LONG TERM EVALUATION OF THE EFFECT OF SALINITY ON ORGANIC REMOVAL AND AMMONIUM OXIDATION IN A DOWN-FLOW HANGING SPONGE REACTOR

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UEMURA S.; KIMURA M.; YAMAGUCHI T.; OHASHI A.; TAKEMURA Y.; HARADA H.

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Paper Information

Journal: INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH (IJER) Year:2012 | Volume:6 | Issue:2 Page(s): 361-366

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Title

LONG TERM EVALUATION OF THE EFFECT OF SALINITY ON ORGANIC REMOVAL AND AMMONIUM OXIDATION IN A DOWN-FLOW HANGING SPONGE REACTOR

Author(s)

Keywords

AMMONIUM OXIDATION

PHENOL

SALINITY

NITRITATION

DHS

Abstract

The effect of SALINITY on organic removal and AMMONIUM OXIDATION in a down-flow hanging sponge reactor was investigated by conducting a long-term continuous experiment over a period of 800 days. The DHS reactor, constructed by connecting three identical units, was fed with artificial wastewater containing 500 mg-N/L of ammonium nitrogen and 1400 mg- COD/L of PHENOL. SALINITY of the influent was controlled by the addition of 8.0 to 25 g-Cl-/L of NaCl. The DHS reactor was operated at a hydraulic retention time of 12 h in a temperature controlled room at 25oC. No significant inhibition of organic removal and AMMONIUM OXIDATION was observed at salinities of up to 20 g-Cl-/L, at which levels AMMONIUM OXIDATION and COD removal both exceeded 90%, respectively. However, at a SALINITY of 25 g-Cl-/L, organic removal and AMMONIUM OXIDATION were both severely inhibited. In addition, the ratio of effluent nitrite nitrogen to influent ammonium nitrogen increased from 3.4% at salinities of 8.0 g-Cl-/L to 33% at salinities of 20 g-Cl-/L.

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APA: Copy

UEMURA, S., KIMURA, M., YAMAGUCHI, T., OHASHI, A., TAKEMURA, Y., & HARADA, H.. (2012). LONG TERM EVALUATION OF THE EFFECT OF SALINITY ON ORGANIC REMOVAL AND AMMONIUM OXIDATION IN A DOWN-FLOW HANGING SPONGE REACTOR. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH (IJER), 6(2), 361-366. SID. https://sid.ir/paper/301143/en

Vancouver: Copy

UEMURA S., KIMURA M., YAMAGUCHI T., OHASHI A., TAKEMURA Y., HARADA H.. LONG TERM EVALUATION OF THE EFFECT OF SALINITY ON ORGANIC REMOVAL AND AMMONIUM OXIDATION IN A DOWN-FLOW HANGING SPONGE REACTOR. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH (IJER)[Internet]. 2012;6(2):361-366. Available from: https://sid.ir/paper/301143/en

IEEE: Copy

S. UEMURA, M. KIMURA, T. YAMAGUCHI, A. OHASHI, Y. TAKEMURA, and H. HARADA, “LONG TERM EVALUATION OF THE EFFECT OF SALINITY ON ORGANIC REMOVAL AND AMMONIUM OXIDATION IN A DOWN-FLOW HANGING SPONGE REACTOR,” INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH (IJER), vol. 6, no. 2, pp. 361–366, 2012, [Online]. Available: https://sid.ir/paper/301143/en

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