MEMBRANE CLEANING WITH PULSED AIRLIFT PUMP

摘要

A method of cleaning a membrane surface immersed in a liquid medium with a fluid flow, including the steps of providing a randomly generated intermittent or pulsed fluid flow along the membrane surface to dislodge fouling materials therefrom. A membrane module is also disclosed comprising a plurality of porous membranes (6) or a set of membrane modules (5) and a device (11) for providing a generally randomly generated, pulsed fluid flow such that, in use, said fluid flow moves past the surfaces of said membranes (6) to dislodge fouling materials therefrom.

主权项

1. A method of cleaning a membrane surface immersed in a liquid medium and disposed within a membrane module of an array of membrane modules comprising:
introducing a gas to a chamber of a device positioned below the membrane surface, a single device positioned below each single module in the array of membrane modules and each single module in the array of membrane modules associated with a single device, such that the liquid medium in the chamber is displaced downward by the gas until a hydraulic seal is broken, whereupon a substantial portion of the gas introduced into the chamber is released to the membrane surface as a bubble slug.