Whole House Filtration
These are usually two-stage filtration systems.
The first stages of shower filter dubai
traps particles larger than 10 to 100 microns in size, and the second stage
traps smaller particles. This arrangement allows a much longer useful lifetime
for the finer membrane (and more expensive) second stage filter. Unlike
softening systems, filtration systems filter out all particles larger than the
membrane rating of the second filter. This means they remove metals, non-metals
and biological particles such as bacteria. All filtration systems will require
as much or more maintenance (back-washing, filter replacement, etc.) as the
most maintenance-intensive water softening systems. The more effective systems
have higher installation costs than the most expensive softening systems, as
well.
Filtration
Ratings
The effectiveness of a filtration system is based
on the smallest size particles it removes from water. The more particles
removed, the higher the cost. Cloth and Depth filters will remove particles
larger than 10 micron (100,000 angstroms). This includes contaminants such as
sand, pollen and larger Giardia. Microfilters are rated from 10 micron down to
1/100 micron. Filters rated below 1/10 micron will remove bacteria as well as
both Cryptosporidium and Giardia (two pathogens targeted by municipal treatment
plants). The finest microfilters will also remove most colloidal metals from
water. The highest commonly available level of filtration is Reverse Osmosis
(RO) filtration. These systems are rated between 1/1,000 micron and 1/10,000 (1
angstrom). Although expensive ($10,000 and up) to install, RO systems remove
viruses, dissolved organics and even metal ions from water filter dubai .