Fiber ball filter is a new type of water quality precision treatment equipment in pressure filter. Previously in oily sewage reinjection treatment has been used in the double filter material filter, walnut shell filter, sand filter, etc. Especially in low permeability reservoir fine filtration technology can not meet the requirement of water injection in low permeability reservoir. The fiber ball filter can meet the standard of oily sewage reinjection. It is made of a special fiber silk synthesized from a new chemical formula. The main feature is the essence of the improvement, from the fiber filter material of the oil - wet type to the water - wet type. The high efficiency fiber ball filter body filter layer uses about 1.2m polyester fiber ball, raw water from top to bottom into the outflow. Polyester fiber ball filter material has the characteristics of low density, good flexibility, compressibility and large voidage. When filtering under pressure, the fiber ball crosses each other, forming a dense filter layer distribution state. Fiber ball with his unique characteristics: great surface area and porosity adsorption at the same time intercepting suspended particles in the water, give full play to the filter material deep pollution interception capacity; Fiber ball has the characteristics of not easy to dip oil, so backwash is easier, and then reduce the water rate; It also has the advantages of abrasion resistance and strong chemical stability. When the filter material is seriously polluted by organic matter, it can also be recycled by chemical cleaning method, which is practical.1. High filtration accuracy: the removal rate of suspended matter in water can be close to 100%, and it has obvious removal effect on bacteria, viruses, macromolecular organic matter, colloid, iron and other impurities. 2. Fast filtering speed: generally 30-45m/h, up to 80m/h. Equivalent to other particle filter material (anthracite, quartz sand, magnetite, etc.) 2-3 times. In order to achieve the same accuracy requirements, modified fiber ball filter with one level, double filter material filter, sand filter, etc. need to use more than two levels; To achieve the same capacity requirements, the tank diameter of the modified fiber ball filter is much smaller, and the sewage treatment index is improved by one grade. 3. Large pollution interception capacity: generally 5-15kg/m, is more than 2 times of the traditional quartz sand filter. 4. Comprehensive high cost performance: under the condition of the same treatment capacity and the same inflow index, the modified fiber ball filter can reach more than 50% (performance-price ratio) by reducing only the equipment investment compared with other filters, and the sewage treatment index is improved by one level. 5. Small area: make the same water, the area is less than 1/3 of the quartz sand filter. 6. Low cost of tons of water: backwashing water is only about 2% of the water produced, especially it can use the water before the filter for backwashing, so the cost of a ton of water is only about 1/3 of the traditional filter. 7. Low water consumption: only 1 ~ 3% of the periodic water, available raw water backwash. 8. No need to replace the filter element: After the filter element is contaminated, it can be easily cleaned to restore the filtering performance. 9 easy backwash: backwash, fiber filter material fully loose, under the action of bubbles and hydraulic, backwash regeneration is very thorough. 10. High mechanical strength, long service life, simple operation, convenient maintenance, reliable operation: the service life of polymer polypropylene fiber filter material in more than ten years. It is higher than the strength of quartz sand, the usual filtration and backwash strength, will not occur damage and run.1. Widely used in circulating water side flow filtration, domestic water depth treatment, boiler feed water treatment, reverse osmosis pre-filtration, sewage reuse filtration. 2. It is suitable for crude, medium and fine filtration of oil-bearing sewage reinjection in oil fields and for efflux treatment of sewage in oil fields and oil refineries. 3. Applicable to steel, thermal power, shipbuilding, papermaking, medicine, chemical, textile, food, beverage, tap water, swimming pool and other industrial recycling water and domestic water and wastewater recycling and filtration treatment. 4. Suitable for water treatment of purified water, seawater, brackish water desalination, centralized water supply project, urban sewage treatment project, etc.