NEW RO MEMBRANE ELEMENTS from Lanxess
New reverse osmosis (RO) membrane elements from LANXESS with ASD feed spacers have undergone a trial in Germany’s largest industrial water treatment plant. More than 50,000 cubic meters of water are needed every day for pulp manufacturing at Zellstoff Stendal Gmbh, Arneburg, and this is treated using reverse osmosis and ion exchange resins. The new grades impressed with their performance and consistently high level of rejection. Optimized for applications in brackish water, these Lewabrane-branded elements are characterized by very low energy consumption (LE = low energy) and high fouling resistance (FR = foulingresistant).
One year ago, Zellstoff Stendal launched a project to test LANXESS’S newly developed Lewabrane ASD range of membrane elements. This involved installing conventional reverse osmosis (RO) elements with a standard feed spacer and FR elements with LANXESS’S new ASD spacer in parallel in a single pressure vessel. Feed spacers are essential components for spirally wound membrane elements. They are made of polymer material and are optimized to ensure constantly good performance for a wide range of raw water compositions and various process parameters. The LANXESS spacers have a special “netting” that reduces biological growth and particle fouling by minimizing dead zones. The netting has an alternating strand design (ASD) of thin and thick filaments, which is what gives the spacer its name.
The company came up with their financial results and reported sales up by almost 30% to EUR 2.5 billion, wherein EBITDA pre exceptionals increased significantly by 25.3% to EUR 367 million and the net income pre exceptionals increased by 75% to EUR 141 million. Following a good second quarter 2017, specialty chemicals company LANXESS continues to expect the highest earnings in the company’s history for the current financial year.