- 22 August 2007 -

Submerged membrane-module for wastewater

Microdyn-Nadir has developed a new membrane-module for submerged water treatment systems. The new BIO-CEL module is a membrane bioreactor (MBR) designed specifically for wastewater treatment.

The BIO-CEL module is submerged directly into the activated sludge and the treated wastewater is drawn out by vacuum. The direction of filtration is outside - in. During the filtration process the activated sludge is de-watered and the sludge must be removed out of the module. The BIO-CEL module is equipped with an additional aeration system that induces an up-flow (cross-flow) alongside the membranes, which in turn, helps remove the sludge.

The module combines the advantages of classic hollow fibre and flat sheet submerged modules, the company says. The module design maximizes the surface area by using self-supporting, back-flushable flat membrane sheets - back-flushable because of the patented lamination process between the hydrophilic polyethersulphone (PES) membrane and the polyester drainage layer. The 2 mm thin membrane sheets also allow for a high packing density and are light weight because they do not need a supporting plate.

www.microdyn-nadir.de