Product Description

RO benefit

Reverse osmosis utilizes man-induced pressure on the "dirty side" (high mineral content side) to overcome the natural osmotic pressure trying to flow the other way, plus some added pressure to speed the process, in order to force water across the semi-permeable membrane to the "clean side". In the process, *8% or more of the dissolved minerals are left behind on the "dirty side".

Reverse osmosis uses membranes wound around a core in order to fit large amounts of membrane surface area into a small volume. Such membranes are referred to as "spiral wound" and have largely displaced the early "hollow fiber" systems. Since the membrane prevents *8% of dissolved ions from passing into the clean water stream, a lot of minerals are left on the "dirty" side of the membrane. To sweep these away and minimize scaling (as the minerals become more concentrated, many may exceed their solubility concentration and begin to precipitate or scale onto the membrane, thus decreasing its filtration efficiency and potentially rendering it useless), typically about *5% of the total feedwater is washed across the dirty side of the membrane to drain. In addition to the concentrated minerals, much of the tiny particles of suspended dirt in the feedwater are also swept to drain. This produces a very clean product water since even very small particles (down to 0.***1 micron), including most total organic carbon or TOC is also removed.