CN104492025A - Oxidant and method for remedying organic contaminated soil/underground water - Google Patents
Oxidant and method for remedying organic contaminated soil/underground water Download PDFInfo
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- CN104492025A CN104492025A CN201410713218.1A CN201410713218A CN104492025A CN 104492025 A CN104492025 A CN 104492025A CN 201410713218 A CN201410713218 A CN 201410713218A CN 104492025 A CN104492025 A CN 104492025A
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- hydrogen peroxide
- underground water
- ferrous sulfate
- oxidant
- sodium peroxydisulfate
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
- A62D3/38—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by oxidation; by combustion
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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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Soil Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to an oxidant and a method for remedying organic contaminated soil/underground water, belonging to the field of soil environment remediation. The oxidant comprises sodium persulfate, ferrous sulfate and hydrogen peroxide. The remedying method comprises the following steps: measuring the contents of organic contaminations in the contaminated soil/underground water; putting the contaminated soil/underground water in a closed container; adding the ferrous sulfate or a ferrous sulfate complex till the concentration of ferrous ions is 20-200mg/L; adding a sodium persulfate solution till the concentration of sodium persulfate is 5-50g/L; adding hydrogen peroxide containing 30 volume percent of an activator 2 by controlling the addition amount to be 2-20 percent; and adding an appropriate amount of deionzed water, uniformly mixing, and then reacting for 6-48 hours. The ferrous sulfate and the hydrogen peroxide of the oxidant are wide in sources, is low in cost and is easily obtained; compared with sodium persulfate activated singly by the hydrogen peroxide, the consumption amount of the oxidant disclosed by the invention is reduced, and the remediation safety is relatively good; the ferrous sulfate and the hydrogen peroxide are jointly used as the activator, and the oxidation effect of the oxidant disclosed by the invention is better than that of sodium persulfate activated by a single activator, and the application contamination range is relatively wide.
Description
Technical field
The present invention relates to the soil/underground water pollution control field in environmental protection, relate to the oxidant of renovation of organic pollution soil and the method for renovation of organic pollution soil/underground water in particular.
Background technology
Along with the quick propelling of Urbanization in China, the strategy that each city is generally taked " move back two and enter three " carries out the adjustment of the industrial structure and city layout, a large amount of insecticide factories, chemical plant are closed or resettlement, and a large amount of contaminated sites left at surrounding city are faced with secondary development.These places much relate to the organic contamination of high concentration excessive risk, constitute serious threat to Living environment safety of human being, in the urgent need to repairing the soil of these contaminated sites and underground water.Chemical oxidation recovery technique has efficiently, low cost, eco-friendly feature, effectively can process the combined pollution that Some Organic Pollutants is formed, and is applicable to very much the needs of China's contaminated soil and groundwater remediation.Conventional oxidant comprises Fenton reagent, potassium permanganate, ozone, persulfate etc.Wherein activation sodium peroxydisulfate is the novel oxidized medicament of one in environment remediation field, has the feature of high stability, highly-water-soluble (under normal temperature 595g/L), free from extraneous odour, in larger pH value interval, all has stronger oxidability.The organo-chlorine pollutant of activation sodium peroxydisulfate suitable treatment comprises chloralkane, chlorinated aromatic hydrocarbons and part containing chloro pesticide.Relative to the conventional oxidation such as Fenton reagent, potassium permanganate medicament, the destruction of activation sodium peroxydisulfate to the soil organism, indigenous microorganism group is lower, is conducive to the recovery of repairing rear ecological environment of soil function.
