EP2188070A2 - Verfahren zur biologischen sanierung von kontaminiertem boden und/oder wasser infolge organischer und/oder anorganischer verbindungen - Google Patents

Verfahren zur biologischen sanierung von kontaminiertem boden und/oder wasser infolge organischer und/oder anorganischer verbindungen

Info

Publication number
EP2188070A2
EP2188070A2 EP08806974A EP08806974A EP2188070A2 EP 2188070 A2 EP2188070 A2 EP 2188070A2 EP 08806974 A EP08806974 A EP 08806974A EP 08806974 A EP08806974 A EP 08806974A EP 2188070 A2 EP2188070 A2 EP 2188070A2
Authority
EP
European Patent Office
Prior art keywords
contaminated
bioremediation
soil
organic
natural substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08806974A
Other languages
English (en)
French (fr)
Inventor
André Fabricio PARANHOS TORRES
José Carlos MORETTI
Ronaldo Do Nascimento
Rosmary De Nadai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rhodia Poliamida e Especialidades Ltda
Original Assignee
Rhodia Poliamida e Especialidades Ltda
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rhodia Poliamida e Especialidades Ltda filed Critical Rhodia Poliamida e Especialidades Ltda
Publication of EP2188070A2 publication Critical patent/EP2188070A2/de
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
    • B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/006—Regulation methods for biological treatment

