Almost all naturally occurring water contains dissolved organic and inorganic salts and minerals, such as sodium, calcium, magnesium, iron, chlorides, sulfates, nitrates, carbonates and bicarbonates, amongst others. This water may also contain high and low molecular weight organic compounds due to decayed organic matters or manmade pollutants. When high levels of these types are found, the feed water may be rendered undrinkable or unusable for your particular application. ENAQUA ENPURE™ membrane systems filter the water of such pollutants, making it much more suitable for your application
Membrane Technologies
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Reverse Osmosis
- Reverse Osmosis (RO) employs a semi-permeable membrane that allows water molecules to pass through, while rejecting larger molecules. Water which enters the RO system is separated into two streams: pure product water (permeate) and salty water containing unwanted compounds (concentrate). The permeate is virtually free of all organics and typically contains less than ten (10) % of the dissolved minerals originally present.
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Nanofiltration
- Nanofiltration (NF) operates essentially the same as RO except that the membrane allows more of the dissolved solids to pass through. NF membranes also operate at lower pressure than RO membranes. Applications where final water quality is not as critical, feed water pressure must be minimized, or where there is a desire to pass more minerals (as in some drinking water applications), then may be the correct technology.