Nitrogen System To Clear Seine, But More Will Be Required
The risk of algal pollution of water in and beyond the River Seine will be substantially reduced starting next year when a new nitrate-removal system starts up in a Paris wastewater plant, one of Europe’s largest.
Costing nearly $500 million, the project still will eliminate only 30% of total nitrogen from the vast Seine Aval plant. Even in reduced form, the system is one of the world’s largest of its type, according to OTV France, part of Veolia Water Solutions and Technologies (VWST), Paris. OTV leads a turnkey joint venture, nearing the end of a 30-month construction phase, requiring up to 1,200 workers, says VWST’s CEO, Jean-Michel Herrewyn.