Desalinated Water Re-Mineralization: Why and How?

How

Why

•     Product water of membrane and thermal desalination plants are typically acidic, low mineral composition, poor in vital minerals for plants, animals, and human.

•     The similar situation exists with low-mineral content surface water of rivers, lakes, and wells.

Water Mineralization is a part of a natural surface or groundwater treatment providing calcium & magnesium carbonate and alkalinity to water to make it useful and stable.

        Water Re-mineralization Post-treatment of fresh water produced by desalination consists of two key components:

(1) Mineralization;

(2) Disinfection.

Water mineralization / re-mineralization is an expensive process.

•    It is mandatory in all the countries that desalinate water.

•    Mineralization of low mineralization water is applied in many countries.

  • The common method of water mineralization is the addition of calcium and bicarbonate ions to desalinated or soft water, implemented by percolating of CO2 or H2SO4 acidified water through fixed beds of CaCO3 granules.

  • An alternative mineralization approach is based on dissolution of micronized CaCO3 particles in a slurry by acidified low minerals water. 

  • Watefy' process is the advanced one using micronized calcium and magnesium - containing particles 

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