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

Transformation of the heating sector is recognized as being essential for ensuring reliable and affordable energy services provided with reduced consumption sources diminished impact on environment less import dependency. The possibility utilizing that otherwise would be wasted needs to considered treated a big advantage district systems. Despite many advantages, sewage wastewater heat still mostly unused resource at global level totally source in Serbia, while data about potential this are lacking. This research proposes methodology determination technical waste from treatment facilities use systems by pump application. Data existing used providing replication cities without plants but An estimation recoverable evaluation some effects could obtained through its full utilization production Three groups indicators selected analysis focusing systems' performance (primary factor, specific per degree day area), security supply (import dependency, Shannon–Wiener diversification index, share renewables) environmental (carbon dioxide emission coefficient). Values determined current state possible future achieved after potential. proposed applied case study. It has been shown all analyzed projected have more preferable values compared correspond renewable should provide primary savings 5% year, reduction carbon 6.5% dependency DH 9.8% improved 21%.