Inhibition of nitrification of ammonia-rich wastewater in immobilized nitrifiers system

被引：3

作者：

Li Zhirong ^{[1
]}

Zhang Zhi ^{[1
]}

Zhang Zhenjia ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China

来源：

ENVIRONMENTAL BIOTECHNOLOGY AND MATERIALS ENGINEERING, PTS 1-3 | 2011年 / 183-185卷

关键词：

ammonia; nitrification; inhibition; immobilization; NITROGEN REMOVAL; NITRITE;

D O I：

10.4028/www.scientific.net/AMR.183-185.197

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Inhibition of ammonia oxidation and nitrite oxidation was studied in an immobilized biomass system. Ammonia oxidizing bacteria (AOB) and nitrite oxidizing bacteria (NOB) suffered different inhibition in ammonia-rich wastewater. NOB started to be inhibited when FA (free ammonia) was 2mg/L, and was totally inhibited when FA was 8mg/L. AOB started to be inhibited when FA was 22mg/L, and tended to lose activity when FA was higher than 170mg/L. Inhibition kinetics of ammonia oxidation and nitrite oxidation could be described by Haldane model. Immobilization alleviated inhibition of FA to nitrifiers, maintaining high activity even at high strength ammonia solution. Partial nitrification could be achieved by varying degrees of inhibition of FA to AOB and NOB.

引用

页码：197 / 200

页数：4

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