| 摘要 |
An aeration appliance for tanks (1) of sewage or water treatment plants with aerators (9) rotating about a vertical axis and fed by compressed-air generators (11) is made more cost-effective and more flexible in use, especially for retrofitting of existing tanks, by the compressed-air generator (11) being arranged below the liquid level on the rotary mount (swivel mount) (7) and being supplied with electric energy via current collectors. <IMAGE>
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