CN105482823A - Restoration drug of high concentration lead-polluted soil and use method thereof - Google Patents
Restoration drug of high concentration lead-polluted soil and use method thereof Download PDFInfo
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- CN105482823A CN105482823A CN201510848147.0A CN201510848147A CN105482823A CN 105482823 A CN105482823 A CN 105482823A CN 201510848147 A CN201510848147 A CN 201510848147A CN 105482823 A CN105482823 A CN 105482823A
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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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
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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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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of environmental protection and especially relates to a restoration drug of high concentration lead-polluted soil and a use method thereof. The restoration drug is prepared from 5-35% by mass of a sulfur-based compound, 15-45% by mass of a phosphor-based compound and 35-75% by mass of a mineral material. The sulfur-based compound, the phosphor-based compound and the mineral material have granularity less than 200 meshes. The restoration drug has the advantages of wide raw material sources, simple preparation processes, operation and use convenience, high efficiency and good treatment effects.
Description
Technical field
The present invention relates to environmental technology field, particularly relate to a kind of reparation medicament for high-concentration lead contaminated soil and using method.
Background technology
Along with the development of industrial or agricultural and the widely application of leaded chemical substance, plumbous in the processes such as exploitation of mineral resources, plating metallurgy, refuse process disposal, a large amount of land pollutant that contains enters edatope, causes Lead In Soil contamination phenomenon ubiquity in world wide.The plumbous harm to human health is very large, can work the mischief to a system such as neural, cardiovascular and internal secretion, even threat to life.Therefore the improvement of lead pollution of soil and reparation receive increasing concern.At present, lead pollution of soil recovery technique mainly comprises following several:
1, engineering repairing method: engineering repairing method mainly contains soil moved in improve the original method, soil replacement method and method of digging.Soil moved in improve the original method is in contaminated soil, add a large amount of clean soils, covers top layer or mixing, and Pollutant levels are reduced.Soil replacement method is taken contaminated soil away exactly, changes away new clean soil.Method of digging adopts the mode of deep ploughing to make the pollutent being gathered in top layer be distributed to deep layer, reaches dilution and the object from process.Engineering measure ruling by law reason lead pollution of soil has thorough, stable feature.Its weak point: quantities is large, investment cost is high, destroy soil structures, cause soil fertility to decline.
2, physical chemistry repairing method: physical chemistry repairing method mainly contains soil washing, Vitrification, electrochemical process etc.Soil washing utilizes eluent drip washing contaminated soil, makes the lead in solid phase of soil transfer in liquid phase of soil, reduces pollutent toxicity; Vitrification uses electrically heated at the scene, melted by contaminated soil, forms stiff glass body technique that is chemically inert, non-diffusing after cooling; Electrochemical process is that the electrokinetic effects utilizing extra electric field to produce drive the lead of the pollutent in soil surely to move along direction of an electric field, and the pollutent lead of enrichment can be focused in electrode district or be separated.Lead in the clayed soil not high for perviousness, conductivity is poor, according to electric current can destroy Qian ?the principle of soil key, can Applied Electrochemistry method but remove.But the weak point that this method exists: rehabilitation cost is high, energy consumption exists secondary pollution more greatly, even.
3, phytoremediation: phytoremediation is the soil and water that certain kind of plant of utilization plantation purifies by Lead contamination.Phytoremediation can be divided into plant extraction by its mechanism of repairing and process, plant is fixed, phytovolatilization, root system filter, plant degradation.Wherein, plant extraction refers to and utilizes root system of plant absorb soil contaminant and deliver to plant shoot, is reached a kind of method removing pollutant in soil by harvesting overground part material.The weak point of this method: the cycle of administering is very long, the later stage plant collect, treatment process is comparatively complicated, the maintenance management cycle is long.
Pursue not only economy but also the technological method easily promoted, this tallies with the national condition, and stabilization/curing technology meets this requirement, and it carries out physical reaction by unstable state lead in medicament and soil, reaches locking unstable state plumbous, reduces plumbous biological effectiveness.At present, domestic have much for the reparation medicament of middle low concentration lead contaminated soil, and special less for the reparation medicament of high-concentration lead contaminated soil, and addition and price higher.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of reparation medicament for high-concentration lead contaminated soil and using method be provided, its raw material extensively, prepare simple, easy for operation, efficiency is high, regulation effect good.
