Transcription of Introduction To Activated Sludge Study Guide
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Wisconsin Department of Natural Resources Wastewater Operator Certification Introduction To Activated Sludge Study Guide December 2010 Edition Subclass C. Wisconsin Department of Natural Resources Bureau of Science Services, Operator Certification Program Box 7921, Madison, WI 53707. The Wisconsin Department of Natural Resources provides equal opportunity in its employment, programs, services, and functions under an Affirmative Action Plan. If you have any questions, please write to Equal Opportunity Office, Department of Interior, Washington, 20240.
Sludge age is the theoretical length of time a particle of activated sludge stays in the treatment plant, measured in days. In an activated sludge plant, sludge age is the amount (lbs) of mixed liquor suspended solids divided by the suspended solids, or excess cell mass, withdrawn from the system per day (lbs per day of waste activated sludge).
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