Abstract
Studies on the tubular membrane mounted by the supporting tube were carried out to develope the cartfidge type reverse osmosis module in which the tubular membrane could be easily exchanged. The fablicated membrane tube is composed of a hard vinylchloride tube with the grooves for water passage, the backing material and the cellulose acetate membrane. The unification of them made the exchange of the membrane and the handling procedure easier.
For various types of backing materials, the method of fabrication by direct casting and the pressure losses were examined. The result showed that the filter cloth of polyester 301 was the best. Studies on the device for water passage of a supporting tube and the method for the reinfgrcement of the membrane were also carried out. A short tube module of 50cm long and 12.5 mm inner diameter was manufactured and the test for the performance was conducted. The result showed that water flux and salt rejection were 0.5m3/m2·day and 95% respectively, with 0.1 N NaCI solution at the operating pressure of 40 kg/cm2.
