CN104858230A - Restoration method for soil polluted by benzyl chloride and special water distributor - Google Patents
Restoration method for soil polluted by benzyl chloride and special water distributor Download PDFInfo
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- CN104858230A CN104858230A CN201510251003.7A CN201510251003A CN104858230A CN 104858230 A CN104858230 A CN 104858230A CN 201510251003 A CN201510251003 A CN 201510251003A CN 104858230 A CN104858230 A CN 104858230A
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- benzyl chloride
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- contaminated soil
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- water distributor
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Abstract
The invention provides a restoration method for soil polluted by benzyl chloride and a special water distributor. In order to achieve the purpose of the restoration method for soil polluted by benzyl chloride and the special water distributor, according to the technical scheme, the restoration method for soil polluted by benzyl chloride includes the following steps that firstly, the content of benzyl chloride in the soil polluted by benzyl chloride is measured; secondly, a potassium permanganate-nitric acid compound solution is prepared; and thirdly, the prepared solution is added to the soil polluted by benzyl chloride and fully reacts with the soil polluted by benzyl chloride. Besides, the special water distributor is characterized in that the water distributor is a tube with a conical end, and the portion, close to the conical end, of the tube is provided with a compound solution outlet. Soil restoration is performed according to the technical scheme, i.e., the compound solution is added to the soil through the water distributor for a restoration reaction. After the reaction ends, detection shows that the benzyl chloride in the soil is basically removed; the soil restoration method is environment-friendly and efficient.
Description
Technical field
The present invention relates to field of environmental improvement, specifically relate to a kind of restorative procedure of benzyl chloride contaminated soil and special water-locator.
Background technology
Benzyl chloride is a kind of important organic synthesis intermediate, belong to halogenation benzyl class irritant compound, on agricultural chemicals, it not only can directly synthesize organophosphorus fungicide kitazine, IBP, and can as the important source material of other many intermediates, as synthesis benzene acetonitrile, chlorobenzoyl chloride, 3-phenoxy-benzaldehyde etc., in addition, benzyl chloride is all widely used in medicine, spices, color additive, synthetic resin etc., and it is a kind of important chemical industry, intermediate produced by medicine.All unavoidably a large amount of benzyl chloride intermediates is contained in the waste liquid that so enterprise is produced in process of production or discarded object.Benzyl chloride itself has tearing property, high poison, belong to carcinogen, and there is environmental persistence, because the scope of application of benzyl chloride own is wide, use amount is larger, in transportation, benzyl chloride leaks, or by each manufacturing enterprise brought waste liquid containing benzyl chloride or discarded object directly abandons in process of production, or leak in process of production, capital directly causes benzyl chloride to enter soil, final contaminated soil.How to repair to dispose for benzyl chloride contaminated soil and temporarily also reported without any method.
Summary of the invention
Main purpose of the present invention is to provide a kind of restorative procedure of benzyl chloride contaminated soil and special water-locator.The method can make benzyl chloride contaminated soil be repaired the effect reaching and reclaim.
In order to realize foregoing invention object, the technical solution adopted in the present invention is: a kind of restorative procedure of benzyl chloride contaminated soil, comprises the steps:
(1) benzyl chloride content in benzyl chloride contaminated soil is surveyed;
(2) potassium permanganate-nitric acid combination solution is configured;
(3) join solution adds in benzyl chloride contaminated soil and fully reacts by above-mentioned.
In addition, for the water-locator that above benzyl chloride contaminated soil remediation is special, it is characterized in that: the body of described water-locator to be one end be taper, the body portion near taper one end is provided with compositional liquor outlet.
Soil remediation is implemented according to technical scheme of the present invention, utilize water-locator to be added by compositional liquor in soil and carry out reparation reaction, fallen by basic handling through detecting benzyl chloride in soil after reaction terminates, the a series of material be safe from harm to soil finally obtained, as manganese dioxide, potassium nitrate, Potassium Benzoate etc.This soil remediation method of disposal environment-friendly high-efficiency.
