Analysis of the Effect of Sludge Reduction and Energy Production from Introducing Anaerobic Digest Plant into a Sewage Treatment Plant

As the amount of sewage sludge (SS) is increasing worldwide, anaerobic digesters (ADP) are being distributed to reduce it and treat in an environmentally friendly way. In Korea, 20 years have passed since introduction ADP, but number treatment plants (STP) installed with ADP only about 10% total STP. Accordingly, problems improvements were examined through material flow analysis targeting STP, effect introducing digestion (AD) was analyzed as a way solve them. result analysis, SS generated by STP (SS-ADP + Co-ADP) operated AD 0.54 kg/m3, facility without 0.77 showing reduction 31%. The that used SS-AD found be reduced 21–24% TOE (Ton Of Equivalent))/day, which has reducing 794,867 kg-CO2/day greenhouse gas. terms energy efficiency, Co-AD 86% higher than SS-AD, biogas production yield 90% SS-AD. Therefore, necessary introduce into SS, production, gas reduction.