DESALINATION OF SEA WATER BY SEQUENTIAL PRECIPITATION OF SEA SALTS, WITHOUT ENERGY CONSUMPTION AND REUSING REAGENTS.

摘要

Desalination of seawater by sequential precipitation of sea salts, without energy consumption and reusing reagents. # In Fig. 1 we see how CO {sub, 2} and NH {sub, 3} are introduced into seawater, so that react giving rise to NH {sub, 4} Cl in solution and NaHCO {sub, 3} precipitate see fig.2. # By filtration we pass the NH {sub, 4} Cl to the next tank where it reacts with calcium bicarbonate Ca (HCO {sub, 3}) {sub, 2} see figure 3 to give CaCl {sub, 2} precipitate, CO {sub, 2} and ammonia gas that we will reinsert in the process. And we get fresh water Fig. 5. The precipitated CaCl {sub, 2} is reacted with the NaHCO {sub, 3} that comes from fig.2 in a separate tank with the minimum amount of water possible fig.6, to give a concentrated solution of NaCl, CO {sub, 2} gas that we will reuse and CaCO {sub, 3} precipitate fig. 7 # Filter and evaporate to obtain common salt. Subsequently, the CaCO {sub, 3} will be reacted along with the bicarbonate ion that comes from the addition of CO {sub, 2} to give the calcium bicarbonate solution fig.8 that we will reinsert in our cycle in fig.3.