2级分段膜法海水淡化系统设计参数的数模计算

发布时间：2018-03-05 22:24

本文选题：海水淡化　切入点：级分段膜法　出处：《水处理技术》2017年10期 　论文类型：期刊论文

【摘要】：提出了1种膜法海水淡化系统的数模分析方法,利用这种方法计算研究了2级分段膜法海水淡化系统。结果表明,系统比能耗的洼值区为一级一段、一级二段膜回收率的低值区(低于50%)及二级膜回收率的高值区(大于50%);系统回收率随一级一段、一级二段、二级反渗透回收率的增加而增加,但增加的幅度不同,系统回收率随一级二段膜回收率的增加增幅较大,随一级一段膜和二级膜回收率的增加增幅较小;2级分段膜工况参数的优化工况点为系统比能耗等值面与系统回收率等值面的切点。在工程设计实践中,当需要保证较高的系统回收率时(如70%),2级分段膜法较常规的2级不分段膜法系统比能耗更低(如低34.35%)。可为工程设计实践提供借鉴。
[Abstract]:A digital simulation analysis method for membrane desalination system is proposed. The two-stage membrane desalination system is calculated and studied by this method. The results show that the specific energy consumption of the system is a first stage. The low value region (less than 50%) and the high value region (> 50%) of the first stage membrane recovery rate and the second stage membrane recovery rate (> 50%); the system recovery rate increased with the increase of the first stage, the first stage and the second stage reverse osmosis recovery, but the range of increase was different. The system recovery increased with the increase of the first-order two-stage membrane recovery. With the increase of the recovery rate of the first stage membrane and the second stage membrane, the optimum operating condition point of the operating condition parameters of the second stage membrane is the tangent point of the system specific energy consumption isosurface and the system recovery equivalent surface. When it is necessary to ensure a higher system recovery rate (e.g., 70 / 2 segmented membrane method) is lower than that of conventional 2 stage non-segmented membrane system (for example, 34.35% lower energy consumption). It can be used for reference in engineering design practice.
【作者单位】：上海市政工程设计研究总院(集团)有限公司;
【基金】：上海市科委“科技创新行动计划”(16DZ0503500) 上海市政总院“科技创新支持计划”(K2014K023)
【分类号】：P747

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