N2O InSites – a collaborative approach to measurement (and mitigation) of N2O: PAPER & PRESENTATION
Amanda Lake, Jacobs, UK
Alec Kimble, BI-ZEN, UK
(Free)
Why N2O InSites?
- We know N2O is highly dynamic, varies across and within lanes, seasons
- Long term measurement is best to capture seasons − Continuous and/or − Targeted campaigns and spatial variation − we want to optimise
- But any data is better than no data and we need to prioritise − we lack high quality data and meta-data − we lack reliable surrounding process data – DO, nitrogen species, carbon
- Collaborative opportunity to install instrumentation, get reliable first hand data and to collaborate
Pilot trial – Countess Wear, South West Water
- PE 165,150: 15BOD:20TSS:10NH4
- Carbonaceous ASP – suspected partial nitrification
- Fixed film nitrifying BAFF
- Anecdotal evidence of poor flow split across 4 lanes
- 3 phases of work monitoring N2O
− Phase 1 – Lane 1
− Phase 2 – Lanes 3, 4
− Phase 3 – BAFF − Phase 4 – Lanes 2,3