For decades, most people have associated the term "molecular structure" with membranes of one sort or another. While this is true, membrane housing presents a unique concept that was not previously known. When considering the different types of membrane housing and their uses, it is important to consider a few of the reasons why the membrane is so special.
As the water in a closed system moves through various stages, it is subject to many changes. The size, shape, position, and permeability of the membrane housing will all affect how the water interacts with the liquid medium. The membrane, also referred to as an o-ring, is a thin membrane that can be constructed out of a variety of materials. The most common o-ring construction is made out of silicone, but other synthetic membrane housings have been developed. Table 1 shows the permeability ranges of different membrane housings, stainless steel o-rings, and PVC membrane housing to help in comparing the different membrane housing options.
For certain applications, the need for an extra level of security may be the most important consideration. Certain membrane elements make it possible to secure certain materials, such as stainless steel, through chemical modification. These reverse osmosis membrane elements are available for both counter tops and under sink units. Another advantage of these elements is that they can provide the necessary corrosion resistance without adding additional cost to the overall system.
As a general rule, reverse osmosis membrane housing should not be used as the only housing option. Certain chemicals, including chlorine and chlorination byproducts, can cause damage to other components, and hoses and fittings must be carefully considered. Depending on the piping or drain field, it may also be necessary to install fixtures that are specific to that application. Additional steps should be taken to protect the integrity of the installation. Before installing any type of housing or fitting, check valve compatibility and flow capacity, and make sure the system will not be damaged by expansion or contraction due to temperature changes.
As with any type of filtration or purification system, membrane housing is subject to wear and tear. When installing, consult the manufacturer's information for the recommended cleaning and care procedures for the unit. Not all systems are created equal. Some systems are designed for harsh environmental conditions; others are designed for more temperate climates. Regardless of the location, it is important to ensure that the membrane housing will be able to withstand the environment the system will be placed in.
Reverse osmosis home systems can be a viable option when cleaning water in difficult or demanding areas of the home, provided the RO membrane housing system is installed correctly. However, it should be considered that using this system does not eliminate other contaminates. Water filters are available that can effectively reduce chemicals and toxins that can pose a threat to the health of both the family and the home. It is important to ensure the filtration device being purchased meets the needs of the family and the building. A reputable dealer will work closely with customers to find the most appropriate filtration device for their needs, as well as meeting the regulations in an appropriate setting.
