Video clip shows a rotifer Lecane inermis ingesting filamentous bacteria Microthrix parvicella in the activated sludge sample. Potential of rotifers to control bulking in wastewater treatment plants was described in details in paper entitled: The role of Lecane rotifers in activated sludge bulking control. Edyta Fiałkowska and Agnieszka Pajdak-Stós, Water Research, 42(10-11):2483-2490, 2008
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