CA2123410A1 - Heating to detoxify solid earthen material having contaminants - Google Patents
Heating to detoxify solid earthen material having contaminantsInfo
- Publication number
- CA2123410A1 CA2123410A1 CA 2123410 CA2123410A CA2123410A1 CA 2123410 A1 CA2123410 A1 CA 2123410A1 CA 2123410 CA2123410 CA 2123410 CA 2123410 A CA2123410 A CA 2123410A CA 2123410 A1 CA2123410 A1 CA 2123410A1
- Authority
- CA
- Canada
- Prior art keywords
- earthen material
- volatile
- electrodes
- region
- contaminants
- 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.)
- Granted
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
- B09C1/06—Reclamation of contaminated soil thermally
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/11—Improving or preserving soil or rock, e.g. preserving permafrost soil by thermal, electrical or electro-chemical means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0004—Devices wherein the heating current flows through the material to be heated
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/03—Electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention includes a method of treating solid earthen material having volatile, semi-volatile, and non-volatile contaminants. Six electrodes are inserted into a region of earthen material to be treated in a substantially equilateral hexagonal arrangement. Six phases of voltages are applied to corresponding electrodes.
The voltages are adjusted within a first range of voltages to create multiple current paths between pairs of the electrodes. The current paths are evenly distributed throughout the region defined by the electrodes and therefore uniformly heat the region. The region of earthen material is heated to a temperature sufficient to substantially remove volatile and semi-volatile contaminants by promoting microbial action. This temperature is less than a melting temperature of the earthen material.
The voltages are adjusted within a first range of voltages to create multiple current paths between pairs of the electrodes. The current paths are evenly distributed throughout the region defined by the electrodes and therefore uniformly heat the region. The region of earthen material is heated to a temperature sufficient to substantially remove volatile and semi-volatile contaminants by promoting microbial action. This temperature is less than a melting temperature of the earthen material.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/792,213 | 1991-11-13 | ||
US07/792,213 US5347070A (en) | 1991-11-13 | 1991-11-13 | Treating of solid earthen material and a method for measuring moisture content and resistivity of solid earthen material |
PCT/US1992/009764 WO1993009888A1 (en) | 1991-11-13 | 1992-11-12 | Heating to detoxify solid earthen material having contaminants |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2123410A1 true CA2123410A1 (en) | 1993-05-27 |
CA2123410C CA2123410C (en) | 1999-08-24 |
Family
ID=25156143
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002123410A Expired - Lifetime CA2123410C (en) | 1991-11-13 | 1992-11-12 | Heating to detoxify solid earthen material having contaminants |
Country Status (5)
Country | Link |
---|---|
US (3) | US5347070A (en) |
EP (1) | EP0612273B1 (en) |
CA (1) | CA2123410C (en) |
DE (1) | DE69228194T2 (en) |
WO (1) | WO1993009888A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7290959B2 (en) | 2004-11-23 | 2007-11-06 | Thermal Remediation Services | Electrode heating with remediation agent |
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US5347070A (en) * | 1991-11-13 | 1994-09-13 | Battelle Pacific Northwest Labs | Treating of solid earthen material and a method for measuring moisture content and resistivity of solid earthen material |
US5415744A (en) * | 1994-06-01 | 1995-05-16 | Massachusetts Institute Of Technology | Removal of contaminant material from a soil site |
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US5738778A (en) * | 1995-02-28 | 1998-04-14 | P + P Geotechnik Gmbh Ingenieure Fur Boden-Und Grundwassersanierungen | Method related to the sterilization of microorganisms and/or to the mineralization of organic substances including microbic metabolites in a ground region and in the ground water by means of electric current |
US6280601B1 (en) | 1995-02-28 | 2001-08-28 | Falk Doring | Electrolytic method for sterilization of microorganisms and/or mineralization of organic and/or inorganic substances in ground soil |
US5558463A (en) * | 1995-03-21 | 1996-09-24 | Geisel; Donald J. | Soil remediation apparatus and method |
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US20020076370A1 (en) * | 1995-06-07 | 2002-06-20 | Sik-Lam Wong | Meta-stable radical generator with enhanced output |
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-
1991
- 1991-11-13 US US07/792,213 patent/US5347070A/en not_active Expired - Lifetime
-
1992
- 1992-05-13 US US07/882,996 patent/US5330291A/en not_active Expired - Lifetime
- 1992-11-12 WO PCT/US1992/009764 patent/WO1993009888A1/en active IP Right Grant
- 1992-11-12 EP EP92925177A patent/EP0612273B1/en not_active Expired - Lifetime
- 1992-11-12 CA CA002123410A patent/CA2123410C/en not_active Expired - Lifetime
- 1992-11-12 DE DE69228194T patent/DE69228194T2/en not_active Expired - Lifetime
-
1994
- 1994-06-30 US US08/268,490 patent/US5545803A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7290959B2 (en) | 2004-11-23 | 2007-11-06 | Thermal Remediation Services | Electrode heating with remediation agent |
Also Published As
Publication number | Publication date |
---|---|
WO1993009888A1 (en) | 1993-05-27 |
CA2123410C (en) | 1999-08-24 |
US5330291A (en) | 1994-07-19 |
DE69228194T2 (en) | 1999-09-02 |
EP0612273B1 (en) | 1999-01-13 |
EP0612273A1 (en) | 1994-08-31 |
US5545803A (en) | 1996-08-13 |
DE69228194D1 (en) | 1999-02-25 |
US5347070A (en) | 1994-09-13 |
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Legal Events
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EEER | Examination request | ||
MKEX | Expiry |