RO Membranes
Semi-permeable membrane elements used in reverse osmosis systems to reject dissolved salts and other constituents under applied feed pressure. Performance is described by the manufacturer (flow, rejection, pressure limits) rather than by third-party ratings.
Engineering Application
The separation core of RO trains for seawater and brackish water desalination, industrial process water, and municipal potable water. Element families are selected for the expected feed TDS, recovery, fouling propensity, and cleaning regime.
Key Parameters
| Parameter | Unit |
|---|---|
| Nominal salt rejection | % |
| Active membrane area | m² |
| Element permeate flow | m³/day |
| Maximum operating pressure | bar |
| Feed spacer thickness | mil |
Related Engineering Tools
RO Recovery Calculator
RO recovery and permeate flow with full water and salt balance closure, concentrate concentration and salt loads.
Recovery (%) = (Permeate Flow / Feed Flow) × 100 RO Salt Rejection Calculator
Calculate membrane salt rejection percentage from feed and permeate TDS concentrations.
Rejection (%) = (1 - (Cp / Cf)) × 100 RO Permeate TDS Calculator
Project expected permeate total dissolved solids based on feed water salinity and rejection specs.
Cp = Cf × (1 - R / 100) RO Design Studio
Build a preliminary RO system design with feed inputs, staging, custom membrane data, sequential element estimates, balances, and warnings.
Q = A × S × (ΔP − Δπ) RO Mass Balance Calculator
Simplified TDS-based dissolved-solids balance for RO feed, permeate, and concentrate flow and quality checks.
Qf · Cf = Qp · Cp + Qc · Cc RO Feed Pressure & Specific Energy Calculator
Estimate required RO feed pressure (permeate osmotic gap + net driving pressure) and specific energy consumption with optional energy recovery.
P_feed ≈ Δπ + (J × 100/B·SCP factor) + ΔP_friction RO Membrane & Vessel Element Count Calculator
Calculate number of RO membrane elements and pressure vessels from permeate flow, design flux, and element area.
Elements = Q_p / (Flux × A_element) · Vessels = ⌈Elements / Elements per Vessel⌉ Related Engineering Topics
Related Manufacturers
Neutral references for engineering context. Product and performance claims are the manufacturers' own published data, never EngiMetric third-party ratings or rankings.