ROTARY SIEVING DRUM

Drum Screen

Technical data :

The key part of the system is a filtrating rotary drum with a mesh opening ranging from 0.25 to 2 mm.The liquid enters the system through a flange DN 200 in the mid part of the tank.Once the liquid has crossed the distribution tank, it overflows outside on the upper part of the drum.Water flows through the grid whereas solids settle and are discharged by means of a scraper.Filtrate liquid passes through the drum upstream and assures the cleaning of the filter.The internal deflector impels the liquid from being ejected on solids.

Operation Principals :

The rotary sieving drum consists of one stainless steel frame and tank, one filtrating drum with filter mesh opening ranging from 0,25 to 2mm (diameter = 631 mm – length = 600, 1 000, 1 500, or 2 000 mm). As an optional feature, it can be equipped with an internal washwater spray bar for difficult effluents (one drive unit +one scraper, adjustable by means of a spring). This adjustable system allows constant pressure and wear compensation.Flow rates are given for effluents which contain a maximum of 200 mg/l of solids and not containing grease and fibers.If your effluent is different, please contact us.

Design parameters:
– minimum and maximum size of solid particles
– proportion of each size of particles if effluent not homogeneous
– relative viscosity (oily, greasy, sandy, fibrous…)
– suspended solids concentration in mg/l
– effluent volume to be treated in l/s (or m3/h)