Experimental and simulation studies of two types of 5-inch scale hollow fiber membrane modules for pressure-retarded osmosis
Experimental and simulation studies of two types of 5-inch scale hollow fiber membrane modules for pressure-retarded osmosis
复制标题
两种5英寸级中空纤维膜组件阻压渗透的实验与模拟研究
DOI：
10.1016/j.desal.2018.09.015
复制
发表时间：
2018
期刊：
影响因子：
9.9
通讯作者：
Mitsuru Higa and Hideto Matsuyama
中科院分区：
文献类型：
--
作者：
Yasuhiro Tanaka;Masahiro Yasukawa;Shohei Goda;Hidehiko Sakurai;Masafumi Shibuya;Tomoki Takahashi;Michimasa Kishimoto;Mitsuru Higa and Hideto Matsuyama
本文对两种大型中空纤维正渗透膜组件的压力延迟渗透性能进行了实验和理论分析。研究了操作条件对具有交叉缠绕HF配置的5英寸规模HF组件性能的影响。在摩擦浓差极化（FCP）模型的基础上，将PRO理论与水通量和盐渗漏相结合，提出了PRO性能评价的修正模型。在所有条件下，理论计算结果与实验结果的偏差均在9.7%以内。还从理论上推导了HF PRO模块的能量效率。5英寸膜组件的发电量估算显示，10%至15%的能量可以从反渗透海水淡化过程中回收。然而，由于非最佳尺寸，膜的某些部分不能在模块内有效地使用。因此，提出了具有更短长度和更大模块直径的新型模块，与原始模块相比，由于水未充分渗透的区域和HF膜内的压降两者的减少，提供了更大的净能量输出。
This study experimentally and theoretically analyzed the performance of two types of large-scale hollow fiber (HF) forward osmosis (FO) modules for pressure retarded osmosis (PRO). The effects of operating conditions on the module performance of the 5-inch scale HF modules with a cross-wound HF configuration were investigated. A modified analytical model, based on the friction-concentration polarization (FCP) model, which combined the PRO theory with water flux and salt leakage, was proposed for PRO performance estimation. The theoretical results agreed within 9.7% deviation with the experimental results under all conditions. The energy efficiency of the HF PRO module was also theoretically derived. The power generation estimation for the 5-inch membrane module revealed that 10 to 15% of the energy could be recovered from the reverse osmosis seawater desalination process. However, some parts of the membrane could not be used efficiently inside the modules because of the non-optimal dimensions. Therefore, new types of modules, having shorter lengths and larger module diameters, were proposed and provided greater net energy output, as compared with the original module, due to the reduction of both the region where the water was not sufficiently permeated and the pressure drop inside the HF membrane.
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