Investigation of hydrodynamic parameters in two-pass seawater reverse osmosis systems using computer simulations

Abstract

Abstract One common method of purifying water is using RO systems. In this article, the effects of using different designs of the two-pass SWRO system on the required feedwater pressure and the amount of NDP and TDS of the output product were investigated. The findings show that in two-pass SWRO systems which use a single-stage hybrid pass, the required feedwater pressure and the amount of NDP and TDS of the output product are lower than in the simple two-pass and hybrid two-pass designs. The findings also showed that designs with a hybrid system in both passes consume less energy than other designs. The presented designs and findings can be used to optimize two-pass RO systems.