Spiral Membranes
Source: PCI Membrane Systems Inc
Spiral-wound membrane elements may be constructed of many different materials. The basic spiral element is
Spiral-wound membrane elements may be constructed of many different materials. The basic spiral element is constructed of one or more envelopes wound around a perforated central tube. The envelope consists of membrane sheets glued on three sides enclosing permeate carrier material. The permeate passes through the membrane into the envelope and spirals inward to the central tube. Membrane layers are separated by feed channel spacer material. Feed flows across the surface of the membrane in the channels formed by the feed spacers, providing a turbulent sweeping effect and reducing boundary layers at the surface.
PCI Membrane Systems Inc, 1615 State Route 131, Milford, OH 45150. Tel: 513-575-3500; Fax: 513-575-7393.
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