The diagram illustrates the process of converting seawater into drinkable water through a series of treatment stages. The system begins with seawater intake and concludes with distribution to an integrated water supply system.
The process commences when seawater enters through an intake point and passes through a pre-treatment filter, which removes initial impurities. The filtered water then moves to a crucial stage where it is forced through a specialized membrane under high pressure. As shown in the detailed inset, this membrane selectively allows water molecules to pass while blocking salt and other impurities.
Following membrane filtration, the water undergoes post-treatment with three chemical additives: lime, chlorine, and fluoride, making it safe for consumption. The purified water is then stored before being distributed through the water supply system. Notably, the process includes two waste management steps: filter backwash and sea water concentrate, both of which are returned to the ocean.
This comprehensive system demonstrates an efficient method of producing potable water from seawater through multiple purification stages and chemical treatment.