Deionized water & distilled water are different kinds of the high purity water; however, they are made in different ways. That depends on source water; the distilled water is more pure compared to deionised water –that does not mean that it is better. There’re pros & cons of using deionised water and distilled water for the particular processes, mainly when it comes about efficiency and cost. Here in this article we learn what is deionised water and different uses.
Before you determine which is better, deionised or distilled water it is very important you understand both the differences. Deionized water is treated in such a way that removes all ions –that means all dissolved mineral salts. And distilled water is boiled so it evaporates and re-condensed, and leaving any impurities behind.
The organic materials & inorganic minerals are common impurities that are found in water. Organics will generally get removed through filtering methods, which includes carbon filters, physical filters, or reverse osmosis membranes. After the pre-treatment, water is sent through the DI system that has 2 kinds of resin: anion and cation. Both these resins attract the positive and the negative ions, replacing it with H+ & OH-. And H+ that is combined with OH-transfers in H2O – water. Combination of the filters & DI resins will remove all contaminants.
What Gets Removed From Deionized Water?
While it comes about deionised water, it is pure. In every case, water purity before this goes through water treatment makes the difference. Deionization process removes only ions – the non-organic particles. The water must get filtered first for removing the organic material, and filtering with the reverse osmosis system can remove the significant number of contaminants. It leaves just the small amount of the ionized minerals for DI process to remove.
Alternatively, water distillation will remove good number of impurities than ions. The process removes all minerals, chemicals, and bacteria. But, that does not mean it removes everything, but, especially if water has volatile organics and some other contaminants. The impurities can evaporate and be there in distilled water. And with deionised water, the pre-treatment filtering of water is the important step.
Uses of Deionized Water
Deionized water is the good option for several uses, which includes cooling applications, pharmaceutical industries, laboratory uses, and many more. Unless high water purity is needed, deionised water often is the better alternative as it is made quickly & for lesser money.
