CN105344706A - Curing agent for lead-contaminated soil remediation and remediation method - Google Patents
Curing agent for lead-contaminated soil remediation and remediation method Download PDFInfo
- Publication number
- CN105344706A CN105344706A CN201510933830.4A CN201510933830A CN105344706A CN 105344706 A CN105344706 A CN 105344706A CN 201510933830 A CN201510933830 A CN 201510933830A CN 105344706 A CN105344706 A CN 105344706A
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- curing agent
- lead
- contaminated soil
- soil
- cement
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Classifications
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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
Abstract
The invention discloses a curing agent for lead-contaminated soil remediation and a remediation method. The curing agent comprises components in parts by mass as follows: 3-5 parts of cement, 1-2 parts of quick lime and 1-2 parts of monosodium phosphate. The curing agent has stable and durable curing function and excellent curing effect. According to the lead-contaminated soil remediation method by using the curing agent, the operation is simple; the cost is low; the content of lead in the remediated soil is lower than the national standard; and popularization and application are facilitated.
Description
Technical field
The present invention relates to soil remediation field, be specifically related to a kind of curing agent for lead-contaminated soil reparation and restorative procedure.
Background technology
Along with the fast development of China's industrial or agricultural, heavy metal pollution of soil has become people and has paid close attention to object.Wherein lead-contaminated soil is comparatively serious, and leaded soil not only affects edaphon, enzymatic activity and physicochemical property, and meeting secondary pollution surface water and groundwater, and healthy by food chain harm humans.The main cause of Lead Pollution in Soil is caused to be summed up as fire coal, industrial lead and vehicle exhaust etc.
The restorative procedure of lead-contaminated soil mainly contains solidification stabilization method, phytoremediation and chemical extraction etc.
Wherein phytoremediation is generally acknowledged ideal original position soil Treatment process, but there is obvious shortcoming: often plant is short and small, biomass is lower, the speed of growth is slow for over-accumulated plant, growth cycle is long; Phytoremediation is subject to the restriction of the environmental conditions such as soil types, temperature, humidity and nutrition.Soil extraction process include extract to soil surface diffusion, to the dissolving of polluter, the pollutant that extracts at soil diffusion inside, the pollutant that extracts from soil surface to processes such as fluid diffusions.But often containing a large amount of heavy metal in chemical extraction liquid, if process and direct discharge can cause secondary pollution.Solidification stabilization method, mainly to reduce its content or to make the strategy of its passivation improve soil physico-chemical property to reach, finally for the purpose of the normal function recovering soil ecology.The key of the method selects cost-effective curing agent, by adding curing agent, then produces the series reaction such as precipitation, absorption, ion-exchange, humification, redox, the biological effectiveness of reduction heavy metal ion in soil environment and animal migration.
But current solidification stabilization method is applicable to pollution level and not serious soil, and rehabilitation cost is lower, has certain application space.And this restorative procedure thoroughly cannot eradicate the lead element of upper soll layer, repairing effect has certain temporary.
Summary of the invention
[technical problem that will solve]
The object of the invention is the problem solving above-mentioned prior art, a kind of curing agent for lead-contaminated soil reparation and restorative procedure are provided.The method can the heavy metal lead of effective stable curing contaminated soil, and the soil through repairing, meet " household refuse landfill sites Environmental capacity standard ", household refuse landfill sites landfill disposal can be sent into.
[technical scheme]
In order to reach above-mentioned technique effect, the present invention takes following technical scheme:
For the curing agent that lead-contaminated soil is repaired, it is made up of the material of following mass parts: cement 3 ~ 5 parts, quick lime 1 ~ 2 part, sodium dihydrogen phosphate 1 ~ 2 part.
According to the present invention's further technical scheme, described cement is selected from portland cement or aluminate cement.