In the world still be in the exploratory stage to the investigation and application of activation sodium peroxydisulfate repairing polluted soil/underground water at present, application study in conjunction with actual contaminated soil/underground water is also more limited, and the research of domestic utilization activation sodium peroxydisulfate process contaminated soil is yet in the starting stage.The activation method of sodium peroxydisulfate comprises thermal activation, ferrous activation, alkali activation, Activation of Hydrogen Peroxide Solution etc.Thermal activation as the activation method of best results, because relatively high cost makes its engineering application limited; Ferrous activating cost is lower, all has preferably oxidation effectiveness for majority of organic pollutants, but not high to part aqueous extreme difference, constitutionally stable oxidation operation efficiency; Alkali activation is larger on soil property impact; Also there is the problem not high to some organic pollutants oxidation efficiency in Activation of Hydrogen Peroxide Solution.In order to make up the deficiency of activation method, activation side being carried out combining sodium peroxydisulfate is activated, oxidation processes organic polluted soil/underground water.
Suitable combination is carried out to activation method and can reach the effect strengthening sodium peroxydisulfate oxidability.But the simple superposition of multiple activation method can not ensure the raising of oxidation effectiveness, the effect suppressing reaction also may be played in some situations, such as ferrous ion easily forms Precipitation solution in the basic conditions, and therefore ferrous activation and alkali activation should not combinationally use.
Summary of the invention
1. invent the technical problem that will solve
The problem that combined pollution, repair process easily cause secondary pollution is there is for existing organic polluted soil/underground water, the invention provides the agent of combination active oxidation and the method for renovation of organic pollution soil, use it for the reparation of organic polluted soil/underground water, the combined pollution problem of soil/underground water can be solved, make repairing effect good, after repairing, environmental risk is low.
2. technical scheme
Reaction principle: the heat that reaction ferrous ions, hydrogen peroxide and reaction discharge can play activation effect to sodium peroxydisulfate.Ferrous iron is first mixed with sodium peroxydisulfate, generation potentiometric titrations can be excited, continue to add hydrogen peroxide, free chain reaction can be caused, promote the generation of hydroxyl radical free radical and potentiometric titrations, effectively can improve the intensity of radical reaction, be conducive to the fast degradation of complex environment pollutant.Ferrous iron+hydrogen peroxide+sodium peroxydisulfate combination activating agent, has safety, stable characteristic.
An oxidant for renovation of organic pollution soil/underground water, its component is sodium peroxydisulfate, ferrous sulfate and hydrogen peroxide.
In use sodium peroxydisulfate, ferrous sulfate and hydrogen peroxide are added or disposable input respectively during above-mentioned oxidant.
In component dosage for using time solution in after sodium peroxydisulfate solution content be 5g/L, ferrous sulfate concentration is 100mg/L; Activation of Hydrogen Peroxide Solution group dosage is volume percent content is 2.5%.
The oxidant of renovation of organic pollution soil/underground water, its composition comprises sodium peroxydisulfate, and it also comprises ferrous sulfate, hydrogen peroxide.
Above-mentioned renovation of organic pollution soil/underground water method, step comprises:
(1) content of contaminated soil/Organic Chemicals In Groundwater is measured;
(2) getting contaminated soil/underground water loads in closed container;
(3) add activator ferrous sulfate or ferrous sulfate complex compound, make the concentration of ferrous ion be 20 ~ 200mg/L;
(4) add sodium peroxydisulfate solvent, make the concentration of sodium peroxydisulfate be 5 ~ 50g/L;
(5) add activator volume ratio 30% hydrogen peroxide, it is 2% ~ 20% (volume ratio) that addition controls;
(6) add appropriate amount of deionized water, after mixing, react 6-48h.
3. beneficial effect
The invention provides oxidant and the method for renovation of organic pollution soil/underground water, relative to prior art, have the following advantages: the ferrous sulfate in (1) system, hydrogen peroxide source is wide, and obtain easily, cost is low; (2) compared with simple Activation of Hydrogen Peroxide Solution sodium peroxydisulfate, decrease the consumption of hydrogen peroxide, reparation security is better; (3) conbined usage ferrous sulfate and hydrogen peroxide are activator, and compare single activator activation sodium peroxydisulfate, oxidation effectiveness is better, and applicable pollution range is wider.
