Full-scale simulation of seawater reverse osmosis desalination processes for boron removal: Effect of membrane fouling

Water Research
Pyung-Kyu ParkJae-Hong Kim

Abstract

The objective of this study is to further develop previously reported mechanistic predictive model that simulates boron removal in full-scale seawater reverse osmosis (RO) desalination processes to take into account the effect of membrane fouling. Decrease of boron removal and reduction in water production rate by membrane fouling due to enhanced concentration polarization were simulated as a decrease in solute mass transfer coefficient in boundary layer on membrane surface. Various design and operating options under fouling condition were examined including single- versus double-pass configurations, different number of RO elements per vessel, use of RO membranes with enhanced boron rejection, and pH adjustment. These options were quantitatively compared by normalizing the performance of the system in terms of E(min), the minimum energy costs per product water. Simulation results suggested that most viable options to enhance boron rejection among those tested in this study include: i) minimizing fouling, ii) exchanging the existing SWRO elements to boron-specific ones, and iii) increasing pH in the second pass. The model developed in this study is expected to help design and optimization of the RO processes to achieve the targe...Continue Reading

References

Nov 1, 1994·Environmental Health Perspectives·W G Woods
Jan 14, 2004·Environmental Science & Technology·Eric M V Hoek, Menachem Elimelech
Mar 23, 2011·Environmental Science & Technology·Roy BernsteinViatcheslav Freger

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