Carry out a restorative procedure for lead-contaminated soil with curing agent described above, it comprises the following steps:
A, the process of lead-contaminated soil
First, by needing the lead-contaminated soil repaired to excavate, the special place of soil remediation is transferred to;
B, the preparation of curing agent
Cement and the above-mentioned mass parts of quick lime are mixed, obtains curing agent pulvis;
Take the sodium dihydrogen phosphate of above-mentioned mass parts, the ratio being then 1:1.5 ~ 3 with solid-liquid mass ratio adds water, is stirred to sodium dihydrogen phosphate and dissolves completely, obtains curing agent liquor, and described curing agent liquor is now with the current;
C, solidification is repaired
Be 3 ~ 12:90 ~ 110 by the gross mass of cement, quick lime and sodium dihydrogen phosphate and the mass ratio of lead-contaminated soil, first after the curing agent pulvis that step B prepares being mixed with lead-contaminated soil, progressively add the curing agent liquor of step B preparation again, add in the process of curing agent liquor and constantly mix, make it fully mix with soil; Then add a certain amount of water, after 5 ~ 7 days, reparation completes; Finally the lead-contaminated soil after reparation is carried out security landfill.
According to the present invention's further technical scheme, in step, described excavation refers to that the degree of depth excavating soil is 30 ~ 40cm.
According to the present invention's further technical scheme, in stepb, during preparation curing agent liquor, described sodium dihydrogen phosphate amount of water is solid-liquid mass ratio 1:2.
According to the present invention's further technical scheme, in step C, before described lead-contaminated soil mixes with curing agent pulvis, fragmentation, screening and mixing need be carried out.
According to the present invention's further technical scheme, in step C, the gross mass of described cement, quick lime and sodium dihydrogen phosphate and the mass ratio of lead-contaminated soil are 5 ~ 9:100.
According to the present invention's further technical scheme, in step C, described a certain amount of water refers to that adding water makes the moisture content of soil reach 30 ~ 40%.
The present invention will be explained below.
In the curing agent that the present invention uses, cement and quick lime are separately conventional curing agent.Wherein the solidification of cement is that the plumbous heavy metal that waits generates the hydrated product such as hydrated calcium silicate, drated calcium aluminate by the technology such as chemical absorbing, absorption, ion-exchange, sedimentation, encapsulating and cement generation hydration reaction, finally be fixed on hydrolysis product of cement with the form of hydroxide or complex compound, add the pH that cement can improve soil simultaneously, make heavy metal be converted into the lower hydroxide of solubility or carbonate precipitation, thus inhibit leaching and the migration of heavy metal.Quick lime is a kind of on-hydraulic Binder Materials of alkalescence, it on the impact of heavy metal in soil be increase soil pH, promote heavy metal Formed hydrochlorate, silicate, precipitation of hydroxide.Adding phosphate compound in soil can make soil particle surface negative charge increase thus strengthen the suction-operated of metal cation, too increase the absorption to lead ion simultaneously, in addition, also can cause heavy metal ion directly and phosphorus-containing compound generation ion-exchange phosphatic adding.Phosphorus and the phosphorus lead ore compounds that lead easy build environment stability is higher, solubility is less.
The application, by rational proportion cement, quick lime and sodium dihydrogen phosphate, by the synergy of three kinds of curing agent, makes three kinds of curing agent cooperatively interact, well achieves the cooperation solidification of three kinds of curing agent.By by broken for lead-contaminated soil, screening and mixing, lead contamination in good homogenising soil, then after mixing with cement, quick lime, add sodium dihydrogen phosphate, can ensure that curing agent better mixes with soil, phosphate has good dissolubility simultaneously, increases phosphatic reaction speed and reaction Chengdu.Because cement and quick lime add fashionable not moisture content, so only play the effect mixed do not solidify stable reaction.When three kinds of curing agent add completely, then add water and reach 30 ~ 40% to moisture content, coordinative role while can ensureing three kinds of curing agent, the addition of water is too much unsuitable, is unfavorable for the solidification of cement and quick lime thus affects the effect of integrally curing agent.In addition, the cement used in the application is industrial Zones With Common Portland Cement, and quick lime is the conventional quick lime of industry, and with low cost, material purity etc. are less demanding.
