Development of nanofiltration technology as a tool for concentration and partitioning of organic matters and separation of micropollutants

开发纳滤技术作为有机物浓缩和分离以及微污染物分离的工具

• 批准号: 11555142
• 负责人: URASE Taro
• 金额: $ 1.79万
• 依托单位: TOKYO INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11555142/
• 关键词: Nanofiltration; Reverse osmosis; Landfill leachate; Endocrine disrupting chemicals; Drinking water treatment; Wastewater treatment

Rejection characteristics of nanofiltration and reverse osmosis membranes were investigated in the applications of drinking water treatment of surface and/or underground water and in the applications of leachate treatment. Molecular weight cutoff sizes of commercially available membranes were determined by alcohols and by sugars. Some membranes with relatively low nominal desalination ratio showed more than 90% rejection of natural organic matters in the measurement of TOC.There was less correlation between rejection of organic matters and rejection of salts. This type of insignificant correlation was found in the case not only of surface water treatment but of underground water treatment and of leachate treatment. Bis phenol A, which is thought to be one of the endocrine disrupting chemicals showed lower rejection than the predicted value from the molecular weight rejection relationship obtained from sugar rejection. One of the actual leachate treatment facilities using high rejection reverse osmosis treatment was focused for the rejection characteristics survey. Salt rejections, organic matters rejection and micropollutants rejections were measured in that actual plant. A suction nanofiltration system was investigated using an immersed flat sheet nanofiltration module. Salt rejections were analyzed by using the well known solution diffusion model and the Extended Nernst Planck equations. Sulfate rejection was lower than the predicted value of the Extended Nernst Planck equation. The concentration polarization in membrane separation was calculated to be negligible in the case of small flux operation of immersed nanofiltration. In the arsenic contained ground water treatment, an affinity term was identified in the Extended Nernst Planck equation. A nanofiltration device connected with bicycle type manual pump was developed for the treatment of arsenic contained ground water treatment in Bangladesh.

研究了纳滤膜和反渗透膜在饮用水处理地表水和/或地下水以及渗滤液处理中的应用。市售膜的分子量临界值由醇和糖决定。一些标称脱盐比较低的膜在TOC测量中对天然有机物的去除率达到90%以上。有机质的排异与盐类的排异之间的相关性较小。这种不显著的相关性不仅存在于地表水处理中，也存在于地下水处理和渗滤液处理中。双酚A被认为是内分泌干扰物之一，其排斥反应低于糖排斥反应的分子量关系预测值。针对某实际高截留反渗透渗滤液处理设施进行了截留特性调查。在该实际植物中测量了盐的拒斥、有机物的拒斥和微污染物的拒斥。采用浸没式平板纳滤模块对吸力纳滤系统进行了研究。利用众所周知的溶液扩散模型和扩展的能量-普朗克方程分析了盐的拒绝。硫酸盐截留量低于扩展能-普朗克方程的预测值。计算结果表明，在小通量浸没纳滤操作条件下，膜分离过程中的浓度极化可以忽略不计。在含砷地下水处理中，在扩展能普朗克方程中发现了一个亲和项。研制了一种与自行车式手动泵连接的纳滤装置，用于孟加拉国含砷地下水的处理。

项目成果

J.I.Oh, T.Urase, H.Kitawaki, M.M.Rahman, M.H.Rhahman, K.Yamamoto: "Modeling of arsenic rejection considering affinity and steric hindrance effect in nanofiltration membranes"Wat.Sci.& Technol.. 42, 3-4. 173-180 (2000)

J.I.Oh、T.Urase、H.Kitawaki、M.M.Rahman、M.H.Rhahman、K.Yamamoto：“考虑纳滤膜中的亲和力和空间位阻效应的砷排斥模型”Wat.Sci。

J.I.Oh ら: "Modeling of arsenic rejection considering affinity and steric hindrance effect in nanofiltration membranes"Water Science and Technology. 42,3-4. 173-180 (2000)

J.I.Oh 等人：“考虑纳滤膜中的亲和力和空间位阻效应的砷排斥模型”水科学与技术 42,3-180 (2000)。

J. I. Oh ら: "Application of low-pressure nanofiltration coupled with a bicycle pump for the treatment of arsenic contaminated groundwater"Desalination. 132. 307-314 (2000)

J. I. Oh 等人：“低压纳滤与自行车泵结合用于处理砷污染的地下水”脱盐。 132. 307-314 (2000)

G.Herath, K.Yamamoto, T.Urase: "The effect of suction velocity on concentration polarization in microfiltration membranes under turbulent flow condition"J.of Membrane Science. 169. 175-183 (2000)

G.Herath、K.Yamamoto、T.Urase：“湍流条件下抽吸速度对微滤膜浓差极化的影响”J.of Membrane Science。

G.Herath ら: "The effect of suction velocity on concentration polarization in microfiltration membranes under turbulent flow condition"J.of Membrane Science. 169. 175-183 (2000)

G. Herath 等人：“湍流条件下抽吸速度对微滤膜浓差极化的影响”J. of Membrane Science 169. 175-183 (2000)。