The filter ball is made of fiber, compared with the traditional steel particle filter material, the elastic effect is good, does not float on the surface, the voidage is large, acid and alkali resistance, etc.In the process of filtration, the filter layer gap along the direction of the water flow gradually smaller, more in line with the ideal filter material from the big gap distribution, high efficiency, fast filtration, sewage interception capacity, renewable, suitable for all kinds of water filtration. This product selects the finalized polyester yarn as the raw material.A large number of biological groups attached to the surface of their own oxygen, sewage repeated contact, so that the wastewater suspended matter and organic matter degradation to achieve the purpose of treatment. Filter ball features: 1. Light weight, high strength, stable physical and chemical properties, durable. 2. The fibrous silk floats with water, making the space between fillers changeable and not easy to be blocked by biofilm. 3. Large specific surface area, strong activity and good treatment effect.