Nutrient Removal - Total Nitrogen Study Guide
Sludge age is the theoretical length of time a particle of activated sludge stays in the treatment plant and is measured in days. In an activated sludge plant, sludge age is the amount (lbs) of mixed liquor suspended solids (MLSS) divided by the suspended solids, or excess cell mass, withdrawn from the system per day (lbs/day of waste activated
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