Sülzle Klein GmbH
About
SÜLZLE KLEIN GmbH, based in Niederfischbach, Germany, is a plant engineering company in the SÜLZLE Group specializing in sewage sludge thickening, dewatering, and drying. The company traces its origins to 1905, developed its first belt filter press in 1966, and established its environmental engineering division as an independent entity in 1998. With approximately 50 employees and over 4,000 systems installed worldwide, Sülzle Klein designs, manufactures, and configures both standardized and customized equipment for municipal and industrial wastewater treatment. The solidXdrain gravity belt thickener achieves separation efficiencies up to 99 percent while thickening surplus sludge to 5 to 8 percent dry solids with low polymer consumption and energy-efficient drives. The solidXpress belt filter press dewaters sludge to 20 to 35 percent dry solids by passing slurry between two rotating sieve belts around 14 press rollers of progressively decreasing diameter, building pressure up to 20 bar for continuous fully automatic operation with low wear and noise. A notable reference project at Buchenhofen replaced centrifuges with Sülzle Klein belt thickeners, saving 2.16 million kWh per year. The Pro-Dry belt dryer provides thermal sludge drying for volume reduction and beneficial reuse or safe disposal, complemented by the Compact-Dry and Conti-Dry extended drying options. The solidXfloc polymer dosing station automates flocculant preparation and conditioning for thickening and dewatering processes. The company provides comprehensive service and spare parts support across its installed base.
Key Products
Thickens municipal surplus sludge to 5-8% dry solids using gravity filtration through special sieve belts, achieving up to 99% separation efficiency with low polymer consumption and energy-efficient drives.
Dewaters municipal surplus sludge to 20-35% dry solids by passing slurry between two rotating sieve belts around 14 press rollers of decreasing diameter, increasing pressure up to 20 bar for continuous automatic operation.
Dries sewage sludge using belt dryer technology for thermal volume reduction and safe disposal or beneficial reuse of dried sludge.
Automated polymer dosing and preparation station that provides optimal flocculant conditioning for sludge thickening and dewatering processes.
Ongoing maintenance, repair, and replacement parts support for all Sülzle Klein equipment installations worldwide.
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