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標題: | 沉積物微生物燃料電池應用於養豬廢水厭氧消化之研究 Study of Sediment Microbial Fuel Cells (SMFCs) on Anaerobic Digestion of Piggery Wastewater |
作者: | Yen-Tsun Huang 黃彥尊 |
指導教授: | 蘇忠楨(Jung-Jeng Su) |
關鍵字: | 厭氧消化,沉積物微生物燃料電池,沼氣,微電力,再生能源, anaerobic digestion,sediment microbial fuel cell,biogas,micro- electricity,renewable energy, |
出版年 : | 2020 |
學位: | 碩士 |
摘要: | 廢(污)水需經過妥善處理,且符合環保署放流水標準才能排放至表面水體,將沉積物微生物燃料電池(Sediment Microbial Fuel Cell, SMFC)應用於廢水處理程序,在常溫常壓下利用陽極槽內進行厭氧消化程序,污泥微生物將廢水中有機質降解,同時產生沼氣與微電流。本研究目的主要是探討沉積物微生物燃料電池應用於養豬廢水處理時,陰極槽內水量與燃料電池之電流、電壓間之交互關係;其次在處理程序中,陽極槽與陰極槽間之接觸面積與燃料電池之電流、電壓間之交互關係,同時檢測與分析其產氣量與甲烷濃度,養豬廢水於處理前、後之水質指標變化,建立相關之最適操作參數,以利未來在廢水處理場上之應用。針對陰極槽內水量與燃料電池產電之交互關係試驗,當陽極槽的養豬廢水容積為4 L時,分別使用不同的陰極槽清水與陽極槽養豬廢水之容積比(陰極:陽極 = 0.625: 1、0.25: 1及0.0625 :1)進行研究試驗。有關陽極槽與陰極槽間之接觸面積與燃料電池產電之交互關係試驗,其中槽體底部表面積為0.0314 m2,分別使用不同通透膜表面積(4.52 cm2、3.39 cm2及1.13 cm2) 進行研究試驗。所使用之燃料電池反應槽接連線上即時記錄器,連續紀錄電流與電壓數據。試驗結果顯示,當養豬廢水容積為4 L,且兩槽容積比為0.0625 :1時,其平均總產氣量5546 mL,顯著高於其他兩組,此燃料電池平均電容功率密度為0.538 W/m2,也是顯著高於其他兩組。廢水之化學需氧量(COD)、生化需氧量(BOD)及懸浮固體(SS)之平均去除率分別為60 %、70 %及85 %。當過濾膜表面積為3.39 cm2與4.52 cm2時,此燃料電池平均電容功率密度為0.495~0.538 W/m2,為三組中最高。然而,當濾膜表面積為1.13 cm2時,此燃料電池平均電容功率密度為0.055 W/m2,三組中最低,但是平均總產氣量12370 mL,為三組中最高。本試驗的陰陽極槽體積為4 L,較其他研究文獻的燃料電池體積大,故本研究成果若能結合現場廢水處理系統的厭氣槽設施,則可增加畜牧廢水處理的經濟效益。達到廢水處理、沼氣生產及微電力回收利用的三贏目標。 The wastewater (or sewage) needs to be properly treated and meets the EPA’s effluent standard before it can be discharged to the surface water body. The sediment microbial fuel cell (SMFC) can be applied to the wastewater treatment process under normal temperature and pressure conditions. The anaerobic digestion is carried out in the anode chamber while the sludge microorganisms degrade the organic matter in the wastewater to produce biogas and micro-electricity simultaneously. The objective of this study was primarily to explore the interaction between the amount of tap water in the cathode chamber and the micro-electricity generation of the microbial fuel cell with piggery wastewater. Secondly, the relationship between the permeable membrane surface areas of the anode chamber and the cathode chamber and the micro-electricity generation of the microbial fuel cell. Moreover, the amount of accumulated biogas production and methane contents were also determined at the same time as well as the water quality of piggery wastewater before and after the time-course experiments to establish the optimal operation parameters for further in situ applications. The operation volume of the anode chamber was 4 L. For the time-course experiments according to the different volumes of tap water in the cathode chamber of the SMFC, different ratios of tap water of the cathode chamber and piggery wastewater of the anode chamber were used, i.e. cathode: anode (v/v) = 0.625: 1, 0.25: 1 and 0.0625: 1. The bottom area of the cathode chamber was 0.0314 m2. For the time-course experiments according to the different permeable membrane surface areas between the cathode and anode chambers of the SMFC, different permeable membrane surface areas were used, i.e. 4.52 cm2, 3.39 cm2, and 1.13 cm2. All the SMFCs were connected to the real-time recording module for continuously recording the current and voltage data. The results showed that when the ratio of tap water and piggery wastewater was 0.0625:1, the total biogas production (5546 mL) and power density of the SMFC (0.538 W/m2) were significantly higher than the other groups and the average removal of chemical oxygen demand (COD), biochemical oxygen demand (BOD), and suspended solids (SS) was 60%, 70%, and 85%, respectively. When the permeable surface area was 3.39 cm2 and 4.52 cm2, the SMFC achieved the highest average power density of 0.495~0.538 W/m2. The SMFC achieved the highest average accumulated biogas production of 12370 mL, but the lowest power density of the SMFC (0.055 W/m2) when the permeable membrane surface area was 1.13 cm2. The scale of the SMFC of this study was 4 L, which is larger than the scale of the other studies. Thus, if the SMFC can be integrated with an in-situ piggery wastewater treatment system, the economic efficiency of the piggery wastewater treatment can be increased as well as a win-win-win goal of wastewater treatment, biogas production, and micro-electricity recycling can be achieved. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/57761 |
DOI: | 10.6342/NTU202001590 |
全文授權: | 有償授權 |
顯示於系所單位: | 動物科學技術學系 |
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