DE3905133A1 - Process for removing readily volatile constituents from soils - Google Patents
Process for removing readily volatile constituents from soilsInfo
- Publication number
- DE3905133A1 DE3905133A1 DE19893905133 DE3905133A DE3905133A1 DE 3905133 A1 DE3905133 A1 DE 3905133A1 DE 19893905133 DE19893905133 DE 19893905133 DE 3905133 A DE3905133 A DE 3905133A DE 3905133 A1 DE3905133 A1 DE 3905133A1
- Authority
- DE
- Germany
- Prior art keywords
- air
- volatile constituents
- loosening
- soil
- soils
- 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- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/005—Extraction of vapours or gases using vacuum or venting
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Treating Waste Gases (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Entfernung leichtflüchtiger Bestandteile aus Böden.The invention relates to a method for removing volatile Ingredients from soils.
Der unsachgemäße Umgang mit umweltgefährdenden Stoffen hat eine große Zahl von Grundwasser- und Bodenverunreinigungen verursacht. Diese Alt lasten müssen saniert werden. Ein nicht unerheblicher Teil der umwelt gefährdenden Stoffe sind leichtflüchtig (z.B. chlorierte und aromatische Kohlenwasserstoffe).The improper handling of environmentally hazardous substances has a major impact Number of groundwater and soil contaminants caused. This old loads have to be renovated. A significant part of the environment hazardous substances are volatile (e.g. chlorinated and aromatic Hydrocarbons).
Zur Sanierung sind diverse Verfahren bekannt. Leichtflüchtige Schadstof fe können u.a. verbrannt oder biologisch entweder insitu oder on-site in Mieten abgebaut werden. Eine umweltverträgliche Verbrennung ist sehr ko stenintensiv, da hohe Verbrennungstemperaturen benötigt werden.Various methods are known for renovation. Volatile pollutant fe can i.a. burned or biological either in situ or on-site in Rents are reduced. Environmentally friendly combustion is very unlikely very intensive because high combustion temperatures are required.
Die biologische Bodenreinigung ist andererseits nur beschränkt einsetz bar. Nur biologisch abbaubare Schadstoffe bis zu einer gewissen Konzen tration können mit diesen Verfahren erfolgreich behandelt werden. Zudem ist die Dauer der Behandlung relativ lang.On the other hand, biological soil cleaning is only used to a limited extent bar. Only biodegradable pollutants up to a certain concentration tration can be successfully treated with these procedures. In addition the duration of treatment is relatively long.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren so zu bilden, daß die Entfernung von leichtflüchtigen Bestandteilen aus größeren Men gen Böden kostengünstig, effektiv aber dennoch umweltschonend ist. Diese Aufgabe wird bei dem gattungsgemäßen Verfahren durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst.The invention has for its object to form a method so that the removal of volatile components from larger men flooring is inexpensive, effective but nonetheless environmentally friendly. These Task is in the generic method by the characterizing Features of claim 1 solved.
Die mit diesem Verfahren erzielbaren Vorteile bestehen insbesondere da rin, daß die leichtflüchtigen Bestandteile ohne hohen Energieaufwand und ohne eine hohe Verdunstung und damit eine Verfrachtung der Schadstoffe in die Atmosphäre aus dem Boden entfernt werden können. Die Abluft wird in einer mehrstufigen Anlage gereinigt und die an die Atmosphäre gelan gende Luft stellt keine neue Umweltbelastung dar.The advantages that can be achieved with this method are in particular there rin that the volatile components without high energy expenditure and without high evaporation and thus a removal of the pollutants can be removed from the ground into the atmosphere. The exhaust air is cleaned in a multi-stage system and which got into the atmosphere air does not represent a new environmental pollution.
Anhand zweier Ausführungsbeispiele wird die Erfindung in den Zeichnungen dargestellt und im folgenden näher beschrieben. Es zeigt:Using two exemplary embodiments, the invention is shown in the drawings shown and described in more detail below. It shows:
Fig. 1 in schematischer Darstellung einen Verfahrensablauf. Fig. 1 in a schematic representation of a process flow.
Fig. 2 in schematischer Darstellung einen weiteren Verfahrensablauf. Fig. 2 shows a further process flow in a schematic representation.
