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May 17, 2023 •307 likes •363 views

Full-scale comparison of N 2 O emissions from N/DN SBR operation versus one-stage deammonification MBBR treating reject water and optimization with pH set-point Linda Kanders, Mlardalen University and Purac AB PhD Student

  1. Full-scale comparison of N 2 O emissions from N/DN SBR operation versus one-stage deammonification MBBR treating reject water – and optimization with pH set-point Linda Kanders, Mälardalen University and Purac AB PhD Student Rejektvattenseminarium 4 - 5 December 2018 Sundets avloppsreningsverk, Växjö

  2. Reject water treatment, Norrköping, Sweden WWTP WWTP Reject water Reject water 135 000 pe 135 000 pe Nitrogen Load Nitrogen Load 1650 kg/d 1650 kg/d 250 kg/d 250 kg/d 1000 m 3 reactor volume 1000 m 3 reactor volume Year 2000- N/DN 2017 SBR Year 2017- Deammonification MBBR N/DN Deammonification 2

  3. N/DN SBR versus DeAm in MBBR 0 1 2 3 4 5 6 7 8h N/DN Sedimentation Mixng ‐ Denitrifcation Aeration ‐ Nitrification Inflow SBR Decantation Ethanoldosage Deam. A M A M A M A M A M A M A M A M MBBR Continous in and outflow Length of aeration regulated by PI-regulator with pH as input 3

  4. N 2 O Measurements Methods E N2O N 2 O(g) N 2 O(aq) Nitrogen Load (TN) Intermittant aeration 4

  5. F TN 10% F TN F TN Thank You! 0.5-0.7% F TN 0.14% DeAm pH=7.6 N/DN DeAm linda.kanders@purac.se jing-jing.yang@ivl.se christian.baresel@ivl.se jesus.zambrano@mdh.se Questions? 15

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