Accompanying drawing explanation
Fig. 1 is that water-locator of the present invention uses schematic diagram.
Detailed description of the invention
A restorative procedure for benzyl chloride contaminated soil, comprises step: (1) surveys benzyl chloride content in benzyl chloride contaminated soil; (2) potassium permanganate-nitric acid combination solution is configured; (3) join solution adds in benzyl chloride contaminated soil and fully reacts by above-mentioned.Reaction terminates, and soil is generally in faintly acid, and pH value, about 6-7, meets " standard of soil environment quality GB15618-1995 ".Getting a certain amount of benzyl chloride contaminated soil is placed in reaction vessel, after adopting above technical scheme to implement reparation to soil, in soil, benzyl chloride is fallen by basic handling after testing, and a series of material be safe from harm to soil finally obtained, as manganese dioxide, potassium nitrate, Potassium Benzoate etc.As everyone knows, Mn is the element that in the earth's crust, reserves are abundant, MnO
2natural existence in soil, KNO
3be very good compound fertilizer, Potassium Benzoate is food additives is innocuous substance, can increase the nutrition of soil.Therefore in soil, introduce acid potassium permanganate reparation disposal benzyl chloride contaminated soil there is no environmental risk.That is the method by soil from poisonous be converted into nontoxic, and environment-friendly high-efficiency.Soil after repairing carries out experiment of reclaiming, and as cultivation bracketplant, plant grows fine, and proves that the soil after repairing possesses the condition of reclaiming.
Scheme concrete is further, in described potassium permanganate-nitric acid combination solution, the mass ratio of potassium permanganate and nitric acid is 6-14.The mass concentration of nitric acid product used here itself is 65%.The acidity value of this combination solution concrete can decide according to the situation of benzyl chloride soil to be disposed, and to be consumed be as the criterion with benzyl chloride in final soil by disposal.
Wherein, in described step (3), solution joins in benzyl chloride soil by water-locator, and described water-locator outlet is positioned at the lower position of soil.Here water-locator is in fact a pipe, this pipe one end place to diminish and in taper to end head diameter gradually from body, the body of contiguous conical end portion position is provided with compositional liquor outlet, during concrete use, the end of taper is inserted bottom soil, and compositional liquor outlet is also equivalent at soil lower position, now compositional liquor enters soil by described outlet, along with compositional liquor continues to add, composite liquid measure increases, compositional liquor little by little overflows through soil surface by bottom to top in soil, thus soak into whole soil, because the density of benzyl chloride is larger, generally can drop on soil lower floor, so adopt water-locator to insert in benzyl chloride contaminated soil, acid permanganate soln is added fashionablely up to soak into bottom benzyl chloride contaminated soil, potassium permanganate-nitric acid combination solution is made fully to contact with benzyl chloride soil like this, reach the object of fully reaction rehabilitating soil.
In described step (3), the reaction time is 10-15 days, and reaction temperature is room temperature.After reaction terminates, soil, without obvious smell, detects potassium permanganate residual quantity lower than 10mg/kg; Benzyl chloride residual quantity is lower than 15mg/kg, and repairing effect is fine.
It may be noted that in described step (3), reaction is carried out in a reservoir.That is, being chlorinated benzyl contaminated soil is generally from impurely transporting disposal center back by it, then be placed in a container of isolating with ambient soil to carry out repairing and dispose, on the one hand if need to build divider wall impurely repairing disposal on the spot, on-the-spot also needs drops into a large amount of manpowers and material resources, if do not build divider wall in addition to repair on the spot, so in repair process, which type of harm also can or can not be brought not determine unpolluted soil.Contaminated soil is transported back processing center to carry out repairing the secondary injury avoiding and may bring to environment in repair process, such reparation is simultaneously also more cost-saving again.
