The objective of this study is to investigate the cost for disposal alternatives of waterworks sludge. Current disposal systems such as landfill, ocean dumping and incineration were compared with the sludge reuse through modification from economical p...
The objective of this study is to investigate the cost for disposal alternatives of waterworks sludge. Current disposal systems such as landfill, ocean dumping and incineration were compared with the sludge reuse through modification from economical point of view. When the cost spent in producing cover soil using waterworks sludge mixed with hydrated lime as a main material was assessed for Busan Metropolitan City area, the disposal cost was estimated to about 20,128 won per ton of waterworks sludge, which had more economical advantages than any other disposal methods. Environmental and economical benefits of sludge modification will include decrease of disposal cost, procurement of cover soils and reduction of landfill area.