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Description: W14-Proceedings
Comparing Systems Performance between HPO-MBR and HPO-MBBR in Shunting Full Nitrification to Nitritation
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Description: W14-Proceedings
Comparing Systems Performance between HPO-MBR and HPO-MBBR in Shunting Full Nitrification to Nitritation

Comparing Systems Performance between HPO-MBR and HPO-MBBR in Shunting Full Nitrification to Nitritation

Comparing Systems Performance between HPO-MBR and HPO-MBBR in Shunting Full Nitrification to Nitritation

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Description: W14-Proceedings
Comparing Systems Performance between HPO-MBR and HPO-MBBR in Shunting Full Nitrification to Nitritation
Abstract
Significant economic and process advantages can be obtained by shunt approaches that enable NH3 to be converted to NO2, and then to N2 gas, without having to go through the full nitrification route. This can lead to about 25% reduction in the oxygen required for ammonia oxidation, and up to 40% savings in the carbon requirement for denitrification. Existing approaches and processes aimed at obtaining robust nitrite shunt in conventional nitrification systems have been challenging. In this paper, we contribute to the growing body of work on nitrogen shunt processes, by investigating the impact of High Purity Oxygen (HPO) processes on ammonia bio-oxidation of centrate streams via the nitritation and nitratation routes. Our work indicates that robust nitritation of centrate feeds can be obtained, and more importantly sustained. Process conditions that enable the seamless transition from full nitrification to partial nitritation are also discussed. Our work indicates that dissolved oxygen levels can play a significant role in determining whether AOB or NOB bacteria are dominant in the process.
Significant economic and process advantages can be obtained by shunt approaches that enable NH3 to be converted to NO2, and then to N2 gas, without having to go through the full nitrification route. This can lead to about 25% reduction in the oxygen required for ammonia oxidation, and up to 40% savings in the carbon requirement for denitrification. Existing...
Author(s)
Malcolm FabiyiMónica de GraciaAsun Larrea
SourceProceedings of the Water Environment Federation
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Oct, 2014
ISSN1938-6478
DOI10.2175/193864714815941072
Volume / Issue2014 / 9
Content sourceWEFTEC
Copyright2014
Word count181

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Description: W14-Proceedings
Comparing Systems Performance between HPO-MBR and HPO-MBBR in Shunting Full Nitrification to Nitritation
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Description: W14-Proceedings
Comparing Systems Performance between HPO-MBR and HPO-MBBR in Shunting Full Nitrification to Nitritation
Abstract
Significant economic and process advantages can be obtained by shunt approaches that enable NH3 to be converted to NO2, and then to N2 gas, without having to go through the full nitrification route. This can lead to about 25% reduction in the oxygen required for ammonia oxidation, and up to 40% savings in the carbon requirement for denitrification. Existing approaches and processes aimed at obtaining robust nitrite shunt in conventional nitrification systems have been challenging. In this paper, we contribute to the growing body of work on nitrogen shunt processes, by investigating the impact of High Purity Oxygen (HPO) processes on ammonia bio-oxidation of centrate streams via the nitritation and nitratation routes. Our work indicates that robust nitritation of centrate feeds can be obtained, and more importantly sustained. Process conditions that enable the seamless transition from full nitrification to partial nitritation are also discussed. Our work indicates that dissolved oxygen levels can play a significant role in determining whether AOB or NOB bacteria are dominant in the process.
Significant economic and process advantages can be obtained by shunt approaches that enable NH3 to be converted to NO2, and then to N2 gas, without having to go through the full nitrification route. This can lead to about 25% reduction in the oxygen required for ammonia oxidation, and up to 40% savings in the carbon requirement for denitrification. Existing...
Author(s)
Malcolm FabiyiMónica de GraciaAsun Larrea
SourceProceedings of the Water Environment Federation
Document typeConference Paper
PublisherWater Environment Federation
Print publication date Oct, 2014
ISSN1938-6478
DOI10.2175/193864714815941072
Volume / Issue2014 / 9
Content sourceWEFTEC
Copyright2014
Word count181

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Malcolm Fabiyi# Mónica de Gracia# Asun Larrea. Comparing Systems Performance between HPO-MBR and HPO-MBBR in Shunting Full Nitrification to Nitritation. Alexandria, VA 22314-1994, USA: Water Environment Federation, 2018. Web. 6 Oct. 2025. <https://www.accesswater.org?id=-282896CITANCHOR>.
Malcolm Fabiyi# Mónica de Gracia# Asun Larrea. Comparing Systems Performance between HPO-MBR and HPO-MBBR in Shunting Full Nitrification to Nitritation. Alexandria, VA 22314-1994, USA: Water Environment Federation, 2018. Accessed October 6, 2025. https://www.accesswater.org/?id=-282896CITANCHOR.
Malcolm Fabiyi# Mónica de Gracia# Asun Larrea
Comparing Systems Performance between HPO-MBR and HPO-MBBR in Shunting Full Nitrification to Nitritation
Access Water
Water Environment Federation
December 22, 2018
October 6, 2025
https://www.accesswater.org/?id=-282896CITANCHOR