In-situ Removal of Perchlorate with Nanoscale Particles

描述(申请人提供)：近年来，高氯酸盐已经成为对饮用水供应和环境的重大新威胁 据估计，它对地下水的污染可能会影响 美国至少1200万人的饮用水供应。 基于厌氧生化还原过程的生物反应器的使用已经 被评为最有前途的处理技术。然而， 生物反应器的处理引起了微生物的毒理学问题，而不是 一般被公众接受，需要额外的治疗。这些 生化过程是自然发生的，但由于不足而缓慢 电子供体。Lynntech，Inc.提出了一种使用纳米级的技术 铁颗粒产生溶解的氢作为电子供体 地下环境中的本土厌氧微生物使自然 生物降解足以将高氯酸盐去除到安全水平。这个 纳米级的铁颗粒由于其大小可以很容易地到达毛孔，供应 电子到达厌氧微生物，否则无法到达的区域，然后 都是通过抽水取回的。这项技术不需要构建 专为去除高氯酸盐而设计的生物反应器，但利用 作为自然产生的厌氧反应器的地下环境，因此 治疗成本将大幅降低。 建议的商业应用： 这项技术将被EPA、DOE、DOD和NASA等监管机构使用，这些机构的设施已被发现受到高氯酸盐污染。这项技术的成功开发可能被用于处理被水中的其他氧化污染物污染的水，如硝酸盐、溴酸盐和氯酸盐。

DESCRIPTION (provided by applicant): Perchlorate has emerged in recent years to become a significant new threat to drinking water supplies and the environment and its contamination of groundwater has been estimated to potentially affect the drinking water supplies of at least 12 million people in the United States. The use of bioreactors based on anaerobic biochemical reduction processes has been evaluated as the most promising treatment technology. However, the treatment by bioreactors poses toxicological problems by the microbes, not generally accepted to the public and needs an additional treatment. These biochemical processes are naturally occurring but slow because of insufficient electron donors. Lynntech, Inc. proposes a technology, which uses nanoscale iron particles to generate dissolved hydrogen as the electron donor for the indigenous anaerobic microbes in the subsurface environment so that the natural biodegradation can be sufficient to remove perchlorate to a safe level. The nanoscale iron particles due to its size can reach pores easily, supply electrons to the anaerobic microbes in regions otherwise unreachable, and then are retrieved by pumping. This technology requires no construction of bioreactors specifically designed for the perchlorate removal but utilizes the subsurface environment as a naturally occurring anaerobic reactor so that the treatment cost will be drastically reduced. PROPOSED COMMERCIAL APPLICATION: This technology will be used by regulatory agencies like EPA, DOE, DOD and NASA, of which facilities have been found to be contaminated with perchlorates. Successful development of this technology can potentially be used in treating water contaminated with other oxidized contaminants in water such as nitrate, bromate and chlorate.