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US 2002/0162784 A1Published application
Membrane separator
OwnerRobert Kohlheb, Axel Muhl +2inventors
InventorsRobert Kohlheb, Axel Muhl, Zsombor Rajkai, Gerhard Braun
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OwnerRobert Kohlheb, Axel Muhl +2inventors
InventorsRobert Kohlheb, Axel Muhl, Zsombor Rajkai, Gerhard Braun
Estimating the term…
The invention concerns a membrane separator for separating out low-colloidal and low-molecular contaminants as well as polyvalent ions (heavy metals) from aqueous media by means of a wound membrane element in which a corrugated distance piece (spacer) is positioned between the layers of the membrane windings. In cross-section the spacer (20, 30) has U-shaped crests (21) and troughs (22) with the legs (26) of the U-forms approximately perpendicular to the membrane surfaces (28), or triangular crests (31) and triangular troughs (32). The spacer (50) can consist of a plastic foil having a corrugated structure on both sides offset by one half-corrugation with respect to each other and where the crests (54, 54′) on both sides make contact with the layers of the membrane windings (4, 6). To increase the turbulence in the flow, the crests (56, 72) can have turbulence elements (60, 76). The membrane separator according to the invention increases the effective surface area of the membrane, minimizes the risk of fouling and reduces the volumetric flow rate.
Membrane separator for separating out low-colloidal and low-molecular contaminants as well as polyvalent ions (heavy metals) from aqueous media by means of a wound membrane element in which a corrugated distance piece (spacer) is positioned between the layers of the membrane windings, characterized in that in cross-section the spacer (20, 30) has U-shaped crests (21) and troughs (22) with the legs (26) of the U-forms approximately perpendicular to the membrane surfaces (28), or triangular crests (31) and triangular troughs (32).
Membrane separator for separating out low-colloidal and low-molecular contaminants as well as polyvalent ions (heavy metals) from aqueous media by means of a wound membrane element in which a corrugated distance piece (spacer) is positioned between the layers of the membrane windings, characterized in that the spacer (50) is made from a plastic foil having a corrugated structure on both sides offset by one half-corrugation with respect to each other and where the crests (54, 54′) on both sides make contact with the layers of the membrane windings (4, 6).
Membrane separator according to one of the preceding claims, characterized in that the angle α between the membranes and the flanks of the crests is 10° to 60°.
Membrane separator according to one of the preceding claims, characterized in that the distance between adjacent membrane layers (4, 6) of the wound element is about 2.032 mm, the height H of the ridge (82) about 0.406 mm, and the height h of the flow channel (74) about the 0.975 mm.
Membrane separator according to one of the preceding claims, characterized in that the ridge spacing A between successive projections (80) is about 2.438 mm, and the length L of the projections between the points (88, 88′) about 1.626 mm.
Dependencies are inferred from the claim text.