Water

Salt Water Purification – The Need of the Hour

Most of us are aware of the fact that almost 70% of the earth’s surface is covered by water bodies. Also, nearly 97% of this water is found in the oceans. In fact, there is a dearth of fresh water supply which is slowly becoming a rising problem around the world. Hence, to counter the shortage of fresh water supplies,

salt water purification

has emerged as an effective way to obtain fresh water. Salt water purification is also known as sea water purification as the oceans contain saline water. Many scientists across the world believe that desalinizing ocean water may aid in resolving the current acute water crisis. Read on to explore more about salt water purification.

Salt Water Purification – An Overview

Although available in large volumes, sea water cannot be used for either industrial, agricultural or drinking purposes. The high saline content renders it unfit for drinking. This causes dehydration in your body. Scientists have devised several methods to purify salt water over the years of extensive research. These methods include distillation, reverse osmosis and electro dialysis.

Salt Water Purification by Distillation

Out off all the methods, distillation is the most popular way to reduce the water’s salinity. It is commercially viable and cost-effective. The mechanism is almost similar to the process of evaporation. This is considered to be one of the most common methods to desalinate water. Nowadays, multistage flash distillation is the most common method for desalinate salt water.

Salt Water Purification by Reverse Osmosis

In this process, salt water is passed through a membrane. The salt content is separated and left behind. Thus, fresh water is obtained. This process is relatively expensive but it is highly efficient.

Salt Water Purification by Electro Dialysis

This process is based on the principle that dissolved salt slowly disintegrates into sodium and chloride ions. The process is carried out in a closed chamber divided into different compartments. As electricity is passed through the slt water, the chloride ion moves towards the positive electrode and the sodium ions move towards the negative electrode. Hence, the water is separated from the salt.

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