CN105583223B - A kind of combined contamination soil renovation agent and application - Google Patents
A kind of combined contamination soil renovation agent and application Download PDFInfo
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- CN105583223B CN105583223B CN201610079842.XA CN201610079842A CN105583223B CN 105583223 B CN105583223 B CN 105583223B CN 201610079842 A CN201610079842 A CN 201610079842A CN 105583223 B CN105583223 B CN 105583223B
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- soil
- combined contamination
- cyclodextrin
- diatomite
- renovation agent
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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
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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
- C09K2101/00—Agricultural use
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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
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
Abstract
The present invention provides a kind of combined contamination soil renovation agent, which consists of the following compositions by weight：Biomass carbon 30 50%, calcium hydroxy phosphate 10 20%, humic acid potassium 10 20%, α cyclodextrin 10 20%, diatomite 5 10%, plant ash 5 10%；Said components give full play to synergistic effect, by chelating, precipitation, absorption, improvement, adjust the effects that pH value, so that the available heavy metal content in soil substantially reduces, soil-repairing agent is prepared, and there is good effect, reparation medicament of the invention to have the advantages that preparation method is simple, feasible, regulation effect is good when repairing cadmium lead arsenic combined contamination soil.
Description
Technical field：
The present invention relates to soil pollution recovery technique fields, and in particular to a kind of combined contamination soil renovation agent and application.
Technical background：
Heavy metal pollution of soil is gradually at the focal issue of public concern.
It is announced within 2014 according to Environmental Protection Department and Ministry of Land and Resources《National Soil Pollution Investigation bulletin》Display：The whole nation
Soil environment situation totally allows of no optimist, and some areas soil pollution is heavier, and arable soil environmental quality causes anxiety, and industry and mining are discarded
Ground soil environment outstanding problem.The human activities such as industry and mining, agricultural and Environmental Background Values of Soils height be cause soil pollution or
The main reason for exceeded.The total exceeding standard rate of national soil is 16.1%, wherein slightly, slightly, moderate and serious pollution point ratio
Example is respectively 11.2%, 2.3%, 1.5% and 1.1%.Based on inorganic type, organic type takes second place pollution type, compound pollution
Proportion is smaller, and exceeded digit of inorganic pollution accounts for the 82.8% of all exceeded points.
In terms of pollution distribution situation, soils in south china pollution overweights the north；Yangtze River Delta, the Delta of the Pearl River, the old work in northeast
The subregions such as industry base soil contamination problem is more prominent, and southwest, variable charge soil heavy metals exceeding standard range are larger；Cadmium,
The situation gradually risen from northwest to the southeast, from northeast to southwestward is presented in 4 kinds of mercury, arsenic, lead level of inorganic contaminants distributions.
Major pollutants are cadmium, nickel, copper, arsenic, mercury, lead, DDT and polycyclic aromatic hydrocarbon.If with second national land investigation
As a result subject to, China's latest data of ploughing calculates for 2,030,770,000 mu, and the cultivated area of middle serious pollution accounts for 2.9%,
Reach 58,890,000 mu.
Mainly there is immobilization/stabilisation for the administering method of heavy metal pollution of soil at present, elution method, wash local method, electricity
Dynamics repairing method, chemical reduction method, phytoremediation, microorganism remediation.But overall that there are remediation efficiencies is low, processing cost is high etc.
Problem.
Therefore, it is necessary to learn from other's strong points to offset one's weaknesses from existing various methods, a kind of soil remediation medicament is invented.
Invention content
Technical problem to be solved by the invention is to provide it is a kind of prepare be simple and convenient to operate, the combined pollution that effect is good
Soil-repairing agent and application.
