Abstract: The invention relates to an odor trap (31) for a transport conduit (10) with a division into a main branch (11) and a side branch (12). The odor trap comprises a mounting part (32) for releasable mounting in the side branch, and a membrane (33) of elastic material which comprises a first membrane part (33) to be received in the side branch (12) and a second membrane part (34) to be received in the main branch (11). The second membrane part (34) lies at an angle relative to the first membrane part (33). The membrane is at least partially movable under pressure of a fluid from a closing position, in which the membrane closes the passage of the main branch to the fluid, to a position allowing passage in which the membrane leaves clear the passage of the main branch for the fluid. The invention also relates to a system of a transport conduit (10) with a division into a main branch (11) and a side branch (12) and an odor trap (1) according to the invention.

Abstract: The invention relates to a method for operating a sewage system for draining waste water. According to the invention, oxygen is artificially and periodically added to the waste water, for example in that air is periodically blown into a pipe (1) of the sewage system by means of an air pump (4). The invention furthermore relates to a sewage system for carrying out the present method.

Abstract: A waste water disposal system, in particular a sewer system, including a plurality of collecting containers (3) each divided into a lower space (8) and an upper space (7) separated by a partition (9) including a valve member (10) therein. Sewer connections (1) are connected to the upper spaces (7) of the plurality of collecting containers (3) via supply pipes (2). A discharge pipe (5) is connected to the lower spaces (8) of the collecting containers (3), and a pressure pipe (13) including a compressed air source (16) is connected to the lower spaces (8) of the collecting containers (3). A control system (12) provides for the selective emptying of the collecting containers (3) into the discharge pipe (5) by introducing compressed air into the collecting containers (3) via the pressure pipe (13).