Record Display for the EPA National Library Catalog


Main Title Appraisal of Neutralization Processes to Treat Coal Mine Drainage.
Author Lovel, Harold L. ;
CORP Author Pennsylvania State Univ., University Park. Coll. of Earth and Mineral Sciences.
Year Published 1973
Report Number EPA-14010-EFN; 06512,; 670/2-73-093
Stock Number PB-231 249
Additional Subjects Coal mines ; Mine waters ; Industrial waste treatment ; Neutralizing ; Sludge disposal ; Dewatering ; Calcium carbonates ; Limestone ; Magnesium carbonates ; Sodium carbonates ; Sodium hydroxide ; Bacteria ; Oxidation ; Aerobic processes ; Cost engineering ; Water pollution control ; Mine acid drainage
Library Call Number Additional Info Location Last
NTIS  PB-231 249 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 364p
Four different quality drainages were treated and detailed results tabulated. Appropriate unit operations, from water collection to sludge disposal were considered for eight different reagents (calcium/magnesium carbonate, oxide and hydroxide; caustic soda and soda ash). Necessary process variations were possible with a versatile 500,000 gpd facility. Limestone has the least cost per neutralization equivalent and may be used with drainage containing up to 500 mg/l iron II. The resulting sludge is dense, rapid settling and dewaterable. Thickeners are preferred to settling lagoons to separate sludge in larger plants. Dewatered sludge requires least disposal volume.