Definitions

  • the present invention relates to a method relating to the bioremediation of soils contaminated with organic and / or inorganic compounds comprising the addition to the contaminated soil of a natural substrate containing nutrients, the anaerobic rest of said soil with control of the potential of oxidation, moisture content of the field capacity and temperature, and aeration of these.
  • the invention also includes the method of bioremediation of surface or ground water contaminated with organic and / or inorganic compounds, as well as the method of bioremediation of contaminated soils, since the natural substrate containing nutrients added to said soils reaches the aquifer. phreatic and / or aquifer contaminated by organic and / or inorganic compounds leading to the bioremediation of these waters.
  • Aromatic and non-aromatic hydrocarbons and heavy metals are harmful to human health and the environment. Because of this, various regulations have been established for preventive or corrective purposes. Thus, the demand for decontamination or bioremediation of these environments is increasing.
  • the present invention is based on the biodegradation technique in which the organic and / or inorganic, organohalogenated and / or heavy metal compounds present in the samples of residues, soils and / or contaminated waters are bioconverted into harmless compounds.
  • soil used here in a generic way, includes structures sandy, clay, rock and combinations, as well as sediment and sludge.
  • Such a method can be applied, in particular, to contaminated soils and / or waters, including petroleum residues, such as oils, greases, total petroleum hydrocarbons (TPH), aromatic and nonaromatic hydrocarbons in general, residues containing metals. heavy residues, residues containing agrotoxics and pesticides in general and residues containing organohalogen compounds.
  • petroleum residues such as oils, greases, total petroleum hydrocarbons (TPH), aromatic and nonaromatic hydrocarbons in general, residues containing metals.
  • Such a process can in particular be used for the bioremediation of the following organochlorine compounds: Hexachlorobenzene; 1,2,3,4
  • the process according to the invention allows the application of bioremediation to the soil and / or contaminated water without presenting the disadvantages of the known processes.
  • the present invention allows the decontamination of soils and / or waters contaminated with extremely stable, persistent and recalcitrant organic and inorganic compounds, such as hexachlorobenzene, chlorophenols, polychlorinated biphenyls (PCBs), lindane, benzene and hexavalent chromium. .
  • organic and inorganic compounds such as hexachlorobenzene, chlorophenols, polychlorinated biphenyls (PCBs), lindane, benzene and hexavalent chromium.
  • Another advantage of this process is the ability to treat contaminated soils and / or waters with high amounts of organic and / or inorganic substances.
  • Yet another advantage of said method is that, the degradation half-life of said contaminants being low, it can be, then, be applied in different places and scales.
  • the bioremediation process is based on the biodegradation technique whereby soil and / or water contaminants are bioconverted to harmless compounds, in degradation half-life times significantly lower than the values referenced in FIG. the specialized literature and in the prior art.
  • the present invention is thus feasible both technically and economically for the treatment of large quantities of soil and / or contaminated water.
  • microorganisms useful in the process according to the present invention include microorganisms, namely aerobic, anaerobic and facultative indigenous microorganisms. These micro-organisms are known by the technicians, who can be consulted in different Collections of Type Cultures.
  • microorganisms when stimulated under the conditions of the process according to the present invention, multiply rapidly, resulting in a reduced bioconversion time. Furthermore, the process according to the present invention is extremely advantageous, causing degradation and / or transformation of organic and / or inorganic compounds present in the contaminated soil and / or water at acceptable environmental levels.
  • the present invention relates to a contaminated soil bioremediation process comprising at least the following steps:
  • the method comprises the alternation between one or more cycles of anaerobic and / or aerobic treatment, that is to say several cycles comprising at least steps (a) to (c), or only steps (b) and (vs).
  • the process comprises a natural substrate containing nutrients comprising substances of plant and / or animal origin.
  • the process in question comprises a natural substrate containing plant-derived nutrients including splinters, pieces and / or remnants of wood, sawdust, sugarcane bagasse, vegetation remains and / or vegetable cakes.
  • the method includes a natural substrate containing 30 animal nutrients comprising sludge and / or manure from animals, such as cattle manure, of collars and volatile, including chicken droppings, fresh or not .
  • the method comprises a natural substrate containing nutrients that can be added to the contaminated soils in solid and / or liquid form. Even more particularly, the method comprises a natural substrate containing nutrients of animal origin, comprising sludge and / or animal manure, added to the soil in solid form.
  • the method comprises a natural substrate containing nutrients of animal origin, including sludge and / or animal manure, added to the soil in liquid form.
  • the process comprises a natural substrate containing nutrients of animal origin, comprising sludge and / or animal manure, added to the soil in solid and / or liquid form.
  • the process can be carried out in situ and / or ex situ.
  • the contaminated soil bioremediation process comprising a natural substrate containing nutrients added to said soil, reaches the water table and / or aquifer contaminated with organic and / or inorganic compounds, resulting in the bioremediation of these waters.
  • the process for bioremediation of surface or groundwater contaminated with organic substances comprises the direct or indirect addition to said waters of a natural substrate containing nutrients comprising substances of plant and / or animal origin.
  • the process for bioremediation of surface or underground water comprises the direct or indirect addition to said waters of a natural substrate containing nutrients comprising substances of animal origin.
  • the method of bioremediation of surface or underground water comprises the direct or indirect addition to said waters of a natural substrate containing nutrients comprising substances of animal origin such as sludge and / or animal manure.
  • the method for bioremediation of surface or underground water comprises the addition to said waters of a natural substrate. containing nutrients containing substances of animal and / or plant origin in solid and / or liquid form.
  • the contaminated soil bioremediation process comprises a mixture of natural substrate containing nutrients added to the contaminated soil, in a proportion of approximately 5% to 95%, by weight of contaminated soil.
  • the contaminated soil bioremediation process comprises a mixture of natural substrate containing nutrients added to the contaminated soil, in a proportion of approximately 30% to 70% by weight of contaminated soil.
  • the bioremediation process comprises the addition of a nitrogen source.
  • the bioremediation process comprises a nitrogen source comprising organic and / or inorganic nitrogen.
  • the bioremediation process comprises inorganic nitrogen comprising ammonium nitrate, ammonium sulphate, ammoniacal nitrogen, nitrite and / or their mixtures.
  • the bioremediation process comprises the additional addition of micronutrients, macronutrients and / or aditifs.
  • the bioremediation process comprises additives comprising acids, oxides, peroxides, surfactants, surfactants and / or alkaline substances.
  • the contaminated soil bioremediation process comprises an anaerobic resting step being performed, with a redox potential of less than approximately - 50 mV.
