膜分离技术 ,就是利用一张特殊的具有选择性能的薄膜 ,在外力推动下对混合物进行分离、提纯、浓缩的一种分离的新方法。这种薄膜必须具有使有的物质通过 ,有的物质不能通过的特性。膜可以是固相、液相或气相。目前使用的分离膜绝大多数是固相膜。物质透过分离膜的能力可以分为? Membrane separation technology, is the use of a special film with selective performance, driven by external force to separate the mixture, purification, concentration of a new separation method. Such a film must have the property of passing some of the material and not allowing it to pass. The membrane can be solid, liquid or gas phase. Most of the currently used separation membranes are solid membranes. The ability of matter to separate through the membrane can be divided into?