BIOLOGICAL FILTRATION (BIOLOGICAL WASTEWATER TREATMENT)
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BTACTIVATED SLUDGE PROCESS (BIOLOGICAL WASTEWATER TREATMENT)
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UDC628.356.63
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Descriptor GERBIOLOGISCHE FILTRATION (BIOLOGISCHE ABWASSERBEHANDLUNG)
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Descriptor ENGBIOLOGICAL FILTRATION (BIOLOGICAL WASTEWATER TREATMENT)
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Descriptor FREFILTRAGE BIOLOGIQUE (TRAITEMENT BIOLOGIQUE DES EAUX USÉES)
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Variant GERFILTRATION/BIOLOGISCHE FILTRATION, BELEBTSCHLAMMVERFAHREN (BIOLOGISCHE ABWASSERBEHANDLUNG)
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Variant GERBIOLOGISCHE FILTRATION/BELEBTSCHLAMMVERFAHREN (BIOLOGISCHE ABWASSERBEHANDLUNG)
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Variant ENGFILTRATION/BIOLOGICAL FILTRATION, ACTIVATED SLUDGE PROCESS (BIOLOGICAL WASTEWATER TREATMENT)
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Variant ENGBIOLOGICAL FILTRATION/ACTIVATED SLUDGE PROCESS (BIOLOGICAL WASTEWATER TREATMENT)
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Variant FREFILTRAGE BIOLOGIQUE/PROCÉDÉ D'ÉPURATION PAR BOUE ACTIVÉE (TRAITEMENT BIOLOGIQUE DES EAUX USÉES)