Guide to Reverse Osmosis Water System

Reverse osmosis is a method of removing impurities from unfiltered water when water flows through a semi-permeable membrane. The water that is contaminated will have a higher concentration. This concentrated water will flow through a semi-permeable membrane. On the other side of the membrane will be water with a lower concentration as the impurities will be left behind on the higher concentration side. This higher concentration of water with the impurities will be left as waste.

Before this filtration occurs, the commercial reverse osmosis equipment will use a filter (pre-filter) beforehand to remove deposits and chlorine from the water. After this, the water is forced through the semi permeable membrane which will remove the impurities and sediments that are dissolved in the water. This membrane is called the RO membrane. After this process, the water flows through another filter (post-filter) for further cleaning before it enters the faucet. Some reverse osmosis systems will have different numbers of pre-filters and post-filters. The main operation of a reverse osmosis system is focused on the RO membrane. You can find 3 to 5 numbers of filtration stages in these systems. The pre-filters and post-filters will be carbon and sediment filters that further remove particles from the water.

The sediment filter is used to remove most of the particles in the water. This can be dirt or dust. The carbon filter will lower the quantity of volatile organic compounds in the water. For example, if there is chlorine in the water, it will remove most of this so that it doesn’t affect the taste or smell of the water. About 98% of total dissolved solids (TDS) will be removed by the RO membrane. A sediment and a carbon filter will be used in pre-filtration before water is forced through the RO membrane. This ensures that the sediment doesn’t build-up in the membrane and cause a blockage or damage. Once the water goes through the RO membrane, dissolved particles are removed from the water. The filtered water is then held in a storage tank. This filtration process will run until the tank is full. When you turn the drinking water faucet on, the water in the storage tank goes through another filter before it comes from the faucet.

The storage tank ensures that you get water quickly as there is some time taken for the RO membrane to work. Some of the dissolved solids in the water removed by the RO membrane are fluoride, salts, arsenic, herbicides, pesticides etc. However, it doesn’t remove bacteria or viruses. For this, you will need to have your water go through a UV disinfection system. Most RO units will have a UV filter as well in addition to the sediment and carbon filter. Reverse osmosis is a comprehensive method of filtering water to provide safe and healthy drinking water. It is more eco-friendly than using bottled water as you will not be using so much plastic. You can simply fill your reusable bottle with filtered water. These systems can be fitted under the sink or over the counter mounted on the wall.

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