How does the under sink water purifier's RO filtration system ensure the efficient removal of impurities and harmful substances in the water?

The RO (Reverse Osmosis) filtration system in an under sink water purifier ensures efficient removal of impurities and harmful substances from water through a multi-stage process. Here's how it works: Firstly, the incoming water undergoes a pretreatment stage. This typically involves filtration, sedimentation, and activated carbon adsorption. The aim is to remove suspended particles, organic matter, and other impurities that could potentially clog or contaminate the RO membrane. This pretreatment step is crucial for maintaining the performance and lifespan of the RO membrane. Next, the pretreated water is pressurized to a certain level, enabling it to pass through the RO membrane. The RO membrane is a semi-permeable barrier that allows only water molecules to pass through while rejecting larger molecules, ions, and impurities. This process effectively separates the purified water from the contaminants. As the pressurized water passes through the RO membrane, most of the dissolved solids, heavy metals, bacteria, and other harmful substances are rejected and concentrated in the reject stream, known as the concentrate. The concentrate is then disposed of separately, ensuring it does not contaminate the purified water. The water that passes through the RO membrane is significantly purified and free from most impurities. However, to ensure the highest level of purity and taste, further post-treatment steps may be employed. These can include additional filtration, disinfection, and even re-mineralization to restore essential minerals that may have been removed during the RO process. The efficiency of the RO filtration system depends on several factors, including the quality of the RO membrane, the pretreatment process, and the maintenance of the system. Regular maintenance is crucial for maintaining the system's performance. Overall, the RO filtration system in an under sink water purifier efficiently removes impurities and harmful substances from water, providing safe and clean drinking water for households. By combining pretreatment, RO membrane filtration, and post-treatment steps, it ensures a high level of purification and taste quality.