Bead foam filter for water treatment, also known as foam particles, filter foam balls, etc., mainly used in water purification, sewage solid-liquid separation filtration equipment filter, filter. A strong electrostatic adsorption capacity, can absorb a lot of tiny particles and sticky, difficult to filter press substances, and easily separated from the filter, the filter can be regenerated repeatedly. If its coverage in the upper part of the water purifier, when the turbidity 500mg / L of raw water through the foam filter particulate filter layer, the water turbidity can be reduced to 5mg / L, up to the national drinking water standards. When the sewage ss than 1g / l, after the foam filter particulate filter layer, the effluent ss can be reduced to 5-30mg / L. The filter in the water purification equipment, water purification in the coagulation, clarification and filtration processes in a container finish. As simplification process, equipment is simple and reliable, and can directly supply towers and users. Has been used for small and medium sized domestic water purification equipment, mainly used for solid-liquid separation in hydrometallurgy, sulfuric acid, and sulfuric acid refining of filtration, separation of small particles, easy solution crystallization separation of the SS, electrolyte purification, before extraction purification, water purification, etc., can also be used for wastewater degreasing, like a river ship water purification and degreasing. Materials of high mechanical strength, hardness, density between about 50kg/m3-300kg/m3. This product has a heavy weight, large surface area, uniform filter, adsorption capacity, decontamination capability, hardness, long life, etc., can also be produced according to customers samples of products to customer needs.