COMPACT LIFT ARRANGEMENT

摘要

The invention relates to a lift arrangement for SBR small sewage treatment plants, comprising a treatment container (5) in which at least one pretreatment chamber (51) and at least one activated sludge chamber (52) and also a separating wall (53) separating the two chambers are provided, further comprising at least three pneumatic lifts (2), which are each disposed in the treatment container (5) bridging the separating wall (53), and a clarified water lifter (3), wherein - the feed lifter (1) comprises a first feed line (11) in the pretreatment chamber (51), a first riser line (12) and a first dip tube (13) for steadied inflow into the activated sludge chamber (52); - the sludge recirculation lifter (2) has a second feed line (21) in the activated sludge chamber (52), a second riser (22) and a second dip tube (23) for the steadied recirculation of the delivered sludge into the pretreatment chamber (51); - the clarified water lifter (3) comprises a third feed line (31) into the activated sludge chamber (52) and a third riser (32); and - a first hollow molded part (10) forming a first flow duct (100) is provided, in which the first riser (12) opens into a highest point (101) of the first flow duct (100) and wherein a first section (103) of the first flow duct (100) directed downward forms the first dip tube (13), wherein the downwardly directed section (103) of the first flow duct (100) has an expanded cross-section and the third feed line (31) is disposed therein at a predetermined height level.