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Reduction of Acid-Fast and Non-Acid-Fast Bacteria by Point of Use Coagulation-Flocculation-Disinfection

Casanova, Lisa
Sobsey, Mark
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Abstract

Point of use (POU) household water treatment is increasingly being adopted as a solution for access to safe water. Non-tuberculous Mycobacteria (NTM) are found in water, but there is little research on whether NTM survive POU treatment. Mycobacteria may be removed by multi-barrier treatment systems that combine processes such as coagulation, settling and disinfection. This work evaluated removal of a non-tuberculous Mycobacterium (Mycobaterium terrae) and a Gram-negative non-acid-fast environmental bacterium (Aeromonas hydrophila) by combined coagulation-flocculation disinfection POU treatment. Aeromonas hydrophila showed 7.7 log10 reduction in demand free buffer, 6.8 log10 in natural surface water, and 4 log10 reduction in fecally contaminated surface water. Turbidity after treatment wasreductions.

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<p>Originally Posted in:</p> <p>Int J Environ Res Public Health, 12 (11), 14420-8. DOI: <a href="http://dx.doi.org/10.3390/ijerph121114420">10.3390/ijerph121114420</a></p>
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2015-01-01
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Research Projects
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Keywords
coagulation; flocculation; disinfection; Mycobacterium; point-of-use; water treatment
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Casanova, L.M.; Sobsey, M.D. Reduction of Acid-Fast and Non-Acid-Fast Bacteria by Point of Use Coagulation-Flocculation-Disinfection. Int. J. Environ. Res. Public Health 2015, 12, 14420-14428.
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