Rudolf Messner Umwelttechnik AG

RMU AG (Rudolf Messner Umwelttechnik), headquartered in Adelsdorf, Bavaria, Germany, is a family-owned manufacturer specializing in biological process and aeration technology for municipal and industrial wastewater treatment. The company introduced the world's first large-format membrane aeration panel in 1981 and has since installed MESSNER® Aeration Panels in over 1,000 wastewater treatment plants worldwide, with more than 250 installations of its MESSNER® ICS control system achieving stable effluent values and minimized energy demand. The core product line includes MESSNER® Classic fine-bubble aeration panels featuring thermoplastic polyurethane (TPU) membranes without plasticizers, rated for up to 20 years of service life, with all underwater steel components in acid-proof stainless steel (A4). The MESSNER® Compact variant offers a narrower profile for flexible tank geometry fitting. MESSNER® ReNew provides a factory-refurbishment exchange program with full 5-year warranty. MESSNER® Control delivers dynamic, load-dependent oxygen transfer regulation using online measurements (NH₄, NO₃, inlet quantity) as an open, transparent SPS/DCS-integrated solution. The MESSNER® LiftOut system enables aeration panel removal from tanks that cannot be emptied, while the MESSNER® DosingUnit provides in-operation acetic acid maintenance cleaning. All MESSNER® products are PFAS-free and available as CO₂-neutral certified options.