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AssigneeSd Filtration A/S
InventorsUlrik Johansen, Michael S. Bundgaard, Keld B. Andreasen
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An outlet (3) for fluid feed of a first membrane module (1a) is connected to a fluid inlet (2) of a second membrane module (1b), and if further membrane module(s) is/are present, the outlet (3) for fluid feed of a previous membrane module (n−1) is connected to the fluid inlet (2) of a following membrane module (n), and for the last membrane module (n), the outlet (3) for fluid feed is connected to the fluid inlet (2) for fluid feed of the first membrane module (1a). An amount of fluid feed is continuously pumped with pressure PB through a loop of n membrane modules that are serially connected, the fluid feed and permeate flow concurrently through each of the n membrane module(s), generated permeate is continuously drained from each membrane module through a permeate outlet, permeate pressure at the permeate outlet of each membrane module is controlled within a range.
Apparatus for cross-flow membrane filtration comprising a plurality of n membrane modules (2, . . . , n) and a pump, where a membrane module (1) positioned immediately downstream of the pump is named a first membrane module (1a),
The apparatus according to any previous claims, wherein at least one of the membrane modules is positioned above at least one of the other membrane modules, so that the fluid feed is pumped upwards when passing from one membrane module to the following membrane module.
Method for filtrating a liquid in an apparatus for cross-flow membrane filtration comprising:
Dependencies are inferred from the claim text.