Development of Energy-Saving Water Purification Systems Using Hollow-Fiber Membrane

中空纤维膜节能净水系统的开发

• 批准号: 05555152
• 负责人: FUJITA Kenji
• 金额: $ 4.99万
• 依托单位: UNIVERSITY OF TOKYO
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555152/
• 关键词: Hollow-Fiber Membrane; Water Purification; Membrane Separation; Ultra-Filtration; Micro-Filtration; Bacteria Removal; Virus Removal; Energy Saving; ウィルス限去; ウィルス除去

As the results of a study on development of energy-saving water purification systems using hollow-fiber membrane, the following conclusions were obtained.(1) Design and Applicability of Membrane Separation ProcessBased on evaluations of pore-size and cleaning methods of hollow-fiber membrane, the best results were achieved when membranes having a pore size of 0.1mum are used and membrane cleaning by air-scrubbing was employed.(2) Study on Membrane FoulingBecause membrane-fouling was suppressed either by pre-ozonation or by pre-UV irradiation, it was found that bacteria present in raw water had affected on membrane-fouling. Based on this finding, UV irradiation was employed just before membrane separation, and, as a result, the time interval between each chemical cleaning was prolonged from 1 to 2 months to about 6 months.(3) Removal of Coliform Group and VirusesAccording to membrane separation experiment with coliphages, removal of coliphages by hollow-fiber microfilter was controlled by adhesion of coliphages to membrane and by membrane clogging. Due to these effects, coliphages smaller than nominal pore sizes could be removed at a high percentage.

作为开发使用中空纤维膜的节能水净化系统的研究结果，获得了以下结论。(1)膜分离工艺的设计与适用性通过对中空纤维膜的孔径大小和清洗方法的评价，确定了使用孔径为0.1 μ m的膜和采用空气洗涤的膜清洗方法时，效果最好。(2)膜污染研究由于预臭氧化或预紫外线照射均可抑制膜污染，因此发现原水中存在的细菌对膜污染有影响。基于这一发现，在膜分离之前进行UV照射，结果，每次化学清洗之间的时间间隔从1至2个月延长至约6个月。(3)大肠菌群和病毒的去除根据大肠杆菌的膜分离实验，中空纤维微滤膜对大肠杆菌的去除受大肠杆菌对膜的粘附和膜堵塞的控制。由于这些效应，小于标称孔径的大肠杆菌可以以高百分比被去除。

项目成果

藤田賢二,滝沢 智: "中空糸膜における逆洗浄と空気泡揺動洗浄の水理学的考察" 水道協会雑誌. 63. 94-101 (1994)

Kenji Fujita、Satoshi Takizawa：“中空纤维膜反冲洗和气泡振荡清洁的水力考虑”日本水道协会杂志 63. 94-101 (1994)。

Y.Kaiya,K.Fujita et al.: "Study on Fouling Materials in Membrane Treatment Process For Potable Purpose" Proceedings of International Specialist Conference on “Desalination and Water Reuse". 109-118 (1994)

Y.Kaiya、K.Fujita 等人：“饮用水膜处理过程中结垢材料的研究”“海水淡化和水回用”国际专家会议记录 109-118 (1994)。

高橋克夫,藤田賢二 他: "中空糸精密ろ過膜による大腸菌ファージ及び従属栄養細菌の除去特性" 水道協会雑誌. 63. 51-61 (1994)

Katsuo Takahashi、Kenji Fujita 等：“中空纤维微滤膜去除大肠杆菌噬菌体和异养细菌的特性”日本自来水协会杂志 63. 51-61 (1994)。

藤田賢二,滝沢 智: "外圧式中空糸膜における目づまり過程のシミュレーションと操作方法の評価" 水道協会雑誌. (掲載予定).

藤田健二、泷泽聪：《外压式中空纤维膜堵塞过程的模拟及操作方法的评价》日本水道协会杂志（待出版）。

S.Takizawa, K.Fujita, et al.: "Membrane-Fouling Control by Ozone-Scrubbing" Ozone World Congress. 12 (in print).

S.Takizawa、K.Fujita 等人：“通过臭氧洗涤控制膜污染”臭氧世界大会。