Three different scale commercialized spiral wound (SW) type forward osmosis (FO) elements were evaluated. Each element has a unique optimum operating condition, because operating conditions depend on the dimension, performance and element design factor. These factors determine the operating conditions and plant capacity of the SWRO process. This study evaluates the effect of the size in SWFO element via performance evaluation and economic analysis. Moreover, investigation of engineering factors for possible commercialization of SWFO-RO hybrid system was also carried out. Investigation of engineering effect and process economic impact is essential stage for system implication and technology step up. For each element size, maximum FS recovery, DS dilution rates and water flux were highly dependent on the varying design factors. The maximum FS recovery rate were 37.2 and 62.6%; the DS dilution rates were 62.6% for 2540 and 8040 SW, respectively. The water flux for 2540 and 8040 SW elements were 27.6 and 21.1 LMH, respectively Nevertheless, 8040 is 24% more economically than 2540 because of the 8040 can satisfy the minimum requirement of capital cost factors. Nevertheless, 8040 is 24% more economical than 2540 because 8040 can satisfy the minimum requirement of the capital cost factors.

评估了三种不同规模的商业化螺旋伤口（SW）型正向渗透（FO）元件。每个元件都有一个独特的最佳运行条件，因为运行条件取决于尺寸，性能和元件设计因素。这些因素决定了SWRO工艺的操作条件和工厂产能。本研究通过性能评估和经济分析来评估SWFO元素中尺寸的影响。此外，还对可能用于SWFO-RO混合系统商业化的工程因素进行了研究。工程效果和过程经济影响的调查是系统含义和技术进步的重要阶段。对于每种元素尺寸，最大的FS回收率，DS稀释率和水通量在很大程度上取决于变化的设计因素。最高FS恢复率为37.2和62.6％；2540和8040 SW的DS稀释率分别为62.6％。2540和8040 SW元件的水通量分别为27.6和21.1 LMH，尽管如此，由于8040可以满足资本成本因素的最低要求，因此8040的经济效益比2540高24％。不过，由于8040可以满足资本成本因素的最低要求，因此8040比2540节约24％。