Agenda Packets - 1982/12/06 - Laserfiche WebLink

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r -3- - What facilities does Minnesota need? Most facilities to manage waste oils and greases are in place. There could be some interest in a oil rerefinery utilizing up-to-date technology. Transfer stations wou a useful regional or central collection sites. 4) PAINT AND ORGANIC RESIDUES, ORGANIC SLUDGES AND STILL BOTTOMS (NO OIL), and ORGANIC AND OILY RESIDUES. These are the major groupings of organic wastes other than lube oils), and they have been aggregated here because these wastes can be managed in similar ways. These diverse wastes are generated by industries which recycle their own solvents on -site or by commercial solvent redistillers, industries which manufacture products requiring painting or gluing, chemical manufacturers, and refineries. - What are these wastes? They include still bottoms (the residue remaining after solvents are purified by distillation), paint spray booth residues, some refinery wastes, industrial wastewater treatment sludges, adhesives, and miscellaneous by-products of chemical manufacturing. - Why are they hazardous? Depending on the individual waste, these materials may be flammable or toxic. Some organic compounds are themselves quite toxic; these compounds, fortunately, do not make ' up a signficant portion of the state's wastes. However, many organic wastes, such as paint wastes or refinery wastes, contain toxic metals. How should they be handled? Most of these materials are not recoverab a for rl — ease, However, nearly all organic wastes can be effectively destroyed through incineration, Certain selected wastes can be solidified for landfill or landfarmed, - What facilities does Minnesota need? A signficant portion of the wastes generated in Minnesota should be destroyed through incineration. However, a hazardous waste incinerator often represents a very large investment ($10 - 20 million), and economies of scale dictate that units capable of burning relatively large volumes of waste be constructed. Minnesota probably doesn't produce the volumes of waste necessary to supply a high cost rotary kiln incinerator, so for the near future a transfer station to aggregate wastes for shipments to incineration facilities ies in the upper Midwest is most likely. Small, more specialized types of incinerators could conceivably be developed if there is a need for a specific kind of unit. In addition, recent developments in the field of wet air oxidation may lead to development of facilities which don't require large inputs of waste to operate economically (wet air oxidation is a variation of incineration which does not require extremely high temperatures to achieve destruction of wastes). (over)