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WOOD PRESERVING INDUSTRY MULTIMEDIA EMISSION INVENTORY
Citation:
DaRos, B., B. Fitch, C. Franklin, M. Friedman, AND R. Merrill. WOOD PRESERVING INDUSTRY MULTIMEDIA EMISSION INVENTORY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-81/066 (NTIS PB81205999), 1981.
Description:
Restriction of the discharge of wastewater generated during the preservation of wood has resulted in the increased use of evaporation techniques by the wood preserving industry. This report discusses emissions that may occur during evaporation and projects the pollutant burden on the environment. The information presented includes a description of the wood preserving industry, its products, the regulations impacting its emissions, and the nature of its emissions. The application of preservatives is discussed in detail and includes discussions of the waste streams generated during the treatment process. Disposal of the generated wastewater is the primary topic of discussion, supported by laboratory and field sampling data. The measured emissions are compared to evaporation models, followed by an industrywide projection of the emission of organics if evaporation is used for the disposal of wastewater. The impact of regulations on future emission rates is also projected. The primary conclusions of this work are that organic compounds are emitted to the atmosphere during evaporation. The rate of release is based on the type of evaporation system used: solar ponds, thermal (pan) evaporators, spray ponds or cooling towers; the temperature (thermal) driving force used; the molecular weight and volatility of the substances; and the concentration of each component in solution following wastewater pretreatment.