Forward osmosis system design and optimization using a commercial cellulose triacetate hollow fibre membrane module for energy efficient desalination
Forward osmosis system design and optimization using a commercial cellulose triacetate hollow fibre membrane module for energy efficient desalination
复制标题
使用商用三醋酸纤维素中空纤维膜组件进行正向渗透系统设计和优化，实现节能海水淡化
DOI：
10.1016/j.desal.2021.115075
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发表时间：
2021
期刊：
影响因子：
9.9
通讯作者：
H. Shon
中科院分区：
文献类型：
--
作者：
S. M. Ali;S. Im;A. Jang;S. Phuntsho;H. Shon
这项研究旨在开发系统数学设计模型，以模拟和优化用于节能海水淡化的中空纤维膜组件的全尺寸正向渗透(FO)。使用商用外选择性CTA中空纤维FO膜组件的实验数据进行了验证。模拟结果与实验结果相差不到10%，验证了模型的可靠性。为降低下游加压海水淡化工艺的能耗，对1000kMm~3/d FO装置进行了模拟和设计，分别以0.6M氯化钠为引水溶液(DS)(海水)和0.02M氯化钠进料液(FS)(膜生物反应器出水)，生产0.25、0.2和0.15M氯化钠稀释海水。发现单元件平行组件布置更适合于这种商品化的中空纤维膜元件。最后，数值模拟表明，要达到0.25、0.20和0.15µM的最终DS浓度，考虑膜成本和能耗的最佳组件数分别为370、435和555。使用商业CTA中空纤维组件的FO系统被发现比商业TFC螺旋缠绕膜组件更节能。
This study is aimed at developing system mathematical design models to simulate and optimize a full scale forward osmosis (FO) for a hollow fibre membrane module for energy efficient desalination. Experimental data from a commercial outer selective CTA hollow fibre FO membrane module was used for validation. Less than 10% difference between the simulation and experimental results were observed which validated the reliability of the models. Simulation and design were performed for a 1000 m3/day FO plant using 0.6 M NaCl as draw solution (DS) (~seawater) and 0.02 M NaCl feed solution (FS) (~MBR effluent) to produce 0.25, 0.2 and 0.15 M NaCl diluted seawater to reduce the energy consumption of downstream pressure driven desalination process. A single element parallel module arrangement was found more suitable for this commercial hollow fibre membrane element. Finally, the numerical simulations revealed that to achieve 0.25, 0.20 and 0.15 M final DS concentrations, the optimum number of modules required were 370, 435 and 555 respectively considering membrane cost and energy consumption. The FO system using the commercial CTA hollow fibre module was found more energy efficient than a commercial TFC spiral wound membrane module.