The filtration system of a countertop water dispenser is usually composed of multi-stage filter elements. Generally speaking, the most common one includes a pre-filter element, such as a PP cotton filter element. The PP cotton filter element mainly plays the role of preliminary filtration. It can effectively intercept larger particle impurities such as rust, silt, and suspended matter in the water. Its structure is loose and porous, and it can remove these obvious pollutants at the beginning of the water flowing into the water dispenser, laying the foundation for subsequent fine filtration.
The activated carbon filter element is also an important part of the filtration system. Activated carbon has a strong adsorption capacity and can adsorb residual chlorine, discoloration, odor and some organic matter in the water. Through physical adsorption, it can improve the taste of water and make the water more sweet. At the same time, the activated carbon filter element can further remove some tiny impurities and improve the purity of the water.
For some higher-end countertop water dispensers, they may also be equipped with ultrafiltration membrane filters or RO reverse osmosis membrane filters. The ultrafiltration membrane filter element has a high filtration accuracy and can filter out tiny particles such as bacteria and viruses, but it cannot remove dissolved minerals in the water. The RO reverse osmosis membrane filter element can remove almost all harmful substances in the water, including heavy metal ions, bacteria, viruses, etc., and only allow water molecules to pass through, thus providing extremely pure drinking water. However, the RO reverse osmosis membrane filter element will produce a certain proportion of wastewater during the filtration process.
In addition, the filtration system of the Countertop Water Dispenser may also include some auxiliary components, such as a pressure pump (if there is an RO reverse osmosis membrane filter element), a water flow control device, etc. These components work together to ensure that the filtration system can operate stably and efficiently. At the same time, in order to ensure the filtration effect, the user needs to replace the filter element regularly according to the instructions to prevent the filter element from being saturated or blocked, which will affect the filtration performance and water quality of the water dispenser.
