CN105057341A - Efficient composite organic polluted soil and underground water oxidation system - Google Patents
Efficient composite organic polluted soil and underground water oxidation system Download PDFInfo
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- CN105057341A CN105057341A CN201510529408.2A CN201510529408A CN105057341A CN 105057341 A CN105057341 A CN 105057341A CN 201510529408 A CN201510529408 A CN 201510529408A CN 105057341 A CN105057341 A CN 105057341A
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- underground water
- polluted soil
- organic polluted
- persulfate
- oxidation system
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Abstract
The invention discloses an efficient composite organic polluted soil and underground water oxidation system which overcomes the defects caused by using Fenton reagents and activated persulfate independently. H2O2 and persulfate are made into composite oxidant according to the mass ratio of 1:1, a proper amount of Fe2+ is supplemented in organic polluted soil and underground water, and accordingly the oxidation system which is composed of the H2O2, the persulfate and the Fe2+ is formed. Heat released in the Fenton reaction process is fully utilized, the activating process of the persulfate is accelerated, and the action range of chemicals in the soil and underground water repairing process is widened. Compared with the mode that the activated persulfate is used for oxidation independently, sulfate ions are reduced, and secondary pollution is alleviated.
Description
technical field:
The present invention relates to field of environment protection, particularly relate to a kind of high efficiency composition organic polluted soil and underground water oxidation system.
background technology:
According to Reference News, the fertility in 110 country (totally 10 hundred million people) arable lands is in reduction.In Africa, Asia and Latin America due to the overgraze in the disappearance of forest cover, the undue exploitation in arable land and pasture, it is very serious that soil degrades situation.Exposed soil becomes fragile, and what cannot resist the elements for a long time degrades.Local at some, the year number of dropouts of soil can reach per hectare 100 tons.Chemical fertilizer and agricultural chemicals excessive use, the toxic dust landing relevant with air pollution, mud sprays everywhere, and dangerous waste material is abandoned everywhere, and in general all these be irreversible pollution forming soil.
Soil refer to top have fertility, can the loose surface layer of growing plant, its thickness is generally at about 2m.Soil not only provides mechanical support ability for plant growth, and can provide the required fertility key element such as water, fertilizer, gas, heat for growth and development of plants.Due to population sharp increase, industrial fast development, solid waste is constantly stacked to soil surface and is toppled over, and harmful waste water constantly permeates in soil, and the pernicious gas in air and floating dust are also continuous to be dropped in soil with rainwater, result in soil pollution.Every obstruction soil normal function, reduces crop yield and quality, also by the material of the remote-effects such as grain, veterinary antibiotics health, is all called soil pollutant.
Fenton reagent and activation persulfate are the oxidating chemicals that soil and groudwater remediation is conventional.Fenton reagent is H
2o
2and Fe
2+a kind of strong oxidizer be mixed to get, its feature reaction rapidly discharges the gentle body of large calorimetric in course of reaction, effective to most organic matter, reaction does not have secondary pollution, shortcoming be affect by pH value larger, general (PH3 ~ 5) in acid condition use, self is unstable, and underground application life is short, causes it in the transmission of underground and distributes all undesirable, likely not yet arrive target location, self to have decomposed and ineffective.Persulfate through light, heat, alkali, transition metal (as Fe
2+) activation, for removing the organic pollution of difficult degradation, under acidity, neutrality, alkali condition, all there is strong oxidizing property, its shortcoming is that activation persulfate oxidation is not thorough, the required reaction time is also longer, generates a large amount of sulfate ions and cause secondary pollution to underground water after excessive activation persulfate reaction
summary of the invention:
In order to solve the problem, the invention provides one and utilizing Fenton reagent (H
2o
2and Fe
2+) take the lead in producing hydroxyl free radical, in degraded soil and groundwater while organic pollution, produce a large amount of heats, persulfate is at heat and Fe
2+exciting under, generate potentiometric titrations, further the technical scheme of organic pollution in degraded soil and groundwater:
A kind of high efficiency composition organic polluted soil and underground water oxidation system, comprise the following steps:
(1) conveniently Fenton reagent adds and mixes with H simultaneously by step in organic polluted soil and underground water
2o
2and Fe
2sO
47H
2o solution, regulate reaction temperature, adopt hydrochloric acid and sodium hydroxide solution to regulate the initial pH of organic polluted soil and underground water, after 25 ~ 40min, add the sodium hydroxide solution of 0.1mon/l, react remaining iron and ferrous ion formation ferric hydroxide precipitate, oxidation reaction stops;
(2) by H
2o
2make the composite oxidant of 1:1 in mass ratio with persulfate, in organic polluted soil and underground water, supplement appropriate Fe
2+, form by H
2o
2,persulfate and Fe
2+the oxidation system of composition.
