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超滤过程中浸没式中空纤维膜组件的数学模拟优化研究

作者：罗南¹，樊耀波，王捷²，耿全月

单位： 1.中国科学院生态环境研究中心，水污染控制室，北京 100085；2.天津工业大学环境与化学工程学院，天津 300399

关键词：中空纤维膜组件，响应曲面法，数学模型，膜污染，优化

DOI号：

分类号： TQ028.8

出版年,卷(期):页码： 2014,34(2):32-39

摘要：

本文基于中空纤维膜轴向不均污染理论，运用响应曲面法建立了浸没式中空纤维超滤膜组件不同通量状态下，膜组件过滤过程中的膜阻力关于时间、空间的动态数学模型，对建立的模型进行了显著性分析及实验验证，并对中空纤维膜组件进行了数学优化。通过验证实验发现，发现实测数据与膜阻力动态数学模型计算值基本一致。通过对数学模型分析发现：在次临界通量状态下，膜丝长度及运行时间均存在最佳值；在临界和超临界状态下，膜阻力及运行时间与膜丝长度成正比。

Based on the theory of membrane foulingasymmetric distributionalong axial hollow fiber membrane,the dynamic models of membrane resistance related to time and space under variation flux condition in ultrafiltration of hollow fiber membrane were established by Response Surface Methodology (RSM). Theremarkableanalysis and experiment have been carried out to verify this model.The optimization of the hollow fiber membrane module was performed using the model. The verification suggests thatmodel calculated value agrees with experimental valuewell.Analysis of this model showedthat in the subcritical flux condition, there was an optimum value of membrane fiber length and operation time.In the critical and supercritical state,membrane resistance is proportional to the fiber length and operational time.

基金项目：

水体污染控制与治理科技重大专项“PVDF膜组件及成套装备产业化”（2011ZX07321- 001），国家自然科学基金“MBR 流场、传质与能耗的相互关系研究”（51278483)，中国科学院院地合作项目:“新型低能耗膜生物反应器污水资源化技术工程应用”（ZNGZ2011023)

作者简介：

罗南（1987-），女，湖南衡阳人，博士生，从事膜分离技术的研究. *通讯联系人E-mail: ybfan@rcees.ac.cn

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