A novel media combination comprising of two layers of commercially available expanded clay (EC) media was tested for use in existing roughing filters (RF). Results have indicated a potentially suitable alternative to anthracite/sand, a dual media combination of a fine grade of high density EC media and a coarse grade of low density EC media. This novel dual media consistently achieved longer run lengths, whilst producing filtrate of adequate quality for slow sand filter influent – even when challenged with algal laden water.
Novel dual media combination for drinking water treatment
A. Mikol, C.S.B. Fitzpatrick, M.J. Chipps, M.E.J. Steele, R.G.W. Bayley; Novel dual media combination for drinking water treatment. Water Science and Technology: Water Supply 1 December 2007; 7 (5-6): 131–139. doi: https://doi.org/10.2166/ws.2007.148
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