Effect of impeller type and agitation on the performance of pilot scale ASBR and AnSBBR applied to sanitary wastewater treatment - Novaes, Luciano Farias de; Saratt, Bruna Luckmann; Rodrigues, José Alberto Domingues; Ratusznei, Suzana Maria; Moraes, Deovaldo de; Ribeiro, Rogers; Zaiat, Marcelo; Foresti, Eugenio (Journal of Environmental Management, 2010)