In order to solve the above technical problems, the present invention provides a kind of combined contamination soil renovation agents, it is characterised in that：It is described
The weight percent of each raw material of reparation medicament be：
Biomass carbon 30-50%；
Calcium hydroxy phosphate 10-20%；
Humic acid potassium 10-20%；
Alpha-cyclodextrin 10-20%；
Diatomite 5-10%；
Plant ash 5-10%；
The biomass carbon is the mass ratio of the stalk and calcium oxide using the mixture of stalk and calcium oxide as raw material
It is 20:1, vacuum pyrolysis 30min under conditions of system pressure is 20kPa, pyrolysis temperature is 500 DEG C are obtained by milled processed
The grain size arrived is 3mm solid powders below；
The calcium hydroxy phosphate, humic acid potassium, alpha-cyclodextrin, diatomite, plant ash are respectively 2mm solid powder below
End.
Further, the mass percent of each raw material is in the renovation agent：
Biomass carbon 40%；
Calcium hydroxy phosphate 15%；
Humic acid potassium 15%；
Alpha-cyclodextrin 15%；
Diatomite 10%；
Plant ash 5%.
A kind of combined contamination soil renovation agent of the present invention, by by biomass carbon, calcium hydroxy phosphate, humic acid potassium, α-ring
Dextrin, diatomite, plant ash uniformly mix according to the above ratio, you can obtain repairing medicament.
A kind of application method of combined contamination soil renovation agent of the present invention, includes the following steps：
(1) pedotheque containing heavy-metal composite pollution is taken, is used《Soil environment monitoring technical specification》Specified in detect
Method measures the content of available heavy metal in pedotheque；
(2) according to testing result, heavy-metal composite pollution soil in mass ratio：Repair medicament=50~200:1 addition is repaiied
Multiple medicament, will repair the uniform shakedown of medicament and is sprinkled upon pending soil surface；
(3) use the mode for turning over stirring pending soil is connected to the reparation medicament spilt on its upper berth be stirred 3 times with
On, mixed soil is formed, it is more than 50% to add water to keep the water content of mixed soil；
(4) plastic foil is covered on mixed soil, 3 days or more the reparation medicaments and heavy metal made in mixed soil of maintenance
Heavy metal in contaminated soil is fully reacted and is stabilized；
(5) in sample detecting mixed soil available heavy metal ion content.
The present invention --- a kind of combined contamination soil renovation agent, reference《Standard of soil environment quality》(GB15618-1995),
Using single factor contaminant index evaluation assessment, repairing and treating is carried out to combined contamination soil.Compared with prior art, of the invention to repair
Multiple medicament has the advantages that preparation method is simple, feasible, regulation effect is good.
Compared with the existing technology, the beneficial effects of the present invention are：
1, the biomass carbon in renovation agent is obtained by vacuum pyrolysis biomass, under vacuum biomass carbon obtained
Porosity is high, and adsorptive value is high；Using biomass such as stalks as raw material, resource is made full use of, avoids the environmental pollution caused by it is burned.
The yield of stalk charcoal during vacuum pyrolysis is promoted to increase by adding calcium oxide, the biomass obtained by vacuum pyrolysis
Charcoal has large specific surface area, and duct is abundant, easily adsorbs all kinds of heavy metal ion, reduces migration heavy metal ion in soil
Concentration；Calcium oxide itself in biomass carbon obtained can make soil pH value improve the increase of soil surface negative electrical charge, to soil
The compatibility of heavy metal is increased；Another aspect pH value increases, and is also beneficial to the presence of MOH+ and improves the suction of heavy metal ion
Attached amount, while heavy metal in soil being promoted to form hydroxide or reference state precipitation or co-precipitation.
2, the plant ash repaired in medicament effectively adjusts the nutrient in soil, improves soil；It is used as basic species simultaneously
Verifying restoring cadmium polluted has synergistic effect；
3, alpha-cyclodextrin is the cone cylinder shape molecule being made of glucose ring, is made of six glucose glycan molecules.Cyclodextrin is justified
Be hydrophobic region in cylinder, drum diameter is about 0.6nm, have accommodate other shapes and the molecule of lyophobic dust being sized for or
Group and be embedded in hole, form the characteristic of inclusion compound.Cyclodextrin adsorbs heavy metal ion and organic pollution, substantially passes through
What tetra-inclusion complex carried out.Alpha-cyclodextrin directly can be coordinated with heavy metal ion and generate multi-nuclear metal compound.
