Municipal waste water needs to be treated to keep the environment good to live in. As it originates exactly there where people live, the treatment should be done as close as possible to the source. With growing cities the footprint of these plants and the quality of effluent needed have given more and more interest in compact waste water treatment plants.

In a growing number of plants submerged membranes are applied to improve them to Membrane Bioreactors (MBR). However cleanability and maintenance are not ideal in these plants, as the membranes are difficult to reach. Uniform distribution of membranes and the ability to reach every square meter of the membrane area are essential for optimal operation and keeping a plant running satisfactory.

The Norit Airlift™ MBR configuration offers a membrane solution outside the reactor allowing the maintenance of the plant to be simple and clean. Due to the inside out configuration of membrane filtration all membrane area is subject to the same process conditions.
Energy consumption is at the same level of submerged membranes or even less, due to the efficient usage of process conditions for flux enhancement.

Norit X-Flow’s tubular 5 mm UF membrane will allow a bioreactor to run up to 15 g/l MLSS biomass.
Norit X-Flow’s 5 mm tubes found their way in MBR applications in the municipal and industrial market
in areas such as:

• Municipal WWTP
• Food industry

The NoritX-Flow tubular membrane modules are being produced with ISO 9000 certification.