DENITRIFICATION IN ANAEROBIC DIGESTERS - POSSIBILITIES AND INFLUENCE OF WASTE-WATER COD/N-NOX RATIO

被引：128

作者：

AKUNNA, JC ^{[1
]}

BIZEAU, C ^{[1
]}

MOLETTA, R ^{[1
]}

机构：

[1] INRA,BIOTECHNOL ENVIRONNEMENT IND AGROALIMENTAIRES LAB,BLVD GEN DE GAULLE,F-11100 NARBONNE,FRANCE

来源：

ENVIRONMENTAL TECHNOLOGY | 1992年 / 13卷 / 09期

关键词：

ANAEROBIC DIGESTION; DENITRIFICATION; AMMONIFICATION; METHANE; COD;

D O I：

10.1080/09593339209385217

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Laboratory-scale completely-stirred anaerobic digesters were fed with synthetic wastewaters containing nitrate and nitrite and with glucose as the only source of organic carbon in order to investigate and compare the denitrification potentials of anaerobic digesters in the presence of nitrate and nitrite. Varying the input nitrate and nitrite concentration at fixed COD and HRT, methane production without denitrification occurred at COD/N-NOx > 53 ; denitrification and methane production at 8.86 less-than-or-equal-to COD/N-NOx less-than-or-equal-to 53 and only denitrification at COD/N-NOx < 8.86. At COD/N-NOx > 53, ammonification appeared to be the main nitrate and nitrite reduction pathway. The successful competition of ammonia formers over the true denitrifiers at high ratios was attributed to the low initial nitrate and nitrite concentrations.

引用

页码：825 / 836

页数：12

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