Method of using waste tires as a filter media.
U.S. patent: 6,969,469 Issued: November 29, 2005 Inventor: Yuefeng Xie Assigned: The Penn State Research Foundation Key statement: The crumb rubber media are compressible which allows the porosity between rubber particles to decrease through the filter bed. The crumb rubber media compress as headloss increases, allowing for better effluent quality late in the run, allow greater depth filtration, can be used at high filter rates greater than 20 gpm/ft. (2) and perform similarly to other traditional filter media in respect to turbidity and total suspended solids removal. |