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las aguas residuales, al llegar a la depuradora, primero pasan por el decantador digestor que realiza la sedimentación primaria y la digestión de fangos, donde las bacterias anaerobias degradan la materia orgánica, descomponiendo los sólidos.
the waste water entering the treatment plant passes first through the septic tank (decanter/digester) which performs the primary sedimentation and digests the sludge, where the anaerobic bacteria degrade the organic matter, breaking down the solids.