Method of removing organic volatile and semi-volatile contaminants from an aqueous solution

摘要

Contaminated water is pumped through hollow fiber membranes of microporous polypropylene with a very thin outside coating of plasma polymerized disiloxane. The fibers are potted in a module which resembles a shell and tube heat exchanger. Strippant is pumped through the shell side of the module and over the outside of the fibers. The volatile and semi-volatile contaminants in the water diffuse across the membrane and dissolve into the oil. The process results in clean water and a smaller volume of more highly contaminated oil.