| Subject | English | German |
| nat.res. | biological sewage treatment | biologische Abwasserreinigung |
| nat.res. | biological sewage treatment | biologische Abwasserbehandlung |
| gen. | biological sewage treatment plants | biologische Kläranlagen |
| gen. | central sewage treatment | zentrale Abwasserbeseitigung |
| nat.res. | chemical process of sewage treatment | chemisches Verfahren der Abwasserbehandlung |
| nat.res. | chemical sewage treatment | chemische Abwasserreinigung |
| gen. | combined sewage and water treatment plants | Mischkanalisationsbehandlungsanlagen |
| environ. | Concerted Action Committee-Treatment and Use of Sewage Sludge | Ausschuss für die konzertierte Aktion-Behandlung und Verwendung von Klaerschlamm |
| environ. | Concerted Action Committee-Treatment and Use of Sewage Sludge | COMAC-Klaerschlamm |
| environ. | fully biological sewage treatment plant | vollbiologische Kläranlage |
| construct. | local sewage treatment | örtliche Abwasserreinigung |
| water.suppl. | mechanical sewage treatment | Teilklärung |
| construct. | mechanical sewage treatment | mechanische Abwasserreinigung |
| nat.res. | method of sewage treatment | Abwasserbehandlungstechnik |
| nat.res. | method of sewage treatment | Abwasserbehandlungsverfahren |
| nat.res. | method of sewage treatment | Abwasserbehandlungsprozeß |
| construct. | physical-and-chemical sewage treatment | physikalisch-chemische Abwasserbehandlung |
| construct. | secondary sewage treatment | Abwassernachbehandlung |
| construct. | sewage biochemical treatment | biochemische Abwasserbehandlung |
| construct. | sewage biological treatment | biologische Abwasserbehandlung |
| construct. | sewage farm treatment | Abwasserverrieselung |
| construct. | sewage treatment | Klärung |
| transp., environ. | sewage treatment | Reinigung von Abwasser |
| construct. | sewage treatment | Abwasserklärung |
| mining. | sewage treatment | Abwasserbehandlung |
| gen. | sewage treatment | Abwasseraufbereitung |
| water.suppl. | sewage treatment | Abwasserreinigung Abwasserklärung |
| environ., industr. | sewage treatment | Abwasser-Aufbereitung |
| agric. | sewage treatment | Abwasserverwertung |
| transp., environ. | sewage treatment | Abwasserreinigung |
| construct. | sewage treatment | Abwasserbeseitigung |
| chem. | sewage treatment plant | Kläranlage (kommunal) |
| nat.res. | sewage treatment plant | Belebtschlammanlage |
| nat.res. | sewage treatment plant | Schlammbelebungsanlage |
| gen. | sewage treatment plant | Kläranlage |
| gen. | Sewage Treatment Plant STP | Abwasserreinigungsanlage ARA |
| environ., min.prod. | sewage treatment plant | Abwasserreinigungsanlage |
| environ., min.prod. | sewage treatment plant | Abwasseraufbereitungsanlage |
| nat.res. | sewage treatment plant | Belebtschlammbecken |
| nat.res. | sewage treatment plant | Abwasseranlage |
| nat.res. | sewage treatment plant | Abwasserbeseitigungsanlage |
| nat.res. | sewage treatment plant | Abwasserkläranlage |
| chem. | sewage treatment plant | Abwasserbehandlungsanlage |
| gen. | sewage treatment plant | Klärwerk |
| nat.res. | sewage treatment process | Reinigungsstufe |
| nat.res. | sewage treatment process | Abwasserbehandlungsstufe |
| nat.res. | sewage treatment stage | Reinigungsstufe |
| nat.res. | sewage treatment stage | Abwasserbehandlungsstufe |
| environ. | sewage treatment system Sewage treatment comes in two stages - primary and secondary treatment. The primary stage involves a process of screening solids from sewage, leaving a sludge and relatively clear water for further treatment or for disposal into rivers, the sea or on to the land. In the secondary stage the sludge is stirred constantly in vast tanks to get more oxygen into the mixture, allowing bacteria to break down the organic matter and leave a harmless residue that falls as a sediment to the bottom of the tank. After processing, the clear water on top of the tank is discharged into rivers and the sediment is used as landfill or discharged at sea | Abwasserbehandlungssystem |
| environ. | sewage treatment system | Abwasserbehandlungssystem |
| gen. | sewage treatment technology | Abwasserbehandlungstechnik, Klärtechnik |
| construct. | sewage treatment works | Klärwerk |
| construct. | sewage treatment works | Kläranlage |
| water.suppl. | sewage-treatment plant | Abwasserreinigungsanlage |
| construct. | sewage-treatment plant | Kläranlage |
| environ., agric., tech. | sludge from sewage treatment plants | Klärschlamm |
| construct. | small sewage treatment plant | Kleinkläranlage |
| sewage | tertiary sewage treatment | dritte Reinigungsstufe (chemisch) |
| gen. | treatment of sewage | Reinigungsstufe |
| construct. | two-stage sewage treatment | zweistufige Abwasserreinigung |
