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Author: West Virginia University. Coal Research Bureau
Publisher:
ISBN:
Category : Acid mine drainage
Languages : en
Pages : 110
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Book Description
Sludge formed by the neutralization of acid mine drainage is generally affected by the acid mine water composition and the method of neutralization used. The effects of both raw water chemistry and the various treatment processes on sludge composition are enumerated for each treatment process. The methods discussed include: Conventional lime neutralization; Mechanical aeration; Lagoon aeration; pH; and Sludge recirculation. Several other processes, described and studied in slightly more detail, include the High Density Sludge Process, the Densator Process, the Elpo Treatment Process, and the use of magnetic sludge. Methods of thickening, conditioning and dewatering are also presented, with vacuum filtration appearing as the most feasible.
Author: West Virginia University. Coal Research Bureau
Publisher:
ISBN:
Category : Acid mine drainage
Languages : en
Pages : 110
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Book Description
Sludge formed by the neutralization of acid mine drainage is generally affected by the acid mine water composition and the method of neutralization used. The effects of both raw water chemistry and the various treatment processes on sludge composition are enumerated for each treatment process. The methods discussed include: Conventional lime neutralization; Mechanical aeration; Lagoon aeration; pH; and Sludge recirculation. Several other processes, described and studied in slightly more detail, include the High Density Sludge Process, the Densator Process, the Elpo Treatment Process, and the use of magnetic sludge. Methods of thickening, conditioning and dewatering are also presented, with vacuum filtration appearing as the most feasible.
Author: United States. Enviornmental Protection Agency
Publisher:
ISBN:
Category :
Languages : en
Pages : 110
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Book Description
Author: Terry E. Ackman
Publisher:
ISBN:
Category : Acid mine drainage
Languages : en
Pages : 36
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Book Description
Author: Robert C. Streeter
Publisher:
ISBN:
Category : Acid mine drainage
Languages : en
Pages : 136
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Book Description
Bench scale batch experiments were performed on sludges obtained from line neutralization of coal mine drainage in an attempt to alleviate present problems in sludge handling and disposal. Tests were of an exploratory nature and did not afford sufficient data for cost analyses. Ferro Magnetic sludge densification, filter aids, coagulant aids, heating, freeze drying, and coprecipitation of calcium carbonate through addition of CO2 were tested. Of these, freeze drying, CO2 addition, and ferro magnetic treatment were shown to be feasible alternatives to present disposal methods. Each of these methods resulted in settled sludge volume reduction of approximately 90% and increases in sludge solids contents of from 0.5 to about 5% after 30 min. settling periods. The ferro magnetic process has the advantages of possible recovery of a useful product, and elimination of costly settling lagoons, but is very sensitive to aluminum and requires a considerable amount of heat. Sludge freezing is the simplest conceptual approach and is apparently effective for any lime produced sludge. The CO2 addition method offers the possibility of partial recovery and recycling of both CaO and CO2 through sludge calcination.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 252
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Author: Industrial Environmental Research Laboratory (Cincinnati, Ohio)
Publisher:
ISBN:
Category : Acid mine drainage
Languages : en
Pages : 252
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Author: Environmental Research & Applications, Inc
Publisher:
ISBN:
Category : Acid mine drainage
Languages : en
Pages : 96
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Author: Terry E. Ackman
Publisher:
ISBN:
Category : Acid mine drainage
Languages : en
Pages : 20
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Author: R. H. Sprute
Publisher:
ISBN:
Category : Coal mine waste
Languages : en
Pages : 76
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Book Description
Author: Water Resources Scientific Information Center
Publisher:
ISBN:
Category : Acid mine drainage
Languages : en
Pages : 580
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