Recycling: Wie aus Scherben Flaschen werden | Wie geht das? | NDR Doku

NDR Doku May 24, 2017
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Dokumentationen und Reportagen des Norddeutschen Rundfunks (NDR). Mehr Videos finden Sie auf https://www.ardmediathek.de/ndr/ Hier gilt die Netiquette des NDR: http://www.ndr.de/nachrichten/netzwelt/Hinweise-und-Netiquette,netiquette107.html

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#ndr #ndrdoku #recycling Glasrecycling ist ein umweltfreundlicher Prozess, aber nur dann sinnvoll, wenn er exakten Abläufen folgt. Kommt beispielsweise nur ein kleiner Henkel einer Espressotasse aus Porzellan dazu, kann die ganze Glasproduktion lahmgelegt werden. Auch Buntglas, das fälschlicherweise in den Container für Weißglas eingeworfen wurde, kann die Weißglasproduktion stoppen. Das gesamte Glas muss dann wieder eingeschmolzen werden. In der Glashütte in Nienburg werden 2.000 Flaschen produziert: pro Minute! Eine Flasche besteht heutzutage aus bis zu 90 Prozent Altglas, das in sogenannten Glasiglus am Straßenrand gesammelt wird. Befinden sich in einer Tonne Glas auch nur 20 Gramm Fremdstoffe, muss die ganze Charge noch einmal gereinigt werden. Eine Maschine saugt millimetergroße Fremdkörper aus den Glashaufen. Das geschieht in Nanosekunden, für das menschliche Auge nicht sichtbar. Nur eine Spezialkamera verrät die Abläufe. Scherben, Sand und ein geheimer Mix aus anderen Stoffen werden in der Glashütte schließlich in großen Wannen bei 1600 Grad verschmolzen. Die Arbeitenden am Glasofen schwitzen bei fast 50 Grad Raumtemperatur. Deshalb müssen sie täglich mindestens zwei Liter Wasser trinken, darauf besteht der Arbeitgeber. Die Reportage aus der Reihe "Wie geht das?" erklärt, wie aus Sand und Scherben neue Flaschen werden und gibt Einblick in den erfolgreichsten Kreislauf seit es Recycling gibt.

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