Development of a Novel Deammonification Process for Cost Effective Separate Centrate and Main Plant Nitrogen Removal

Development of a Novel Deammonification Process for Cost Effective Separate Centrate and Main Plant Nitrogen Removal

R. Sharp A. Niemiec W. Khunjar S. Galst A. Deur

Department of Civil and Environmental Engineering, Manhattan College, USA.

Hazen and Sawyer, New York, NY USA.

New York City Department of Environmental Protection, NY USA.

Page: 
11-21
|
DOI: 
https://doi.org/10.2495/SDP-V12-N1-11-21
Received: 
N/A
|
Accepted: 
N/A
|
Published: 
1 January 2017
| Citation

OPEN ACCESS

Abstract: 

With an increasing need to reduce nitrogen loads from wastewater discharges, the wastewater industry is developing treatment processes that can effectively remove nitrogen with reduced chemical and energy costs. Technologies for standard deammonification are available for removing nitrogen from ammonia-rich streams produced during sludge dewatering. These processes use partial nitritation coupled with anaerobic ammonia oxidation (Anammox) to simultaneously remove ammonia and nitrite. These technologies use 34% of the air and no supplemental carbon as compared to conventional nitrogen removal processes. However, standard deammonification processes require effective suppression of Nitrite Oxidizing Bacteria (NOB) to be effective, which can require sophisticated operations. The discovery of a Glycerol Acclimated Biomass (GAB) that carries out accelerated denitratation led to the development of a novel deammonification process that produces the required nitrite via partial denitratation. The nitrite and residual ammonia is converted to nitrogen gas via anammox activity. This novel process removes up to 80% of the total nitrogen from centrate without the need for NOB suppression. The process uses 50% less energy and 75% less carbon than conventional BNR processes.

Keywords: 

anammox, deammonification, denitratation, nitrogen removal

  References

[1] Water Environment Federation, Shortcut Nitrogen Removal - Nitrite Shunt and Deammonification, WEF. Alexandria, VA, USA, 2015.

[2] Tchobanoglous, G,F. & Burton, D., Stensel. Metcalf and Eddy. Wastewater Engineering: Treatment and Reuse, 4th edn., McGraw-Hill: New York, pp. 750–788, 2002.

[3] Khunjar, W., Galst, S., Pitt, P., Sharp, R., O’Connor, K. & Deur, A., Demonstration of a novel deammonification process at the 26th ward wastewater treatment plant. In Proceeding of the Water Environment Federation, pp. 2907–2912, Chicago, IL, 2015.

[4] Sharp, R., Brace, A., Dailey, S., Pitt, P., Deur, A., Motyl, M. & Beckmann, K., Implications of glycerol addition on nitrogen removal mechanisms. In Proceeding of the Water Environment Federation, Chicago, IL, 2013. http://dx.doi.org/10.2175/193864713813685539

[5] Sharp R., Dailey, S., Pitt, P. & Deur, A., Beckmann kinetics of glycerol acclimated biomass: implications on plant operations and performance. In Proceeding IWA/WEF Nutrient Removal and Recovery, Vancouver, Canada, 2013.

[6] Noophan, L.P., Sripiboon, S., Damrongsri, M. & Munakatamarr, J., Ammonium oxidation by Nitrosomonas spp. and anammox bacteria in a sequencing batch reactor. Journal Environmental Management, 90(2), pp. 967–972, 2009. http://dx.doi.org/10.1016/j.jenvman.2008.03.003

[7] Niemiec, A., Personal communication, 21 december 2015, graduate research Assistant, Manhattan College, New York, USA.