4. Pressure profiles
4.1 Calculating pressure drop
Most clarifications are carried out at a constant flow rate (4 to 20 m3/h per m2 of filter). The flow regime is laminar. At the start of filtration, when the bed is clean, the pressure drop dpo across a small element of thickness dz can be calculated by Darcy's equation.
The pressure drop increases with increasing retention . Although numerous equations have been proposed
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Pressure profiles
Optimization of a homogeneous constant cross-section filter
References
- (1) - HERZIG (J.P.), LECLERC (D.M.) et LE GOFF (P.) - Flow of suspensions through porous media. Application to deep filtration - (Écoulement des suspensions à travers les milieux poreux. Application à la filtration en profondeur). Ind. Engng Chem. (USA) 62, n× 5, 1970, p. 8-35.
- (2) - HERZIG (J.P.) et LE GOFF (P.) - Le...
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