Effect of influent substrate ratio on anammox granular sludge: performance and kinetics

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Effect of influent substrate ratio on anammox granular sludge: performance and kinetics
	Wang, Dan; Zhang, Peiyu; Dong, Huiyu; Li, Jin; Zhu, Weiqiang
刊名	BIODEGRADATION
	2017-12-01
卷号	28 期号:5 页码:437-452
关键词	Anammox Influent Substrate Ratio Nitrogen Removal Performance Kinetic Analysis
英文摘要	Effect of influent substrate ratio on anammox process was studied in sequencing batch reactor. Operating temperature was fixed at 35 +/- 1 degrees C. Influent pH and hydraulic retention time were 7.5 and 6 h, respectively. When influent NO2--N/NH4+-N was no more than 2.0, total nitrogen removal rate (TNRR) increased whereas NH4+-N removal rate stabilized at 0.32 kg/(m(3) d). Delta NO2--N/Delta NH4+-N increased with enhancing NO2--N/NH4+-N. When NO2--N/NH4+-N was 4.5, Delta NO2--N/Delta NH4+-N was 1.98, which was much higher than theoretical value (1.32). The IC50 of NO2--N was 289 mg/L and anammox activity was inhibited at high NO2--N/NH4+-N ratio. With regard to influent NH4+-N/NO2--N,the maximum NH4+-N removal rate was 0.36 kg/(m(3) d), which occurred at the ratio of 4.0. Anammox activity was inhibited when influent NH4+-N/NO2--N was higher than 5.0. With influent NO3--N/NH4+-N of 2.5-6.5, NH4+-N removal rate and NRR were stabilized at 0.33 and 0.40 kg/(m(3) d), respectively. When the ratio was higher than 6.5, nitrogen removal would be worsened. The inhibitory threshold concentration of NO2--N was lower than NH4+-N and NO3--N. Anammox bacteria were more sensitive to NO2--N than NH4+-N and NO3--N. TNRR would be enhanced with increasing nitrogen loading rate, but sludge floatation occurred at high nitrogen loading shock. The Han-Levenspiel could be applied to simulate nitrogen removal resulting from NO2--N inhibition.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39494]
专题	生态环境研究中心_环境水质学国家重点实验室
推荐引用方式 GB/T 7714	Wang, Dan,Zhang, Peiyu,Dong, Huiyu,et al. Effect of influent substrate ratio on anammox granular sludge: performance and kinetics[J]. BIODEGRADATION,2017,28(5):437-452.
APA	Wang, Dan,Zhang, Peiyu,Dong, Huiyu,Li, Jin,&Zhu, Weiqiang.(2017).Effect of influent substrate ratio on anammox granular sludge: performance and kinetics.BIODEGRADATION,28(5),437-452.
MLA	Wang, Dan,et al."Effect of influent substrate ratio on anammox granular sludge: performance and kinetics".BIODEGRADATION 28.5(2017):437-452.