How the construction of Blominmäki wastewater treatment plant proceeds

The Mikkelä access tunnel excavation was begun in December 2014 and completed in September 2015.

The excavation work on the Blominmäki wastewater treatment plant cave system and the terrestrial facilities began in September 2015 and are expected to end in January 2018.

The construction of the treatment plant after the excavation work has been completed is estimated to begin at the turn of 2017-2018.

The sewer tunnels between Mikkelä and Länsiväylä are mainly excavated after the wastewater treatment plant excavations.  The Finnoo sections of the sewer tunnels were excavated in connection with the Länsimetro contracts in 2015-2017.

The test run of the treatment plant and the ramp-up process of the wastewater purification process and the sludge treatment process take about one year. The aim is that wastewater treatment and sludge treatment will be transferred from Suomenoja to Blominmäki in 2021.

Blominmäki wastewater treatment plant 3D ​animation​

- produced in 2016