Introduction
Desalination of seawater is now a critical measure against water shortage around the world, and the most efficient and most popular of all the technologies is Reverse Osmosis (RO). VOCEE Membrane Technology Guangzhou is a company that deals in advanced systems of Seawater Reverse Osmosis (SWRO) systems, providing clean and potable water out of the seawater. In this article, the author describes the way RO is applied as the central technology in contemporary desalination.
How Reverse Osmosis Works in Desalination?
Reverse Osmosis refers to membrane process driven under pressure where it separates dissolved salt and other water impurities with seawater. That is how it works:
Pretreatment
First the seawater goes through multimedia filters and ultrafiltration (UF) and is cleansed of suspended solids, algae and large particles.
In order to avoid membrane foulings, antiscalant chemicals are introduced.
High-Pressure Pumping
The natural osmotic pressure is avoided by pressurizing the pretreated seawater (usually 800-1200 psi).
RO Membranous Filtration
Seawater is pushed through the RO membranes that are semi-permeable to water molecules only and it does not allow 99.7 percent of the salts, bacteria and contaminants passing through.
What results is a clean and sanitized water (permeate) and a violent flow of salt (reject).
Energy Recovery and Post Treatment
With the help of pH adjustment, the permeate is demineralized and prepared as drinkable.
Energy recovery devices (ERDs) recycle hydraulic energy up to 98 per cent and thereby reduce power consumption.
The reasons why RO is the best option in seawater desalination?
High Efficiency- Removes 99%+ of the dissolved salts with the energy use decreased relative to thermal desalination.
Small size and modularity- It can be applied to large, coastal plants, as well as, small, modular units.
Robust and Robotized - The modern SWRO plants exhibit an AI system to monitor the plant to work effectively.
Eco-friendly- RO desalination is even green when it is fitted with solar energy or wind energy.
VOCEE advanced SWRO Solutions
Guangzhou VOCEE Membrane Technology provide RO membranes / system with high-performance features and are supplied with:
Greater life time using the anti-fouling coats
Energy power is reduced by using best designs of flows
Smart surveying to react to the real time
Conclusion
In seawater desalination, reverse osmosis has become the gold standard because of its unsurpassed purity, efficiency and scalability. As long as the membrane technology keeps on improving, RO will always be the most sustainable and economic solution to water security in the world.
