Achievement of high nitrite accumulation via endogenous partial denitrification (EPD)

被引：97

作者：

Ji, Jiantao ^{[1
]}

Peng, Yongzhen ^{[1
]}

Wang, Bo ^{[1
]}

Wang, Shuying ^{[1
]}

机构：

[1] Beijing Univ Technol, Engn Res Ctr Beijing, Natl Engn Lab Adv Municipal Wastewater Treatment, Beijing 100124, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2017年 / 224卷

关键词：

Endogenous partial denitrification; Nitrite accumulation; PHAs; Glycogen; Anammox; BIOLOGICAL NITROGEN REMOVAL; SEQUENCING BATCH REACTOR; POSTANOXIC DENITRIFICATION; STORED POLYMERS; CARBON SOURCE; ANAMMOX; ORGANISMS; SLUDGE; SEWAGE; CANON;

D O I：

10.1016/j.biortech.2016.11.070

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study proposed a novel strategy for achievement of partial denitrification driven by endogenous car-bon sources in an anaerobic/anoxic/aerobic activated sludge system. Results showed that in the steady-stage, the nitrate-to-nitrite transformation ratio (NTR) was kept at around 87% without nitrate in the effluent. During the anaerobic period, exogenous carbon sources was completely taken up, accompanied by the consumption of glycogen and production of polyhydroxyalkanoates (PHAs). During the anoxic per-iod, nitrate was reduced to nitrite by using PHAs as carbon sources, followed by the replenishment of glycogen. Thus, the phenotype of denitrifying GAOs was clearly observed and endogenous partial denitrification (EPD) occurred. Furthermore, results showed the nitrate reduction was prior to the nitrite reduc-tion in the presence of nitrate, which led to the high nitrite accumulation. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：140 / 146

页数：7

共 32 条

[1] Upgrading of sewage treatment plant by sustainable and cost-effective separate treatment of industrial wastewater [J].