The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 1997
Filed:
May. 20, 1996
Philip B Simon, Ann Arbor, MI (US);
James Braithwaite, Dexter, MI (US);
Other;
Abstract
A soil remediation system (10) for removing contaminants (11) from a contaminated area (12) located in the vadose zone (13) of the earth and comprising multiplicity of stratigraphic zones, contaminants and compositions (26, 28), is disclosed. The system (10) comprises a first circulator (32) for circulating gas through the first zone (26) at a first volumetric rate and a second circulator (38) for circulating gas through the second zone (28) at a second volumetric rate to carry the contaminants in each respective zone (26, 28) to the surface of the earth (15). The system (10) includes a zero or low permeability membrane or layer (34) positioned between the first and second zone (26, 28) to control the commingling of the first and second volumetric flow rates so as to allow removal of contaminates in the first zone (26) independent of the removal of contaminates in the second zone (28).