Because the lead great majority in soil rest on topsoil, and have chronicity, the degree of depth with soil increases and acutely lowers, and passes pollution depth in time and deepens.Therefore the degree of depth of the application's excavation is 30 ~ 40cm, and the content of its lead is comparatively large, pollutes comparatively serious.When preparing sodium dihydrogen phosphate, when adding the water-soluble solution of 2 times of quality, when solution is colourless transparent solution for dissolve completely.Repair 5 ~ 7 days, the lead in soil loses biological effectiveness, and the soil after this reparation meets " household refuse landfill sites Environmental capacity standard ", thus realizes the reparation of soil.
[beneficial effect]
The present invention compared with prior art, has following beneficial effect:
Curing agent provided by the invention has stable, lasting solidification, and solidification effect is good.
Restorative procedure of the present invention can effectively reduce the lead in contaminated soil, realizes the repairing and treating to lead-contaminated soil, and Adjustment effect is good, simple to operate, with low cost, and the content of the Lead In Soil after reparation, lower than national standard, is applicable to applying.
Detailed description of the invention
Below in conjunction with embodiments of the invention, the invention will be further elaborated.
The curing agent that following embodiment uses is made up of the material of following mass parts: cement 3 ~ 5 parts, quick lime 1 ~ 2 part, sodium dihydrogen phosphate 1 ~ 2 part.
Embodiment 1:
A restorative procedure for lead-contaminated soil, it comprises the following steps:
A, the process of lead-contaminated soil
First, will the lead-contaminated soil repaired be needed to excavate, cutting depth be 35cm, soil is transferred to the special place of soil remediation;
B, the preparation of curing agent
3 parts of portland cements and 1 part of quick lime are mixed, obtains curing agent pulvis;
Take the sodium dihydrogen phosphate of 1 part, the ratio being then 1:2 with solid-liquid mass ratio adds water, is stirred to sodium dihydrogen phosphate and dissolves completely, obtains curing agent liquor, and described curing agent liquor is now with the current;
C, solidification is repaired
First after being mixed with 100 parts of lead-contaminated soils by the curing agent pulvis that step B prepares, more progressively add the curing agent liquor of step B preparation, add in the process of curing agent liquor and constantly mix, make it fully mix with soil; Then add water and reach 30 ~ 40% to moisture content, after 5 days, reparation completes; Finally the lead-contaminated soil after reparation is carried out security landfill.
Embodiment 2:
A restorative procedure for lead-contaminated soil, it comprises the following steps:
A, the process of lead-contaminated soil
First, will the lead-contaminated soil repaired be needed to excavate, cutting depth be 30cm, soil is transferred to the special place of soil remediation;
B, the preparation of curing agent
3 parts of portland cements and 2 parts of quick limes are mixed, obtains curing agent pulvis;
Take the sodium dihydrogen phosphate of 1.5 parts, the ratio being then 1:2 with solid-liquid mass ratio adds water, is stirred to sodium dihydrogen phosphate and dissolves completely, obtains curing agent liquor, and described curing agent liquor is now with the current;
C, solidification is repaired
First after being mixed with 100 parts of lead-contaminated soils by the curing agent pulvis that step B prepares, more progressively add the curing agent liquor of step B preparation, add in the process of curing agent liquor and constantly mix, make it fully mix with soil; Then add water and reach 30 ~ 40% to moisture content, after 5 days, reparation completes; Finally the lead-contaminated soil after reparation is carried out security landfill.
Embodiment 3:
A restorative procedure for lead-contaminated soil, it comprises the following steps:
A, the process of lead-contaminated soil
First, will the lead-contaminated soil repaired be needed to excavate, cutting depth be 40cm, soil is transferred to the special place of soil remediation;
B, the preparation of curing agent
5 parts of portland cements and 2 parts of quick limes are mixed, obtains curing agent pulvis;
Take the sodium dihydrogen phosphate of 2 parts, the ratio being then 1:2 with solid-liquid mass ratio adds water, is stirred to sodium dihydrogen phosphate and dissolves completely, obtains curing agent liquor, and described curing agent liquor is now with the current;
C, solidification is repaired
First after being mixed with 100 parts of lead-contaminated soils by the curing agent pulvis that step B prepares, more progressively add the curing agent liquor of step B preparation, add in the process of curing agent liquor and constantly mix, make it fully mix with soil; Then add water and reach 30 ~ 40% to moisture content, after 5 days, reparation completes; Finally the lead-contaminated soil after reparation is carried out security landfill.
