Drum screen

GRS

CATEGORY SEWAGE
TYPOLOGY SCREENS

WHEN TO USE IT

The GRSC-type rotating drum screen for micro-screening is installed on small and medium-sized civil or industrial wastewater treatment plants. It is particularly suitable for solid-liquid separation in the treatment of liquid waste from the food, textile, tanning, petrochemical and urban sewerage industries. For industrial uses, it is used for the recovery of recyclable materials.

HOW IT IS MADE

The screen is designed and built in the SERECO factory and consists of the following main components: a body in press-bent stainless steel sheet, a rotating drum in which the cylindrical part is made up of wedge wire bars or perforated sheet metal or other suitable filtering medium, a hollow shaft with the washing water of the drum flowing through the inside while its exterior supports the rotating drum, a filling blade, a system of washing nozzles, a series of mechanical seals and a gearmotor.

HOW IT WORKS

The incoming water, lapping the filtering bars of the drum, deposits the solid elements suspended in it. These are dragged by friction in rotation up to the cleaning blade which, detaching them from the drum, diverts and conveys them into a special container. The blade, which must exert a suitable pressure on the drum to allow the correct detachment of the filtered material, is connected to an adjustable counterweight system capable of a very sensitive adjustment of the pressure of the blade on the drum. The already filtered water that enters the drum falls by gravity, hitting the rotating drum again from the inside towards the outside and is then conveyed into the special filtered water discharge chamber or directly into the basin for subsequent treatment.