CROSSFLOW FILTRATION SYSTEM AND METHOD FOR MEMBRANE FOULING PREVENTION

摘要

Methods and systems for fluid filtration via semipermeable membranes is provided with means for their fouling prevention. An improved conventional filtration system includes a pressure pump (24), a membrane module (28), an inlet port (30), a concentrate outlet (36) and a filtrate outlet (34). The membrane is cleaned by applying an additional reciprocal fluid pulse to the fluid passing through the module which is achieved via a corresponding supplementary means: pressure pumps (42, 44, 46), diaphragm cylinders (78, 80, 82), piston-type thrust cylinders, hydraulic cushions (90, 92, 94) or hydraulic cylinders (66, 68, 70). Each of them having an individual actuator (48, 50, 52) associated with a control system (54).