Raw sewage and high discharge heads – a mastered challenge

Thomas Bleif
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Lifting station Kalchreuth

In Kalchreuth wastewater treatment plant (Bavaria), extensive renovation and expansion work had planned to enable wastewater treatment in accordance with current and future requirements of water legislation. With the intent to avoid high investment and operating costs associated with the modernisation of the wastewater treatment plant, it was decided to opt for a less expensive variant in the form of a wastewater transfer to Nuremberg. The Nuremberg sewer network and the Nuremberg sewage treatment plants operated by the “Stadtentwässerung Nuremberg SUN” can absorb the additional volumes of wastewater from Kalchreuth.

For the selection of the pumps, SUN finally opted for the pump manufacturer Emile Egger, who was able to provide numerous concrete references for this exceptional application with high discharge heads. Four identical pumps type TA 81-100 H4 LB4B were therefore used. The patented Turo® TA vortex pumps are equipped with a vortex impeller optimised for raw sewage to ensure maximum operational reliability in case of blockages.Two pumps in series achieved the required height of 92 m. These pumps can be optimally adjusted for such topography.

Since the commissioning, all four pumps have been working very reliably without any disruptions or clogging.

Two patented Turo® TA vortex in series
Two patented Turo® TA vortex in series

Patented Turo® TA vortex pumps are equipped with a vortex impeller optimised for raw sewage to ensure maximum operational reliability in case of blockages.

Patented Turo® TA Vortex Pumps in series

at Kalchreuth sewage lifting station (Bavaria)

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