The method of cleaning water filter cartridges depends on their types (such as PP cotton filter, activated carbon filter, RO reverse osmosis membrane filter, etc.), as different types of filter cartridges vary in material and filtration principle, requiring different cleaning methods. However, most water filter cartridges for household water purifiers do not support direct cleaning and reuse, as they are designed for one-time use or periodic replacement. Here are the general handling methods and recommendations for several common filter cartridges:
PP Cotton Filter: The PP cotton filter is primarily used for initial filtration of large particles in water, such as sand, rust, etc. This filter generally adopts an external pressure design, retaining impurities outside the filter through the pressure difference of water flow. Due to its material and structural characteristics, the PP cotton filter is usually not washable and is recommended to be replaced regularly according to the instructions in the user manual.
Activated Carbon Filter: The activated carbon filter removes residual chlorine, odors, and organic matter from water through adsorption. The adsorption capacity of activated carbon is limited, and once saturated, its purification efficiency significantly decreases. Therefore, the activated carbon filter generally does not support reuse after cleaning but requires periodic replacement.
Hollow Fiber Ultrafiltration Membrane Filter: This filter can remove bacteria, viruses, and most organic matter from water, but its pore size is still relatively large, unable to filter out dissolved inorganic salts and other substances. Direct cleaning of the hollow fiber ultrafiltration membrane filter is generally not recommended, as its filtration layer can easily be damaged, affecting filtration efficiency. Similarly, it should be replaced regularly as per the manufacturer's instructions.
RO Reverse Osmosis Membrane Filter: The RO reverse osmosis membrane filter is one of the highest precision filters in water purification technology, capable of removing most impurities in water, including heavy metals, bacteria, viruses, etc. However, the RO membrane gradually clogs during use, leading to reduced water output. While some manufacturers offer RO membrane cleaning services, it is generally recommended for household users to replace the RO membrane filter directly to ensure water purification effectiveness.
Special Cases of Washable Filters:
For some reusable filters (albeit less common in household water purifiers), such as certain composite filters or specific types of pre-filter cartridges, physical cleaning (e.g., rinsing the surface with clean water) or chemical cleaning (using specific cleaning agents) may be supported. However, before proceeding with cleaning, it is crucial to read the product manual thoroughly or consult the manufacturer to avoid damaging the filter or compromising water purification performance.
In summary:
As most water filter cartridges for household water purifiers are designed for one-time use or periodic replacement, they do not support direct cleaning and reuse. To ensure the water purification effectiveness of your water purifier and safeguard your family's health, it is recommended to replace the filter cartridges regularly according to the instructions in the user manual. For special cleaning needs, always consult the manufacturer or a professional.