Biocoenosis of biofilm and activated sludge in hybrid systems used for wastewater treatment
AbstractOver the past decade many new technologies for wastewater treatment have been de-veloped. Hybrid reactors, which combine conventional activated sludge process with biofilm processes, have captured researchers’ attention. These systems (e.g. IFAS, hybrid MBBR, MBSBBR) have been applied to achieve year-round nitrification and gain additional treatment capacity but also for simultaneous nitrification/denitrification and biological nutrient removal (BNR) as an alternative for conventional activated sludge systems (CAS) (Gonzalez-Víar et al., 2015). Support media used in hybrid systems include free-floating moving bed (e.g. naturally buoyant plastic formed into cylinders or chips in MBSBBR) and fixed bed (e.g. carrier based on loop cords in IFFAS). Depending on many factors like operational conditions, the ratio of suspended to attached biomass can vary. It was reported that attached biomass can reach even above 90% (Makowska et al., 2013).
|Book||Skoczko Iwona, Szatyłowicz Ewa (eds.): Książka streszczeń VII Międzynarodowa Konferencja Naukowa „INŻYNIERIA ŚRODOWISKA – MŁODYM OKIEM”, 2018, Oficyna Wydawnicza Politechniki Białostockiej, 124 p.|
|Keywords in Polish||IFAS, moving bed, nitrifying bacteria, denitrifying bacteria, phosphorus accumulating organisms|
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