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de Valk, S.L. (author), Tavares de Sousa, Tales A. (author), Khadem, A.F. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)The objective of this study was to investigate the effect of waste activated sludge (WAS) predation by the aquatic worm Tubifex tubifex (T. tubifex) on the overall biodegradability of WAS. The initial WAS biodegradability potential was determined in 80 days sequential batch-fed anaerobic and aerobic treatment combinations. These treatment...journal article 2020