A study of methods to reduce groundwater contamination around the Kimpo landfill in Korea.
Four different methods were studied to reduce the groundwater contamination around the Kimpo landfill in Korea by leakage of a leachate. The hydraulic parameters were measured for this study and then the groundwater flow and contaminant transport systems around the Kimpo landfill were simulated with MODFLOW and MT3D models. Both the method of establishing 5 sets of Radial Collector Well Laterals (RCWLs) within the landfill and a method utilizing the wells for dewatering condensed water brought about a 70% leachate elimination efficiency. Their construction costs were cheap, and the maximum concentrations of chloride and phenol in the leachate effluent were high. Meanwhile, a method establishing an interception wall to the 2nd layer at the cirumference of the landfill and 22 sets of RCWLs within it brought about a 92% leachate elimination efficiency. Its construction cost was expensive, and the maximum concentrations of chloride and phenol in the leachate effluent were low. A method of establishing an interception wall to the 3rd layer and 40 sets of RCWLs brought about a 97% leachate elimination efficiency. Its construction cost was the most expensive, and the maximum concentrations of chloride and phenol were low. Conclusively, a method of establishing 22 sets of RCWLs was evaluated as the most stable and economical option to reduce groundwater contamination concentration below drinking water standard.
Kim
G
G
Korea Atomic Energy Research Institute, Yusong, Daejeon.
Shon
J
J
Won
H
H
Hyun
J
J
Oh
W
W
D003362:Cost-Benefit Analysis; D005160:Facility Design and Construction; D005374:Filtration; D007723:Korea; D012037:Refuse Disposal; D012989:Soil Pollutants / Q000032:analysis*; D014872:Water Movements; D014876:Water Pollution / Q000191:economics / Q000517:prevention & control*; D014881:Water Supply
D012989:Soil Pollutants