Phosphorus precipitation

Indicative calculation of 40% ferric sulphate solution dose for phosphorus precipitation based on flow, P concentration and selected P/Fe ratio.

Phosphorus precipitation – ferric sulphate

Indicative calculation of the 40% ferric sulphate solution dose for phosphorus precipitation based on flow, P concentration and the selected P/Fe ratio.

WWTP flow [m³/day]

P concentration to be precipitated [mg P/L]

P/Fe ratio [kg/kg]

Phosphorus load [kg P/day]

15.00

Required Fe dose [kg Fe/day]

5.56

Ferric sulphate dose [L/day]

331.87

Ferric sulphate dose [L/h]

13.83

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