Water treatment plant sludge discharge to wastewater treatment works: effects on the operation of upflow anaerobic sludge blanket reactor and activated sludge systems - Asada, Lucia Naomi; Sundefeld Júnior, Gilberto Carlos; Alvarez, Carlos R; Ferreira Filho, Sidney Seckler; Piveli, Roque Passos (Water Environment Research, 2010)