Brackish water is generally defined as water containing between 1,000 and 5,000 parts per million (ppm) of total dissolved solids (TDS) while highly brackish water can reach up to 15,000 ppm TDS. Brackish Water Reverse Osmosis (BWRO) systems process water from a wide variety of sources with typical operating pressures between 150 and 400 pounds per square inch (psi).
Conwed Ultra High Porosity feed spacers help decrease the resistance to liquid flow in BWRO systems with an equivalent water flux rate – the rate at which water permeates a reverse osmosis membrane.
The new feed spacers are designed for BWRO spiral wound elements, a filter comprised of different layers. It contains membrane, feed spacer and permeate sheets rolled up around a product collection tube. The feed spacer provides the necessary gap between other layers to promote turbulence of the feed stream. Depending on the chemical and design configuration, feed spacers can influence membrane damage, biofouling and pressure drop; the three main challenges in reverse osmosis systems.
