SNAD生物膜厌氧氨氧化活性的氨氮抑制动力学研究

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Abstract The effect of ammonium concentrations on the anaerobic ammonium oxidation (Anammox) activity of simultaneous partial nitrification, anaerobic ammonium oxidization and denitrification (SNAD) biofilm was investigated in batch tests. The SNAD biofilm reactor performed stable nitrogen removal performance with the influent of domestic wastewater. The average influent NH₄⁺-N and COD concentrations were 70mg/L and 180mg/L, respectively. As a result, the average effluent NH₄⁺-N, NO₂^--N and NO₃^--N concentrations were 2mg/L, 2mg/L, 7mg/L and 50mg/L, respectively. The SNAD biofilm performed good Anammox activity. The NH₄⁺-N, NO₂^--N and total inorganic nitrogen (TIN) removal rates were 0.121kg N/(kg VSS·d), 0.180kg N/(kg VSS·d) and 0.267kg N/(kg VSS·d) with the initial NH₄⁺-N and NO₂^--N concentrations of both 70mg/L. Moreover, Haldane model was applied to investigate the ammonium inhibition on the Anammox process. There is no obvious difference in kinetic coefficients of ammonium inhibition under high or low FA conditions. As for M1 (FA ranges of 0.7mg/L and 20.4mg/L), the r_max, Ks and K_I of ammonium were 0.209kg NO₂^--N/(kg VSS·d), 9.5mg/L and 422mg/L. As for M2 (FA ranges of 6.3mg/L and 190.5mg/L), the r_max, Ks and K_I of ammonium were 0.221kg NO₂^--N/(kg VSS·d), 6.1mg/L and 597mg/L. Ammonium rather than FA is the main inhibitor for Anammox process.

Key words： SNAD biofilm Anammox ammonium inhibition kinetic characteristics

Received: 30 January 2016

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	Articles by authors
	ZHENG Zhao-ming
	LI Jun
	MA Jing
	DU Jia
	ZHAO Bai-hang

Cite this article:

ZHENG Zhao-ming,LI Jun,MA Jing等. The kinetic coefficients of ammonium inhibition on the Anammox activity of SNAD biofilm[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(10): 2957-2963.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2016/V36/I10/2957

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