厌氧氨氧化工艺处理含海水污水的亚硝态氮抑制及反应动力学

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Abstract

An anaerobic sequencing batch reactor (ASBR) was operated to investigate the effects of nitrite on nitrogen removal via ANAMMOX by keeping influent ammonia nitrogen concentration as 110mg/L and increasing influent nitrite concentration at whole seawater condition. The kinetics features were also studied at the same time. ANAMMOX process began to be inhibited when the influent nitrite concentration was 170mg/L, and the ammonia nitrogen removal efficiency decreased 8.41%. The fitting of modified Logistic process kinetics model showed that influent nitrite less than 151.49mg/L would increase the nitrogen removal rate, while influent nitrite higher than 170mg/L would inhibited the nitrogen removal rate. The model of Luong suited to fit the inhibition kinetics with higher nitrite concentration which affected nitrogen removal efficiency. The maximum substrate removal rate (NRR_max) obtained by Luong model was 0.53kg N/(m³·d), and the half-saturation constant (K_S) was 0.10mg/L. The maximum allowable effluent nitrite concentration above which cells do not grow (S_m) was predicted to be 338.22mg/L and the correlation (n) was 0.97801.

Key words： seawater ANAMMOX nitrite inhibition kinetics process kinetics

Received: 16 October 2015

PACS:

X703.5

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	Articles by authors
	YU De-shuang
	QI Pan-qing
	LI Jin
	WEI Si-jia
	GUAN Yong-jie

Cite this article:

YU De-shuang,QI Pan-qing,LI Jin等. Treating sewage with seawater by ANAMMOX process: effects of nitrite and kinetics[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(5): 1400-1408.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2016/V36/I5/1400

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