4. Elaboration Question 1

Course subject(s) 4. Activated sludge process

Question 1: Aeration

A WWTP is retrofitted, changing from a surface aerator to fine bubble aeration with disk aerators in the activated sludge tanks.

  • Which processes need oxygen in a low loaded activated sludge plant, treating municipal sewage?
  • Describe at least two possible reasons to retrofit a WWTP with new aerators.

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