| 11. | Drains at the base convey treated water away for disinfection.
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| 12. | Two wells receive additional disinfection through an ultraviolet ( UV ) system.
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| 13. | Ozone was used during the First World War for disinfection of wounds.
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| 14. | CCCSD is one of the largest sewage plants to use ultraviolet disinfection.
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| 15. | The optimal wavelengths for disinfection are close to 270 nm.
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| 16. | In addition, a special postal marking may note the disinfection process.
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| 17. | In 1998 this led to improvements in aircraft disinfection procedures.
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| 18. | Chloramine disinfection is used in both small and large water treatment plants.
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| 19. | Ozonation also produces fewer disinfection by-products than chlorination.
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| 20. | When vaccines are not available, sanitation and disinfection can be effective.
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