Passing vs Chopping: Understanding The Tradeoffs In Wastewater Collection And Transport

Should wastewater solids be passed or chopped? As wipes, fibrous materials, and other non-biodegradable solids increasingly challenge collection systems, utilities must balance clog resistance, maintenance burden, energy efficiency, and downstream treatment impacts. This presentation explores the tradeoffs between passing solids and macerating them, highlighting where each approach provides advantages and how emerging pump, cutter, and impeller technologies are reshaping solids handling strategies.