Management of coal processing wastes: Studies on an alternate technology for control of sulfate and chloride discharge
Management of coal mining and coal processing wastes, particularly of high sulfur coals,can generate excessive amounts of Sulfate (SO42-) and Chloride (Cl-) in mine drainage that are known to negatively impact quality of both surface and ground water.The U.S.Environmental Protection Agency (USEPA) provides guidance on allowable SO42-and chloride C1-discharges from mine sites.This research evaluates the hypothesis that co-disposal of CCPW and FCPW with appropriate compaction can result in improved geochemical and geotechnical environments that will minimize Acid Mine Drainage (AMD)formation and SO42-and C1-discharges.Addition of ground limestone (ag-lime) to the mix was also evaluated as a drying agent and for improvement in overall geochemistry by buffering higher pH values within the coal waste.These objectives were to develop and implement innovative concepts for engineered co-management of CCPW and FCPW at coal mining sites.The authors performed long-term field column leaching studies to analyze improvement in SO42-and Cl-in water quality.Requirements for stricter standards in some states led to the need for development of potentially improved environmental practices.This paper presents the overall encouraging results of the field kinetic studies.
Paul T.Behum Yoginder P Chugh Liliana Lefticariu
Office of Surface Mining and Reclamation Enforcement, Alton, Illinois, USA Southern Illinois University Carbondale, Carbondale, Illinois, USA Department of Geology, Southern Illinois University Carbondale, Illinois, USA
国际会议
The 2nd International Symposium on Land Reclamation and Ecological Restoration (第二届国际土地复垦与生态修复学术研讨会)
西安
英文
473-483
2017-10-20（万方平台首次上网日期，不代表论文的发表时间）