Enhanced Mercury Oxidation

摘要

In March 2005, the U.S. Environmental Protection Agency (EPA) announced two rules for air pollution that apply to coal-fired power plants: the Clean Air Interstate Rule (CAIR) and the Clean Air Mercury Rule (CAMR). CAIR applies to states in which EPA atmospheric chemistry and transport models have demonstrated that nitrogen oxides (NO_X) and sulfur oxides (SO_X) emissions contribute to high levels of ambient O_3 and PM_(2.5). CAMR separately addressed the reduction of mercury (Hg) emissions from U.S. power plants. Although the CAMR was eventually vacated, mercury reductions are now being initiated on a state by state basis. Mercury emission reductions up to 90 percent are being required.