Question

Question 2 (Excel)

A single stage RO desalination system has the following design data:

- Water permeability = 2.05xl0-6 m3/m2.s.kPa - Salt permeability = 2.03x10-5 m3/m2.s

- Feed salinity = 44.0 g/L

- Feed flow rate = 3.5 kg/s

- Permeate flow rate = 120 kg/min - Feed pressure = 7500 kPa

- Reject pressure = 63.0 atm

- Permeate pressure = 1.1 bar

Calculate permeate salinity, brine salinity, brine flow rate, and membrane area. Assume the deviation between the density of feed/brine and pure water can be neglected.

Answer 1