Course: BFM 203 Water Treatment and Control

Lecture

(7/9)

Diatomaceouse Earth Filtration

The Diatomaceous Earth Filtration system requires that media (precoat) be added to the water being treated as slurry. The precot collects on a septum or other appropriate screening device. After the initial precoat, water is treated by passed it through the coated screen. (This is primarily a straining process). This type of filtration has limited used in larger treatment plants due to hydraulic, slide disposal, and operational considerations. The photo album below includes photos of an external and internal view of 1) a diatomaceous earth (D.E.) filter, 2) the tops of a series of D.E. filters, and 3) the bottom view of a D.E. filter.