Detailed description of the invention
Further illustrate of the present invention practicing by the following examples.
Embodiment 1
Prepare the cis-1 of 250 μ g/L, 2-dichloroethylene simulating pollution underground water.In solution, sodium peroxydisulfate solution is added by the dosage of 5g/L.Three groups of experiments are set, adopt the activation sodium peroxydisulfate of different activation method to process contaminant water, be respectively: 1. ferrous ion activation sodium peroxydisulfate; 2. Activation of Hydrogen Peroxide Solution sodium peroxydisulfate; 3. ferrous ion+hydrogen peroxide combination activation sodium peroxydisulfate.Wherein ferrous sulfate active set ensures that ferrous ion concentration is 100mg/L; Activation of Hydrogen Peroxide Solution group dosage is 2.5% (volume ratio), and combination activation then adds the ferrous ion of 100mg/L and the hydrogen peroxide of volume ratio 2.5% simultaneously.
React 48h under room temperature, ensure that in course of reaction, reaction bulb is zero head space state, to avoid the volatilization of pollutant.When measuring cis-1,2-dichloroethylene concentration, use purge and trap automatic sampler sample introduction according to national standard method, gas chromatograph-mass spectrometer (GC-MS) measures.Result shows: the cis-1 in solution, 2-dichloroethylene can be oxidized by activation sodium peroxydisulfate, and the clearance of three experimental group is respectively 90.7%, 59.4% and 93.0%.
Embodiment 2
Prepare 1,2, the 3-trichloro-benzenes simulating pollution underground water of 250 μ g/L.In solution, sodium peroxydisulfate solution is added by the dosage of 5g/L.Three groups of experiments are set, adopt the activation sodium peroxydisulfate of different activation method to process contaminant water, be respectively: 1. ferrous ion activation sodium peroxydisulfate; 2. Activation of Hydrogen Peroxide Solution sodium peroxydisulfate; 3. ferrous ion+hydrogen peroxide combination activation sodium peroxydisulfate.Wherein ferrous sulfate active set ensures that ferrous ion concentration is 100mg/L; Activation of Hydrogen Peroxide Solution group dosage is 2.5% (volume ratio), and combination activation then adds the ferrous ion of 100mg/L and the hydrogen peroxide of volume ratio 2.5% simultaneously.
React 48h under room temperature, ensure that in course of reaction, reaction bulb is zero head space state, to avoid the volatilization of pollutant.When measuring 1,2,3-dichloro-benzenes concentration, use purge and trap automatic sampler sample introduction according to national standard method, gas chromatograph-mass spectrometer (GC-MS) measures.Result shows: 1,2,3-trichloro-benzenes in solution can be oxidized by activation sodium peroxydisulfate, and the clearance of three experimental group is respectively 79.1%, 20.6% and 84.6%.
Embodiment 3
Prepare the bromofom simulating pollution underground water of 250 μ g/L.In solution, sodium peroxydisulfate solution is added by the dosage of 5g/L.Three groups of experiments are set, adopt the activation sodium peroxydisulfate of different activation method to process contaminant water, be respectively: 1. ferrous ion activation sodium peroxydisulfate; 2. Activation of Hydrogen Peroxide Solution sodium peroxydisulfate; 3. ferrous ion+hydrogen peroxide combination activation sodium peroxydisulfate.Wherein ferrous sulfate active set ensures that ferrous ion concentration is 100mg/L; Activation of Hydrogen Peroxide Solution group dosage is 2.5% (volume ratio), and combination activation then adds the ferrous ion of 100mg/L and the hydrogen peroxide of volume ratio 2.5% simultaneously.
React 48h under room temperature, ensure that in course of reaction, reaction bulb is zero head space state, to avoid the volatilization of pollutant.When measuring bromofom concentration, use purge and trap automatic sampler sample introduction according to national standard method, gas chromatograph-mass spectrometer (GC-MS) measures.Result shows: the bromofom in solution can be oxidized by activation sodium peroxydisulfate, and the clearance of three experimental group is respectively 43.4%, 5.0% and 59.1%.
