In MemPulse™ B40N UF MBR modules, enhanced N membrane fibers are bound together in modules using a unique dual-potting system, part of a compact modular rack assembly, and submerged in a separate membrane tank. Mixed liquor is fed into the membrane tank and the membranes are air scoured. The filtrate pump then draws water through the fiber wall, filtering it from the solids, and pumps the filtrate away for use elsewhere. MemPulse™ Membrane Bioreactor (MBR) Filtration Systems use a unique pulsed, plug-flow aeration to greatly increase process efficiency and reduce energy use. A continuous air flow is evenly distributed to each aeration device, where it is accumulated and then released as a pulse of large bubbles that increase in size as they move up the membrane fibers. The size and the random nature of the large bubbles or slugs of air prevent trash and solids from building up by pushing debris away from the membrane fibers at the surface. DuPont's MemPulse™ filtration system leads the industry in energy consumption, with specific energy use as low as 0.08 kWh/m³, and delivers superior filtration performance while reducing aeration energy by up to 60%.