Hydraulic lift Scrapers

This is a design of rotating half bridge scraper specifically designed for use in flat bottomed final settlement tanks. The scraper blades, consisting of linked individual Vee formations, have a tube leading from the apex of the Vee up to the trough, suspended from the bridge so that its base is below top water level. Because this creates a head differential, the sludge collected in the Vees by the rotation of the bridge is simultaneously conveyed up into the trough. As this is a continuous action, there is no sludge build up in the bottom of the tank. The rate of discharge can be varied form each discharge tube by having adjustable bellmouths fitted to the top of each top. Sludge is removed from the trough by a siphon discharging into a collection system within the central assembly.

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