Tus nqi rov qab ntawm RO membrane yog hais txog qhov feem pua ntawm cov dej hloov mus rau hauv cov dej tsim los yog permeate nyob rau hauv qhov rov qab osmosis membrane system. Nws tau txiav txim siab raws li kev kho dej hauv dej ua ntej thiab cov dej xav tau hauv qhov rov qab osmosis. Tus nqi rov qab ntawm RO membrane system tau txiav txim siab thaum lub sijhawm tsim.
(1) Tus nqi rov qab ntawm RO membrane=(dej ntws tus nqi ntawm RO membrane/dej inlet flow rate) × 100%
(2) Cov qauv kev suav rau tus nqi rov qab, ntsev permeability, thiab desalination tus nqi ntawm rov qab osmosis (nanofiltration) membrane cov khoom yog raws li nram no:
Tus nqi rov qab ntawm rov qab osmosis membrane modules =RO membrane module dej ntau lawm / nkag x 100%
Ntsev permeability ntawm thim rov qab osmosis membrane module=RO membrane module tsim dej concentration / influent concentration × 100%