In Fig. 1 wird der ausgehobene Boden 1 in einer eingekapselten Vorrich tung 4 zerkleinert und mittels einem Förderband 3 über eine Wäge- und Dosiereinrichtung 5 einem Mischer 6.1 zugeführt. Im Mischer 6.1 wird der Boden aufgelockert und mittels angesaugter Frischluft 6 belüftet.In Fig. 1, the excavated soil 1 is crushed in an encapsulated Vorrich device 4 and fed to a mixer 6.1 by means of a conveyor belt 3 via a weighing and metering device 5 . In the mixer 6.1 , the soil is loosened and aerated by means of fresh air 6 drawn in .
Die leichtflüchtigen Bestandteile gehen in die angesaugte Frischluft 7 über, wobei diese bei Bedarf in einer Vorrichtung 8 vorgewärmt wird, um den Stripeffekt der Luft zu erhöhen.The volatile constituents pass into the sucked-in fresh air 7 , which is preheated if necessary in a device 8 in order to increase the stripping effect of the air.
Die angereicherte Luft 7 zusammen mit der Luft aus den eingekapselten Vorbehandlungsvorrichtungen werden mittels einem durch einen Ventilator erzeugten Unterdruck in einer Reinigungsstufe 9, bestehend aus Staubab scheidung 10, Lufttrocknung 12, Lufterwärmung 13 und Aktivkohleadsorp tion 14 gereinigt.The enriched air 7 together with the air from the encapsulated pretreatment devices are cleaned by means of a negative pressure generated by a fan in a cleaning stage 9 , consisting of dust separation 10 , air drying 12 , air heating 13 and activated carbon adsorption 14 .
Die Lufttrocknung 12 und die Lufterwärmung 13 bestehen im dargestellten Beispiel aus einem Kondensator 12 und einem Ablufterwärmer 13. Das Kon densat 12.2 wird in einer Anlage gereinigt. Diese Maßnahmen führen zur Einhaltung der optimalen Betriebsparameter der nachfolgenden Aktivkohle adsorption 14.In the example shown, the air drying 12 and the air heating 13 consist of a condenser 12 and an exhaust air heater 13 . The condensate 12.2 is cleaned in a system. These measures lead to compliance with the optimal operating parameters of the subsequent activated carbon adsorption 14 .
In Fig. 2 wird eine weitere Ausführungsform der Erfindung dargestellt.In FIG. 2, a further embodiment of the invention is illustrated.
Anstelle eines Mischers 6.1 wird eine Drehtrommel 6.2 zur Auflockerung 6 des Bodens 1 eingesetzt. Die angesaugte und bei Bedarf auch vorgewärmte Frischluft 7 wird im Gegenstrom durch die Drehtrommel 6.2 geführt. Diese Luft 7 zusammen mit der Luft aus den eingekapselten Vorbehandlungsvor richtungen wird auch mittels Unterdruck in einer Reinigungsstufe 9 be stehend aus einer Staubabscheidung 10 und einer Aktivkohleadsorption 14 gereinigt. Die Staubabscheidung 10 besteht in diesem Besipiel aus einem Zyklon 4.1 und einem nachgestalteten Schlauchfilter 4.2 Instead of a mixer 6.1 , a rotary drum 6.2 is used to loosen 6 the soil 1 . The fresh air 7 drawn in and, if necessary, also preheated is conducted in counterflow through the rotary drum 6.2 . This air 7 together with the air from the encapsulated pretreatment devices is also cleaned by means of negative pressure in a cleaning stage 9 from a dust separation 10 and an activated carbon adsorption 14 . The dust separation 10 in this example consists of a cyclone 4.1 and a re-designed bag filter 4.2
Bei dieser Ausführungsform wird der angesammelte Staub 11 aus der Staub abscheidung 10 mit dem Boden 1 nach Austritt aus der Drehtrommel 6.2 in einer Vorrichtung 16 mit Wasser vermischt.In this embodiment, the accumulated dust 11 from the dust separation 10 is mixed with the bottom 1 after exiting the rotary drum 6.2 in a device 16 with water.
