Webitat Upgrade Avoids Expensive Plant Shutdown
Snohomish WWTP is a 1.2 MGD plant consisting of four aerated lagoon cells located approximately 30 miles north of Seattle where heavy rainfall events are common. As a result, maximum month daily flows can peak at up to 7.9 MGD, decreasing biological treatment and in extreme cases, causing the slow growing nitrifiers to wash out.
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