PREPARATION OF SA-Fe CATION EXCHANGE MEMBRANE AND IT’S APPLICATION IN ELECTRODIALYSIS FOR TREATING WASTEWATER

摘要

An insoluble SA-Fe membrane was prepared by being linked soluble sodium alginate with FeCl3. SEM was used to observe its surface structure. IR spectrum indicated that Fe3+ was linked with ?COOH and ?OH in SA membrane. As a cationic exchanging membrane in electrodialysis the membrane was applied in treating inorganic wastewater with high concentration of inorganic ammonia and azote. The results of experiment showed that it was well-selective to ammonia and azote. The percentage of the removal of ammonia and azote in wastewater was up to 80%.