The mother liquid from the suspension production of PVC contained a small quantity of solvable polymer,such as PVA.It was difficult to remove PVA by traditional coagulation and filtration method.

• 悬浮法PVC生产过程中产生的离心母液中含有少量PVA等可溶性高分子化合物,采用传统的混凝法和过滤法很难将其有效去除。