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Effects on Speciation of Ni & Cd in Sewage Sludge during Composting only and Co-Composting with Fly Ash Added

Autor(en):



Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: 2012 International Conference on Civil, Architectural and Hydraulic Engineering (ICCAHE 2012), August 10-12th 2012, Zhangjiajie (China)
Veröffentlicht in:
Seite(n): 1245-1252
DOI: 10.4028/www.scientific.net/AMM.209-211.1245
Abstrakt:

The land use has become the international mainstream and the favorable direction to dispose the municipal sewage sludge in recent years. The heavy metals, however, are the major barrier that limit the land utilization. Batch aerobic composting experiments were conducted to investigate the effect of composting and co-composting with fly ash on the shape of the heavy metals (Ni & Cd) in sludge by using the sawdust to regulate the C/N ratio. Results have shown that co-composting with fly ash can significantly change Ni & Cd species distribution, leading unstable state content of Ni lower than composting only. However, the result is not as good as composting only in terms of Cd. At the same time the fly ash dosage equaling 14% of the dry sludge mass was the optimized quantity to guarantee the lowest exchangeable fraction amount of the two heavy metals.

Structurae kann Ihnen derzeit diese Veröffentlichung nicht im Volltext zur Verfügung stellen. Der Volltext ist beim Verlag erhältlich über die DOI: 10.4028/www.scientific.net/AMM.209-211.1245.
  • Über diese
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  • Reference-ID
    10327216
  • Veröffentlicht am:
    24.07.2019
  • Geändert am:
    24.07.2019
 
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