The Control Strategy and Emission Investigation for Dioxins and Heavy Metals from Stationary Sources
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The scope of this project includes: 1) Monitoring of stationary emissions and the ambient environment; 2) Establishing and updating of the emission inventory; 3) Planning and reviewing of dioxins and heavy metal emission reduction strategies.
1) Monitoring for the stationary emission and the ambient environment
This year the dioxin emission monitoring was done on small coal-fired boilers. The average dioxin concentration was 0.003 ng I-TEQ/Nm3, complying with the emission standard of 1.0 ng I-TEQ/Nm3.
Heavy metal and particulate matter emission monitoring were also completed on sintering plants. These results can be used as emission factors for estimating dioxin and heavy metals emission inventory.
This year the ambient dioxin monitoring was targeted on the general monitoring stations. The monitored concentrations of dioxin in March, May, August, and October, 2016, were 0.031 pg I-TEQ/m3 (0.027 pg WHO2005DF-TEQ/m3), 0.025 pg I-TEQ/m3 (0.022 pg WHO2005DF-TEQ/m3), 0.020 pg I-TEQ/m3 (0.017 pg WHO2005DF-TEQ/m3) and 0.047 pg I-TEQ/m3 (0.041 pg WHO2005DF- TEQ/m3), respectively. The monitored concentration of dioxin-like PCBs in March, May, August, and October, 2016, were 0.002 pg WHO2005-TEQ/m3, 0.003 pg WHO2005-TEQ/m3, 0.002 pg WHO2005- TEQ/m3, 0.003 pg WHO2005-TEQ/m3. Other than October, the monitoring results were lower than past few years
The monitoring of ambient heavy metal showed that the average concentrations of lead, cadmium, nickel and selenium are all under the ambient
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Keyword |
emission inventory, heavy metal, dioxin, environmental monitoring
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