Water treatment characteristics of impure water-scale and sludge in

Water treatment

1. Water treatment-characteristics of impure water-scale and sludge in boilers Gnana Chandana 2019027047

2. Boiler water treatment Boiler water treatment is a type of industrial water treatment focused on removal or chemical modification of substances potentially damaging to the boiler. It is used to control alkalinity, prevent scaling, correct pH, and to control conductivity. The main objectives to treat and condition boiler water is to exchange heat without scaling, protect against scaling and produce high quality steam. Internal treatment is for boiler feed water External treatment is for make up feed water

3. Characteristics of impure water

4. Scale and sludge Scale Sludge Definition Scale is a hard adhering crust/coating on the inner walls of the boiler. Sludge is a soft, loose and slimy precipitate formed on the inner walls of the boiler. Disadvantages 1.Wastage of fuel 2.Lowering of boiler safety 3.Decrease in efficiency 4.Danger explosion 1.Wastage of fuel 2.Choking of pipes Prevention Dissolving by adding chemicals By using well softened water By using well softened water By frequently blow down operation

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