Advanced Process & Biosolids Management
For Connecticut Wastewater Treatment Class II, III, and IV operators (RCSA 22a-416-4/-7), coverage shifts from basic headworks/primary treatment toward activated sludge process control, solids handling, and effluent compliance math.
Activated Sludge Process Control
Understand the core control variables operators adjust daily: mixed liquor suspended solids (MLSS), sludge volume index (SVI), food-to-microorganism ratio (F:M), and return/waste activated sludge (RAS/WAS) rates. Be able to reason through cause-and-effect scenarios - e.g. a rising SVI with poor settling typically points to filamentous bulking, which operators address through F:M and dissolved-oxygen management rather than simply wasting more solids.
Solids & Biosolids Handling
Know the difference between thickening (gravity, DAF, gravity belt) and dewatering (belt filter p