Hybrid System of Adsorption and Membrane Separation

吸附与膜分离混合系统

• 批准号: 13555149
• 负责人: YUASA Akira
• 金额: $ 2.3万
• 依托单位: Gifu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13555149/
• 关键词: membrane filtration; adsorption; powderd activated carbon; ultrafiltration; drinking water treatment; natural organic matter (NOM); micropollutant; agrochemical; 活性炭微粒化; 精密ろ過; 溶解性有機炭素; 紫外部吸光度; 膜分離; 浄水; 農薬; シマジン

This study describes several application potentials with a recently developed model for predicting the synthetic organic chemical (SOC) removal by powdered activated carbon (SAC) adsorption during ultrafiltration (UF) and discusses the removal mechanism. The model was successfully applied, without any modification, to dead-end mode operation as well as to cross-flow mode operation, validating the assumption of the internal diffusion control mechanism and the continuously-stirred-tank-reactor (CSTR) concept. Even when OF was operated in a cross-flow mode, PAC added was re-circulating in suspension for only a short time. Then, solute uptake took place mostly by PAC immobilized in membrane tubes not only for dead-end operation but also for cross-flow operation. Therefore, cross-flow operation did not have any advantage regarding the SOC mass transfer on PAC in OF loop over dead-end operation. The model simulation implied that pulse PAC addition at the beginning of filtration cycle resulted better SOC removal than continuous PAC addition. However, for the pulse PAC addition mode, the model predicted somewhat lower effluent SOC concentration than the observed values, and the benefit of pulse PAC application in terms of reducing SOC over its continuous dosage was not confirmed. Longer retention tune of PAC dosed in a pulse than continuously dosed PAC could possibly further decrease internal diffusivity

本研究描述了几个应用潜力与最近开发的模型预测合成有机化学品（SOC）去除粉末活性炭（SAC）吸附超滤（UF）过程中，并讨论了去除机制。该模型被成功地应用，没有任何修改，死端模式操作以及错流模式操作，验证假设的内部扩散控制机制和连续搅拌釜式反应器（CSTR）的概念。即使当OF以错流模式操作时，添加的PAC仅在短时间内以悬浮液再循环。然后，溶质吸收主要发生在固定在膜管PAC不仅死端操作，但也为错流操作。因此，交叉流操作在OF回路中PAC上的SOC传质方面与死端操作相比没有任何优势。模型模拟表明，在过滤周期开始时脉冲投加PAC比连续投加PAC对SOC的去除效果更好。然而，对于脉冲PAC添加模式，该模型预测略低于流出物SOC浓度比观察值，脉冲PAC应用在减少SOC超过其连续剂量方面的好处没有得到证实。脉冲投加比连续投加PAC的滞留时间更长，可能会进一步降低内扩散系数

项目成果

湯浅晶: "浄水処理における膜濾過技術の現状と今後の方向"資源環境対策. Vol.39, No.13. 74-78 (2003)

Akira Yuasa：“膜过滤技术在水净化处理中的现状和未来方向”《资源与环境措施》第39卷，第13期（2003年）。

Akira Yuasa, Fusheng Li, Yoshihiko Matsui: "Adsorption Isotherm of Nonionic Surfactants onto Activated Carbon -Alkylphenol Polyethoxylates and Alchol Polyethoxylates-"Fundamentals of Adsorption. Vol.7. 193-200 (2002)

Akira Yuasa、Fusheng Li、Yoshihiko Matsui：“非离子表面活性剂在活性炭上的吸附等温线 - 烷基酚聚乙氧基化物和醇聚乙氧基化物 -”吸附基础。

Fusheng Li, Akira Yuasa, et al.: "Factors affecting the Adsorption Capacity of Dissolved Organic Matter onto Activated Carbon Modified Isotherm Analysis"Water Research. Vol.36. 4592-4604 (2002)

李福生，Akira Yuasa，等：“影响溶解有机物在活性炭上吸附能力的因素改进等温线分析”水研究。

Fusheng Li, Akira Yuasa, et al.: "Factors affecting the Adsorption Capacity of Dissolved Organic Mattes onto Activated Carbon : Modified Isotherm Analysis."Water Research. Vol.36. 4592-4604 (2002)

Fusheng Li、Akira Yuasa 等人：“影响溶解有机物质在活性炭上吸附能力的因素：改进的等温线分析。”水研究。

湯浅晶, 松井佳彦: "活性炭吸着と膜ろ過による浄水処理"ケミカルエンジニヤリング. Vol.40, No.8. 39-44 (2002)

Akira Yuasa、Yoshihiko Matsui：“活性炭吸附和膜过滤的水净化处理”化学工程，第 40 卷，第 39-44 期（2002 年）。