Denitrification of high strength nitrate waste

被引：81

作者：

Dhamole, Pradip B.

Nair, Rashmi R.

D'Souza, Stanislaus F.

Lele, S. S. ^{[1
]}

机构：

[1] Univ Mumbai, Food & Fermentat Technol Dept, Inst Chem Technol, Bombay 400019, Maharashtra, India

[2] Bhabha Atom Res Ctr, Nucl Agr & Biotechnol Dept, Bombay 400085, Maharashtra, India

来源：

BIORESOURCE TECHNOLOGY | 2007年 / 98卷 / 02期

关键词：

high strength nitrate waste; sequencing batch reactor; acclimatization; specific denitrification rate; kinetics;

D O I：

10.1016/j.biortech.2006.01.019

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The aim of the present work was to study the treatment of high strength nitrate waste (40000 ppm NO3 i.e., 9032 ppm NO3-N) by acclimatizing sludge initially capable of degrading dilute streams (100-200 ppm NO3-N). Sludge from an effluent treatment plant of a fertilizer industry was acclimatized for 15 d each at 1694, 3388, 6774 and 9032 ppm NO3-N in a 4 L sequencing batch reactor. Complete denitrification of extremely concentrated nitrate waste (9032 ppm NO3-N) using acclimatized sludge was achieved in just 6 h. During the acclimatization period, increase in nitrite peak value from zero to 5907 ppm NO2-N was observed, as the concentration was increased from 1694 to 9032 ppm NO3-N. Kinetic analysis of the nitrate and nitrite profile could reasonably support microbiological explanations for nitrite build up and changes in sludge composition. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：247 / 252

页数：6

共 12 条

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