Manufacturer and installation partner for scraper bridges, tank internals and aeration and circulation technology for wastewater treatment plants and waterworks.
Karo Anlagenbau GmbH
Essen (Oldenburg)New on Amplifa
About us
Karo Anlagenbau GmbH was founded in 2013 in Essen (Oldenburg) and specialises in the technical equipment of wastewater treatment plants and the installation of waterworks. The company manufactures scraper bridges as full-wall bridge systems from its own production – as longitudinal scrapers for tanks with longitudinal flow and as circular scrapers for circular primary and secondary clarifiers – with all variants of drive technology (central drive, positive drive with rack/dog pinion/pinion) and sludge removal (blade and suction scraper systems). Further products are stainless steel box channels, submerged effluent pipes, rigid inlet systems, tank internals for process optimisation, aeration systems for fine-bubble compressed-air aeration, and the floating sludge tilt weir, which is in use in more than 250 plants. The workshop with 1,000 m² of storage and production space works with stainless steel 1.4301/1.4571 and hot-dip galvanised or coated steel; scraper bridges leave the factory pre-wired with travel gear, slewing-ring bearing and slip-ring body. Installation and commissioning, conversion of existing plants and technical maintenance services are carried out by four in-house installation teams with fully equipped workshop vans; PLC control technology is developed in-house.
- Site
- Essen (Oldenburg)
- Processes
- Scraper construction (longitudinal and circular scrapers, scraper bridges), Full-wall bridge systems made of bent sheets with laser cutting (connection holes/cut-outs), Stainless steel box channel (effluent channels, welded on both sides), Submerged effluent pipes (polygon shape, miter cuts), Floating sludge tilt weir (SS-tilt weir system), Aeration systems fine-bubble compressed-air aeration (tube, disc, oval plate and, Circulation with submersible motor mixers (propellers up to 2,500 mm diameter), Baffle board bridge for circulation (full-wall girder bridge)
- Materials
- Stainless steel 1.4301, Stainless steel 1.4571, Steel, hot-dip galvanised, Steel, galvanised, coated, Concrete, Steel, galvanised and coated
- Certificates
- ISO 9001
- Founded
- 2013
- Employees
- approx. 20 (self-rep
- Industries
- Wastewater and water technology (wastewater treatment plants, waterworks), Sludge treatment, Municipal wastewater associations and urban drainage utilities
- 01
Design (3D CAD)
- 02
Sheet metal working (bending, laser cutting)
- 03
Welding and pre-assembly
- 04
Surface protection (hot-dip galvanising/coating)
- 05
Factory pre-assembly incl. cabling
- 06
On-site installation
- 07
Electrical/PLC control and commissioning
- 08
Maintenance and service
Materials and processes
Stainless steel 1.4301
Standard material for scraper bridges, box channels, inlet systems and pipework in wastewater plant construction.
Stainless steel 1.4571
Acid-resistant stainless steel for bridge systems with increased corrosion resistance requirements.
Steel, hot-dip galvanised
For racks, rails of the positive drive and scraper bridges with long-lasting corrosion protection.
Steel, galvanised and coated
Combined surface protection for bridge systems according to customer specification.
Concrete
Bridge material for centrally driven scraper systems in addition to steel bridges.
Site
Essen (Oldenburg)
DEHeadquarters, production, warehouse, installation, service
- Materials
- Stainless steel 1.4301/1.4571, steel hot-dip galvanised/coated
- Production hall 1,000 m²
- 3D design system (CAD, since 2015)
- Laser cutting for connection holes/cut-outs
- 4 workshop vans for installation teams
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Scraper construction (longitudinal and circular scrapers, scraper bridges)Installation | – | Bridge length up to 52,500 mm | – | – | Stainless steel 1.4301, Stainless steel 1.4571, Steel, hot-dip galvanised |
| Full-wall bridge systems made of bent sheets with laser cutting (connection holes/cut-outs)Joining | – | Bridge length up to 52,500 mm | – | – | Stainless steel 1.4301, Stainless steel 1.4571, Steel, hot-dip galvanised/coated |
| Stainless steel box channel (effluent channels, welded on both sides)Joining | – | – | – | – | Stainless steel |
| Submerged effluent pipes (polygon shape, miter cuts)Installation | – | – | – | – | Stainless steel |
| Floating sludge tilt weir (SS-tilt weir system)Installation | – | Tilt weir 3 m wide | – | – | Stainless steel |
| Aeration systems fine-bubble compressed-air aeration (tube, disc, oval plate andInstallation | – | – | – | – | – |
| Circulation with submersible motor mixers (propellers up to 2,500 mm diameter)Installation | – | Propeller up to 2,500 mm diameter | – | – | – |
| Baffle board bridge for circulation (full-wall girder bridge)Installation | – | 13500 mm | – | – | Stainless steel 1.4301 |
| Scrapers with positive drive (rack/dog pinion/pinion, circular pre-bending of rack andInstallation | – | – | – | – | Steel, hot-dip galvanised |
| Centrally driven scrapers / rake mechanismsInstallation | – | – | – | – | – |
| Rigid inlet systems (stainless steel cylinders, welded units, pre-assembled/bolted on site)Installation | – | – | – | – | Stainless steel |
| Tank internals for process optimisationInstallation | – | – | – | – | Stainless steel |
| Pipework construction (air ducts, compressor station piping, pumping station installation, heatInstallation | – | – | – | – | Stainless steel (SS piping) |
| Blower stations/compressor stations (assembly, connection, commissioning of rotary lobe compressors)Installation | – | – | – | – | – |
| Rehabilitation/conversion of scrapers (removal/renewal of floor blades, suction scraper attachments,Installation | – | – | – | – | Stainless steel, Steel |
| Technical maintenance service (pulling of aeration grids and floor blades, repair, overhaul)Installation | – | – | – | – | – |
| Design/execution drawings in the 3D systemEngineering | – | – | – | – | – |
| PLC programming and switchgear/control systemsEngineering | – | – | – | – | – |
4 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Production hall (storage and production space) | – | 1 | 1,000 m² | 2015 | Essen/Oldenburg, Johannes-Gutenberg-Str. 12 |
| 3D design system (CAD) | – | – | – | 2015 (Einf | Essen/Oldenburg |
| Laser cutting (creation of holes/cut-outs in sheets) | – | – | – | – | Essen/Oldenburg |
| Workshop van (fully equipped, for installation teams) | – | 4 (number | – | – | mobile use |
Additional services
Reference customers
Quality
Quality is ensured by factory pre-assembly (including floor blades pre-assembled at a scale of 1:1) and inspection of installed components on site, e.g. by diver deployment to check the seating of floor blades. Certifications are not published.
| Evidence | Essen (Oldenburg) |
|---|---|
| ISO 9001 |
History
- 2013
Founding of Karo Anlagenbau GmbH in July 2013; first floating sludge tilt weir installations in Rehden and Pirmasens Land in Nov/Dec 2013.
- 2014
Since June 2014, the baffle board bridge (circulation bridge) has been in operation at the Wiesmoor wastewater treatment plant.
- 2015
Occupancy of the new production hall in Essen (Oldenburg) with 1,000 m² in August 2015; design of execution drawings in the 3D system.
- 2021
Delivery of two large circular scrapers with a bridge length of 52,500 mm to Karlsruhe.