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Un gabinetto ideato dall'Istituto per la ricerca sulle acque dei Politecnici federali ha ricevuto il Premio della International Water Associaton.
Le sue caratteristiche sono l’utilizzazione di poca acqua e l’assenza di canalizzazioni. La toilette a secco è stata sperimentata con successo in Uganda. Un sistema di elettrolisi alimentato con energia solare permette di produrre del cloro e impedisce la formazione di batteri indesiderati.
I normali WC non possono essere usati in mancanza di acqua corrente e di sistemi di canalizzazione. I realizzatori cercano ora un partner industriale
Red.MM/ats/mas
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