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Diatomaceous Earth Filtration

A filtration method resulting in substantial particulate removal, that uses a process in which: 1. A "precoat" cake of diatomaceous earth filter media is deposited on a support membrane (septum); and 2. While the water if filtered by passing through the cake of the septum, additional filter media, known as "body feed," is continuously added to the feedwater to maintain the permeability of the filter cake.