Calcolatrice Portata Fognaria Gratuita

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m^3/day
%

Average Sewage Flow

1,600 m^3/day

Peak Sewage Flow4,400 m^3/day
Peak Flow Rate50.9 L/s

Average Sewage Flow vs Average Water Demand

Vedi formula →

Formula

## Sewage Flow Estimation Wastewater flow is derived from water consumption, reduced by a return factor. ### Formulas **Average sewage = Water demand x Return factor** **Peak sewage = Average x Peak factor x (1 + Infiltration)** The return factor (0.7-0.9) accounts for water consumed (irrigation, evaporation) that does not reach the sewer. The peak factor accounts for diurnal variation, and infiltration accounts for groundwater entering through pipe joints.

Esempio Risolto

2000 m^3/day water demand, 0.8 return factor, 2.5 peak factor, 10% infiltration.

  1. 01Average sewage = 2000 x 0.8 = 1600 m^3/day
  2. 02Peak sewage = 1600 x 2.5 x 1.10 = 4400 m^3/day
  3. 03Peak flow rate = 4400 / 86.4 = 50.9 L/s