Object of the present invention is achieved by following technical proposals:
For a reparation medicament for high-concentration lead contaminated soil, described reparation kit is containing following raw material, and the mass percent of each raw material is:
Sulfur-based compound be 5% ?35%;
Phosphorio compound be 15% ?45%;
Mineral material be 35% ?75%;
Wherein, the granularity of sulfur-based compound, phosphorio compound and mineral material is all less than 200 orders.
Wherein, described reparation kit is containing following raw material, and the mass percent of each raw material is preferably:
Sulfur-based compound be 20% ?30%;
Phosphorio compound be 20% ?30%;
Mineral material be 40% ?60%.
As preferred technical scheme of the present invention, described sulfur-based compound is two kinds of a kind of or any mass ratio in sodium sulphite and sodium polysulphide.
As preferred technical scheme of the present invention, described phosphorio compound is the multiple of a kind of or any mass ratio in sodium phosphate, Sodium phosphate dibasic and sodium polyphosphate.
As preferred technical scheme of the present invention, described mineral material is the multiple of a kind of or any mass ratio in wilkinite, diatomite, kaolin, sepiolite and active pozzolans.
Another object of the present invention is to, a kind of using method of the reparation medicament for high-concentration lead contaminated soil is provided, it is characterized in that, comprise the steps: a, detect content plumbous in pending contaminated soil and Leaching; B, according to detected result, by reparation medicament, spreading is on the surface of pending soil equably, and wherein lead pollution of soil is 10 ~ 100:1 with repairing the mass ratio of medicament; C, adopt the mode of stirring of turning over that pending soil is uniformly mixed 3 ?5 times together with the reparation medicament of spreading it on, formation mixed soil; D, to add water to mixed soil, keep the water content of mixed soil to be not less than 30%; E, on mixed soil, cover material which can retain moisture, maintenance at least 3 days; Leaching plumbous in f, sample detecting mixed soil, does not meet environmental requirement if detected, and increases curing time, and adds water according to soil humidity, until detected result meets environmental requirement.
Wherein, described material which can retain moisture is Environment protection mulch film, PVC film or straw bag.
Beneficial effect of the present invention
The present invention takes sulfur-based compound, phosphorio compound and mineral material to be renovation agent, when discharging in soil, wherein sulfur-based compound and phosphorio compound can react with unstable state lead in lead pollution of soil, the compound of lasting stability under formation sour environment, reduce its bio-absorbable validity and Leaching, prevent active lead ion with underground water and surface water migration, avoid active lead ion to the destruction of ecotope; Wherein, mineral material is inorganic porous non-toxic material, has huge specific surface area, when discharging in soil, there is improvement soil texture function, adsorb and hold lower concentrations of active lead ion and compound thereof, prevent it with underground water and surface water migration, cause secondary pollution.
Compared with prior art, improvement medicament of the present invention have raw material extensively, draw materials easily, preparation method is simple, low cost and other advantages, better to high-concentration lead contaminated soil regulation effect; The present invention repairs medicament using method and has the advantages such as simple to operate, speed of application is fast, regulation effect is good.
Embodiment
In order to better explain technical scheme of the present invention, below in conjunction with embodiment, the present invention is further illustrated:
For the reparation medicament of high-concentration lead contaminated soil using method described in a method, comprise with step:
A, the content detecting lead in pending contaminated soil and Leaching; Detection method is known prior art;
B, according to detected result, by reparation medicament, spreading is on the surface of pending soil equably, and wherein lead pollution of soil is 10 ~ 100:1 with repairing the mass ratio of medicament;
C, adopt the mode of stirring of turning over that pending soil is uniformly mixed 3 ?5 times together with the reparation medicament of spreading it on, formation mixed soil; The mode of stirring of turning over is known prior art;
D, to add water to mixed soil, keep the water content of mixed soil to be not less than 30%;
E, on mixed soil, cover material which can retain moisture, maintenance at least 3 days; Allow unstable lead in the reparation medicament in mixed soil and lead pollution of soil react, form the compound of lasting stability under sour environment, reduce its bio-absorbable validity and Leaching; With insoluble chemical combination state lead salt precipitation stabilization; Here material which can retain moisture is Environment protection mulch film, PVC film, straw bag, also can be other known water-keeping materials;
Leaching plumbous in f, sample detecting mixed soil; If detect and do not meet environmental requirement, increase curing time, add water if desired, until detected result meets environmental requirement.Detection method is known prior art.Environmental requirement is the regulation of country about environmental protection.
