The diagram illustrates the various stages involved in removing salt from seawater to produce purified water.
From an overall perspective, the process consists of six stages, beginning with the transportation of salty water to pre-treatment and concluding with the storage of drinkable water.
As can be seen, the first step involves the pre-treatment of seawater, which undergoes a filtering process. Following this, the filtered water is pushed through a membrane under high pressure. Meanwhile, impurities and salt particles larger than the membrane gates are removed, allowing only H2O molecules to pass through.
In the subsequent stage, the liquid flows to the post-treatment phase. Additionally, the saltwater is divided into two streams; the wastewater is returned to the sea. In contrast, during the post-treatment stage, lime, chlorine, and fluoride are added to the water.
Finally, the clean water is stored in preparation for integration into the water supply.