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Serving the Big Bear Area Since 1974

Drying Bed

The sludge building and the drying beds are both used to dry solids. The solids from the clarifiers can be pumped directly to the sand-filled drying beds where it is left to dry for several weeks, depending on the weather. The solids are dewatered by percolation through a gravel underdrain system where the water is drained back into the plant. Most of the water is removed from the solids through evaporation. The asphalt-lined bed shown above is used to “further dry” the solids processed through the sludge building. This saves on hauling costs because there is less water contained in the sludge. The drying beds are the most cost-efficient way to dry solids, but require a very large area.

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