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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 12, 2014
Accepted July 22, 2014

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Effective partial nitrification and denitrification via nitrite with inhibitor removal basin for high strength ammonium wastewater treatment

Sang-sik Kim^†

Department of Health & Environment, Kimpo College, Gimpo, Gyeonggy 415-761, Korea

sskim@kimpo.ac.kr

Korean Journal of Chemical Engineering, February 2015, 32(2), 303-307(5), 10.1007/s11814-014-0208-y

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Abstract

A system consisting of an air stripping unit, an inhibitor removal basin, an aerobic basin, and an anoxic basin was investigated for nitrogen removal from coal gasification plant stripped gas liquor containing high-strength organic, nitrogenous compounds. Nitrite oxidation, followed by the reduction of nitrite to nitrogen gas, was adopted for nitrogen removal. The free ammonia concentration in the coal gasification plant stripped gas liquor was obtained by modified empirical method. The optimum reaction temperature, pH, and ammonia.N concentration in the feeding_x000D_ solutions for the ammonia oxidation to nitrite were 30 C, pH 8.0, and less than 200mg/L, respectively. Over 98% of the organic compounds in the wastewater, including phenol, O-cresol, m-cresol, quinoline, and benzene, were removed using the nitrogen removal system by incorporating an inhibitor removal basin. An inhibitor removal basin accelerates ammonia oxidation rate and enhances settleability. This system provides a much faster nitrogen removal rate and less consumption of external carbon sources when compared to conventional nitrogen removal system combined with nitrification and denitrification.

Keywords

Free Ammonia Nitrification Denitrification Nitrogen Removal Inhibitor Removal Basin Coal Gasification Wastewater

References

Baker JE, Thompson RJ, Environmental Protection Technology Series, Biological removal of carbon and nitrogen from coke plant wastes, EPA-R2-73-167 (1973)
Anthonisen AC, Loehr RC, Prakasam TBS, Srinath EG, J. Water. Pollut. Contr Fed., 48(5), 835 (1976)
Aleem MIH, Alexander M, Appl. Microbiol., 8(2), 80 (1960)
Charles G, Joann S, Jeill O, Water Environ. Res., 69(6), 1086 (1997)
Tomlinson TG, Boon AG, Trotman CNA, J. Appl. Bacteriol., 29, 266 (1966)
Nakos GG, Wolcott AR, Plant Soil., 36, 521 (1972)
Chen SK, Juaw CK, Cheng SS, Water Sci. Technol., 23(7), 1417 (1991)
Li H, Cao H, Li Y, Zhang Y, Liu H, Environ. Eng. Sci., 27(4), 313 (2010)
Abeling U, Seyfried CF, Water Sci. Technol., 26, 1007 (1992)
Christian F, Marc B, Philipp H, Irene B, Hansruedi S, J. Biotechnol., 99(3), 295 (2002)
Wu L, Peng C, Zhang S, Peng Y, J. Environ. Sci. (China), 21, 1480 (2009)
Lee JH, Park JJ, Seo KS, Choi GC, Lee TH, Korean J. Chem. Eng., 30(1), 139 (2013)
Kim SS, Kim HJ, Korean J. Chem. Eng., 20(6), 1103 (2003)
APHA, Standard methods for the examination of water and waste water, 20th Ed., American Public Health Association, Washington D. C., USA (1998)
Barbosa MJ, Rocha JMS, Tramper J, Wijffels RH, J. Biotechnol., 85(1), 25 (2001)