Two aspects of pollution are studied in this paper, one is treatment of dilute absorbed solution of SO2 with ion -exchange membrane technique, the other is treatment of industrial waste water from Shanxi Aluminium Plant with membranes.
Among the technologies of the treatment of dilute SO2 gas, Wellman-lord natrium-alkali means has been applied in the desulphurizing process for many years. It has much more progress than the others in recent years, but hydrosulfite concentration of the absorbed solut...