As preferably, in step (1), Fenton reagent is made up of iron content inorfil, iron content inorfil carries out heating after carrying out fragmentation by the slag of nonferrous ore and the combination of high-grad iron ore deposit or the ore of iron content or iron content makes its high-temperature fusion form melt, is drawn into continuous fiber or makes short fiber by high speed centrifugation through bushing.
As preferably, in step (1), Fenton reagent configuration is than being H
2o
2,: Fe
2+=1 ~ 1.5:3 ~ 5.5.
Beneficial effect of the present invention is:
(1) this patent overcomes the defect being used alone Fenton reagent and activation persulfate, take full advantage of the heat discharged in Fenton's reaction process, accelerate the activation process of persulfate, increase the sphere of action of soil and groudwater remediation process Chinese medicine, relatively be used alone the oxidation of activation overcurrent hydrochlorate, decrease the generation of sulfate ion, alleviate secondary pollution.
(1) in the present invention, Fenton reagent is made up of iron content inorfil, and iron content inorfil carrier specific area is large, and reactivity is high, iron does not exist only in fiber surface, and be present in fibrous inside, be exactly that iron content inorfil can use repeatedly like this, effectively can delay the recovery time.
detailed description of the invention:
For making goal of the invention of the present invention, technical scheme and advantage clearly, will be described in further detail embodiments of the present invention below.
High efficiency composition organic polluted soil and underground water oxidation system, comprise the following steps:
(1) conveniently Fenton reagent adds and mixes with H simultaneously by step in organic polluted soil and underground water
2o
2and Fe
2sO
47H
2o solution, regulate reaction temperature, hydrochloric acid and sodium hydroxide solution is adopted to regulate the initial pH of organic polluted soil and underground water, the sodium hydroxide solution of 0.1mon/l is added after 25 ~ 40min, react remaining iron and ferrous ion formation ferric hydroxide precipitate, oxidation reaction stops, Fenton reagent is wherein made up of iron content inorfil, iron content inorfil carries out heating after carrying out fragmentation by the slag of nonferrous ore and the combination of high-grad iron ore deposit or the ore of iron content or iron content makes its high-temperature fusion form melt, be drawn into continuous fiber through bushing or make short fiber by high speed centrifugation.Fenton reagent configuration is than being H
2o
2,: Fe
2+=1 ~ 1.5:3 ~ 5.5.
(2) by H
2o
2make the composite oxidant of 1:1 in mass ratio with persulfate, in organic polluted soil and underground water, supplement appropriate Fe
2+, form by H
2o
2,persulfate and Fe
2+the oxidation system of composition.
Embodiment
To remove certain place polycyclic aromatic hydrocarbon:
Wherein how: 12.5mg/kg; Benzanthracene (a) 20.8mg/kg; Benzo (b) fluoranthene 19.4mg/kg; Benzo (a) pyrene 17.0mg/kg.
Fenton reagent: 2%, 5%, 10% dosage, the average removal rate of pollutant is respectively 47.7%, 48.0%, 57.1%;
Alkali activation persulfate: 5% dosage, average removal rate 69.3%;
Fenton persulfate system: dosage 2%, 3%, 5%, average removal rate 80.7%, 85.2%, 91%
The oxidizing potential of high efficiency composition organic polluted soil and underground water oxidation system is higher than persulfate as can be seen here, Fenton reagent (H
2o
2and Fe
2+) take the lead in producing hydroxyl free radical, in degraded soil and groundwater while organic pollution, produce a large amount of heats, persulfate is at heat and Fe
2+exciting under, generate potentiometric titrations, further organic pollution in degraded soil and groundwater.
Above-described embodiment is preferred embodiment of the present invention; it is not the restriction to technical solution of the present invention; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of patent of the present invention.
Claims (3)
1. high efficiency composition organic polluted soil and a underground water oxidation system, is characterized in that: comprise the following steps:
(1), conveniently Fenton reagent adds and mixes with H simultaneously by step in organic polluted soil and underground water
2o
2and Fe
2sO
47H
2o solution, regulate reaction temperature, adopt hydrochloric acid and sodium hydroxide solution to regulate the initial pH of organic polluted soil and underground water, after 25 ~ 40min, add the sodium hydroxide solution of 0.1mon/l, react remaining iron and ferrous ion formation ferric hydroxide precipitate, oxidation reaction stops;
(2), by H
2o
2make the composite oxidant of 1:1 in mass ratio with persulfate, in organic polluted soil and underground water, supplement appropriate Fe
2+, form by H
2o
2,persulfate and Fe
2+the oxidation system of composition.
2. a kind of high efficiency composition organic polluted soil according to claim 1 and underground water oxidation system, it is characterized in that: in described step (1), Fenton reagent is made up of iron content inorfil, described iron content inorfil carries out heating after carrying out fragmentation by the slag of nonferrous ore and the combination of high-grad iron ore deposit or the ore of iron content or iron content makes its high-temperature fusion form melt, is drawn into continuous fiber or makes short fiber by high speed centrifugation through bushing.
