Life Cycle Assessments for Wastewater Treatment and the Feasibility Study of Microbial Fuel Cell Technology Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/sn00b209q

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  • The thesis documents research about combining the National Pollutant Discharge Elimination System (NPDES) Permit Program with the Impact 2002+ methodology to conduct a Life Cycle Assessment (LCA) for wastewater treatment processes. The LCA for the operational phase of a local wastewater treatment plant was performed and the environmental impacts caused by wastewater treatment processes were quantified. The results suggest that the base-neutral compounds released from wastewater treatment processes had the most negative influence on human health and heavy metals mainly affected the aquatic ecosystem. The aquatic eutrophication caused by COD was over 7 times higher than ammonia. With respect to global warming effect, the carbon dioxide released from wastewater treatment processes was 2.22 times higher than the methane gas released from the anaerobic digester. In addition to the LCA of current wastewater treatment processes, the feasibility of using Cloth Electrode Assembly Microbial Fuel Cell (CEA-MFC) technology to replace Activated Sludge technology was explored through comparing the capital and operational costs of the two systems. The results suggest that the CEA-MFC system is a promising technology which can significantly reduce the energy consumption in the conventional wastewater treatment plants.
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  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2016-04-13T16:29:16Z (GMT) No. of bitstreams: 1 KU-HUAN's Thesis.pdf: 1669902 bytes, checksum: db2cfe8e72d6eb3045803c1b3f0a3d46 (MD5)
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