초록 ▼

Disclosed is an apparatus for the intermittent aeration of sewage or sewage-activated sludge mixtures. The apparatus is adapted to be disposed below water level and consists of a horizontal air distributor in the form of a pipe jacket closed tightly at both ends except for an aperture for the air su

Disclosed is an apparatus for the intermittent aeration of sewage or sewage-activated sludge mixtures. The apparatus is adapted to be disposed below water level and consists of a horizontal air distributor in the form of a pipe jacket closed tightly at both ends except for an aperture for the air supply, and which, in the area of its two opposite lateral longitudinal edges, includes apertures for the passage of air. The apparatus further includes an elastic air distributing foil covering the apertures for the passage of air and the upper portion of the pipe jacket located between the apertures. The foil is provided with air escape openings which are opened by the air supply to the pipe jacket and closed in case of interruption of the air supply by being sealed against the pipe jacket outside the area of the air passage openings. The apparatus further includes distancing strips located at the two opposite lateral longitudinal edges of the pipe jacket, below the openings for the passage of air and between the pipe jacket and the air distributor foil.

대표청구항 ▼

An apparatus for the intermittent aeration of sewage comprising a horizontal air distributor in the form of a pipe jacket of bend resistant material having a generally circular cross section, being closed on both ends except for an opening in the supply of air, and having air passage openings in the

An apparatus for the intermittent aeration of sewage comprising a horizontal air distributor in the form of a pipe jacket of bend resistant material having a generally circular cross section, being closed on both ends except for an opening in the supply of air, and having air passage openings in the area in its two opposite lateral longitudinal edges below the horizontal middle plane of the pipe jacket, an elastic air distributor foil covering the air passage openings and the area of the pipe jacket located between the openings, the foil provided with air escape openings which are opened by a supply of air to the pipe jacket and closed upon interruption of the air supply and which is sealed against the pipe jacket outside the area of the air escape openings, and a distancing strip disposed along each of the two opposite lateral longitudinal edges of the pipe jacket, below the air passage openings and between the pipe jacket and the air distributor foil such that each distancing strip together with the section of the air distributor foil extending from the pipe jacket to the distancing strip and with the section of the pipe jacket not covered by the air distributor foil form a space whereby air may enter with little resistance and be distributed the length of the distancing strip and lift the air distributor foil so as to permit air to escape into sewage and whereby upon termination of air supply, the air escape openings of the air distributor foil are closed.