6533b86cfe1ef96bd12c8127

RESEARCH PRODUCT

Treatment of leachate from MSWI bottom ash landfilling with anaerobic sulphate-reducing process

Jukka RintalaAri VäisänenLeena Sivula

subject

Environmental EngineeringMunicipal solid wasteIncinerationWaste Disposal Fluidchemistry.chemical_compoundMetals HeavyAnaerobiosisLeachateSulfateWaste Management and DisposalWater Science and TechnologyCivil and Structural EngineeringEthanolWaste managementSulfatesChemistryEcological ModelingExtraction (chemistry)PollutionCarbonRefuse DisposalTrace ElementsIncinerationCinderBariumBottom ashLysimeterEnvironmental chemistryCalciumOxidation-ReductionCopperWater Pollutants Chemical

description

Abstract Removal of sulphate and toxic elements from the leachate of a field landfill lysimeter ( 112 m 3 ) , containing municipal solid waste incineration (MSWI) bottom ash, was studied. The leachate was treated in two parallel laboratory upflow anaerobic sludge blanket (UASB) reactors without and with ethanol as additional carbon source. With ethanol more than 65% of sulphate was removed, while without ethanol removal was negligible. The treatment removed Ba, Ca, Cu, Mn, Mo, Ni, Pb, Tl, Sb, Se, Sr, and Zn of the studied 35 trace and other elements. The sequential extraction of the reactor sludge at the end of runs confirmed that with a few exceptions (Ba, Ca, and Cu) the main mechanism by which the elements were removed was precipitation as sulphides.

yearjournalcountryeditionlanguage
2007-02-01Water Research
https://doi.org/10.1016/j.watres.2006.11.036