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首页> 外文期刊>Clean technologies and environmental policy >Startup, performance, and microbial communities of an anammox reactor inoculated with indigenous sludge for the treatment of high-salinity and mesophilic underground brine
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Startup, performance, and microbial communities of an anammox reactor inoculated with indigenous sludge for the treatment of high-salinity and mesophilic underground brine

机译：厌氧菌反应器的启动，性能和微生物群落接种了本地污泥，用于处理高盐度和中温地下盐水

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摘要

Anaerobic ammonium oxidation (anammox) has been implemented as a cost-effective nitrogen removal process in wastewater treatment. To apply the process to saline wastewater treatment at temperatures below 30 degrees C, the effectiveness of marine anammox bacteria has been demonstrated in a pilot-scale reactor. Nevertheless, mesophilic conditions, often found in underground brine containing high NH4+ concentrations, have yet to employ an anammox process. The objective of this study was to enrich anammox bacteria capable of removing nitrogen from underground brine possessing a salinity of 3% and at a temperature over 30 degrees C. To select a promising inoculum, biomass from a brine settling tank in a natural gas plant was subjected to quantifying transcripts of anammox 16S rRNA and hydrazine oxidoreductase (hzo) genes by quantitative reverse transcription polymerase chain reaction. A fixed-bed column anammox reactor was fed with the selected inoculum and operated feeding underground brine mixed with NaNO2 solution at a temperature of 38 degrees C. As a result, a nitrogen removal rate (NRR) of 1.42kg-N/m(3)/day was obtained on day 167. An average NRR of 1.21kg-N/m(3)/day and nitrogen removal efficiency of 88% were maintained for 50days. Amplicon sequencing based on the 16S rRNA revealed that anammox bacteria which are phylogenetically close to Candidatus Kuenenia were successfully enriched in the reactor. These results indicate that nonmarine anammox bacteria can be active and predominant under both high-salinity and mesophilic conditions, making it a likely candidate for effective nitrogen removal from underground and waste brine.[GRAPHICS]
机译：厌氧铵氧化（厌氧氨）已被用作废水处理中的一种经济高效的脱氮工艺。为了将该工艺应用于温度低于30摄氏度的盐水处理中，已经在中试规模的反应器中证明了海洋厌氧细菌的有效性。然而，常在含有高NH4 +浓度的地下盐水中发现的中温条件尚未采用厌氧氨氧化工艺。这项研究的目的是富集能够从盐度为3％，温度超过30摄氏度的地下盐水中去除氮的厌氧细菌。为了选择有前景的接种物，天然气厂的盐水沉淀池中的生物质是通过定量逆转录聚合酶链反应对anammox 16S rRNA和肼氧化还原酶（hzo）基因的转录产物进行定量。给固定床厌氧氨氧化反应器喂入选定的接种物，并在38摄氏度的温度下向操作区喂入混合有NaNO2溶液的地下盐水。结果，脱氮率（NRR）为1.42kg-N / m（3 /天在167天获得。平均NRR为1.21kg-N / m（3）/天，除氮效率达88％，可维持50天。基于16S rRNA的扩增子测序表明，在系统发育上接近念珠菌Kanenia的厌氧细菌已成功富集在反应器中。这些结果表明，在高盐度和中温条件下，非海洋性厌氧氨氧化菌可以活跃并占主导地位，使其成为有效去除地下盐水和废盐水中氮的候选者。[GRAPHICS]

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  • 来源
    《Clean technologies and environmental policy》 |2019年第5期|1001-1011|共11页
  • 作者

    Yokota Nobuyuki; Mineshima Ryota; Yamaguchi Hideyuki; Hirase Tatsuaki; Ishikawa Hisayoshi; Azuma Takayuki; Hosomi Masaaki; Terada Akihiko;

  • 作者单位

    Kanto Nat Gas Dev Co Ltd, 661 Mobara, Mobara, Chiba 2978550, Japan|Tokyo Univ Agr & Technol, Dept Chem Engn, 2-24-16 Naka, Koganei, Tokyo 1848588, Japan;

    Kanto Nat Gas Dev Co Ltd, 661 Mobara, Mobara, Chiba 2978550, Japan;

    Kanto Nat Gas Dev Co Ltd, 661 Mobara, Mobara, Chiba 2978550, Japan;

    KRI Inc, Konohana Ku, 6-19-9 Torishima, Osaka 5540051, Japan;

    KRI Inc, Konohana Ku, 6-19-9 Torishima, Osaka 5540051, Japan;

    KRI Inc, Konohana Ku, 6-19-9 Torishima, Osaka 5540051, Japan;

    Tokyo Univ Agr & Technol, Dept Chem Engn, 2-24-16 Naka, Koganei, Tokyo 1848588, Japan;

    Tokyo Univ Agr & Technol, Dept Chem Engn, 2-24-16 Naka, Koganei, Tokyo 1848588, Japan|Tokyo Univ Agr & Technol, Inst Global Innovat Res, 3-8-1 Harumi, Fuchu, Tokyo 1838538, Japan;

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  • 正文语种 eng
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  • 关键词

    Anammox; Brine; Candidatus Kuenenia; Cultivation; Temperature;

    机译：厌氧氨水;盐水;南美白对虾;栽培;温度;

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