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首页> 外文期刊>RSC Advances >Enhancement of anammox performance in a novel non-woven fabric membrane bioreactor (nMBR)
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Enhancement of anammox performance in a novel non-woven fabric membrane bioreactor (nMBR)

机译：新型无纺布膜生物反应器（nMBR）中厌氧氨氧化性能的增强

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摘要

To reduce operating costs and membrane fouling of conventional membrane bioreactors (cMBR), a novel MBR using a non-woven fabric membrane (nMBR) was constructed and the performance of the two MBRs was compared for anaerobic ammonium oxidation (anammox) cultivation. The results showed that the start-up period for the nMBR (44 days) was notably shorter than that for the cMBR (56 days), meanwhile the nMBR achieved a 2-times higher nitrogen removal rate (231.5 mg N per L per d) compared to the cMBR (112.3 mg N per L per d). Illumina MiSeq sequencing showed that Candidatus Kuenenia and Candidatus Jettenia were the main distinguished anammox bacteria. FISH analysis revealed that anammox bacteria predominated in both reactors, especially in the nMBR (58%) corresponding to a qPCR analysis of 1.07 x 10(9) copies per mL (day 120). N2O emission analysis confirmed the advantage of the nMBR in N2O reduction to reduce the influence of greenhouse gas emission while treating identical nitrogen. These results clearly demonstrated that nMBRs could be a prospective choice for anammox start-up and performance enhancement.
机译：为了降低常规膜生物反应器（cMBR）的运行成本和膜污染，构建了使用无纺布膜（nMBR）的新型MBR，并比较了两种MBR在厌氧铵氧化（anammox）培养中的性能。结果表明，nMBR的启动时间（44天）明显短于cMBR的启动时间（56天），同时nMBR的脱氮率提高了2倍（231.5 mg N / L / d）与cMBR相比（每升每天112.3 mg N）。 Illumina MiSeq测序表明，念珠菌和肯特菌是主要的厌氧菌。 FISH分析表明，厌氧细菌在两个反应器中均占优势，尤其是在nMBR中（占58％），这相当于每毫升1.07 x 10（9）拷贝的qPCR分析（第120天）。 N2O排放分析证实了nMBR在减少N2O方面的优势，可在处理相同氮的同时减少温室气体排放的影响。这些结果清楚地表明，nMBR可能是厌氧氨氧化启动和性能增强的潜在选择。

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