Project: Rigas Udens Biological treatment plant
Location: Riga, LATVIA
Date: 1996
Description: Municipal enterprise "Rigas Udens" supplies the City with drinking water from abstraction sites located outside the terittory of Riga City: surface water intakes - the Daugava and ground water intakes from Baltezers area, Zakumuiza and others.

All aerotanks and channels were treated with the Penetron system in 1996 - 97. Products used include Penetron, Penecrete and Peneplug. The Penetron system was decided upon because of its ability to protect the concrete against chemical attack on top of the guaranteed waterproofing performance.