VOLATILE ORGAN1C CONTAMINANT EMISSIONS FROM WASTEWATER TREATMENT PLANTS DURING SECONDARY TREATMENT

摘要

Volatile organic contaminant (VOC) emissions from wastewater treatment plants may occur through a variety of mechanisms which mainly include volatilization, evaporation, biodegrada- tion, and photodecomposition. A mathematical model incorporating the significant factors affecting VOC emissions from a secondary treatment facilities has been developed and verified with the op- erational data from wastewater treatment plant in south Florida. The model includes mass transfer considerations for volatilization from clarifier surfaces and weirs, in addition to volatilization from aeration basins. A simple model such as this one can be a useful tool to estimate VOC emissions from municipa1 wastewater treatment plants and to evaluate the present and future state of compliance with applicable air quality standards.