An unedifying image of the long-standing problems of the Varedo purification plant
The bad news the citizens of the area have known for some time and is that the age-old environmental problem of Varedo purifier causes not a few troubles in the west of Milan and in a part of the province of Monza and Brianza. The good news, on the other hand, is these days and it is that the intricate question could be resolved within a year or so.
The society Ianomi Spa in fact presented at Area Authority of the provinces of Milan and Monza and Brianza, to Lombardy region and to the Municipalities of Varedo is Paderno Dugnano the executive project for the decommissioning of the treatment plant in question, today at the service of the Municipalities of Varedo, Bovisio Masciago, Cesano Maderno, Barlassina, Seveso, Meda and Lentate sul Seveso.
The decommissioning work, if the project, for the purposes of the contract, is approved within a few months, may have started in the first part of 2013 and will be operational already in the first half of 2014. The project consists in the construction of a collector of about eight kilometers from the Varedo plant to the supply network of the Pero purifier. In the meantime, to promote the functionality of the plant, Ianomi is already working to bring a third of the water treated in Varedo to the Bresso treatment plant: a timed intervention, waiting for the collection towards Pero to be completed.
Initially, the municipalities affected by the presence of the Varedo plant wanted to decommission the purifier, whose construction began in 1965, today inadequate in light of the most recent regulations on discharge limits. The hypothesis of building a new plant in the sector has disappeared ex Snia due to lack of certainty on the time needed to convert the area and the too high costs (65 million euros), the possibility of transferring the wastewater to the Pero treatment plant was studied, which maintains a significant residual capacity for treatment. In this way, the definitive solution to the problems presented by a system that is now technologically dated and for which extraordinary maintenance works and interventions are in progress to maintain its functionality will be found.
The disposal project, which it will cost a total of 9 million euros, is the result of constant collaboration between Ianomi and the common partners. In December 2010, Ianomi produced a feasibility study for the transfer of wastewater to the Pero treatment plant; in March 2012, after examining the proposal and comparing it with the ATOs of the provinces of Milan and Monza Brianza, Ianomi was assigned the design and construction of the collection system.