In a previous study, we showed that there was a significant increase in mycolata numbers associated with foaming events at a wastewater treatment site possessing three activated sludge plants. In this paper, we demonstrate that branched filamentous mycolata were a minor proportion of the mycolata morphotypes present in those activated sludge plants, accounting for less than 21% of the mycolata population in the mixed liquor and foam samples examined. In most samples examined, the number of filamentous mycolata was negligible compared to the number of other mycolata morphotypes present. Furthermore, filamentous mycolata did not contribute to any of the significant differences in mycolata concentration observed between foaming and non-foaming situations (P<0.01). These findings suggest that conventional microscopic examination for monitoring mycolata populations in foaming plants may be misleading and should be used with caution.
Are filamentous mycolata important in foaming?
R.J. Davenport, T.P. Curtis; Are filamentous mycolata important in foaming?. Water Sci Technol 1 July 2002; 46 (1-2): 529–533. doi: https://doi.org/10.2166/wst.2002.0530
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