| 摘要 |
PURPOSE: An advanced sewage treatment system using the divided inflow of a returned sludge and a method for operating the same are provided to save a cost required to operate the system by dividing and returning a sludge using one sludge returning pump. CONSTITUTION: An advanced sewage treatment system includes a biological reactor (110), a first pump (121), a second pump (122), and a third pump (123). The biological reactor successively transfers a sewage through a first anoxic bath (111), an anaerobic bath (112), a second anoxic bath (113), an aerobic bath (114) with a submerged separating membrane (130), and a deoxygeneration bath (115). The first pump supplies raw water containing organic materials into the first anoxic bath and the anaerobic bath through a first supplying pipe (P1). The second pump supplies a nitrified sludge, which is accumulated in the deoxygeneration bath, into the anoxic baths through a second supplying pipe (P2). The third pump supplies water, which is separated from the separating membrane, to the outside through a third supplying pipe (P3). |
