In industrial water treatment and fluid filtration systems, the PP melt-blown filter cartridge is the core consumable for pre-filtration and precision filtration. Many enterprises' purchasing and equipment operation personnel often encounter such problems: if the filter element's accuracy is set too high, it will cause rapid clogging, high pressure difference, and a sharp increase in replacement costs; if the accuracy is set too low, it will fail to intercept fine impurities, resulting in blockage of downstream membrane elements, equipment nozzles, and affecting production water quality and equipment lifespan. The mainstream filtration accuracy of the polypropylene melt blown filter cartridge covers 0.1μm–100μm. Different accuracies correspond to completely different usage conditions, and precise selection can balance the filtration effect and usage cost.
1. High precision range: 0.1μm–1μm (precise purification conditions)
This range belongs to the category of ultra-precision filtration. It mainly intercepts fine colloids, microorganisms, ultra-fine dust and other tiny impurities, with extremely high filtration accuracy. It is suitable for high-standard water purification and high-purity fluid filtration scenarios. It is mainly applicable to pharmaceutical purified water, medical device cleaning water, electronic ultra-pure water pre-treatment, and precision instrument cooling liquid filtration, etc. It can also be used for cosmetics, high-end food and beverage raw material filtration, effectively removing fine suspended substances in the raw materials, ensuring product purity and quality. It should be noted that high-precision pp melt blown filter cartridge have a smaller pollutant capacity and are only suitable for water environments with relatively good basic water quality, mostly used as terminal precision filtration, and not suitable for primary filtration of impure raw water.
2. Medium precision range: 5μm–20μm (general industrial mainstream conditions)
5-20μm is the most widely used gold precision range in industrial applications, balancing filtration accuracy and pollutant capacity, and adapting to the vast majority of conventional filtration scenarios. Among them, the spun depth filter cartridge of 5μm and 10μm are mostly used for the pre-filtration of RO reverse osmosis equipment, are the standard filter elements for pure water equipment, and can effectively intercept water sediment, rust, suspended particles, etc., protecting the reverse osmosis membrane from being clogged, and significantly extending the service life of membrane elements. The 20μm accuracy is suitable for domestic drinking water filtration, swimming pool water circulation, central air conditioning cooling water, and mild industrial circulating water filtration, which can purify water quality and is not prone to frequent clogging, with extremely low operation costs for conventional pp spun filter cartridge.
3. Low precision range: 30μm–100μm (primary pre-treatment for large impurities conditions)
30-100μm is a coarse filtration accuracy, with the core function of intercepting large particles of impurities. It has a large flow rate and strong pollutant capacity, and is mainly used in the first pre-treatment process of various filtration systems. It is widely applicable to the primary filtration of chemical wastewater, electroplating raw material pre-treatment, farmland irrigation water filtration, construction site circulating water filtration, etc., with high impurity content and complex water quality. It can quickly filter out large particle pollutants such as stones, sand, rust debris, etc. from the water, reducing the working pressure of downstream precision filter elements and filtration equipment, significantly improving the stability of the entire filtration system of melt-blown filter cartridge.
4. Summary of precise selection and product advantages
In simple terms, for clean water with high purity and strict requirements, select 0.1-1μm; for general industrial water purification and pure water equipment, select 5-20μm; for water with turbid quality and many impurities, select 30-100μm. Our factory's polypropylene melt blown filter cartridge adopts a gradient melt-blown process, with advantages such as no fiber shedding, low pressure difference, high pollutant capacity, and resistance to acid and alkali. It has complete precision specifications and supports 10/20/30/40-inch conventional sizes and non-standard customization, suitable for various industrial filtration equipment equipped with pp melt blown filter cartridge and spun depth filter cartridge.
If you are unsure about the filter element accuracy suitable for your equipment, you can consult us at any time. By providing the working condition parameters, we can provide a free exclusive selection scheme. We also support sample sending and bulk spot supply of pp spun filter cartridge and all series of melt-blown filtration products.