| 摘要 |
The invention relates to an arrangement for introducing gas bubbles into a liquid, a device (1) for fastening a perforated aeration membrane (2) to an aerator base plate (3) as well as to an aerator base plate (3) therefor. The aerator base plate (3) has an undercut groove (4) in at least one rim region thereof, into which a locking body (7) clamping the membrane (2) in said groove (4) fits clampingly. The locking body (7) has a generally circular cross-section. The groove (4) has an at least substantially oval cross-section. The locking body (7) is designed to be generally cylindrical.
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