Klass Filter GmbH
About
Headquartered in Eresing, Germany and operating for over four decades under Managing Director Georg Klass junior, Klass Filter GmbH engineers continuous self-cleaning filtration systems that operate without backwashing cycles, disposable filter media replacements, or parallel standby units. The company's technology portfolio centers on three product lines: the Klass Grobfilter (coarse filter) handles preliminary solid-liquid separation using automatic height adjustment that positions the filter element directly below the water surface, the Klass Zykonfilter (jet wing liquid filter) achieves 25-micrometer fine filtration by simultaneously capturing floating, suspended, and sedimentary solids in a single continuous pass, and the Klass Wendelfilter (spiral filter) provides continuous sludge dewatering and thickening for digestate, fermentation residues, and agricultural manure. The Klass Flow Regulator optimizes throughput in water recovery circuits. Combined filter systems integrating multiple technologies are available as rental units for on-site evaluation. Each system delivers reported energy savings up to 90% and waste disposal cost reductions reaching 80% versus conventional alternatives. Klass Filter serves municipal and industrial wastewater treatment, biogas facilities, metal processing water treatment, laundry wastewater, and IBC container washing operations. The R&D division collaborated with Fraunhofer ILT on the SimConDrill project targeting microplastics removal through laser-drilled micro-screens, and with Münster University of Applied Sciences on decentralized manure processing and nutrient separation. The company received the German Sustainability Award and the Bavarian Innovation Prize.
Key Products
Preliminary coarse filtration separating large solid contaminants from water using automatic height adjustment that positions the filter directly below the water surface
Fine filtration separating floating, suspended, and sedimentary solids larger than 25 micrometers in a single continuous process step with no backwashing or filter changes required; serves as alternative to hydrocyclones, decanters, centrifuges, and as pre-filter for ultrafiltration or membrane systems
Continuous sludge dewatering, thickening, fine separation, and solid/liquid separation; can supplement or replace press screws, belt filters, and in some cases flotation plants; handles manure, digestate, and fermentation residues
Flow regulation component used in water recovery and purification systems to optimize filtration performance and throughput
Integrated rental system combining multiple Klass filter types for on-site testing and evaluation before purchase; available for limited-time rental
Research project in cooperation with Fraunhofer Institute ILT for removing microplastics from water using laser-drilled micro-screens; nominated for Green Awards 2020
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