期刊
BIORESOURCE TECHNOLOGY
卷 148, 期 -, 页码 467-473出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2013.08.134
关键词
Autotrophic nitrogen removal; Nitritation; Anammox; Low strength UASB effluent; Sequencing batch reactor
资金
- Marie-Curie FP7-PEOPLE-2012-CIG 'Low Environmental Footprint Biological Treatment Processes for Waste and Wastewater Treatment'
The start-up of the completely autotrophic nitrogen removal process was examined in a sequencing batch reactor (SBR) using low activity anoxic ammonium oxidation (anammox) inoculum. The SBR received effluent from an upflow anaerobic sludge blanket (UASB) that treated low strength wastewater. The volumetric nitrogen loading rate (vNLR) was first 0.24 +/- 0.11 kg N m(-3) d(-1) and then reduced to 0.10 +/- 0.02 kg N m(-3) d(-1). The average specific anammox activity was 2.27 +/- 1.31 mg N (gVSS h)(-1), at 30 degrees C representing an increase of 161% compared to the inoculum. The decrease in vNLR did not significantly affect anammox activity, but resulted in a decrease of denitrifying heterotrophic activity to very low levels after the first 30 days owing to the decrease of organic loading rate (OLR). Fluorescence in situ hybridization (FISH) analysis confirmed the stable presence of anammox bacteria in biomass. Numerous filamentous microorganisms were present, several of which were in a state of endogenous respiration. (C) 2013 Published by Elsevier Ltd.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据