Waste Water Treatment
Rugged and energy-efficient
System solutions by Stelzer Rührtechnik for digestion tower systems (= biogas production), nitrification, denitrification, flocculation, precipitation, activation basin, sludge storage, pumping stations, sand traps, buffers and chemical additive tanks, trough mixers and final storage
- Floating layer intake
Stelzer Rührtechnik recommends top-entry and side-entry agitators for waste water treatment plants, depending on the process step. We do not just use standard solutions but consequently apply individual adaptations and further developments that put our agitators ahead of competing products.
Highly efficient axial flow and counter-current flow impellers with optimised, low shear rates ensure maximum product protection. Side-entry agitators have reliable drive and sealing systems and can on request be equipped with fast change device to replace seals on a full tank. The top entry agitators are furthermore equipped with shaft settling device for the protection of the agitator shafts, water-cup sealing technology with easy monitoring and overhung agitator shafts without a bottom bearing with up to 25 m shaft lengths. Stelzer Rührtechnik calculates the agitators and their axial forces, bending and torque already in the design phase, unlike conventional systems that are more prone to faults. The harmonic resonance frequencies (critical rotation speeds) are eliminated from the working range of the agitator by design.