Combined packing is another type of packing improved on the basis of soft packing. It consists of fiber bundles, plastic ring sheets, sleeves, and central ropes. The fiber bundle is supported by the middle plastic ring sheet, which avoids the phenomenon of clustering in the center of the fiber bundle. At the same time, it can play a good role in distributing water and air, with good contact mass transfer conditions and high oxygen utilization. Composite fillers are developed on the basis of soft fillers and semi-soft fillers. The fillers have the advantages of both. Its structure is to change the plastic disc press buckle into a double-circle large plastic ring, press the aldehyde fiber or polyester yarn on the ring of the ring, so that the fiber bundle is evenly distributed; the inner ring is made of snowflake-shaped plastic branches, which can be used for film , It can effectively cut air bubbles and improve the transfer rate and utilization of oxygen. The water and gas biofilm can be fully exchanged, and the organic matter in the water can be treated efficiently. The combined packing is an ideal choice of packing in the case of strong aeration and turbulent water flow.
Performance characteristics of combined packing:
The combined filler has high heat dissipation performance, low resistance, good water and air distribution performance, easy to grow film, and has the effect of cutting air bubbles.
Use of combined packing:
The composite filler is used in sewage and wastewater treatment projects, and is matched with equipment such as contact oxidation towers, oxidation tanks and oxidation tanks. It is a biological carrier for biological contact oxidation and anaerobic fermentation to treat wastewater.
Introduction of elastic filler products:
The elastic filler is selected from polyolefins and polyamides with high-quality varieties of corrosion resistance, temperature resistance and aging resistance, mixed with additives such as hydrophilic, adsorption, and thermal oxygen resistance, and adopts special wire drawing and silk wool making processes , The thread is inserted and fixed on the corrosion-resistant, high-strength central rope. Due to the excellent material selection and technological formula, the elastic filler is rigid and flexible, so that the thread is arranged in a three-dimensional and uniformly radiating state, and a suspension type elastic three-dimensional filler is made. In the effective area, the elastic three-dimensional filler can be evenly spread in all directions, so that air, water, and biofilm can be fully mixed and exchanged. The biofilm can not only be uniformly implanted on each thread, but also be maintained well. The activity and variability of the gap, and the ability to obtain an increasingly larger specific surface area during operation, and good metabolism, this feature and phenomenon is unmatched by other domestic fillers.
Features of elastic packing:
Compared with the rigid inclined tube packing, the three-dimensional elastic packing has large pore variability and no clogging; compared with the soft packing, the material has a long life and does not stick to the group; compared with the semi-soft packing, the surface area is large and the film hangs Fast and low cost. Therefore, the filler can be confirmed to be the fourth-generation high-efficiency and energy-saving novel filler following various hard fillers, soft fillers and semi-soft fillers.
Water treatment elastic filler film is fast, easy to take off, biofilm growth and renewal, high-load impact resistance, high CODcr removal rate, good treatment effect, good oxygenation performance, multi-level collision of bubbles, intensive cutting, and Greatly improve the utilization of oxygen.
Elastic fillers are widely used as biological fillers in biological contact oxidation tanks and hydrolytic acidification tanks.