Rotating scraper bridges

Rotating scraper bridge

The half bridge scraper rotates about a central pivot and trailing scrapers remove the settled sludge from the tank floor

Rotating scraper bridge

The settlement tankĀ under test

Settlement tank

Settlement tank exterior

Scraper bridge

Our design modelĀ of the scraper bridge design

The rotating half bridge scraper is designed to remove settled sludge and scum from circular settlement tanks. The equipment in a tank comprises a galvanised fabricated bridge structure of Channel or Universal Beam sections complete with a galvanised steel open mesh flooring walkway suitable for handrails and toe plates.

The half bridge scraper rotates about a central pivot and its outer end is fitted with an end carriage which carries the bridge drive and wheel assemblies. A series of trailing scrapers remove the settled sludge from the tank floor. The scrapers are arranged to form a continuous volute (spiral) or chevron pattern to ensure that sludge is directed towards a central hopper in the tank floor.

Designed in accordance with the site specific requirements, the design also adheres to the latest W.I.M.E.S 2.03 specification.

NCTS Ltd. are pleased to have carried out the design for several of these projects for our client, George Green (Keighley) Ltd.