Leachates from a municipal solid waste landfill were treated in an anaerobic filter and in a double stage activated sludge system in order to remove ammonia and BOD. Complete ammonia removal was achieved in the aerobic reactor while nitrate transformation was carried out in the anoxic reactor. Effluents were treated in a following chemical stage with Fenton’s reagent, to increase the BOD5/COD ratio. A final activated sludge treatment with anoxic and aerobic stage removed the residual nitrate and COD. With the overall treatment about 2000-2200 mg/l N-NH4+ was removed and 15-18 g/l of COD in the raw leachate was reduced to 100-200 mg/l.
Chemical and biological treatment of landfill leachate / DI PALMA, Luca; Merli, Carlo; Petrucci, Elisabetta. - STAMPA. - 4:(2000), pp. 375-384. (Intervento presentato al convegno International symposium on sanitary and environmental engineering tenutosi a Trento, Italy nel 18-23 Settembre 2000).
Chemical and biological treatment of landfill leachate
DI PALMA, Luca;MERLI, Carlo;PETRUCCI, Elisabetta
2000
Abstract
Leachates from a municipal solid waste landfill were treated in an anaerobic filter and in a double stage activated sludge system in order to remove ammonia and BOD. Complete ammonia removal was achieved in the aerobic reactor while nitrate transformation was carried out in the anoxic reactor. Effluents were treated in a following chemical stage with Fenton’s reagent, to increase the BOD5/COD ratio. A final activated sludge treatment with anoxic and aerobic stage removed the residual nitrate and COD. With the overall treatment about 2000-2200 mg/l N-NH4+ was removed and 15-18 g/l of COD in the raw leachate was reduced to 100-200 mg/l.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
