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9 Cards in this Set
- Front
- Back
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Aeration |
To remove volatile solutes To aid ion removal by oxidation |
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Chemical dosing |
To control ph and reduce hardness |
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Settling |
To separate precipitates from treated water |
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Disinfection |
To kill pathogens |
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Filtration |
To remove any remaining suspended material |
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Lime soda |
Water treated with lime & soda ash Ca precipitates as CaCO3 Mg precipitates as Mg(oh) CaCO3 can be recycled |
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Recarbonisation |
CO2 bubbling Dissolves CaCO3 & Mg(oh) HCO3 produced Ph neutralized |
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Chlorination |
Use of Cl gas Cl2 reacts with water Hypochlorous & hydrochloric acid produced Hypochlorite ion produce and used as disinfectant |
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Ozone |
Water reacts with ozone Destroys viruses |
