Computational study of flow characteristics of acid mine drainage on the structure of oxidation pond

A computational flow analysis using the concept of the inflow age was conducted to evaluate the flow characteristics and retention time depending on the shape and number of inlets and outlets in an oxidation pond. The oxidation pond was rectangular in shape with a width-to-length ratio of 3, a depth of 3 m, an area of 500 m2, and square-shaped inlet and outlet. The flow rate of the mine drainage was set to 5 L/s. The computational flow analysis showed that the homogeneity and inflow exchange efficiency were the highest when the width-to-height ratio of the inlet and outlet was 0.5, while they were the lowest when it was 1.0. The number of inlets in the oxidation pond had a significant effect on the flow characteristics in the pond, whereas the number of outlets had no significant effect. The homogeneity and inflow exchange efficiency appeared to be the highest when the number of inlets was two.

[1]  S. B. Banks,et al.  THE UK COAL AUTHORITY MINEWATER‐TREATMENT SCHEME PROGRAMME: PERFORMANCE OF OPERATIONAL SYSTEMS , 2003 .

[2]  R. K. Tiwary,et al.  Environmental Impact of Coal Mining on Water Regime and Its Management , 2001 .

[3]  C. Zipper,et al.  Factors affecting alkalinity generation by successive alkalinity-producing systems: regression analysis. , 2001, Journal of environmental quality.

[4]  Martin Reinhard,et al.  Comparison of rhodamine WT and bromide in the determination of hydraulic characteristics of constructed wetlands , 2003 .

[5]  D. Nordstrom,et al.  Chapter 11. GEOMICROBIOLOGY OF SULFIDE MINERAL OXIDATION , 1997 .

[6]  R. Hedin,et al.  Mine Water: Hydrology, Pollution, Remediation , 2002 .

[7]  Paul F. Ziemkiewicz,et al.  Long-term Performance of Passive Acid Mine Drainage Treatment Systems , 2003 .

[8]  D. Nordstrom,et al.  Bacterially mediated mineral formation; insights into manganese(II) oxidation from molecular genetic and biochemical studies , 1997 .

[9]  H. Barnes,et al.  Chemical aspects of acid mine drainage , 1968 .

[10]  L. Barber,et al.  Conservative and reactive solute transport in constructed wetlands , 2004 .

[11]  D. M. Laine,et al.  Engineering design aspects of passive in situ remediation of mining effluents , 2003 .

[12]  Nicholas F. Gray,et al.  Environmental impact and remediation of acid mine drainage: a management problem , 1997 .

[13]  P. Younger,et al.  A Simple Analytical Model for Interpretation of Tracer Tests in Two-Domain Subsurface Flow Systems , 2004 .

[14]  P. Singer,et al.  Acidic Mine Drainage: The Rate-Determining Step , 1970, Science.

[15]  Dong-kil Lee,et al.  Study on distribution characteristics of some water parameters properties of mine drainage in an oxidation pond, Hwangji-Yuchang coal mine, South Korea , 2012, Environmental Earth Sciences.