Methodology
Element count is sized directly from design flow, the selected module's unit membrane area, and the design flux you enter, rounded up to a whole number of elements. Recommended flux ranges — 50-90 LMH for UF, 70-120 LMH for MF — are drawn from vendor-neutral pressurized hollow-fiber membrane technical literature for the applications each process typically serves.
System recovery is computed per unit membrane area, per filtration/backwash cycle: gross permeate produced during the filtration run minus water consumed during backwash, both set by flux and duration. Daily totals are then scaled across the full system area, and the realistic daily average net output is reported alongside the nominal instantaneous design rate, since no net permeate is produced during backwash minutes.