by Federal Water Pollution Control Administration; for sale by the Supt. of Docs., U.S. Govt. Print. Off.] in [Washington .
Written in English
|Other titles||Studies of limestone treatment of acid mine drainage.|
|Series||Water pollution control research series|
|Contributions||Pennsylvania. Dept. of Mines and Mineral Industries., Pennsylvania. Dept. of Environmental Resources., United States. Federal Water Pollution Control Administration., United States. Environmental Protection Agency.|
|LC Classifications||TD899.M5 B545|
|The Physical Object|
|Pagination||ix, 96 p.|
|Number of Pages||96|
|LC Control Number||73608260|
Studies of Limestone Treatment of Acid Mine Drainage Part II by Bituminous Coal Research, Inc. for the Commonwealth of Pennsylvania Department of Environmental Resources and the ENVIRONMENTAL PROTECTION AGENCY EPA Grant No. EIZ December For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. - Price $ Results of a laboratory titration study indicated armored limestone was only 2 to 45% less effective in neutralizing a hydrochloric acid solution as unarmored limestone. A laboratory container study showed that armored limestone was 90% as effective in neutralizing AMD as unarmored limestone. The field study surveyed 2‐ to 8‐yr‐old, rock Cited by: iron acid mine drainage to determine the most economical method of treat- ment. Plant operation indicates that com- bination limestone-lime treatment with sludge recirculation on both treatment lines is the most economical scheme of treatment. Sludge studies indicate limestone treatment to high pH levels yielded sludges with the highest solids con-. The water treatment performances of two anoxic limestone drains (ALDs) were evaluated. Anoxic limestone drains are buried beds of limestone that are intended to add bicarbonate alkalinity to flow‐through acid mine drainage. Both ALDs received mine water contaminated with Fe 2+ (– mg L −1) and Mn (41–51 mg L −1).
Limestone is the most inexpensive of the common neutralizing agents and has been used f or many years in the treatment of AMD (Mihok et al. , Deul , Skousen et al. ). Limestone dissolves in contact with acid mine drainage, producing carbonate alkalinity and increasing pH. other treatment types in use anoxic limestone drains, open limestone channels, and land reconstruction are the most effective for reduction of acidity and metals. Keywords: mine drainage, load reduction, active treatment, passive treatment drainage problem and the technologies for acid mine drainage treatment in West Virginia. West. Acid mine drainage control technologies are measures that can be undertaken where. In a similar study at the Waite Am ulet Mine in Quebec, limestone for treatment. 1. Introduction. Acid mine drainage (AMD) is a major problem all over the world, especially where coal and gold mine activities are common. Once AMD is generated, it is difficult to control the process and the treatment also requires high cost (Aguiar et al., , Baruah and Khare, , Grande et al., , Qureshi et al., ).AMD causes severe environmental impacts, .
As this discussion demonstrates, the appropriate treatment chemical can depend on both the oxidation state and concentrations of metals in the AMD (U.S. Environmental Protection Agency, ). Hydrated lime is the most commonly used chemical for treating AMD and is used to treat more than 90% of the acid mine drainage worldwide. Also, to clearly describe the effectiveness and potential of algae based technology for removal of contaminants in acid mine drainage. Today algae based treatment is used in combination with secondary treatment. Microorganisms work in symbiosis with algae cells for an effective treatment. The study will contribute also in emphasizing on the. able to discharge from the mine, compounding the pollution problems. Some case studies included in this paper are the Wheal Jane mine, which in m3 of acid mine drainage (AMD) released into the environment (Hallberg and Johnson a), as well as mines in . characteristic of acid mine drainage. Average flow rate is L/s. To determine the effectiveness of different geochemical treatment strategies, small-scale trials consisting of a reduc-ing and alkalinity producing system (RAPS), a limestone leaching bed (LLB), and an open limestone channel (OLC) were operated for 8 months.