Fully Automatic Continuous Rotary Drum Screen For Municipal Wastewater Treatment Plants

Mechanical grilles are essential pre-treatment equipment in sewage treatment systems, primarily designed to intercept solid impurities such as branches, plastic bags, and debris in wastewater. This prevents these materials from entering subsequent treatment units, avoiding blockages or damage to pumps, pipelines, and other critical equipment.

This drum spiral type equipment features a round screening drum as the screen surface, installed in the canal at a 35° angle with the horizontal plane. When sewage flows into the screening drum from the screen end, debris larger than the screen gap is intercepted and settles on the inner surface. The entire screening drum rotates via motor drive, while a removal brush at the top cleans the screening surface with a flushing mechanism. Intercepted materials are flushed into the central material groove, lifted by a conveying screw rod, and discharged through a material box or conveyor after squeezing and dewatering.