| 摘要 |
The invention relates to a compactor apparatus (1) for compacting granular material (2), such as granulated activated carbon (GAC), when it is laid in a slow sand filter, comprising a plough means (3), a compacting means (4) and means (5) to provide swivelling of the apparatus in a substantially horizontal plane whereby to compact the material (2). In the preferred embodiments illustrated, the apparatus is removably mountable on an end of an extensible arm of a (usually) tracked vehicle such as a dumper, excavator or digger.
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