Zero discharge/water reuse — The opportunities for membrane technologies in pollution control

✍ Scribed by PeterS. Cartwright

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 475 KB
• Volume: 83
• Category: Article
• ISSN: 0011-9164
• DOI: 10.1016/0011-9164(91)85097-e

✦ Synopsis

The membrane separation technologies of microfiltration, ultrafiltration, reverse osmosis and electrodialysis all possess characteristics which make them attractive for industrial pollution control applications . These include :

-Continuous process, resulting in automatic and uninterrupted operation .

-Low energy utilization involving neither phase nor temperature changes .

-Modular design -no significant size limitations .

-Minimum of moving parts with low maintenance requirements .

-No effect on form or chemistry of the contaminant .

-Discrete membrane barrier to ensure physical separation of contaminants .

-No chemical addition requirements .

A review of the basics of these technologies will aid in understanding how they can be applied to pollution control A recent development in filtration technology known as "crossflow" or "tangential flow" filtration allows for continuous processing of liquid streams . In this process, the bulk solution flows over and parallel to the filter 225