3. a kind of high efficiency composition organic polluted soil according to claim 1 and underground water oxidation system, is characterized in that: in described step (1), Fenton reagent configuration is than being H
2o
2,: Fe
2+=1 ~ 1.5:3 ~ 5.5.
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|---|---|---|---|
| CN201510529408.2A CN105057341A (en) | 2015-08-26 | 2015-08-26 | Efficient composite organic polluted soil and underground water oxidation system |
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| CN201510529408.2A CN105057341A (en) | 2015-08-26 | 2015-08-26 | Efficient composite organic polluted soil and underground water oxidation system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855286A (en) * | 2016-04-05 | 2016-08-17 | 南京农业大学 | Oxidation removing method for polycyclic aromatic hydrocarbon in soil through Fenton reagent bag |
| CN106623405A (en) * | 2016-12-22 | 2017-05-10 | 常州大学 | Method for remediation of benzene hexachloride contaminated soil by Fe (II) / CaO2 |
| CN106670228A (en) * | 2016-12-15 | 2017-05-17 | 南开大学 | Method for remedying polybrominated diphenyl ethers-polluted soil through surface active agent reinforced tourmaline Fenton-like associated microorganisms |
| CN106670222A (en) * | 2016-12-22 | 2017-05-17 | 常州大学 | Method for treating organochlorine-pesticide-contaminated soil through activated persulfate oxidization |
| 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 |
| CN108160693A (en) * | 2017-12-26 | 2018-06-15 | 北京宜为凯姆环境技术有限公司 | For the persulfate combined heat activation method of environment remediation |
| CN108405592A (en) * | 2018-01-30 | 2018-08-17 | 南京师范大学 | A method of utilizing magnetic iron-based spinel structure material while repairing organic and mercury contaminated soil |
| CN111687192A (en) * | 2019-03-15 | 2020-09-22 | 中国石油化工股份有限公司 | Heavy metal and organic matter combined contaminated soil remediation method |
| CN113617816A (en) * | 2020-05-08 | 2021-11-09 | 无锡蓝湾资源再生科技有限公司 | Soil remediation method |
| CN115634917A (en) * | 2022-09-09 | 2023-01-24 | 江苏省环境科学研究院 | Method for restoring dye-contaminated soil |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310565A (en) * | 2014-10-15 | 2015-01-28 | 济南大学 | Method of treating organic wastewater based on Fenton-like reaction of iron-based organic-framework material |
-
2015
- 2015-08-26 CN CN201510529408.2A patent/CN105057341A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104310565A (en) * | 2014-10-15 | 2015-01-28 | 济南大学 | Method of treating organic wastewater based on Fenton-like reaction of iron-based organic-framework material |
Non-Patent Citations (2)
| Title |
|---|
| 李梦姣等: "菱铁矿催化过氧化氢-过硫酸钠修复地下水中1，2-二氯乙烷污染", 《环境工程学报》 * |
| 马丽华等: "Fe2+催化H2O2、S2O82--H2O2 降解橙黄G", 《化工进展》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855286A (en) * | 2016-04-05 | 2016-08-17 | 南京农业大学 | Oxidation removing method for polycyclic aromatic hydrocarbon in soil through Fenton reagent bag |
| CN106670228A (en) * | 2016-12-15 | 2017-05-17 | 南开大学 | Method for remedying polybrominated diphenyl ethers-polluted soil through surface active agent reinforced tourmaline Fenton-like associated microorganisms |
| CN106623405A (en) * | 2016-12-22 | 2017-05-10 | 常州大学 | Method for remediation of benzene hexachloride contaminated soil by Fe (II) / CaO2 |
| CN106670222A (en) * | 2016-12-22 | 2017-05-17 | 常州大学 | Method for treating organochlorine-pesticide-contaminated soil through activated persulfate oxidization |
| 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 |
| CN108160693A (en) * | 2017-12-26 | 2018-06-15 | 北京宜为凯姆环境技术有限公司 | For the persulfate combined heat activation method of environment remediation |
| CN108405592A (en) * | 2018-01-30 | 2018-08-17 | 南京师范大学 | A method of utilizing magnetic iron-based spinel structure material while repairing organic and mercury contaminated soil |
| CN111687192A (en) * | 2019-03-15 | 2020-09-22 | 中国石油化工股份有限公司 | Heavy metal and organic matter combined contaminated soil remediation method |
| CN113617816A (en) * | 2020-05-08 | 2021-11-09 | 无锡蓝湾资源再生科技有限公司 | Soil remediation method |
| CN115634917A (en) * | 2022-09-09 | 2023-01-24 | 江苏省环境科学研究院 | Method for restoring dye-contaminated soil |
| CN115634917B (en) * | 2022-09-09 | 2023-11-14 | 江苏省环境科学研究院 | Restoration method for dye-contaminated soil |
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Application publication date: 20151118 |
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