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1. 发明授权

US5630934A In-situ treatment system for inhibiting the formation of, and for alleviating, acidity in water 失效
标题翻译：用于抑制水中酸性和缓解酸性的原位处理系统
公开(公告)号：US5630934A
公开(公告)日：1997-05-20
申请号：US518334
申请日：1995-08-23
申请人： Ward Chesworth , Gene S. Shelp , Barry J. Shelp
发明人： Ward Chesworth , Gene S. Shelp , Barry J. Shelp
IPC分类号： B09C1/08 , C02F1/461 , C02F1/467 , C02F1/46
CPC分类号： B09C1/085 , C02F1/46176 , C02F1/4676
摘要： Treatment is described for acidity caused by water seeping down through a seam of acid-generating mineral such as pyrite. The pyrite oxidises through exposure to the atmosphere (as a result of mine workings). The treatment system creates an galvanic cell, using the submerged portion of the pyrite seam as the cathode, the water in the aquifer as the electrolyte, and a body of scrap iron immersed in the water as the (sacrificial) anode. Contact rods are inserted into the pyrite seam, and are connected, via a cable, to the body of scrap iron, which is placed in a nearby pond. Hydrogen ions migrate to the cathode and bubble off as hydrogen gas, raising the pH. The acid generating reactions in the pyrite seam are inhibited, and acid concentrations in the already contaminated water in the pond and in the aquifer are reduced. In an alternative, the exposed beaches of pyrite in a tailings pond are provided with grids of metal mesh or graphite in place of the inserted rods. The grids provide a better contact with the pyrite.
摘要翻译：描述了由于通过诸如黄铁矿等酸性矿物的接缝渗水而引起的酸性的处理。黄铁矿通过暴露于大气中（作为矿井作业的结果）而氧化。处理系统使用黄铁矿接缝的浸没部分作为阴极，含水层中的水作为电解质，以及作为（牺牲）阳极浸入水中的废铁体，形成原电池。接触棒插入黄铁矿接缝中，并通过电缆连接到放置在附近池塘中的废铁体。氢离子迁移到阴极并作为氢气起泡，提高pH。黄铁矿接缝中的酸生成反应被抑制，池塘和含水层已经被污染的水中的酸浓度降低。另一种替代方案是，在尾矿池中暴露的黄铁矿海滩中提供金属网格或石墨网格代替插入的杆。栅格提供了与黄铁矿更好的接触。

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