Inactivation of ANAMMOX communities under concurrent operation of anaerobic ammonium oxidation (ANAMMOX) and denitrification

被引：290

作者：

Chamchoi, N. ^{[1
]}

Nitisoravut, S. ^{[1
]}

Schmidt, J. E. ^{[2
]}

机构：

[1] Thammasat Univ, Sirindhorn Int Inst Technol, Sch Bio Chem Engn & Technol, Pathum Thani 12121, Thailand

[2] Tech Univ Denmark, Inst Environm & Resources, DK-2800 Lyngby, Denmark

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 09期

关键词：

anaerobic ammonium oxidation; COD : N ratio; denitrification; nitrogen removal; hydrazine production;

D O I：

10.1016/j.biortech.2007.08.029

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A concurrent operation of anaerobic ammonium oxidation (ANAMMOX) and denitrification was investigated in a well known UASB reactor seeding with both ANAMMOX and anaerobic granular sludges. ANAMMOX activity was confirmed by hydroxylamine test and the hybridization of biomass using the gene probes of Amx 820 and EUB 338 mixed. Denitrification was observed through the reductions of both COD and nitrate-nitrite concentrations under anaerobic/anoxic conditions. By providing a stoichiometric ratio of nitrite to ammonium nitrogen with addition nitrate nitrogen, a gradual reduction of ANAMMOX activity was found with an increase of COD concentration in a range of 100-400 mg l(-1). This is equivalent to the COD to N ratio of 0.9-2.0. The COD concentration was found to be a control variable for process selection between ANAMMOX reaction and denitrification. A reduction of COD and nitrite-nitrate concentrations in all reactors confirmed the undergone concurrent denitrification which thrives when sufficient organic matter is available. COD concentration over 300 mg l(-1) was found to inactivate or eradicate ANAMMOX communities. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：3331 / 3336

页数：6

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