To mitigate carbon emissions, the government aims to transition to renewable energy sources including hydrothermal energy, specifically through wastewater heat recovery. This process involves extracting heat from wastewater or treated water. However, assessments of demand sources for local cooling and heating have predominantly focused on the proximity of nearby facilities, without conducting comprehensive demand analyses or defining explicit supply areas. This study proposes a methodology for prioritizing suitable wastewater treatment plants (WWTPs) for the implementation and expansion of renewable energy. The methodology is based on the gross floor area of potential wastewater heat demand surrounding WWTPs. Initially, potential supply and demand sources were identified based on the capacity of WWTPs and the gross floor area of buildings capable of utilizing wastewater heat. In the Republic of Korea, 330 WWTPs with a capacity of 5,000 m3/day or more have been recognized as demand sources for wastewater heat recovery. The provision of treated wastewater to structures located within a 500 m radius of the WWTPs for heat recovery is considered a feasible option. The potential wastewater heat demand and renewable energy cluster were identified among the surrounding buildings and complexes A total of 13 potential supplies were identified, provided that the gross floor exceeded 60,000 m². Finally, after prioritizing based on WWTPs with these conditions, the underground plant located in the downtown area was ranked as the highest priority. If further analysis of economic feasibility, CO2 reduction, and energy efficiency are conducted, this approach can be expanded and applied within the framework the Water-Energy Nexus. Wastewater heat can be utilized not only as a renewable energy source but also as a means to enhance wastewater reuse through the supply of treated wastewater.

ABSTRACT
1. 서 론
2. 연구방법
    2.1 잠재적 하수열에너지 공급 대상지역 선정 방법
    2.2 잠재적 하수열에너지 공급처 및 수요처 선정 방법
    2.3 우선순위 결정을 통한 하수열에너지 공급 대상지선정 방법
3. 결 과
    3.1 대상지역
    3.2 잠재적 하수열에너지 공급 대상지역 선정결과
    3.3 잠재적 하수열에너지 공급처 및 수요처 선정결과
    3.4. 우선순위 결정을 통한 하수열에너지 공급 대상지선정결과
    3.5. 하수열에너지 도입을 위한 추가적 고려사항
4. 결 론
사 사
References

• 박기홍(고려대학교 건축사회환경공학부) | Kihong Park (School of Civil, Environmental and Architectural Engineering, Korea University)
• 전창현(고려대학교 건축사회환경공학부) | Changhyun Jun (School of Civil, Environmental and Architectural Engineering, Korea University)
• 오재일(중앙대학교 사회기반시스템공학부) | Jeill Oh (School of Civil and Environmental Engineering, Chung-Ang University) Corresponding author