TY - JOUR
T1 - Towards mainstream anammox
T2 - lessons learned from pilot-scale research at WWTP Dokhaven
AU - Hoekstra, Maaike
AU - Geilvoet, Stefan P.
AU - Hendrickx, Tim L.G.
AU - van Erp Taalman Kip, Charlotte S.
AU - Kleerebezem, Robbert
AU - van Loosdrecht, Mark C.M.
PY - 2018
Y1 - 2018
N2 - The aim of this research was to study the biological feasibility of the Partial Nitritation/Anammox (PN/A) technology to remove nitrogen from municipal mainstream wastewaters. During stable process operations at summer temperatures (23.2 ± 1.3°C), the total nitrogen removal rate was 0.223 ± 0.029 kg N (m3 d)−1 while at winter temperatures (13.4 ± 1.1°C) the total nitrogen removal rate was 0.097 ± 0.016 kg N (m3 d)−1. Nitrite-oxidizing bacteria (NOB) suppression was successfully achieved at the complete temperature range of municipal mainstream wastewater. Despite the presence of NOB as observed in activity tests, their activity could be successfully suppressed due to a relative low dissolved oxygen concentration. An overcapacity of ammonia-oxidizing bacteria and anammox activity was always present. Long-term stability is a focus point for future research, especially in relation to the stability of the biological oxygen demand removing step, preceding the PN/A reactor.
AB - The aim of this research was to study the biological feasibility of the Partial Nitritation/Anammox (PN/A) technology to remove nitrogen from municipal mainstream wastewaters. During stable process operations at summer temperatures (23.2 ± 1.3°C), the total nitrogen removal rate was 0.223 ± 0.029 kg N (m3 d)−1 while at winter temperatures (13.4 ± 1.1°C) the total nitrogen removal rate was 0.097 ± 0.016 kg N (m3 d)−1. Nitrite-oxidizing bacteria (NOB) suppression was successfully achieved at the complete temperature range of municipal mainstream wastewater. Despite the presence of NOB as observed in activity tests, their activity could be successfully suppressed due to a relative low dissolved oxygen concentration. An overcapacity of ammonia-oxidizing bacteria and anammox activity was always present. Long-term stability is a focus point for future research, especially in relation to the stability of the biological oxygen demand removing step, preceding the PN/A reactor.
KW - autotrophic nitrogen removal
KW - low temperature
KW - Mainstream anammox
KW - wastewater treatment
UR - http://www.scopus.com/inward/record.url?scp=85046812491&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:f7f796e1-9503-48d9-8c16-a68164bb610f
U2 - 10.1080/09593330.2018.1470204
DO - 10.1080/09593330.2018.1470204
M3 - Article
SN - 0959-3330
SP - 1
EP - 13
JO - Environmental Technology (United Kingdom)
JF - Environmental Technology (United Kingdom)
ER -