INDUCTION ABILITY OF EXCESS PHOSPHATE ACCUMULATION FOR PHOSPHATE REMOVING BACTERIA

By the induction method of alternating anaerobic incubation with organ ic substrates and aerobic incubation without organic substrates for ae robically grown cells, a bacterium isolated from an activated sludge s howed distinct functions of excess phosphate accumulating bacteria whi ch release phosphate with a concomitant uptake of organic substrates a naerobically and take up phosphate aerobically. The enzyme system of e xcess phosphate accumulation was induced only after at least two anaer obic/aerobic cycles.