北海道大学 · 環境科学
Kimura教授の研究室では、膜汚染のメカニズム解明とその制御に焦点を当てた水処理技術の高度化を研究しています。特に膜バイオリアクター（MBR）における膜汚染の原因物質や操作条件（F/M比、泥齢など）の影響を実規模実験で解明しており、化学洗浄による再生可能性や、有機物の性質と膜の親和性の関係にも注力しています。持続可能な水処理プロセスの実現に向け、膜技術の信頼性と経済性を高める基盤技術の確立を目指しています。
Figures are computed from collected data and may differ slightly.
The main obstacle for wider use of membrane bioreactors (MBRs) for wastewater treatment is membrane fouling (i.e., deterioration of membrane permeability),which increases operating costs. For more efficient control of membrane fouling in MBRs, an understanding of the mechanisms of membrane fouling is important. However, there is a lack of information on membrane fouling in MBRs, especially information on features of components that are responsible for the fouling. We conducted a pilot-scale expe
The elimination of six acidic pharmaceuticals (clofibric acid, diclofenac, ibuprofen, ketoprofen, mefenamic acid, and naproxen) in a real wastewater treatment plant (WWTP) using an activated sludge system and membrane bioreactors (MBRs) was investigated by using a gas chromatography/mass spectrometry (GC/MS) system for measurement of the compounds. Limited information is available for some of the tested pharmaceuticals at present. Solid retention times (SRTs) of the WWTP and the two MBRs were 7,
Direct membrane filtration (DMF) of municipal wastewater using a microfiltration membrane was investigated to capture organic matter. In contrast to the expectation that membrane fouling cannot be controlled in DMF of domestic wastewater, it was possible to stably continue membrane filtration with relatively high membrane fluxes (∼20 LMH) for >200 h by applying chemically enhanced backwash (CEB), whereas approximately 75% of the organic matter in wastewater could be recovered. Off-line chemical
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