Research and Development of Composite Membrane Technology.

摘要

A single-stage seawater test plant was designed,constructed,and made operational using the cellulose 2.83acetate thin-film (250 A) composite membrane in the spiral-wound configuration. The plant,located at Seaworld on Mission Bay in San Diego,California,operates on unacidified seawater (pH = 8.0) at an applied pressure of 68atm (1000psi) with 24 2-in. by 10-3/4-in. spiral-wound elements,each containing approximately 4sq. ft. of membrane. The seawater feed is pretreated by chlorination and sand filtration. The potable product water contains approximately 90ppm total dissolved salts. The sodium chloride rejection is 99.75%. (Modified author abstract)