کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4988696 | 1455959 | 2017 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A systematic optimization of Internally Staged Design (ISD) for a full-scale reverse osmosis process
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: A systematic optimization of Internally Staged Design (ISD) for a full-scale reverse osmosis process A systematic optimization of Internally Staged Design (ISD) for a full-scale reverse osmosis process](/preview/png/4988696.png)
چکیده انگلیسی
In this study, Internally Staged Design (ISD) was numerically optimized in order to demonstrate the long-term performance of full-scale seawater reverse osmosis (SWRO) membrane systems in the presence of colloidal foulants. To this end, a numerical model based on a finite difference method was developed and optimized with various feed water qualities, such as fouling potential and total dissolved solids (TDS). As a result, the optimized ISD exhibited greater water flux and higher energy efficiency in long-term operation (90 days) compared to conventional designs, where single-type membrane elements were employed over a pressure vessel while achieving potable TDS concentration in permeate (< 400Â mg/L). This enhanced performance was attributed to the reduction of colloidal fouling on the lead elements and the alleviation of concentration polarization (CP) at the tail elements. Among fouling mechanisms, cake-enhanced concentration polarization (CECP) played a dominant role in flux decline at the lead elements, whereas CP was the chief flux decline mechanism at the tail elements. In addition, it was found that the employment of a low-permeability membrane at the lead element was important to maintain acceptable TDS in the permeate at either high TDS or high fouling potential of feed water.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 540, 15 October 2017, Pages 285-296
Journal: Journal of Membrane Science - Volume 540, 15 October 2017, Pages 285-296
نویسندگان
Kwanho Jeong, Minkyu Park, Seo Jin Ki, Joon Ha Kim,