Effect of external hydrazine addition on anammox reactor start-up time

被引：36

作者：

Ganesan, Sivarajah ^{[1
]}

Vadivelu, Vel Murugan ^{[1
]}

机构：

[1] Univ Sains Malaysia, Sch Chem Engn, USM Engn Campus, Nibong Tebal 14300, Penang, Malaysia

来源：

CHEMOSPHERE | 2019年 / 223卷

关键词：

Anaerobic ammonium oxidation; Start-up time; Hydrazine; Heme C; Nitrous oxide gas; AUTOTROPHIC NITROGEN REMOVAL; AMMONIUM-OXIDIZING BACTERIA; ENRICHMENT; OXIDATION; SCALE; BIOCHEMISTRY; INHIBITION; DISCOVERY; OPERATION; COMMUNITY;

D O I：

10.1016/j.chemosphere.2019.02.104

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Hydrazine is an intermediate product of the anaerobic ammonium oxidation (Anammox) process where both ammonium and nitrite in wastewater are converted to nitrogen gas by bacteria. In this study the effect of external hydrazine addition (5, 10, 15, and 20 mg/L) on the start-up period of the Anammox process was studied using sequencing batch reactors (SBRs). The SBR with an addition of 10 mg/L hydrazine took only 7 weeks to stabilize and achieve the maximum removal of ammonium and nitrite, whereas the SBR without the addition of hydrazine took 12 weeks. The amount of Heme C extracted from the biomass indicated that externally added hydrazine accelerated the growth of Anammox bacteria and reduced the release of nitrous oxide gas from the reactors. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：668 / 674

页数：7

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