Grimmel Wassertechnik GmbH
About
Grimmel Wassertechnik GmbH is a family-owned German engineering firm headquartered in Ober-Mörlen, approximately 30 km north of Frankfurt, specializing in mechanical wastewater treatment equipment since 1993. The company emerged from the sewage technology division of Industriebau Ober-Mörlen (IBO), founded by Walter Grimmel, and holds multiple patents in the mechanical sewage treatment sector. Their product line centers on screening systems: the counterflow coarse screen GSR handles gap widths from 15 to 150 mm for channel widths up to 2.5 m and depths up to 8 m, while the counterflow fine screen GSFR provides fine screening with circulating screen rakes. The flat fine screen series comes in hydraulic and electric drive variants for different channel dimensions, and the fiber screen GriZor targets fibrous material capture. For integrated pre-treatment, the compact unit GriKo and cylindrical grit separator WS combine screenings removal, grit separation, and grease removal in single installations. The grit washer SWA removes organic content from grit with minimal water consumption, and the screenings wash press RGWP achieves high-efficiency washout and volume reduction of screenings material. Grimmel also manufactures continuous screw presses for sludge dewatering, longitudinal and circular scrapers, grit feeding arrangements, mixing reactors, and conveyors. All equipment is designed and produced under Made in Germany standards with Ecostep certification covering ISO 9001:2015, ISO 14001:2015, and ISO 45001:2018. The company provides custom system solutions and maintains a fleet of rental machines for emergencies or planned maintenance outages.
Key Products
Mechanical screen with gap widths 15-150 mm for channel widths up to 2.5 m and depths up to 8 m, removing coarse solids from wastewater flow
Submersible fine screen with circulating screen rakes for gap widths 10-150 mm, providing fine screening of wastewater
Fine screen for channel depths 1.3-2.5 m and widths up to 2.5 m, using hydraulic drive for reliable operation
Electric-drive fine screen with gap widths 1-6 mm for channel depths up to 1.3 m, featuring integrated screenings wash press
Specialized screen designed to capture fibrous material in wastewater streams
Screening system for sludge and screenings receiving at treatment plants
Integrated compact unit combining screenings removal, grit separation, and grease removal in a single cylindrical vessel
Combined mechanical pre-treatment unit providing screening, grit removal, and grease separation
Washes organics from grit with extremely low water consumption, producing clean, drainable grit
Washes, compresses, and transports screenings material with high faecal matter removal efficiency, reducing disposal volume and weight
Continuous sludge dewatering screw press for municipal and industrial WWTPs with simple design, low maintenance, and low power consumption
Custom scraper systems for sedimentation tanks to remove settled sludge and floating material
System for controlled feeding of grit material in treatment processes
Chemical mixing reactor for dosing and flocculation processes in wastewater treatment
Transport conveyor system for moving screenings and grit to disposal or further processing
Temporary screening and pressing equipment available for emergencies or planned reconstruction periods
Custom-designed control systems to operate screening and treatment machinery optimally per on-site conditions
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