Economical filter element, suitable for water treatment, light load meltblow filter element is composed of four kinds of polypropylene material with different fiber fineness, the inner fiber is finer, the outer fiber is thicker, in order to achieve the effect of layered filtration of impurities in the liquid, can effectively increase the filter element pollution capacity, prolong the service life of the filter element, reduce the cost of consumable replacement, product filtration efficiency is high, acid and alkali resistance, It can more effectively remove impurities such as suspended matter, particles and rust in the liquid. Light load meltjet filter element is an economical filter element, which is effective for water treatment in various industrial environments. It can be widely used in different water treatment applications such as traditional electroplating bath bath filtration, industrial pure water pre-filtration, low viscosity chemical liquid clarification filtration, recycled water filtration and so on.