Clean water
for clean electricity

The customer’s task

The Isar power plant in Bad Tölz, which went into operation at the end of the 1950s, has been producing around ten million kilowatt hours of electricity every year for more than six decades, supplying 3,500 households and thus covering a quarter of the entire energy requirements of the town of Bad Tölz.

For the first time in a long time, extensive maintenance work was due to be carried out in 2022/2023, during the course of which the treatment of the seepage water from the turbines was to be redesigned and implemented before it could be fed back into the Isar. At the same time, a non-visible installation site was to be found for the corresponding systems and piping.

The solution from LK Metall

For the efficient and reliable treatment of seepage water from two Kaplan turbines, LK Metall installed a customized separator system in the nacelle at the level of the water turbines. The compact solution combines a welded sludge trap (2,500 liters) with an oil separator that achieves a maximum throughput capacity of 15 l/s.

The water contaminated by the necessary lubrication of the shafts is separated directly at the turbine using the separator system. In this way, the leakage of grease, oil and light liquids containing hydrocarbons can be effectively prevented with the LK separator and the cleaned leachate can be discharged into the Isar.