SWRO

Despite appearing at relatively low concentrations, weak acids of various types have a significant impact on the design, operation and the quality of the product water in many RO (reverse osmosis) applications. During the RO process, weak acid species are simultaneously involved in interconnected tra

As a means of optimizing desalination processes, site-specificity in the determination of seawater quality conditions is a crucial point for improving the overall energy efficiency of a seawater reverse osmosis (SWRO) process. To this end, field studies were carried out at 16 sampling sites along th

Most large seawater reverse osmosis (SWRO) desalination plants built before 2002 incorporated turbine-type energy recovery devices (ERDs) that were connected with a shaft to the high pressure pump. Both the pump and the ERD had best efficiency points corresponding to specific flow rates and pressure

The main objective of this work was to investigate and compare the removals of boron from model solutions (boron as single solute in distilled and deionized water) and seawater using two commercial high rejection SWRO membranes. The impacts of dissolved solids in seawater and pH on boron rejection a

The main objective of this work was to investigate boron removal from seawater using two commercial high rejection SWRO membranes. The impact of solution pH, feed concentration, pressure, and cross-flow velocity on boron rejection and permeate flux was determined. The membranes used were the TorayTM

The essential point for a successful seawater reverse osmosis (SWRO) plant is pretreatment that provides consistent and high-quality feed to SWRO membranes. Advances in membrane technology and increasing requirements on water quality have stimulated the use of ultrafiltration (UF) for SWRO pretreatm

In the seawater desalination field, the WHO requires that boron concentration in drinking water be below 0.5 mg/l, and this requirement has affected SWRO process design because of the difficulty in achieving such a low boron concentration. In order to overcome this problem, a new SWRO membrane eleme

By defining the combination of high pressure seawater feed pump and energy recovery system as the core hydraulic module of SWRO plants it becomes obvious that this subsystem mainly contributes to the specific water costs by its operational costs and has to be optimized by a complete approach. In the

In this study it is shown that there is a relatively low optimum feed water temperature to a SWRO plant to maximise the lifetime production of a typical B10 permeator. This is based on the calculation methods outlined in the Dupont Permasep Manuals. The results tend to indicate that, in the case of

Taking three examples of plants with brine concentrators, we analyse energy consumption of existing and projected systems. This includes plants using Turbocharger boosting system, Turbocharger boosting with additional Impulse turbine and Impulse turbine acting as boosting and recovery system. Energy