CROSSFLOW FILTRATION SYSTEM AND METHOD FOR MEMBRANE FOULING PREVENTION

摘要

The invention relates to filtration of fluids, in particular, to methods and systems for fluid filtration via semipermeable membranes provided with means for their fouling prevention. There is suggested an improved conventional filtration system comprising a pressure pump, membrane module with one inlet port for feed stream and two outlets- for cleaned fluid and for fouled concentrate, by applying an additional reciprocal fluid pulse to the fluid passing through this membrane module, which is achieved via corresponding supplementary means, substantially pressure pumps, diaphragm cylinders, piston type thrust cylinders, hydraulic cushions or hydraulic cylinders, each of them having an individual actuator associated with a control system. There is a further suggested a new and improved method for filtration with simultaneous prevention of membrane fouling based on these supplementary means.