Treatment of Water For Town Use

Water for use in a town is usually purified from rivers and treated to reduce the impurity level in it.

The processes involved in water treatment are:

  1. Sedimentation – Here, the water is pumped through sediments of soils so as to filter it into a reservoir.
  2. Coagulation – The filtered water in the reservoir are coagulated by the use of alum so as to exposed some dissolved particles.
  3. Filtration – This is when the water filtered form dirts.
  4. Disinfection – Chemicals like chlorine are added so as to kill germs present in the water. Moreover, iodine and fluorine can be added to prevent goiter and tooth decay.

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