方法一：用饱和的盐水（盐水浓度40%），浸泡搅拌，再静止半小时这时阳树脂沉在水下面，阴树脂浮在水上面。
Method 1: Use saturated brine (40% brine concentration), soak and stir, then rest for half an hour when the cationic resin sinks under the water, and the anionic resin floats above the water.
方法二：先反洗（水下进上排），流量先小再大至10m/h，要让树脂松动，能明显看到树脂上下翻动。反洗，同时关进水阀和开下排阀，让水在最短时间内排光，让树脂沉降。这时由于阳树脂密度大沉在下面，阴离子树脂密度小浮在上面。两种树脂明显分开。
Method 2: Wash back first (enter and drain under water), flow rate is small and then large to 10m/h, to make the resin loose, you can see the resin upside down and down. Backwashing, while closing the intake valve and the lower drain valve, let the water drain in the shortest time, let the resin settle. At this time, due to the high density of the cationic resin sinking below, the anionic resin density floating above. The two resins are obviously separated.