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Application Separation of sand and other solids from waste water
Characteristics The machine is equipped with a series of parallel plates which lift the solid materials from the channel bottom to the top.
Operation The grit settled on the bottom is dragged by the scrapers which have a reciprocating motion out of the water. Before being discharged, the grit is washed with water.
Materials Compact equipment in hot dip galvanized carbon steel or stainless steel.
Installation In a concrete channel.
Channel width From 300 to 1500 mm.
Separation Starting from 200 microns
Advantages The grit scrapers do not lay on the bottom, therefore they are not subject to wear.



The water to be treated is conveyed into the feed hopper where the sand and any other solid particles decantation process takes place.

The grit scrapers, thanks to their reciprocating motion, lifts the solid materials from the hopper to the discharge outlet.

After having been separated from water, the sand is washed with clean water by a spraying nozzle; the dirty water returns to the tank and the washed sand is lifted by the screw. 

At the first starting, before the grit is lifted and evacuated outside the machine, the solid materials must begin settling down to form a bed of grit.
When a sufficiently thick bed of grit is formed, the equipment begins evacuating the solid material (grit).


1.1 Waste water delivery to the grit separator :m³/h (*)
1.2 Suspended solids :% (*)
1.3 Size of the suspended solids to be separated :micron >200
1.4 Channel width :mm. (*)
1.5 Slope 20°
1.6 Length of the channel or discharge elevation :mm. (*)
1.7 Scrapers stroke :mm. 160
1.8 Scrapers lift :mm. 80
1.9 Number of cycles per minute :no. 12
(*) to be advised when asking for a quotation