Membrane Separation
Membrane separation is a family of filtration processes in
which feed water is constrained through a semi-permeable
barrier (membrane) at high pressure to separate specific
materials from the solution. These processes, classified
according to membrane pore size, include micro-filtration
(MF), ultra-filtration (UF), nanofiltration (NF) and reverse
osmosis (RO).
Membrane separation is a basic treatment stage in a wide
scope of water treatment applications, including:
- Seawater and backwash water desalination
- Production of process and potable water
- Polishing and demineralisation of boiler feed water and pharmaceutical water
- Rehabilitation and recycling of wastewater
- As part of an integrated zero liquid discharge management