Sand trap designed to separate sand, gravel and fast-settling solid mineral particles from waste water. The sand trap prevents the formation of deposits in channels and pipelines and protects the technological equipment of treatment facilities from abrasive effects.
There are two types of grit traps:
1) cylindrical underground, used in storm water treatment plants;
2)ground vertical, which have found universal application.
THE PRINCIPLE OF OPERATION
Wastewater is fed into the cylindrical part of the ground sand trap tank, where the sand settles in the screw conveyor tray.
The screw conveyor transports the settled sand into the unloading chute and then to the receiving container. Waste water cleaned of sand and mineral particles is discharged through the upper discharge pipeline.The body of the surface sand trap and the transport auger are made of stainless steel or acid-resistant steel. The body of the horizontal underground sand trap is made of iberglass reinforced plastic.