EP0842123A1 - Procede pour la decontamination biologique de materiaux contamines - Google Patents

Procede pour la decontamination biologique de materiaux contamines

Info

Publication number
EP0842123A1
EP0842123A1 EP96927524A EP96927524A EP0842123A1 EP 0842123 A1 EP0842123 A1 EP 0842123A1 EP 96927524 A EP96927524 A EP 96927524A EP 96927524 A EP96927524 A EP 96927524A EP 0842123 A1 EP0842123 A1 EP 0842123A1
Authority
EP
European Patent Office
Prior art keywords
contaminated
contaminated material
decontamination
activated sludge
sludge
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Withdrawn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
EP96927524A
Other languages
German (de)
English (en)
Inventor
Helmut Prof. Dipl.-Ing. Hohnecker
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0842123A1 publication Critical patent/EP0842123A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/004—Sludge detoxification
    • 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
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the invention is based on a method for biological decontamination according to the preamble of the main claim and the preamble of claim 3.
  • the contaminated material is cleaned and processed by means of microorganisms, the microorganisms originating from activated sludge of anaerobic and aerobic type and made available by mixing the contaminated material with this activated sludge and, if necessary is treated further.
  • the microorganisms break down the impurities and, if necessary, are increased by added nutrients, supported by stirring, water supply and last but not least aeration.
  • This known method is used primarily in soils contaminated with petroleum products. In such soils there can be some toxic metal compounds which can be in a form accessible to microorganisms and can be bound by the known method.
  • the metals remain in the landfill area of the goods, they are suitable for entering into new toxic compounds.
  • the consistency of the mixture of contaminated material and sewage sludge is chosen so that it maintains the shape.
  • the very broad spectrum of waste or residual materials resulting from sewage sludge or the like activated sludge contains a microorganism flora which can process almost all biodegradable contaminants.
  • the contaminated goods are usually soils contaminated with petroleum products. Others, for example soils contaminated with heavy metals, have to be brought to special landfills, similar to mixed-contaminated soils of industrial or settlement areas, which is not only expensive, but also represents a postponement of the problem of treating such soils.
  • the method according to the invention or the device according to the invention with the characterizing features of the main claim or claim 3 has the advantage that whenever there are biodegradable substances in the soils or residues from settlement areas and industrial areas, for example petroleum-containing substances, these can be broken down via the microorganisms in the sewage sludge, whereby it has been found that other organic pollutants are also processed by the microorganisms. It was surprisingly found that in many apparently non-decontaminable substances by removing the Petroleum product compositions the residual material is no longer regarded as contaminated despite the presence of metals, for example metal chips and the like. Existing metal is also removed from such a residual material before it enters into compounds with other substances, which in turn is considered to be toxic and would then have to be stored in special landfills. The inventive method saves high costs for hazardous waste landfills.
  • industrial grinding sludge serves as the contaminated material.
  • Such grinding sludges are usually highly oil-containing, so that after the oil has been removed via the microorganisms, substances remain which in the case are easy to dispose of or can be recycled. These primarily include the metals separated from oil compounds.
  • the treatment can take place in a closed system which contains an agitator, pump and air supply devices and which are preceded by separating, sorting and classifying devices (for example flotation, Me separator, belts, etc.) .
  • separating, sorting and classifying devices for example flotation, Me separator, belts, etc.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Sludge (AREA)

Abstract

L'invention concerne un procédé pour la décontamination de déchets ou de résidus provenant des zones résidentielles et industrielles, par exemple des boues industrielles. Ces matériaux contenant du métal sont mélangés avec de la boue activée, par exemple de la boue de curage, et le produit de réaction subit un traitement ultérieur, la fraction métallique étant recyclable.
EP96927524A 1995-07-27 1996-07-29 Procede pour la decontamination biologique de materiaux contamines Withdrawn EP0842123A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19527385 1995-07-27
DE19527385 1995-07-27
PCT/DE1996/001406 WO1997005071A1 (fr) 1995-07-27 1996-07-29 Procede pour la decontamination biologique de materiaux contamines

Publications (1)

Publication Number Publication Date
EP0842123A1 true EP0842123A1 (fr) 1998-05-20

Family

ID=7767877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96927524A Withdrawn EP0842123A1 (fr) 1995-07-27 1996-07-29 Procede pour la decontamination biologique de materiaux contamines

Country Status (6)

Country Link
EP (1) EP0842123A1 (fr)
CZ (1) CZ22598A3 (fr)
DE (1) DE19630370A1 (fr)
HU (1) HUP9802370A2 (fr)
PL (1) PL324619A1 (fr)
WO (1) WO1997005071A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2398069B (en) * 2003-02-05 2005-08-31 Hanson Support Services Ltd Treatment of ferrous waste
CN111423095B (zh) * 2020-03-05 2022-04-08 厦门大学 一种处理剩余活性污泥的方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277342A (en) * 1979-10-01 1981-07-07 Cornell Research Foundation, Inc. Combined biological-chemical detoxification of organics
DE3821242A1 (de) * 1988-06-23 1989-12-28 Antonio M Dipl Ing Celi Verfahren und vorrichtung zur aufarbeitung metallbelasteter abfallschlaemme
US5204001A (en) * 1991-10-09 1993-04-20 Zenon Environmental Inc. Membrane bioreactor system for treating synthetic metal-working fluids and oil-based products
DE4339875A1 (de) * 1993-11-23 1995-05-24 Hohnecker Helmut Verfahren zur Reinigung und Aufbereitung von verunreinigtem Gut
WO1996005003A1 (fr) * 1994-08-09 1996-02-22 Hege Terdesan Gmbh & Co. Kg Procede et dispositifs de decontamination de matiere contaminee

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9705071A1 *

Also Published As

Publication number Publication date
WO1997005071A1 (fr) 1997-02-13
HUP9802370A2 (hu) 1999-01-28
PL324619A1 (en) 1998-06-08
CZ22598A3 (cs) 1998-10-14
DE19630370A1 (de) 1997-03-06

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Legal Events

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