- Compact design
- High efficiency
- High reliability
- Easy handling
Submersible recirculation pump type ABS XRCP
Streamlined designs for large flows
The XRCP is Sulzer’s premium range of recirculation pumps, specifically designed for efficient pumping and recirculation of activated sludge in the denitrification/nitrification process of a wastewater treatment plants. These compact and easy-to-handle pumps are equipped with Premium Efficiency motors and designed for large flows and low heads. Compared to conventional axial flow pumps, recirculation pumps do not require expensive structures in the tank, such as inflow chamber and a large rising pipe.
- Recirculation of activated sludge in wastewater treatment plants
Main design features
- Easy installation
- Self-cleaning propeller
- As an option Triple seal system with dual oil chamber enhance motor and gearbox protection for full peace of mind
- Premium-efficiency IE3 motors or equivalent
- Seal monitoring using multiple sensors
- Thermo-Control System (TCS) provides timely warnings and auto switch-off
The unit is lowered along a guide tube and connected to the pipeline by an automatic coupling system.
|Max. flow||1.68 m3/s (25'680 USgpm)|
|Max. head||1.63 m (4.7 ft.)|
|Discharge sizes||DN 250-800 (10"-31")|
Mixed liquor recirculationWhen denitrification is followed by a physically separated nitrification step, the nitrates formed during nitrification must be recirculated. The nitrates are pumped back into the denitrification step, where the anoxic process splits the nitrate molecules into nitrogen and oxygen. This frees the nitrogen into the air. This application is best served by submersible recirculation pump types ABS XRCP and RCP, the submersible mixed flow column pump type ABS AFLX and the submersible propeller pump type ABS VUPX.
Tertiary treatmentTreated wastewater may occasionally require further treatment. Local discharge rules may pose strict limits that cannot be fulfilled by even the most effective process, or a higher quality of effluent may be requested for its reuse. When tertiary treatment is needed, various levels of filtration can be applied, including very fine filtration. Often, however, a final step of mixing and aeration is sufficient to achieve the target. When this is the case, Sulzer's submersible mixer types ABS XRW and RW can be used, along with submersible aerator type ABS TA–TAK and disc diffuser system types ABS PIK, DS and Sucoflow.