Lanxess doubles membrane production at Bitterfeld site

Lanxess doubles membrane capacity in Germany

9:55 AM, 1st August 2017
For quality assurance purposes, each individual Lewabrane product is checked in an element tester at the Lanxess site in Bitterfeld, Germany.
For quality assurance purposes, each individual Lewabrane product is checked in an element tester at the Lanxess site in Bitterfeld, Germany.

COLOGNE, GERMANY: Lanxess AG said that it has doubled its membrane capacities at Bitterfeld plant in Germany.

The market for reverse osmosis membrane elements is currently projected to continue growing at an above-average annual rate of ten percent (CAGR 2015-2020) in the years ahead. Because the plant was already operating almost at the limit of its capacity, Lanxess decided to double it.

Production of membrane elements for the Lewabrane line is a multi-stage process. It begins with the fabrication of a thin-film composite membrane comprising several individual layers. A polysulfone base layer and an active filter layer are applied on a nonwoven base substrate. The filter layer is made of polyamide and applied in a complex coating process. Produced as flat components, the reverse osmosis membranes are then wound by fully automated autowinders into spiral-shaped elements. This design helps to conduct untreated water towards the membrane surface and to collect the permeate (filtrate).

In addition to the membrane elements plant, Lanxess also operates the world’s largest plant for monodisperse ion exchange resins in Bitterfeld.

“We have expanded the capacity of our plant in Bitterfeld so that we can continue meeting the rising demand for reverse osmosis membrane elements. This step makes us even more attractive as a supplier to major customers,” said Jean-Marc Vesselle, head of the liquid purification technologies business unit at Lanxess.

New Lewabrane ULP range expands membrane portfolio for water treatment

The new Lewabrane RO ULP line is the latest addition. These “Ultra Low Pressure” elements display higher water permeability than the standard elements while offering the same high level of rejection of critical substances. The operating pressure required in the pressure vessel is 40 percent lower, which reduces operating costs. Furthermore, the new membranes are a good option for removing micropollutants from wastewater and drinking water.

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