Wherein, the plumbous leaching concentration of the lead-contaminated soil of embodiment 1 ~ 3 is as shown in table 1:
The lead content of the lead-contaminated soil of table 1 embodiment 1 ~ 3
After repair process, the lead content of lead-contaminated soil is as shown in table 2:
Lead content after the lead-contaminated soil reparation of table 2 embodiment 1 ~ 3
Above-mentioned experimental result shows, curing agent of the present invention obviously can reduce the heavy plumbous content of heavy metal pollution, concentration plumbous in embodiment is all lower than national standard limit value, so the present invention can reduce leaching concentration plumbous in contaminated soil fast and efficiently, can be used for the improvement reparation of heavy metal lead pollution soil.
Embodiment 4:
A restorative procedure for lead-contaminated soil, it comprises the following steps:
A, the process of lead-contaminated soil
First, will the lead-contaminated soil repaired be needed to excavate, cutting depth be 40cm, soil is transferred to the special place of soil remediation;
B, the preparation of curing agent
3 parts of aluminate cements and 1 part of quick lime are mixed, obtains curing agent pulvis;
Take the sodium dihydrogen phosphate of 1 part, the ratio being then 1:2 with solid-liquid mass ratio adds water, is stirred to sodium dihydrogen phosphate and dissolves completely, obtains curing agent liquor, and described curing agent liquor is now with the current;
C, solidification is repaired
First after being mixed with 100 parts of lead-contaminated soils by the curing agent pulvis that step B prepares, more progressively add the curing agent liquor of step B preparation, add in the process of curing agent liquor and constantly mix, make it fully mix with soil; Then add water and reach 30 ~ 40% to moisture content, after 5 days, reparation completes; Finally the lead-contaminated soil after reparation is carried out security landfill.
In sum, curing agent of the present invention and the restorative procedure that utilizes this curing agent to carry out thereof have good repair.And restorative procedure of the present invention is simple to operate, with low cost, be suitable for applying.
Although with reference to explanatory embodiment of the present invention, invention has been described here, above-described embodiment is only the present invention's preferably embodiment, embodiments of the present invention are not restricted to the described embodiments, should be appreciated that, those skilled in the art can design a lot of other amendment and embodiment, these amendments and embodiment will drop within spirit disclosed in the present application and spirit.
Claims (8)
1., for the curing agent that lead-contaminated soil is repaired, it is characterized in that it is made up of the material of following mass parts: cement 3 ~ 5 parts, quick lime 1 ~ 2 part, sodium dihydrogen phosphate 1 ~ 2 part.
2. the curing agent repaired for lead-contaminated soil according to claim 1, is characterized in that described cement is selected from portland cement or aluminate cement.
3. carry out a restorative procedure for lead-contaminated soil with the curing agent described in claim 1 or 2, it is characterized in that it comprises the following steps:
A, the process of lead-contaminated soil
First, by needing the lead-contaminated soil repaired to excavate, the special place of soil remediation is transferred to;
B, the preparation of curing agent
Cement and quick lime are mixed by mass parts according to claim 1, obtains curing agent pulvis;
Take the sodium dihydrogen phosphate of mass parts as claimed in claim 1, the ratio being then 1:1.5 ~ 3 with solid-liquid mass ratio adds water, is stirred to sodium dihydrogen phosphate and dissolves completely, obtains curing agent liquor, and described curing agent liquor is now with the current;
C, solidification is repaired
Be 3 ~ 12:90 ~ 110 by the gross mass of cement, quick lime and sodium dihydrogen phosphate and the mass ratio of lead-contaminated soil, first after the curing agent pulvis that step B prepares being mixed with lead-contaminated soil, progressively add the curing agent liquor of step B preparation again, add in the process of curing agent liquor and constantly mix, make it fully mix with soil; Then add a certain amount of water, after 5 ~ 7 days, reparation completes; Finally the lead-contaminated soil after reparation is carried out security landfill.
