WATER AND WASTEWATER MANAGEMENT
DURABILITY COMPARED
A
quarter of a century has passed since the PCK Refinery in Schwedt/Oder, Germany (PCK Raffinerie
GmbH) renovated its sewer systems, the so-called main sluice. In 1997, two approaches were pursued and compared. The conventional approach
consisted of renewing the underground pipe systems. The second solution was to install a pumping station at each plant. The slop products from the production plant and the rainwater and surface water produced are pumped into the
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central wastewater treatment plant via an existing pipe network on the pipe bridges. The contract was awarded to the second solution. The PCK Refinery entered into
discussions with various pump manufacturers. The composition of industrial wastewater can vary greatly, and corrosive substances can also enter the pits. For this reason, the minimum requirement for the material of the wetted parts was defined as Duplex 1.4462. The design temperature of 80°C ruled out the use of submersible motor pumps. Ultimately, PCK chose sump pumps
Egger Turo Vortex sump pumps for slop tanks at the PCK refinery
An overview of the benefits of installing a sewer pumping system compared with the complete renewal of underground pipes
with a dry-installed IEC standard motor. The switch-on level for the pumps had to be selected in such a way as to prevent backflow into the inlet channels. This resulted in installation lengths of 2.5 to 5 metres.
EMILE EGGER WON THE TECHNICAL CONTRACT The Swiss pump manufacturer Emile Egger was one of these potential suppliers. As a pump manufacturer specialising in liquids containing solids, Egger was able to win the technical contract. The patented Turo Vortex hydraulics has an impeller that is
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