A Study On The Mercury Emission Characteristic And Comparison Tests For Applicability Of Latest Mercury Measuring Methods - Focus On The Cement Kiln -

Recently, there has been growing interest in the emission characteristics and behavior of anthropogenic mercury compounds from emission sources. It is required to establish a standard for reliable mercury measurement method. Therefore, this study has evaluated the applicability of the new measurement method; Continuous Emission Monitoring (US EPA 30A, CEM). In addition, the reliability evaluation was conducted through Ontario Hydro Method (ASTM D6784, OHM) and Sorbent trap method (US EPA Method 30B). As a monitoring result for three months via CEM from cement kiln, the maximum mercury compounds concentration was about 600 mu g/Sm-3. This is because of the various of raw materials and fuel, and the absence of mercury-control device. The mercury compounds concentrations of OHM, Sorbent trap and CEM were 13.64 (3.33 similar to 32.41) mu g/Sm-3, 13.94 (5.97 similar to 23.44) mu g/Sm-3 and 14.68 (6.19 similar to 26.75) mu g/Sm-3, respectively. The relative standard deviations (% RSD) of the three methods were 5.1 similar to 40.9%. The result of this study suggest that it is possible to apply the CEM in the cement kiln when, QA/QC such as calibration is verified.