Activated Sludge Process Variations: Operator Study Cards

Ten printable reference cards covering the activated sludge configurations that show up on Grade III to V exams: plug flow, complete mix, step feed (normal and wet weather mode), contact stabilization, extended aeration, oxidation ditch, SBR, MLE, and 5-stage Bardenpho.

Each card shows the process flow diagram with RAS, WAS, and recycle routing, plus typical F/M, MLSS, MCRT, HRT, advantages, disadvantages, and where the process fits best. A one-page comparison table puts all nine side by side for quick review.

Built for exam prep, plant training, and the wall of your control room. 13 pages, 16:9 landscape, print-ready.