Determining parameters in activated sludge model No.1 by respirometric experiments with sodium acetate as substrate

This paper presents a systematic experimental project to determine parameters in activated sludge model No.1 (ASM1). It is stressed that the OUR curve-fitting method combining with respirometry is especially useful to determine parameter k_s. Experimental results indicate that the values of μ̂_H, Y_H, b_H and k_s are 6.005d^-1, 0.675g/g, 0.479d^-1 and 6.0mgCOD/L at 20°C respectively. The variation of K_X or k_h has little impact on the biochemical reaction process in samples containing low concentration of X_s.