Field evaluation of hazardous waste pretreatment as an air pollution control technique.

Three types of commonly used commercial treatment processes were investigated for the removal of volatile organic compounds (VOCs) from hazardous waste: thin-film evaporation, steam stripping, and distillation. These Unit operations were evaluated for their potential to control emissions from hazardous waste treatment, storage and disposal facilities (TSDFs) by reducing waste VOC content. One-day visits were conducted at three sites which operate thin-flm evaporators to gather data on the types of waste that can be treated, the treatment costs, and the major emission points. Steam stripping and distillation of six different wastes were evaluated during 3-4 day site visits to two recycling fums. Data collected on these two processes permitted calculation of Unit cost-effectiveness and determination of compoundspec& stripping rate constants for each batch. Air emission factors were also estimated for these two processes.