Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability


Рад у часопису
Верзија рада
објављена верзија
Marija Živković, Dejan Ivezić
Clean Technologies and Environmental Policy
Springer Science and Business Media LLC
Датум издавања
Transformation of the heating sector is recognized as being essential for ensuring reliable and afordable energy services provided with reduced consumption of energy sources and diminished impact on the environment and less import dependency. The possibility of utilizing energy sources that otherwise would be wasted needs to be considered and treated as a big advantage of district heating systems. Despite many advantages, sewage wastewater heat is still a mostly unused resource at the global level and a totally unused energy source in Serbia, while data about the potential of this energy source are lacking. This research proposes a methodology for the determination of the technical potential of waste heat from wastewater treatment facilities for use in district heating systems by heat pump application. Data from existing wastewater treatment facilities are used for providing data for replication in cities without wastewater treatment plants but with district heating systems. An estimation of the recoverable heat energy potential of wastewater is used for evaluation of some efects that could be obtained through its full utilization for heat production in the existing district heating systems. Three groups of indicators are selected for analysis focusing on district heating systems’ energy performance (primary energy factor, specifc heat consumption per degree day and heating area), the security of energy supply (import dependency, Shannon–Wiener diversifcation index, the share of renewables) and environmental impact (carbon dioxide emission coefcient). Values of the selected indicators are determined for the current state of district heating systems and for the possible future state that could be achieved after full utilization of sewage wastewater potential. The proposed methodology is applied to Serbia, as a case study. It has been shown that all analyzed indicators for the projected future would have more preferable values compared to the values that correspond to the current state of the district heating systems. The use of this renewable energy source should provide primary energy savings of 5% per year, reduction of carbon dioxide emission of 6.5% per year, reduction of import dependency of DH systems of 9.8% and improved diversifcation of energy sources of 21%.
рекуперација топлоте из отпадних вода, систем даљинског грејања, топлотне пумпе, енергетске уштеде, емисија угљендиоксида, енергетска безбедност, Србија
Sewage wastewater heat recovery, District heating systems, Heat pumps, Energy savings, Carbon dioxide emission, Energy security, Serbia
Шира категорија рада
Ужа категорија рада
Отворени приступ
Creative Commons – Attribution-NonComercial-Share Alike 4.0 International

Marija Živković, Dejan Ivezić. "Utilizing sewage wastewater heat in district heating systems in Serbia: effects on sustainability" in Clean Technologies and Environmental Policy, Springer Science and Business Media LLC (2021). https://doi.org/10.1007/s10098-021-02063-6

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