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ACTIVATED SLUDGE PROCESS ACTIVATED SLUDGE PROCESS Prepared by Michigan Department of Environmental Quality Operator Training and Certification Unit ACTIVATED SLUDGE PROCESS To “Treat” Wastewater Remove (reduce) Or “Stabilize” The Material in Wastewater SECONDARY TREATMENT Biological Wastewater Treatment Microorganisms consume organic matter from the wastewater, using oxygen for respiration Millions of aerobic and facultative micro organisms remove pollutants thru living and growing process SECON.
... Tank D.O MLSS Secondary Clarifier Sec Eff Settleability Return Activated Sludge Waste Activated Sludge Sludge Blanket Depth Activated Sludge System Organic Load = Pounds of Organics (BOD) Coming... (suspended) MLSS Aeration Tank Secondary Clarifier Sec Eff Return Activated Sludge (RAS) Waste Activated Sludge (WAS) Activated Sludge Suspended Growth, Biological Treatment Need favorable conditions... micro-organisms remove pollutants thru living and growing process Activated Sludge Suspended Growth, Biological Treatment Activated Sludge System Air →Provides Oxygen and Mixing Pri.Eff Biomass