Ash reuse: Case studies in landfill applications
- Malcolm Pirnie, Inc., White Plains, NY (United States)
In recent years, owners and operators of municipal waste combustors (MWCs), as well as federal and state regulatory agencies, have extended initiatives for the management of ash to identify, develop, and implement innovative techniques to improve existing ash management systems. With the advent of changing regulatory programs, technological advances, and improving economic scenarios, ash managers have begun to look beyond monofill or co-disposal landfilling for other viable management alternatives. Research projects and demonstrations programs have been completed to evaluate the feasibility of using ash in various applications both within and outside of the landfill environment. Although ash has consistently passed required waste characterization testing, managers of ash have turned to treatment technologies to reduce the potential of contaminant leaching--primarily lead and cadmium--as a means to protect against the potential liabilities generally associated with landfill disposal. Some of the ash treatment technologies used by ash generators to reduce contaminant leachability include adding Portland cement, phosphoric acid, and/or lime to the ash residues as part of the MWC process or at a separate processing plant. There are many vendors and processes to stabilize MWC ash available in the marketplace, and the treatment process best suited for a specific application should be determined on a case-by-case basis.
- OSTI ID:
- 287523
- Journal Information:
- Waste Age, Vol. 27, Issue 7; Other Information: PBD: Jul 1996
- Country of Publication:
- United States
- Language:
- English
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