The first phase of microfiltration solid (aka drum microfiltration) is a solid-liquid separation equipment, widely used in aquaculture, water plants, urban sewage, paper making, textile, printing and dyeing, chemical and other raw water or sewage treatment liquid separation treatment. Mainly by the cabinet assembly, roller assembly, anti-clean components, four part liquid level control components. Roller assembly consists of a roller frame (which may be made of metal or plastic) and screen (stainless steel mesh or nylon mesh) components, the main role is to filter the water of small suspended matter (fish feces, bait, pulp fiber, sand). algae, Daphnia and other zooplankton.