Let microbes consume dissolved organic substrate. A diffuser basin supplies oxygen, a clarifier separates flocs and return sludge circulates biomass.
• 3D scene parts: Aeration basin; air blower / diffusers; secondary clarifier; return activated sludge; floc / microorganisms. • Controls: Influent substrate (100–400 mg/L); Influent flow (50–200 m³/h); Aeration volume (250–1000 m³); Fixed biomass concentration (1000–4000 mg/L); Dissolved oxygen (0–4 mg/L); Return-flow ratio (0.2–1 fraction). • Live readouts: Basin substrate (mg/L); Substrate removal (%); Hydraulic retention time (h); Return sludge flow (m³/h). • Guided experiments: Aeration lost; More retention. • Four tabs (visual laboratory, curves and measurements, experiments, learn and assess), a model-verification run, a timestamped event log and a trial report.
dS/dh = Q/V(Sin − S) − 0.03 X [DO/(DO+0.5)] S/(20+S) HRT = V/Q; Qras = ras × Q 1 playback s = 0.1 process h
Fixed biomass and imposed DO; no biomass growth, oxygen-transfer, sludge-age or settling-capacity model. Initial S equals influent. Rate constants are representative teaching values. Try the preset experiments, then compare the live readouts with the equations.
Oxygen changes biological consumption..
No. Fixed biomass and imposed DO; no biomass growth, oxygen-transfer, sludge-age or settling-capacity model. Initial S equals influent. Rate constants are representative teaching values.
Fixed biomass and imposed DO; no biomass growth, oxygen-transfer, sludge-age or settling-capacity model. Initial S equals influent. Rate constants are representative teaching values.