DENITRIFICATION BY THERMOPHILIC SOIL BACTERIA WITH ETHANOL AS SUBSTRATE IN A USB REACTOR

被引：19

作者：

LAURINO, CN

SINERIZ, F

机构：

[1] Planta Piloto de Procesos Industriales Microbiologicos (PROIMI), San Miguel de Tucuman

来源：

BIOTECHNOLOGY LETTERS | 1991年 / 13卷 / 04期

关键词：

D O I：

10.1007/BF01041489

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：

Thermophilic biological denitrification was studied in a laboratory-upflow sludge blanket reactor fed with ethanol as carbon and energy source. High denitrification efficiency (> 98%) was obtained at an ethanol:nitrate ratio > 2 and at a hydraulic retention time (HRT) of 5 hours. The performance of the system with respect to nitrate removal was very satisfactory (> 95%), even at high nitrate (235 mg NO3-N/L) and hydraulic (3 hours HRT) loading rates applied. A stable sludge was formed by spherical granules 1 to 3 mm in diameter with a content of 25,8 g VS/L and were almost exclusively composed of bacteria belonging to the genus Bacillus.

引用

页码：299 / 304

页数：6

共 16 条

[11]

MCCARTY PL, 1969, 24TH IND WAST C, V24, P1271

[12] DENITRIFICATION AT VARIOUS CARBON TO NITROGEN RATIOS [J].