Theoretical technique for determining the cumulative impact of iron and manganese oxidation in streams receiving coal-mine discharge

Conference · Sun Dec 01 04:00:00 EST 1985 · Univ. Ky., Off. Eng. Serv., (Bull.); (United States)

OSTI ID:5547427

Bobay, K E; Banaszak, K J

Two US Geological Survey computer programs are modified and linked to predict the cumulative impact of iron and manganese oxidation in coal-mine discharge on the dissolved-chemical quality of a receiving stream. The coupled programs calculate the changes in dissolved-iron, dissolved-manganese, and dissolved-oxygen concentrations, and the pH of surface water downstream from the discharge. First, the one-dimensional, steady-state stream water-quality program uses a dissolved-oxygen model to calculate the concentration changes as a function of the reaction rates and the time-of-travel. Second, a program combining pH, reduction-oxidation potential, and equilibrium equations (PHREEQE) uses an aqueous-ion association model to determine the saturation indices and to calculate the pH; it then mixes the discharge with a receiving stream. The kinetic processes of the first program dominate the system, whereas the equilibrium thermodynamics of the second define the limits of the reactions. A comprehensive test of the technique was not possible because a complete set of data was not available. However, the cumulative impact of representative discharges from several coal mines on stream quality in a small watershed in southwestern Indiana was simulated to determine the effectiveness and sensitivity of the coupled programs. 20 references, 5 figures, 3 tables.

• Research Organization: Geological Survey, Indianapolis, IN
• OSTI ID: 5547427
• Report Number(s): CONF-851213-
• Conference Information: Journal Name: Univ. Ky., Off. Eng. Serv., (Bull.); (United States)
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010900* -- Coal
Lignite
& Peat-- Environmental Aspects
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
CHEMICAL REACTIONS
CHEMISTRY
COAL MINING
COMPUTER CALCULATIONS
COMPUTERIZED SIMULATION
CONCENTRATION RATIO
CONTROL
ECOLOGICAL CONCENTRATION
ELEMENTS
ENVIRONMENTAL IMPACTS
ENVIRONMENTAL QUALITY
FEDERAL REGION V
HYDROGEN COMPOUNDS
INDIANA
IRON
LIQUID WASTES
MANGANESE
MATHEMATICAL MODELS
METALS
MINING
NATIONAL ORGANIZATIONS
NORTH AMERICA
OXIDATION
OXYGEN COMPOUNDS
PH VALUE
POLLUTION
POLLUTION CONTROL
QUANTITY RATIO
REDOX POTENTIAL
SIMULATION
SURFACE MINING
TRANSITION ELEMENTS
US DOI
US GS
US ORGANIZATIONS
USA
WASTE WATER
WASTES
WATER
WATER CHEMISTRY
WATER POLLUTION
WATER POLLUTION CONTROL
WATER QUALITY