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Wastewater treatment
[ar] معالجة المياه العادمة
[bcl] Paglinig nin maati na tubig
[bn] বর্জ্যপানি শোধন
[el] Επεξεργασία λυμάτων
[eu] Hondakin-uren tratamendu
[fa] تصفیه پساب
[fr] Traitement des eaux usées
[gl] Depuración de augas residuais
[ha] Maganin shara a ruwa
[hi] अपशिष्ट जल उपचार