Embodiment 1
Raw material sodium sulphite, sodium phosphate and wilkinite are ground into granularity and be less than 200 object materials, weigh according to mass ratio: sodium sulphite is 20%, sodium phosphate is 30%, and wilkinite is 50%, then mixes, and namely obtains described reparation medicament.
Embodiment 2
Raw material sodium polysulphide, Sodium phosphate dibasic and diatomite are ground into granularity and be less than 200 object materials, control is weighed according to mass percent: sodium polysulphide 30%, Sodium phosphate dibasic 20%, diatomite are 50%, then mix, and namely obtain described reparation medicament.
Embodiment 3
Raw material sodium sulphite, sodium polysulphide, sodium polyphosphate, Sodium phosphate dibasic, sepiolite and kaolin are ground into granularity and be less than 200 object materials, weigh according to mass ratio: sodium sulphite is 25%, sodium polysulphide 10%, sodium polyphosphate are 10%, Sodium phosphate dibasic 5%, kaolin are 40%, sepiolite 20%, then mix, namely obtain described reparation medicament.
Embodiment 4
Raw material sodium sulphite, sodium polyphosphate, Sodium phosphate dibasic, active pozzolans are ground into granularity and be less than 200 object materials, weigh according to mass ratio: sodium sulphite is 30%, sodium polyphosphate is 10%, Sodium phosphate dibasic 20%, active pozzolans 40%, then mix, namely obtain described reparation medicament.
Embodiment 5
Raw material sodium sulphite, Sodium phosphate dibasic and kaolin are ground into granularity and be less than 200 object materials, weigh according to mass ratio: sodium sulphite is 10%, Sodium phosphate dibasic 15%, kaolin are 75%, then mixes, and namely obtains described reparation medicament.
Embodiment 6
Raw material sodium polysulphide, sodium polyphosphate, sepiolite and kaolin are ground into granularity and be less than 200 object materials, weigh according to mass ratio: sodium polysulphide 30%, sodium polyphosphate are 35%, kaolin is 25%, sepiolite 10%, then mix, namely obtain described reparation medicament.
Embodiment 7
Raw material sodium polysulphide, sodium polyphosphate, sepiolite and kaolin are ground into granularity and be less than 200 object materials, weigh according to mass ratio: sodium polysulphide 5%, sodium polyphosphate are 45%, kaolin is 25%, sepiolite 25%, then mix, namely obtain described reparation medicament.
Repair the using method Laboratory Examples 1 of medicament:
100 kilograms of lead pollution of soil take from ShaoXing,ZheJiang store battery plant area
(1) adopt the heavy metal detection method of regulation in " standard of soil environment quality (GB15618 ?1995) " to measure content plumbous in pedotheque, its maximum detection is containing being 3753mg/kg; Adopt the lixiviate mode of regulation in " solid waste Leaching leaching method sulfonitric method (HJ/T299 ?2007) ", adopt the method for regulation in " the drinking water standard method of inspection (GB/T5750.6 ?2006) " to measure content plumbous in contaminated soil leach liquor, plumbous Leaching detected result is 23.15mg/L.
(2) according to above-mentioned detected result, the reparation medicament 6 kilograms provided in the dispensing embodiment 1 of medicament " repair ", by reparation medicament equably spreading on the surface of the pending soil of 100 kilograms;
(3) adopt the mode stirred that pending soil is uniformly mixed into mixed soil together with the reparation medicament of spreading it on, stir 3 times, formation mixed soil; By the mode of adding water, the water content of mixed soil is kept to be not less than 30%;
(4) material which can retain moisture covered on mixed soil is straw bag, curing time 3 days, the water content of mixed soil is kept to be not less than 30%, allow and be blended in unstable state lead in reparation medicament in soil and lead pollution of soil and react, with insoluble chemical combination state lead salt precipitation, form the mineral compound of acid lower lasting stability, reduce unstable state lead content in soil;
(5) maintenance 3 days post-samplings detect, and the Leaching detected result processing anti-Lead In Soil is 0.054mg/L, meet the requirement of IV class water concentration limit value in " groundwater quality standard (GB/T14848 ?93) ".
