Unit I
Water Technology
Impurities in water, hardness of water: Types, Units and Numericals . Determination of hardness (by EDTA method using molarity concept) and alkalinity, numericals .
Ill effects of hard water in boiler – priming and foaming, boiler corrosion, caustic embrittlement, scale and sludge.
Water treatment: i) Zeolite method and numericals.
ii) Demineralization method. Purification of water: Reverse osmosis and Electrodialysis.
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