Effectiveness of filter beds in the reduction of sulphates and calcium carbonate in water for human consumption.
The inhabitants of the town of Salache, Cotopaxi-Ecuador consume water from underground sources. In order to know the quality of the water, laboratory tests were carried out, determining that the water contains 450 mg L-1 of sulfates, as well as 520 and 583 mg CaCO3 L-1 of alkalinity and hardness, r...
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| Eará dahkkit: | , , |
| Materiálatiipa: | article |
| Giella: | spa |
| Almmustuhtton: |
2021
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| Fáttát: | |
| Liŋkkat: | https://perfiles.espoch.edu.ec/index.php/perfiles/article/view/139 |
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Lasit fáddágilkoriid | Čoahkkáigeassu: | The inhabitants of the town of Salache, Cotopaxi-Ecuador consume water from underground sources. In order to know the quality of the water, laboratory tests were carried out, determining that the water contains 450 mg L-1 of sulfates, as well as 520 and 583 mg CaCO3 L-1 of alkalinity and hardness, respectively. The Ecuadorian standard indicates that sulfates must be at 200 mg L-1, and that alkalinity as well as hardness must not exceed 500 mg CaCO3 L-1. Through experimental tests of downward filtration, the individual effectiveness of the filter materials sand, zeolite and strong acid cationic resin, in removing the concentrations of sulfates and calcium carbonate, was verified. The sand filtration results allowed the removal of alkalinity concentrations to 340 mg of CaCO3 L-1, hardness to 225 mg of CaCO3 L-1 and sulfates to 315 mg L-1. The zeolite bed reduced alkalinity to 280 mg of CaCO3 L-1, hardness to 257 mg of CaCO3 L-1 and sulfates to 320 mg L-1. The strong acid cationic resin was more effective in reducing alkalinity to 198 mg of CaCO3 L-1, hardness to 180 mg of CaCO3 L-1 and sulfates to 120 mg L-1. |
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