Membrane cleaning with pulsed airlift

摘要

Aspects and embodiments of the present application are direction to systems and methods for treating fluids and to systems and methods for cleaning membrane modules used in the 5 treatment of fluids. Disclosed herein is a membrane filtration system and a method of operating same. The membrane filtration system comprises a plurality of membrane modules (5) positioned in a feed tank (36), at least one of the membrane modules (5) having a gas slug generator (11) positioned below a lower header (7) thereof, the gas slug generator (11) configured and arranged to deliver a gas slug along surfaces of membranes (6) within the at least 10 one of the membrane modules (5). The membrane filtration system may further comprise a global aeration system configured to operate independently from an aeration system providing a gas to the gas slug generator. The global aeration system may be configured and arranged to induce a global circulatory flow of fluid throughout the feed tank (36).