TREATMENT USING ACTIVATED CARBON

摘要

As many readers of this magazine would know, for about 50 years polychlorinated biphenyls (PCBs) were commonly used in industrial materials including, caulking, cutting oils, inks, paints and as dielectric fluids in electrical equipment such as transformers and capacitors. Concerns over health effects lead to a North American ban of manufacturing PCBs in 1977. By the mid 1980's an initiative was started to clean up contaminated areas and to phase out PCB containing equipment and products that were still in use. This cleanup effort continues today.