Temporary and permanent hardness of water is removed by –
Correct Answer: Permutit method
Description: REMOVAL OF HARDNESS: Temporary hardness: Boiling Addition of lime Addition of sodium carbonate Permutit process (Na2 Al2 SiO2 H2O) Permanent hardness: Addition of sodium carbonate Base exchange process (permutit process) Park's Textbook of Preventive and Social Medicine, 25th edition, Page No. 787
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Social & Preventive Medicine
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