| 摘要 |
An ion exchange filter medium comprising poly(vinyl alcohol) series ion exchange fibers having one or more ion exchange groups selected from a sulfonic acid group, a carboxyl group, an iminodicarboxyl group, a quaternary ammonium salt group and an amino group and, optionally, together with one or more thermoplastic synthetic fibers and/or natural fibers can rapidly and completely capture ions derived from Cr, Cd, Ca, P, etc. in water. |
