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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/29157

    標題: 利用傾斜板沉澱控制沉澱式薄膜生物反應槽之薄膜積垢
    Membrane Fouling Control in Submerged Membrane Bioreactor by Using Inclined Plate Settler
    作者: Wasu Rattananurak
    貢獻者: 環境工程與科學系
    關鍵字: 生物薄膜反應器積垢
    Inclined Plate Settler
    日期: 2014
    上傳時間: 2015-10-26 20:25:23 (UTC+8)
    摘要: 薄膜分離技術已被廣泛應用於水和廢水處理,特別是在水回收和循環再利用。然而,膜結垢降低了膜的效率,並增加了處理的成本,因此限制了薄膜分離技術應用。薄膜生物反應器(MBR)可分為兩種類型,沉浸式(iMBR)和側流式(sMBR)。然而,這兩種類型的膜生物反應器的薄膜表面始終直接暴露於高濃度的懸浮固體而且容易結垢。本研究設計新型膜生物反應器是以減輕薄膜污垢。安裝傾斜板在iMBR中,可以減少薄膜表面直接接觸高濃度SS,以降低膜污結垢速率。在本研究中使用的新型iMBR有曝氣區、沉降區和過濾區組合而成。實驗使用0.06μm的孔徑的薄膜,結果顯示該新型iMBR比傳統式iMBR可以減少過濾區中的SS濃度高達98.6%,提高滲透液量達51.13%。在實驗中對出水水質的COD和TOC的分析,新型IMBR的去除率結果顯示COD和TOC分別高達96.9%和96.8%。
    Membrane separation technology has been widely applied in water and wastewater treatment, especially in the water reclamation and recycling. However, the membrane fouling decreases the membrane efficiency and increases the cost of the process; thus limited the membrane application. There are two types of Membrane Bio-Reactor (MBR), immersed (iMBR) and side streamed (sMBR). However, the membranes surfaces of these two types MBR are always directly exposed to high concentration of suspended solid and easily to get fouling. A novel MBR was designed to reduce membrane fouling. The inclined plate setup in iMBR can separate high SS from direct contact with the membrane surface and decrease membrane fouling rate as expected. The novel iMBR used in this study consists of aeration zone, settling zone, and filtration zone. The reactor operated under the upflow mode of operation with 0.06?m membrane pore size. The results show that the novel iMBR can reduce the SS concentration in the filtration zone up to 98.6% and increase the permeate flux over 51.13% than that of normal conventional iMBR. For the effluent quality the COD and TOC were also measured in the experiments and the results show that removal efficiency of COD and TOC in novel iMBR can reach 96.9% and 96.8% respectively.
    關聯: 網際網路公開:2016-01-07,學年度:102,61頁
    Appears in Collections:[環境工程與科學系(所)] 博碩士論文

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