In this paper, the multiphase equations of change are used as a theoretical basis for analyzing constant pressure, non-parabolic filtration behavior. This theory, verified by experiment, predicLs that the medium resistance is the dominant factor influencing filtrate rates and that septum selection. relative to the particulate phase, is the key variable affecting nun-parabolic behavior.Experimental data also shows that non-parabolic behavior is more energy efficient than parabolic and that nan-parabolic behavior cannot be attributed to non-Durcian effects.

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