Deadend Configuration

In the dead-end filtration process, the flow of the wastewater stream is orthogonal to the membrane and no retentate stream is produced. A two-end module is needed (Fig. 12.8a).

As a consequence, the retained colloids and macromolecules build a layer on the membrane surface which has to be removed periodically. This configuration results in an unsteady process which demands a two-end module and is only suitable if the feed suspended solids concentration is low.

Fig. 12.8 Configuration of membrane filtration modules:

(a) dead-end mode, (b) submerged mode, (c) cross-flow mode.

At1 = backwashing period; At2 = chemical enhanced cleaning period.

Fig. 12.8 Configuration of membrane filtration modules:

(a) dead-end mode, (b) submerged mode, (c) cross-flow mode.

At1 = backwashing period; At2 = chemical enhanced cleaning period.

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