4. restorative procedure according to claim 4, is characterized in that in step, and described excavation refers to that the degree of depth excavating soil is 30 ~ 40cm.
5. restorative procedure according to claim 4, is characterized in that in stepb, and during preparation curing agent liquor, the amount of water of described sodium dihydrogen phosphate is solid-liquid mass ratio 1:2.
6. restorative procedure according to claim 4, is characterized in that in step C, before described lead-contaminated soil mixes with curing agent pulvis, need carry out fragmentation, screening and mixing.
7. restorative procedure according to claim 4, is characterized in that in step C, and the gross mass of described cement, quick lime and sodium dihydrogen phosphate and the mass ratio of lead-contaminated soil are 5 ~ 9:100.
8. restorative procedure according to claim 4, is characterized in that in step C, and described a certain amount of water refers to that adding water makes the moisture content of soil reach 30 ~ 40%.
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| CN201510933830.4A CN105344706B (en) | 2015-12-15 | 2015-12-15 | For the curing agent and restorative procedure of lead-contaminated soil reparation |
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| CN105344706B CN105344706B (en) | 2018-05-18 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106376256A (en) * | 2016-10-18 | 2017-02-08 | 芜湖仓实农业装备制造有限公司 | Rotary cultivator with function of removing soil heavy metal |
| CN106424123A (en) * | 2016-12-06 | 2017-02-22 | 重庆理工大学 | Remediation composition and remediation method for lead-polluted soil |
| CN106701088A (en) * | 2016-11-18 | 2017-05-24 | 东莞中科土壤科技开发有限公司 | Composite curing agent for restoring soil polluted by heavy metals and application method thereof |
| CN109013675A (en) * | 2018-06-26 | 2018-12-18 | 北京高能时代环境技术股份有限公司 | A method of it repairs containing lead-contaminated soil |
| CN109054847A (en) * | 2018-06-28 | 2018-12-21 | 北京建工环境修复股份有限公司 | A kind of engineer application method of lead-contaminated soil reparation medicament and the medicament |
| CN111100653A (en) * | 2018-10-26 | 2020-05-05 | 南京化学工业园环保产业协同创新有限公司 | Novel curing agent for heavy metal contaminated soil and use method thereof |
| CN111875339A (en) * | 2020-07-01 | 2020-11-03 | 吉安创成环保科技有限责任公司 | Curing agent for high-pH solid waste and treatment method |
| CN114525137A (en) * | 2021-12-27 | 2022-05-24 | 重庆中天海智生态环境科技有限公司 | Heavy metal lead polluted soil stabilizer and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040018130A1 (en) * | 2002-07-23 | 2004-01-29 | Forrester Keith Edward | Method for wet stabilization of material or waste to reduce selenium leaching potential |
| JP4233923B2 (en) * | 2003-04-18 | 2009-03-04 | 株式会社テルナイト | Treatment agent for heavy metal contaminated soil and soil treatment method using the same |
| CN101962553A (en) * | 2010-09-21 | 2011-02-02 | 同济大学 | Curing agent for restoring heavy metal contaminated soil |
| CN102766465A (en) * | 2012-07-31 | 2012-11-07 | 湖南永清环境修复有限公司 | Ion mineralization stabilizer for treating soil with heavy metal pollution and application method thereof |
| CN103833274A (en) * | 2013-12-31 | 2014-06-04 | 中国科学院武汉岩土力学研究所 | Heavy metal-contaminated soil solidifying agent and application method thereof |
| CN104059673A (en) * | 2014-06-25 | 2014-09-24 | 湖南新九方科技有限公司 | Combined stable mineralization restoration agent for treating heavy-metal polluted soil and application method thereof |
