Application
RSK step screens are used in the process of preliminary mechanical wastewater treatment. Their primary function is the effective capture of solid contaminants before the wastewater is directed to subsequent treatment stages.
The use of step screens helps protect downstream equipment from overload, mechanical damage and blockages, which translates into higher efficiency and greater safety of the entire treatment process.
Areas of application for ESMIL Step Screens:
- municipal wastewater treatment,
- industrial wastewater treatment plants.
Design range
We manufacture step screens designed for installation in channels up to 3.2 m deep and 2.3 m wide – depending on project requirements.
Technological advantages of ESMIL Step Screens
- Self-cleaning filter surface design – the movement of lamellas relative to each other eliminates the need for additional cleaning mechanisms such as brushes or water flushing systems.
- Narrow bar spacing and filtration through a “carpet” of lifted screenings significantly increase the efficiency of capturing fine contaminants.
- Reduction of spacing to 1 mm directly above the channel prevents solids from falling back into the wastewater flow.
- Screen lamellas made of 2–3 mm thick sheet metal ensure high throughput capacity.
- Adaptable installation in channels of various dimensions, with dedicated covers to close free spaces.
- Aeration system at the bottom of the screen prevents accumulation of solids under the lamellas.
- Electrical protection against overloads and voltage surges ensures stable and safe operation.
- Enclosed housing further limits the spread of unpleasant odors.
- Simple, well-thought-out design provides easy access to all key components.
- Manufactured from stainless steel AISI 304 or AISI 316, with additional anti-corrosion protection, ensuring resistance to aggressive wastewater environments.
Construction of the ESMIL Step Screen
Additional equipment
- SCP Screw Compacting Press – a device designed for washing and dewatering screenings. It enables significant volume reduction, thereby lowering transportation and disposal costs.
- Screw Conveyor – used for transporting materials generated during the wastewater treatment process, such as screenings, washed sand and dewatered sludge.
