Improvement in ammonium removal efficiency in wastewater treatment by mixed culture of Alcaligenes faecalis no. 4 and L1

被引：78

作者：

Joo, Hung-Soo ^{[1
]}

Hirai, Mitsuyo ^{[1
]}

Shoda, Makoto ^{[1
]}

机构：

[1] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

JOURNAL OF BIOSCIENCE AND BIOENGINEERING | 2007年 / 103卷 / 01期

关键词：

mixed culture; ammonium removal; heterotrophic nitrification; aerobic denitrification; Alcaligenes faecalis no. 4 and L1;

D O I：

10.1263/jbb.103.66

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：

To improve ammonium removal efficiency in wastewater treatment, a mixed culture of Alcali-genes faecalis no. 4 and its mutant L1, both of which have heterotrophic nitrification and aerobic denitrification abilities, was performed. In a batch culture, no. 4 has a higher denitrification ability than L1, but its ammonium removal rate was lower. In a mixed continuous culture in the ammonium loading range of 750 to 3500 mg-N/l/d, the average ammonium removal rate and the average denitrification ratio were 61 mg-N/l/h and 31%, respectively. In the mixed culture, the ammonium removal rate was twofold higher than that in a single culture of no. 4, the rate was similar to that in a single culture of L1, and the denitrification ratio was very high compared with that in the single culture of L1.

引用

页码：66 / 73

页数：8

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