4, calcium hydroxy phosphate, chemical formula Ca10(PO4)6(OH)2, the hydroxyl nature that has is closer to the hydroxyl in organic matter
Base, hydroxyl are not alkaline, it is easier to dissociate hydrogen ion, have the ability combined with heavy metal ion.
5, humic acid potassium is a kind of non-uniform aromatic hydroxy-carboxylic salt of macromolecule, and appearance is that black particle or powdery are solid
Body is to be dissolved in water with the product after the extraction of KOH liquid reactions after finely being selected by lignite, in alkalinity, contained carboxyl, phenolic hydroxyl group etc.
Active group, heavy metal stabilization ability are strong；
Other than the respective stabilization of said components, complexing, flocculation, precipitation, suction-operated, biomass carbon, it is diatomaceous plus
Soil physico-chemical property can be improved well by entering, and greatly enhance the permeability of soil；Said components give full play to synergistic effect, pass through
It stabilizes, chelating, complexing, precipitation, absorption, improvement, adjust pH value so that the leaching rate of available heavy metal in the soil is significantly
It reduces.
Specific implementation mode：
Repair the preparation embodiment 1 of medicament：
Using the mixture of stalk and calcium oxide as raw material, the mass ratio of the stalk and calcium oxide is 20:1, in system pressure
Vacuum pyrolysis 30min under conditions of power is 20kPa, pyrolysis temperature is 500 DEG C, the grain size obtained by milled processed be 3mm with
Under solid powder；
Acquisition grain size is 2mm calcium hydroxy phosphates below, humic acid potassium, alpha-cyclodextrin, diatomite, plant ash solid powder
End；
It weighs according to mass percent：
Biomass carbon 40%；
Calcium hydroxy phosphate 15%；
Humic acid potassium 15%；
Alpha-cyclodextrin 15%；
Diatomite 10%；
Plant ash 5%.
Biomass carbon, calcium hydroxy phosphate, humic acid potassium, alpha-cyclodextrin, diatomite, plant ash are mixed according to the above ratio,
Reparation medicament is prepared.
Repair the preparation embodiment 2 of medicament：
Using the mixture of stalk and calcium oxide as raw material, the mass ratio of the stalk and calcium oxide is 20:1, in system pressure
Vacuum pyrolysis 30min under conditions of power is 20kPa, pyrolysis temperature is 500 DEG C, the grain size obtained by milled processed be 3mm with
Under solid powder；
Acquisition grain size is 2mm calcium hydroxy phosphates below, humic acid potassium, alpha-cyclodextrin, diatomite, plant ash solid powder
End；
It weighs according to mass percent：
Biomass carbon 50%；
Calcium hydroxy phosphate 20%；
Humic acid potassium 10%；
Alpha-cyclodextrin 10%；
Diatomite 5%；
Plant ash 5%.
Biomass carbon, calcium hydroxy phosphate, humic acid potassium, alpha-cyclodextrin, diatomite, plant ash are mixed according to the above ratio,
Reparation medicament is prepared.
Repair the preparation embodiment 3 of medicament：
Using the mixture of stalk and calcium oxide as raw material, the mass ratio of the stalk and calcium oxide is 20:1, in system pressure
Vacuum pyrolysis 30min under conditions of power is 20kPa, pyrolysis temperature is 500 DEG C, the grain size obtained by milled processed be 3mm with
Under solid powder；
Acquisition grain size is 2mm calcium hydroxy phosphates below, humic acid potassium, alpha-cyclodextrin, diatomite, plant ash solid powder
End；
It weighs according to mass percent：
Biomass carbon 30%；
Calcium hydroxy phosphate 10%；
Humic acid potassium 20%；
Alpha-cyclodextrin 20%；
Diatomite 10%；
Plant ash 10%.
