Reverse
osmosis (RO) is an extremely effective method for treating water, and
the RO membrane that you choose is critical to the purity of your
water. Note that the RO membrane is the primary filtering media for
this fairly straightforward system, and there are different types of
membranes depending on the type of water that you are going to
filter.
There
are RO membranes that are designed for sea water, brackish water, or
high-flow commercial applications. Membranes come in different
diameters to work with different systems. In fact, most people
consider the RO membrane to be the heart of the filtration system.
While there are different manufacturing methods for this critical
piece, the most common configuration is a spiral wound configuration
that uses one of two materials to round out the manufacturing
process.