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In a wastewater treatment plant, what is the PRIMARY purpose of the activated sludge
process?
Randy AI: Correct! The activated sludge process is a
biological treatment method where microorganisms (bacteria,
protozoa) are used to break down dissolved organic matter. Mixed liquor
suspended solids (MLSS) are maintained in the aeration basin and return through
the RAS system. Physical screening happens in preliminary treatment, and UV is a
disinfection step - both downstream processes.
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