Repair the using method Laboratory Examples 2 of medicament
100 kilograms of lead pollution of soil take from Chengdu, Sichuan store battery plant area
(1) adopt the heavy metal detection method of regulation in " standard of soil environment quality (GB15618 ?1995) " to measure content plumbous in pedotheque, its maximum detection is containing being 6455mg/kg; Adopt the lixiviate mode of regulation in " solid waste Leaching leaching method sulfonitric method (HJ/T299 ?2007) ", adopt the method for regulation in " the drinking water standard method of inspection (GB/T5750.6 ?2006) " to measure content plumbous in contaminated soil leach liquor, plumbous Leaching detected result is 35.27mg/L.
(2) according to above-mentioned detected result, the reparation medicament 10 kilograms provided in the dispensing embodiment 2 of medicament " repair ", by reparation medicament equably spreading on the surface of 100 kilograms of pending soil;
(3) adopt the mode stirred that pending soil is uniformly mixed into mixed soil together with the reparation medicament of spreading it on, stir 5 times, formation mixed soil; By the mode of adding water, the water content of mixed soil is kept to be not less than 30%;
(4) material which can retain moisture covered on mixed soil is PVC film, curing time 3 days, the water content of mixed soil is kept to be not less than 30%, allow and be blended in unstable state lead in reparation medicament in soil and lead pollution of soil and react, with insoluble chemical combination state lead salt precipitation, form the mineral compound of lasting stability, reduce unstable state lead content in soil;
(5) maintenance 3 days post-samplings detect, and the Leaching detected result processing anti-Lead In Soil is 0.071mg/L, meet the requirement of IV class water concentration limit value in " groundwater quality standard (GB/T14848 ?93) ".
Comparative example 8
Raw material sulphuric acid sodium, phosphoric acid, sepiolite and kaolin are ground into granularity and be less than 200 object materials, weigh according to mass ratio: sodium sulfate 25%, phosphoric acid 20%, kaolin are 30%, sepiolite 25%, then mix, namely obtain described reparation medicament.
100 kilograms of lead pollution of soil take from Chengdu, Sichuan store battery plant area
(1) adopt the heavy metal detection method of regulation in " standard of soil environment quality (GB15618 ?1995) " to measure content plumbous in pedotheque, its maximum detection is containing being 6455mg/kg; Adopt the lixiviate mode of regulation in " solid waste Leaching leaching method sulfonitric method (HJ/T299 ?2007) ", adopt the method for regulation in " the drinking water standard method of inspection (GB/T5750.6 ?2006) " to measure content plumbous in contaminated soil leach liquor, plumbous Leaching detected result is 35.27mg/L.
(2) according to above-mentioned detected result, the reparation medicament 50 kilograms provided in the dispensing embodiment 7 of medicament " repair ", by reparation medicament equably spreading on the surface of 500 kilograms of pending soil;
(3) adopt the mode stirred that pending soil is uniformly mixed into mixed soil together with the reparation medicament of spreading it on, stir 4 times, formation mixed soil; By the mode of adding water, the water content of mixed soil is kept to be not less than 30%;
(4) material which can retain moisture covered on mixed soil is Environment protection mulch film, curing time 3 days, the water content of mixed soil is kept to be not less than 30%, unstable state lead in the reparation medicament in mixed soil and lead pollution of soil is allowed to react, with insoluble chemical combination state lead salt precipitation, form the mineral compound of lasting stability, reduce unstable state lead content in soil;
(5) maintenance 3 days post-samplings detect, and the Leaching detected result processing anti-Lead In Soil is 41.075mg/L, does not meet the requirement of IV class water concentration limit value in " groundwater quality standard (GB/T14848 ?93) ".
Should be understood that, above-mentioned embodiment of the present invention only for exemplary illustration or explain principle of the present invention, and is not construed as limiting the invention.Therefore, any amendment made when without departing from the spirit and scope of the present invention, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.In addition, claims of the present invention be intended to contain fall into claims scope and border or this scope and border equivalents in whole change and modification.
