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首页> 外文期刊>Chemosphere >Simultaneous autotrophic biodegradation of H_2S and NH_3 in a biotrickling filter
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Simultaneous autotrophic biodegradation of H_2S and NH_3 in a biotrickling filter

机译：在生物滴滤池中同时自养生物降解H_2S和NH_3

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摘要

An efficient co-treatment of H_2S and NH_3 was achieved in a horizontal biotrickling filter (HBTF) inoculated by autotrophic nitrifying and sulfide-oxidizing microbial consortia and packed with exhausted carbon. NH_3 and H_2S were removed completely at the beginning of operation, in terms of nitrate and sulfate mainly by autotrophic biodegradation, respectively. Under the steady state, removal efficiency (RE) of H_2S and NH_3 was investigated with different gas retention times (GRT = 4-20s), inlet concentrations (20-100 ppmv) and inlet loadings. At GRT > 4 s, above 98% of NH_3 was removed while 95% RE of H_2S was reached at CRT > 8 s. The critical elimination capacity (at 99% RE) was attained at 44 g NH_3 M~(-3) H~(-1) and 36 g H_2S m~(-3) h~(-1), and no interaction between NH_3 and H_2S treatment was found at low loadings. Furthermore, the experiment at high loadings of NH-3 and H_2S was purposely designed to evaluate the potential inhibition of each other. The metabolic products of N and S bearing species in recycling liquid were analyzed to explore the removal mechanisms. Compared with previous studies, the present filter showed a better removal capacity of NH-3 and H_2S. Overall, the results indicated that the HBTF was highly efficient and cost-effective for simultaneous autotrophic biodegradation of NH_3 and H_2S.
机译：在通过自养硝化和硫化物氧化微生物菌群接种并填充有耗尽的碳的水平生物滴滤池（HBTF）中，实现了H_2S和NH_3的有效共处理。在操作开始时，就硝酸盐和硫酸盐而言，主要通过自养生物降解，分别去除了NH_3和H_2S。在稳态下，研究了在不同的气体停留时间（GRT = 4-20s），入口浓度（20-100 ppmv）和入口负荷下，H_2S和NH_3的去除效率（RE）。在GRT> 4 s时，去除了98％以上的NH_3，而在CRT> 8 s时达到了95％的H_2S RE。在44 g NH_3 M〜（-3）H〜（-1）和36 g H_2S m〜（-3）h〜（-1）时达到临界消除能力（在99％RE时），并且NH_3之间没有相互作用在低负荷下发现了H_2S处理。此外，特意设计了高负荷NH-3和H_2S的实验，以评估彼此之间的潜在抑制作用。分析了回收液中含氮和硫物质的代谢产物，探讨了其去除机理。与以前的研究相比，本过滤器显示出更好的NH-3和H_2S去除能力。总体而言，结果表明，HBTF对于同时自养生物降解NH_3和H_2S具有很高的效率和成本效益。

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  • 来源
    《Chemosphere》 |2009年第10期|1350-1355|共6页
  • 作者

    Xia Jiang; Rong Yan; Joo Hwa Tay;

  • 作者单位

    School of Civil and Environmental Engineering. Nanyang Technological University, Blk N1, 50 Nanyang Avenue, Singapore 639798, Singapore;

    Institute of Environmental Science and Engineering. Nanyang Technological University, Innovation Center, Block 2, Unit 237, 18 Nanyang Drive. Singapore 637723. Singapore;

    School of Civil and Environmental Engineering. Nanyang Technological University, Blk N1, 50 Nanyang Avenue, Singapore 639798, Singapore;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    hydrogen sulfide; ammonia; biotrickling filter; exhausted carbon; co-removal; autotrophic biodegradation;

    机译：硫化氢氨;生物滴滤池;废碳共同搬迁;自养生物降解;

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