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Sarà in funzione da domani, venerdì, a Dübendorf, il primo dispositivo in Svizzera destinato alla lotta contro i microinquinanti nelle acque.
Rientrano nella categoria dei microinquinanti minuscoli residui di sostanze come medicinali, detergenti, prodotti per la cura del corpo e pesticidi. Essi si riversano nelle acque freatiche, nei fiumi e nei laghi, e in concentrazioni tali da risultare tossiche per i pesci e le altre forme di fauna acquatica.
Le tecnologie degli impianti attualmente in esercizio non riescono a eliminare queste particelle o lo fanno ma in misura insufficiente, ha sottolineato Daniel Rensch, responsabile dell'Ufficio cantonale zurighese per l'acqua, l'aria e l'energia.
La soluzione è quindi rappresentata da questo nuovo strumento, la cui installazione, nel corso dei prossimi 20 anni, dovrà essere estesa a circa un centinaio dei 700 impianti di depurazione idrica nel paese.
ATS/ARi
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