摘要
酸矿排水(AMD ) 被中立化通常与碱的物质对待。这个处理被说明缓冲机制并且估计 AMD 的基础中立化能力(BNC ) 的滴定实验支持。滴定曲线的详细解释要求与一个水疗院化学药品模型一起当模特儿。在这研究，滴定从排水水样品弯同样 Pontes 矿和相应垃圾场被调查了，六个缓冲区被分析那些曲线选择。滴定曲线被一个反应运输模型模仿了发现详细缓冲机制。这些模拟显示出包含不同缓冲机制的七个区域。BNC 主要从溶解 Fe，艾尔和氢硫酸盐的缓冲区。BNC 能旁边被接近：BNC = 3 (CFe + CAl )+ 0.05Csulfate，在单位是 mol/L 的地方。从矿的样品的 BNC 是 9.25 ????????????
Acid mine drainage（AMD） is commonly treated by neutralization with alkaline substances.This treatment is supported by titration experiments that illustrate the buffering mechanisms and estimate the base neutralization capacity（BNC） of the AMD.Detailed explanation of titration curves requires modeling with a hydro-chemical model.In this study the titration curves of water samples from the drainage of the As Pontes mine and the corresponding dumps have been investigated and six buffers are selerted by analyzing those curves.Titration curves have been simulated by a reactive transport model to discover the detailed buffering mechanisms.These simulations show seven regions involving different buffering mechanism.The BNC is primarily from buffers of dissolved Fe,Al and hydrogen sulfate.The BNC can be approximated by：BNC = 3（C_（Fe） ＋ C_（Al）） ＋ 0.05C_（sulfate）,where the units are mol/L.The BNC of the sample from the mine is 9.25×10^（-3） mol/L and that of the dumps sample is 1.28×10^（-2） mol/L
