Crunch Time

Passive dewatering helps an Idaho city cope with an emergency, control odors and reduce its waste activated sludge inventory

When mechanical failures disabled two digesters at the Idaho Falls (Idaho) Wastewater Treatment Plant, sludge had to be transferred to an 18-million-gallon storage lagoon. There, partially digested material floated to the surface, formed a scum layer, and decomposed under the...

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