  • the bioremediation process considers a pH of approximately between 2 and 12. More preferably, the bioremediation process considers a pH of approximately 7 to 10.
  • the bioremediation process considers a pH obtained by addition of calcium carbonate, dolomitic limestone and / or rock phosphate.
  • the bioremediation process comprises a further addition of microorganisms.
  • the process for bioremediation of contaminated water and / or soil comprises, as organic contaminants, organohalogen compounds.
  • the process for bioremediation of contaminated water and / or soil comprises, as contaminants, oxyhalogen compounds and / or heavy metals and / or their complexes and / or their salts and / or their mixtures.
  • said invention also comprises a natural substrate in liquid and / or solid form containing nutrients comprising substances of plant and / or animal origin.
  • the invention in question comprises the use of said substrate in a process for bioremediation of water and / or soil contaminated with organic and / or inorganic compounds.
  • the invention relates to the composition containing a substrate of animal and / or plant origin in liquid and / or solid form comprising nutrients for use in the method of bioremediation of waters and / or soils contaminated with organic compounds. and / or inorganic.
  • the invention relates to the composition in liquid and / or solid form containing a substrate of animal and / or plant origin containing nutrients for use in the method of bioremediation of water and / or soil contaminated with organic and / or inorganic compounds.
  • the invention in question relates to the composition in liquid and / or solid form comprising a substrate of animal and / or plant origin containing nutrients for use in the method of bioremediation of water and / or soil contaminated with organic and / or inorganic compounds.
  • the method according to the present invention further comprises the addition of a source of nitrogen to the soil and / or water to be treated.
  • nitrogen source is meant, according to the present invention, mineral nitrogen.
  • said nitrogen source may be one of the following: ammonium nitrate, ammonium sulfate, ammoniacal nitrogen, nitrite and mixtures thereof.
  • the additional addition of nitrogen source can be realized when it is desired to rapidly reduce the content of organic and / or inorganic soil and / or water, that is to say, the method becomes even faster due accelerated bioconversion of organic and / or inorganic matter.
  • micronutrients and / or macronutrients and / or additives there is an additional addition of micronutrients and / or macronutrients and / or additives, to make the contaminants more available to the degradation carried out by the microorganisms.
  • additives mention may be made of: acids, oxides, peroxides, surfactants, surfactants and alkaline substances.
  • the method according to the present invention for soils, further comprises an anaerobic resting step, this being understood as the degradation of organic and / or inorganic contaminants under anaerobic conditions.
  • the favorable conditions for the development of the indigenous microorganisms to effect the degradation of the organic and / or inorganic fraction in the process according to the present invention comprise, inter alia, the control of the parameters of temperature, oxidation-reduction potential, moisture content and pH.
  • the oxidation-reduction potential should reach a value of less than approximately 0 mV, preferably less than -50 mV, until the substantial degradation of the contaminants has occurred.
  • the maintenance of the redox potential at the values indicated is particularly advantageous for the efficient practice of the process according to the present invention.
  • the redox potential can be maintained by the addition of reducing agents, such as organic acids and / or their salts.
  • the moisture content must be adjusted according to the soil to be bioremediate, that is to say, it depends on the water holding capacity (CRA) of said soil.
  • CRA water holding capacity
  • the water content must be advantageously adjusted so as to obtain a wet mixture without being considerably pasty.
  • the moisture content is between approximately 20% and 100% of the field capacity.
  • water or leachate or percolation liquids can be added to adjust the moisture content.
  • pH In relation to pH, more suitable values are between approximately 7 and 10. Such pH values can be adjusted by means of pH corrections known to the technician.
  • these substances include buffering and neutralizing agents.
  • the pH is obtained by addition of calcium carbonate, dolomite limestone, rock phosphate or a mixture thereof.
  • the aeration step according to the present invention can be carried out by any suitable method including mechanical and / or physical agents.
  • suitable method including mechanical and / or physical agents.
  • the bioremediation process according to the present invention comprises one or more anaerobic-aerobic cycles, until the decontamination is complete.
  • said decontamination is achieved through cycles with duration between 1 week and 5 months.
  • the anaerobic stage has a duration between 1 and 3 months and the aerobic stage has a duration between 2 weeks and 1 month.
  • the bioremediation process according to the present invention comprises the additional addition of anaerobic microorganisms.
  • said additional microorganisms include any microorganism known to the technician in the field, native or non-native to be bioremedied.
  • the natural organic substrate is added, consisting of chicken droppings and sawdust, in the proportions mentioned in Table 1, and the homogenization of the mixture carried out, under appropriate reaction conditions of moisture content, pH and aeration, resulting in a favorable oxidation-reduction potential, although the development of indigenous microorganisms.
  • the oxidation-reduction potential has reached values above 50 mV, keeping the field water holding capacity of the mixture between approximately 40% and 65%.
  • the field water holding capacity of the mixture was maintained between approximately 40% and 70%; the redox potential of less than 0 mV and the temperature of between approximately 20 ° C. and 70 ° C.
  • a treatment cell 400 kg of contaminated soil of 2% organochlorines, mainly hexachlorobenzene (HCB), and natural organic substrate consisting of chicken thread and sawdust were added in the proportion 20% w / w. Then, the homogenization of the mixture was carried out in the own cell and a temperature measuring probe was installed for monitoring the biological activity of the process.
  • organochlorines mainly hexachlorobenzene (HCB)
  • natural organic substrate consisting of chicken thread and sawdust
  • the cell was closed for the beginning of the anaerobic stage.
  • others followed, alternating anaerobic / aerobic cycles, with additional addition of organic substrate, if necessary, based on analytical monitoring of the samples taken, in order to maintain adequate degradation conditions.
  • Organic organic made of chicken leaven and sawdust.
  • Example 3 carried out in situ, tests were carried out to verify the impact on the degradation of organochlorine compounds present in the contaminated water table under the cells, over an area of approximately 2,000 m 2 , due to percolation of the natural organic substrate in liquid form.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Mycology (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Health & Medical Sciences (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Botany (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
EP08806974A 2007-09-05 2008-08-28 Verfahren zur biologischen sanierung von kontaminiertem boden und/oder wasser infolge organischer und/oder anorganischer verbindungen Withdrawn EP2188070A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI0705607-9A BRPI0705607A2 (pt) 2007-09-05 2007-09-05 processo de bioremediação de solos e/ou águas contaminados por compostos orgánicos e/ou inorgánicos
PCT/IB2008/002278 WO2009031004A2 (fr) 2007-09-05 2008-08-28 Procédé de bioremédiation de sols et/ou d'eaux contaminés par des composés organiques et/ou inorganiques

