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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/74755

    Title: 批次式好氧高壓造粒程序
    Other Titles: High pressure aerobic granulation sequential batch reactor (SBR) process
    Authors: 張原維;Chang, Yuan-Wei
    Contributors: 淡江大學水資源及環境工程學系碩士班
    李奇旺;Li, Chi-Wang
    Keywords: 好氧顆粒;高壓;造粒;絲狀菌;Aerobic granule;High pressure;Graulation;Filamentous Bacteria
    Date: 2011
    Issue Date: 2011-12-28 19:25:22 (UTC+8)
    Abstract: 好氧顆粒比起活性污泥的優點在於它的高沉降性、能抵抗較高負荷及變異的進流水濃度。影響好氧顆粒的因子有很多,包含沉澱時間、進流水性質、飢餓期、pH值、溫度、溶氧、絲狀菌等等,但好氧顆粒的常常因為不知名的原因而崩解隨出流水流出,學者認為的其中一項原因是氧氣無法進入顆粒內部而造成崩解。
    Compared with aerobic activated sludge process, aerobic granule process has several advantages, such as good settling ability, high biomass retention, strong microbial structure, resistance of high loadings and variation influent concentration. There are many factors affecting granule growth, including selection pressure, starvation time, pH value, temperature, dissolved oxygen, and filamentous fungi, etc. Aerobic granules might disintegrate and are washed out from the reactor with effluent. It has been attributed to the reason that oxygen cannot penetrate the granule core, causing anaerobic condition in the granule core. In this study, aerobic granules are operated under high pressure environment, i.e., high pressure granulation process, to overcome the aforementioned problem. High pressure granulation process along with ambient pressure process were studied under three organic loading conditions (5, 10, 20 kgCOD/m3-d). The characteristics of aerobic granules were compared.
    After a three-week granulation under three loading, the result shows that both reactors have few filamentous.But the filamentous bacteria in high pressure reactor are not only less than those in the ambient pressure reactor but also having better settling ability, resulting in less total suspended solids in the effluent of the high pressure reactor. Under the same organic loading, COD removal efficiencies are much better in the high pressure reactor than in the ambient pressure reactor. Regardless of the high pressure reactor and ambient pressure reactor, COD removal efficiencies under high loading are worse than those under medium and low loading. In addition, the amount of EPS is not affected by oxygen concentration, and is decided by the starvation time.
    Appears in Collections:[水資源及環境工程學系暨研究所] 學位論文

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