1-Year Simulation – TFSS (Non-Volatile) vs. TFSS + TVSS (with FOG Coating)
Day 0
Left: TFSS only (inorganic grit/sand – packs lower)
Right: TFSS + TVSS (organics/FOG coat particles – fills higher & faster)
Right: TFSS + TVSS (organics/FOG coat particles – fills higher & faster)
TVSS = volatile/organic solids. TFSS = fixed/non-volatile (grit, silt, clay). FOG in the TVSS fraction coats TFSS particles and reduces settling velocity.