Abstract
This paper used the synthetic drainage which can make a BOD/N ratio high and can proliferate a filamentous organisms intentionally. The electrolysis activated sludge method was adapted to the bulking state by generating of a filamentous organisms, examination was advanced, and the effect by the kind (DC and AC) of turning on electricity was also examined. As a result, the following knowledge was acquired. 1) It was admitted that prevention of bulking was a solution with an effective electrolytic method which uses an iron electrode. 2) T-Fe/MLSS When the rate of a ratio of concentration became 4% or more, it was accepted that a T-P removal rate becomes 70% or more. 3) It was suggested to CODcr removal that either of the condensation effects by whether the current has influenced the activity of a organisms and the iron ion which carries out elution exists. 4) Compared with the AC, the amount of iron ion elution carried out elution of DC twice. 5) It was admitted that the influence which gives this method to the filamentous organisms in turning on electricity because it is adapted was great.
