Methane / POME Intelligence
POME volume & COD
Mill A · 30 days
Methane balance
t CH₄/day · to engine, flared, emitted to atmosphere
POME Anomaly Detection — Mill A biogas plant Isolation forest + rules
Monitors inflow COD, digester temperature, CH₄ content, biogas yield per kg COD
Reactor temperature has dropped 3.6 °C in 3 days while COD inflow rose +28%. The COD spike coincides with higher sludge oil loss and sterilizer condensate at Mill A (see ST-04 pressure variation) — a shock load that the cooler reactor cannot digest.
Impact: Engine output −5.5 MWh/day · +52 t CO₂e/day fugitive methane.
Recommended: Reduce POME loading 20% for 48 h; inspect heating loop & recirculation pump; dose alkalinity; sample VFA/alkalinity ratio. Expected recovery of biogas yield within 5–7 days; without action, souring risk rises to ≈ 45% within 10 days.
Biogas Yield Prediction — Mill A
m³/day · 21-day history + 14-day forecast, 80% interval
Methane Prediction — next 30 days
Emitted CH₄, t CO₂e/day · driven by crop forecast, COD and capture efficiency
October crop peak lifts POME volume ≈ 5%. Mill A residual elevated for ~5 days until the reactor recovers.
Mill B methane capture — business case
Covered lagoon + gas engine + flare · synthetic pre-feasibility