Description
ANDRITZ rotating drum screens – Girapac and Girasieve – are enclosed, compact, and stand-alone units, for pre-treatment of industrial and municipal wastewater.
These rotating drum screen provides high solid/liquid separation, as well as sieving, desanding, degreasing, and additionally, the Girapac allows compacting and bagging of waste in one unit.
Operating Principle
The effluent feeds a distribution tank before passing over the upper part of the filter drum. Then, it passes through the filter screen, and waste particles larger than the mesh are deposited on the drum and carried away towards the discharge zone. The particles removed when coming into contact with the scraper drop into the screw compactor. The water falls through the lower part of the drum, ensuring self-cleaning of the filter screen by eliminating the remaining impurities. An internal washing ramp is used to complete the cleaning of the drum.
In the Girapac system, the waste is conveyed by a shaftless screw towards a compacting zone and then drops into a plastic bagging unit. Filtrates generated in the compacting zone are guided to the drum filtrate tank.
Girapac – Rotating drum screen with screw compactor
