Let's start withOsmosis. It is important to understand that Osmosis is a natural process. The most common effects from severe osmosis can be seen in old boats, where the timbers have become a semi-permeable membrane, allowing moisture to penetrate over a long period of time. This process has occurred, aided by the effects of pressure from the atmosphere and also from water pressure below the water line. As there is a residual pressure acting on the outside of the vessel, over a long period of time, moisture slowly permeates through the material, creating a nightmare for the vessel owner, as the timbers begin to rot.
In the case of Reverse Osmosis however, we reverse the natural process, taking advantage of the extreme filtration effects, that can be achieved by using variable pressures and temperatures, combined with a controlled, enclosed system. By forcing the fluid, in this case water, through a pre-determined membrane, we can extract fresh, clean water, from a saline solution. Pressure requirements vary, as the salinity increases or decreases in the water source. Filtration is not really the correct term here, as Pre-Filtration is carried out prior to the membrane.
CAT Pressure Pumps
Stainless Steel Water Tanks
Remote Systems Monitoring
Remote monitoring is available for your installation. Our Engineers will monitor your system from the Factory, taking into account the general running conditions and service intervals. Enquire about this optional feature for your Reverse Osmosis System.
What is Desalination?
Desalination Membrane cutaway below. As you
can see, the spiral wound membrane is quite a complex component. This
is the heart of the desalination process. The most important components
in a desalination system, are the membranes and the high pressure pump.
The membrane, is where the actual process occurs. The fresh water or
(permeate) is separated from the salt solution (feed water) and
directed away from the membrane to be collected as the 'Product' .
The high pressure pump creates the pressure required, to allow the
membrane to function correctly. The salt-free water, or permeate, then
becomes a usable source of fresh water. In theory, this water is
potable, although for human consumption, it is highly recommended that
the water be treated with an Ultra Violet lamp to kill any bacteria
that may be present, prior to drinking. There are many pre-treatment
and post-treatment methods for desalinated water. The most appropriate
method, depends on the feed water source, and the intended use of the
product water. Watch the short video below, to learn how the membrane
is constructed. This will help you understand more about the importance
of the membrane, within this type of desalination system.
The systems above, are designed for undersink application in the home. Domestic Undersink Reverse Osmosis. Entry level water purifiers from Pure Water Systems
Follow the link above to view all Pure Water Systems products.
