Method for heavy metal stabilization and cementious agglomeration of flyash and scrubber residues
OwnerKeith Forresterinventor
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Abstract
This invention provides a method for stabilization of flyash and scrubber residues subject to acid and water leaching tests or leach conditions by addition of stabilizing agents and agglomeration effort, such that leaching of lead and regulated heavy metals are inhibited to desired levels. The resultant waste after stabilization and compaction is suitable for disposal as RCRA non-hazardous waste.
Claims15
A method of reducing the solubility of lead and heavy metal bearing flyash and scrubber residue mixtures, comprising contacting flyash and scrubber residue mixture with at least one stabilizing agent and one agglomeration device in an amount effective in reducing the leaching of lead and regulated heavy metals from the flyash and scrubber residue mixture to a level no more than non-hazardous levels as determined in an EPA TCLP test, performed on the stabilized material or waste, as set forth in the Federal Register, vol. 55, no. 126, pp. 26985-26998 (Jun. 29, 1990).
A method of reducing the solubility of lead and heavy metal bearing scrubber residue, comprising contacting scrubber residue with at least one stabilizing agent and one agglomeration unit in an amount effective in reducing the leaching of lead and heavy metals from the scrubber residue mixture to a level no more than non-hazardous levels as determined in an EPA TCLP test, performed on the stabilized material or waste, as set forth in the Federal Register, vol. 55, no. 126, pp. 26985-26998 (Jun. 29, 1990).
A method of reducing the solubility of lead and heavy metal bearing flyash, comprising contacting flyash with at least one stabilizing agent and one agglomeration effort in an amount effective in reducing the leaching of lead and heavy metals from the flyash to a level no more than non-hazardous levels as determined in an EPA TCLP test, performed on the stabilized ash, as set forth in the Federal Register, vol. 55, no. 126, pp. 26985-26998 (Jun. 29, 1990).
Dependencies are inferred from the claim text.