Embodiment 4
Preparation chlorobenzene contaminated soil, testing its chlorobenzene concentration is 915.5mg/kg.Get 5g contaminated soil in reaction bulb, in solution, add sodium peroxydisulfate solution by the dosage of 5g/L, add activator 1 citric acid complex ferrous iron, sodium peroxydisulfate solution, activator 2 hydrogen peroxide successively, ensure that native liquor ratio is 1:2.Ferrous sulfate-citric acid complex solution ferrous ions concentration is 150mg/L, and ferrous sulfate is 5:1 with the ratio of the material amount of citric acid.Hydrogen peroxide dosage is respectively 2%, 5%, 10%, 15%, 20% (volume ratio).React 24h under room temperature, ensure that in course of reaction, reaction bulb is zero head space state, to avoid the volatilization of pollutant.After reaction terminates, centrifugal, remove supernatant, in soil, add 10mL methyl alcohol extract.Centrifuging and taking supernatant after extraction, to enter purge and trap automatic sampler sample introduction after deionized water dilution, practical gas chromatograph-mass spectrometer (GC-MS) measures chlorobenzene concentration.Result shows: add hydrogen peroxide volume ratio 2%, 5%, 10%, 15%, 20% as activator, and after reaction, in soil, the clearance of chlorobenzene is respectively 81.3%, 88.5%, 95.1%, 96.7%, 98.2%.
Claims (6)
1. an oxidant for renovation of organic pollution soil/underground water, its component is sodium peroxydisulfate, ferrous sulfate and hydrogen peroxide.
2. the oxidant of a kind of renovation of organic pollution soil/underground water according to claim 1, is characterized in that sodium peroxydisulfate, ferrous sulfate and hydrogen peroxide being added respectively or disposable input in use.
3. the oxidant of a kind of renovation of organic pollution soil/underground water according to claim 1, it is characterized in that in component dosage for using time solution in after sodium peroxydisulfate solution content be 5g/L, ferrous sulfate concentration is 100mg/L; Activation of Hydrogen Peroxide Solution group dosage is volume percent content is 2.5%.
4. renovation of organic pollution soil/underground water method, step comprises:
(1) content of contaminated soil/Organic Chemicals In Groundwater is measured;
(2) getting contaminated soil/underground water loads in closed container;
(3) add activator ferrous sulfate or ferrous sulfate complex compound, make the concentration of ferrous ion be 20 ~ 200mg/L;
(4) add sodium peroxydisulfate solvent, make the concentration of sodium peroxydisulfate be 5 ~ 50g/L;
(5) add the hydrogen peroxide that activator volume ratio is 30%, addition controls for liquor capacity 2% ~ 20%;
(6) add appropriate amount of deionized water, after mixing, react 6-48h.
5. according to the method for the renovation of organic pollution soil/underground water described in claim 4, it is characterized in that described activator ferrous sulfate or ferrous sulfate complex compound both to have excited sodium peroxydisulfate to produce potentiometric titrations, hydrogen peroxide can also be excited to produce hydroxyl radical free radical, cause chain reaction.
6. the method for renovation of organic pollution soil/underground water according to claim 3, is characterized in that described activator hydrogen peroxide also can produce the hydroxyl radical free radical with strong oxidizing property simultaneously.
