E2.01 Yao 2018 ReNUWIt Annual Meeting Poster

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Abstract/Contents

Abstract: Nitritation of ammonia conserves energy by reducing aeration requirements for nitrogen removal. To date, however, stable long-term nitritation has proved difficult to achieve. In this work, we test a new method for stabilization of nitritation of high strength sidestreams from anaerobic digestion - the Alternating Stressors Sequencing Batch Reactor (ASSBR),. In this process, pH fluctuates between 6.5 and 9.5, alternately exposing nitrite oxidizing bacteria (NOB) to two inhibitors - free ammonia (FA) and free nitrous acid (FNA). This control method resulted in stable nitrite accumulation ratio(NAR) of 98 ± 1 % and ammonium removal efficiency of 97 ± 2 % with an influent ammonium nitrogen (NH4+-N) concentration of 1020 ± 25 mgN/L. Community analysis established that this selection regime led to increased NOB and decreased AOB. The dominant AOB specie was Nitrosomonas stercoris (15%), a species that can tolerate high NH4+-N. Unexpectedly, the ASSBR also selected for 15% Xanthomonadacea, a family that is reportedly capable of heterotrophic nitrification. Besides stable nitritation, ASSBR exhibited distinct advantages in operational simplicity and flexibility over a conventional SBR.

Type of resource	other
Date created	May 2018

Subject	Re-inventing the Nation’s Urban Water Infrastructure
Subject	ReNUWIt
Subject	E2.01
Subject	Efficient Engineered Systems
Subject	Energy and resource recovery
Subject	California
Subject	ammonium
Subject	anaerobic digestion
Subject	anammox
Subject	autotrophic nitrogen removal
Subject	bacteria
Subject	biosolids
Subject	catalyst
Subject	consumption
Subject	degradation
Subject	denitrification
Subject	energy
Subject	inhibition
Subject	innovation
Subject	membrane bioreactors
Subject	microbial fuel cell
Subject	phosphorus removal
Subject	removal
Subject	sewage sludge
Subject	sewage treatment
Subject	simultaneous nitrification
Subject	supercritical water
Subject	wastewater

Related Publication	Myung, J., Wang, Z. Y., Yuan, T., Zhang, P., Van Nostrand, J. D., Zhou, J. Z., & Criddle, C. S. (2015). Production of Nitrous Oxide from Nitrite in Stable Type II Methanotrophic Enrichments. Environmental Science & Technology, 49(18), 10969-10975. http://doi.org/10.1021/acs.est.5b03385
Related Publication	Scherson, Y. D., & Criddle, C. S. (2014). Recovery of Freshwater from Wastewater: Upgrading Process Configurations To Maximize Energy Recovery and Minimize Residuals. Environmental Science & Technology, 48(15), 8420-8432. http://doi.org/10.1021/es501701s
Related Publication	Scherson, Y. D., Wells, G. F., Woo, S. G., Lee, J., Park, J., Cantwell, B. J., & Criddle, C. S. (2013). Nitrogen removal with energy recovery through N2O decomposition. Energy & Environmental Science, 6(1), 241-248. http://doi.org/10.1039/c2ee22487a
Related Publication	Scherson, Y. D., Woo, S. G., & Criddle, C. S. (2014). Production of Nitrous Oxide From Anaerobic Digester Centrate and Its Use as a Co-oxidant of Biogas to Enhance Energy Recovery. Environmental Science & Technology, 48(10), 5612-5619. http://doi.org/10.1021/es501009j
Location	https://purl.stanford.edu/zc605bw7313

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License: This work is licensed under an Open Data Commons Attribution License v1.0.

Preferred Citation: Yao, Yinuo and Wang, Zhiyue and Woo, Sung-Geun and Criddle, Craig. (2018). E2.01 Yao 2018 ReNUWIt Annual Meeting Poster. Stanford Digital Repository. Available at: https://purl.stanford.edu/zc605bw7313

Re-inventing the Nation's Urban Water Infrastructure (ReNUWIt)

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