| 摘要 |
A fully mixed reactor 1 for activated sludge treatment of sewage as a mixed liquor which reactor 1 includes at least one aerator 6 operative intermittently to raise the dissolved oxygen level of the liquor and a control system 7 which is arranged to operate the aerator 6 to provide an operative phase including a predetermined aerobic time period after a first dissolved oxygen target level is reached, and an inoperative phase including a predetermined anoxic time period after a second, lower, dissolved oxygen target level is reached, is provided.
|
