| Abstract |
| Greenhouse gases (GHGs) such as CH4 and N2O are directly emitted from sewage treatment plants, whereas CO2 is indirectly generated through electricity consumption. Globally, GHG emissions from sewage and waste treatment plants are estimated to account for 3-5% of total GHG emissions. The Energy Performance and Carbon Emissions Assessment and Monitoring (ECAM) tool is a modeling framework developed to estimate carbon emissions based on the calculation methods outlined in the IPCC guidelines. It is applicable to a wide range of estimation approaches,from basic calculations by unit of measure to methods incorporating actual measurement data. This study utilized the ECAM tool, based on IPCC guidelines, to assess carbon emissions from two domestic sewage treatment plants. According to ECAM, the "A" sewage treatment plant emitted 0.9667 kgCO2eq/m3, while the "B" sewage treatment plant emitted 1.1362 kgCO2eq/m3. The higher GHG emissions per treatment flow rate for the "B" sewage treatment plant were attributed to enhanced anaerobic degradation and elevated influent concentrations of COD and TN. Discrepancies were observed in CH4 generation influenced by BOD and underestimated N2O amounts compared to the National Greenhouse Gas Inventory Report of Korea. Electricity consumption accounted for approximately 50% of total emissions in both plants, prompting consideration of device replacement and increased utilization of new and renewable energy sources. |
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| Key Words |
| Anaerobic digestion, Carbon emissions, ECAM, Influent concentration Sewage treatment plants, 혐기성소화, 탄소배출, ECAM모델, 유입하수농도, 하수처리장 |
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