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首页> 外文期刊>Chemosphere >Long-term impact of sulfate on an autotrophic nitrogen removal system integrated partial nitrification, anammox and endogenous denitriflcation (PAED)
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Long-term impact of sulfate on an autotrophic nitrogen removal system integrated partial nitrification, anammox and endogenous denitriflcation (PAED)

机译：硫酸盐对自养氮去除系统的长期影响，该系统集成了部分硝化，厌氧氨氧化和内源性反硝化（PAED）

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摘要

A nitrogen removal system integrating partial nitrification, anaerobic ammonium oxidation (Anammox) and endogenous denitrification (PAED) was established in a sequencing batch reactor (SBR) for treating low nitrogen sewage (approximately 40 mg L-1 ammonia-nitrogen). The impact of sulfate on PAED sludge was investigated in five identical SBRs, fed with different levels of sulfate (0, 50, 100, 200 and 400 mg L-1). Ammonia oxidation was improved by the addition of Results showed that the sulfate addition in low concentration of sulfate (<= 50 mg L-1), but was profoundly suppressed by higher levels of sulfate. Sulfate feeding enhanced both total nitrogen removal by Anammox and endogenous denitrification, with the abundance of Candidatus Kuenenia increasing to 4.39% in 400 mg L-1 sulfate from 0.83% in the control reactor, and Denitratisoma increasing to 6.35% from 2.77%. The results proved the feasibility of the PAED system in treating low nitrogen sewage with sulfate, which also enhanced the nitrogen sulfate interaction. (C) 2019 Elsevier Ltd. All rights reserved.
机译：在顺序分批反应器（SBR）中建立了将部分硝化，厌氧铵氧化（Anammox）和内源性反硝化（PAED）集成在一起的脱氮系统，用于处理低氮污水（约40 mg L-1氨氮）。在五个相同的SBR中，以不同水平的硫酸盐（0、50、100、200和400 mg L-1）进料，研究了硫酸盐对PAED污泥的影响。结果表明，低浓度的硫酸盐（<= 50 mg L-1）中的硫酸盐添加得到了改善，但被较高水平的硫酸盐所抑制。硫酸盐进料提高了通过厌氧氨氧化法去除的总氮和内源性反硝化作用，Kandoniatus Kuenenia在400 mg L-1硫酸盐中的丰度从对照反应器中的0.83％增加到4.39％，而尖锐湿疣从2.77％增加到6.35％。结果证明了PAED系统在用硫酸盐处理低氮污水中的可行性，也增强了硫酸氮的相互作用。 （C）2019 Elsevier Ltd.保留所有权利。

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