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首页> 外文期刊>Desalination: The International Journal on the Science and Technology of Desalting and Water Purification >Performance analysis of reverse osmosis, membrane distillation, and pressure-retarded osmosis hybrid processes
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Performance analysis of reverse osmosis, membrane distillation, and pressure-retarded osmosis hybrid processes

机译：反渗透，膜蒸馏和压力延迟渗透混合工艺的性能分析

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摘要

A performance analysis of a tri-combined process that consists of reverse osmosis (RO), membrane distillation (MD), and pressure-retarded osmosis (PRO) was conducted by using numerical approaches in order to evaluate its feasibility. In the hybrid process, the RO brine is partially used as the MD feed solution, and the concentrated MD brine is then mixed with the rest of the RO brine to be considered as the PRO draw solution. Here, the brine division ratio, incoming flow rate of RO, dimensions of the MD and PRO processes, and the supply cost of the MD heat source were considered as influential parameters. Previously validated process models were employed and the specific energy consumption (SEC) was calculated to examine the performance of the RO-MD-PRO hybrid process. The simulation results confirmed that the RO-MD-PRO hybrid process could outperform stand-alone RO in terms of reducing the SEC and the environmental footprint by dilution of the RO brine in locations where free or low-cost thermal energy can be exploited. Despite the need for further investigations and pilot tests to determine its commercial practicability, this study provides insights into future directions for water and energy nexus processes for energy efficient desalination. (C) 2015 Elsevier B.V. All rights reserved.
机译：为了评估其可行性，通过数值方法对由反渗透（RO），膜蒸馏（MD）和耐压渗透（PRO）组成的三结合工艺进行了性能分析。在混合工艺中，RO盐水部分用作MD进料溶液，然后将浓缩的MD盐水与其余RO盐水混合，视为PRO汲取溶液。在此，将盐水分配比，RO的进料流量，MD和PRO过程的尺寸以及MD热源的供应成本视为影响参数。采用了先前验证的过程模型，并计算了比能耗（SEC）以检查RO-MD-PRO混合过程的性能。仿真结果证实，RO-MD-PRO混合工艺可在可利用自由热能或低成本热能的地方通过稀释反渗透盐水来降低SEC和环境足迹，从而胜过独立反渗透。尽管需要进行进一步的研究和试验以确定其商业可行性，但本研究提供了有关水和能源联系过程的未来方向的见解，以实现高效淡化。 （C）2015 Elsevier B.V.保留所有权利。

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