(PDF) Operational Performance of Vertical Upflow Roughing ...
It experiments in which limestone was used as a filter has been found that the leachate from a semi-aerobic medium to treat an iron acid solution (27.9 mg iron/L). system has slightly lower organic contaminants Aziz et al. (2004) reported 90% removal of iron by compared with an anaerobic landfill in terms of BOD limestone filter from landfill ...