Biomass carbon, calcium hydroxy phosphate, humic acid potassium, alpha-cyclodextrin, diatomite, plant ash are mixed according to the above ratio,
Reparation medicament is prepared.
Renovation agent application specific implementation mode obtained by embodiment 1-3 and technique effect：
300 kilograms of cadmium lead arsenic combined contamination soils are derived from Hengyang, Hunan Province farmland.
(1) it uses《Soil quality Available Lead and Cadmium detrmination atomic absorption method》(GB/T 23739-2009) and《Soil
Environmental monitoring technology specification》Specified in detection method measure pedotheque in available Cd content be 13.22mg/kg, effectively
State lead content is 22.17mg/kg, available state arsenic 16.18mg/kg.
(2) 300 kilograms of combined contamination soils are divided into three equal parts, per 100 kilograms of equal portions, extract embodiment 1- respectively
Each 2 kilograms of the reparation medicament provided in 3 will repair the uniform shakedown of medicament and be sprinkled upon the surface of 100 kilograms of pending soil respectively；
(3) pending soil is connected to the reparation medicament spilt on its upper berth by the way of stirring and is stirred 3 times or more, shape
At mixed soil, it is more than 50% to add water to keep the water content of mixed soil；
(4) cover plastic film on mixed soil, conserve 3 days, allow reparation medicament in mixed soil with it is heavy metal-polluted
Cadmium lead arsenic in dye soil fully reacts, sufficient stabilization；
(5) content for the soil available Cd lead arsenic that sample detecting embodiment 1-3 is applied respectively, soil available Cd
Lead arsenic content results are shown in Table 1, are satisfied by《Standard of soil environment quality》(GB15618-1995) requirement of two level agricultural soil in.
Renovation agent application result obtained by 1 embodiment 1-3 of table
Claims (3)
1. a kind of combined contamination soil renovation agent, it is characterised in that：The weight percent of each raw material of reparation medicament is：
Biomass carbon 30-50%；
Calcium hydroxy phosphate 10-20%；
Humic acid potassium 10-20%；
Alpha-cyclodextrin 10-20%；
Diatomite 5-10%；
Plant ash 5-10%；
The biomass carbon is using the mixture of stalk and calcium oxide as raw material, and the mass ratio of the stalk and calcium oxide is
20:1, vacuum pyrolysis 30min under conditions of system pressure is 20kPa, pyrolysis temperature is 500 DEG C are obtained by milled processed
Grain size be 3mm solid powders below；
The calcium hydroxy phosphate, humic acid potassium, alpha-cyclodextrin, diatomite, plant ash are respectively 2mm solid powders below.
2. a kind of combined contamination soil renovation agent according to claim 1, it is characterised in that：Each original of reparation medicament
The weight percent of material is：
Biomass carbon 40%；
Calcium hydroxy phosphate 15%；
Humic acid potassium 15%；
Alpha-cyclodextrin 15%；
Diatomite 10%；
Plant ash 5%.
3. application of the combined contamination soil renovation agent as claimed in claim 1 or 2 in repairing cadmium lead arsenic combined contamination soil.
