Diameter peripheral drive scraper for circular decanter

PRTPD

CATEGORY SEWAGE
TYPOLOGY CLARIFIERS

WHEN TO USE IT

The peripheral drive diameter scraper for circular type PRTPD decanter shall be used whenever in a water sedimentation process it is necessary to remove the sedimented sludge in less time than necessary to remove it for a scraper radial type PRTP because the scraper PRTPD in addition to the walkway also has the scraping of the sludge of the diameter type and therefore the time of scraping of the same point of the tank is halved.

HOW IT IS MADE

The diameter peripheral scraper for PRTPD type circular decanter consists of: a pair of mobile girders with a walkway function; a slewing ring unit, a central deflector; two traction trolleys; a control unit for each trolley; a scum box; a radial pair of foam blades; a diameter system of sludge scraper blades; a perimeter deflector and a weir. The slewing ring unit is mounted centrally to the tank and is equipped with thrust bearings and manifold with double rotating brush distributing machine. The traction bogies and their respective control units shall be positioned peripheral to the walkway.

HOW IT WORKS

The inlet of the sewage is central, but their flow is diverted by the deflector in order to optimize sedimentation. The sedimented sludge is collected and conveyed by the scrapers to the center of the tank. The function of the foaming blades and the scum box is to remove any floating material and substances such as oils and surfactants. The overload protection can be entrusted to electromechanical torque limiters suitably calibrated complete with alarm signalling device that can be carried over to the control panel.