1. High filtration rate. The filtration speed of fiber ball can reach 40m/h, while the filtration speed of sand filter is only 8-10 m/h.
2. The water quality is good. When the filtration rate is 20-40 m/h, the domestic fiber balls can reduce the suspended solids in the sedimentation tank from <20mg/l to 1.4-3mg/l, and the removal rate is about 85%. mg/l or so. The domestic fiber ball is filtered and contacted with the effluent of the oxidation tank, and the suspended solids are reduced from 20 to 80 mg/l to ≤ 5 mg/l.
3. Large amount of interception. Filtration of the effluent from the sedimentation tank, the interception capacity of the fiber ball filter layer is 3-4.7kg/m2, which is 1.6-2.4 times that of the quartz sand filter layer; the interception capacity of the effluent from the contact oxidation tank is 4.5-9.4 kg/m2.
4. The cycle water production is large. When filtering the effluent from the sedimentation tank, the filtration cycle water output of the fiber ball filter material is 360-700m3/m2, which is 3.6-7 times that of the sand filter.
5. The amount of backwash water is small, accounting for about 2% of the filtered water, while the sand filter backwash water accounts for about 5% of the filtered water.
The fiber ball filter material is made of polyester yarn. Acid resistance refers to low-level hydrochloric acid, not all acids. Alkali resistance refers to sodium hydroxide, but it cannot be immersed in an alkaline solution for a long time, which may affect the service life of the fiber ball. . The fiber ball filter material is made of fiber material. The premise of filtration must remove large particles or entangled substances such as aquatic plants in the water body to ensure the service life of the fiber ball.