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Types
- Sludge blanket Precipitator
- Solids recirculation Clarifiers
- Sludge blanket Precipitator
- Solids recirculation Clarifiers
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Cold Softening, addition of lime
- Calcium hardness , removal as calcium carbonate ppte
- Magnesium hardness ppte as magnesium hydroxide
- Bicarbonate alkalinity , first converted to carbonate then ppte as calcium carbonate
- Free carbon dioxide , converted to bicarbonate, then carbonate then ppte as calcium carbonate
- Silica converted to insoluble silica magnesium complex when it reacts with magnesium hydroxide
- Turbidity , from suspended solids
- Calcium hardness , removal as calcium carbonate ppte
- Magnesium hardness ppte as magnesium hydroxide
- Bicarbonate alkalinity , first converted to carbonate then ppte as calcium carbonate
- Free carbon dioxide , converted to bicarbonate, then carbonate then ppte as calcium carbonate
- Silica converted to insoluble silica magnesium complex when it reacts with magnesium hydroxide
- Turbidity , from suspended solids