Enhancing the Energy Efficiency of Wastewater Treatment Plants through Co-digestion and Fuel Cell Systems

摘要: The present work provides an overview of technological measures to increase the self-sufficiency wastewater treatment plants (WWTPs), in particular for largely diffused activated sludge-based WWTP. operation WWTPs requires a large amount electricity. Thermal energy is also required heating sludge and sometimes exsiccation digested sludge. On other hand, entering organic matter contained source energy. Organic recovered as sludge, which stirred tanks (anaerobic digester) produce biogas. onsite availability biogas represents great opportunity cover significant share WWTP electricity thermal demands. Especially, can be efficiently converted into (and heat) via high temperature fuel cell generators. final part this will report case study based on use sewage solid oxide cell. However, efficient conversion combined heat power (CHP) devices not sufficient. Self-sufficiency combination conversion, maximization yield from substrate, minimization duty connected preheating feeding anaerobic digester (generally achieved with pre-thickeners). Finally, co-digestion fraction municipal waste (OFMSW) digesters treating represent additional increasing production existing WWTPs, thus helping transition toward self-sufficient plants.