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| CN201410713218.1A CN104492025A (en) | 2014-12-01 | 2014-12-01 | Oxidant and method for remedying organic contaminated soil/underground water |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149335A (en) * | 2015-06-24 | 2015-12-16 | 武汉都市环保工程技术股份有限公司 | In-situ chemical oxidation restoration construction method for organic contaminated soil |
| CN105344704A (en) * | 2015-11-30 | 2016-02-24 | 重庆大学 | New remediation method for soil contaminated by petroleum hydrocarbon |
| CN105733589A (en) * | 2016-04-01 | 2016-07-06 | 重庆理工大学 | Repair composition and repair method for cyanide contaminated soil |
| CN106623380A (en) * | 2016-11-10 | 2017-05-10 | 广东省生态环境技术研究所 | Remediation method of organic contaminant-heavy metal compound contaminated soil |
| CN106670222A (en) * | 2016-12-22 | 2017-05-17 | 常州大学 | Method for treating organochlorine-pesticide-contaminated soil through activated persulfate oxidization |
| CN106799396A (en) * | 2017-03-01 | 2017-06-06 | 北京建工环境修复股份有限公司 | A kind of soil and underground water high-pressure rotary-spray stir joint in-situ remediation method with shallow-layer |
| CN107138519A (en) * | 2017-07-06 | 2017-09-08 | 爱土工程环境科技有限公司 | A kind of cyanide polluted soil dystopy chemical oxidation restorative procedure |
| CN107497849A (en) * | 2017-10-10 | 2017-12-22 | 吴洪生 | The in situ of pedo relict antibiotic/agricultural chemicals eliminates recovery technique and application |
| CN108160694A (en) * | 2017-12-26 | 2018-06-15 | 北京宜为凯姆环境技术有限公司 | For the complex activation method of the persulfate of environment remediation |
| CN108356070A (en) * | 2018-04-28 | 2018-08-03 | 东南大学 | A kind of method that fluorine chloronitrobenzene pollutes in degradation soil |
| CN108380661A (en) * | 2018-01-30 | 2018-08-10 | 华中师范大学 | A kind of method of persulfate and hydrogen peroxide compound system showering organic pollution soil |
| CN108405600A (en) * | 2018-04-23 | 2018-08-17 | 华中师范大学 | A kind of method of sodium peroxydisulfate and hydrogen peroxide compound system in-situ immobilization organic pollution soil |
| CN108580539A (en) * | 2018-04-18 | 2018-09-28 | 浙江大学 | A kind of method of chemical oxidation coupling microorganism remediation organic polluted soil |
| CN108690632A (en) * | 2018-07-02 | 2018-10-23 | 中国石油天然气集团有限公司 | A kind of soil pollution remediation composition and its application |
| CN109433816A (en) * | 2018-11-26 | 2019-03-08 | 天津大学前沿技术研究院有限公司 | A kind of restorative procedure of glyphosate-heavy-metal composite pollution agricultural land soil |
| CN110407178A (en) * | 2018-04-27 | 2019-11-05 | 程贤阳 | A kind of Metal Substrate liquid oxidizer and preparation method thereof |
| CN110527513A (en) * | 2019-10-10 | 2019-12-03 | 北京高能时代环境技术股份有限公司 | A kind of reparation medicament and restorative procedure for repairing containing cyanide polluted soil |
| CN111847821A (en) * | 2020-07-21 | 2020-10-30 | 天津绿缘环保工程股份有限公司 | Chlorobenzene polluted bottom mud remediation method |
| CN111940471A (en) * | 2020-09-07 | 2020-11-17 | 吉安创成环保科技有限责任公司 | Method for reducing organic matter content in solid waste |
| CN112607892A (en) * | 2020-11-09 | 2021-04-06 | 西安重光明宸检测技术有限公司 | Efficient and environment-friendly method for reducing COD (chemical oxygen demand) of sewage |
| CN114289488A (en) * | 2021-11-23 | 2022-04-08 | 生态环境部南京环境科学研究所 | Ferrous ion activation method for repairing organic contaminated soil |
| CN115301714A (en) * | 2022-08-11 | 2022-11-08 | 徐州振丰新型墙体材料有限公司 | Method for making brick by harmless sintering of polluted soil |
