1, asymmetric fiber filter structure
High efficiency automatic gradient density fiber filter core technology is the use of asymmetric fiber bundle material as the filter material, one end of the loose fiber tow, asymmetric fiber filter run the other end of the fiber tow fixed in the proportion of solid body, filter , The solid nucleus with large specific gravity played a role in compaction of the fiber tow. Meanwhile, the smaller the core size, the less influence on the uniformity of the void fraction distribution of the filtration section, and thus improved the capacity of the filter bed. So that the filter bed with a high filtration porosity, small specific surface area, high filtration rate, large amount of interception, filtration and high precision, when suspended in the water flow through the fiber filter surface, the van der Waals gravity and the role of electricity, suspension Solid and fiber bundle adhesion is far greater than the adhesion with quartz sand, help to improve the filtration rate and filtration accuracy. In this case,
Backwashing, due to the difference between the core and the proportion of filaments, the tail fiber with the backwash water flow and swing and swing, resulting in a strong drag drag force; filter asymmetric fiber filter backwash material between the collision also intensified The fiber in the water by the mechanical force, the irregular shape of the filter material in the backwash water flow and airflow under the action of rotation, strengthening the backwash filter by the mechanical shear force, the force of the The role of the joint action of the fiber attached to the surface of the solid particles can easily fall off, thereby enhancing the cleanliness of the media, so asymmetric fiber filter media at the same time with the particulate filter backwash function. In this case,
2, the upper and lower density of the continuous gradient density filter bed structure Asymmetric fiber bundle filter bed composed of water in the compaction effect, the water flow through the filter layer when the resistance, from top to bottom, the head loss is gradually reduced, Faster and faster, the degree of compaction of the media is more and more high, porosity is getting smaller and smaller, so along the flow direction, the formation of a continuous gradient density filter layer distribution, forming an inverted pyramid structure. The structure is very conducive to the effective separation of suspended solids in water, that is, the upper part of the filter bed desorption particles can easily be in the lower narrow channel filter bed was trapped and retained, to achieve high filtration rate and high precision filtration uniform, improve the filter Interception capacity, to extend the filtration cycle.