Claims (7)
1. for a reparation medicament for high-concentration lead contaminated soil, it is characterized in that, described reparation kit is containing following raw material, and the mass percent of each raw material is:
Sulfur-based compound be 5% ?35%;
Phosphorio compound be 15% ?45%;
Mineral material be 35% ?75%;
Wherein, the granularity of sulfur-based compound, phosphorio compound and mineral material is all less than 200 orders.
2. a kind of reparation medicament for high-concentration lead contaminated soil according to claim 1, is characterized in that, described reparation kit is containing following raw material, and the mass percent of each raw material is preferably:
Sulfur-based compound be 20% ?30%;
Phosphorio compound be 20% ?30%;
Mineral material be 40% ?60%.
3. a kind of reparation medicament for high-concentration lead contaminated soil according to claim 1, is characterized in that, described sulfur-based compound is two kinds of a kind of or any mass ratio in sodium sulphite and sodium polysulphide.
4. a kind of reparation medicament for high-concentration lead contaminated soil according to claim 1, is characterized in that, described phosphorio compound is the multiple of a kind of or any mass ratio in sodium phosphate, Sodium phosphate dibasic and sodium polyphosphate.
5. a kind of reparation medicament for high-concentration lead contaminated soil according to claim 1, is characterized in that, described mineral material is the multiple of a kind of or any mass ratio in wilkinite, diatomite, kaolin, sepiolite and active pozzolans.
6. the using method of a kind of reparation medicament for high-concentration lead contaminated soil according to claim 1,2,3,4 or 5, is characterized in that, comprise the steps: a, detects content plumbous in pending contaminated soil and Leaching; B, according to detected result, by reparation medicament, spreading is on the surface of pending soil equably, and wherein lead pollution of soil is 10 ~ 100:1 with repairing the mass ratio of medicament; C, adopt the mode of stirring of turning over that pending soil is uniformly mixed 3 ?5 times together with the reparation medicament of spreading it on, formation mixed soil; D, to add water to mixed soil, keep the water content of mixed soil to be not less than 30%; E, on mixed soil, cover material which can retain moisture, maintenance at least 3 days; Leaching plumbous in f, sample detecting mixed soil, does not meet environmental requirement if detected, and increases curing time, and adds water according to soil humidity, until detected result meets environmental requirement.
7. the using method of a kind of reparation medicament for high-concentration lead contaminated soil according to claim 6, it is characterized in that, described material which can retain moisture is Environment protection mulch film, PVC film or straw bag.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510848147.0A CN105482823A (en) | 2015-11-27 | 2015-11-27 | Restoration drug of high concentration lead-polluted soil and use method thereof |
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| CN201510848147.0A CN105482823A (en) | 2015-11-27 | 2015-11-27 | Restoration drug of high concentration lead-polluted soil and use method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108998033A (en) * | 2018-06-28 | 2018-12-14 | 内蒙古益兴环保工程有限公司 | The renovation agent and its restorative procedure of cadmium, lead combined contamination 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 |
| CN110665959A (en) * | 2019-11-11 | 2020-01-10 | 佛山科学技术学院 | A kind of bare soil ecological restoration method |
| CN110791292A (en) * | 2019-05-13 | 2020-02-14 | 湘潭海泡石科技有限公司 | Repairing agent suitable for lead-polluted soil and preparation method thereof |
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| CN104845626A (en) * | 2015-05-05 | 2015-08-19 | 长沙华时捷环保科技发展有限公司 | Passivating agent for governing heavy metal contaminated soil and preparation and use method of passivating agent |
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| 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 |
| CN104312591A (en) * | 2014-10-13 | 2015-01-28 | 贵州美瑞特环保科技有限公司 | Stabilized curing agent for heavy metal contaminated soil or solid waste treatment and treatment method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108998033A (en) * | 2018-06-28 | 2018-12-14 | 内蒙古益兴环保工程有限公司 | The renovation agent and its restorative procedure of cadmium, lead combined contamination 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 |
| CN110791292A (en) * | 2019-05-13 | 2020-02-14 | 湘潭海泡石科技有限公司 | Repairing agent suitable for lead-polluted soil and preparation method thereof |
| CN110665959A (en) * | 2019-11-11 | 2020-01-10 | 佛山科学技术学院 | A kind of bare soil ecological restoration method |
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