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首页> 外文期刊>Journal of Environmental Science and Health >Biodegradation of MIB and geosmin with slow sand filters
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Biodegradation of MIB and geosmin with slow sand filters

机译：慢沙滤池对MIB和土臭素的生物降解

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摘要

This study evaluated the biodegradation of MIB (2-methylisoborneol) and geosmin (trans-1,10-dimethyl-frans- 9-decalol) in simulated slow sand filtration (SSF) columns and in batch reactors. The results showed that both MIB and geosmin were biodegradable in the two systems. In batch experiments, the overall removals for MIB and geosmin were 50% and 78%, respectively, after 7 days of contact time. Volatilization loss plays an important role for geosmin in batch systems. Simulated SSF column studies also showed that more than 50% of geosmin and MIB were degraded by the microbial on the sand surface of a slow sand filter. With a filtration rate of 5 m/day, the simulated SSF degraded MIB from 48% to 69% and geosmin from 87% to 96%. The rapid biodegradation of MIB and geosmin in SSF column tests was attributed to the use of filter sands from the SSF unit in the Kinmen water treatment plant, where the microbial had been acclimated to both MIB and geosmin. The results also showed that more than 70% of the geosmin was removed in the top portion of the filter (~10 cm); while the removal of MIB occurred throughout the entire column depth. The results of this study demonstrated that slow flow through preacclimated sand was effective for control of MIB and geosmin in drinking water.
机译：这项研究评估了模拟慢砂过滤（SSF）柱和间歇反应器中的MIB（2-甲基异冰片醇）和土臭素（反式1,10-二甲基-氟烷-9-癸醇）的生物降解作用。结果表明，两种系统中的MIB和土臭素均可生物降解。在分批实验中，接触7天后，MIB和土臭素的总去除率分别为50％和78％。挥发损失在批处理系统中对土臭味素起着重要作用。模拟的SSF色谱柱研究还显示，慢砂滤池的砂面微生物降解了超过50％的土臭素和MIB。以每天5 m的过滤速度，模拟的SSF将MIB从48％降至69％，将土臭素从87％降至96％。在SSF柱测试中，MIB和土臭素的快速生物降解是由于使用了金门水处理厂SSF装置中的滤砂，其中微生物已经适应了MIB和土臭素。结果还表明，在过滤器顶部（约10厘米），去除了超过70％的土臭素；而MIB的去除发生在整个色谱柱深度上。这项研究的结果表明，缓慢流过预先驯化的沙子可有效控制饮用水中的MIB和土臭素。

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  • 来源
    《Journal of Environmental Science and Health》 |2010年第8期|P.951-957|共7页
  • 作者

    SHU-TING HSIEH; TSAIR-FUH LIN; GEN-SHUH WANG;

  • 作者单位

    Institute of Environmental Health, National Taiwan University, Taipei, Taiwan;

    Department of Environmental Engineering, National Cheng-Kung University, Tainan, Taiwan Sustainable Environment Research Center, National Cheng-Kung University, Tainan, Taiwan;

    rnInstitute ofEnvironmental Health, National Taiwan University, Taipei, Taiwan;

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

    taste and odor; drinking water; MIB; geosmin; slow sand filtration;

    机译：味道和气味;饮用水;MIB;土臭素慢砂过滤;

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