Water and Wastewater Membrane Protection

Water and Wastewater Membranes need to be protected against fibrous debris that not only create excessive membrane cleaning cycles and labor intensity, but too often abrade & damage the membrane surfaces, as well as clog the aeration manifolds that scour the membranes. Pre-Screening has become extremely important in protecting both membrane warrantees and membrane efficiency. This paper emphasizes the importance of fine screening with data showing how short, fine cotton-wool fibers, hair & filamentous algae will pass through 3mm and 2mm aperture screens and “recombine” downstream into stringy, rag type debris that increases maintenance and membrane cleaning cycles. Pre-Screening + Membrane Filtration is a “Process!”