| CN104070059A (en) * | 2014-06-06 | 2014-10-01 | 浙江省环境保护科学设计研究院 | Elution stabilization reparation method for treating lead polluted soil |
| CN104418560A (en) * | 2013-08-20 | 2015-03-18 | 深圳市铁汉生态环境股份有限公司 | Curing agent for treating heavy metal pollution and heavy metal curing method |
| CN104927871A (en) * | 2015-07-14 | 2015-09-23 | 湖南大学 | Heavy metal stabilizer and method for stabilizing soil heavy metal through same |
-
2015
- 2015-12-15 CN CN201510933830.4A patent/CN105344706B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040018130A1 (en) * | 2002-07-23 | 2004-01-29 | Forrester Keith Edward | Method for wet stabilization of material or waste to reduce selenium leaching potential |
| JP4233923B2 (en) * | 2003-04-18 | 2009-03-04 | 株式会社テルナイト | Treatment agent for heavy metal contaminated soil and soil treatment method using the same |
| CN101962553A (en) * | 2010-09-21 | 2011-02-02 | 同济大学 | Curing agent for restoring heavy metal contaminated soil |
| CN102766465A (en) * | 2012-07-31 | 2012-11-07 | 湖南永清环境修复有限公司 | Ion mineralization stabilizer for treating soil with heavy metal pollution and application method thereof |
| CN104418560A (en) * | 2013-08-20 | 2015-03-18 | 深圳市铁汉生态环境股份有限公司 | Curing agent for treating heavy metal pollution and heavy metal curing method |
| CN103833274A (en) * | 2013-12-31 | 2014-06-04 | 中国科学院武汉岩土力学研究所 | Heavy metal-contaminated soil solidifying agent and application method thereof |
| CN104070059A (en) * | 2014-06-06 | 2014-10-01 | 浙江省环境保护科学设计研究院 | Elution stabilization reparation method for treating lead polluted soil |
| CN104059673A (en) * | 2014-06-25 | 2014-09-24 | 湖南新九方科技有限公司 | Combined stable mineralization restoration agent for treating heavy-metal polluted soil and application method thereof |
| CN104927871A (en) * | 2015-07-14 | 2015-09-23 | 湖南大学 | Heavy metal stabilizer and method for stabilizing soil heavy metal through same |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106376256A (en) * | 2016-10-18 | 2017-02-08 | 芜湖仓实农业装备制造有限公司 | Rotary cultivator with function of removing soil heavy metal |
| CN106701088A (en) * | 2016-11-18 | 2017-05-24 | 东莞中科土壤科技开发有限公司 | Composite curing agent for restoring soil polluted by heavy metals and application method thereof |
| CN106424123A (en) * | 2016-12-06 | 2017-02-22 | 重庆理工大学 | Remediation composition and remediation method for lead-polluted soil |
| CN106424123B (en) * | 2016-12-06 | 2019-07-30 | 重庆理工大学 | Remediation composition and restorative procedure for lead-contaminated soil |
| CN109013675A (en) * | 2018-06-26 | 2018-12-18 | 北京高能时代环境技术股份有限公司 | A method of it repairs containing lead-contaminated soil |
| CN109054847A (en) * | 2018-06-28 | 2018-12-21 | 北京建工环境修复股份有限公司 | A kind of engineer application method of lead-contaminated soil reparation medicament and the medicament |
| CN109054847B (en) * | 2018-06-28 | 2021-02-05 | 北京建工环境修复股份有限公司 | Lead-polluted soil remediation agent and engineering application method of agent |
| CN111100653A (en) * | 2018-10-26 | 2020-05-05 | 南京化学工业园环保产业协同创新有限公司 | Novel curing agent for heavy metal contaminated soil and use method thereof |
| CN111875339A (en) * | 2020-07-01 | 2020-11-03 | 吉安创成环保科技有限责任公司 | Curing agent for high-pH solid waste and treatment method |
| CN111875339B (en) * | 2020-07-01 | 2021-11-05 | 吉安创成环保科技有限责任公司 | Curing agent for high-pH solid waste and treatment method |
| CN114525137A (en) * | 2021-12-27 | 2022-05-24 | 重庆中天海智生态环境科技有限公司 | Heavy metal lead polluted soil stabilizer and preparation method thereof |
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