DOI: 10.1016/j.watres.2018.01.060
Scopus记录号: 2-s2.0-85044302582
论文题名: Inorganic fouling mitigation by salinity cycling in batch reverse osmosis
作者: Warsinger D.M. ; Tow E.W. ; Maswadeh L.A. ; Connors G.B. ; Swaminathan J. ; Lienhard V J.H.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 137 起始页码: 384
结束页码: 394
语种: 英语
英文关键词: Batch reverse osmosis
; High salinity
; Induction time
; Inorganic fouling
; Nucleation
; Reverse osmosis
Scopus关键词: Batch data processing
; Calcite
; Calcium carbonate
; Continuous time systems
; Desalination
; Energy efficiency
; Forecasting
; Fouling
; Groundwater
; Nucleation
; Recovery
; Reverse osmosis
; Silica
; Water treatment
; Brackish ground water
; Energy efficiency improvements
; High salinity
; Induction time
; Inorganic fouling
; Reverse osmosis desalination
; Reverse osmosis systems
; Sparingly soluble salt
; Sulfur compounds
; brackish water
; calcium carbonate
; calcium sulfate
; ground water
; inorganic salt
; sea water
; silicon dioxide
; brine
; water
; brine
; chemical compound
; desalination
; energy efficiency
; groundwater
; methodology
; performance assessment
; reverse osmosis
; salinity
; seawater
; water treatment
; Article
; batch process
; crystallization
; fouling control
; prediction
; priority journal
; reverse osmosis
; salinity
; water supply
; artificial membrane
; biofouling
; chemistry
; devices
; osmosis
; procedures
; salinity
; theoretical model
; water management
; Biofouling
; Calcium Carbonate
; Calcium Sulfate
; Groundwater
; Membranes, Artificial
; Models, Theoretical
; Osmosis
; Salinity
; Salts
; Seawater
; Silicon Dioxide
; Water
; Water Purification
英文摘要: Enhanced fouling resistance has been observed in recent variants of reverse osmosis (RO) desalination which use time-varying batch or semi-batch processes, such as closed-circuit RO (CCRO) and pulse flow RO (PFRO). However, the mechanisms of batch processes’ fouling resistance are not well-understood, and models have not been developed for prediction of their fouling performance. Here, a framework for predicting reverse osmosis fouling is developed by comparing the fluid residence time in batch and continuous (conventional) reverse osmosis systems to the nucleation induction times for crystallization of sparingly soluble salts. This study considers the inorganic foulants calcium sulfate (gypsum), calcium carbonate (calcite), and silica, and the work predicts maximum recovery ratios for the treatment of typical water sources using batch reverse osmosis (BRO) and continuous reverse osmosis. The prediction method is validated through comparisons to the measured time delay for CaSO4 membrane scaling in a bench-scale, recirculating reverse osmosis unit. The maximum recovery ratio for each salt solution (CaCO3, CaSO4) is individually predicted as a function of inlet salinity, as shown in contour plots. Next, the maximum recovery ratios of batch and conventional RO are compared across several water sources, including seawater, brackish groundwater, and RO brine. Batch RO's shorter residence times, associated with cycling from low to high salinity during each batch, enable significantly higher recovery ratios and higher salinity than in continuous RO for all cases examined. Finally, representative brackish RO brine samples were analyzed to determine the maximum possible recovery with batch RO. Overall, the induction time modeling methodology provided here can be used to allow batch RO to operate at high salinity and high recovery, while controlling scaling. The results show that, in addition to its known energy efficiency improvement, batch RO has superior inorganic fouling resistance relative to conventional RO. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112826
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Rohsenow Kendall Heat Transfer Laboratory, Department of Mechanical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139-4307, United States; Department of Management Science and Engineering, Stanford University, 450 Serra Mall, Stanford, CA 98305, United States
Recommended Citation:
Warsinger D.M.,Tow E.W.,Maswadeh L.A.,et al. Inorganic fouling mitigation by salinity cycling in batch reverse osmosis[J]. Water Research,2018-01-01,137