The diagram below shows how salt is removed from sea water to make it drinkable
The flow chart illustrates the way of disposing salt from sea water to produce drinkable one.
Overall, there are four main steps in the process, beginning with pre-treatment for seawater and ending with the integration stage
Initially, a huge amount of saltwater is pumped into the pre-treatment filter, where large impurities are removed via another filter before being piped back into the sea. Meanwhile, the remaining water is forced through a membrane at high pressure so that the other substances, as well as salt, are eliminated from water molecules and being returned to the sea together with the others mentioned before.
Although the first two steps are proceeded carefully, post-treatment with chemicals: lime, chlorine and fluoride are still necessary to ensure the highest quality of processed water. Finally, the desalinated one is stored at the factory until needed, which can be dispatched later to the integrated water supply system for public usage.