Rotating scraper bridges are designed for desludging and descumming of primary and final settling tanks.
The scraper unit consists of:
- the drive carriage
- the central pivot
- the bridge with catwalk
- the floor scraper arrangement
- the descumming unit
Suction type scrapers will be equipped with multiple desludge units which will be fixed by the scraper bridge.
Adjustable scum channels are available on request for descumming of water surfaces. Provision is made for descumming by means of motorized scum paddles for an abnormal amount of floating sludge.