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19893905133 DE3905133A1 (en) | 1988-05-26 | 1989-02-20 | Process for removing readily volatile constituents from soils |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3817837 | 1988-05-26 | ||
DE19893905133 DE3905133A1 (en) | 1988-05-26 | 1989-02-20 | Process for removing readily volatile constituents from soils |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3905133A1 true DE3905133A1 (en) | 1989-11-30 |
Family
ID=25868452
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19893905133 Withdrawn DE3905133A1 (en) | 1988-05-26 | 1989-02-20 | Process for removing readily volatile constituents from soils |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3905133A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0405067A2 (en) * | 1989-06-30 | 1991-01-02 | LEONHARD WEISS GmbH & Co. NIEDERLASSUNG CRAILSHEIM | Device for removing volatile contaminants from soil or similar |
DE4119149A1 (en) * | 1991-03-22 | 1992-11-05 | Hak Anlagenbau Gmbh Fuer Verfa | Gas purged desorption for solids heated by electromagnetic radiation - partic. IR, UV, microwave, and low frequency energy in removal of volatilisable organics |
DE4135905A1 (en) * | 1991-10-31 | 1993-05-06 | Bilfinger + Berger Bauaktiengesellschaft, 6800 Mannheim, De | Removing chlorinated hydrocarbon(s) from soils with clay cpds. - by suspending soil in water, blowing air bubbles into suspension to capture pollutants, and adsorbing pollutants with air gases |
DE9402553U1 (en) * | 1994-02-16 | 1994-04-14 | Hydrogeologie GmbH, 99734 Nordhausen | Plant for cleaning contaminated bulk goods |
DE4244125A1 (en) * | 1992-12-24 | 1994-06-30 | Ferngas Salzgitter Gmbh | Process for the treatment of dusty contaminated media |
EP0739659A1 (en) * | 1995-04-24 | 1996-10-30 | Robert Mittelmeier | Method and plant for cleaning contaminated materials, particularly soils |
FR2846577A1 (en) * | 2002-11-06 | 2004-05-07 | Entpr De Travaux Publics Andre | Method for decontaminating polluted material comprises putting material in contact with gas in cell, mixed with gas flow and then evacuated, gas then extracted from cell to drive away pollutant |
DE19901996B4 (en) * | 1999-01-20 | 2012-07-12 | Umweltschutz Nord Gmbh & Co. | Method for reducing volatiles in soils and apparatus for carrying out this method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3601490A1 (en) * | 1986-01-20 | 1987-07-30 | Hoelter Heinz | Treatment of contaminated soils |
DE3604761A1 (en) * | 1986-02-14 | 1987-08-20 | Possehl & Co Mbh L | Process and apparatus for treating granular materials |
-
1989
- 1989-02-20 DE DE19893905133 patent/DE3905133A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3601490A1 (en) * | 1986-01-20 | 1987-07-30 | Hoelter Heinz | Treatment of contaminated soils |
DE3604761A1 (en) * | 1986-02-14 | 1987-08-20 | Possehl & Co Mbh L | Process and apparatus for treating granular materials |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0405067A2 (en) * | 1989-06-30 | 1991-01-02 | LEONHARD WEISS GmbH & Co. NIEDERLASSUNG CRAILSHEIM | Device for removing volatile contaminants from soil or similar |
EP0405067A3 (en) * | 1989-06-30 | 1991-08-28 | Leonhard Weiss Gmbh & Co. Niederlassung Crailsheim | Method and device for removing volatile contaminants from soil or the same |
DE4119149A1 (en) * | 1991-03-22 | 1992-11-05 | Hak Anlagenbau Gmbh Fuer Verfa | Gas purged desorption for solids heated by electromagnetic radiation - partic. IR, UV, microwave, and low frequency energy in removal of volatilisable organics |
DE4135905A1 (en) * | 1991-10-31 | 1993-05-06 | Bilfinger + Berger Bauaktiengesellschaft, 6800 Mannheim, De | Removing chlorinated hydrocarbon(s) from soils with clay cpds. - by suspending soil in water, blowing air bubbles into suspension to capture pollutants, and adsorbing pollutants with air gases |
DE4244125A1 (en) * | 1992-12-24 | 1994-06-30 | Ferngas Salzgitter Gmbh | Process for the treatment of dusty contaminated media |
DE9402553U1 (en) * | 1994-02-16 | 1994-04-14 | Hydrogeologie GmbH, 99734 Nordhausen | Plant for cleaning contaminated bulk goods |
EP0739659A1 (en) * | 1995-04-24 | 1996-10-30 | Robert Mittelmeier | Method and plant for cleaning contaminated materials, particularly soils |
DE19901996B4 (en) * | 1999-01-20 | 2012-07-12 | Umweltschutz Nord Gmbh & Co. | Method for reducing volatiles in soils and apparatus for carrying out this method |
FR2846577A1 (en) * | 2002-11-06 | 2004-05-07 | Entpr De Travaux Publics Andre | Method for decontaminating polluted material comprises putting material in contact with gas in cell, mixed with gas flow and then evacuated, gas then extracted from cell to drive away pollutant |
EP1418010A1 (en) * | 2002-11-06 | 2004-05-12 | Entreprise de Travaux Publics André et Max Brezillon | Method, device and plant for decontamination of a polluted material |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8130 | Withdrawal |