Plantas depuradoras de aguas residuales. Parte 7: Reactores de medio biológico fijo.
Wastewater treatment plants - Part 7: Biological fixed-film reactors.
Stations d'épuration - Partie 7: Réacteurs biologiques à cultures fixées.
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13.060.30 / Sewage water
93.030 / External sewage systems
CTN 149 - Water engineering
EN 12255-7:2002 (Identical)
It will be cancelled by: PNE-prEN 12255-7
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