At their last Technology Team meeting, Living Waters for the World (LWW) approved zeolite filter media for particulate removal from raw water sources. Hydro Source, LLC is one vendor marketing zeolite media under the trade name Turbidex©. Their literature claims that Turbidex© media is more effective than sand. The micron efficiency for Turbidex© media is 3–5 microns versus 25-30 microns for sand.
The dense zeolite material increases the media loading factor 2.8 times the loading factor for sand. In a typical barrel sand filter, for example, 2 – 3 cu ft (150 lbs) of media can be used in place of sand to get better filtering efficiency with more flow rate through the filter. At a price of $50 – $60 per cu ft, the media is more expensive than sand, but worth the efficiency and flow improvements.
In pressure filter applications, higher flow rates will improve particulate removal over sand in most cases.
LWW has identified zeolite media suppliers in the Yucatan and Guatemala. The next time you are considering installation of a barrel sand filter, think about using zeolite media in place of sand.
Here’s a link: www.turbidex.com