Registration number (WIID)Project No.TitleStatus
69386LVS EN 12255-13:2023Wastewater treatment plants - Part 13: Chemical treatment - Treatment of wastewater by precipitation/flocculationStandarts spēkā
7253LVS EN 12255-14:2004Wastewater treatment plants - Part 14: DisinfectionAtcelts
69390LVS EN 12255-14:2023Wastewater treatment plants - Part 14: DisinfectionStandarts spēkā
7281LVS EN 12255-15:2004Wastewater treatment plants - Part 15: Measurement of the oxygen transfer in clean water in aeration tanks of activated sludge plantsStandarts spēkā
7280LVS EN 12255-16:2006Wastewater treatment plants - Part 16: Physical (mechanical) filtrationAtcelts
66080LVS EN 12255-16:2021Wastewater treatment plants - Part 16: Physical (mechanical) filtrationStandarts spēkā
72612LVS EN 12255-2:2026Wastewater treatment plants - Part 2: Storm water management systems 
20826LVS EN 12255-3:2001 +ACWastewater treatment plants - Part 3: Preliminary treatmentAtcelts
7236LVS EN 12255-3:2016Wastewater treatment plants - Part 3: Preliminary treatmentStandarts spēkā
69387LVS EN 12255-3:2024Wastewater treatment plants - Part 3: Preliminary treatmentStandarts spēkā
Displaying 331-340 of 578 results.