The world is experiencing water-related issues. And these water issues are expected to pose an extreme global threat especially with climate change that causes unprecedented environmental impacts getting worse nowadays. While some other parts of the world experience torrential flooding, other places suffer from drought. The sea level is also rising and falling beyond the normal levels. On top of all these issues is the continuously rising population which will not only cause an increase in water demands but will also make water pollution worse.
Because of the worsening water-related issues that the world is experiencing these days, more and more people are getting interested in investing in an RO water plant. If you are one of those planning to start a RO water plant, it would help if you start by knowing what is an RO water system and how it works first. In this article, we are going to discuss what is an RO water system and RO plant process.
How can an RO water plant help solve consumable water-related issues?
The growing issues of drought, flooding, and water pollution have adversely affected the supply of clean drinking water. Millions of people are currently suffering from drinking water scarcity. This has urged the government and even private entities to look for ways to produce clean drinking water that is enough for the growing population’s consumption. One of the effective solutions to ease this scarcity is to make use of floodwater, feed water, and seawater to produce drinking water.
But how can this be possible? You may ask. Sure, seawater is just too salty for drinking or even for growing plants or meal preparation. Also, feedwater, floodwater, and seawater are just not great for drinking as they are quite polluted and they contain all sorts of dirt, pollutants, harmful particles, chemicals, and microorganisms which are all detrimental to our health and safety. How can you be able to take the salt and all these particles out of water? Well, this is where an RO water system comes in handy.
What is an RO?
An RO or reverse osmosis is a process of purifying and removing contaminants from feed water or unfiltered water with the use of a semipermeable membrane. It makes use of applied pressure to force the water through the partially permeable membrane and to eliminate the unwanted molecules, ions, and larger particles. The applied pressure is strong enough to overcome osmotic pressure.
Reverse osmosis is one of the most effective ways to remove salt from seawater. This process of salt removal is called desalination. Not only that, but an RO water system is also useful in recycling wastewater. The process of reverse osmosis is not only used to convert seawater, feed water, floodwater, or wastewater into safe drinking water, but it can also be used to produce energy.
How does reverse osmosis plant work?
The RO plant process typically consists of three to five stages of filtration depending on the number of prefilters and post-filters used. Mostly, an RO water plant system used the semipermeable RO membrane as the focal point. Some RO water plants use other filtrations as well. The partially permeable RO membrane is capable of eliminating up to 98% of the TDS or total dissolved solids.
Apart from the RO membrane, the RO Plant installation also includes installing a carbon filter and a sediment filter. The sediment filter is used to remove or at least reduce the number of particles like rust, dirt, and dust from the water while the carbon filter is used to remove or reduce the amount of chlorine, VOCs or volatile organic compounds, and other contaminants that can affect the odour and taste of the water.
With the RO system, the chlorine and sediment are taken out from the water first via prefiltering to avoid these particles to damage or clog the RO membrane. Prefiltration may use both or either a sediment filter or a carbon filter. After the water exits from the prefilter, it flows through the partially permeable membrane where the dissolved solids are removed. It then passes through the postfilter for polishing. The polished water is now made ready and safe for drinking. After passing through a postfilter, the drinking water will then flow towards the dedicated faucet. In some RO water plants, the water flows to the storage tank first after postfiltration. The water will then be held at the storage tank. Before the water is directed towards the dedicated faucet, it goes through another postfilter for further polishing.