Before revision: Some of the emissions that may be treated biologically include: heterocyclic compounds (such as quinoline or pyridine); polyaromatic hydrocarbons (PAHs); pharmaceutical substances; polychlorinated biphenyls; radionuclides; hydrocarbons (oil); benzene, toluene, ethylbenzene, and xylene (BETEX); methyl ethyl ketone (MEK); some metals.
After revision: Some of the emissions that may be treated biologically include: heterocyclic compounds (such as quinoline or pyridine); polyaromatic hydrocarbons (PAHs); pharmaceutical substances; polychlorinated biphenyls; hydrocarbons (oil); benzene, toluene, ethylbenzene, and xylene (BETEX); methyl ethyl ketone (MEK); some metals.