SCREENING APPARATUS FOR WATER TREATMENT WITH MEMBRANES

摘要

A static screen used upstream of a membrane assembly within a water treatmen t system has a screening surface with a number of openings distributed over it s area. Liquid flows through the screening surface to reach the membrane assembly. Various shapes of screening surfaces are described including undulating panels and geometric shapes. Methods for cleaning the screen are described including aeration and backwashing. Various treatment systems or process designs incorporating the screen are described.