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Compute the required pressure for the flotation thickener without recycle for the following information: A/S = 0.008 mL/mg Temperature: 20 degree Celsius Air solubility: 18.7 mL/L Recycle steam pressure: 275 kPa Fraction of saturation: 0.5 Surface Loading rate: 8 L/m2/min Sludge flow rate: 400 m3/d

Compute the required pressure for the flotation thickener without recycle for the following information: A/S = 0.008 mL/mg Temperature: 20 degree Celsius Air solubility: 18.7 mL/L Recycle steam pressure: 275 kPa Fraction of saturation: 0.5 Surface Loading rate: 8 L/m2/min Sludge flow rate: 400 m3/d Correct Answer 302 kPa

The pressure is calculated by this formula A/S = 1.3 Sa (fP-1)/Sa. Then the P= p+101.35/101.35. p= 302 kPa.

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