Use of filterability index in granular filtration: effect of filter medium type, size and shape

Abstract

Ives' Filterability Index (FI) was employed to evaluate silica sand versus crushed recycled glass as a rapid filter media. The presence of past studies comparing these two media allows an evaluation of the applicability and utility of the FI concept as a simple and quick preliminary test for the assessment of different media to be used in water filtration. The present tests also allow an evaluation of the effect of shape on filter performance.