Precoat, being diatomaceous earth, perlite or cellulose based, is a sacrificial filter medium used on the precoated rotary drum vacuum filter and a constant, yet necessary, expense to the operation of the filter. They are used to ensure that the filtered liquid is clear, bright and, above all, solids-free. Precoated rotary drum vacuum filters are used in many industries for a wide variety of applications. 0 Comments / by įiltration Services Ltd, a supplier of rotary drum vacuum filters for the bulk separation of solids from liquids has developed a unique precoat automatic knife advance system used for cutting precoat. The waste oil processing plant will begin production later this year.įor further information on the filtration plant equipment please contact Filtration Services Ltd. Each unit is fitted with our unique automatic knife advance system (AKAS) to continuously remove the waste solids from the drums and optimise the filters’ performance.”, says Dr Andrew Walker, Managing Director of Filtration Services Ltd. “These filters utilise the best available technology for maximising filtration efficiency and throughput. The filters are designed to remove contaminants from waste and reclaimed oils so that they can be further processed to manufacture biodiesel. 0 Comments / by įiltration Services Ltd supplies 140m 2 Filtration Plant to a Major Waste Oil Processing Company’s New Facility in Ellesmere Portįiltration Services Ltd have supplied a filtration plant consisting of four 35m 2 rotary drum vacuum filters to a new, state-of-the-art, oil processing facility in Ellesmere Port. Our filters are normally much larger than this, sometimes up to 60m 2 filtration area, but we recognise the need for smaller, compact units too.”įor further information on the Rotavac One rotary drum vacuum filter series, please contact Filtration Services Ltd. With this design, the entire filtration plant is contained within a single skid.
#Dorr oliver rotary vacuum filter install#
Traditionally, rotary drum vacuum filters have been expensive to install due to the necessary ancillary equipment. This mini-plant is easy to install and has a footprint of only 1m x 2m, making it ideal for small volume filtration applications.ĭr Andrew Walker, Managing Director of Filtration Services Ltd, said, “This new style of filter is ideal for those applications where the amount of material to be filtered is relatively small be it an effluent treatment system or low volume production run. The station comprises of a 1m 2 compact rotary drum vacuum filter, filtrate receiver, pumps and control panel.
#Dorr oliver rotary vacuum filter series#
Various kinds of discharge devices can be used.The Rotavac One Series – Compact Filter Stationįiltration Services Ltd have designed and manufactured a continuous compact filter station for use on small volume filtration applications. Cake discharge takes place on the descending side of the drum. Slurry is continuously fed into the filter vat and an adjustable overflow weir controls the liquid level.įor efficient operation of the filter, the vat is equipped with an agitator to prevent solids from settling. The time available for the various filtration steps (cake filtration, washing, air drying) can be adjusted via the filterĬontrol valve. The drum can be operated at various speeds to control cake thickness. The vacuum sucks the liquor through the filter medium and forms a filter cake out of the solids, contained in the feed slurry. A vacuum pump provides the necessary gas stream to accomplish dewatering. The drum deck, equipped with replaceable filter grids, supports the filter medium (cloth made from fabric or metal). The filtration area on the drum surface is divided into separate cells, connected by individual pipes to a vacuum system.įiltrate piping can be arranged outside or inside of the drum. Everything happens during one revolution of the drum: with filter cake forming, cake drying, filtrate discharge and cake discharge for continuous production. The drum filter’s basic operating principle is easy. The Dorr-Oliver Vacuum Drum Filter has high capacity, and runs very efficiently to create excellent filtrate clarity and effectively wash cakes.
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