Effects of disc rotational speed and submergence on the performance of an anaerobic rotating biologlcal contactor

摘要

Effects of disc rotational speed (ω) and disc submergence (Ω) on the system performance of a four- stage anaerobic rotating biological contactor (AnRBC)for treating high-strength organic wastewater were investigated to establish optimal operating conditions. Results of tracer study showed that the flow was more mixed when the AnRBC system was operated at a higher ω or at a lower Ω. In the steady-state operating conditions, the stage chemical oxygen demand (COD) removal efficiency increased as ωincreased in the range of 0 - 12 rpm.