In April 2005, the Fairplay (Colo.) Sanitation District’s permit limit for effluent ammonia dropped from 25 mg/l to 10 mg/l. The three-cell, 7.4-million-gallon surface aeration lagoon could not meet that limit, as half the year the water was frozen or so cold that nitrifying...
Small Package, Big Result
An IFAS process helps a Colorado Sanitation District meet the challenge of a tougher permit limit on effluent ammonia
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