Background information
Oslo Municipality is rebuilding its sewerage network. A large proportion of the plants are now being overhauled with a focus on energy efficiency, working environment and automation. The capital's wastewater network consists of about 150 plants located around the city.
To manage the climate and indoor environment inside the pumping stations, heating combined with ventilation has been used. This is despite the fact that the pumping stations are service buildings with only patrolling staff as the only visitors. Therefore, there is great potential to reduce the temperature in order to save energy. However, in order to reduce the temperature without risking increased moisture levels, additional investments in dehumidification are needed.
What problems did the Airwatergreen dehumidifier solve?
In the spring of 2017, an evaluation of Airwatergreen's FLEX dehumidifier was carried out to see how it coped with the harsh environment that prevails in these facilities. The evaluation concluded that the indoor environment was significantly improved with lower humidity, which protects equipment and components. In addition, the working environment was both better and safer.
In September, the second Airwatergreen dehumidifier of the FLEX model was ordered. This time it is an uninsulated pump station built in concrete.
Here you have previously had to rely on heating with direct-acting electricity (4650W installed power) and ventilation but still had problems with moisture. The pumping station is 40m2 and contains 3 pumps, each pumping 160L of wastewater per second.