Page 16 - Opportunities in the Treatment of Water and Other Wast Streams

A variety of membrane technologies can remove dissolved contaminants. Both ultrafiltration and microfiltration membranes were listed under the pretreatment category, this section focuses mainly on common desalination membrane processes. Additional technologies not listed include: electrodialysis, electrodialysis reversal, and electrodeionization. Additional information on these technologies and the technologies included is available in Guerra et al., 2011.
Membranes are flat sheets, which are then wound in a tight spiral for the most surface area in the smallest space.
A diagram of a basic spiral membrane.
Water filters through these membranes, which capture various contaminants, depending on the filter size.
A diagram of the membrane filtration spectrum.
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