Publications (1)

Publication Number Publication Date
EP2188070A2 true EP2188070A2 (de) 2010-05-26

Family

ID=40349445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08806974A Withdrawn EP2188070A2 (de) 2007-09-05 2008-08-28 Verfahren zur biologischen sanierung von kontaminiertem boden und/oder wasser infolge organischer und/oder anorganischer verbindungen

Country Status (7)

Country Link
US (1) US20120014750A1 (de)
EP (1) EP2188070A2 (de)
KR (1) KR20100066540A (de)
CN (1) CN101808757A (de)
BR (2) BRPI0705607A2 (de)
CA (1) CA2698496A1 (de)
WO (1) WO2009031004A2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6155773B2 (ja) * 2013-04-02 2017-07-05 株式会社大林組 地盤浄化方法
CN103521512A (zh) * 2013-10-16 2014-01-22 中国地质科学院水文地质环境地质研究所 修复含铅镉土壤的海泡石-壳聚糖复合材料及其制备方法
CN104941996B (zh) * 2015-06-09 2017-12-19 北京市环境保护科学研究院 一种针对铬污染土壤的修复方法
CN104941995B (zh) * 2015-06-09 2018-01-19 北京市环境保护科学研究院 一种针对铬污染土壤的修复方法
KR102018524B1 (ko) 2018-09-21 2019-09-05 주식회사 효림 지중 오염물질의 호기성 및 혐기성 미생물에 의한 현장생물학적 정화 및 모니터링 시스템
US10901117B2 (en) * 2018-10-15 2021-01-26 Colorado State University Research Foundation Devices and methods for measuring temperature, oxidation reduction potential, and water-level within a subsurface formation
CN109292974B (zh) * 2018-12-10 2022-03-29 北京博诚立新环境科技股份有限公司 一种地下水和含水层土壤原位厌氧生物修复方法
CN109821888A (zh) * 2019-01-25 2019-05-31 北京博诚立新环境科技股份有限公司 一种包气带污染土壤原位生物修复方法
CN111702005A (zh) * 2020-06-15 2020-09-25 中山大学 一种原位修复含有机卤代物土壤的方法
GB2598382A (en) * 2020-08-28 2022-03-02 Epiq Env Ltd Micro-mechanical augmented bioremediation method for treatment of oil contaminated soil
CN113305146B (zh) * 2021-06-22 2022-04-08 中国科学院沈阳应用生态研究所 一种有机污染土壤生物修复装置及其应用
CN114019007B (zh) * 2021-11-04 2024-01-12 中国能源建设集团江苏省电力设计院有限公司 一种有机污染物浓度测定系统及方法
CN114798716A (zh) * 2022-04-07 2022-07-29 中国科学院南京土壤研究所 一种耦合厌氧/好氧过程的多氯联苯污染农田土壤的植物修复方法
WO2025178940A1 (en) * 2024-02-19 2025-08-28 Demarey David Method for improving nitrogen absorption in plants

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US5100455A (en) * 1990-06-29 1992-03-31 Pinckard Joseph A Process for bioremediation of soils
FR2695139A1 (fr) * 1992-08-31 1994-03-04 Elf Aquitaine Nouvel additif de biodégradation à base de farine animale et son utilisation pour la dépollution.
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Also Published As

Publication number Publication date
CA2698496A1 (fr) 2009-03-12
WO2009031004A2 (fr) 2009-03-12
BRPI0815529A2 (pt) 2015-02-03
KR20100066540A (ko) 2010-06-17
WO2009031004A3 (fr) 2009-04-30
CN101808757A (zh) 2010-08-18
BRPI0705607A2 (pt) 2009-05-05
US20120014750A1 (en) 2012-01-19

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