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Towards mainstream anammox

lessons learned from pilot-scale research at WWTP Dokhaven

Journal Article (2018)
Author(s)

M Hoekstra (TU Delft - BT/Environmental Biotechnology)

Stefan P. Geilvoet (Waterschap Hollandse Delta)

Tim L.G. Hendrickx (Paques B.V.)

Charlotte S. van Erp Taalman Kip (Waterschap Hollandse Delta)

Robbert Kleerebezem (TU Delft - BT/Environmental Biotechnology)

Mark M.C. van Loosdrecht (TU Delft - BT/Environmental Biotechnology)

Research Group
BT/Environmental Biotechnology
Copyright
© 2018 M. Hoekstra, Stefan P. Geilvoet, Tim L.G. Hendrickx, Charlotte S. van Erp Taalman Kip, R. Kleerebezem, Mark C.M. van Loosdrecht
DOI related publication
https://doi.org/10.1080/09593330.2018.1470204
More Info
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Publication Year
2018
Language
English
Copyright
© 2018 M. Hoekstra, Stefan P. Geilvoet, Tim L.G. Hendrickx, Charlotte S. van Erp Taalman Kip, R. Kleerebezem, Mark C.M. van Loosdrecht
Research Group
BT/Environmental Biotechnology
Pages (from-to)
1-13
Reuse Rights

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Abstract

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.