Document Detail


On-site treatment and landfilling of MSWI air pollution control residues.
MedLine Citation:
PMID:  12573829     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Air pollution control (APC) residues from municipal solid waste incineration (MSWI) are difficult to landfill due to substantial leaching of trace metals. An on-site pretreatment prior to landfilling of APC-residues was investigated in terms of bench-scale experiments with a semidry APC-residue and a fly ash. The treatment involved mixing of the residues with a ferrous sulphate solution and subsequent oxidation of the suspension. Afterwards, the suspension was spread on a dedicated landfill section and allowed to drain by gravity through the drainage system of the landfill. The wastewater from the process, collected through the drainage system, contained large concentrations of salts (Cl: 14-30 g/l, Na: 4-9 g/l, K: 5-11 g/l, Ca: 2-12 g/l) but low concentrations of trace metals (e.g. Pb: 14-100 microg/l, Cd: <2-7 microg/l). The treated residues left in the landfills were later subject to leaching by simulated rainfall. The leachate contained low concentrations of trace metals (Pb: <120 microg/l, Cd: <2 microg/l, Cr: <485 microg/l). The leachate concentrations from the treated APC-residues were substantially reduced compared to concentrations in leachate from untreated APC-residues. Particularly in the early stages of the leaching, concentrations of trace metals were reduced by up to four orders of magnitude.
Authors:
K Lundtorp; D L Jensen; M A Sørensen; H Mosbaek; T H Christensen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of hazardous materials     Volume:  97     ISSN:  0304-3894     ISO Abbreviation:  J. Hazard. Mater.     Publication Date:  2003 Feb 
Date Detail:
Created Date:  2003-02-07     Completed Date:  2003-05-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9422688     Medline TA:  J Hazard Mater     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  59-70     Citation Subset:  IM    
Affiliation:
Babcock & Wilcox Vølund Aps., Falkevej 2, 6705, Esbjerg, Denmark.
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MeSH Terms
Descriptor/Qualifier:
Air Pollution / prevention & control*
Facility Design and Construction
Ferrous Compounds / chemistry
Incineration
Metals, Heavy / analysis*
Refuse Disposal*
Soil Pollutants
Trace Elements / analysis
Chemical
Reg. No./Substance:
0/Ferrous Compounds; 0/Metals, Heavy; 0/Soil Pollutants; 0/Trace Elements; 7720-78-7/ferrous sulfate

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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