| 1. | Filtration occurs both in nature and in slow sand filtration.
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| 2. | Sand filtration is another method used to treat water.
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| 3. | Large-scale sand filtration facilities also require large surface areas to accommodate them.
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| 4. | An experiment of sand filtration was illustrated by the Italian physician Lucas Antonius Portius.
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| 5. | The McMillan Reservoir and the McMillan Sand Filtration Site in DC also bear his name.
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| 6. | Sand filtration is very effective at removing protozoa and bacteria, but struggles with removing viruses.
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| 7. | He wrote about the multiple sand filtration method in his work " Soldier's Vade Mecum ".
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| 8. | A useful side effect of the system is that the collected seawater is very pure because of the sand filtration effect.
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| 9. | Slow sand filtration was initially the technology of choice for water treatment, later being gradually displaced by rapid sand filtration.
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| 10. | Slow sand filtration was initially the technology of choice for water treatment, later being gradually displaced by rapid sand filtration.
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