Sewage water heating pool water 


Sewage water heating pool water 

The Raalte swimming pool has been heated with sewage heat since 2013. From the nearby sewage treatment plant, ‘clean’ sewage water with a temperature of 10-15 degrees Celsius is pumped towards the pool. Heat exchangers are installed in the pipes. The pool water is then brought up to temperature with a heat pump.
To achieve the desired temperatures, 40,000 liters of water per hour are pumped through the 600-meter pipeline from the sewage treatment plant to the swimming pool. there, 6 to 7 degrees is extracted from the water and via 4 heat pumps upgraded to max. 43 degrees Celsius.
The annual savings for this pool is about € 25,000. Visitors are informed of the system and the  realized savings via screens.

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