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| CN201810645105.0A CN108929696A (en) | 2016-02-04 | 2016-02-04 | A kind of soil-repairing agent and preparation method thereof |
| CN201610079842.XA CN105583223B (en) | 2016-02-04 | 2016-02-04 | A kind of combined contamination soil renovation agent and application |
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| CN201610079842.XA CN105583223B (en) | 2016-02-04 | 2016-02-04 | A kind of combined contamination soil renovation agent and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105754609A (en) * | 2016-02-04 | 2016-07-13 | 周益辉 | Cadmium-lead-arsenic compound contaminated soil remediation agent and application thereof |
| CN106010546A (en) * | 2016-06-22 | 2016-10-12 | 四川省地质调查院 | Passivant for treating heavy metal cadmium in acidic farmland soil as well as preparation and use methods of passivant |
| CN106433657A (en) * | 2016-08-25 | 2017-02-22 | 惠安华晨贸易有限公司 | Chromium-contaminated soil remediation agent and preparation method thereof |
| CN106734175A (en) * | 2017-01-20 | 2017-05-31 | 湖南艾布鲁环保科技有限公司 | Solidification and stabilization medicament that a kind of As polluted soil is repaired and its preparation method and application |
| CZ307306B6 (en) * | 2017-05-05 | 2018-05-23 | Česká zemědělská univerzita v Praze | A mixture for gentle immobilization of risk elements in the soil, the method of its production and its use |
| CN107793213A (en) * | 2017-09-08 | 2018-03-13 | 芜湖玖荣生物科技有限公司 | A kind of African Chrysanthemum soil conditioner and preparation method thereof |
| CN108148598A (en) * | 2017-12-12 | 2018-06-12 | 常州市雄泰纺织品有限公司 | A kind of heavy-metal contaminated soil passivator and preparation method thereof |
| CN108251118B (en) * | 2018-01-25 | 2021-04-13 | 武汉瑞景环境修复工程有限公司 | Biochar, soil heavy metal stabilizing agent and preparation method thereof |
| CN108913153A (en) * | 2018-08-08 | 2018-11-30 | 环境保护部华南环境科学研究所 | A kind of composite material suitable for heavy-metal composite pollution farmland safe utilization |
| CN108841398A (en) * | 2018-08-09 | 2018-11-20 | 北京泷涛环境修复有限公司 | Medicament, preparation method and restorative procedure are repaired in passivation for As polluted soil |
| CN110089226A (en) * | 2019-03-19 | 2019-08-06 | 广东筑奥生态环境股份有限公司 | One elite stand grass transplants soil modification restorative procedure |
| CN109913231A (en) * | 2019-04-18 | 2019-06-21 | 江西师范大学 | A kind of novel inorganic-biological carbon soil passivator and preparation method thereof |
| CN110564425A (en) * | 2019-09-16 | 2019-12-13 | 赵龙 | heavy metal contaminated soil remediation agent and preparation method and use method thereof |
| CN112642850B (en) * | 2020-11-13 | 2022-06-07 | 湖南有色金属研究院有限责任公司 | Remediation method for antagonistic heavy metal contaminated soil |
| CN114538892A (en) * | 2022-03-25 | 2022-05-27 | 浙江寰龙环境科技有限公司 | Low-cost ceramsite preparation process based on harmless treatment of polluted soil |
| CN115450601B (en) * | 2022-10-09 | 2023-12-22 | 中国石油大学(北京) | Foam fracturing repair method for radial well of low-permeability polluted soil |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101195123A (en) * | 2007-11-29 | 2008-06-11 | 北京师范大学 | Method for renovating polycyclic aromatic hydrocarbon contaminated soil by using cyclodextrin allotopia |
| CN102807872B (en) * | 2012-08-21 | 2014-04-16 | 中国科学院沈阳应用生态研究所 | Biochar mixing type protected horticultural vegetable field soil heavy metal passivant and preparation method thereof |
| CN104056852B (en) * | 2014-06-20 | 2016-04-06 | 四川大学 | The chemistry of compound heavy-metal contaminated soil and microbial association restorative procedure and application |
| CN105061114B (en) * | 2015-08-20 | 2018-07-10 | 山东省农业科学院农业资源与环境研究所 | A kind of heavy metal polluted soil of farmland composite modifying agent and preparation method thereof and method of administration |
| CN105127187B (en) * | 2015-09-30 | 2018-06-15 | 福建沃土环保有限公司 | The method that oil-heavy-metal contaminated soil is repaired in a kind of animals and plants-charcoal collaboration |
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