PCB Management Technologies for Natural Gas Transmission and Distribution Systems. Topical Report, October 1989-March 1990

摘要

As part of a program to assist gas companies in selecting and implementing cost effective PCB management technologies, a review of available technologies for a variety of contamination scenarios in gas transmission and distribution was performed. Fluids containing PCBs were used as lubricants in gas and air compressor systems throughout the gas transmission and distribution industries. Treatment technologies for the potentially contaminated media (pipelines, condensate, soil, sludge, water, building, equipment, and tanks) include thermal treatment, chemical dechlorination, landfill, physical separation, and bioremediation. Pigging technology has been the traditional method for decontaminating pipeline, though solvent flushing and swabbing are available for precut pipeline sections. Pipeline PCB contaminated condensate is commonly incinerated, but chemical dechlorination is another option for treatment. PCB contaminated soils and sludges have been either disposed of through use of landfills or by thermal treatment. Several other technologies have been investigated and some are commercially available. PCB contaminated water is typically treated through commercial incineration or filtration/carbon absorption. Decontamination of equipment and buildings includes a varity of fundamental effective techniques. Relevant sampling and analysis techniques were also reviewed.