Understanding the N2O emission pattern of plug-flow activated sludge system with the assistance of intensive real-time process monitoring: PRESENTATION ONLY

Ziye Dai, Innovation Technical Expert, Severn Trent Water, UK


o Spernal R2IC
 80,000 PE
 ASPs receive domestic sewage and centrate
o In-line process monitoring
 COD of settled wastewater
 Dissolved N2O at the distribution chamber, anoxic zone, pass 1 and pass 2 in the aeration zone
 NH4 -N at the distribution chamber, Pass 1, the end of Lane 1
 NO3 -N at the end of Lane 1
o Parameters obtained
 COD, NH4 -N and NO3 -N (in RAS) Load
 Dissolved N2O
 N2O emissions from aerobic zones
 NH4 -N removals

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