Low aeration basin dissolved ...

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Low aeration basin dissolved oxygen

Low aeration basin dissolved oxygen (DO) concentration for the applied organic loading (F/M) leads to filamentous bulking by several filaments . The required aeration basin DO concentration to prevent "low DO bulking" is not a constant, rather, is a function of the F/M rate . Simply, higher bulk DO is required to prevent the growth of these filaments as the F/M increases, due to faster oxygen use within the floc at higher F/M, oxygen depletion inside the floc, and the need to maintain aerobic conditions in the interior of the floc. A higher bulk DO concentration increases the diffusion of oxygen into the floc interiors.