Remoção de micro e macronutrientes em reatores UASB em dois estágios tratando águas residuárias de suinocultura.

Abstract

The performance of two upflow anaerobic sludge blanket reactors (UASB) was evaluated in pilot scale (volumes of 908 and 188L), installed in series, fed with swine wastewater with average total suspended solid concentrations (TSS) around 5 e 10 g L-1 and submitted of hydraulical detention time (HDT) of 36 and 18 h in the first reactor and HDT of 7,5 and 3,7 h in the second reactor. Average values of removal efficiency of the micronutrients from 64 to 94% for Fe; 45 to 74% for Zn; 48 to 87% for Cu and 34 to 54% for Mn were obtained.