RO Membranes & Housing
RO membranes are typically either cellulose acetate or polysulfone coated with aromatic polyamides3. NF membranes are made from cellulose acetate blends or polyamide composites like the RO membranes, or they could be modified forms of UF membranes such as sulfonated polysulfone10.
Membrane housing is a pressure vessel for loading membrane elements in a reverse osmosis water treatment system. Currently, there are three types of membrane housings with different materials for water treatment on the market:
Features:
FRP (fiberglass reinforce plastic),
stainless steel
PVC.
RO Membranes & Housing
However, in recent years, more and more reverse osmosis water treatment systems have chosen to use FRP membrane housing. This is because the FRP membrane housing has a strong advantage in terms of pressure bearing capacity, design size, material properties and operating temperature compared to stainless steel and PVC membrane shells.