DESALINATION OF SEA WATER OR SALOBRA

Applications

The desalination of seawater and brackish water is applied to obtain drinking water for:
  • Populations;
  • Hotels;
  • Industries;
  • Remote islands;
  • Irrigation of agricultural and leisure areas.

Characteristics of the waters to be treated

  • High or medium salinity, ranging from 2000-2500 mg / l in brackish water to 35000-42000 mg / l in sea water;
  • Inexhaustible source of water;
  • Small variability of water quality to the same absorption zone;
  • The main presence of sodium chloride, although with different chemical components, depending on the capture area;
  • Possible significant variations in temperature depending on the time of year, sea currents and the catch system;
  • The higher the external temperature or the insulation, the higher the salinity;
  • Lower salinity in the riparian zones of large rivers;
  • Salinity and composition are different from one sea to another;
  • Algae may be present in shallow water.

Technology applied in treatment

The reverse osmosis technique is used, whose characteristics are:
  • It is the process in which pressure is exerted on water so that it passes through a semi-permeable membrane.
  • Separation, due to the effect of osmotic pressure, of all salts and chemical compounds, in the order of 99.5%;
  • The temperature, which influences, must not be lower than 4 ° C or higher than 35 ° C;
  • The contamination of the membrane will depend on the previous treatment applied to the incoming water;
  • The higher the turbidity, the higher the degree of pretreatment.

System Advantages

  • Modular, compact and transportable;
  • Occupy a small deployment area;
  • For the chemical cleaning produced, only energy and some reagents are used;
  • Eliminates or greatly reduces contaminants in water, in the order of 99.5%;
  • Produce drinking water with low salinity 500 mg / l, suitable for human consumption, according to the WHO quality criteria.

System disadvantage

  • Works at high pressures;
  • High energy consumption, even with energy recuperators;
  • High salinity concentrate reject volume 30-55%, depending on incoming salinity; High concentrations of salt in concentrate.

Conclusions

  • The use of desalination techniques, both in brackish and marine waters, may be, in certain circumstances, the only alternative to obtain drinking water;
  • 24/24 h service guarantee.

WE COLLABORATE WITH OUR CUSTOMERS IN ORDER TO DELIVER A COMPLETE SOLUTION TO ANY CHALLENGE THAT THEY COME UP WITH.