Reverse osmosis

At a time of intensive demand for producing fresh water at a reasonable cost, addressing automation, process control and cost optimization of desalination plants have become increasingly evident. Large-scale direct seawater reverse osmosis (RO) plants must perform at high standards due to the increa

As in many regions it is no longer possible to satisfy the growing demands for water by conventional methods an increased production of potable water from saline waters is called for. One option with growing importance is the desalination of seawater with reverse osmosis using decentralised desalina

Utilizing power plants in seawater desalination is one of the recent trends to cover the gap between the increasing water demand and the shortage in water resources in the new millenium. The fast development in the reverse osmosis (RO) desalination technique and membrane manufacturing technology ren

It is imperative to review the history of the past to provide a vision for the future. It is therefore the objective of this paper to review the history of the development of membranes and membrane processes for water production in general and seawater desalination in particular. The review highligh

A h igh concentration of arsenic compounds w as observed in tube well water of Bangladesh. T wo species of arsenic compounds were arsenite a nd arsenate. The average ratio of arsenite to t otal arsenic was approximately 25%. R ejection characteristics of arsenic comp ounds as different species of ar

T he improvement in the flux as a result of o perating the plant in a cyclic model was s uccessfully predicted by the simple model. The m odifications applied to the model lead to p ermeation rates which were in close agreement w ith the experimental data for the considered f orcing functions, namel

The project presented addresses the strategic topic of providing drinking and irrigation water through seawater desalination via a very energy-efficient and cost-competitive submarine technology. In conventional surface based industrial desalination plants applying the reverse osmosis (RO) technolog

A study was carried out on a NaCl H2O RO thin film composite reverse osmosis membrane system to characterize these membranes, determine their performance and predict the effects of pressure and solute concentration in the feed using the correlation from the Kimura Sourirajan analysis. The effect of

Energy recovery systems based on turbines activated by concentrate leaving the plant have been in operation in many reverse osmosis (RO) plants for many years. Other design approaches for RO plants save energy by reducing the energy demand for the desalination process itself. One of them is the pres

Among the desalination technologies available, reverse osmosis is currently considered as the most economical process. However, while RO membranes have been continuously improved over the years, they have had one major shortcoming; the susceptibility to fouling. Indeed, it appears that RO technology