Ground water having high electric conductivity and high TDS value in some places means that the water cannot be used for the purpose of drinking and irrigation. Is there any cost effective method that can be used to treat such water?
High conductivity is linked to the total ions in water, so the treatment should be conducted either by neutralisation (acid-base excess), by precipitation then filtration or by extraction of metals.
It may be a good idea to run some laboratory tests using simple aeration and see if you can precipitate (oxides)some of the compounds. Can check the conductivity after the tests and see the effectiveness. This may be the simplest of all the techniques, if it does the job for you.
The easiest and most economical way to get rid of TDS is by flocculation with FeCl2, Fecl3 or Feno33 following up with settling or sieving. With conductivity, the best option will be increasing the pH of the water to aid precipitation using a base. Ion exchange resins can also be used.
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