Envirotreat were commissioned by Manchester City Council to undertake treatability trials of Blue Billy (spend oxide) waste at the Harpurhey Tip Site Manchester.
Manchester City Council reported total cyanide concentrations in excess of 8,000mg/kg and free cyanide concentrations in excess of 1,500mg/kg.
The treatability trials demonstrated that the E-Clay Technology chemically stabilised the contaminants of concern to reduce their bioavailability and potential to leach (< 20ug/l free cyanide) whilst simultaneously geotechnically improving the soil.
