CEN/TC 165
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 20826 | EN 12255-3:2000/AC:2000 | Wastewater treatment plants - Part 3: Preliminary treatment | Atcelts |
| 69387 | EN 12255-3:2024 | Wastewater treatment plants - Part 3: Preliminary treatment | Standarts spēkā |
| 7237 | EN 12255-4:2002 | Wastewater treatment plants - Part 4: Primary settlement | Atcelts |
| 66912 | EN 12255-4:2023 | Wastewater treatment plants - Part 4: Primary treatment | Standarts spēkā |
| 7238 | EN 12255-5:1999 | Wastewater treatment plants - Part 5: Lagooning processes | Atcelts |
| 66909 | EN 12255-5:2024 | Wastewater treatment plants - Part 5: Lagooning processes | Standarts spēkā |
| 7239 | EN 12255-6:2002 | Wastewater treatment plants - Part 6: Activated sludge process | Atcelts |
| 66910 | EN 12255-6:2023 | Wastewater treatment plants - Part 6: Activated sludge process | Standarts spēkā |
| 7240 | EN 12255-7:2002 | Wastewater treatment plants - Part 7: Biological fixed-film reactors | Atcelts |
| 76645 | EN 12255-7:2026 | Wastewater treatment plants - Part 7: Biological fixed-film reactors | Standarts spēkā |
Displaying 101-110 of 577 results.