Abstract
In this study, we performed analysis to identify the effective method for suppression of Green House Gasses(GHGs) emissions from the public swage treatement plants. In particular, according to the IPCC guidelines, GHG emissions from public sewage treatment plants were calculated by dividing them by size and construction method. Among the methods investigated, the standard activated sludge method and the MEDIA method generated the least amount of greenhouse gas 0.000267 kgCO<sub>2</sub>-eq/㎥ and 0.000327 kgCO<sub>2</sub>-eq/㎥ respectively in the sewage treatment plant size of 10,000 ㎥ to 50,000 ㎥. On the other hand, the A<sub>2</sub>O and SBR methods generated the most greenhouse gas emissions at 50,000 ㎥~100,000 ㎥ of sewage treatment plants, respectively, with 254 kgCO<sub>2</sub>-eq/㎥ and 248 kgCO<sub>2</sub>-eq/㎥. In addition, we verify the BOD load was the largest influencing factor on the quantity of generated greenhouse gas at the sewage treatment plants, and the factor is followed by the facility capacity, the inflow flow and T-N load, and the power consumption.
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