 |
| |||
| percolating filter | |||
| trickling filter | |||
| biofilter | |||
| trickling filter (Tropfkörperreaktor/ Rieselfilmreaktor) | |||
| bacterial bed; biological filter | |||
| contact aerator | |||
| percolation filter; sprinkling filter | |||
| |||
| plastic filled trickling filter | |||
| Tropfkorper: 12 do fraz, 3 tematyki |
| Budownictwo | 2 |
| Ochrona środowiska | 5 |
| Zasoby naturalne i ochrona dzikiej przyrody | 5 |