For above restorative procedure, also have a kind of water-locator of special use, described water-locator 10 for one end be the body of taper, the body portion of close taper one end 11 is provided with compositional liquor and exports 12.Conical end portion is easier to water-locator to insert bottom soil, specifically also sets forth about its using method of water-locator 10 with before acting on, just repeats no more here.
More specifically described body is pipe, and described taper one end 11 is that coniform, described compositional liquor outlet 12 is positioned on the pipe body of pipe and junction, taper one end 11.The water distributor structure of certain pipe is more simple, uses also more convenient.
Embodiment 1
(1) benzyl chloride content 920mg/kg in benzyl chloride contaminated soil is surveyed; (2) configuration quality ratio is 6 potassium permanganate-nitric acid combination solution; (3) join acidity is that the combination solution of 0.045mol/L to add in benzyl chloride contaminated soil under normal temperature condition fully reaction 10 days according to per kilogram benzyl chloride contaminated soil 0.25L by above-mentioned, it is 7 that reaction terminates soil pH value.
Embodiment 2
(1) benzyl chloride content 950mg/kg in benzyl chloride contaminated soil is surveyed; (2) configuration quality ratio is 14 potassium permanganate-nitric acid combination solution; (3) join acidity is that the combination solution of 0.003mol/L to add in benzyl chloride contaminated soil under normal temperature condition fully reaction 15 days according to per kilogram benzyl chloride contaminated soil 0.2L by above-mentioned, it is 6.8 that reaction terminates soil pH value.
Embodiment 3
(1) benzyl chloride content 930mg/kg in benzyl chloride contaminated soil is surveyed; (2) configuration quality ratio is 9 potassium permanganate-nitric acid combination solution; (3) join acidity is that the combination solution of 0.04mol/L to add in benzyl chloride contaminated soil under normal temperature condition fully reaction 12 days according to per kilogram benzyl chloride contaminated soil 0.22L by above-mentioned, it is 6.7 that reaction terminates soil pH value.
To plant in the soil obtained under above various repairing condition bracketplant, find that bracketplant grows fine, further demonstrate the soil after reparation and possess the condition of reclaiming.
Claims (7)
1. a restorative procedure for benzyl chloride contaminated soil, comprises the steps:
(1) benzyl chloride content in benzyl chloride contaminated soil is surveyed;
(2) potassium permanganate-nitric acid combination solution is configured;
(3) join solution adds in benzyl chloride contaminated soil and fully reacts by above-mentioned.
2. the restorative procedure of a kind of benzyl chloride contaminated soil as claimed in claim 1, is characterized in that: in described potassium permanganate-nitric acid combination solution, the mass ratio of potassium permanganate and nitric acid is 6-14.
3. the restorative procedure of a kind of benzyl chloride contaminated soil as claimed in claim 1, is characterized in that: in described step (3), solution joins in benzyl chloride soil by water-locator, and described water-locator outlet is positioned at the lower position of soil.
4. the restorative procedure of a kind of benzyl chloride contaminated soil as claimed in claim 1, is characterized in that: in described step (3), the reaction time is 10-15 days, and reaction temperature is room temperature.
5. the restorative procedure of a kind of benzyl chloride contaminated soil as claimed in claim 1, is characterized in that: in described step (3), reaction is carried out in a reservoir.
6. the water-locator that a benzyl chloride contaminated soil remediation as claimed in claim 1 is special, it is characterized in that: described water-locator (10) is the body of taper for one end, is provided with compositional liquor outlet (12) near the body portion of taper one end (11).
