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首页> 外文会议>1998 Joint Conference on the Environment, 1998, Mar 31-Apr 1, 1998, Albuquerque, NM >Treatment of Inorganic Contaminants by Combined Microbial and Chemical Reduction
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Treatment of Inorganic Contaminants by Combined Microbial and Chemical Reduction

机译：微生物与化学还原相结合处理无机污染物

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摘要

This project, a very preliminary scoping study, showed that the combination of ZVI and microbiological activity can reduce a mixture contaminants including a metal (U), nitrate, and sulfate. It was further shown that incorporating the dual reductants ZVI and an organic substrate to stimulate anaerobic microbial growth can achieve reduction of high concentrations of sulfates without production of soluble sulfide species. Of special interest was the ability to reduce sulfates generally can not be reduced by ZVI alone. The principal limitations to sulfate reduction appear to be the high pH of the solution generated by the oxidation of the ZVI and, for the system considered here, the lack of a suitable organic energy source for the anaerobic bacteria. A better understanding of these constraints is needed prior to application of this process at a field site.
机译：该项目是一项非常初步的范围研究，表明ZVI和微生物活性的组合可以减少混合物污染物，包括金属（U），硝酸盐和硫酸盐。进一步表明，掺入双重还原剂ZVI和有机底物以刺激厌氧微生物的生长可以实现高浓度硫酸盐的还原，而不会产生可溶性硫化物。特别令人感兴趣的是，通常单独使用ZVI不能还原硫酸盐的能力。硫酸盐还原的主要限制似乎是ZVI氧化产生的溶液的高pH值，并且对于此处考虑的系统而言，缺少适合厌氧细菌的有机能源。在现场应用此过程之前，需要更好地了解这些限制条件。

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