【简答题】
简述混床除盐原理。
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答案
混床是将阴阳离子交换树脂按照一定的比例均匀混合放在一个交换器中，它可以看做是许多阴阳树脂交错排列的多级式复床。在与水接触时，阴、阳树脂对于水中阴阳离子的吸附（反应的过程）几乎是同步的，交换出来的H+和OH-很快化合成水，即将水中的盐除去。
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