Filter element and soft packing

Brief introduction of filter element and soft packing Filter element and soft packing This kind of packing is mainly represented by soft fiber packing. It is the 1980s; my country's self-developed filler. The filter element and soft fiber filler are biological carriers for the treatment of wastewater by biological contact oxidation and anaerobic fermentation. Its basic structure is to tie soft fiber bundles on a central rope, and it needs to be fixed on the auxiliary support during installation. Specific surface area (2470m2/m3), and has the characteristics of light weight, stable physical and chemical properties, easy film hanging, low cost, low freight, convenient assembly, etc., thus overcoming some disadvantages of honeycomb fillers to a certain extent. Soft fillers generally appear fiber bundles agglomerate after 1 year of use. With the passage of time, the phenomenon of agglomeration will become more and more serious, resulting in problems such as rapid aging, easy knotting, and uneven film hanging. Recent studies on soft fillers have shown that soft fiber fillers are in a floating state in water, and the collision and cutting of gas-water mixed fluids is very weak, which is not enough to cut large bubbles into small bubbles, which affects the transfer rate of oxygen. Commonly used filters Filter element: wire wound filter element, pleated filter element, PP melt-blown filter element, etc. Na Liping and other studies have shown that the soft fiber filler has a better removal effect of organic matter and ammonia nitrogen in artificially cultivated simulated domestic sewage. When the HRT reaches 12h, the average effluent is only The average removal rate of COD is 56mg/L, the average removal rate of COD is 84.4%, the average value of ammonia nitrogen in the effluent is 14.6mg/L, and the average removal rate of ammonia nitrogen is 53%. .
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