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Uemura, S., Kimura, M., Yamaguchi, T., Ohashi, A., Takemura, Y., Harada, H.. (1391). Long term Evaluation of the Effect of Salinity on Organic Removal and Ammonium Oxidation in a down-flow Hanging Sponge Reactor. , 6(2), 361-366. doi: 10.22059/ijer.2012.503
S. Uemura; M. Kimura; T. Yamaguchi; A. Ohashi; Y. Takemura; H. Harada. "Long term Evaluation of the Effect of Salinity on Organic Removal and Ammonium Oxidation in a down-flow Hanging Sponge Reactor". , 6, 2, 1391, 361-366. doi: 10.22059/ijer.2012.503
Uemura, S., Kimura, M., Yamaguchi, T., Ohashi, A., Takemura, Y., Harada, H.. (1391). 'Long term Evaluation of the Effect of Salinity on Organic Removal and Ammonium Oxidation in a down-flow Hanging Sponge Reactor', , 6(2), pp. 361-366. doi: 10.22059/ijer.2012.503
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. , 1391; 6(2): 361-366. doi: 10.22059/ijer.2012.503

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
مقاله 1، دوره 6، شماره 2، تیر 2012، صفحه 361-366    اصل مقاله (529.25 K)
شناسه دیجیتال (DOI): 10.22059/ijer.2012.503
نویسندگان
S. Uemura* 1؛ M. Kimura2؛ T. Yamaguchi2؛ A. Ohashi3؛ Y. Takemura4؛ H. Harada4
1Department of Environmental Engineering, Kisarazu National College of Technology, 2-11-1 Kiyomidaihigashi, Kisarazu, Chiba 292-0041, Japan
2Department of Environmental Systems Engineering, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka 940-2188, Niigata, Japan
3Department of Social and Environmental Engineering, Hiroshima University, Kagamiyama 1-4-1, Higashi-Hiroshima, Hiroshima 739-8527, Japan
4Department of Civil Engineering, Tohoku University, Aoba 6-6-06, Aramaki, Aoba, Sendai, Miyagi 980-8579, Japan
چکیده
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.
کلیدواژه‌ها
Ammonium oxidation؛ phenol؛ salinity؛ Nitritation؛ DHS
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