The challenge

After twelve years of operation, a modernization of the treatment plant was needed for the removal of nitrogen and phosphorous pollutants, as well as an enlargement by another 100'000 PE (population equivalent).

After a thorough quality and efficiency analysis, Sulzer was selected to make the final proposal for the plant modernization.

The solution

During 2011-2013, we finalized the design and in December 2013 we signed the significant contract for the delivery of altogether 81 pieces of equipment including turbocompressors, agitators, pumps, flowboosters and mixers.

The delivery and installation of the equipment was started in the second quarter of 2014 and the last submersible XFP pump was delivered to the Krakow wastewater treatment plant in December.

Submersible recirculation pump type ABS XRCP 800
The XRCP 800 is specifically designed for pumping and recirculation of activated sludge in the denitrification/nitrification process of a wastewater treatment plant. This compact and easy-to-handle pump is efficient and reliable.

This was our biggest project in Poland so far and a great challenge for our people. It was rewarding to see how the customer gained even more confidence in the delivered products day by day.

Sales & Project Manager, Sulzer Pumps Wastewater Poland

Customer benefits

Sulzer offers a wide range of aeration systems for municipal and industrial wastewater treatment. Our application and process know-how combined with our unique product portfolio provide customers with high-tech solutions that guarantee efficiency and process reliability at minimal life cycle-cost.

The new Krakow Kujawy plant now has a 25% bigger hydraulic capacity and provides 50% better treatment of biogenic components (nitrogen and phosphorus). The energy consumption has been reduced by more than 20% compared to the original plant.

Product specification

Turbocompressor type ABS HST40-300-1-L

Capacity q 13'000 Nm3/h / 1 unit
Pressure p 60 kPa
Motor power 300 kW
  • HST™ turbocompressor
    The modern and silent HST™ turbocompressor features an advanced design with proven magnetic bearing technology and a high-speed motor driven through a built-in frequency converter.

  • Scaba top mounted agitator
    Scaba top-mounted vertical agitators are used for mixing and agitating process liquids in many industries, including wastewater and industrial applications.

  • Scaba side mounted agitator
    Scaba side-mounted horizontal agitators are ideal for mixing and agitating process liquids in demanding industrial applications.

  • Flow booster type ABS SB
    The reliable, energy efficient low-speed submersible unit can be used in a wide range of applications in wastewater treatment plants.

  • Submersible mixer type ABS XRW
    The XRW mixer range is Sulzer’s premium range of submersible mixers with outstanding life-cycle economy and superior reliability.

  • Submersible recirculation pump type ABS XRCP
    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.

  • Submersible sewage pump type ABS XFP
    The submersible sewage pumps type ABS XFP are the best choice for ensuring efficient and reliable pumping in any wastewater pumping station. The submersible pumps are equipped with Premium Efficiency IE3 motors as standard and with the Contrablock Plus impellers.
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