7. the water-locator that benzyl chloride contaminated soil remediation as claimed in claim 6 is special, it is characterized in that: described body is pipe, described taper one end (11) is for coniform, and described compositional liquor outlet (12) is positioned on the pipe body of pipe and taper one end (11) junction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510251003.7A CN104858230B (en) | 2015-05-15 | 2015-05-15 | The restorative procedure and special water-locator of a kind of benzyl chloride contaminated soil |
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| CN201510251003.7A CN104858230B (en) | 2015-05-15 | 2015-05-15 | The restorative procedure and special water-locator of a kind of benzyl chloride contaminated soil |
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| CN104858230A true CN104858230A (en) | 2015-08-26 |
| CN104858230B CN104858230B (en) | 2017-10-17 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09174032A (en) * | 1995-12-26 | 1997-07-08 | Hazama Gumi Ltd | Treatment of polluted soil and polluted underground water |
| JPH09225447A (en) * | 1996-02-21 | 1997-09-02 | Hazama Gumi Ltd | Treatment of contaminated soil |
| WO2002094723A1 (en) * | 2001-05-18 | 2002-11-28 | William Kerfoot | Environmental remediation method and apparatus |
| EP1115512B1 (en) * | 1998-05-05 | 2008-04-02 | The University of Connecticut | Chemical oxidation of volatile organic compounds |
| US20100003082A1 (en) * | 2005-10-21 | 2010-01-07 | Colorado School Of Mines | Method and Compositions for Treatment of Subsurface Contaminants |
| CN103495601A (en) * | 2013-09-30 | 2014-01-08 | 苏州绿地土壤修复科技有限公司 | In-situ chemical remediation method of soil |
| CN103752601A (en) * | 2013-12-31 | 2014-04-30 | 北京高能时代环境技术股份有限公司 | Method for remedying organic compound pollution in soil and/or water |
| CN104607456A (en) * | 2014-12-19 | 2015-05-13 | 中国环境科学研究院 | A remediation method for soil polluted by chlorobenzenes |
-
2015
- 2015-05-15 CN CN201510251003.7A patent/CN104858230B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09174032A (en) * | 1995-12-26 | 1997-07-08 | Hazama Gumi Ltd | Treatment of polluted soil and polluted underground water |
| JPH09225447A (en) * | 1996-02-21 | 1997-09-02 | Hazama Gumi Ltd | Treatment of contaminated soil |
| EP1115512B1 (en) * | 1998-05-05 | 2008-04-02 | The University of Connecticut | Chemical oxidation of volatile organic compounds |
| WO2002094723A1 (en) * | 2001-05-18 | 2002-11-28 | William Kerfoot | Environmental remediation method and apparatus |
| US20100003082A1 (en) * | 2005-10-21 | 2010-01-07 | Colorado School Of Mines | Method and Compositions for Treatment of Subsurface Contaminants |
| CN103495601A (en) * | 2013-09-30 | 2014-01-08 | 苏州绿地土壤修复科技有限公司 | In-situ chemical remediation method of soil |
| CN103752601A (en) * | 2013-12-31 | 2014-04-30 | 北京高能时代环境技术股份有限公司 | Method for remedying organic compound pollution in soil and/or water |
| CN104607456A (en) * | 2014-12-19 | 2015-05-13 | 中国环境科学研究院 | A remediation method for soil polluted by chlorobenzenes |
Non-Patent Citations (2)
| Title |
|---|
| 任广军等: "用高锰酸钠氧化法去除水中的苯胺", 《东北大学学报》 * |
| 纪录等: "原位化学氧化法在土壤和地下水修复中的研究进展", 《环境污染治理技术与设备》 * |
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| CN104858230B (en) | 2017-10-17 |
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Address after: 231145, Anhui province Hefei Changfeng County town Wu Gang Village Applicant after: ANHUI HAO YUE ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 231145, Anhui province Hefei Changfeng County town Wu Gang Village Applicant before: HEFEI WUSHAN SOLID WASTE DISPOSAL Co.,Ltd. |
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Address after: 231100 Wushan Town, Changfeng County, Hefei City, Anhui Province Patentee after: Anhui Haoyue Environmental Technology Co.,Ltd. Address before: 231145 Jinggang village, Wushan Town, Changfeng County, Hefei City, Anhui Province Patentee before: ANHUI HAO YUE ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |