volume 38, issue 20, P4424-4434 2004
DOI: 10.1016/j.watres.2004.08.021
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Mari T.T. Lipponen, Pertti J. Martikainen, Ritva E. Vasara, Kristina Servomaa, Outi Zacheus, Merja H. Kontro

Abstract: We studied the population dynamics of nitrifying bacteria during the development of biofilms up to 233 or 280 days on polyvinylchloride pipes connected to two full-scale drinking water distribution networks supplying processed and chloraminated surface water. The numbers of nitrifiers in biofilms were enumerated at intervals of 10-64 days by the most probable number (MPN) method at waterworks and at several study sites in distribution network areas. The numbers of nitrifiers increased towards the distal sites.…

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