April 15, 2016 By Martin
Last updated on April 30, 2016
The oldest method for production of pure water is the thermal method or distillation -water evaporation from the surface and condensation.
In the process of steam formation together with water molecules other solutes can enter the steam in accordance with their volatility. The basis of the process is the transfer of water in the vapour phase with its subsequent condensation. The main drawback of this method is the very high maintenance costs of the electricity needed to convert the water into the steam. That said, evaporation is achieved in various ways.
Let’s consider the distillation.
Organic substances, that have similar boiling point than that of water can slip in the distilled water. I’d say if the water contains the oil drops they can be found also in the distillate. Therefore, theoretically after the distillation the absolutely pure water is obtained. What’s happening in the process of distillation, am I correct? The water molecules have the boiling point of 100°C or 212° Other substances have different boiling points. There is some more info about this stuff on this website. When the water has already boiled out, the boiling point of various impurities is higher. Theoretically, they will begin to evaporate. The substance that boils at a lower temperature evaporates first.
The substance that boils at a lower temperature evaporates first. Due to this difference the water is separated. However, since the salt boils at a much higher temperature, for the most part there’re practically no salts in the distilled water. I know that the water distillers have preand post water filters, with intention to eliminate the huge problem of organic substances.
Distillation is used mainly in laboratories and factories, where Surely it’s needed. Reverse osmosis is widely used in water treatment plants, both in the premises and for manufacture of various drinks, bottled water, and similar Distillation is used mainly in laboratories and factories, where Surely it’s needed.
Filed Under. Deionized Water, Distilled Water