Use of organic covers for acid mine drainage control
Use of organic covers for acid mine drainage control
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DOI：
10.1016/s0892-6875(00)00036-4
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发表时间：
2000-05-01
影响因子：
4.8
通讯作者：
Halikia, I
中科院分区：
文献类型：
--
作者：
Peppas, A;Komnitsas, K;Halikia, I
有机覆盖物可用于防止氧扩散到活性硫化物废物中，并随后消除硫化物化合物氧化和酸性水的产生。与其他类型的盖板相比，其主要优点是低渗透性、高阳离子交换容量和高碱度。此外，有机覆盖物的建立被认为是一种低成本的解决方案，可以防止酸性矿井废水的产生，因为它们由工业废物而不是天然材料组成，不会扰乱自然环境，并且允许植被的发展，从而改善了填海地区的美学。但是，在排放之前必须对城市污水污泥进行处理，以便尽量减少因有毒元素的存在而造成的潜在健康和环境风险。在本文中，描述和讨论了与有机覆盖物功能相关的所有过程，包括城市污水污泥土地应用造成的潜在健康和环境风险。此外，本文还介绍和讨论了有机保护罩在活性硫精矿上应用的初步实验室数据，以评估保护罩的性能并确定影响其性能的关键因素。本研究工作的最终目的是建立一个实验模型，通过考虑年降雨量、有机材料高度、初始湿度和饱和条件下的湿度等关键参数，预测有机覆盖物的性能。(C) 2000, Elsevier Science Ltd.出版版权所有。
Organic covers may be used to prevent diffusion of oxygen into reactive sulphide wastes and subsequently to eliminate sulphide compounds oxidation and generation of acidic waters. The main advantages over other types of covers are related with their low hydraulic permeability, high cation exchange capacity and high alkalinity. In addition, the establishment of organic covers, which is considered as a low cost solution for the prevention of acid mine drainage generation, does not disturb the natural environment, since they consist of industrial wastes rather than natural materials and allow the development of vegetation which improves the aesthetics of the reclaimed areas. However, treatment of municipal sewage sludge is necessary prior to discharge, in order to minimize potential health and environmental risks, resulting from the presence of toxic elements.In the present paper all processes associated with the function of an an organic cover are described and discussed, including potential health and environmental risks resulting from land application of municipal sewage sludge. In addition, preliminary laboratory data derived from the application of organic coves over reactive sulphidic concentrates are presented and discussed, in order to evaluate the performance of the covers and to determine the critical factors affecting their performance. The final aim of this research work is the development of an experimental model, that predicts the performance of an organic cover, by taking into account critical parameters such as annual rainfall rate, organic material height, initial moisture and moisture under saturation conditions. (C) 2000 Published by Elsevier Science Ltd. All rights reserved.