Inventors:
Robert Dejaiffe - Kennewick WA
Jeffrey E. Surma - Richland WA
Assignee:
Integrated Environmental Technologies, LLC - Richland WA
International Classification:
B01D 3702
US Classification:
210769, 210777, 210791, 210193
Abstract:
Disclosed is filter aid formed of a crushed foam glass utilized as a filtering aid for removing suspended materials in a fluid stream by first providing a permeable support with the crushed foam glass filter aid placed adjacent thereto, and directing the fluid stream having suspended materials through the filter. Suspended materials within the fluid stream are captured on the crushed foam glass filter aid, separating the suspended materials from the fluid stream. The foam glass filter aid and the suspended materials may then be removed as a mixture, melted to form a molten glass, fritted to form a frit, comminuted to form a foam glass precursor, mixed with precursor with a foaming agent and heated and crushed to reform the foam glass filter aid. Suspended materials captured on the crushed foam glass filter aid are thus removed from the foam glass filter aid, and the foam glass filter aid to be recycled and used again in the filtering process.