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The Use of Hydrated Lime in Acid Mine Drainage Treatment

机译：水合石灰在酸性矿井排水处理中的使用

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Hydrated lime also known as calcium hydroxide with chemical formula Ca(OH)2 was used in this study as neutralization agent in acid mine drainage (AMD) treatment. Hydrated lime that is used to treat pool water samples from tin tailings located in Pengkalan Hulu, Perak was obtained from Simpang Pulai, Perak. The pH of water sample was around 2.6 to 2.8. Ten different variables of hydrated lime weights were used to treat 1 L of water sample. The weights of hydrated lime used were 0.2 g, 0.4 g, 0.6 g, 0.8 g, 1.0 g, 1.2 g, 1.4 g, 1.6 g, 1.8 g and 2.0 g. Time interval used was every 5 minutes up to minutes 30. Jar test method was used in this study. The maximum pH value of 5.93 ± 0.03 most approaches standard A and had complied standard B have been obtained using 2.0 g hydrated lime in 30-minute time interval. The concentration of arsenic, cadmium and chromium had decreased but only cadmium concentration did not comply with Standards A and B.
机译：在本研究中使用含有化学式Ca（OH）2的氢氧化钙的水合石灰作为酸性矿矿渗流（AMD）处理中的中和剂。用于治疗位于彭凯兰Hulu的锡尾部的池水样品的水合石灰从霹雳省获得霹雳，Perak获得。水样的pH约为2.6至2.8。使用十种不同的水性石灰重量变量治疗1升水样。所用水合石灰的重量为0.2g，0.4g，0.6g，0.8g，1.0g，1.2g，1.4g，1.6g，1.8g和2.0g。使用的时间间隔每5分钟高达30分钟30.在本研究中使用了罐子测试方法。在30分钟的时间间隔内使用2.0g水合石灰获得最大pH值5.93±0.03的最大接近标准A和已遵守的标准B.砷，镉和铬的浓度降低，但只有镉浓度不符合标准A和B.

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