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Authors = Gamze Güngör-Demirci

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32 pages, 5327 KiB  
Article
Techno-Economic Assessment of CHP Systems in Wastewater Treatment Plants
by Derall M. Riley, Jiashen Tian, Gamze Güngör-Demirci, Patrick Phelan, J. Rene Villalobos and Ryan J. Milcarek
Environments 2020, 7(10), 74; https://doi.org/10.3390/environments7100074 - 26 Sep 2020
Cited by 58 | Viewed by 9886
Abstract
Wastewater treatment plant (WWTP) utilization of combined heat and power (CHP) systems allows for the efficient use of on-site biogas production, as well as increased annual savings in utility costs. In this paper, a review of biogas energy recovery options, CHP prime mover [...] Read more.
Wastewater treatment plant (WWTP) utilization of combined heat and power (CHP) systems allows for the efficient use of on-site biogas production, as well as increased annual savings in utility costs. In this paper, a review of biogas energy recovery options, CHP prime mover technologies, and the costs associated with biogas cleaning give a broad summary of the current state of CHP technology in WWTPs. Even though there are six different prime mover technologies, the main ones currently being implemented in WWTPs are micro turbines, fuel cells and reciprocating engines. Different prime movers offer varying efficiencies, installation costs, and biogas impurity (H2S, siloxanes, HCl) tolerances. To evaluate the long-term savings capabilities, a techno-economic assessment of a CHP installation at a case study WWTP shows the payback, annual savings, and initial costs associated with the installation of a CHP system. In this case, a study a payback of 5.7 years and a net present value of USD 709,000 can be achieved when the WWTP generates over 2,000,000 m3 of biogas per year and utilizes over 36,000 GJ of natural gas per year. Full article
(This article belongs to the Special Issue Pollution Prevention/Environmental Sustainability for Industry)
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