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Seasonal variation in membrane fouling in membrane bioreactors (MBRs) treating municipal wastewater

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タイトル: Seasonal variation in membrane fouling in membrane bioreactors (MBRs) treating municipal wastewater
著者: Miyoshi, Taro 著作を一覧する
Tsuyuhara, Tomoo 著作を一覧する
Ogyu, Rie 著作を一覧する
Kimura, Katsuki 著作を一覧する
Watanabe, Yoshimasa 著作を一覧する
キーワード: Membrane bioreactor
Membrane fouling
Seasonal variation
発行日: 2009年12月
出版者: Elsevier
誌名: Water Research
巻: 43
号: 20
開始ページ: 5109
終了ページ: 5118
出版社 DOI: 10.1016/j.watres.2009.08.035
抄録: We investigated seasonal variation in membrane fouling in membrane bioreactors (MBRs) treating municipal wastewater regarding the difference between physically reversible and irreversible fouling. Two separate MBRs with different solid retention times (SRTs) operated in parallel for about 200 days including high-and low-temperature periods to evaluate the effect of operating conditions on seasonal variation of membrane fouling. Seasonal variations of both types of membrane fouling (i.e., physically reversible and irreversible fouling) were observed for the MBR with short SRT (13 days). However, in the MBR with long SRT (50 days), there were no significant seasonal variations in both types of membrane fouling. In the MBR with short SRT, the trends in the seasonal variation in the development rates of physically reversible and irreversible fouling were different. Physically reversible fouling was more significant in the low-temperature period, while physically irreversible fouling developed more rapidly in the high-temperature period. The development rates of physically reversible fouling can be related to the concentration of dissolved organic matter in the mixed liquor suspension of MBRs; whereas those of physically irreversible fouling could not be explained by the concentration of dissolved organic matter. The characteristics of dissolved organic matter differed depending on the temperature period, and the trends of dissolved organic matter variation in mixed liquor were similar with those of foulants that caused physically irreversible fouling. The results obtained in this study indicated that seasonal variation in physically reversible and irreversible fouling is related to changes in quantity and quality of organic matter, respectively.
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/42720
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 三好 太郎

 

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