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Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149335A (en) * | 2015-06-24 | 2015-12-16 | 武汉都市环保工程技术股份有限公司 | In-situ chemical oxidation restoration construction method for organic contaminated soil |
| CN105344704A (en) * | 2015-11-30 | 2016-02-24 | 重庆大学 | New remediation method for soil contaminated by petroleum hydrocarbon |
| CN105733589B (en) * | 2016-04-01 | 2019-07-30 | 重庆理工大学 | Remediation composition and restorative procedure for cyanide polluted soil |
| CN105733589A (en) * | 2016-04-01 | 2016-07-06 | 重庆理工大学 | Repair composition and repair method for cyanide contaminated soil |
| CN106623380A (en) * | 2016-11-10 | 2017-05-10 | 广东省生态环境技术研究所 | Remediation method of organic contaminant-heavy metal compound contaminated soil |
| CN106670222A (en) * | 2016-12-22 | 2017-05-17 | 常州大学 | Method for treating organochlorine-pesticide-contaminated soil through activated persulfate oxidization |
| CN106799396B (en) * | 2017-03-01 | 2022-04-08 | 北京建工环境修复股份有限公司 | High-pressure rotary spraying and shallow layer stirring combined in-situ remediation method for soil and underground water |
| CN106799396A (en) * | 2017-03-01 | 2017-06-06 | 北京建工环境修复股份有限公司 | A kind of soil and underground water high-pressure rotary-spray stir joint in-situ remediation method with shallow-layer |
| CN107138519A (en) * | 2017-07-06 | 2017-09-08 | 爱土工程环境科技有限公司 | A kind of cyanide polluted soil dystopy chemical oxidation restorative procedure |
| CN107138519B (en) * | 2017-07-06 | 2021-08-27 | 爱土工程环境科技有限公司 | Ectopic chemical oxidation remediation method for soil polluted by cyanide |
| CN107497849A (en) * | 2017-10-10 | 2017-12-22 | 吴洪生 | The in situ of pedo relict antibiotic/agricultural chemicals eliminates recovery technique and application |
| CN108160694A (en) * | 2017-12-26 | 2018-06-15 | 北京宜为凯姆环境技术有限公司 | For the complex activation method of the persulfate of environment remediation |
| CN108380661A (en) * | 2018-01-30 | 2018-08-10 | 华中师范大学 | A kind of method of persulfate and hydrogen peroxide compound system showering organic pollution soil |
| CN108580539A (en) * | 2018-04-18 | 2018-09-28 | 浙江大学 | A kind of method of chemical oxidation coupling microorganism remediation organic polluted soil |
| CN108405600A (en) * | 2018-04-23 | 2018-08-17 | 华中师范大学 | A kind of method of sodium peroxydisulfate and hydrogen peroxide compound system in-situ immobilization organic pollution soil |
| CN110407178A (en) * | 2018-04-27 | 2019-11-05 | 程贤阳 | A kind of Metal Substrate liquid oxidizer and preparation method thereof |
| CN108356070A (en) * | 2018-04-28 | 2018-08-03 | 东南大学 | A kind of method that fluorine chloronitrobenzene pollutes in degradation soil |
| CN108690632A (en) * | 2018-07-02 | 2018-10-23 | 中国石油天然气集团有限公司 | A kind of soil pollution remediation composition and its application |
| CN109433816A (en) * | 2018-11-26 | 2019-03-08 | 天津大学前沿技术研究院有限公司 | A kind of restorative procedure of glyphosate-heavy-metal composite pollution agricultural land soil |
| CN110527513A (en) * | 2019-10-10 | 2019-12-03 | 北京高能时代环境技术股份有限公司 | A kind of reparation medicament and restorative procedure for repairing containing cyanide polluted soil |
| CN111847821A (en) * | 2020-07-21 | 2020-10-30 | 天津绿缘环保工程股份有限公司 | Chlorobenzene polluted bottom mud remediation method |
| CN111940471A (en) * | 2020-09-07 | 2020-11-17 | 吉安创成环保科技有限责任公司 | Method for reducing organic matter content in solid waste |
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