify, you can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610726060.0A CN106398705A (en) | 2016-08-19 | 2016-08-19 | Solidifying agent for stabilizing heavy metal Zn in soil and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610726060.0A CN106398705A (en) | 2016-08-19 | 2016-08-19 | Solidifying agent for stabilizing heavy metal Zn in soil and using method thereof |
Publications (1)
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| CN106398705A true CN106398705A (en) | 2017-02-15 |
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ID=58004440
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787734A (en) * | 2018-05-25 | 2018-11-13 | 四川川能环保科技有限公司 | A kind of method of curing agent and microbial association restoration of soil polluted by heavy metal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104531158A (en) * | 2014-12-09 | 2015-04-22 | 孟涛 | Curing agent and curing method thereof |
| CN104996025A (en) * | 2015-06-14 | 2015-10-28 | 六安市裕南春蔬果种植专业合作社 | Soil improving method |
| CN105199738A (en) * | 2015-09-23 | 2015-12-30 | 江苏富邦环境发展有限公司 | Solidifying agent for heavy metal contaminated soil and using method thereof |
-
2016
- 2016-08-19 CN CN201610726060.0A patent/CN106398705A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104531158A (en) * | 2014-12-09 | 2015-04-22 | 孟涛 | Curing agent and curing method thereof |
| CN104996025A (en) * | 2015-06-14 | 2015-10-28 | 六安市裕南春蔬果种植专业合作社 | Soil improving method |
| CN105199738A (en) * | 2015-09-23 | 2015-12-30 | 江苏富邦环境发展有限公司 | Solidifying agent for heavy metal contaminated soil and using method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787734A (en) * | 2018-05-25 | 2018-11-13 | 四川川能环保科技有限公司 | A kind of method of curing agent and microbial association restoration of soil polluted by heavy metal |
| CN108787734B (en) * | 2018-05-25 | 2020-09-01 | 四川川能环保科技有限公司 | Method for repairing heavy metal contaminated soil by combining curing agent and microorganisms |
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